Paper sheet fitting method and paper molded article
US12202224B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 25, 2021 |
| Grant date | Jan 21, 2025 |
| Priority date | — |
| Expiry date | Oct 25, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB31B2120/50
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method for fitting a paper sheet includes a water absorption step of causing a region of the paper sheet to absorb water, the region being at least a part of the paper sheet; a placing step of placing the region of the paper sheet between one set of first molding surfaces of a press mold; a molding step of molding the region of the paper sheet into a three-dimensional shape, by closing the press mold; a layering step of layering another paper sheet that is not caused to absorb water on the molded paper sheet, after opening the press mold; a fitting step of fitting the molded paper sheet and the another paper sheet by closing the press mold to mold a laminate into a three-dimensional shape; and a removal step of removing a molded article including a fitting portion, after opening the press mold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.