基本信息:
- 专利标题： NONWOVEN COMPOSITE STRUCTURE WITH EXCELLENT WATER VAPOUR PERMEABILITY
- 申请号：PCT/EP2021/067226 申请日：2021-06-23
- 公开(公告)号：WO2021260053A1 公开(公告)日：2021-12-30
- 发明人： DE WEVER, Willem , VAN PARIDON, Henk , TOBIESON, Gustaf , NUMMILA-PAKARINEN, Auli , WANG, Jingbo
- 申请人： BOREALIS AG
- 申请人地址： Wagramer Strasse 17-19
- 专利权人： BOREALIS AG
- 当前专利权人： BOREALIS AG
- 当前专利权人地址： Wagramer Strasse 17-19
- 代理机构： KADOR & PARTNER PARTG MBB
- 优先权： EP20182632.8 2020-06-26
- 主分类号： B32B5/02
- IPC分类号： B32B5/02 ; B32B2250/02 ; B32B2250/24 ; B32B2250/246 ; B32B2255/02 ; B32B2255/26 ; B32B2264/00 ; B32B2307/30 ; B32B2307/546 ; B32B2307/7246 ; B32B2419/00 ; B32B2419/06 ; B32B2439/80 ; B32B2535/00 ; B32B2555/02 ; B32B2607/00 ; B32B5/022
摘要：
The present invention relates to a composite comprising a nonwoven fabric being the substrate of the composite, wherein the nonwoven fabric comprises a polymer (A) selected from the group consisting of polyethylene, polypropylene, polyethylene terephthalate and polyamide; and a coating layer, wherein the coating layer comprises a polymer (B), wherein said polymer is an ethylene copolymer, preferably a polar ethylene copolymer; whereby the coating layer overlays at least one surface of the nonwoven fabric; and whereby the composite has a water vapor transmission rate (WTVR) according to ASTM E-96 ((water cup method) at 38°C at 50 % RH at the outside of the sample and 100% RH at the inside of the samples) of more than 50 g/[m2/24h], preferably of more than 100 g/[m2/24h].
IPC结构图谱:
| B | 作业；运输 |
| --B32 | 层状产品 |
| ----B32B | 层状产品，即由扁平的或非扁平的薄层，例如泡沫状的、蜂窝状的薄层构成的产品 |
| ------B32B5/00 | 以非同质性或物理结构薄层为特征的层状产品 |
| --------B32B5/02 | .以由纤维或细丝构成的薄层的结构特征为特征的 |