| 摘要 |
A method of producing plywood for use in making formwork, the method comprising dispersing a first dose of adhesive polyolefine resin powder 2 on the plywood 1 being conveyed, preheating the resin powder on the plywood, pressing the preheated resin with a first heated roller until it spreads on the surface of the plywood in a molten state and covers the plywood as a first film bonded thereto, dispersing a second dose of non-adhesive polyolefine resin powder 6 on the first film, wherein the non-adhesive polyolefine resin is chemically compatible with the first resin, preheating the second dose of resin powder on the first film, pressing the preheated second resin with a second heated roller until a second film is produced on the first film, and cooling the first and second films bonded to each other on the plywood rapidly with a blast of cooling medium until the surface temperature drops below 80 DEG C. <IMAGE> |
