发明授权
- 专利标题: Process of forming a perforated web
- 专利标题(中): 形成穿孔网的方法
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申请号: US10422029申请日: 2003-04-23
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公开(公告)号: US06780372B2公开(公告)日: 2004-08-24
- 发明人: Brian Francis Gray
- 申请人: Brian Francis Gray
- 主分类号: B29C5136
- IPC分类号: B29C5136
摘要:
A process of forming a soft and resilient web exhibiting a substantially continuous pattern of debossments or apertures is disclosed. The process comprises locally heating process to melt predetermined points of the web. The process includes: continuously bringing the web in contact relation with a forming structure exhibiting a substantially continuous pattern of apertures corresponding to the debossments or apertures of the web; locally heating the region of the web at the predetermined points along the surface of the web by an energy source to give the web temperature above its melting temperature; applying a substantially uniform fluid pressure differential to the locally heated web at least in those areas to be debossed or apertured, whereby the web is debossed or apertured at the predetermined points and generally maintains its surface structure at least in those areas in which the web is not debossed or apertured; and removing the debossed or apertured web from the forming structure. A soft and resilient web formed by the process is also disclosed.
公开/授权文献
- US20030201582A1 Process of forming a perforated web 公开/授权日:2003-10-30
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