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US 2023/0398770 A1Published application
Exterior film of building for protecting glass
AssigneeStek Co., Ltd.
InventorsChangsuk Lee, Inhwan Oh, Subin Park, Jinwoo Choi
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Abstract
The present invention relates to an exterior film of a building for protecting glass, which represents excellent weather resistance, impact resistance, and scratch resistance by a base layer combined with thermoplastic polyurethane and a functional coating layer, has self-healing ability, and can improve durability of glass by effectively blocking heat derived from ultraviolet and infrared rays.
Claims10
An exterior film of a building for protecting glass, the exterior film comprising:
- a functional coating layer including a urethane-based material;
- a base layer disposed under the functional coating layer and combined with thermoplastic polyurethane;
- and
- a second adhesive layer disposed under the base layer and including an acrylic copolymer, a curing agent, a solvent, and a UV blocker,
- wherein the base layer includes:
- a TPU layer including thermoplastic polyurethane;
- a first adhesive layer disposed under the TPU layer and including a urethane resin, a curing agent, carbon, a metal oxide, and a UV blocker;
- and
- a PET layer disposed under the first adhesive layer and including metal-treated polyethylene terephthalate, and
- wherein the functional coating layer has a function of self-healing or preventing scratches generated on a surface of the exterior film.
7 more elements
Dependencies are inferred from the claim text.