Pattern bonding and creping of fibrous substrates to form laminated products
US4610743A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 22, 1982 |
| Grant date | Sep 9, 1986 |
| Priority date | — |
| Expiry date | Sep 22, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24463
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Two or more webs (11 and 12) of highly bulked substrate are 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 webs are compressed only under the raised areas; as a result, the binding liquid applied by the gravure roller (14) to the laminate of the two webs is absorbed substantially through the webs 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 laminate, 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 laminate only in the compressed areas. The coated laminate (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 laminated product bound together by an interconnected network of lines of strength extending through the laminate. The areas between the lines of strength are …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.