28mm PCO1810 PET Preform for Carbonated Soft Drink Bottles – 13g to 55g | CSD-Grade Precision Molding

Product Overview

The 28mm PCO1810 PET Preform is purpose-built for carbonated soft drink (CSD) bottles — where internal pressure retention, burst resistance, and taste neutrality are non-negotiable requirements. PCO (Plastic Closure Only) 1810 is the international standard neck finish for CSD packaging, distinguished by its deeper thread profile and reinforced neck structure compared to standard 1881 finishes. These design features ensure a secure cap seal that prevents CO₂ leakage, keeping your beverage carbonated from the filling line to the consumer's hand.

With a weight range from 13g to 55g, this preform series covers CSD bottle capacities from 300ml single-serve formats to 2.5L family-size bottles, including heavy CSD applications that demand higher burst pressure ratings. Manufactured by Taizhou Huangyan Jinting Plastic Mold Co., Ltd. — a PET preform specialist with over 25 years of experience — every batch undergoes dedicated CSD-specific testing: burst pressure verification, stress crack resistance evaluation, and strict acetaldehyde (AA) level control below internationally accepted limits.

Key Advantages at a Glance ：

• PCO1810 standard neck finish — the global CSD industry standard for reliable carbonation retention
• 16 standard weight options covering 300ml to 2.5L CSD bottles
• Burst pressure tested: ≥12 bar standard, ≥15 bar for heavy CSD grades
• Strict AA level control (below 5 ppm) to protect beverage taste
• Compatible with all standard PCO1810 plastic caps and high-speed CSD filling lines
• Supported by 25+ years of specialized PET preform manufacturing expertise

Manufacturing & Quality Control

Engineered for Carbonation. Built to Hold Pressure. Tested to Deliver Consistency.

1. Raw Material Selection — High-IV Virgin PET for CSD Strength

Carbonated beverages place unique demands on PET preforms. The internal pressure of a carbonated drink — typically 3–4 volumes of CO₂ — creates continuous hoop stress on the bottle wall. To withstand this stress without cracking or excessive deformation over shelf life, the preform must start with resin that has sufficient intrinsic viscosity (IV) and retain that IV through the injection molding process.

We exclusively use 100% virgin food-grade PET resin from world-class petrochemical producers, specified at IV levels of 0.80–0.84 dL/g — the optimal range for CSD applications. Lower IV resin, or resin blended with recycled content, risks stress cracking, burst failure, and carbonation loss, especially in warmer climates or extended storage conditions.

Every incoming resin batch undergoes laboratory verification before production release:

Only after all parameters pass do we release the batch for production. Each resin lot is assigned a unique batch code that follows through the entire production chain — from drying hopper to finished carton — enabling full traceability.

2. Precision Injection Molding — Tuned for PCO1810 Geometry

The PCO1810 neck finish imposes tighter dimensional requirements than standard 1881 designs. The deeper thread profile, the reinforced sealing surface, and the tamper-evident band geometry must all be formed with high precision to ensure a perfect gas-tight seal with PCO1810-compatible caps. Any deviation in neck dimensions can lead to micro-leakage of CO₂, resulting in flat beverages and consumer complaints.

Material Preparation — Protecting IV from the Start:
PET resin is hygroscopic. Before injection molding, the resin must be thoroughly dried to a moisture content below 30 ppm (parts per million) . We operate closed-loop desiccant drying systems with insulated, dehumidified material conveying lines running directly to each injection machine hopper. Drying parameters — temperature, dew point, residence time — are continuously monitored and adjusted per resin lot characteristics. If moisture enters the injection barrel with the PET melt, it triggers hydrolytic degradation — breaking polymer chains and causing IV drop. A drop of just 0.02–0.04 dL/g in IV during processing can significantly reduce burst pressure performance. Our drying protocol minimizes this risk.

The Injection Molding Process — Multi-Stage Precision Control:
Production runs on high-precision injection molding machines equipped with multi-cavity hot-runner molds. The PCO1810 neck's thicker wall sections and deeper thread geometry require carefully optimized process parameters:

Every single preform, immediately upon ejection from the injection mold, passes through an automated optical vision inspection system. Multiple high-resolution cameras with dedicated lighting arrays inspect each preform from multiple angles in real time:

Any preform that falls outside programmed tolerance limits is automatically rejected via high-speed pneumatic ejection into a separate collection bin. The system logs rejection data per individual mold cavity, allowing us to identify developing mold issues and schedule targeted maintenance before the issue affects full batch quality.

4. CSD-Specific Laboratory Testing — Beyond Standard QC

Standard preform QC checks (weight, dimensions, visual) are necessary but insufficient for CSD applications. Carbonated beverages introduce unique stresses, and our in-house laboratory conducts dedicated testing that directly validates CSD performance. Sampling frequency is tied to production volume, typically every 2–4 hours during continuous runs.

Burst Pressure Test (Every Production Batch):
Preform samples are blown into bottles under controlled conditions, filled with water, and pressurized until burst.

Bottles filled with carbonated water are exposed to dilute alkaline solution under controlled temperature. Time to failure is recorded. Our preforms are formulated and processed to maximize stress crack resistance, particularly in the bottle base — the most vulnerable zone.

Acetaldehyde (AA) Content Test:
Preform samples are cryogenically ground and analyzed via gas chromatography (headspace GC method). Acceptance limit: ≤5 ppm — compliant with major international beverage brand specifications. Results are documented per batch and traceable to specific production parameters.

Additional Tests:

• Cavity-by-Cavity Weight Distribution: Inter-cavity variation maintained within ±0.2g (preforms below 30g) and ±0.5g (larger preforms)

• Section Weight Distribution: Preforms cut into 4 sections to verify uniform material distribution along the axis

• Drop Impact Test: CSD-filled bottles dropped from 1.2m and 1.8m onto concrete surface

• Perpendicularity & Gate Quality: Gate area inspected under magnification for crystallization, stringing, or roughness

5. Controlled Environment & Export-Grade Packaging

Preforms that pass all inspections proceed to packaging:

• Cleanroom Handling: Preform counting, bagging, and carton packing performed in a dust-controlled environment

• Sealed PE Liner Bags: Heat-sealed with desiccant moisture indicator cards — prevents humidity absorption during ocean freight

• Reinforced Export Cartons: Corrugated cartons rated for international shipping, dimensions optimized for standard pallet stacking

• Palletization: Stretch-wrapped on export-grade pallets with corner protectors

• Batch Labeling: Every carton labeled with product code, batch number, production date, cavity range, and QC status

The Bottom Line:
Blow-molding success rates consistently exceeding 99%. Reliable carbonation retention throughout shelf life. Fewer filling line stoppages. This is what 25+ years of CSD preform specialization delivers.

28mm PCO1810 Preform — Full Specification Table

Below is our standard 28mm PCO1810 preform weight range with corresponding bottle capacity recommendations. These are engineering reference values based on typical stretch ratios for CSD PET bottles (axial stretch: 2.5–3.5x, hoop stretch: 3.0–4.0x). Actual bottle specifications may vary depending on your specific bottle design. For custom bottle designs, we recommend providing your bottle CAD file (STEP/IGES format) for our engineering team to calculate the optimal preform weight and dimensions.

Custom gram weights, IV specifications, and colors (blue tint, green, amber for UV-sensitive beverages) available on request. We also offer preform design optimization services — send us your bottle drawing for a tailored recommendation.

Company Profile

Taizhou Huangyan Jinting Plastic Mold Co., Ltd.

Rooted in the World's Plastic Manufacturing Hub

We are located in Huangyan District, Taizhou City, Zhejiang Province — a region globally recognized as China's "Hometown of Plastics" and one of the largest and most mature plastic products manufacturing clusters in the world. This industrial ecosystem, developed over decades, provides unique advantages: a deep pool of skilled mold makers and injection molding technicians, proximity to advanced tooling and auxiliary equipment suppliers, a well-established PET resin supply chain, and efficient logistics routes connecting to major deep-water ports (Ningbo, Shanghai) for global export.

We have been part of this ecosystem for over 25 years, evolving from a local mold and plastics workshop into a specialized PET preform manufacturer that supplies water bottlers, CSD brands, and edible oil producers across multiple continents. Our journey of specialization means we have encountered — and solved — virtually every challenge PET preform manufacturing can present, from carbonation retention and stress cracking to lightweighting optimization and custom color development.

What We Do — An Integrated Packaging Supply Model

While many suppliers focus narrowly on a single product category, we offer a vertically integrated packaging solution spanning three interconnected areas:

1. PET Preform Manufacturing — Our Core Expertise

We produce the full standard range of PET preform neck sizes, covering every major beverage and food packaging application:

We operate in-house bottle blowing lines producing finished bottles from 200ml to 5-gallon formats. This vertical integration serves a dual purpose: we can supply finished bottles alongside preforms, offering a one-stop packaging procurement solution; and we blow-test our own preform production under real-world conditions, understanding exactly how our preforms perform and continuously improving product quality.

3. Closures & Handles — Complete Compatibility Guaranteed

We manufacture PE plastic caps engineered to match our preform neck finishes precisely — 28mm PCO1810, 28mm 1881, 30/25mm, 38mm, and others. We also produce ABS injection-molded handles and PE blow-molded handles for large-capacity bottles. By offering preforms, bottles, caps, and handles from a single source, we eliminate the compatibility risks that arise when customers source these components from multiple suppliers.

Company Facts at a Glance

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

This is more than a slogan — it guides our decisions. In a market where many factories diversify across unrelated product lines to chase short-term opportunities, we have chosen to go deep rather than wide. We focus on PET preform technology, invest continuously in process improvement and quality systems, and build long-term partnerships rather than transactional relationships.

Why Partner With Jinting?

Q1: What exactly is the difference between PCO1810 and standard 1881 neck finishes? Which one should I choose?

Both are 28mm neck finishes, but they are designed for different applications:

Q2: How do you ensure your PCO1810 preforms can reliably withstand carbonation pressure?

Pressure resistance is built in from raw material selection through process control: (1) High-IV Resin at 0.80–0.84 dL/g; (2) IV Preservation during molding through thorough drying to below 30 ppm moisture; (3) Every Batch Burst-Tested — ≥12 bar for standard CSD, ≥15 bar for heavy CSD; (4) Stress Crack Resistance Validated through accelerated alkaline testing.

Q3: How do you control acetaldehyde (AA) levels, and why does it matter for CSD?

AA is a natural PET processing byproduct that can migrate into beverages and create off-taste. Our control strategy: select low-AA-generation resin grades; optimize melt temperature and residence time to minimize thermal degradation; test every batch via gas chromatography (headspace GC); maintain AA ≤5 ppm — compliant with major international beverage brand specifications.

Q4: What neck sizes and colors can you customize?

Full standard range: 28mm (1881, PCO1810), 30/25mm, 38mm, 45mm, 48mm, 55mm (snap neck, with or without support ring, short/long screw neck variants), plus custom neck designs based on your cap sample or drawing. Colors: crystal clear, light blue, green, amber (UV protection), milky white — custom masterbatch matching available.

Q5: Can I get free samples for testing?

Yes. Free samples of standard 28mm PCO1810 preforms in stock specifications (clear color, standard weights) are available. Freight costs are collected. This allows you to run blow-molding trials, test cap compatibility, conduct burst pressure and drop tests, and evaluate transparency before committing to an order. For custom specifications, sample terms can be discussed.

Q6: What is the minimum order quantity (MOQ) and standard delivery time?

We offer a complete packaging solution from a single supplier: PET preforms (all standard neck sizes), finished bottles (200ml to 5-gallon), PE caps (matching all neck finishes), and handles (ABS and PE for large bottles). Advantages: guaranteed component compatibility, simplified logistics (one supplier, one set of documents, one point of contact), and consolidated quality assurance with full traceability across all packaging components.

Q8: How should PCO1810 preforms be stored to maintain their quality before use?

If preforms have been exposed to high humidity during storage, they may require re-drying before blow molding (standard PET drying conditions: 160–170°C for 4–6 hours to achieve <30 ppm moisture content).

Recommended Products

Looking for a PCO1810 preform supplier who understands carbonation — from IV control and burst pressure testing to AA management and stress crack resistance? Backed by 25+ years of CSD preform specialization, ISO 9001 and ISO 22000 certifications, and an integrated supply capability covering preforms, bottles, caps, and handles.

Send us your inquiry today for:

• A competitive price quotation within 24 hours

• Free samples to test on your blow-molding and filling lines

• A virtual factory tour video to see our production, lab, and quality systems

• Technical recommendations on preform weight, color, and neck finish for your specific product