{"id":632,"date":"2026-08-14T05:53:24","date_gmt":"2026-08-14T05:53:24","guid":{"rendered":"https:\/\/injectionstretchblowmolding.com\/?p=632"},"modified":"2026-08-14T05:53:24","modified_gmt":"2026-08-14T05:53:24","slug":"how-to-calculate-isbm-machine-output-cycle-time-cavity-count-and-the-formulas-you-need","status":"publish","type":"post","link":"https:\/\/injectionstretchblowmolding.com\/ur\/application\/how-to-calculate-isbm-machine-output-cycle-time-cavity-count-and-the-formulas-you-need\/","title":{"rendered":"How to Calculate ISBM Machine Output: Cycle Time, Cavity Count and the Formulas You Need"},"content":{"rendered":"<div class=\"article-wrap\" style=\"max-width: 860px; margin: 0 auto; padding: 0 20px 80px;\">\n<p style=\"font-size: 1.08rem; color: #444; line-height: 1.8; margin: 32px 0 36px; padding-bottom: 28px; border-bottom: 1px solid #eef1f5;\">Output is the number that justifies every ISBM machine investment. Yet it is also one of the most misquoted specifications in the industry \u2014 because manufacturers publish theoretical maximum figures based on the fastest possible cycle time, the fewest cavities and the lightest possible bottle. Real-world output is almost always lower, and understanding why requires a clear engineering framework. This guide breaks down the ISBM output calculation into its component parts: what drives cycle time, how cavity count multiplies production rate, how to apply the formulas to your specific bottle, and where the gaps between datasheet and shop floor typically appear.<\/p>\n<p><!-- TOC --><\/p>\n<nav class=\"article-toc\" style=\"background: #f8faff; border: 1px solid #dbeafe; border-left: 4px solid #0056b3; border-radius: 0 8px 8px 0; padding: 24px 28px; margin: 36px 0;\">\n<p class=\"toc-label\" style=\"font-size: 0.82rem; font-weight: bold; text-transform: uppercase; letter-spacing: 0.8px; color: #0056b3; margin-bottom: 14px;\">Contents<\/p>\n<ol style=\"padding-left: 18px; display: flex; flex-direction: column; gap: 6px;\">\n<li style=\"font-size: 0.9rem; color: #444; line-height: 1.4;\"><a style=\"color: #0056b3; text-decoration: none;\" href=\"#why-output-matters\">Why Output Calculation Matters Before You Buy<\/a><\/li>\n<li style=\"font-size: 0.9rem; color: #444; line-height: 1.4;\"><a style=\"color: #0056b3; text-decoration: none;\" href=\"#cycle-time\">Cycle Time: The Four Stages and What Controls Each<\/a><\/li>\n<li style=\"font-size: 0.9rem; color: #444; line-height: 1.4;\"><a style=\"color: #0056b3; text-decoration: none;\" href=\"#formula\">The Output Formula: Bottles Per Hour<\/a><\/li>\n<li style=\"font-size: 0.9rem; color: #444; line-height: 1.4;\"><a style=\"color: #0056b3; text-decoration: none;\" href=\"#cavity-count\">Cavity Count: Multiplying Output Without Changing Cycle Time<\/a><\/li>\n<li style=\"font-size: 0.9rem; color: #444; line-height: 1.4;\"><a style=\"color: #0056b3; text-decoration: none;\" href=\"#machine-data\">Real Machine Data: HGY50 to HGYS280 Output Comparison<\/a><\/li>\n<li style=\"font-size: 0.9rem; color: #444; line-height: 1.4;\"><a style=\"color: #0056b3; text-decoration: none;\" href=\"#efficiency\">OEE and Line Efficiency: From Theoretical to Actual Output<\/a><\/li>\n<li style=\"font-size: 0.9rem; color: #444; line-height: 1.4;\"><a style=\"color: #0056b3; text-decoration: none;\" href=\"#air-supply\">Auxiliary Constraints: How Air Supply Limits Peak Output<\/a><\/li>\n<li style=\"font-size: 0.9rem; color: #444; line-height: 1.4;\"><a style=\"color: #0056b3; text-decoration: none;\" href=\"#worked-example\">Worked Example: Sizing a Machine for 5 Million Bottles per Year<\/a><\/li>\n<\/ol>\n<\/nav>\n<p><!-- \u2550\u2550\u2550 Section 1 \u2550\u2550\u2550 --><\/p>\n<h2 id=\"why-output-matters\" style=\"font-size: clamp(1.2rem,3vw,1.6rem); font-weight: 800; color: #1a1a1a; margin: 52px 0 16px; line-height: 1.25; padding-top: 8px;\">1. Why Output Calculation Matters Before You Buy<\/h2>\n<p style=\"font-size: 1rem; color: #444; line-height: 1.8; margin-bottom: 18px;\">The single most common mistake in ISBM machine procurement is accepting the manufacturer&#8217;s published theoretical output as a planning figure. A machine rated at &#8220;4,000 bottles per hour&#8221; on the specification sheet may deliver 2,400 to 2,800 bottles per hour under real production conditions, depending on bottle geometry, resin type, cavity count and operator efficiency. The difference between these figures \u2014 30 to 40% \u2014 represents the gap between a profitable line and one that fails to meet its production targets.<\/p>\n<p style=\"font-size: 1rem; color: #444; line-height: 1.8; margin-bottom: 18px;\">Understanding how to calculate output from first principles allows you to:<\/p>\n<ul style=\"list-style: none; padding: 0; margin: 16px 0 22px; display: flex; flex-direction: column; gap: 8px;\">\n<li style=\"font-size: 0.93rem; color: #444; display: flex; align-items: flex-start; gap: 9px; line-height: 1.55;\"><span style=\"color: #2e7d32; font-weight: bold; font-size: 0.9rem; flex-shrink: 0; margin-top: 2px;\">\u2713<\/span>Verify whether a given machine size can meet your annual volume target before purchase<\/li>\n<li style=\"font-size: 0.93rem; color: #444; display: flex; align-items: flex-start; gap: 9px; line-height: 1.55;\"><span style=\"color: #2e7d32; font-weight: bold; font-size: 0.9rem; flex-shrink: 0; margin-top: 2px;\">\u2713<\/span>Select the right cavity count for your bottle size and weight combination<\/li>\n<li style=\"font-size: 0.93rem; color: #444; display: flex; align-items: flex-start; gap: 9px; line-height: 1.55;\"><span style=\"color: #2e7d32; font-weight: bold; font-size: 0.9rem; flex-shrink: 0; margin-top: 2px;\">\u2713<\/span>Identify which part of the cycle is the bottleneck \u2014 and whether it can be reduced<\/li>\n<li style=\"font-size: 0.93rem; color: #444; display: flex; align-items: flex-start; gap: 9px; line-height: 1.55;\"><span style=\"color: #2e7d32; font-weight: bold; font-size: 0.9rem; flex-shrink: 0; margin-top: 2px;\">\u2713<\/span>Set realistic shift targets and OEE benchmarks for your production planning team<\/li>\n<li style=\"font-size: 0.93rem; color: #444; display: flex; align-items: flex-start; gap: 9px; line-height: 1.55;\"><span style=\"color: #2e7d32; font-weight: bold; font-size: 0.9rem; flex-shrink: 0; margin-top: 2px;\">\u2713<\/span>Size auxiliary equipment \u2014 particularly air compressors and chillers \u2014 correctly for the actual peak demand<\/li>\n<\/ul>\n<div style=\"background: #e8f4ff; border-left: 5px solid #0056b3; border-radius: 0 8px 8px 0; padding: 18px 22px; margin: 28px 0;\">\n<p style=\"margin: 0; font-size: 0.95rem; color: #003d82; line-height: 1.7;\"><strong style=\"color: #002868;\">The core principle:<\/strong> ISBM output is determined by two independent variables \u2014 cycle time and cavity count. Improving either one increases output proportionally. Understanding them separately is the key to systematic output optimisation.<\/p>\n<\/div>\n<p><!-- \u2550\u2550\u2550 Section 2 \u2550\u2550\u2550 --><\/p>\n<h2 id=\"cycle-time\" style=\"font-size: clamp(1.2rem,3vw,1.6rem); font-weight: 800; color: #1a1a1a; margin: 52px 0 16px; line-height: 1.25; padding-top: 8px;\">2. Cycle Time: The Four Stages and What Controls Each<\/h2>\n<p style=\"font-size: 1rem; color: #444; line-height: 1.8; margin-bottom: 18px;\">In a one-step ISBM machine, the cycle time is the elapsed time between one ejection event and the next \u2014 the time it takes to complete one full rotation of the turntable. Because the four stations operate simultaneously (injection, conditioning, stretch blow, ejection are all happening in parallel), the cycle time is not the sum of all four stage times. It is determined by the slowest station \u2014 whichever station takes longest controls the overall throughput.<\/p>\n<h3 style=\"font-size: clamp(1rem,2.5vw,1.2rem); font-weight: bold; color: #0056b3; margin: 32px 0 10px; line-height: 1.3;\">2.1 Station 1 \u2014 Injection Time<\/h3>\n<p style=\"font-size: 1rem; color: #444; line-height: 1.8; margin-bottom: 18px;\">Injection time comprises four sub-phases: fill time (melt flowing into the cavity), pack\/hold time (compensating shrinkage), gate freeze time (solidification of the gate vestige) and decompression time (screw suck-back). For standard cosmetic and pharmaceutical preforms of 5\u201330g, typical injection time ranges from <strong style=\"color: #1a1a1a;\">3.5 to 7.0 seconds<\/strong>. Heavier preforms (50\u2013130g) for wide-mouth or thick-walled bottles extend this to 8\u201314 seconds.<\/p>\n<p style=\"font-size: 1rem; color: #444; line-height: 1.8; margin-bottom: 18px;\">Injection time is controlled by: preform weight (more material = longer fill), resin viscosity (higher molecular weight resins are slower), injection pressure and speed settings, and the number of barrel heating zones. It is the most difficult station time to reduce without compromising preform quality.<\/p>\n<h3 style=\"font-size: clamp(1rem,2.5vw,1.2rem); font-weight: bold; color: #0056b3; margin: 32px 0 10px; line-height: 1.3;\">2.2 Station 2 \u2014 Conditioning Time (4-Station Machines)<\/h3>\n<p style=\"font-size: 1rem; color: #444; line-height: 1.8; margin-bottom: 18px;\">On a 4-station machine, the conditioning station holds the preform while its internal temperature equalises after injection. For standard thin-walled preforms, conditioning time is typically <strong style=\"color: #1a1a1a;\">1.5 to 3.0 seconds<\/strong> \u2014 short enough that it is rarely the bottleneck. For thick-walled preforms (wall &gt; 4mm), conditioning can extend to 5\u20138 seconds and may become the limiting station. On 3-station machines, there is no separate conditioning station \u2014 the preform moves directly from injection to blow, which restricts the range of bottle geometries the machine can handle effectively.<\/p>\n<h3 style=\"font-size: clamp(1rem,2.5vw,1.2rem); font-weight: bold; color: #0056b3; margin: 32px 0 10px; line-height: 1.3;\">2.3 Station 3 \u2014 Stretch Blow Time<\/h3>\n<p style=\"font-size: 1rem; color: #444; line-height: 1.8; margin-bottom: 18px;\">Stretch blow time includes: mould close time, stretch rod extension, low-pressure pre-blow, high-pressure main blow, pressure hold (cooling under pressure), pressure exhaust and mould open. For standard bottles, this runs from <strong style=\"color: #1a1a1a;\">2.5 to 5.0 seconds<\/strong>. The dominant variable is cooling time \u2014 the time the bottle must remain under blow pressure while it cools below its ejection temperature. This is controlled by mould temperature (cooled by chilled water), wall thickness and resin thermal properties.<\/p>\n<h3 style=\"font-size: clamp(1rem,2.5vw,1.2rem); font-weight: bold; color: #0056b3; margin: 32px 0 10px; line-height: 1.3;\">2.4 Station 4 \u2014 Ejection and Turntable Index Time<\/h3>\n<p style=\"font-size: 1rem; color: #444; line-height: 1.8; margin-bottom: 18px;\">Ejection time is typically the shortest station \u2014 the finished bottle is mechanically stripped from the core rod, conveyed away, and the turntable indexes to the next position. On servo-driven machines (EV series), indexing is faster and more precise than on hydraulic machines. Ejection typically takes <strong style=\"color: #1a1a1a;\">1.0 to 2.0 seconds<\/strong> and is rarely the bottleneck unless the take-out mechanism is misadjusted or the conveyor is backed up.<\/p>\n<div style=\"background: #f0f7ff; border: 1px solid #cde0f5; border-radius: 10px; padding: 22px 26px; margin: 28px 0;\"><span style=\"font-size: 0.72rem; font-weight: bold; text-transform: uppercase; letter-spacing: 0.8px; color: #0056b3; margin-bottom: 8px; display: block;\">Key insight \u2014 the limiting station<\/span><\/p>\n<p style=\"margin: 0; font-size: 0.93rem; color: #333; line-height: 1.7;\">Because all four stations run in parallel, reducing a non-limiting station&#8217;s time has zero effect on output. If injection takes 6s and blow takes 4s, reducing blow to 3s gains nothing. The only productive optimisation target is the current limiting station \u2014 almost always injection for preforms above 20g, and blow cooling for very thin-walled bottles below 10g.<\/p>\n<\/div>\n<p><!-- Image 1 --><\/p>\n<div style=\"margin: 36px 0;\"><img decoding=\"async\" style=\"width: 100%; border-radius: 10px; box-shadow: 0 8px 28px rgba(0,0,0,0.08);\" src=\"https:\/\/injectionstretchblowmolding.com\/wp-content\/uploads\/2026\/02\/Process-flow-diagram.webp\" alt=\"One-step ISBM 4-station parallel process flow \u2014 injection, conditioning, stretch blow, ejection running simultaneously\" \/><\/p>\n<p style=\"text-align: center; font-size: 0.78rem; color: #999; margin-top: 10px; font-style: italic; line-height: 1.5;\">Fig. 1 \u2014 In the 4-station ISBM cycle, all four stations operate in parallel. Cycle time equals the duration of the slowest station \u2014 not the sum of all four. This parallel architecture is the fundamental reason one-step ISBM achieves higher output efficiency than sequential processes.<\/p>\n<\/div>\n<p><!-- \u2550\u2550\u2550 Section 3 \u2550\u2550\u2550 --><\/p>\n<h2 id=\"formula\" style=\"font-size: clamp(1.2rem,3vw,1.6rem); font-weight: 800; color: #1a1a1a; margin: 52px 0 16px; line-height: 1.25; padding-top: 8px;\">3. The Output Formula: Bottles Per Hour<\/h2>\n<p style=\"font-size: 1rem; color: #444; line-height: 1.8; margin-bottom: 18px;\">The fundamental ISBM output formula is straightforward:<\/p>\n<p><!-- Formula display --><\/p>\n<div style=\"background: #1a2a3a; border-radius: 10px; padding: 28px 32px; margin: 24px 0; text-align: center;\">\n<p style=\"color: rgba(255,255,255,0.6); font-size: 0.78rem; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 14px;\">Core Output Formula<\/p>\n<p style=\"color: #4caf82; font-size: 1.5rem; font-weight: 800; font-family: monospace; margin-bottom: 10px; line-height: 1.4;\">BPH = (3,600 \/ CT) \u00d7 N<\/p>\n<p style=\"color: rgba(255,255,255,0.65); font-size: 0.85rem; line-height: 1.6; margin: 0;\">BPH = Bottles Per Hour \u00a0\u00a0|\u00a0\u00a0 CT = Cycle Time in seconds \u00a0\u00a0|\u00a0\u00a0 N = Number of cavities<\/p>\n<\/div>\n<p style=\"font-size: 1rem; color: #444; line-height: 1.8; margin-bottom: 18px;\">This gives theoretical maximum output under continuous, uninterrupted production. To arrive at practical output, apply an efficiency factor (discussed in Section 6):<\/p>\n<div style=\"background: #1a2a3a; border-radius: 10px; padding: 28px 32px; margin: 24px 0; text-align: center;\">\n<p style=\"color: rgba(255,255,255,0.6); font-size: 0.78rem; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 14px;\">Practical Output Formula<\/p>\n<p style=\"color: #4caf82; font-size: 1.5rem; font-weight: 800; font-family: monospace; margin-bottom: 10px; line-height: 1.4;\">Actual BPH = BPH \u00d7 OEE<\/p>\n<p style=\"color: rgba(255,255,255,0.65); font-size: 0.85rem; line-height: 1.6; margin: 0;\">OEE = Overall Equipment Effectiveness (typically 0.75 \u2013 0.88 for ISBM lines)<\/p>\n<\/div>\n<h3 style=\"font-size: clamp(1rem,2.5vw,1.2rem); font-weight: bold; color: #0056b3; margin: 32px 0 10px; line-height: 1.3;\">3.1 Formula Applied \u2014 Three Examples<\/h3>\n<div style=\"overflow-x: auto; -webkit-overflow-scrolling: touch; border-radius: 10px; box-shadow: 0 4px 16px rgba(0,0,0,0.06); margin: 28px 0;\">\n<table style=\"width: 100%; border-collapse: collapse; font-size: 0.88rem; min-width: 520px;\" role=\"table\">\n<thead>\n<tr style=\"background: #0056b3; color: #fff;\">\n<th style=\"padding: 12px 16px; text-align: left; font-weight: bold; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.4px;\">Scenario<\/th>\n<th style=\"padding: 12px 16px; text-align: left; font-weight: bold; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.4px;\">Cycle Time<\/th>\n<th style=\"padding: 12px 16px; text-align: left; font-weight: bold; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.4px;\">Cavities<\/th>\n<th style=\"padding: 12px 16px; text-align: left; font-weight: bold; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.4px;\">Theoretical BPH<\/th>\n<th style=\"padding: 12px 16px; text-align: left; font-weight: bold; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.4px;\">Practical BPH (OEE 0.82)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr style=\"background: #f8faff;\">\n<td style=\"padding: 11px 16px; border-bottom: 1px solid #eef1f5; font-weight: 600; color: #1a1a1a;\">30ml cosmetic serum (PETG, 6g)<\/td>\n<td style=\"padding: 11px 16px; border-bottom: 1px solid #eef1f5; color: #444;\">5.0 s<\/td>\n<td style=\"padding: 11px 16px; border-bottom: 1px solid #eef1f5; color: #444;\">6<\/td>\n<td style=\"padding: 11px 16px; border-bottom: 1px solid #eef1f5; color: #444;\">4,320<\/td>\n<td style=\"padding: 11px 16px; border-bottom: 1px solid #eef1f5; color: #0056b3; font-weight: bold;\">3,542<\/td>\n<\/tr>\n<tr style=\"background: #fff;\">\n<td style=\"padding: 11px 16px; border-bottom: 1px solid #eef1f5; font-weight: 600; color: #1a1a1a;\">100ml pharmaceutical syrup (PP, 18g)<\/td>\n<td style=\"padding: 11px 16px; border-bottom: 1px solid #eef1f5; color: #444;\">8.5 s<\/td>\n<td style=\"padding: 11px 16px; border-bottom: 1px solid #eef1f5; color: #444;\">4<\/td>\n<td style=\"padding: 11px 16px; border-bottom: 1px solid #eef1f5; color: #444;\">1,694<\/td>\n<td style=\"padding: 11px 16px; border-bottom: 1px solid #eef1f5; color: #0056b3; font-weight: bold;\">1,389<\/td>\n<\/tr>\n<tr style=\"background: #f8faff;\">\n<td style=\"padding: 11px 16px; border-bottom: none; font-weight: 600; color: #1a1a1a;\">500ml premium water bottle (PET, 22g)<\/td>\n<td style=\"padding: 11px 16px; border-bottom: none; color: #444;\">7.2 s<\/td>\n<td style=\"padding: 11px 16px; border-bottom: none; color: #444;\">2<\/td>\n<td style=\"padding: 11px 16px; border-bottom: none; color: #444;\">1,000<\/td>\n<td style=\"padding: 11px 16px; border-bottom: none; color: #0056b3; font-weight: bold;\">820<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h3 style=\"font-size: clamp(1rem,2.5vw,1.2rem); font-weight: bold; color: #0056b3; margin: 32px 0 10px; line-height: 1.3;\">3.2 Annual Volume Formula<\/h3>\n<p style=\"font-size: 1rem; color: #444; line-height: 1.8; margin-bottom: 18px;\">To convert hourly output to annual production capacity, apply the planned operating schedule:<\/p>\n<div style=\"background: #1a2a3a; border-radius: 10px; padding: 28px 32px; margin: 24px 0; text-align: center;\">\n<p style=\"color: rgba(255,255,255,0.6); font-size: 0.78rem; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 14px;\">Annual Volume Formula<\/p>\n<p style=\"color: #4caf82; font-size: 1.3rem; font-weight: 800; font-family: monospace; margin-bottom: 10px; line-height: 1.5;\">Annual = Actual BPH \u00d7 Hours\/Day \u00d7 Days\/Year<\/p>\n<p style=\"color: rgba(255,255,255,0.65); font-size: 0.85rem; line-height: 1.6; margin: 0;\">Example: 3,542 BPH \u00d7 20 h\/day \u00d7 300 days = <strong style=\"color: #fff;\">21.25 million bottles\/year<\/strong><\/p>\n<\/div>\n<p><!-- \u2550\u2550\u2550 Section 4 \u2550\u2550\u2550 --><\/p>\n<h2 id=\"cavity-count\" style=\"font-size: clamp(1.2rem,3vw,1.6rem); font-weight: 800; color: #1a1a1a; margin: 52px 0 16px; line-height: 1.25; padding-top: 8px;\">4. Cavity Count: Multiplying Output Without Changing Cycle Time<\/h2>\n<p style=\"font-size: 1rem; color: #444; line-height: 1.8; margin-bottom: 18px;\">Adding a cavity doubles that cavity&#8217;s share of output without adding any time to the cycle. A 2-cavity mould running at 7s produces 1,028 bottles per hour; a 4-cavity mould on the same machine at the same cycle time produces 2,057 BPH \u2014 exactly double. This makes cavity count the most powerful lever for increasing output on an existing machine, and cavity selection the most important tooling decision in the ISBM investment.<\/p>\n<h3 style=\"font-size: clamp(1rem,2.5vw,1.2rem); font-weight: bold; color: #0056b3; margin: 32px 0 10px; line-height: 1.3;\">4.1 What Limits Maximum Cavity Count<\/h3>\n<p style=\"font-size: 1rem; color: #444; line-height: 1.8; margin-bottom: 18px;\">Four constraints set the practical upper limit on cavity count for any given machine and bottle combination:<\/p>\n<ul style=\"list-style: none; padding: 0; margin: 22px 0; display: flex; flex-direction: column; gap: 14px;\">\n<li style=\"display: flex; gap: 14px; align-items: flex-start; background: #f8f9fa; border-radius: 8px; padding: 14px 16px;\">\n<div style=\"background: #0056b3; color: #fff; font-size: 0.75rem; font-weight: bold; width: 26px; height: 26px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\">1<\/div>\n<div><strong style=\"display: block; color: #1a1a1a; font-size: 0.95rem; margin-bottom: 3px;\">Injection clamping force vs total projected area<\/strong><span style=\"font-size: 0.85rem; color: #666; line-height: 1.55;\">Each additional cavity adds projected area at the parting plane. The total injection clamping force must exceed total cavity pressure multiplied by total projected area. Exceed this limit and the mould opens under injection pressure, producing flash at every cycle. For the HGY150-V4 at 150KN injection clamping, this typically limits cavities to 4\u20138 for standard neck diameters.<\/span><\/div>\n<\/li>\n<li style=\"display: flex; gap: 14px; align-items: flex-start; background: #f8f9fa; border-radius: 8px; padding: 14px 16px;\">\n<div style=\"background: #0056b3; color: #fff; font-size: 0.75rem; font-weight: bold; width: 26px; height: 26px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\">2<\/div>\n<div><strong style=\"display: block; color: #1a1a1a; font-size: 0.95rem; margin-bottom: 3px;\">Total preform weight vs injection capacity<\/strong><span style=\"font-size: 0.85rem; color: #666; line-height: 1.55;\">All cavities are filled from a single shot. N cavities times preform weight must not exceed the machine&#8217;s theoretical injection volume. At 90% shot utilisation (the practical limit to avoid over-packing), a HGY150-V4 with 310g theoretical capacity supports a maximum of 10 cavities at 28g per preform, or 6 cavities at 45g.<\/span><\/div>\n<\/li>\n<li style=\"display: flex; gap: 14px; align-items: flex-start; background: #f8f9fa; border-radius: 8px; padding: 14px 16px;\">\n<div style=\"background: #0056b3; color: #fff; font-size: 0.75rem; font-weight: bold; width: 26px; height: 26px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\">3<\/div>\n<div><strong style=\"display: block; color: #1a1a1a; font-size: 0.95rem; margin-bottom: 3px;\">Blow clamping force vs total bottle projected area<\/strong><span style=\"font-size: 0.85rem; color: #666; line-height: 1.55;\">The blow mould must clamp against the 2.0\u20133.5 MPa blow pressure acting on the total plan area of all bottles in the mould. More cavities means more projected area and greater opening force. The HGY150-V4 blow clamping of 200KN (single side) typically supports up to 8 cavities for a 40mm diameter bottle body.<\/span><\/div>\n<\/li>\n<li style=\"display: flex; gap: 14px; align-items: flex-start; background: #f8f9fa; border-radius: 8px; padding: 14px 16px;\">\n<div style=\"background: #0056b3; color: #fff; font-size: 0.75rem; font-weight: bold; width: 26px; height: 26px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\">4<\/div>\n<div><strong style=\"display: block; color: #1a1a1a; font-size: 0.95rem; margin-bottom: 3px;\">Mould platen size vs total mould footprint<\/strong><span style=\"font-size: 0.85rem; color: #666; line-height: 1.55;\">The preform injection mould and blow mould must both physically fit within the machine&#8217;s platen dimensions. For the HGY150-V4, the maximum mould platen is 4,200 x 1,400mm. Bottle diameter and cavity pitch set the minimum mould width per cavity; beyond a certain count, the mould simply exceeds the platen envelope.<\/span><\/div>\n<\/li>\n<\/ul>\n<h3 style=\"font-size: clamp(1rem,2.5vw,1.2rem); font-weight: bold; color: #0056b3; margin: 32px 0 10px; line-height: 1.3;\">4.2 Cavity Count by Bottle Volume \u2014 Reference Guide<\/h3>\n<div style=\"overflow-x: auto; -webkit-overflow-scrolling: touch; border-radius: 10px; box-shadow: 0 4px 16px rgba(0,0,0,0.06); margin: 28px 0;\">\n<table style=\"width: 100%; border-collapse: collapse; font-size: 0.88rem; min-width: 500px;\" role=\"table\">\n<thead>\n<tr style=\"background: #0056b3; color: #fff;\">\n<th style=\"padding: 12px 16px; text-align: left; font-weight: bold; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.4px;\">Bottle Volume<\/th>\n<th style=\"padding: 12px 16px; text-align: left; font-weight: bold; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.4px;\">Typical Preform Weight<\/th>\n<th style=\"padding: 12px 16px; text-align: left; font-weight: bold; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.4px;\">HGY50-V3-EV (max)<\/th>\n<th style=\"padding: 12px 16px; text-align: left; font-weight: bold; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.4px;\">HGY150-V4 (max)<\/th>\n<th style=\"padding: 12px 16px; text-align: left; font-weight: bold; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.4px;\">HGYS280-V6 (max)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr style=\"background: #f8faff;\">\n<td style=\"padding: 11px 16px; border-bottom: 1px solid #eef1f5; font-weight: 600; color: #1a1a1a;\">10 \u2013 30 ml<\/td>\n<td style=\"padding: 11px 16px; border-bottom: 1px solid #eef1f5; color: #444;\">3 \u2013 8 g<\/td>\n<td style=\"padding: 11px 16px; border-bottom: 1px solid #eef1f5; color: #444;\">4 \u2013 6<\/td>\n<td style=\"padding: 11px 16px; border-bottom: 1px solid #eef1f5; color: #444;\">6 \u2013 10<\/td>\n<td style=\"padding: 11px 16px; border-bottom: 1px solid #eef1f5; color: #444;\">12 \u2013 16<\/td>\n<\/tr>\n<tr style=\"background: #fff;\">\n<td style=\"padding: 11px 16px; border-bottom: 1px solid #eef1f5; font-weight: 600; color: #1a1a1a;\">50 \u2013 100 ml<\/td>\n<td style=\"padding: 11px 16px; border-bottom: 1px solid #eef1f5; color: #444;\">10 \u2013 22 g<\/td>\n<td style=\"padding: 11px 16px; border-bottom: 1px solid #eef1f5; color: #444;\">2 \u2013 4<\/td>\n<td style=\"padding: 11px 16px; border-bottom: 1px solid #eef1f5; color: #444;\">4 \u2013 8<\/td>\n<td style=\"padding: 11px 16px; border-bottom: 1px solid #eef1f5; color: #444;\">8 \u2013 12<\/td>\n<\/tr>\n<tr style=\"background: #f8faff;\">\n<td style=\"padding: 11px 16px; border-bottom: 1px solid #eef1f5; font-weight: 600; color: #1a1a1a;\">150 \u2013 300 ml<\/td>\n<td style=\"padding: 11px 16px; border-bottom: 1px solid #eef1f5; color: #444;\">22 \u2013 45 g<\/td>\n<td style=\"padding: 11px 16px; border-bottom: 1px solid #eef1f5; color: #444;\">1 \u2013 2<\/td>\n<td style=\"padding: 11px 16px; border-bottom: 1px solid #eef1f5; color: #444;\">2 \u2013 6<\/td>\n<td style=\"padding: 11px 16px; border-bottom: 1px solid #eef1f5; color: #444;\">4 \u2013 8<\/td>\n<\/tr>\n<tr style=\"background: #fff;\">\n<td style=\"padding: 11px 16px; border-bottom: 1px solid #eef1f5; font-weight: 600; color: #1a1a1a;\">500 \u2013 1,000 ml<\/td>\n<td style=\"padding: 11px 16px; border-bottom: 1px solid #eef1f5; color: #444;\">50 \u2013 90 g<\/td>\n<td style=\"padding: 11px 16px; border-bottom: 1px solid #eef1f5; color: #444;\">1<\/td>\n<td style=\"padding: 11px 16px; border-bottom: 1px solid #eef1f5; color: #444;\">1 \u2013 2<\/td>\n<td style=\"padding: 11px 16px; border-bottom: 1px solid #eef1f5; color: #444;\">2 \u2013 4<\/td>\n<\/tr>\n<tr style=\"background: #f8faff;\">\n<td style=\"padding: 11px 16px; border-bottom: none; font-weight: 600; color: #1a1a1a;\">1,500 \u2013 2,500 ml<\/td>\n<td style=\"padding: 11px 16px; border-bottom: none; color: #444;\">90 \u2013 130 g<\/td>\n<td style=\"padding: 11px 16px; border-bottom: none; color: #444;\">\u2014<\/td>\n<td style=\"padding: 11px 16px; border-bottom: none; color: #444;\">1<\/td>\n<td style=\"padding: 11px 16px; border-bottom: none; color: #444;\">1 \u2013 2<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p><!-- \u2550\u2550\u2550 Section 5 \u2550\u2550\u2550 --><\/p>\n<h2 id=\"machine-data\" style=\"font-size: clamp(1.2rem,3vw,1.6rem); font-weight: 800; color: #1a1a1a; margin: 52px 0 16px; line-height: 1.25; padding-top: 8px;\">5. Real Machine Data: HGY50 to HGYS280 Output Comparison<\/h2>\n<p style=\"font-size: 1rem; color: #444; line-height: 1.8; margin-bottom: 18px;\">The following table compares the five ISBM machine platforms in the Henggang range, using a standardised reference bottle (30ml cosmetic serum, PETG, 6g preform, 4-cavity mould where available) to illustrate the output scaling from entry-level to high-volume production.<\/p>\n<div style=\"overflow-x: auto; -webkit-overflow-scrolling: touch; border-radius: 10px; box-shadow: 0 4px 16px rgba(0,0,0,0.06); margin: 28px 0;\">\n<table style=\"width: 100%; border-collapse: collapse; font-size: 0.85rem; min-width: 620px;\" role=\"table\">\n<thead>\n<tr style=\"background: #0056b3; color: #fff;\">\n<th style=\"padding: 12px 14px; text-align: left; font-weight: bold; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.4px;\">Model<\/th>\n<th style=\"padding: 12px 14px; text-align: left; font-weight: bold; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.4px;\">Stations<\/th>\n<th style=\"padding: 12px 14px; text-align: left; font-weight: bold; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.4px;\">Injection Cap.<\/th>\n<th style=\"padding: 12px 14px; text-align: left; font-weight: bold; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.4px;\">Max Cavities (30ml)<\/th>\n<th style=\"padding: 12px 14px; text-align: left; font-weight: bold; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.4px;\">Typical Cycle<\/th>\n<th style=\"padding: 12px 14px; text-align: left; font-weight: bold; font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.4px;\">Theoretical BPH<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr style=\"background: #f8faff;\">\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #eef1f5; font-weight: bold; color: #0056b3;\">HGY50-V3-EV<\/td>\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #eef1f5; color: #444;\">3-station<\/td>\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #eef1f5; color: #444;\">239 g<\/td>\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #eef1f5; color: #444;\">4 \u2013 6<\/td>\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #eef1f5; color: #444;\">4.5 \u2013 5.5 s<\/td>\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #eef1f5; color: #1a1a1a; font-weight: bold;\">2,618 \u2013 4,800<\/td>\n<\/tr>\n<tr style=\"background: #fff;\">\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #eef1f5; font-weight: bold; color: #0056b3;\">HGY150-V4<\/td>\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #eef1f5; color: #444;\">4-station<\/td>\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #eef1f5; color: #444;\">310 g<\/td>\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #eef1f5; color: #444;\">6 \u2013 8<\/td>\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #eef1f5; color: #444;\">5.0 \u2013 6.5 s<\/td>\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #eef1f5; color: #1a1a1a; font-weight: bold;\">3,323 \u2013 5,760<\/td>\n<\/tr>\n<tr style=\"background: #f8faff;\">\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #eef1f5; font-weight: bold; color: #0056b3;\">HGY150-V4-EV<\/td>\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #eef1f5; color: #444;\">4-station<\/td>\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #eef1f5; color: #444;\">392 g<\/td>\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #eef1f5; color: #444;\">6 \u2013 8<\/td>\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #eef1f5; color: #444;\">4.5 \u2013 6.0 s<\/td>\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #eef1f5; color: #1a1a1a; font-weight: bold;\">3,600 \u2013 6,400<\/td>\n<\/tr>\n<tr style=\"background: #fff;\">\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #eef1f5; font-weight: bold; color: #0056b3;\">Y150-V4-B<\/td>\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #eef1f5; color: #444;\">4-station<\/td>\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #eef1f5; color: #444;\">392 g<\/td>\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #eef1f5; color: #444;\">6 \u2013 8<\/td>\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #eef1f5; color: #444;\">4.0 \u2013 5.5 s<\/td>\n<td style=\"padding: 11px 14px; border-bottom: 1px solid #eef1f5; color: #1a1a1a; font-weight: bold;\">3,927 \u2013 7,200<\/td>\n<\/tr>\n<tr style=\"background: #f8faff;\">\n<td style=\"padding: 11px 14px; border-bottom: none; font-weight: bold; color: #0056b3;\">HGYS280-V6<\/td>\n<td style=\"padding: 11px 14px; border-bottom: none; color: #444;\">6-station<\/td>\n<td style=\"padding: 11px 14px; border-bottom: none; color: #444;\">680 g<\/td>\n<td style=\"padding: 11px 14px; border-bottom: none; color: #444;\">12 \u2013 16<\/td>\n<td style=\"padding: 11px 14px; border-bottom: none; color: #444;\">5.5 \u2013 7.0 s<\/td>\n<td style=\"padding: 11px 14px; border-bottom: none; color: #1a1a1a; font-weight: bold;\">6,171 \u2013 10,473<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<div style=\"background: #e8f4ff; border-left: 5px solid #0056b3; border-radius: 0 8px 8px 0; padding: 18px 22px; margin: 28px 0;\">\n<p style=\"margin: 0; font-size: 0.95rem; color: #003d82; line-height: 1.7;\"><strong style=\"color: #002868;\">Note on published vs actual output:<\/strong> Machine specification sheets typically publish the upper end of the theoretical BPH range \u2014 the figure achieved with the minimum cavity count, lightest preform and shortest possible cycle. For production planning, use the midpoint of the range shown and apply an OEE factor of 0.80\u20130.85.<\/p>\n<\/div>\n<p><!-- Image 2 --><\/p>\n<div style=\"margin: 36px 0;\"><img decoding=\"async\" style=\"width: 100%; border-radius: 10px; box-shadow: 0 8px 28px rgba(0,0,0,0.08);\" src=\"https:\/\/injectionstretchblowmolding.com\/wp-content\/uploads\/2026\/07\/High-resolution-image-of-ISBM-machine.webp\" alt=\"HGY150-V4-EV fully servo 4-station ISBM machine \u2014 injection unit and rotary table for output calculation reference\" \/><\/p>\n<p style=\"text-align: center; font-size: 0.78rem; color: #999; margin-top: 10px; font-style: italic; line-height: 1.5;\">Fig. 2 \u2014 The HGY150-V4-EV 4-station fully servo machine. Its 392g injection capacity and dual servo clamping system support up to 8 cavities for 30ml bottles, delivering theoretical output of up to 6,400 BPH. The full servo drive (10 servo axes) also reduces non-productive motion time by 10\u201315% compared to hydraulic equivalents, directly improving cycle time.<\/p>\n<\/div>\n<p><!-- \u2550\u2550\u2550 Section 6 \u2550\u2550\u2550 --><\/p>\n<h2 id=\"efficiency\" style=\"font-size: clamp(1.2rem,3vw,1.6rem); font-weight: 800; color: #1a1a1a; margin: 52px 0 16px; line-height: 1.25; padding-top: 8px;\">6. OEE and Line Efficiency: From Theoretical to Actual Output<\/h2>\n<p style=\"font-size: 1rem; color: #444; line-height: 1.8; margin-bottom: 18px;\">Overall Equipment Effectiveness (OEE) is the ratio of actual output to theoretical maximum output over a given period. It captures three distinct losses that reduce real-world production below the theoretical figure:<\/p>\n<div class=\"formula-grid\" style=\"display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; margin: 28px 0;\">\n<div style=\"background: #fff; border: 1px solid #e4eaf2; border-radius: 10px; padding: 20px 18px; border-top: 4px solid #0056b3; text-align: center;\">\n<div style=\"font-size: 1.6rem; font-weight: 800; color: #0056b3; margin-bottom: 8px;\">A<\/div>\n<div style=\"font-size: 0.9rem; font-weight: bold; color: #1a1a1a; margin-bottom: 8px;\">Availability<\/div>\n<p style=\"font-size: 0.82rem; color: #666; line-height: 1.55; margin: 0;\">Planned uptime minus unplanned stoppages (breakdowns, material outages, changeovers). Typical ISBM availability: <strong style=\"color: #1a1a1a;\">88\u201395%<\/strong><\/p>\n<\/div>\n<div style=\"background: #fff; border: 1px solid #e4eaf2; border-radius: 10px; padding: 20px 18px; border-top: 4px solid #0056b3; text-align: center;\">\n<div style=\"font-size: 1.6rem; font-weight: 800; color: #0056b3; margin-bottom: 8px;\">P<\/div>\n<div style=\"font-size: 0.9rem; font-weight: bold; color: #1a1a1a; margin-bottom: 8px;\">Performance<\/div>\n<p style=\"font-size: 0.82rem; color: #666; line-height: 1.55; margin: 0;\">Actual cycle time versus ideal cycle time. Includes slow running during startup and minor speed reductions. Typical ISBM performance: <strong style=\"color: #1a1a1a;\">90\u201396%<\/strong><\/p>\n<\/div>\n<div style=\"background: #fff; border: 1px solid #e4eaf2; border-radius: 10px; padding: 20px 18px; border-top: 4px solid #0056b3; text-align: center;\">\n<div style=\"font-size: 1.6rem; font-weight: 800; color: #0056b3; margin-bottom: 8px;\">Q<\/div>\n<div style=\"font-size: 0.9rem; font-weight: bold; color: #1a1a1a; margin-bottom: 8px;\">Quality<\/div>\n<p style=\"font-size: 0.82rem; color: #666; line-height: 1.55; margin: 0;\">Good bottles produced versus total bottles produced. Rejects from startup, parameter drift and process upsets. Typical ISBM quality rate: <strong style=\"color: #1a1a1a;\">97\u201399.5%<\/strong><\/p>\n<\/div>\n<\/div>\n<div style=\"background: #1a2a3a; border-radius: 10px; padding: 24px 28px; margin: 24px 0; text-align: center;\">\n<p style=\"color: rgba(255,255,255,0.6); font-size: 0.78rem; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 12px;\">OEE Formula<\/p>\n<p style=\"color: #4caf82; font-size: 1.3rem; font-weight: 800; font-family: monospace; margin-bottom: 8px;\">OEE = A \u00d7 P \u00d7 Q<\/p>\n<p style=\"color: rgba(255,255,255,0.65); font-size: 0.85rem; line-height: 1.6; margin: 0;\">Typical well-run ISBM line: 0.91 \u00d7 0.93 \u00d7 0.985 = <strong style=\"color: #fff;\">OEE 0.834<\/strong><\/p>\n<\/div>\n<p style=\"font-size: 1rem; color: #444; line-height: 1.8; margin-bottom: 18px;\">For production planning purposes, use an OEE of <strong style=\"color: #1a1a1a;\">0.80 for new lines<\/strong> (while operators are still on the learning curve) and <strong style=\"color: #1a1a1a;\">0.85 for established lines<\/strong> with experienced operators and a functioning preventive maintenance programme. Do not plan against theoretical output \u2014 a capacity plan built on 100% theoretical output will miss its targets every month.<\/p>\n<p><!-- \u2550\u2550\u2550 Section 7 \u2550\u2550\u2550 --><\/p>\n<h2 id=\"air-supply\" style=\"font-size: clamp(1.2rem,3vw,1.6rem); font-weight: 800; color: #1a1a1a; margin: 52px 0 16px; line-height: 1.25; padding-top: 8px;\">7. Auxiliary Constraints: How Air Supply Limits Peak Output<\/h2>\n<p style=\"font-size: 1rem; color: #444; line-height: 1.8; margin-bottom: 18px;\">One of the most frequently overlooked output constraints is the compressed air supply. ISBM stretch blow stations consume high-pressure air (typically 2.0\u20133.5 MPa) in bursts \u2014 one burst per cycle, with all cavities blowing simultaneously. The peak instantaneous flow demand during the blow phase can be three to five times the average flow demand over the full cycle.<\/p>\n<p style=\"font-size: 1rem; color: #444; line-height: 1.8; margin-bottom: 18px;\">If the air supply system cannot deliver the peak flow without a pressure drop, two failure modes occur: the blow pressure falls below the minimum required to fully expand the preform against the mould cavity (resulting in short-blown bottles with thick walls and visible underfill), or the cycle time extends while the machine waits for pressure to recover between shots (directly reducing BPH).<\/p>\n<div style=\"background: #e8f4ff; border-left: 5px solid #0056b3; border-radius: 0 8px 8px 0; padding: 18px 22px; margin: 28px 0;\">\n<p style=\"margin: 0; font-size: 0.95rem; color: #003d82; line-height: 1.7;\"><strong style=\"color: #002868;\">Air compressor sizing rule:<\/strong> Size your <a style=\"color: #0056b3; font-weight: 600; text-decoration: underline;\" href=\"https:\/\/oilless-air-compressor.net\/application\/40-bar-oil-free-water-lubricated-air-compressor-for-one-step-injection-stretch-blow-molding-isbm-machine\/\" target=\"_blank\" rel=\"noopener noreferrer\">oil-free air compressor for ISBM<\/a> at a minimum of 1.5 times the machine&#8217;s published average air consumption, and pair it with a receiver tank of at least 500 litres to buffer peak demand. An undersized compressor is the most common reason for an ISBM line running consistently below its theoretical output despite correct machine settings.<\/p>\n<\/div>\n<div style=\"overflow-x: auto; -webkit-overflow-scrolling: touch; border-radius: 10px; box-shadow: 0 4px 16px rgba(0,0,0,0.06); margin: 28px 0;\">\n<table style=\"width: 100%; border-collapse: collapse; font-size: 0.88rem; min-width: 500px;\" role=\"table\">\n<thead>\n<tr style=\"background: #0056b3; color: #fff;\">\n<th style=\"padding: 12px 16px; text-align: left; font-weight: bold; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.4px;\">Machine<\/th>\n<th style=\"padding: 12px 16px; text-align: left; font-weight: bold; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.4px;\">High-P Air Consumption<\/th>\n<th style=\"padding: 12px 16px; text-align: left; font-weight: bold; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.4px;\">Recommended Compressor<\/th>\n<th style=\"padding: 12px 16px; text-align: left; font-weight: bold; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.4px;\">Receiver Tank<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr style=\"background: #f8faff;\">\n<td style=\"padding: 11px 16px; border-bottom: 1px solid #eef1f5; font-weight: 600; color: #1a1a1a;\">HGY50-V3-EV<\/td>\n<td style=\"padding: 11px 16px; border-bottom: 1px solid #eef1f5; color: #444;\">100 L\/min<\/td>\n<td style=\"padding: 11px 16px; border-bottom: 1px solid #eef1f5; color: #444;\">7.5 kW \/ 150 L\/min<\/td>\n<td style=\"padding: 11px 16px; border-bottom: 1px solid #eef1f5; color: #444;\">300 L<\/td>\n<\/tr>\n<tr style=\"background: #fff;\">\n<td style=\"padding: 11px 16px; border-bottom: 1px solid #eef1f5; font-weight: 600; color: #1a1a1a;\">HGY150-V4<\/td>\n<td style=\"padding: 11px 16px; border-bottom: 1px solid #eef1f5; color: #444;\">300 L\/min<\/td>\n<td style=\"padding: 11px 16px; border-bottom: 1px solid #eef1f5; color: #444;\">22 kW \/ 450 L\/min<\/td>\n<td style=\"padding: 11px 16px; border-bottom: 1px solid #eef1f5; color: #444;\">500 L<\/td>\n<\/tr>\n<tr style=\"background: #f8faff;\">\n<td style=\"padding: 11px 16px; border-bottom: 1px solid #eef1f5; font-weight: 600; color: #1a1a1a;\">HGY150-V4-EV<\/td>\n<td style=\"padding: 11px 16px; border-bottom: 1px solid #eef1f5; color: #444;\">350 L\/min<\/td>\n<td style=\"padding: 11px 16px; border-bottom: 1px solid #eef1f5; color: #444;\">22 kW \/ 500 L\/min<\/td>\n<td style=\"padding: 11px 16px; border-bottom: 1px solid #eef1f5; color: #444;\">500 L<\/td>\n<\/tr>\n<tr style=\"background: #fff;\">\n<td style=\"padding: 11px 16px; border-bottom: none; font-weight: 600; color: #1a1a1a;\">HGYS280-V6<\/td>\n<td style=\"padding: 11px 16px; border-bottom: none; color: #444;\">800 L\/min<\/td>\n<td style=\"padding: 11px 16px; border-bottom: none; color: #444;\">55 kW \/ 1,200 L\/min<\/td>\n<td style=\"padding: 11px 16px; border-bottom: none; color: #444;\">1,000 L<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p><!-- \u2550\u2550\u2550 Section 8 \u2550\u2550\u2550 --><\/p>\n<h2 id=\"worked-example\" style=\"font-size: clamp(1.2rem,3vw,1.6rem); font-weight: 800; color: #1a1a1a; margin: 52px 0 16px; line-height: 1.25; padding-top: 8px;\">8. Worked Example: Sizing a Machine for 5 Million Bottles per Year<\/h2>\n<p style=\"font-size: 1rem; color: #444; line-height: 1.8; margin-bottom: 18px;\">A cosmetic brand requires 5,000,000 units per year of a 50ml PETG serum bottle, preform weight 12g. The factory operates 20 hours per day, 300 days per year (6,000 production hours annually). Applying the formulas step by step:<\/p>\n<ul style=\"list-style: none; padding: 0; margin: 22px 0; display: flex; flex-direction: column; gap: 14px;\">\n<li style=\"display: flex; gap: 14px; align-items: flex-start; background: #f8f9fa; border-radius: 8px; padding: 14px 16px;\">\n<div style=\"background: #0056b3; color: #fff; font-size: 0.75rem; font-weight: bold; width: 26px; height: 26px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\">1<\/div>\n<div><strong style=\"display: block; color: #1a1a1a; font-size: 0.95rem; margin-bottom: 3px;\">Required hourly output<\/strong><span style=\"font-size: 0.85rem; color: #666; line-height: 1.55;\">5,000,000 \u00f7 6,000 hours = <strong style=\"color: #0056b3;\">833 bottles per hour minimum<\/strong> actual output (before OEE factor).<\/span><\/div>\n<\/li>\n<li style=\"display: flex; gap: 14px; align-items: flex-start; background: #f8f9fa; border-radius: 8px; padding: 14px 16px;\">\n<div style=\"background: #0056b3; color: #fff; font-size: 0.75rem; font-weight: bold; width: 26px; height: 26px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\">2<\/div>\n<div><strong style=\"display: block; color: #1a1a1a; font-size: 0.95rem; margin-bottom: 3px;\">Apply OEE factor<\/strong><span style=\"font-size: 0.85rem; color: #666; line-height: 1.55;\">At OEE 0.82, required theoretical BPH = 833 \u00f7 0.82 = <strong style=\"color: #0056b3;\">1,016 theoretical BPH<\/strong>.<\/span><\/div>\n<\/li>\n<li style=\"display: flex; gap: 14px; align-items: flex-start; background: #f8f9fa; border-radius: 8px; padding: 14px 16px;\">\n<div style=\"background: #0056b3; color: #fff; font-size: 0.75rem; font-weight: bold; width: 26px; height: 26px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\">3<\/div>\n<div><strong style=\"display: block; color: #1a1a1a; font-size: 0.95rem; margin-bottom: 3px;\">Estimate cycle time for this bottle<\/strong><span style=\"font-size: 0.85rem; color: #666; line-height: 1.55;\">50ml PETG at 12g preform: injection time approximately 5.5\u20136.5s (dominant station). Use 6.0s as the planning cycle time.<\/span><\/div>\n<\/li>\n<li style=\"display: flex; gap: 14px; align-items: flex-start; background: #f8f9fa; border-radius: 8px; padding: 14px 16px;\">\n<div style=\"background: #0056b3; color: #fff; font-size: 0.75rem; font-weight: bold; width: 26px; height: 26px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\">4<\/div>\n<div><strong style=\"display: block; color: #1a1a1a; font-size: 0.95rem; margin-bottom: 3px;\">Calculate required cavity count<\/strong><span style=\"font-size: 0.85rem; color: #666; line-height: 1.55;\">N = (BPH \u00d7 CT) \u00f7 3,600 = (1,016 \u00d7 6.0) \u00f7 3,600 = <strong style=\"color: #0056b3;\">1.69 cavities<\/strong>. Round up to <strong style=\"color: #0056b3;\">2 cavities minimum<\/strong>.<\/span><\/div>\n<\/li>\n<li style=\"display: flex; gap: 14px; align-items: flex-start; background: #f8f9fa; border-radius: 8px; padding: 14px 16px;\">\n<div style=\"background: #0056b3; color: #fff; font-size: 0.75rem; font-weight: bold; width: 26px; height: 26px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\">5<\/div>\n<div><strong style=\"display: block; color: #1a1a1a; font-size: 0.95rem; margin-bottom: 3px;\">Machine selection<\/strong><span style=\"font-size: 0.85rem; color: #666; line-height: 1.55;\">A 2-cavity mould on the HGY50-V3-EV (239g injection capacity; 2 cavities \u00d7 12g = 24g, well within range) delivers theoretical BPH = (3,600 \u00f7 6.0) \u00d7 2 = 1,200 BPH. At OEE 0.82: 984 actual BPH. This exceeds the 833 BPH target. <strong style=\"color: #0056b3;\">Recommended: HGY50-V3-EV with 2-cavity mould.<\/strong><\/span><\/div>\n<\/li>\n<li style=\"display: flex; gap: 14px; align-items: flex-start; background: #f8f9fa; border-radius: 8px; padding: 14px 16px;\">\n<div style=\"background: #0056b3; color: #fff; font-size: 0.75rem; font-weight: bold; width: 26px; height: 26px; border-radius: 50%; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-top: 1px;\">6<\/div>\n<div><strong style=\"display: block; color: #1a1a1a; font-size: 0.95rem; margin-bottom: 3px;\">Capacity headroom<\/strong><span style=\"font-size: 0.85rem; color: #666; line-height: 1.55;\">984 actual BPH vs 833 required = 18% headroom. Sufficient buffer for unplanned downtime, product launches and volume growth within the planning horizon without additional capital expenditure.<\/span><\/div>\n<\/li>\n<\/ul>\n<div style=\"background: #f0f7ff; border: 1px solid #cde0f5; border-radius: 10px; padding: 22px 26px; margin: 28px 0;\"><span style=\"font-size: 0.72rem; font-weight: bold; text-transform: uppercase; letter-spacing: 0.8px; color: #0056b3; margin-bottom: 8px; display: block;\">Summary \u2014 key formulas<\/span><\/p>\n<p style=\"margin: 0 0 10px; font-size: 0.9rem; color: #333; line-height: 1.75; font-family: monospace;\"><strong>Theoretical BPH<\/strong> = (3,600 \u00f7 Cycle Time) \u00d7 Cavities<\/p>\n<p style=\"margin: 0 0 10px; font-size: 0.9rem; color: #333; line-height: 1.75; font-family: monospace;\"><strong>Actual BPH<\/strong> = Theoretical BPH \u00d7 OEE (use 0.80\u20130.85)<\/p>\n<p style=\"margin: 0 0 10px; font-size: 0.9rem; color: #333; line-height: 1.75; font-family: monospace;\"><strong>Annual volume<\/strong> = Actual BPH \u00d7 Hours\/Day \u00d7 Days\/Year<\/p>\n<p style=\"margin: 0; font-size: 0.9rem; color: #333; line-height: 1.75; font-family: monospace;\"><strong>Required cavities<\/strong> = (Required BPH \u00d7 Cycle Time) \u00f7 3,600 \u2014 then round up<\/p>\n<\/div>\n<p><!-- Image 3 --><\/p>\n<div style=\"margin: 36px 0;\"><img decoding=\"async\" style=\"width: 100%; border-radius: 10px; box-shadow: 0 8px 28px rgba(0,0,0,0.08);\" src=\"https:\/\/injectionstretchblowmolding.com\/wp-content\/uploads\/2026\/08\/bottle-sample-4.webp\" alt=\"PET and PETG bottle samples produced by ISBM machine \u2014 output planning reference for beverage and cosmetic packaging\" \/><\/p>\n<p style=\"text-align: center; font-size: 0.78rem; color: #999; margin-top: 10px; font-style: italic; line-height: 1.5;\">Fig. 3 \u2014 PET and PETG bottle samples produced by one-step ISBM. Output rates for containers in this volume range (30\u2013200ml) are determined primarily by preform injection time and cavity count \u2014 not by the blow station, which is typically faster than injection for standard thin-walled geometries.<\/p>\n<\/div>\n<hr style=\"height: 1px; background: #eef1f5; border: none; margin: 40px 0;\" \/>\n<p><!-- Image 4 --><\/p>\n<div style=\"margin: 36px 0;\"><img decoding=\"async\" style=\"width: 100%; border-radius: 10px; box-shadow: 0 8px 28px rgba(0,0,0,0.08);\" src=\"https:\/\/injectionstretchblowmolding.com\/wp-content\/uploads\/2026\/07\/One-Step-Injection-Stretch-Blow-Molding-ISBM-Moulds.webp\" alt=\"One-step ISBM preform injection mold and blow mold \u2014 cavity count determines output multiplier\" \/><\/p>\n<p style=\"text-align: center; font-size: 0.78rem; color: #999; margin-top: 10px; font-style: italic; line-height: 1.5;\">Fig. 4 \u2014 ISBM preform injection mould (left) and blow mould set (right). The cavity count in both moulds must match \u2014 adding a cavity to one without the other is not possible. Mould investment is typically the highest single cost in an ISBM project after the machine itself, making cavity count selection a critical capital efficiency decision.<\/p>\n<\/div>\n<p><!-- CTA Box --><\/p>\n<div class=\"article-cta-box\" style=\"background: linear-gradient(135deg,#003d82 0%,#0056b3 100%); border-radius: 14px; padding: 44px 40px; margin-top: 56px; color: #fff; text-align: center;\">\n<h3 class=\"cta-h3\" style=\"font-size: clamp(1.2rem,3vw,1.6rem); font-weight: 800; margin-bottom: 12px; line-height: 1.25; color: #fff;\">Need an Output Calculation for Your Specific Bottle?<\/h3>\n<p style=\"font-size: 0.97rem; opacity: 0.85; line-height: 1.65; margin-bottom: 28px; max-width: 520px; margin-left: auto; margin-right: auto;\">Send us your bottle volume, preform weight estimate, resin type and annual volume target. Our engineers will calculate the recommended cycle time, cavity count and machine platform \u2014 and confirm whether the numbers work for your production plan.<\/p>\n<div class=\"cta-btn-group\" style=\"display: flex; gap: 12px; justify-content: center; flex-wrap: wrap;\"><a class=\"cta-btn-white\" style=\"display: inline-flex; align-items: center; gap: 7px; background: #fff; color: #0056b3; padding: 12px 24px; border-radius: 7px; text-decoration: none; font-weight: bold; font-size: 0.9rem; white-space: nowrap;\" href=\"https:\/\/injectionstretchblowmolding.com\/ur\/contact-us\/\">Send Your Production Requirements \u2192<\/a><br \/>\n<a class=\"cta-btn-ghost\" style=\"display: inline-flex; align-items: center; gap: 7px; background: rgba(255,255,255,0.1); color: #fff; padding: 12px 22px; border-radius: 7px; border: 1px solid rgba(255,255,255,0.25); text-decoration: none; font-weight: 600; font-size: 0.9rem; white-space: nowrap;\" href=\"https:\/\/wa.me\/79103473993\" target=\"_blank\" rel=\"noopener noreferrer\">WhatsApp Our Engineers<\/a><\/div>\n<\/div>\n<\/div>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>Output is the number that justifies every ISBM machine investment. Yet it is also one of the most misquoted specifications in the industry \u2014 because manufacturers publish theoretical maximum figures based on the fastest possible cycle time, the fewest cavities and the lightest possible bottle. Real-world output is almost always lower, and understanding why requires [&hellip;]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-632","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/injectionstretchblowmolding.com\/ur\/wp-json\/wp\/v2\/posts\/632","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/injectionstretchblowmolding.com\/ur\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/injectionstretchblowmolding.com\/ur\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/injectionstretchblowmolding.com\/ur\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/injectionstretchblowmolding.com\/ur\/wp-json\/wp\/v2\/comments?post=632"}],"version-history":[{"count":2,"href":"https:\/\/injectionstretchblowmolding.com\/ur\/wp-json\/wp\/v2\/posts\/632\/revisions"}],"predecessor-version":[{"id":634,"href":"https:\/\/injectionstretchblowmolding.com\/ur\/wp-json\/wp\/v2\/posts\/632\/revisions\/634"}],"wp:attachment":[{"href":"https:\/\/injectionstretchblowmolding.com\/ur\/wp-json\/wp\/v2\/media?parent=632"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/injectionstretchblowmolding.com\/ur\/wp-json\/wp\/v2\/categories?post=632"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/injectionstretchblowmolding.com\/ur\/wp-json\/wp\/v2\/tags?post=632"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}