发明名称 |
VERBESSERUNGEN IN VERBINDUNG MIT SCHWEISSEN |
摘要 |
The invention relates to a method of, and apparatus for, welding an element comprising paper to a thermoplastic material, without pre-treatment of the plastics material. In one described embodiment a laminate (12) comprising paper, with a vapour permeable, liquid impermeable coating on one major surface, was successfully welded to a polypropylene material (15) some 1.5 mm thick, the uncoated surface of the laminate forming the interface with the polypropylene, by subjecting the interface to conditions between two ranges of parameters, a temperature of 185 DEG C and a pressure of 460 kPa for a period of 10 seconds and a temperature of 220 DEG C and a pressure of 460 kPa for a period of 5 seconds. All the welds effected between said ranges of parameters produced an acceptable weld of the paper to the thermoplastics. |
申请公布号 |
DE69227196(D1) |
申请公布日期 |
1998.11.05 |
申请号 |
DE1992627196 |
申请日期 |
1992.11.25 |
申请人 |
RECKITT & COLMAN PRODUCTS LTD., LONDON, GB |
发明人 |
WALLWORK, STEPHEN, FRED, BOLTON BL1 5BD, GB |
分类号 |
A61L9/12;B29C65/00;B29C65/02;B29L22/00;B65B7/28;B65D77/20 |
主分类号 |
A61L9/12 |
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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