Apparatus and method for impregnating a dry fiber batt
US4231129A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 28, 1979 |
| Grant date | Nov 4, 1980 |
| Priority date | — |
| Expiry date | Mar 28, 1999 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06B5/08
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method and apparatus for impregnation of a dry fabric is disclosed including a purging device which is provided immediately upstream of a supply of liquid within an impregnation tank. The purging device urges a condensable gas through the dry fabric immediately prior to entry of the fabric into the liquid with the purging device providing a pressure differential across the fabric. The fabric is preferably conveyed by a first endless conveyor belt through a passageway of the purging device and subsequently into the impregnating liquid and beneath a first squeeze roller. The purging device displaces the non-condensable gas or air within the fabric with a condensable gas preferably steam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.