| 发明名称 |
VAPOR-PERMEABLE LIQUID-IMPERMEABLE FABRIC |
| 摘要 |
<p>TITLE Vapor-Permeable Liquid-Impermeable Fabric A process is provided for making a water-impermeable, vapor-permeable fabric. A lightweight continous coating of polypropylene resin is applied to the surface of a fibrous sheet to make the sheet impermeable to water and vapor. Subsequent calendering provides vapor permeability to the sheet while maintaining liquid water impermeability. The resultant product is particularly suited for use as a roofing-tile underlayment of as an air-infiltraion barrier.</p> |
| 申请公布号 |
CA1255978(A) |
申请公布日期 |
1989.06.20 |
| 申请号 |
CA19870534693 |
申请日期 |
1987.04.14 |
| 申请人 |
DU PONT (E.I.) DE NEMOURS AND COMPANY |
发明人 |
LOU, GENE W. |
| 分类号 |
B32B27/12;D06C15/00;D06C15/02;D06N3/00;D06N3/04;D06N7/00;E04D12/00;(IPC1-7):D06N7/00 |
主分类号 |
B32B27/12 |
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