发明名称 |
Method of manufacturing a filter for use in venting colostomy or ileostomy appliances |
摘要 |
The invention provides a method of making a filter for use in venting a colostomy or ileostomy bag. An assembly comprising a first sheet of a gas permeable and water impermeable material, a second sheet of material which is gas permeable or is rendered gas permeable by the provision of at least one aperture therethrough, and a sheet of carbon cloth between the first and second sheets is fed to a sealing station. In the sealing station the assembly of sheets is sealed together, preferably heat sealed by a weld extending through the periphery of the carbon cloth, to form a filter comprising two pieces of the above mentioned first and second sheets with a piece of the carbon cloth sealed therebetween. The filter is then removed from the remainder of the assembly.
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申请公布号 |
US4120715(A) |
申请公布日期 |
1978.10.17 |
申请号 |
US19770811532 |
申请日期 |
1977.06.30 |
申请人 |
MATBURN (HOLDINGS) LIMITED |
发明人 |
OCKWELL, MALCOLM CHARLES;MCLEOD, PATRICK HUGH;BRIGGS, PETER JAMES |
分类号 |
A61F5/441;B01D46/10;(IPC1-7):A61F5/44;B32B31/18;B32B31/20 |
主分类号 |
A61F5/441 |
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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