发明授权
US06270874B1 Polyethylene terephthalate resin-coated metal plate of high processability
有权
聚对苯二甲酸乙二醇酯树脂涂层金属板加工性高
- 专利标题: Polyethylene terephthalate resin-coated metal plate of high processability
- 专利标题(中): 聚对苯二甲酸乙二醇酯树脂涂层金属板加工性高
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申请号: US09171120申请日: 1998-12-08
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公开(公告)号: US06270874B1公开(公告)日: 2001-08-07
- 发明人: Hiroyuki Iwashita , Fumiko Gotoh , Atsuo Tanaka
- 申请人: Hiroyuki Iwashita , Fumiko Gotoh , Atsuo Tanaka
- 优先权: JP8-112126 19960410
- 主分类号: B32B500
- IPC分类号: B32B500
摘要:
The present invention produces a polyethylene terephthalate resin covered metal sheet having extremely excellent formability, which can be available for uses in which severe forming is practiced such as drawing, drawing and ironing and drawn and stretch forming as well as the composite forming consisting of drawn and stretch forming followed by ironing. A biaxially oriented film consisting of polyethylene terephthalate resin having a low temperature crystallization temperature ranging from 130° C. to 165° C. is covered at least on one side of a metal sheet by heat bonding in the way that the biaxial orientation of the film of the polyethylene terephthalate resin after being covered is gradually increasing from the contacting portion of the film to the metal sheet to the surface portion of the film.
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