Patent ID: 6176965
Filing Date: 2001-01-23
Classification: C08G,C08L,C09J,Y10T

Abstract:
A method of providing an Al alloy pressed plate that is bonded with another structural member, comprising the steps of:applying a lubricant suitable for a pressing operation to a surface of an Al alloy plate having a naturally occurring oxide film thereon;subjecting said Al alloy plate to a pressing operation;applying an adhesive to the surface of said Al alloy pressed plate without degreasing said lubricant, said adhesive being formed of a dehydrated aluminum or zinc phosphate salt in the amount of 5 to 30% by weight; a latent curing agent; a polyester type epoxy resin; and at least one resin selected from the group consisting of a bisphenol epoxy resin, a rubber-modified bisphenol epoxy resin and a urethane-modified epoxy resin; andthereafter bonding another structural member to the Al alloy pressed plate via said adhesive while suppressing a reduction in bonding strength between the pressed plate and the structural member by said adhesive which may otherwise occur due to water in the naturally occurring oxide film that exists on the surface of the Al alloy pressed plate.