Method and apparatus for applying a random speckled dye pattern to carpet material and the like
US4803746A · kind A · utility
6Cited by
5References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 4, 1988 |
| Grant date | Feb 14, 1989 |
| Priority date | — |
| Expiry date | Apr 4, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B3/1064
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method and apparatus for applying a random, speckled pattern of dye to a moving web, such as carpeting. A series of closely spaced distributor units are mounted over the top surface of the web, and each carries a rotating disc, onto which dye material is flowed at a controlled rate. The rotating discs are formed with a highly irregular peripheral contour, such that a high degree of variability and randomness is imparted to the size and trajectory of the atomized dye particles. A significantly improved appearance of randomness in the speckled pattern is achieved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.