发明授权
- 专利标题： Multi-ply paper and paperboard having a wet-laid ply and a dry-laid ply
- 专利标题（中）： 多层纸和纸板具有湿敷层和干铺层
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申请号： US390218申请日： 1973-08-21
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公开(公告)号： US3954554A公开(公告)日： 1976-05-04
- 发明人: Harold George Curry , Brian William Attwood , Derek Graham Walter White
- 申请人： Harold George Curry , Brian William Attwood , Derek Graham Walter White
- 申请人地址： EN Bristol
- 专利权人： Karl Kroyer St. Anne's Limited
- 当前专利权人： Karl Kroyer St. Anne's Limited
- 当前专利权人地址： EN Bristol
- 优先权： UK41958/72 19720909
- 主分类号： D21F11/04
- IPC分类号： D21F11/04 ; B27N3/10 ; B32B20060101 ; B32B5/26 ; B32B29/00 ; B32B29/02 ; D01G25/00 ; D04H20060101 ; D04H1/00 ; D04H1/16 ; D04H1/58 ; D04H1/72 ; D04H13/00 ; D21F20060101 ; D21F1/00 ; D21F7/00 ; D21F9/00 ; D21F9/02 ; D21F11/00 ; D21F11/08 ; D21J20060101 ; D21H1/02 ; D21H1/06
摘要：
A method and apparatus for making a multi-ply paper sheet wherein a first web is formed by wet-laying fibres and a second web is formed by dry-laying fibres, the two webs being combined to form a multi-ply sheet and wherein the dry-laid web is produced by depositing dry fibres on a supporting band and consolidating the web by hot moist pressing before transferring to the first wet-laid web.
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