Method of producing mottled rotor spun yarn
February 24, 2008. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3365872 3864902 Sliver supply apparatus for resolving rollers in open end spinning machines Multi-component spun yarn and method and apparatus for manufacturing same Process for spinning of core/mantle yarns and yarn products Method of forming a slub yarn Process for making composite yarn of continuous filaments and staple fibers Spun yarn and method and apparatus for forming spun yarn Patent #: 4711080 InventorAssigneeApplicationNo. 07/159773 filed on 02/24/1988US Classes:57/409, Plural or variable feed57/224, Discrete fiber wrap57/408With fiber separating and/or feedingExaminersPrimary: Watkins, DonaldAttorney, Agent or FirmInternational ClassesD01H 4/08 (20060101)D01H 4/00 (20060101) D02G 3/34 (20060101) AbstractA mottled appearing yarn having a main strand of fibers and wrapper fibers of different color than the main strand. The yarn is produced by feeding longer and coaser fibers with shorter and finer fibers in an open end rotor spinning machine and controlling the operation to accentuate wrapper fiber formation with the longer and coarser fibers. The wrapper fiber formation is accentuated by using a relatively low rotor diameter to fiber length ratio and by using an aggressive navel action.Field of SearchWith loose fibersWith other operations With twisting of core or product Covered or wrapped type Crimped or bulked type Covered or wrapped Discrete fiber wrap Including crimped or bulked material Open end spinning Rotating chamber type With fiber separating and/or feeding Plural or variable feed | |
