发明名称 |
UN METODO DE PRODUCIR UNA TELA NO TEJIDA LABRADA. |
摘要 |
A non-woven fabric having a pattern defined by an array of discrete areas having a reduced fibre density but which are substantially free of perforations is produced by supporting a freshly wet laid web of the non-woven fabric on a porous surface and directing spaced jets of fluid against the unsupported side in order to displace fibres within discrete areas whilst maintaining in position a proportion of fibres that are within those areas and that are adjacent the porous surface. The fabric web may be supported on a Fourdrinier wire (1) and the jets of fluid (e.g. water) may be directed through the apertures in a perforated cylinder (6), the fluid being supplied under pressure from a water-knife device (11). The apertures in the cylinder (6) preferably have a cross-section that increases in the direction of the water jets. Vacuum may be applied through the Fourdrinier wire (1) by means of a vacuum box (10) and vacuum may also be applied within the cylinder (6) from means (17) in order to remove excess water from within the cylinder (6). |
申请公布号 |
ES509945(D0) |
申请公布日期 |
1983.04.16 |
申请号 |
ES19820509945 |
申请日期 |
1982.02.26 |
申请人 |
DEXTER LTD C H;NON TISSES STE FSE |
发明人 |
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分类号 |
D21F1/44;D04H1/70;D21F;D21F11/00 |
主分类号 |
D21F1/44 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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