Method for heat treatment of fibrous mats
US4316865A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 18, 1979 |
| Grant date | Feb 23, 1982 |
| Priority date | — |
| Expiry date | May 18, 1999 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2105/251
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A technique is disclosed for heat treatment of fibrous mats, especially mats formed of mineral fibers such as glass and carrying a heat hardenable binder material, such as a thermosetting resin. The method disclosed provides for continuous feed of the mat through a curing or treating oven having a plurality of heat treatment zones. In one form of the method, the heat treatment in at least one zone is effected by circulation of a heated gas, such as air, through the mat in said zone, and the mat is also subjected to heat treatment in a localized area lying within said zone by passage of a second heated gas through the mat, the second heated gas having a pressure higher than that in the surrounding portions of said zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.