{"id":614,"date":"2026-08-12T06:39:52","date_gmt":"2026-08-12T06:39:52","guid":{"rendered":"https:\/\/injectionstretchblowmolding.com\/?post_type=product&p=614"},"modified":"2026-08-12T06:39:52","modified_gmt":"2026-08-12T06:39:52","slug":"irregularly-shaped-bottle-series-blow-molding-machines","status":"publish","type":"product","link":"https:\/\/injectionstretchblowmolding.com\/vi\/product\/irregularly-shaped-bottle-series-blow-molding-machines\/","title":{"rendered":"Irregularly Shaped Bottle Series Blow Molding Machines"},"content":{"rendered":"
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PET & PETG Blow Molding Expert \u00b7 Irregularly Shaped Bottle Series Guide<\/div>\n

Irregularly Shaped Bottle Series
\nBlow Molding Machines \u2014 Complete Model Guide<\/h1>\n
5 models \u2014 all AS-grade high-precision servo \u2014 two-step automatic PET and PETG stretch blow molding machines purpose-built for non-standard, asymmetric, and decorative bottle geometries. From 38 mm narrow-neck craft and cosmetic bottles to 114.3 mm wide-neck artisan containers, covering 150 ml miniature collectibles through to 700 ml premium spirits and specialty packaging. Delivering the dimensional precision that complex mold geometry demands, where standard servo machines produce unacceptable wall-thickness variation and stress whitening on irregular cross-sections.<\/div>\n
\u25ba 1 \u2013 4 Cavities<\/span>
\n\u25ba 150 ml \u2013 700 ml<\/span>
\n\u25ba 500 \u2013 4,000 bph<\/span>
\n\u25ba 38 mm \u2013 114.3 mm Neck<\/span>
\n\u25ba AS-Grade Precision All Models<\/span>
\n\u25ba CE Certified<\/span><\/div>\n<\/div>\n

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1. Product Overview<\/h2>\n

The Irregularly Shaped Bottle Series Blow Molding Machines<\/strong> comprise 5 models \u2014 all AS-grade high-precision servo \u2014 designed exclusively for non-standard, asymmetric, multi-faceted, and decorative bottle geometries that cannot be reliably produced on standard servo machines. The series addresses the fundamental challenge of irregularly shaped bottle production: when a preform is stretched into a non-cylindrical mold geometry, differential radial resistance across the cross-section causes wall-thickness variation, stress whitening, and surface distortion unless the stretch and blow parameters are controlled to a precision level beyond what standard machines deliver.<\/p>\n

All models use AS-grade servo motors and precision reducers \u2014 the same higher-specification drive system used in the pharmaceutical and baby bottle series \u2014 providing \u00b10.03 mm stretch-rod positioning accuracy and sub-millisecond blow-timing control that maintains wall-thickness uniformity across all facets of complex bottle geometry. PETG processing capability is built into all models, enabling the superior surface clarity, gloss, and scratch resistance that premium decorative bottle applications require.<\/p>\n

The series spans from the AS-4C38<\/strong> (4 cavity, 4,000 bph, 38 mm neck) for high-volume miniature perfume vials and cosmetic sample bottles, through 2-cavity mid-volume platforms for premium spirits, artisan spirits, and specialty food packaging, to the single-cavity AS-1C114.3<\/strong> (500 bph, 114.3 mm neck) for wide-mouth decorative jars and premium gift packaging requiring maximum per-bottle precision at modest production volumes.<\/p>\n

Applicable Industries & Applications<\/h3>\n
\u2713 Perfume & Fragrance Bottles<\/span>
\n\u2713 Premium Spirits & Liqueur Bottles<\/span>
\n\u2713 Artisan & Craft Beverage Packaging<\/span>
\n\u2713 Decorative Cosmetic Containers<\/span>
\n\u2713 Gift & Luxury Packaging<\/span>
\n\u2713 Specialty Food & Condiment Bottles<\/span>
\n\u2713 Miniature Collectible & Travel Bottles<\/span>
\n\u2713 Custom OEM Decorative Packaging<\/span><\/div>\n<\/div>\n

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2. Working Principle<\/h2>\n

All models operate on the two-step reheat stretch blow molding (RSBM)<\/strong> process. PET or PETG preforms are automatically fed, oriented, and conveyed through a multi-zone NIR oven. For irregularly shaped bottles, preform design is more critical than in standard cylindrical packaging \u2014 the preform wall profile must be engineered to account for differential stretch ratios across the cross-section, providing more material at positions that will undergo greater radial expansion in the finished bottle.<\/p>\n

At the blow station, the AS-grade servo stretch rod extends axially with \u00b10.03 mm positioning accuracy while low-pressure pre-blowing initiates radial expansion. The critical AS-grade advantage for irregular geometries is sub-millisecond blow-timing control<\/strong>: in a non-cylindrical mold, different faces of the bottle reach their mold wall at different moments. Premature high-pressure application before all faces have seated causes surface stress marks on the last-seating faces. The AS-grade servo’s timing precision minimises this differential, enabling wall uniformity on hexagonal, oval, flattened, and multi-faceted bottle profiles that standard servo machines cannot achieve.<\/p>\n

PETG processing<\/strong> \u2014 available on all models \u2014 provides superior surface clarity, higher gloss, and better impact resistance for decorative bottles where visual presentation is the primary commercial driver. PETG has lower processing shrinkage than PET, providing better dimensional accuracy on complex mold geometries with fine surface detail. PLC recipe sets for PET-mode and PETG-mode are stored separately and selected on the HMI without hardware changes.<\/p>\n

Key structural components:<\/strong> AS-grade servo-electric toggle-link clamping \u2022 AS-grade per-cavity servo stretch rod with \u00b10.03 mm accuracy \u2022 multi-zone NIR oven with precision neck-protection cooling \u2022 automatic preform feeder and orientation system \u2022 Siemens\/Mitsubishi PLC with PET\/PETG dual-mode recipe storage \u2022 inline visual and dimensional rejection for surface-quality critical applications.<\/p>\n<\/div>\n

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3. Core Advantages<\/h2>\n
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\u2699<\/div>\n

AS-Grade Precision \u2014 All 5 Models<\/h3>\n

Every model in this series uses AS-grade servo motors and precision reducers \u2014 the only blow molding series where AS-grade precision is standard across all configurations, not a premium upgrade option. This reflects the irreducible precision requirement of non-standard bottle geometry, where standard servo machines produce commercially unacceptable surface quality on complex cross-sections.<\/p>\n<\/div>\n

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PETG \u2014 Crystal Clarity for Decorative Bottles<\/h3>\n

PETG delivers visibly superior surface clarity, gloss, and scratch resistance versus standard PET \u2014 the difference is commercially significant for premium perfume, spirits, and decorative packaging where glass-like clarity is a purchase driver. PETG also offers better dimensional accuracy on fine-detail mold geometries due to lower processing shrinkage. All models support PETG via stored dual-mode PLC recipes.<\/p>\n<\/div>\n

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\ud83d\udd1c<\/div>\n

38 mm to 114.3 mm \u2014 Full Neck Range<\/h3>\n

The series spans the full neck-diameter range encountered in specialty packaging \u2014 from 38 mm miniature perfume and cosmetic vials (AS-4C38) through 76 mm premium spirits formats (AS-2C76, AS-4C76) to 114.3 mm wide-mouth decorative jars (AS-1C114.3, AS-2C114.3). Five models cover every major specialty packaging neck standard without cross-series compromise.<\/p>\n<\/div>\n

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\ud83c\udf20<\/div>\n

PET vs Glass \u2014 Weight, Safety, Cost<\/h3>\n

Stretch-blown PET and PETG deliver glass-like clarity at 60\u201370% lower weight \u2014 reducing shipping cost and breakage risk across luxury retail distribution. For premium spirits and perfume brands, PET\/PETG irregularly shaped bottles eliminate the glass-breakage liability in travel retail, e-commerce fulfilment, and gift packaging while maintaining the visual sophistication that premium consumers expect.<\/p>\n<\/div>\n

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\ud83c\udf1f<\/div>\n

Sub-Millisecond Blow Timing Control<\/h3>\n

The AS-grade servo’s sub-millisecond blow-timing precision minimises differential face-seating stress on non-cylindrical molds \u2014 the root cause of stress marks on multi-faceted bottle designs. This enables successful production of hexagonal, oval, square-shoulder, and compound-curve bottle geometries that consistently fail on standard servo platforms.<\/p>\n<\/div>\n

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\ud83d\udd0e<\/div>\n

Complete Turnkey Supply<\/h3>\n

We supply irregularly shaped blow molds (including multi-faceted, oval, hexagonal, and bespoke geometry tooling), PET and PETG preform injection molds, industrial chillers, and oil-free compressor packages from a single source \u2014 with DFM review before mold construction to verify stretch-ratio feasibility and wall-thickness distribution for each custom bottle geometry.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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4. Technical Specifications<\/h2>\n
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\u25b6 AS Series \u2014 All-Model AS-Grade High-Precision Servo (1 \/ 2 \/ 4 Cavity, PET \/ PETG)<\/h3>\n

5 models. All AS-grade precision servo drive as standard \u2014 the only blow molding series where every model is AS-grade without exception. Neck diameters from 38 mm (miniature decorative) to 114.3 mm (wide-mouth artisan). Volume range 150 ml to 700 ml.<\/p>\n<\/div>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Parameter \/ Unit<\/th>\nAS-1C114.3<\/th>\nAS-2C76<\/th>\nAS-2C114.3<\/th>\nAS-4C38<\/th>\nAS-4C76<\/th>\n<\/tr>\n<\/thead>\n
Material<\/td>\nPET \/ PETG<\/td>\nPET \/ PETG<\/td>\nPET \/ PETG<\/td>\nPET \/ PETG<\/td>\nPET \/ PETG<\/td>\n<\/tr>\n
Cavities<\/td>\n1<\/td>\n2<\/td>\n2<\/td>\n4<\/td>\n4<\/td>\n<\/tr>\n
Max. Container Volume (ml)<\/td>\n350<\/td>\n700<\/td>\n350<\/td>\n150<\/td>\n700<\/td>\n<\/tr>\n
Output (bph)<\/td>\n500<\/td>\n900<\/td>\n900<\/td>\n4,000<\/td>\n2,000<\/td>\n<\/tr>\n
Max. Neck Diameter (mm)<\/td>\n114.3<\/td>\n76<\/td>\n114.3<\/td>\n38<\/td>\n76<\/td>\n<\/tr>\n
Max. Body Diameter (mm)<\/td>\n80<\/td>\n75<\/td>\n80<\/td>\n45<\/td>\n75<\/td>\n<\/tr>\n
Max. Container Height (mm)<\/td>\n235<\/td>\n250<\/td>\n235<\/td>\n200<\/td>\n250<\/td>\n<\/tr>\n
Clamping Stroke (mm)<\/td>\n122<\/td>\n100<\/td>\n122<\/td>\n60<\/td>\n100<\/td>\n<\/tr>\n
Mold-Open Distance (mm)<\/td>\n302<\/td>\n280<\/td>\n302<\/td>\n220<\/td>\n280<\/td>\n<\/tr>\n
Mold-Close Distance (mm)<\/td>\n180<\/td>\n180<\/td>\n180<\/td>\n138<\/td>\n180<\/td>\n<\/tr>\n
Stretching Stroke (mm)<\/td>\n400<\/td>\n350<\/td>\n400<\/td>\n200<\/td>\n350<\/td>\n<\/tr>\n
Base Mold-Close (mm)<\/td>\n114.3<\/td>\n76<\/td>\n114.3<\/td>\n38<\/td>\n76<\/td>\n<\/tr>\n
Preform Holder<\/td>\n24<\/td>\n48<\/td>\n48<\/td>\n96<\/td>\n96<\/td>\n<\/tr>\n
Max. Heating Power (kW)<\/td>\n20<\/td>\n28<\/td>\n30<\/td>\n28<\/td>\n40<\/td>\n<\/tr>\n
Normal Heating Power (kW)<\/td>\n8<\/td>\n12<\/td>\n15<\/td>\n12<\/td>\n20<\/td>\n<\/tr>\n
Blowing Pressure (kg\/cm\u00b2)<\/td>\n35<\/td>\n35<\/td>\n35<\/td>\n35<\/td>\n35<\/td>\n<\/tr>\n
HP Air Consumption (L\/min)<\/td>\n500<\/td>\n800<\/td>\n1,000<\/td>\n2,000<\/td>\n4,000<\/td>\n<\/tr>\n
LP Air Consumption (L\/min)<\/td>\n300<\/td>\n400<\/td>\n600<\/td>\n600<\/td>\n800<\/td>\n<\/tr>\n
Cooling Water Flow (L\/min)<\/td>\n30<\/td>\n30<\/td>\n30<\/td>\n30<\/td>\n30<\/td>\n<\/tr>\n
Machine Size L\u00d7W\u00d7H (mm)<\/td>\n2150\u00d71660\u00d72150<\/td>\n2660\u00d71660\u00d72150<\/td>\n2660\u00d71660\u00d72150<\/td>\n2900\u00d71850\u00d72100<\/td>\n3290\u00d71850\u00d72260<\/td>\n<\/tr>\n
Machine Weight (kg)<\/td>\n1,500<\/td>\n2,000<\/td>\n2,600<\/td>\n3,500<\/td>\n3,500<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

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\u26a1 Compressed Air Requirement:<\/strong> All models require low-pressure air at 7 kg\/cm\u00b2 and high-pressure air at 35 kg\/cm\u00b2. For cosmetic, food-contact, and pharmaceutical specialty packaging applications, an oil-free compressor is required<\/strong> to prevent hydrocarbon contamination of bottle interiors. Read our technical guide: why PET stretch blow molding demands 40-bar oil-free compressors<\/a> \u2014 we supply matched oil-free compressor packages as part of our complete turnkey solution.<\/div>\n<\/div>\n

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5. Structure & Material Engineering<\/h2>\n
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\u2699 AS-Grade Servo System<\/h3>\n

All five models use higher-specification AS-grade servo motors, precision harmonic reducers, and servo drives \u2014 delivering \u00b10.03 mm stretch-rod positioning accuracy and sub-millisecond blow-valve timing control. These specifications are mandatory for irregular geometries, not optional upgrades. The mechanical drive train is engineered to maintain positional accuracy across the full production speed range, preventing the position drift at elevated cycle rates that causes dimensional variation on complex bottle geometries.<\/p>\n

\ud83d\udee0 Rigid Frame for Complex Mold Loads<\/h3>\n

Irregularly shaped bottle molds generate asymmetric clamping forces across the platen face \u2014 unlike cylindrical bottle molds where clamping load is evenly distributed. The AS-series machine frame and platen are designed with additional rigidity at the non-symmetric loading points, preventing platen deflection that would cause parting-line flash on irregular cross-section molds.<\/p>\n<\/div>\n

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\ud83c\udf21 Decorative Surface NIR Conditioning<\/h3>\n

Decorative bottle preforms often have complex wall-profile distributions to pre-position material for differential stretch zones. The multi-zone NIR oven with individually controlled zone power provides the axial thermal gradient customisation required to heat irregular-profile preforms to the correct stretch temperature at each axial position simultaneously. Zone configurations for each bottle format are stored as PLC recipes \u2014 ensuring reproducible thermal conditioning across production campaigns separated by weeks or months.<\/p>\n

\ud83d\udc89 PETG-Mode Optimisation<\/h3>\n

PETG requires lower blowing temperatures and benefits from faster cooling versus PET to maximise surface gloss and minimise crystallisation haze. All models store dedicated PETG-mode oven profiles, transfer timing, and cooling duration settings as separate on-board recipes \u2014 enabling consistent high-gloss PETG surface finish production without empirical parameter searching at each format changeover.<\/p>\n<\/div>\n

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\ud83d\udd13 Decorative Mold Tooling<\/h3>\n

Irregularly shaped blow molds are machined from high-strength aluminium alloy using 5-axis CNC with surface finish Ra \u2264 0.4 \u03bcm on all visible bottle surfaces \u2014 the standard required for glass-substitute decorative packaging. Conformal cooling channels follow the complex mold cavity geometry, ensuring uniform cooling across all facets of non-cylindrical bottle profiles and preventing the thermal asymmetry that causes post-mold bottle warping. We offer DFM (Design for Manufacturability) review before mold construction at no charge, verifying stretch-ratio feasibility and preform design for each custom geometry.<\/p>\n

\ud83d\udcf1 PLC & Dual-Mode Recipes<\/h3>\n

Siemens or Mitsubishi PLC with HMI. Up to 50 bottle-format recipes stored on-board, including separate PET-mode and PETG-mode sets. Irregular bottle producers typically run multiple SKUs (different bottle silhouettes for different product lines or seasonal editions) \u2014 the on-board recipe storage enables same-day format changeover without manual parameter reconstruction.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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6. Typical Application Scenarios<\/h2>\n
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\ud83d\udc90 Perfume & Fragrance Vials<\/h3>\n<\/div>\n
The AS-4C38 (4 cavity, 4,000 bph, 38 mm neck, up to 150 ml) is the primary platform for perfume vials, fragrance sample bottles, and miniature cosmetic containers. At 38 mm neck diameter, these formats are too narrow for standard blow molders but too small for extrusion blow \u2014 the AS-4C38 fills this gap with fully automatic stretch blow production at commercially viable throughput. PETG mode delivers the glass-substitute clarity and gloss that perfume retail demands.<\/div>\n<\/div>\n
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\ud83c\udf78 Premium Spirits & Liqueur Bottles<\/h3>\n<\/div>\n
The AS-2C76 (2 cavity, 900 bph, 76 mm neck, up to 700 ml) and AS-4C76 (4 cavity, 2,000 bph) produce the faceted, oval, and angular bottle silhouettes used by artisan spirits, craft gin, premium vodka, and liqueur brands that differentiate through distinctive packaging geometry. PET or PETG bottles at 700 ml replace glass in travel retail, airline service, and e-commerce channels where glass breakage risk and weight cost are disqualifying.<\/div>\n<\/div>\n
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\ud83c\udf3c Decorative Cosmetic Containers<\/h3>\n<\/div>\n
Asymmetric cosmetic packaging \u2014 curved shoulder profiles, tapered waist geometries, embossed surface textures \u2014 requires the AS-grade stretch precision to avoid wall thinning on the convex faces that are the first to contact the mold wall. The AS-2C114.3 (2 cavity, 900 bph, 114.3 mm wide-neck) produces wide-neck cosmetic jars for face cream, serum, and premium skincare in bottle profiles that cannot be produced on standard wide-neck machines.<\/div>\n<\/div>\n
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\ud83c\udf81 Gift & Luxury Packaging<\/h3>\n<\/div>\n
Seasonal, limited-edition, and luxury gift packaging in non-standard bottle geometries \u2014 square-shouldered spirits, sculptural oil cruets, geometric candle fragrance containers \u2014 where the bottle itself is a marketing asset and dimensional consistency across a production run is critical for brand integrity. The single-cavity AS-1C114.3 (500 bph) serves ultra-premium and short-run luxury packaging that justifies single-cavity precision economics.<\/div>\n<\/div>\n
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\ud83e\udd52 Specialty Food & Artisan Condiment Bottles<\/h3>\n<\/div>\n
Artisan honey, truffle oil, balsamic vinegar, and specialty condiment brands use custom bottle silhouettes as brand identity \u2014 hexagonal honey jars, teardrop oil cruets, and faceted vinegar bottles. PET\/PETG clarity showcases the distinctive colour and viscosity of premium food products. The AS-2C76 and AS-4C76 cover 300\u2013700 ml specialty food formats at throughputs matching artisan brand production volumes.<\/div>\n<\/div>\n
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\ud83c\udfed Collectible & Miniature Bottles<\/h3>\n<\/div>\n
Travel-size, miniature collectible, and sample bottles in 30\u2013150 ml in highly decorative non-standard geometries \u2014 spirits miniatures, perfume samples, cosmetic travel sets. The AS-4C38 at 4,000 bph provides industrial-scale output for miniature bottle formats that must maintain intricate embossed surface detail and precise neck geometry for miniature screw-cap or stopper closure systems across all four cavities simultaneously.<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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7. Our Machines vs. European Brand Platforms \u2014 Objective Comparison<\/h2>\n
Disclaimer:<\/strong> The brand names Sidel, Krones, SMI, and Sipa are referenced solely to assist buyers in comparing technical specifications and making informed sourcing decisions. We are an independent manufacturer with no affiliation with or endorsement from any of these brands. We do not manufacture or sell their products. This comparison does not constitute intellectual property infringement of any kind.<\/div>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n
Comparison Item<\/th>\nSidel SBO Series<\/th>\nKrones Contiform<\/th>\nSMI Smiflexi<\/th>\nSipa SFR EVO<\/th>\nOur Series<\/th>\n<\/tr>\n<\/thead>\n
Origin<\/td>\nFrance<\/td>\nGermany<\/td>\nItaly<\/td>\nItaly<\/td>\nAsia<\/td>\n<\/tr>\n
Irregular Shape Focus<\/td>\nBeverage-primary<\/td>\nBeverage-primary<\/td>\nGeneral purpose<\/td>\nGeneral purpose<\/td>\nDedicated AS series<\/td>\n<\/tr>\n
AS-Grade on ALL Models<\/td>\nPremium upgrade<\/td>\nPremium upgrade<\/td>\nStandard only<\/td>\nStandard only<\/td>\nYes \u2014 all 5 models<\/td>\n<\/tr>\n
PETG Processing<\/td>\nSelected models<\/td>\nSelected models<\/td>\nLimited<\/td>\nLimited<\/td>\nAll 5 models \u2014 dual-mode<\/td>\n<\/tr>\n
Min. Neck Diameter<\/td>\n~18 mm (selected)<\/td>\n~20 mm (selected)<\/td>\n~28 mm<\/td>\n~28 mm<\/td>\n38 mm (AS-4C38)<\/td>\n<\/tr>\n
Approx. Entry CapEx (1-cav.)<\/td>\nUSD 120K \u2013 200K<\/td>\nUSD 110K \u2013 180K<\/td>\nUSD 90K \u2013 160K<\/td>\nUSD 100K \u2013 170K<\/td>\nSignificantly lower \u2014 direct<\/td>\n<\/tr>\n
Spare Parts Lead Time<\/td>\n4\u201312 weeks<\/td>\n4\u201310 weeks<\/td>\n4\u201310 weeks<\/td>\n4\u201310 weeks<\/td>\n3\u20137 days (stocked)<\/td>\n<\/tr>\n
CE Certification<\/td>\nYes<\/td>\nYes<\/td>\nYes<\/td>\nYes<\/td>\nYes<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

CapEx figures are indicative market estimates. Our pricing is provided by confirmed quotation only.<\/em><\/p>\n<\/div>\n

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8. Model Selection Guide<\/h2>\n
\n\n\n\n\n\n\n\n\n\n
Your Requirement<\/th>\nRecommended Model<\/th>\n<\/tr>\n<\/thead>\n
Premium \/ bespoke irregular bottle, single-cavity, max precision<\/td>\nAS-1C114.3 (1 cavity, 500 bph, 114.3 mm neck)<\/td>\n<\/tr>\n
Spirits \/ cosmetic irregular bottle, 2 cavity, up to 700 ml, 76 mm<\/td>\nAS-2C76 (2 cavity, 900 bph)<\/td>\n<\/tr>\n
Wide-mouth decorative jar, 2 cavity, up to 350 ml, 114.3 mm<\/td>\nAS-2C114.3 (2 cavity, 900 bph)<\/td>\n<\/tr>\n
Miniature \/ vial \/ sample bottle, 4 cavity, up to 150 ml, 38 mm<\/td>\nAS-4C38 (4 cavity, 4,000 bph)<\/td>\n<\/tr>\n
High-volume spirits \/ specialty food, 4 cavity, up to 700 ml, 76 mm<\/td>\nAS-4C76 (4 cavity, 2,000 bph)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

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9. Frequently Asked Questions<\/h2>\n
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Q1: Why does irregular bottle production require AS-grade precision instead of standard servo?<\/strong><\/div>\n
In a cylindrical mold, radial resistance is uniform around the cross-section \u2014 all faces seat on the mold wall simultaneously. In a non-cylindrical mold (hexagonal, oval, faceted), radial resistance is differential \u2014 flat faces seat earlier than curved faces, and convex faces seat last. If high-pressure blowing is applied before all faces have seated, the last-seating faces receive excessive stress, causing visible stress marks or unacceptable wall thinning. The AS-grade servo’s \u00b10.03 mm stretch-rod accuracy and sub-millisecond blow-timing control minimise this differential seating time gap \u2014 enabling wall uniformity on complex geometries that fails consistently on standard servo machines.<\/div>\n<\/div>\n
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Q2: What is the difference between PET and PETG for decorative and premium bottles?<\/strong><\/div>\n
PET and PETG are both crystal-clear packaging materials, but PETG offers measurably higher surface gloss (approaching glass-like levels), better scratch resistance, and higher impact toughness at equivalent wall weight. PETG also has lower processing shrinkage \u2014 typically 0.2\u20130.4% versus 0.3\u20130.6% for PET \u2014 providing better dimensional accuracy on fine-detail mold geometries including embossed surfaces, sharp shoulder angles, and textured body panels. For premium perfume, spirits, and cosmetic packaging where visual surface quality is a purchase driver, PETG is the preferred material. PET is generally specified where cost and oxygen barrier (slightly better in PET) outweigh the surface-quality advantage.<\/div>\n<\/div>\n
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Q3: What bottle geometries can these machines produce?<\/strong><\/div>\n
The series handles the full range of non-cylindrical specialty bottle geometries that can be produced by stretch blow molding, including: oval and elliptical cross-sections, hexagonal and octagonal profiles, square-cornered and rectangular cross-sections, tapered waist and hourglass profiles, asymmetric shoulder geometries, compound-curve body panels, and embossed surface patterns. The practical limit is stretch-ratio feasibility \u2014 any bottle geometry where the maximum local stretch ratio in the preform exceeds material limits will produce wall thinning or fracture regardless of machine precision. We assess stretch-ratio feasibility for each custom geometry at DFM review stage before mold construction.<\/div>\n<\/div>\n
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Q4: How do I know whether my bottle design is feasible for stretch blow molding?<\/strong><\/div>\n
Submit your 3D bottle drawing (STEP or IGES format) for a DFM (Design for Manufacturability) review. Our engineering team will assess: (1) maximum body-to-neck ratio \u2014 extreme oversizing of the bottle body relative to preform neck may exceed biaxial stretch limits; (2) minimum corner radius on sharp features \u2014 very small corner radii (below 3\u20135 mm) concentrate wall thinning; (3) undercut geometry \u2014 true undercuts cannot be released from a two-part blow mold without side-action complexity; (4) surface detail depth \u2014 deep embossing requires careful preform material positioning. DFM review is at no charge and typically returns within 3\u20135 working days.<\/div>\n<\/div>\n
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Q5: Can PET\/PETG irregular bottles replace glass in spirits and premium food applications?<\/strong><\/div>\n
Yes, in most packaging and distribution contexts. Stretch-blown PET and PETG deliver glass-level clarity at 60\u201370% lower weight, with complete elimination of breakage risk. Key considerations: spirits with high alcohol content (above 50% ABV \/ 100 proof) may experience slight flavour migration through PET over extended storage \u2014 PETG provides better resistance and a barrier coating option is available for high-ABV formats. Carbonated spirits require a CO\u00b2 barrier layer. For premium still spirits, cordials, liqueurs, and all food applications, standard PET\/PETG is fully suitable for shelf lives of 24+ months. We can advise on material and barrier options for specific formulations at enquiry stage.<\/div>\n<\/div>\n
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Q6: What surface finish can the molds achieve on decorative bottles?<\/strong><\/div>\n
Decorative blow molds for this series are machined to Ra \u2264 0.4 \u03bcm surface finish on all visible bottle surfaces \u2014 the standard required for glass-substitute premium packaging. This finish transfers directly to the bottle surface through the blow molding process, producing a high-gloss appearance in PETG and a premium-clarity finish in PET. Textured surface panels (sand-blast, bead-blast, or machined pattern textures) can be applied to specific mold zones to create contrast between gloss and matte surface areas on the same bottle \u2014 a popular technique in premium spirits and fragrance packaging.<\/div>\n<\/div>\n
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Q7: What is the lead time for an irregular-geometry blow mold?<\/strong><\/div>\n
Complex irregular-geometry blow molds require 40\u201355 working days from approved 3D drawing \u2014 longer than standard cylindrical bottle molds (25\u201335 days) due to 5-axis CNC machining of complex cavity surfaces, multi-region conformal cooling channel design, and extended surface polishing time to achieve Ra \u2264 0.4 \u03bcm on non-planar surfaces. DFM review (3\u20135 days) precedes mold construction and is included at no charge. First-article inspection samples with dimensional measurement reports are provided before production molds are shipped.<\/div>\n<\/div>\n
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Q8: How does the machine handle multiple different irregular bottle SKUs?<\/strong><\/div>\n
Each bottle SKU (different geometry, volume, or neck finish) is produced with its own blow mold and stored as a separate PLC recipe covering oven zone powers, transfer timing, blow pressure, and cooling duration. Changing between SKUs requires mold substitution (35\u201350 minutes) and recipe selection on the HMI. All format-specific parameters are restored automatically from the stored recipe \u2014 no manual oven or pressure adjustments. Up to 50 recipes are stored on-board, covering the full range of SKUs typical of a multi-format specialty packaging operation.<\/div>\n<\/div>\n
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Q9: What certifications do the machines carry?<\/strong><\/div>\n
All machines are CE-marked and carry multiple national utility model patents. ECM verification certificates for electrical components are available. Country-specific certifications (UL, EAC, INMETRO, etc.) can be supported subject to additional testing. For food-contact and cosmetic applications, documentation confirming no-hydraulic-fluid servo-electric architecture is provided. PET and PETG material compliance documentation (FDA, EU Regulation 10\/2011) is obtainable from resin suppliers for specific grades used in preform production.<\/div>\n<\/div>\n
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Q10: What is the production lead time from order to delivery?<\/strong><\/div>\n
Standard AS-series machines are produced within 45\u201360 working days from deposit receipt. Irregular-geometry blow molds are delivered in 40\u201355 working days from approved 3D drawing \u2014 this lead time runs concurrently with machine production for projects where the bottle design is finalised at order placement. Preform injection molds for custom irregular preform profiles take 45\u201360 working days. Factory acceptance testing with bottle samples and surface measurement reports is conducted before shipment. On-site commissioning typically requires 3\u20135 working days per machine.<\/div>\n<\/div>\n<\/div>\n

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Explore our full range of two-step and one-step blow molding machines<\/strong> for standard and specialty packaging:<\/p>\n

\u25ba Browse All Blow Molding Machines<\/a>
\n\u2709 Request a Free Quotation<\/a><\/p>\n<\/div>\n

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10. Work with a Specialist Manufacturer<\/h2>\n

With over two decades of dedicated experience in blow molding machine design, manufacturing, and specialty mold fabrication, we supply AS-grade PET and PETG irregularly shaped bottle blow molding machines<\/strong> to perfume houses, spirits brands, cosmetic producers, specialty food companies, and premium packaging converters across more than 20 countries. Our production facility operates dedicated 5-axis CNC machining, precision decorative mold fabrication, machine assembly, and quality-control departments. Our engineering team provides DFM feasibility review for every custom bottle geometry at no charge before mold construction begins.<\/p>\n

Whether you are launching a new premium bottle silhouette, transitioning an existing glass packaging line to PET or PETG, adding an irregular-geometry capability to an existing blow molding operation, or replacing an ageing European machine on a specialist decorative packaging line, our technical team will provide a no-obligation specification review, stretch-ratio feasibility assessment, and delivered-cost comparison within 48 hours of enquiry.<\/p>\n

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Ready to Specify Your Irregularly Shaped Bottle Blow Molding Machine?<\/h3>\n
Send us your 3D bottle drawing or sample, material preference (PET or PETG), target daily output, and neck finish specification \u2014 our engineering team will assess feasibility, recommend the optimal AS-grade blow molding machine<\/strong>, and issue a direct quotation.<\/div>\n

\ud83d\udcde Contact Engineering Team<\/a>
\n\ud83d\udd0d View Full Machine Catalogue<\/a><\/p>\n<\/div>\n<\/div>\n

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<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

AS-grade PET & PETG irregularly shaped bottle blow molding machines. 5 models, 1\u20134 cavities, 38\u2013114.3 mm neck, 500\u20134,000 bph. Perfume, spirits, decorative & craft packaging. CE certified.<\/p>","protected":false},"featured_media":613,"comment_status":"open","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_brand":[],"product_cat":[19],"product_tag":[],"class_list":["post-614","product","type-product","status-publish","has-post-thumbnail","product_cat-blow-molding-machine","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/injectionstretchblowmolding.com\/vi\/wp-json\/wp\/v2\/product\/614","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/injectionstretchblowmolding.com\/vi\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/injectionstretchblowmolding.com\/vi\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/injectionstretchblowmolding.com\/vi\/wp-json\/wp\/v2\/comments?post=614"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/injectionstretchblowmolding.com\/vi\/wp-json\/wp\/v2\/media\/613"}],"wp:attachment":[{"href":"https:\/\/injectionstretchblowmolding.com\/vi\/wp-json\/wp\/v2\/media?parent=614"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/injectionstretchblowmolding.com\/vi\/wp-json\/wp\/v2\/product_brand?post=614"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/injectionstretchblowmolding.com\/vi\/wp-json\/wp\/v2\/product_cat?post=614"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/injectionstretchblowmolding.com\/vi\/wp-json\/wp\/v2\/product_tag?post=614"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}