Coating processes – With post-treatment of coating or coating material – Solid treating member or material contacts coating
Patent
1994-11-23
1996-05-21
Beck, Shrive
Coating processes
With post-treatment of coating or coating material
Solid treating member or material contacts coating
118410, 427128, B05D 126
Patent
active
055187730
ABSTRACT:
A coating apparatus for forming one or more coating layers on a substrate by means of an extrusion-type head comprising a front edge located on an upstream side with respect to a moving direction of the substrate and a back edge which is located on a downstream side in the moving direction of the substrate. The back edge has a corner portion partially defining an extrusion slot and which is displaced further from the substrate than the front edge in a state in which a precoating solution comprised mainly of an organic solvent is applied in advance on a coating surface of the substrate. A chamfered surface is formed on the corner portion. According to the invention, an angle .alpha. formed by the chamfered surface and a downstream inclined surface of the back edge is such that 40.degree..ltoreq..alpha..ltoreq.140.degree., an angle .beta. formed by chamfered surface and an upstream inclined surface of the back edge is such that 40.degree..ltoreq..beta.<180.degree., and a width L (mm) of the chamfered surface is such that 0.002.ltoreq.L. Further, an angle .theta. formed by the downstream inclined surface of the back edge and the substrate which extends gradually away from the head is set to not less than 25.degree..
REFERENCES:
patent: 4480583 (1984-11-01), Tanaka et al.
patent: 4907530 (1990-03-01), Shibata et al.
patent: 5105760 (1992-04-01), Takahashi et al.
patent: 5202164 (1993-04-01), Takahashi et al.
Shibata Norio
Suzuki Akihiro
Takahashi Shinsuke
Tomaru Mikio
Bareford Katherine A.
Beck Shrive
Fuji Photo Film Co. , Ltd.
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