In-line flock cutting process
US4014648A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 8, 1974 |
| Grant date | Mar 29, 1977 |
| Priority date | — |
| Expiry date | Nov 8, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S83/913
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A continuous in-line flock cutting process is disclosed, for making flock from tow which contains a lubricant which is detrimental to the flock and must be removed. The tow is continuously fed, heat treated and immersed in an aqueous scouring liquid, and is continuously wet-processed. The excess scouring liquid is squeezed out, the tow is rinsed with water, rinse water is squeezed out, and a finish is applied to the tow and partially squeezed out in an in-line continuous process to remove a portion of the applied finish. Thus processed, the still-wet tow is continuously cut into wet flock, the wet flock is then dried and beaten to open up and separate the individual flock particles, and screened.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.