Process for producing carded and air-laid non-woven composite fabric
US6273978A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 25, 2001 |
| Grant date | Aug 14, 2001 |
| Priority date | — |
| Expiry date | Jan 25, 2021 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06N3/0013
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention provides a process for producing a carded and air-laid non-woven composite fabric. First, a fiber is subjected to carding treatment through a carding machine to form a carded web. Then, a fiber, powder, or particulate material is subjected to air-laying through an air-laying device to form an air-laid web. The sequence of carding and air-laying steps can be exchanged, and the carding machine and the air-laying device are disposed on the same production line. Finally, the above webs are consolidated into a non-woven composite fabric. In the present invention, since carding and air-laying are conducted on the same production line, the procedure for producing air-laid webs off-line can be omitted. Therefore, the thermoplastic polymer amount added to increase the web strength can be decreased, thus decreasing the production cost.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.