Method of aerodynamic texturing, texturing nozzle, nozzle head and use thereof
US6088892A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 25, 1998 |
| Grant date | Jul 18, 2000 |
| Priority date | — |
| Expiry date | Feb 25, 2018 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD02G1/161
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method of air jet texturing is described wherein the intensity of texturing is proposed to be increased in that an air flow exceeding Mach 2 is obtained by the design of the nozzle duct. The total opening angle of the nozzle duct (11) directly in front of the texturing zone is designed to be greater than the ideal Laval angle with an effective length which is preferably a multiple of the smallest diameter of the nozzle. This predominantly improves the quality of texturing, quite particularly at higher production rates. These can be increased into the range of 600 to 1000 m/min and higher. It has surprisingly been found that the novel nozzle core (10) can be designed so that it has all advantages of the novel invention and can be used as a substitute for prior art nozzle cores. The same applies to the complete texturing head as the novel invention can be used within the same geometric external dimensions, the same air pressure and the same quantity of air.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.