Articles
Technical guides and articles on PET preforms and bottles — selection, production and quality control
PET Bottle Quality Does Not Depend on rPET Content Alone
Does a higher percentage of rPET automatically mean better or more consistent material quality? A recent study of commercial PET beverage bottles shows that the answer is far more complex than a single percentage on the label. Feedstock purity, processing history, packaging components, and contamination control can all significantly influence the chemical profile of recycled PET.
What Is a PET Preform Neck Finish?
A PET preform neck is more than its nominal diameter: the neck finish defines how the preform, closure and packaging line work together. This guide compares PCO 1810, 29/25 and 3-start in KNK’s portfolio and explains Short Neck vs Normal Neck for industrial buyers.
From PET Resin to Bottle: A Professional Guide to PET Preform Production, Quality Control, and Common Defects
This article explains the PET preform production process from resin preparation and injection molding to quality inspection and bottle manufacturing. It also reviews common preform defects, quality-control criteria, mold performance, light weighting, and the key factors industrial buyers should evaluate when selecting a reliable PET preform supplier.
How to Choose the Right PET Preform for Mineral Water, Soft Drinks, Doogh, Milk, and Juice
Choosing the right PET preform depends on the beverage type, bottle size, neck finish, weight, filling conditions, and production-line requirements. This guide explains suitable PET preform options for mineral water, soft drinks, doogh, milk, and juice, including 28, 30, and 38 mm applications.
PET Preforms: A Comprehensive Guide to Selection
PET preforms are essential components in the production of plastic bottles for mineral water, carbonated beverages, dairy products, and fruit juices. Selecting the right PET preform requires careful consideration of neck diameter, weight, bottle capacity, closure compatibility, and production line specifications.