30mm 3025 PET Preform For Mineral Water & Beverage Bottles – 13g to 55g | 100% Virgin Food-Grade PET

Product Introduction

This product is the 30mm 3025 standard PET preform, made from 100% virgin food-grade PET, with weights ranging from 13g to 55g. It is suitable for blow molding 330ml to 2L mineral water, purified water, juice, and carbonated beverage bottles. The preform features uniform wall thickness, high clarity, and supports lightweight design to reduce material costs. We offer customization including color, weight, UV protection, and hot-fill, and are certified with FDA, EU, ISO 9001, and ISO 22000.

Key Selling Points (Why Choose Jinting 30mm 3025 Preform)

Product Detail Display

1. Neck Thread – Precision 30mm 3025 Standard (Expanded)

1.1 Thread Geometry Parameters

1.2 Sealing Structure Design

• Primary sealing surface: A 0.5mm deep annular groove under the support ring forms an interference fit with the cap's inner plug (0.3–0.4mm compression), ensuring no leakage even when inverted.

• Secondary sealing: Contact between the top of the support ring and the inner top of the cap creates a second seal against gas ingress.

• Tamper-evident band retention: A raised ring at the thread tail engages the cap's tamper-evident band, producing an audible click upon opening and providing clear tamper indication.

• Seal testing: Random samples assembled with standard caps are submerged in water under 0.4 MPa air pressure – no bubbles; also tested inverted for 24 hours – no leakage.

1.3 Support Ring Specifications

• Diameter: 30.0 mm ±0.10 mm

• Thickness: 2.0 mm ±0.05 mm

• Shape: Full-circumference flange with R0.5mm fillet transition to bottle body, eliminating stress concentration

• Function: Serves as clamping point in blow molding machines, ensuring stable preform rotation during heating; also limits cap tightening depth to prevent thread damage.

1.4 Material & Mechanical Properties

• Material: Same as preform – 100% virgin food-grade PET

• Crystallinity control: Neck area is rapidly cooled to <15% crystallinity, retaining toughness to prevent cracking during capping

• Torque resistance: Assembly with standard cap yields opening torque 1.0–1.5 N·m, sealing torque 0.8–1.2 N·m (tested per ASTM D3198)

• Compressive strength: Preform neck withstands 60 kg axial load (simulating stacking conditions) without deformation

1.5 Compatibility

• Compatible cap types:

  • Standard 30mm water caps (flat or graduated)

  • Sports caps (push-pull or flip-top)

  • Smart caps (for water coolers, requires specialized mold)

  • Tamper-evident band caps

• Major brand compatibility: Tested and fully compatible with 30mm caps from Bericap, Closure Systems International (CSI), Alpla, Zijiang, and others.

• Blow molding machine compatibility: Support ring diameter 30.0mm fits clamping systems of Sidel, Krones, Sipa, and other mainstream blow molders.

1.6 Quality Control

• Dimensional inspection: Every 2 hours, key dimensions (OD, ID, pitch) are checked using profile projectors or thread gauges.

• Capping torque test: In-line automatic capping simulator samples 20 pcs per batch to record torque curves and ensure consistency.

• Leak test: Random preforms assembled with caps are placed in a vacuum chamber (-60 kPa) for 30 seconds – no bubbles allowed.

• All test data is traceable, and quality reports are available upon request.

Detailed Technical Specifications

Weight ↔ Recommended Bottle Capacity Reference (Blowing Guide)

Production Line & Manufacturing Capability

Production Equipment Overview

Jinting factory is equipped with 120+ international brand injection molding machines, including:

• Husky HyPET series: 300-500 ton clamping force, all-electric high-speed machines, designed specifically for PET preforms, short cycle time, low energy consumption.

• KraussMaffei: Hydraulic/electric hybrid machines, suitable for high-cavity molds.

• Automatic robots: Work with injection machines to take out, cool, and convey preforms.

Multi-cavity mold advantage: For 13g-55g preforms, we use 72, 96, or even 144 cavity molds, with daily output per machine exceeding 500,000 pieces, ensuring fast delivery for large orders.

Molds & Cavity Count

• In-house mold workshop: Can independently develop 8 to 144 cavity preform molds.

• Hot runner system: Mold-Masters / Yudo valve gate hot runners, precise temperature control.

• Quick mold change system: Magnetic platen, mold change time ≤15 minutes.

Production Process (From Material to Finished Preform)

Quality Control System

• Incoming inspection: Test IV, AA, moisture content for each batch of PET material.

• In-process control: Every 2 hours, sample check preform weight, wall thickness, neck dimensions, clarity.

• Blow verification: Daily samples blown on blow molder to test bottle verticality, capacity, pressure resistance, drop performance.

• Traceability system: Each batch of preforms includes production date, machine number, mold number, traceable to raw material batch.

Capacity & Delivery Capability

Customization Capabilities (OEM/ODM)

• Color customization: Any Pantone color, including pearlescent, matte, fluorescent effects. Color difference ΔE < 0.5.

• Weight customization: From 9g to 80g, precisely adjust gram weight according to bottle design, tolerance ±0.5g.

• Eco-friendly formula: Can add 30% post-consumer recycled PET (R-PET), balancing environmental protection and cost.

• UV protection: Add UV absorber to protect light-sensitive beverages (juice, dairy drinks).

• High barrier technology: Oxygen/CO2 barrier performance increased by 3 times, extends shelf life.

• Brand marking: Brand logo/text can be engraved on preform bottom or side wall (raised or recessed).

• Hot-fill dedicated: Heat-set preforms available, withstand up to 85°C.

• Special neck: Custom non-standard necks available (e.g., 30mm thread with tamper-evident band structure).

Company Introduction

Taizhou Huangyan Jinting Plastic Mold Co., Ltd. is a professional PET preform manufacturer based in Huangyan District, Taizhou City, Zhejiang Province — widely recognized as China's "Hometown of Plastics" and a global hub for plastic product manufacturing. With over 25 years of specialized experience in PET preform development and production, we serve water plants, beverage brands, and packaging buyers worldwide.

Our Business – Integrated Supply Solution

We not only produce preforms, but also provide auxiliary products and closed-loop testing capability, ensuring seamless connection from preform to finished bottle.

Company Facts

Our Mission

"Specializing in manufacturing PET preforms and leading the future of the industry."

Frequently Asked Questions (FAQ)

1. What can you customize?
Color (any Pantone), weight (9g-800g), UV protection, hot-fill, high barrier, logo engraving, etc.

2. How is the transparency of the preform guaranteed?
We use high-clarity food-grade PET material, combined with precision injection molding and rapid cooling, ensuring preform haze <1.5% and crystal-clear bottles.

3. Can I mix different weights in one MOQ?
Yes. Within the MOQ of 50,000 pcs, 2-3 weights can be mixed, specific ratio negotiable.

4. Can I get free samples?
Free samples (5-10 pcs) for standard clear preforms, customer pays freight. Custom colors/weights require mold sharing fee, refundable upon formal order.

5. What is the lead time?
Stock clear: 7-12 days; custom colors: 20-25 days; new mold: 30-35 days.

6. Do you have FDA/EU test reports?
Yes, third-party test reports and declarations of conformity available.

7. Do you support small trial orders?
Yes. New customers can place a trial order of 30,000 pcs (within standard weight range) to help start projects quickly.

8. Can you provide 3D drawings or 2D engineering drawings?
Yes. After order or sample request, CAD/STEP format drawings can be provided.

Jinting Preform – Specializing in PET preforms, leading the future of the industry.