Method and device for fabricating composite materials and bonded sheet items
US6967000B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 12, 2002 |
| Grant date | Nov 22, 2005 |
| Priority date | — |
| Expiry date | Apr 12, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C70/44
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
This invention refers to a method and a device for use in connection with the fabrication of multilayer products (8) such as composites and bonded multilayer sheet products, ect. by means of the so-called “bagging technique,” to increase the compressive pressure (P) on the product being created beyond normal atmospheric pressure. In the bagging technique, which is used to join a plurality of different material layers with one another to form a unit via polymeric binder layers, atmospheric pressure is normally used to press the various objects together in that they are enclosed in a depressurized gas-impervious bag (9, 21) while the various layers are joined to form a unified product. According to the invention, the atmospheric pressure acting upon the outside of the bag is adsorbed by a first material surface (3+4+5) that is larger than the surface of the multilayer product whose intermediate binder layers are to be caused to join together, while a second material surface (3) facing the opposite direction is used to transfer said composite pressure load (P) to the product to be fabricated. The invention also includes a method and a device for distributing the pressure load (17, 18,…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.