Flowable and meterable densified fiber flake
US6837452B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 30, 2002 |
| Grant date | Jan 4, 2005 |
| Priority date | — |
| Expiry date | Aug 30, 2022 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21F1/66
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A process for making singulated pulp flakes is provided. The process includes dewatering liquid pulp stock to a consistency of about 30 to about 50% solids. The process includes initial flaking to break up the dewatered pulp bundles into semi-uniform flakes having a median size of from about 3 to about 5 mm3 and a consistency of from about 33 to about 55% solids. The process includes drying the flaked pulp to a consistency of from about 85 to about 97% solids. The process includes flaking a second time to separate the flakes that may have bonded during drying. The product “singulated” flakes then go to a baler for packaging. In another embodiment, the process includes blending the liquid pulp stock with at least one adjuvant prior to dewatering.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.