Method of producing pulp moldings
US7067041B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 6, 2001 |
| Grant date | Jun 27, 2006 |
| Priority date | — |
| Expiry date | Apr 18, 2021 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21J3/10
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method of producing pulp moldings having a paper-making process comprising the steps of assembling split mold halves (11, 12) having suction passageways (14) to form a paper-making mold (10), feeding pulp slurry of predetermined set feed concentration into the cavity (13) in the paper-making mold (10), and sucking the pulp slurry through the suction passageways (14) to form a pulp layer (15) on the inner surface of the paper-making mold (10), wherein the concentration of the pulp slurry in the cavity (13) in the initial and/or final period of formation of the pulp layer (15) in the paper-making process is lower than the above-mentioned set feed concentration of the pulp slurry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.