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FUNDAMENTALS OF PLASTICS & CAPS

FUNDAMENTALS OF PLASTICS & CAPS

COMPARISON OF COMMON PLASTICS USED IN PACKAGING

NECK FINISH AND CAPS

If you see "52/400" in the neck finish specifications, remember that:

 

1. the upper number means 52mm diameters measured across the inside of the cap's opening

2. the lower number means a 400 thread style.

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A container and its corresponding cap must have matching finishes. For example, a 24/400 bottle will only accept a 24/400 closure.

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