Patent ID: 9572262
Date: 2017-02-14
CPC Classifications: B23B,B32B,C10M,H05K

Claim:
1. A method for preparing a printed circuit board backing plate, comprising: coating a lubricating and radiating resin on the upper and lower surfaces of a wood fiberboard to form a lubricating and radiating resin layer; before the lubricating and radiating resin is completely dried out, bonding a wood pulp paper to the exposed surfaces of the lubricating and radiating resin layer; and coating the outer surface of the wood pulp paper with unsaturated polyester resin to form an unsaturated polyester resin layer; wherein the lubricating and radiating resin is prepared from a principal component of 95 parts by weight and a nonionic surfactant of 5 parts by weight, the principal component is composed of polyethylene oxide, polyethylene glycol, glycerol, and one of vinyl acetate and polyvinyl alcohol.