Method for treating a web of material with foam
US4384867A · kind A · utility
24Cited by
2References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 27, 1981 |
| Grant date | May 24, 1983 |
| Priority date | — |
| Expiry date | May 27, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S68/90
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for treating a web of material such as rug with a treatment medium in which one treatment medium is applied as part of a layer of foam to the advancing web and the foam allowed to act thereon and, in order to obtain effects not obtainable with the single layer of foam, a further treatment medium is applied to the foam as a foam, liquid, paste or in solid form and allowed to interact with the foam before either treatment medium is fixed, with both treatment media acting on the web.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.