Method for preparing an embossed laminate containing at least two layers
US4731139A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 21, 1986 |
| Grant date | Mar 15, 1988 |
| Priority date | — |
| Expiry date | Nov 21, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1043
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for the production of an embossed laminate containing at least two layers, in which a thin top layer of stretchable material is backed with an unvulcanized bottom layer of rubber and pressed with a platen which has recesses which are arranged in a pattern and have a depth exceeding the thickness of the top layer, in which the two layers are bonded and solidified together by vulcanization, and in which at least the top layer is removed in the area of the projections by a cutting, milling or grinding process performed on a straight line, the laminate being exposed to a pressure and deformation acting perpendicular to its surface during the removal of the top layer in the area of the projections.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.