Process for manufacturing individual layered structures comprising particulate material, and layered structures therefrom
US6248202A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 4, 1999 |
| Grant date | Jun 19, 2001 |
| Priority date | — |
| Expiry date | Jun 4, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1097
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A process for manufacturing individual layered structures and the structures themselves. A continuous layered structure is provided. The continuous layered structure has designated cutting regions and includes a particulate material between the layers. At least one of the layers is permeable to liquids. A thermoplastic material in liquid state is applied to the continuous layered structure over at least part of the designated cutting regions to provide the designated cutting regions with a joining means. The thermoplastic material is made of natural or synthetic polymers, or mixtures thereof. The thermoplastic material has a softening point, as measured according to the ASTM Method E 28-67, lower than 120.degree. C.; a viscosity at 130.degree. C. lower than 0.05 Pa.s; and a temperature range in which the viscosity changes between 0.05 Pa.s and 0.35 Pa.s which is greater than 5.degree. C. The thermoplastic material is allowed to set. The continuous layered structure is cut in the designated cutting regions to provide individual layered structures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.