It is necessary to calculate in advance and make the mold dimensions larger by that amount!
The shrinkage rate varies depending on the materials used, so it is necessary to calculate in advance and make the dimensions of the mold larger accordingly. The standard shrinkage rate for polyvinyl chloride is 3/1000 to 4/1000, while for polystyrene it is 4/1000 to 5/1000. Standard values for other shrinkage rates are listed in the table at the link below, so please take a look. *For more details, you can view them from the related link. Feel free to contact us for more information.
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There are various molding methods for plastic molding processing, but our company's vacuum forming (vacuum molding) has lower mold costs compared to other molding methods and allows for small lots of a wide variety of products. This enables us to mass-produce plastic containers at a low cost within a quasi-cleanroom factory. Additionally, due to its high versatility, plastic containers such as conductive trays, frozen food containers, cosmetic trays, blister packs, barrier trays, clear cases, and biodegradable plastics are used in various fields.
