Honda Giken Kogyo Kabushiki Kaisha

Other

Honda Giken Kabushiki Kaisha

Masayuki Yamaguchi

Yukihide Yamashita

Kenichirou Mori

Hiroshi Arai

Shinji Seo

Kenichiro Mori

Kazuyoshi Uemura

Norihiko Sudo

Shirou Kamiyama

A reverse painting process includes the preheating of work prior to its powder coating. By the preheating of the work, it becomes possible to form a film having a sufficiently large thickness for maintaining a satisfactorily high level of rustproofness in the boundary area between a film of the powdery paint and a film formed by electrodeposition, thus achieving drastic shortening of the time required for heating it in the fusing oven.

Reverse painting process

Disclosed is a powder paint composition that can form coating film having high corrosion resistance and excellent appearance even on a metal substrate surface containing non-flat portions and a process for forming multi-layer coats excellent both in corrosion resistance and top-coat adhesion using the powder paint composition. The powder paint composition comprises a) 30-55 parts by weight of a polyester resin having a hydroxyl value of 50-150, b) 1-20 parts by weight of a hydroxyl group-containing acrylic resin having a hydroxyl value of 30-150, c) 1-15 parts by weight of an epoxy resin, and d) 10-30 parts by weight of a urethodione ring-containing compound, based on 100 parts by weight of solid contents in the powder paint composition, the powder paint composition having an average particle size of 5-40 &mgr;m.

Powder paint composition and process for forming multi-layer coats containing the coat thereof

A powder coating booth for performing therein powder coating onto an article to be coated is divided into an automatic coating zone in which coating is performed only by automatic coating machines and manual coating zones in which coating is performed by a worker. A dry type of first recovering apparatus which recovers only that powder coating material in the automatic coating zone which has not been coated onto the article to be coated is provided separately from a second recovering apparatus which recovers that powder coating material in the manual coating zones which has not been coated onto the article to be coated. In this manner, the ratio of reuse of the recovered uncoated powder coating material is improved.

Powder coating booth

Paints of different color brightness not deposited on the work to be coated in a powder coating process are recovered as a mixture, and a fresh paint of high or low color brightness is added to the mixture to adjust its color brightness and thereby prepare a fresh mixture of medium color brightness which can be used as a paint of medium color brightness.

Powder coating process using two or more kinds of powder paint

Growing community of inventors

Sayama, Japan

Masayuki Yamaguchi