Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Rod – strand – filament or fiber
Patent
1996-10-18
2000-01-18
McCamish, Marion E.
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Rod, strand, filament or fiber
57225, 57244, 57207, 57210, 66169R, 87 2, 87 3, 87 13, 428364, 428374, 428377, 428394, 442184, 442190, 442197, 442306, 442310, D02G 300
Patent
active
06015618&
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
This invention relates to a composite yarn comprised of a chain stitch yarn and at least one inlay yarn and a manufacturing method thereof. More particularly, this invention relates to a composite yarn having a novel structure which can be obtained by using a warp knitting machine and remarkable features which cannot be obtained in conventional composite yarns, but can be obtained by the above-mentioned novel structure, and a manufacturing method thereof.
PRIOR ART
Various types of composite yarn have been known. In general, composite yarn is divided into two types, and one type of composite yarn is a yarn composed of fibers constituted with at least two components and another type of composite yarn is a yarn in which at least two yarns constituting the composite yarn are combined with each other. The composite yarn of the present invention is of the latter type.
A typical yarn of the latter composite yarn type is a twisted yarn. The twisted yarn has superior tensile strength and abrasion resistance, compared with a single yarn, and a beautiful appearance. Accordingly, the twisted yarn can be widely used in a woven fabric, a knitted fabric, a rope or the like. However, the twisted yarn is generally a non-stretchable yarn. For the sake of the above feature, when a final product having elastically stretchable property (hereinafter, referred as stretchability) is required, a cover yarn manufactured by using a stretchable yarn such as a spandex yarn as a core yarn and wrapping it with a non-stretchable yarn such as a spun yarn, a textured yarn or the like, in one layer or two layers, is used.
However, since the other yarn is wrapped about the core yarn in the covering yarn, the appearance of the covering yarn becomes to dull. Accordingly, the covering yarn cannot be used in the applications of a knitted fabric or a won en fabric in which luster is required. However, there is a big demand for a yarn having stretchability and luster. Accordingly, it has been attempted to apply a luster to the covering yarn by using a multifilament as the non-stretchable yarn wrapping the core yarn. However, when the covering yarn prepared by using a stretchable yarn as the core yarn and wrapping the non-stretchable multifilament around the core yarn shrinks due to shrinkage of the core yarn, the multifilament becomes loose on the core yarn due to an inferior holding ability of the multifilament on the core yarn. As a result, when this covering yarn is used in a successive process, i.e., a knitting process or a weaving process, the covering yarn is caught on a yarn guide or the like and many breakages of the yarn are generated, and thus it becomes impossible to obtain a knitted fabric or a woven fabric having superior quality. Further, a final product made from the knitted fabric or the woven fabric prepared by using this covering yarn has a tendency to generate snagging on the fabric in use and thus those fabrics have inferior utility. Accordingly, a composite yarn which has as broad a usefulness as a yarn having superior stretchability and luster has not yet been provided.
Further, the covering yarn can be used as a pattern yarn of an embroidery lace. When the embroidery lace is used for a lady's underwear, it is required that a ground cloth and a pattern portion embroidered on the ground cloth have the substantially same stretchability to improve the fitting of the embroidery lace to a human body. Accordingly, a stretchable warp knitted fabric such as a power net has been used as the ground cloth in a conventional embroidery lace, and a yarn with stretchability which is controlled to a predetermined value in an embroidering process, but is generated by treatment in a successive dying and finishing process has been used as an embroidery yarn.
The pattern in the embroidery lace is essentially formed by lock-stitch-sewing two embroidery yarns into the ground cloth as a face yarn and a back yarn. If the embroidery yarn has stretchability, it is impossible to form a loop in the lock-stitch-sewing process. Accord
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patent: 4005569 (1977-02-01), Corbiere
patent: 4173131 (1979-11-01), Pendergrass et al.
patent: 4433493 (1984-02-01), Poisson
patent: 4750324 (1988-06-01), Tochacek et al.
patent: 4912781 (1990-04-01), Robins et al.
Firster Co., Ltd.
Gray J. M.
McCamish Marion E.
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