发明授权
US06835348B2 Method and device for producing open type polymide moldings, and base material for reflective bodies in lighting equipment
失效
用于制造开式聚酰亚胺模制品的方法和装置，以及用于照明设备中的反射体的基材
- 专利标题： Method and device for producing open type polymide moldings, and base material for reflective bodies in lighting equipment
- 专利标题（中）： 用于制造开式聚酰亚胺模制品的方法和装置，以及用于照明设备中的反射体的基材
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申请号： US09926143申请日： 2001-09-10
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公开(公告)号： US06835348B2公开(公告)日： 2004-12-28
- 发明人: Haruhiko Hirosue , Shigeo Shibata , Hideaki Machida
- 申请人： Haruhiko Hirosue , Shigeo Shibata , Hideaki Machida
- 优先权： JP2000-004209 20000113
- 主分类号： B29C4302
- IPC分类号： B29C4302
摘要：
A polyimide film F is brought into an intimate contact with a molding die 3 having a concave molding surface 3a so as to tightly close the open end thereof, and the polyimide film F is bent to deform only by the pressure difference of gas while being heated in a contactless manner. Molding is conducted by applying depressurization for a space 8 on the side of the molding die 3 relative to the polyimide film F while pressurizing the space 9 on the opposite side for the pressure difference at least in the final stage of the bending deformation so as to be in intimate contact with the concave molding surface 3a.