Apparatus and method for tensionless winding of low modulus elastic yarns into a cylindrical package for uniform dyeing
US4688734A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 22, 1986 |
| Grant date | Aug 25, 1987 |
| Priority date | — |
| Expiry date | May 22, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2701/319
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A low-density, substantially cylindrical, wound package of substantially tensionless, low modulus, highly elastic yarn, preferably having a density of not greater than about 0.300 g/cc. Such packages are made by advancing tensionless yarn through a traversing mechanism in a stream of fluid which is moving in the same direction as the yarn and at a speed greater than the linear speed of the yarn being taken-up on the cylindrical package. Such packages are produced on apparatus for tensionless traversing of yarn wherein the yarn guide on the traversing end of the traversing element comprises the outlet of a fluid jet through which fluid is driven to maintain the tensionless condition of the yarn as it passes through the traversing element and is thereafter wound into a low density, tensionless package.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.