发明授权
- 专利标题: Production method of polyurethane foam molded article
- 专利标题(中): 聚氨酯泡沫成型制品的生产方法
-
申请号: US11302837申请日: 2005-12-14
-
公开(公告)号: US07556756B2公开(公告)日: 2009-07-07
- 发明人: Masafumi Nakamura , Hiroshi Ikuta , Masaru Suzuki , Hitoshi Maeda
- 申请人: Masafumi Nakamura , Hiroshi Ikuta , Masaru Suzuki , Hitoshi Maeda
- 申请人地址: DE Leverkusen
- 专利权人: Bayer MaterialScience AG
- 当前专利权人: Bayer MaterialScience AG
- 当前专利权人地址: DE Leverkusen
- 代理商 N. Denise Brown; Noland J. Cheung
- 优先权: JP2004-366178 20041217
- 主分类号: B29C44/06
- IPC分类号: B29C44/06
摘要:
The present invention provides a method for producing a polyurethane foam molded article from a polyisocyanate compound, a polyol mixture containing polyol, a catalyst and a crosslinking agent, and a blowing agent, said method comprising continuously injecting the polyisocyanate compound, the polyol mixture and the blowing agent into a mold, using a molding machine capable of separately supplying the polyisocyanate compound, the polyol mixture and the blowing agent, while the timing of starting to inject the blowing agent is delayed after the start of injecting the polyisocyanate compound and the polyol mixture. The inventive method produces, in a single stage, a polyurethane foam molded article having the skin or high density portion selectively formed on portions of the molded article actually requiring them, where the proportions of the skin and the high density portion and the foamed core can be varied freely.
公开/授权文献
- US20060131791A1 Production method of polyurethane foam molded article 公开/授权日:2006-06-22
信息查询