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US 5,127,974 AGranted
Method of protecting coating film
AssigneeKansai Paint Co., Ltd.
InventorsTakeshi Tomiyama, Takeshi Eda, Sadaaki Hashimoto, Junitiro Tomiya
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AssigneeKansai Paint Co., Ltd.
InventorsTakeshi Tomiyama, Takeshi Eda, Sadaaki Hashimoto, Junitiro Tomiya
Estimating the term…
Respectively disclosed is a method of temporarily protecting a surface of a top coating of a coating finished automobile, which method comprieses (A) adhering a plastic film having a releasable pressure-sensitive adhesive layer to a body surface of the coating finished automobile and/or (B) heating a heat-shrinkable plastic film to be shrinked so as to fit to an intended shape and to cover the body surface of the coating finished automobile; which method comprises applying to the body surface of the coating finished automobile a plastic film prepared by intermittently coating a releasable pressure-sensitive adhesive layer to cover the body of the coating finished automobile; which method comprises covering the body surface of the coating finished automobile with a plastic film having a rough surface on a side contacting with a coating surface, and fixing a terminal of the film and heating, when needed, to cover in conformity with a body shape; and which method comprises subjecting a plastic film to vacuum forming to cover a body surface of the coating finished automobile in conformity with the body shape.
A method of temporarily protecting a surface of a top coating of a coating finished automobile, which method comprises cutting a releasable film formed by successively laminating a release sheet, a releasable pressure-sensitive adhesive layer having a tack strength of 200 to 500 g/25 mm and having a thickness of 20 to 40 .mu.m and a plastic film layer having a thickness of 30 to 50 .mu.m in conformity with a body shape of the automobile, releasing one end portion of the releasable sheet, pressing and adhering a resulting exposed adhesive layer onto a corresponding one end portion of the body surface of the automobile to be fixed, and successively releasing a remaining releasable sheet to the other end portion thereof to successively press and adhere a successively exposed adhesive layer onto a remaining body surface of the automobile so as to adhere the exposed adhesive layer onto the whole surface of the body of the automobile.
A method of temporarily protecting a surface of a top coating of a coating finished automobile, which method comprises covering a whole surface of the body of the automobile with a heat-shrinkable plastic film having a thickness of 10 to 50 .mu.m, a degree of heat shrinkage of 10 to 30 percent and a film strength of 4 to 10 kg/25 mm, partly fixing the plastic film onto the body surface of the automobile with a fixing device selected from a group consisting of a pressure-sensitive adhesive and a fastener, and heating the plastic film at 60.degree. C. to 110.degree. C. for 1 to 5 minutes to be shrunk and tightly fit onto the whole surface of the body of the automobile.
A method of temporarily protecting a surface of a top coating of a coating finished automobile, which method comprises covering a whole surface of the body of the automobile with a heat-shrinkable plastic film having a thickness of 10 to 50 .mu.m, a degree of heat shrinkage of 10 to 30 percent and a film strength of 4 to 20 kg/25 mm, fixing an edge portion of the plastic film onto a corresponding edge portion of the body of the automobile by releasing a release sheet of a releasable film formed by successively laminating the release sheet, a releasable pressure-sensitive adhesive layer having a tack strength of 200 to 500 g/25 mm and having a thickness of 20 to 40 .mu.m and a plastic layer having a thickness of 30 to 50 .mu.m and by applying a resulting laminate composed of the releasable pressure-sensitive adhesive layer and the plastic layer onto the corresponding edge portion of the plastic film and of the body of the automobile in such a manner than an exposed surface of the releasable pressure-sensitive adhesive layer can be faced to the corresponding edge portion of the plastic film and of the body of the automobile so as to wrap up the edge portion of the plastic film and of the body of the automobile, pressing and adhering the exposed adhesive layer onto the corresponding edge portion of the plastic film and of the body surface of the automobile, and heating the plastic film at 60.degree. to 110.degree. C. for 1 to 5 minute to be shrunk and tightly fit onto the whole surface of the body of the automobile.
A method of temporarily protecting a surface of a top coating of a coating finished automobile, which method comprises intermittently coating a releasable pressure-sensitive adhesive having a tack strength of 200 to 500 g/25 mm onto one side of a plastic film having a thickness of 30 to 50 .mu.m to form an intermittent releasable pressure-sensitive adhesive layer of 15 to 30 .mu.m, laminating a releasable sheet onto the intermittent releasable pressure-sensitive adhesive layer to form a release film, cutting the release film in conformity with a body shape of the automobile, releasing one end portion of the releasable sheet, pressing and adhering a resulting exposed intermittent adhesive layer onto a corresponding one end portion of the body surface of the automobile to be fixed, and successfully releasing a remaining intermittent releasable sheet to the other end portion thereof to successively press and adhere a successively exposed intermittent adhesive layer onto a remaining body surface of the automobile so as to adhere the exposed intermittent adhesive layer onto the whole surface of the body of the automobile.
A method of temporarily protecting a surface of a top coating of a coating finished automobile, which method comprises forming a rough surface having a degree of roughness such that an average roughness (Ra) on a central line is 20 to 500 .mu.m and a maximum roughness in height (Rmax) is 20 to 1000 .mu.m on one side of a plastic film, cutting the plastic film in conformity with a body surface of the automobile, uniformly covering the whole surface of the body of the automobile with the plastic film, and fixing an edge portion of the plastic film onto a corresponding edge portion of the body of the automobile with a fixing device selected from a group consisting of a pressure-sensitive adhesive and a fastener.
A method of temporarily protecting a surface of a top coating of a coating finished automobile, which method comprises forming a rough surface having a degree of roughness such that an average roughness (Ra) on a central line is 20 to 500 .mu.m and a maximum roughness in height (Rmax) is 20 to 1000 .mu.m on one side of a plastic film, cutting the plastic film in conformity with a body surface of the automobile, uniformly covering the whole surface of the body of the automobile with the plastic film, and fixing an edge portion of the plastic film onto a corresponding edge portion of the body of the automobile with a pressure-sensitive adhesive or a fastener by releasing a release sheet of a releasable film formed by successively laminating the release sheet, a releasable pressure-sensitive adhesive layer having a tack strength of 200 to 500 g/25 mm and a plastic layer having a thickness of 30 to 50 .mu.m and by applying a resulting laminate composed of the releasable pressure-sensitive adhesive layer of the releasable pressure-sensitive adhesive layer and the plastic layer onto the corresponding edge portion of the plastic film and of the body of the automobile in such a manner than an exposed surface of the releasable pressure-sensitive adhesive layer can be faced to the corresponding edge portion of the plastic film and of the body of the automobile so as to wrap up the edge portion of the plastic film and of the body of the automobile, and pressing and adhering the exposed adhesive layer onto the corresponding edge portion of the plastic film and of the body surface of the automobile.
A method of temporarily protecting a surface of a top coating of a coating finished automobile, which method comprises subjecting a plastic film having a thickness of 50 to 200 .mu.and a film strength of 0.5 to 3 kg/25 mm to vacuum forming to cover the whole surface of the body of the automobile with the plastic film, said vacuum forming being carried out according to a process which comprises placing the coating finished automobile in a vacuum forming machine having an air outlet leading to a suction apparatus, a pressurized air inlet leading to a blower, a fixing part for holding a plastic film in position and a heater for heating the plastic film, holding in position the plastic film having a sufficient size to cover the body surface of the automobile by fixing its edge portion, heating the plastic film by the heater feeding a warm air from the pressurized air inlet at 50.degree. to 110.degree. C. for 1 to 5 minutes to such an extent that the plastic film is softened and floats up, followed by stopping heating and closing the pressurized air inlet, immediately thereafter expelling the air contained therein under a degree of vacuum of 700 to 750 mm Hg.vac. so that the softened plastic film may be pressed and adhered onto the body surface to cover the whole surface of the body of the automobile.
Dependencies are inferred from the claim text.