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Coating film drying method and coating film drying apparatus

A drying method and technology of drying device, which are applied in the directions of drying gas arrangement, body drying, drying of solid materials, etc., can solve the problems of the influence of the surface state of the coating film, the early hardening of the coating film of the outer plate, and the inability to release steam, so as to reduce the drying time. Increases, inhibits hardening, and inhibits damage

Inactive Publication Date: 2009-05-20
TAIKISHA LTD +1
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  • Claims
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Problems solved by technology

[0004] However, according to the experiments conducted by the present inventors, it can be known that when the outer panel coating film is heated and dried based on radiant heat, although the outer panel coating film can be heated rapidly, the surface temperature of the outer panel coating film is higher than the internal temperature. The surface side of the board coating film tends to harden early
Therefore, when such early hardening occurs on the surface side of the coating film of the outer plate, the steam generated by the internal bumping cannot be released, and the state of the coating film surface is affected.

Method used

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  • Coating film drying method and coating film drying apparatus
  • Coating film drying method and coating film drying apparatus
  • Coating film drying method and coating film drying apparatus

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Embodiment Construction

[0035] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0036]In the field of body painting, the use of volatile organic solvents is decreasing day by day. For example, in the exterior coating process of a car body, as shown in Figure 1, when using a solvent-based paint, a primer coating process, a clear coating process, and a drying process are performed, while using a water-based paint In this case, in order to dry the water-based paint film before the clear coating process, it is necessary to insert a preheating process (including a cooling process) between the primer coating process and the clear coating process. The preheating process usually requires a process length of more than 4 minutes. From the perspective of saving space, it is hoped that the process can be completed in a shorter time. Next, a case where the coating drying method according to this embodiment is applied to the preheating step will be described as...

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Abstract

Disclosed is a method and apparatus for drying a coating film (4a) on an exterior panel of a box-shaped workpiece (4), wherein radiant rays, and warm air having a temperature less than a hardening temperature of the coating film (4a), are supplied simultaneously and directly to the coating film (4a). The method and apparatus of the present invention can dry the coating film (4a) on the exterior panel of the workpiece (4) within a relatively short period of time, without causing a negative effect on a surface quality of the coating film (4a).

Description

technical field [0001] The present invention relates to a coating drying method and a coating drying device for drying an outer plate coating film of a box-shaped object to be dried. Background technique [0002] As a drying method for coating, there is, for example, disclosed in Japanese Patent Laid-Open Publication No. 2003-236437, in which hot air is blown to the outer panel coating film of a box-shaped object to be dried. By adopting the technical proposal, the drying of the coating film of the outer panel can be realized by promoting the evaporation of water on the surface of the coating film of the outer panel. [0003] Recently, however, from the viewpoint of the introduction of water-based paints and the like accompanying the reduction of volatile organic solvents, a drying method capable of shortening the drying time of the coating film is required. As such a drying method, for example, as disclosed in Japanese Patent Laid-Open Publication No. Hei 11-221513, it is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F26B7/00F26B3/28F26B3/02F26B15/00F26B21/00
CPCF26B3/283F26B21/004F26B15/12F26B2210/12
Inventor 堀泽里志东冈重孝石田浩三松田隆臣迫田俊之神田辉夫古贺一阳
Owner TAIKISHA LTD
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