Textiles: spinning – twisting – and twining – Strand structure – Chenille
Reexamination Certificate
1999-06-15
2003-07-08
Calvert, John J. (Department: 3765)
Textiles: spinning, twisting, and twining
Strand structure
Chenille
C057S024000
Reexamination Certificate
active
06588192
ABSTRACT:
FIELD OF THE INVENTION
The present invention is directed to a new chenille yarn and a method of making the same. The chenille yarn may be used on conventional weaving equipment, including air jet and water jet weaving machines, to produce fabrics having superior abrasion resistance and improved hand. The present invention is also directed to a method of making fabrics containing the chenille yarn, and various uses for the fabrics, especially as residential upholstery fabrics, decorative throws, contract fabrics, automotive fabrics, and bedding fabrics for use in the home.
BACKGROUND OF THE INVENTION
Conventional chenille yarns are used in a variety of fabrics to produce a simulated pile on a surface of the fabric. Attempts have been made to improve the abrasion resistance and to decrease the amount of pile loss associated with chenille yarns. Early attempts to improve the abrasion resistance of chenille yarns, such as disclosed in U.S. Pat. No. 3,969,881, utilized mechanical means, such as twisting of one or more core yarns, to lock pile or effect yarns in place; however, the resulting chenille yarns had less than acceptable abrasion resistance. More recently, adhesive means have been utilized to secure pile or effect yarns to the chenille yarn core. U.S. Pat. Nos. 5,009,946 and 5,651,168 disclose chenille yarns comprising one or more multifilament, continuous, low-melting binder yarns in the core of the chenille yarn, which adhesively secure pile or effect yarns to the core. By incorporating one or more multifilament, continuous, low-melting binder yarns in the core of the chenille yarn, and subsequently melting the binder yarn, a chenille yarn having better abrasion resistance and decreased pile loss is produced.
Although significant improvements have been made with chenille yarns, conventional chenille yarns, such as those disclosed in the above-referenced patents, still have several shortcomings. Most conventional chenille yarns can only be used on relatively low speed weaving machines, such as shuttle or Rapier looms. Attempts have been made to use conventional chenille yarns on high speed weaving machines, such as air jet and water jet weaving equipment; however, as the chenille yarn is unwound from cones, the chenille yarn has a tendency to curl, which results in weave inefficiencies such that air jet and water jet weaving is virtually impossible. It is believed that the tendency of conventional chenille yarns to curl results from a curved orientation memory in the yarn due to storage and/or heat treatment of the yarn while wound on a cone. For example, if the chenille yarn is on a cone and subjected to a heat treatment to melt a binder core yarn, the chenille yarn wants to retain the curved orientation that it has on the cone. Also, conventional chenille yarn experiences significant tuft or pile loss during the weaving process because the effect yarn is not adequately secured to the yarn core.
Other conventional chenille fabrics require post-weaving finishing processes in order to secure the pile or effect yarn to the chenille core and/or prepare the fabric for consumer use. For example, the chenille fabrics disclosed in U.S. Pat. No. 5,651,168 are prepared from chenille yarns which must be heatset after weaving in order to melt a binder fiber in the core of the chenille yarns. Even with one or more finishing processes, conventional chenille fabrics must be hand washed to prevent pile loss during washing or dry cleaning. A commercially available machine washable or dry cleanable chenille fabric coming directly off of a weaving machine does not exist, especially in the area of bedding products such as blankets and quilts.
There exists a need in the art for a chenille yarn, which provides exceptional abrasion resistance and decreased pile loss, and may be used on all types of weaving equipment, including water and air jet weaving machines. There also exists a need in the art for chenille fabrics, which are ready for consumer use and machine washable and dry cleanable, without the need for post-weaving finishing processes as in conventional chenille fabrics.
SUMMARY OF THE INVENTION
The present invention is directed to novel chenille yarns having superior abrasion resistance and decreased pile loss. The chenille yarns may be used on shuttle looms, as well as, high speed weaving machines, such as water and air jet looms. The chenille yarns may be used to make chenille fabrics for a variety of fabric applications. In one embodiment of the present invention, the chenille yarn is woven into fabrics for use as bedding products, such as blankets, decorative throws, quilts and blankets. The bedding products are machine washable or dry cleanable.
The present invention is also directed to methods of making novel chenille yarns and fabrics containing the same. In one embodiment of the present invention, the method comprises forming a core component of the chenille yarn by intimately blending a high-melting staple fiber and a low-melting staple binder fiber to form the core component. In a second embodiment of the present invention, a method comprises a heating and cooling step prior to weaving, wherein a low-melting core component of the chenille yarn melts to secure the pile or effect yarn to the chenille core. In a further embodiment of the present invention, the method comprises weaving a chenille fabric on a water or air jet loom using the chenille yarn of the present invention.
The chenille yarns of the present invention satisfy the need for a multi-purpose chenille yarn, capable of being used on any type of weaving equipment. The chenille fabrics of the present invention satisfy the need for a machine washable or dry cleanable fabric having exceptional fabric softness and feel. A detailed description of the chenille yarns and fabrics of the present invention and their various applications is provided below.
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Calvert John J.
Chatham, Inc.
Hurley Shaun R
Merchant & Gould LLC
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