Method of treating a web of material with a liquid
US5285544A · kind A · utility
1Cited by
7References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 17, 1992 |
| Grant date | Feb 15, 1994 |
| Priority date | — |
| Expiry date | Sep 17, 2012 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06B3/201
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The treatment of a material web (2) ensues in a U-shaped shaft comprising two shaft limbs (3, 4) and a connecting area (5) between both the shaft limbs. The shaft is filled with a treatment liquid, the feed of fresh treatment liquid and also the circulation of treatment liquid ensuing beneath the surface of the liquor within the shaft limb. The effect is a particularly intensive charging of the material web, with extremely economic use of treatment liquid. Foaming of the treatment liquid is prevented, also in the case of heavy turbulence.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.