Pattern bonding and creping of fibrous products
US4507173A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 22, 1982 |
| Grant date | Mar 26, 1985 |
| Priority date | — |
| Expiry date | Sep 22, 2002 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H5/0032
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A web (12) of highly bulked substrate is passed into a nip formed between a gravure roller (14) and an impression roller (15). The impression roller has raised areas defining an interconnected network of lines such that the web is compressed only under the raised areas; as a result, the binding liquid applied by the gravure roller (14) to the web is absorbed substantially through the web in the compressed areas. The gravure roller (14) may have a uniform surface, such that a light coating of binding liquid is applied to the surface of the uncompressed areas in the web, or the gravure roller may have a pattern of etched grooves or cells which matches and registers with the pattern of raised areas on the impression roller. In the latter embodiment, binding liquid will be absorbed into the web only in the compressed areas. The coated web (21) is applied to the surface (24) of a creping cylinder (25), is dried thereon, and is creped off with a creping blade (27) to form a product bound together by an interconnected network of lines of strength extending through the web. The areas between the lines of strength are not compressed and are not substantially coated with binding liquid, and …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.