1.5L PET Water Bottle Preform
1.5L PET Water Bottle Preform
This 1.5L PET preform is engineered for high-speed stretch blow molding (SBM) of still water, sparkling water, and functional beverage containers. Produced with 100% virgin PET resin, it delivers high optical clarity, low acetaldehyde (AA) levels, and uniform wall thickness to maintain taste neutrality and structural integrity under high line-pressure filling. Optimized stretch ratios prevent stress whitening, wall thinning, and burst failures during high-speed blowing.
Key Product Features
Intrinsic Viscosity (IV) Control: Resin IV is maintained at 0.80 ± 0.02 dL/g to prevent drop-impact fracturing in 1.5L lightweight formats.
Low Acetaldehyde (AA) Content: Processed under strict dehumidifying drying (<-40°C dew point) and low-shear screw injection, keeping AA content below 1.5 ppm to avoid taste alteration in pure water.
Gate Quality Control: Valve-gated hot runner systems keep gate nub height within <= 0.5 mm, eliminating gate crystallization and preventing puncture defects during axial stretching.
Thermal Profile Stability: Optimized longitudinal body taper ensures even infrared heat absorption inside reheat blow molders, minimizing cycle times.
Technical Specifications
|
Parameter |
Specification |
Testing / Standard |
|
Target Container Volume |
1.5 Liters (1500 ml) |
ISO 8106 |
|
Material |
100% Virgin PET Packaging Grade Resin |
Food Contact Compliant (FDA 21 CFR / EU 10/2011) |
|
Intrinsic Viscosity (IV) |
0.80 ± 0.02 dL/g |
ASTM D4603 |
|
Acetaldehyde (AA) Content |
<= 1.5 ppm |
Gas Chromatography (Headspace) |
|
Moisture Content (Pre-Injection) |
<= 30 ppm |
Karl Fischer Titration |
|
Concentricity / Eccentricity |
<= 0.12 mm |
Optical Coordinate Measuring Machine (CMM) |
|
Clarity / Transmission |
Transmittance >= 88%, Haze <= 1.5% |
ASTM D1003 |
Available Configurations or Options
Neck Finishes & Weight Matrix
30/25 Lightweight Neck (1-Start Thread):
28.0g: Ultra-lightweight profile for regional still water packaging with short logistics radius.
31.0g: Standard profile for high-speed automated palletizing and long-distance transport.
29/25 Short Neck (Water Standard):
29.5g / 32.0g: High-rigidity neck option compatible with standard closures.
PCO 1881 / PCO 1810 (Carbonated / Nitrogen-Dosed Water):
35.0g – 38.0g: Reinforced sidewall profile designed to withstand 2.5 - 4.0 bar internal carbonation pressure.
Customization Options
Coloration: Crystal Clear, Sky Blue, Arctic Blue, Light Amber, or custom UV-blocking masterbatch (290-390 nm spectrum filtration).
PCR Blends: Available with up to 100% rPET (food-grade recycled PET) using EFSA/FDA-cleared pellets with adjusted injection pressure profiles.
Applications
Still Natural Mineral Water & Spring Water: Low-AA formulation prevents off-flavor generation in unflavored waters.
Carbonated & Sparkling Water: Heavy-wall variants (35g+) provide the hoop strength needed to resist creep deformation under internal pressure.
Nitrogen-Dosed Non-Carbonated Drinks: Resists side-wall collapse during high-speed stacking.
Edible Liquids & Light Juices: Cold-fill applications requiring high transparency and shatter resistance.
Product Selection Considerations
Blowing Equipment Compatibility: Compatible with rotary blow molding systems (e.g., Krones, Sidel, KHS, Sacmi) and linear blow molders (e.g., Maiwei, Tech-Long).
Axial & Radial Stretch Ratios: Designed for optimal axial stretch ratios (2.8 - 3.2) and hoop stretch ratios (4.2 - 4.6) to achieve uniform top-load capacity (> 220 N).
Climatic & Transport Requirements: Select 31g+ options over ultra-lightweight 28g variants when shipping across tropical regions or rough terrain to prevent bottle buckling.
Quality Inspection And Testing
Every production batch undergoes automated inline and laboratory sampling:
Dimensional Verification: 100% neck thread measurement using automated optical gauging.
Polarized Light Stress Analysis: Cross-polarized light inspection to ensure zero internal stress concentration or flow lines.
Wall Thickness Distribution: Magnetic hall-effect sensing across top, middle, and bottom preform zones.
Drop & Burst Testing: Sample preforms blown into 1.5L bottles undergo top-load testing (> 220 N requirement) and 1.8-meter drop tests at 4°C.
Customization And Supply Scope
Tooling & Mold Modifications: Mold cavity design and rapid prototyping available for custom neck finish dimensions or weight adjustments.
Packaging & Protection: Packed in gaylord boxes with anti-static food-grade PE liner bags (12,000 - 15,000 pcs/box depending on weight).
Production Capacity: Multi-cavity Husky and Netstal injection lines delivering over 1.2 million units daily.
Logistics Support: Ocean freight packing with moisture-proof desiccant, heat-treated ISPM-15 wooden pallets, and full container load (FCL) optimization.
FAQ
Q: What neck finish is recommended for a 1.5L still water bottle to minimize resin cost?
A: The 30/25 neck finish at 28.0g or 31.0g offers the lowest material weight while maintaining sufficient thread engagement and top-load strength for standard bottling lines.
Q: Can this preform run on older linear blow molding machines?
A: Yes. The body taper and wall uniformity permit broad heating windows on both rotary high-speed systems and standard linear blow molders.
Q: How do you guarantee the preforms won't alter the water's taste?
A: Raw PET resin is dried below 30 ppm moisture before molding, and injection zone temperatures are controlled to limit acetaldehyde formation below 1.5 ppm.
Q: Do you offer rPET (recycled PET) options for European market compliance?
A: Yes. We supply blends up to 100% food-grade rPET. We adjust cycle times and injection pressures to match pure virgin PET performance metrics.
Q: What is the lead time for standard transparent 30/25 1.5L preforms?
A: Standard clear preforms ship within 10 - 14 days for FCL orders. Custom colors or non-standard weights require 20 - 25 days.
RFQ Call to Action
Request a Technical Quotation & Sample Pack
Send your production requirements to receive custom factory pricing, technical drawings, and a test sample package for your blow molding trials:
Neck Finish & Thread Standard (e.g., 30/25, 29/25, PCO 1881)
Target Preform Weight (e.g., 28g, 31g, 35g)
Blowing Equipment Model & Speed (BPH)
Estimated Annual / Order Volume
Destination Port / Delivery Terms (FOB, CIF, DDP)
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