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US 12,441,908 B2Granted
Multilayer paint protection film for vehicle
AssigneeAmte Co., Ltd
InventorNam Hoon Kim
Life of this patent
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Abstract
Proposed is a paint protection film with excellent self-healing ability, stain resistance, and weather resistance. When being applied to vehicles, damage to the painted surface, such as chipping, scratches, and the like occurring in the middle of driving, can be effectively prevented. In addition, even when exposed to the external environment for a long period of time, the transparency of the film can be maintained. Furthermore, discoloration or stains caused by contaminants can be prevented, thereby maintaining aesthetics.
Claims9
A paint protection film comprising:
- a coating layer comprising a polycaprolactone-based polyurethane formed of a coating solution in which first and second compositions are mixed;
- a base layer comprising a polyester-based thermoplastic polyurethane;
- and
- an adhesive layer,
- wherein the first composition has a viscosity in a range of 1 cPs to 10 cPs at a temperature of 25° C. and comprises:
- 75 parts to 185 parts by weight of an ester-based solvent, 10 parts to 80 parts by weight of a ketone-based solvent, and 60 parts to 160 parts by weight of a glycol ester-based solvent, with respect to 100 parts by weight of a polycaprolactone triol,
- the second composition has a viscosity in a range of 40 cPs to 50 cPs at a temperature of 25° C. and comprises:
- 10 parts to 35 parts by weight of an aromatic hydrocarbon-based solvent and 10 parts to 35 parts by weight of an ester-based solvent, with respect to 100 parts by weight of hexamethylene diisocyanate,
- the first composition comprises a non-volatile phase in an amount in a range of 20% to 30% by weight,
- the second composition comprises a non-volatile phase in an amount in a range of 60% to 80% by weight, and
- a weight ratio of the first composition to the second composition is in a range of 2.5:1 to 3.5:1.
8 more elements
Dependencies are inferred from the claim text.