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OwnerJames Lappage, Nigel Anthony Gull Johnson +1inventors
InventorsJames Lappage, Nigel Anthony Gull Johnson, Owen Leslie Roger Hartshorn
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A twisted yarn structure includes constituent fibers which extend between a surface and a core of the yarn structure so that at least one portion of each fiber is trapped and bound within the yarn structure by portions of other fibers. The fibers can extend cyclically or in random fashion between an inner region and an outer region of the yarn, and can be twisted in subgroups along the length of the yarn structure to be locked in position therein. To produce the yarn structure having fibers which cyclically extend between the inner and outer regions, the fibers of a drafted strand of fibers from front drafting rollers are spun and passed through an oscillating guide before being wound on a spindle. To produce the yarn structure having fibers which randomly extend between the inner and outer regions, a strand of fibers is passed from a nip between first roller pair into a buckling zone between the first roller pair and a second roller pair whose rollers are rotating at a surface speed slower than the rollers of the first roller pair, and thereafter twisted.
A method of producing a yarn which is resistant to shedding and is weavable directly as warp without need for sizing or plying, comprising the steps of:
A yarn which is resistant to shedding and is weavable directly as warp without need for sizing or plying which is made by the steps of:
A method of producing a yarn which is resistant to shedding and is weavable directly as warp without need for sizing or plying, comprising the steps of:
A yarn which is resistant to shedding and is weavable directly as warp without need for sizing or plying which is made by the steps of:
A twisted yarn structure spun from at least one strand of well-aligned staple fibres, said twisted yarn structure having an inner region and an outer region which surrounds the inner region and which defines an outer surface, said yarn structure comprising a group of staple fibres which randomly extend along lengths thereof from said inner region to said outer region and back to said inner region along a length of said yarn structure such that a portion of a length of each staple fibre of said group of staple fibres is bound within said yarn structure by portions of lengths of other staple fibres of said group of staple fibres, and no single staple fibre of said group of staple fibres extends along an entire length thereof on said surface of said yarn structure.
Dependencies are inferred from the claim text.