Method for making multi-layer molded padded products
US4080416A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 3, 1976 |
| Grant date | Mar 21, 1978 |
| Priority date | — |
| Expiry date | May 3, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/4885
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A apparatus and method for making multiple layer molded padded products comprising at least three layers, the intermediate layer comprising padding. All of the layers are formed on male molds which are cast from a single master mold, thereby reducing mold costs and assuring perfect matching of the layers. The entire area of the female mold on which the intermediate layer of padding is formed is either completely cut away or is spaced away from the male mold so that the thickness of the pad is not substantially reduced during the molding operation. The female mold is heated and acts as an oven to draw back compressed fiberfill padding and/or to cure polyurethane foam padding.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.