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Patent drawing for Thermoset in-mold finishing film
US 20,190,308,350 A1
Plastics forming US 20,190,308,350 A1 Expired

Thermoset in-mold finishing film

The invention, as currently claimed, is a specific method for making durable, decorated plastic parts. It involves first placing a partially-cured polyurethane film (called a B-stage resin) onto a casting paper or textured plate. This film is then used to create a finished article that is both decorative and protected.

Why it matters: Advances in polyurethane chemistry since 2019 may offer B-stage resins with improved stability, faster curing, or enhanced durability, making this specific in-mold film method more practical.

Status
ExpiredProtection ended and was never renewed
How hard to build
SpecializedPolyurethane chemistry, specialized molds, RIM equipment.

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