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Wall thickness in manufacturing plastic moulds

update:08-11-2019
abstract:

What is the wall thickness in the manufacture of plasti […]

What is the wall thickness in the manufacture of plastic moulds?

The thickness of the wall depends on the external force the product needs to bear, whether it is supported by other parts, the number of columns to be supported, the number of extensions, and the plastic material chosen. The wall thickness design of general thermoplastics should be limited to 4mm. From an economic point of view, excessive product design not only increases material costs, extends production cycles (cooling time), and increases production costs. From a product design point of view, an excessively thick product increases the likelihood of creating voids (pores), greatly reducing the rigidity and strength of the product.

The most ideal wall thickness distribution is undoubtedly that the cut surface is uniform in any place, but it is inevitable that the wall thickness will change in order to meet the functional requirements. In this case, the transition from thick rubber to thin rubber should be as smooth as possible. Too sudden wall thickness transitions can result in dimensional instability and surface problems due to different cooling rates and turbulence.

Due to the cumbersome production of plastic mold processing manufacturers and workshops, and the fact that many of them are single-piece and small-sized, it is inevitable for the formulation and management of plastic mold production quotas, plus the production methods of factories and workshops. The nature of equipment and technology is not the same.

Therefore, in the processing of plastic mold quotas, it is necessary to find out appropriate ways to determine reasonable working hours quota and mould wall thickness and other parameters in accordance with the actual environment of the factory and the workshop to improve labor productivity.