In the world of PET packaging, preform neck sizes play a critical role in determining the functionality and compatibility of bottles for beverages, cosmetics, pharmaceuticals, and more. As a leading PET preform mold manufacturer, APEX specializes in delivering precision-engineered solutions tailored to global industry standards. In this article, we explore the most widely used PET preform neck sizes and highlight how APEX’s expertise ensures high-quality, customizable molds for diverse applications.

Popular PET Preform Neck Sizes

PET preform neck diameters (or "finish sizes") vary depending on bottle applications. Below are the most common standards:

1. PCO 1881 (28mm)

   • Applications: Carbonated soft drinks (CSD), sparkling water.

   • Features: A 28mm neck with a threaded design optimized for pressure resistance. Dominates the CSD market.

2. PCO 1810 (26mm)

   • Applications: Still water, juices, and non-carbonated beverages.

   • Features: Slightly narrower than PCO 1881, reducing material usage while maintaining performance.

3. BPF (British Plastics Federation) Thread

   • Applications: Food, sauces, and household chemicals.

   • Features: A 28mm neck with a unique thread profile popular in European markets.

4. 38mm Neck

   • Applications: Wide-mouth jars for spreads, nuts, or dairy products.

   • Features: Larger diameter for easy filling and consumer access.

5. SP400 (33mm)

   • Applications: Edible oils, detergents, and industrial liquids.

   • Features: Robust design for high-viscosity products and leak-proof sealing.

Why Choose APEX for PET Preform Molds?

As a trusted PET preform mold factory, APEX combines cutting-edge technology with decades of experience to serve brands worldwide. Here’s what sets us apart:

1. Global Standards Compliance
   Our molds adhere to international neck size specifications (e.g., PCO, BPF) to ensure compatibility with filling lines and closures.

2. Customization Capabilities
   Need a unique neck finish? APEX designs bespoke molds for specialized applications, from lightweighting to ergonomic shapes.

3. High-Precision Manufacturing
   Advanced CNC machining and hot runner systems guarantee consistent wall thickness, reduced cycle times, and minimal material waste.

4. Durability & Maintenance
   Molds are crafted from premium steel alloys, extending lifespan even under high-volume production.

5. Sustainability Focus
   We optimize designs to support recycled PET (rPET) usage, aligning with eco-friendly packaging trends.

APEX: Your Partner in PET Packaging Innovation

Whether you’re producing water bottles, shampoo containers, or specialty packaging, selecting the right PET preform neck size is crucial. At APEX, we don’t just supply molds—we deliver end-to-end solutions, from prototyping to after-sales support.