Multipart molds and three-dimensional pulp articles molded therefrom
US12241206B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 15, 2024 |
| Grant date | Mar 4, 2025 |
| Priority date | — |
| Expiry date | Oct 15, 2044 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB33Y80/00
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention includes a system of multipart devices for the formation, pressing, and coating of molded pulp fiber articles. The system includes a mold device, a pressing device, and/or a coating device. Each device comprises a screen fastened or otherwise connected to the housing unit. The housing unit is a solid, non-porous housing element, and multiple housing units are configured to be reversibly connected to form a single device. When joined together, the screens of each housing unit form a continuous cavity for the molding, pressing, and coating of the product. The housing unit of a mold device comprises one or more vacuum systems which direct vacuum pressure to the product surface of the mold screen to form a pulp fiber product from a pulp fiber slurry. The pulp product is operable to be dried in the mold device, resulting in the formation of a stable, thin-walled pulp product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.