Sino offers interchangeable preform moulds for high speed and low cost PET preform molding solution.
PET preform moulds has different interchangeable way: core/cavity interchangeable, weight interchangeable or neck screw interchangeable.Core/cavity interchangeable among different cavity number is the most common and basic way. On the multi-cavity preform mould, it is very important to make sure each cavity inserts should be interchangeable, so when one cavity is broken or damaged, you could replace with spare parts easily.
PET preform moulds has different interchangeable way: core/cavity interchangeable, weight interchangeable or neck screw interchangeable.Core/cavity interchangeable among different cavity number is the most common and basic way. On the multi-cavity preform mould, it is very important to make sure each cavity inserts should be interchangeable, so when one cavity is broken or damaged, you could replace with spare parts easily.
Weight interchangeable is also very common for PET preform molds. If it is weight interchangeable, the weight for different version should be similar. Usually the weight difference should be less than 5 gram for common water bottle preform and 10g for wide mouth preform. The interchangeable way can be only core interchangeable or half mould interchangeable. Half mould interchangeable means you will get 1.5 sets of preform mould with 1 cavity and 2 core side. This is the most popular way for changing weight because it is very convenient for handling.
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If it is neck interchangeable, two version of neck should have the same weight. Otherwise, there will be a parting line in the preform body version for the version which is shorter.No matter for weight or neck interchangeable, the tooling should be strictly controlled; otherwise the interchange effect will not be good.
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