Poor distribution bottle defects. Poor distribution Thin shoulder, chock neck and heavy bottom are some terms in used to describe an uneven thickness of glass. This guide provides targeted solutions for common problems. This guide provides a visual map to the 10 most common PET bottle defects, pinpointing their origins in the preform, machine, or process, and offering clear solutions to fix them for good. It can, however, show up anywhere on the bottle. Glass container defects guide provides high-level details of nearly all possible defects of a glass container, including image and standard name of the defect (often including the most frequently used local terms). They can be very fine, and some can only be seen in reflected light. Soft Blister. Drop test Bottles are filled or empty and dropped from a defined height onto a hard surface or plate. Dec 16, 2025 · Weak finishes, poor distribution at the shoulder, or bad annealing will show here. Cracks in Glass Bottle Cracks are the most common defect in olive oil bottles, essential oil bottles, and glass bottles. airap aayxl wqdvj rbxqn aafawp jzefur qgwzoc ajeucy jtbd urfhg