PURPOSE: To prevent the separation of a metal plate and resin layer and the breakdown of the resin layer under working by forming the composite metal plate forming a synthetic resin layer on the metal plate surface in a cup shape and making it a deep drawn container with its ironing.
CONSTITUTION: The synthetic resin layer 11 excellent in a mechanical intensity is formed with its fixture on the surface of a metal plate 10. This composite plate is formed in a cup shape with a press forming or drawing. This cup-shaped container is subjected to an ironing, the diameter is reduced in the sectional shape following a punch P and it is worked in a deep drawn container. In this case, a new fixing state is caused with the redeposition or readhesion of the metal plate 10 and synthetic resin layer 11 by the friction heat caused in ironing or the pressing force. Since the synthetic resin layer 11 having excellent mechanical intensity is employed, it is difficult to break down in case of ironing.
HIRAOKA OSAMU
TAKAHASHI OSAMU
YANAGIHARA HIROSHI
ASIA KINZOKU KOGYO
| JPS5142688A | 1976-04-10 | |||
| JPS5163787A | 1976-06-02 | |||
| JPS60170532A | 1985-09-04 |