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AssigneesAIOI Insurance Co., Ltd., Sankyo Rikagaku Co., Ltd., The Solar Corporation, Teikoku Piston Ring Co., Ltd.
InventorsMasayoshi Nagasawa, Hideetsu Kimura, Isao Kunii, Kyutarou Fukui, Kazumi Watanabe, Kuniyasu Taguchi, Tadao Shimizu, Shigemitsu Ninomiya
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A conventional undercoating method in repair painting on a damaged vehicle, which includes many working processes, possesses drawbacks of being low in working efficiency and making a finally repaired area exceedingly larger than an initial damaged area. To overcome the drawbacks, the invention provides a undercoat forming method using newly developed putty composed of specific compositions, which is capable of forming a thick coating layer. According to the invention, the processes of polishing of the coating layer by dry sanding and applying the putty respectively can be performed in one operation.
A method for forming undercoating in repair coating on a damaged portion of a vehicle, comprising removing an old coating from said damaged portion, subjecting a verge portion of said damaged portion from which said old coating is removed to a feathering edge treatment, spraying a putty composition composed of (1) 100 parts by weight of main agent containing 25 to 40 percent by weight of unsaturated polyester resin and 23 to 13 percent by weight of reactive diluent so as to have a viscosity of 0.1 to 3.0 Pa.s, and (2) 1 to 4 parts by weight of curing agent, to form a coating layer of about 1 mm at most, drying said sprayed putty, and dry-sanding said dried putty, wherein said spraying, drying and dry-sanding are performed respectively in one operation.
Dependencies are inferred from the claim text.