METHOD OF APPLYING MULTILAYER COATING FILM AND PRODUCT WITH MULTILAYER COATING FILM

• Main Authors: NAGASE, MAGONORI, TOBISAWA, KATSUNORI, FURUKAWA, HIROYASU, SUEMUNE, YOSHIHIRO
• Format: Patent
• Language: English; French; Japanese
• Published: 19.01.2006
• Subjects: APPARATUS FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; PERFORMING OPERATIONS; PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; SPRAYING OR ATOMISING IN GENERAL; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TRANSPORTING

A method of applying a multilayer coating film, in which two or more layers of coating film are applied to a flat plate, such as steel plate, by baking finish, which method is effective for preventing of foam generation; and a product with multilayer coating film obtained by the method. There is provided a method of applying a multilayer coating film, including discharging paint films through multiple slits, simultaneously applying these films to a traveling plate to thereby form a multilayer paint film and carrying out drying or baking thereof, characterized in that with respect to the boiling points of solvents contained in adjacent layers of the multilayer paint film, there is such a relationship that the boiling point of solvent contained in the layer close to the plate is equivalent to or lower than the boiling point of solvent contained in the layer remote from the plate, and that the boiling point of solvent contained in the layer closest to the plate is lower than the boiling point of solvent contained in the layer remotest from the plate. L'invention concerne un procédé d'application d'un film de revêtement multicouche, dans lequel au moins deux couches d'un film de revêtement sont appliquées sur une plaque plate, de type plaque d'acier, par finition au four, ledit procédé permettant de prévenir la génération de mousse ; et un produit comprenant ledit film de revêtement multicouche obtenu selon le procédé. L'invention concerne un procédé d'application d'un film de revêtement multicouche qui consiste à faire passer des films de peinture à travers plusieurs fentes ; à appliquer simultanément ces films sur une plaque de transport afin que soit formé un film de peinture multicouche et à procéder au séchage et à la cuisson de ce dernier. Ledit procédé est caractérisé en ce que, par rapport aux points d'ébullition des solvants contenus dans les couches adjacentes du film de peinture multicouche, le point d'ébullition du solvant contenu dans la couche proche de la plaque est inférieur ou égal au point d'ébullition du solvant contenu dans la couche distante de la plaque, et en ce que le point d'ébullition du solvant contenu dans la couche la plus proche de la plaque est inférieur à celui du solvant contenu dans la couche la plus éloignée de la plaque.