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US 2023/0054528 A1Published application
Mold-release film
AssigneeKobayashi & Co., Ltd.
InventorsKeisuke SAKAI, Nanae TANAKA
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AssigneeKobayashi & Co., Ltd.
InventorsKeisuke SAKAI, Nanae TANAKA
Estimating the term…
The objective of the present invention is to provide a mold-release film that docs not contaminate the mold or the formed body. This invention provides a mold-release film comprising a base material layer formed from a thermoplastic resin, and a surface layer formed from a resin composition layered on at least one surface of the base material layer. The mold-release film has a trouser tear strength, conforming to JIS K 7128-1, of 5 N/mm or stronger. The resin composition has a peel strength of 15 mN/30 mm or weaker, as measured at 175° C. in accordance with JIS Z0237. The resin composition has an elongation at break of 70% or greater, as measured at 175° C. in accordance with JIS K 7127.
A release film having a base layer formed of a thermoplastic resin and a surface layer formed of a resin composition laminated on at least one surface of the base layer, wherein the trouser tear strength in accordance with JIS K7128-1 is 5 N/mm or more, the peeling force of the resin composition is 15 mN/30 mm or less when measured at 175° C. according to JIS Z0237, and the breaking point elongation of the resin composition is 70% or more when measured at 175° C. according to JIS K7127.
Dependencies are inferred from the claim text.