Laminate of film with vapor-permeable barrier function
US11884043B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 28, 2017 |
| Grant date | Jan 30, 2024 |
| Priority date | — |
| Expiry date | Apr 28, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2571/00
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The present invention relates to a laminate of thermoplastic resin film with vapor-permeable barrier function, wherein the laminate comprises: at least one layer of thermoplastic resin film having a continuous structure in a thickness of 1-120 μm with vapor-permeable barrier function; and at least one layer of a natural or chemical product layer, wherein the natural or chemical product layer is a discontinuous film, a non-woven product, an adhesive product, and/or a textile fibre product. In the laminate of the present invention, the gram weight of the product is 1-250 g/m2. The laminate of the present invention is desirable in vapour permeability and diffusivity, has a continuous structure, and can block solid dusts with a size of 5 nm or more, aerosols, bacteria, viruses and liquids. Furthermore, the laminate can have a very good blocking effect, thereby having a protective function.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.