Method for preparing a fibrous sheet
US4487657A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 2, 1981 |
| Grant date | Dec 11, 1984 |
| Priority date | — |
| Expiry date | Jul 2, 2001 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H21/34
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a method for preparing a fibrous sheet by paper-making means, according to which the flocculating agent is introduced in the aqueous suspension containing the basic mixture chosen from the group constituted by (i) the fibers alone when there is no non-binding mineral filler, and (ii) the fibers and the non-binding mineral filler when said latter is present, before and after the introduction of the organic binder. It also concerns, as new industrial product, the sheet obtained according to this method. Finally, it relates to the application of said sheet particularly in the domain of coverings (as a replacement for asbestos) and printing-writing supports.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.