Nonwoven mat with reduced permeability and increased caliper
US12428762B2 · kind B2 · utility
0Cited by
7References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 17, 2020 |
| Grant date | Sep 30, 2025 |
| Priority date | — |
| Expiry date | Dec 18, 2041 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD10B2101/12
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A nonwoven mat and a method of making a nonwoven mat are provided. The nonwoven mat includes reinforcing fibers and a binder composition that includes a polycarboxy polymer and polymer microspheres. The binder composition may also include low-density fibers, such as microfibrillated cellulose fibers. The polymer microspheres have a thermoplastic shell that encapsulates a blowing agent. The thermoplastic shell has magnesium hydroxide on its outer surface. The components of the binder composition interact with one another and/or the reinforcing fibers to form a nonwoven mat having a less permeable structure and a higher caliper.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.