In PET bottle manufacturing, even minor errors can lead to major production losses. Common PET bottle defects such as pearlescence, flash, and uneven wall thickness not only affect quality but also increase rejection rates. Effective stretch blow moulding troubleshooting starts with one critical factor—mould precision. At Awanti Polymoulds , we know that mould efficiency is the silent engine behind every successful production run. When your equipment is optimised, material saving in blow moulding becomes a natural outcome rather than a constant struggle. 7 Common PET Bottle Defects & The Mould Quality Connection Even the most advanced blow moulding machines can’t compensate for a mediocre mould. Here is how mould precision directly impacts the most common PET bottle defects . 1. Pearlescence (Over-stretching) This "whitish" appearance occurs when the PET material is stretched beyond its natural limit. While often a temperature issue, a poorly designed m...
In the high-speed world of beverage bottling, where production lines move at speeds of up to 80,000 bottles per hour, there is no room for error. A deviation as small as a human hair in your blow mould can lead to a catastrophic failure on the filling line. At Awanti Polymoulds , we believe that excellence in the beverage industry isn’t just about the design of the bottle; it’s about the science of precision. What Are Mould Tolerances? In engineering, "tolerance" refers to the permissible limit of variation in a physical dimension. In PET blow moulding, this means how closely the finished mould matches the exact CAD (Computer-Aided Design) specifications. When we talk about precision at Awanti, we are measuring in microns . Whether it is the neck finish, the base clearance, or the seam lines, every millimetre counts. Why Precision is the "Insurance Policy" for Your Production Line 1. Preventing the Nightmare of Leaks and Micro-Cracks The beverage industry, particu...