Method of producing an air laid paper web utilizing microencapsulated hydrogen bond promoting material
US4324753A · kind A · utility
22Cited by
3References
12Claims
0Family size
Inventor
Key dates
| Filing date | Nov 3, 1980 |
| Grant date | Apr 13, 1982 |
| Priority date | — |
| Expiry date | Nov 3, 2000 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H23/04
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method of forming an air laid web of hydrogen bonded wood pulp fibers is disclosed. More specifically, a paper producing method is disclosed wherein microencapsulated hydrogen bond promoting material is thoroughly premixed with wood pulp fibers. The mixture is then air laid on a moving screen to form a three dimensional continuum. The microcapsules may then be ruptured by heat and/or pressure to release the hydrogen bond promoting material evenly throughout the continuum. The continuum may then be heated or pressed to further consolidate the web.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.