TEXTILE MATERIAL AND FABRICATION METHOD

Abstract

A woven fabric includes a plurality of warp and weft yarns. The yarn is formed by a combination of extra long staple cotton and Suvin cotton, which is spun together at a low speed on a ring frame. In alternate example embodiments, the yarn is formed by a combination of long staple cotton and Suvin cotton.

Claims

1. A woven fabric formed a plurality of warp and weft yarns, the yarn comprising a combination of extra long staple cotton and Suvin cotton, the cottons being spun together at a low speed on a ring frame.

2. The woven fabric of claim 1, wherein the fabric comprises an 8-end sateen weave structure.

3. The woven fabric of claim 2, wherein the float size is between about 1 millimeter to about 2 millimeters.

4. The woven fabric of claim 1, wherein the extra long staple cotton is blended with Suvin cotton at a ratio of about 85:15.

5. The woven fabric of claim 1, wherein the extra long staple cotton is blended with Suvin cotton at a ratio of about 90:10.

6. The woven fabric of claim 1, wherein the drape coefficient is between about 40% to about 50%.

7. The woven fabric of claim 1, wherein the fabric weighs between about 120-200 grams per square meter.

8. The woven fabric of claim 3, wherein with the thread count of the woven fabric being 600, the fabric weighs about 134 grams per square meter, the drape coefficient is about 42%, the crease recovery value in the warp direction is about 140, and the crease recovery value in the weft direction is about 98.

9. The woven fabric of claim 3, wherein with the thread count of the woven fabric being 800, the fabric weighs about 167 grams per square meter, the drape coefficient is about 43%, the crease recovery value in the warp direction is about 135, and the crease recovery value in the weft direction is about 78.

10. The woven fabric of claim 3, wherein with the thread count of the woven fabric being 1000, the fabric weighs about 190 grams per square meter, the drape coefficient is about 47%, the crease recovery value in the warp direction is about 151, and the crease recovery value in the weft direction is about 81.

11. The woven fabric of claim 3, wherein the fabric is in the form of a bedding product selected from at least one of a sheet, a pillow case, a duvet or duvet cover, a blanket, or a quilt.

12. The woven fabric of claim 1, wherein the fabric comprises a surface index value of between about 2.6 to about 3.6.

13. The woven fabric of claim 12, wherein the fabric comprises a surface index value of between about 2.8 to about 3.0.

14. A woven fabric formed a plurality of warp and weft yarns, the yarn comprising a combination of long staple cotton and Suvin cotton, the cottons being spun together at a low speed on a ring frame, the fabric comprising an 8-end sateen weave structure wherein the long staple cotton is blended with the Suvin cotton at a ratio of between about 85:15:90:10, wherein the drape coefficient is between about 40%-50% and the fabric weighs between about 120-200 grams per square meter, and wherein the float size is between about 1 millimeter to about 2 millimeters.

15. A method of forming a fabric comprising: loading a first cotton on a ring frame; loading a second cotton on a ring frame; spinning the first cotton with the second cotton at a low speed on the ring fame to form a yarn; loading the yarn on a loom; and using the loom to weave the yarn in the warp and weft directions to form the fabric.

16. The method of claim 15, wherein the fabric comprises a weave configuration in the form of an 8-end sateen weave.

17. The woven fabric of claim 16, wherein the first cotton is blended with the second cotton at a ratio of between about 85:15 to about 90:10, wherein the drape coefficient is between about 40% to about 50%, and wherein the fabric weight is between about 120-190 grams per square meter.

18. The method of claim 17, wherein the first cotton comprises extra long staple cotton and the second cotton comprises Suvin cotton.

19. The method of claim 17, wherein the first cotton comprises long staple cotton and the second cotton comprises Suvin cotton.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0014] FIG. 1 is a diagram showing a 2-dimensional representation of an 8 end sateen weave structure according to an example embodiment of the present invention.

[0015] FIG. 2 is a diagram showing a 3-dimensional representation of the 8 end sateen weave structure of FIG. 1.

[0016] FIG. 3 shows a weaving diagram for 8 end sateen weave according to an example embodiment of the present invention.

[0017] FIG. 4 is a table showing the drape coefficient, weight and crease recovery values of known fabrics relative to the fabric of the present invention.

DETAILED DESCRIPTION OF EXAMPLE EMBODIMENTS

[0018] The present invention may be understood more readily by reference to the following detailed description of the invention taken in connection with the accompanying drawing figures, which form a part of this disclosure. It is to be understood that this invention is not limited to the specific devices, methods, conditions or parameters described and/or shown herein, and that the terminology used herein is for the purpose of describing particular embodiments by way of example only and is not intended to be limiting of the claimed invention. Any and all patents and other publications identified in this specification are incorporated by reference as though fully set forth herein.

[0019] Also, as used in the specification including the appended claims, the singular forms “a,” “an,” and “the” include the plural, and reference to a particular numerical value includes at least that particular value, unless the context clearly dictates otherwise. Ranges may be expressed herein as from “about” or “approximately” one particular value and/or to “about” or “approximately” another particular value. When such a range is expressed, another embodiment includes from the one particular value and/or to the other particular value. Similarly, when values are expressed as approximations, by use of the antecedent “about,” it will be understood that the particular value forms another embodiment.

[0020] According to example forms, the present invention relates to a fabric comprising exceptionally soft hand feel and luxurious shine, which maintains its softness and luster after multiple washes. In example applications, the fabric of the present invention is used to produce bedding products including sheets, pillow cases, duvets and duvet covers, blankets, quilts, etc. According to one example form, the present invention relates to a woven cotton fabric formed from a plurality of warp and weft yarns. In example forms, the yarn is in the form of a single ply yarn having a combination of extra long staple (ELS) cotton and Suvin cotton. Generally, the extra long staple cotton and the Suvin cotton are spun together at a low speed on ring frames to form a uniformly smooth single ply yarn. In example forms, spinning the cottons together at a low speed on a ring frame ensures the surface of the resulting single ply yarn stays smooth and flawless. The uniformly smooth single ply yarn is then woven to form a fabric. Preferably, the weave construction is modified to comprise a longer weave float size X ranging from about 1.5 mm to 2 mm (e.g., the gap between two weave stitches—see FIG. 1), and light weight yarn counts, which allow the fabric more breathability and provide maximum comfort during use. In example forms, the float size is generally between about 0.125 millimeters to about 5 millimeters, more preferably between about 0.5 millimeters to about 2.5 millimeters, for example between about 1.5 millimeters to about 2 millimeters according to example embodiments. Generally, the light-weight yarn count is generally between about 60 s to about 150 s and above, and more preferably between about 60 s to about 100 s. In alternate example embodiments, as will be described below, the yarn can be in the form of a single ply yarn having a combination of long staple (LS) cotton and Suvin cotton.

[0021] As depicted in FIGS. 1-3, the weave structure for forming the fabric is in the form of an 8 end sateen weave. Preferably, the 8 end sateen weave makes the fabric more breathable with less interlacement, thereby resulting in a drastic improvement in the fabric handle, drape and look. For example, in example embodiments the 8 end sateen weave comprises a float size X of between about 1.5 millimeters to about 2 millimeters. In addition, finer yarn counts are utilized rather than the conventional coarser yarn counts. For example, a known or conventional 600 thread count (TC), 5 end sateen woven with construction 80 s in warp and 100 s in weft, and 216 ends per inch and 92/4 Px insertion px per inch has a weight of about 163 grams per square meter, which is substantially more than the weight (e.g., grams per square meter) of the present invention, for example, which is about 134 grams per meter according to some example forms (as will be described below).

[0022] According to example forms, the drape coefficient and crease recovery of the fabric described herein is substantially superior to that of known fabrics. For example, the drape of fabric is a term used to describe the way a fabric hangs under its own weight. According to example embodiments, the drape of the fabric (or drapeability) is measured by a drapemeter or drape tester, for example, which is outlined in Indian Standards Institution “Method for Assessment of Fabric Drape” by Manak Bhavan (IS: 8357 (1977)). In some example forms, the drape plays an important bearing on how good a garment looks in use. The draping qualities required from a fabric will differ completely depending on its end use, and thus, a given value for drape cannot be classified as either good or bad. Generally, knitted fabrics are relatively floppy and garments made from them will tend to follow the body contours. However, woven fabrics are relatively stiff when compared with knitted fabrics so they are used in tailored clothing where the fabric hangs away from the body and disguises its contours. The measurement of a fabric's drape is meant to assess its ability to do this and also its ability to hang in graceful curves. Typically, the higher the fabric drape coefficient, the stiffer the fabric and thereby makes its fabric drapability lower. As shown in FIG. 4, the weight (GSM) and drape coefficient (DC) of the presently claimed fabric is compared to the weight (GSM) and drape coefficient (DC) of typical fabric. The typical fabric is provided with a 5 end sateen weave, for example, wherein a 600 thread count fabric comprises a construction of 80 s×100 s/216×94/4 and a GSM (grams per square meter) value of 163, wherein an 800 thread count fabric comprises a construction of 100 s×120 s/236×96/6 and a GSM value of 172, and wherein a 1000 thread count fabric comprises a construction of 100 s×120 s/240×95/8 and a GSM value of 215. The fabric of the presently claimed invention is provided with an 8 end sateen weave, for example, wherein a 600 thread count fabric comprises a construction of 100 s×120 s/232 ×92/4 and a GSM value of 134, wherein a 800 thread count fabric comprises a construction of 100 s×120 s/226×96/6 and a GSM value of 167, and wherein a 1000 thread count fabric comprises a construction of 100 s×135 s/232×96/8 and a GSM value of 190. For 600 thread count fabric, the drape coefficient for typical fabric is 73.64% whereas the drape coefficient for the fabric of the presently claimed invention is 42.03%. For 800 thread count fabric, the drape coefficient for typical fabric is 83.32% whereas the drape coefficient for the fabric of the presently claimed invention is 43.08%. And, for 1000 thread count fabric, the drape coefficient for typical fabric is 95.50% whereas the drape coefficient for the fabric of the present invention is 47.06%. Generally, in most example embodiments, the fabric of the present invention will comprise a drape coefficient within the range of between about 40%-50%, for example which is generally between about 25%-55% less than that of known fabrics.

[0023] Furthermore, as depicted in FIG. 4, the crease recovery of the fabric of the presently claimed invention is far superior to known fabrics. For example, crease recovery is a ratio of a projected pleating fold area formed by a piece of fabric after draping under its own weight relative to the original area of the same piece of fabric without draping. Thus, more or less, crease recovery is the ability of a creased or wrinkled fabric to recover its original shape over time. In example embodiments, for a 600 thread count fabric, the crease recovery values for conventional fabric is 67 in the warp direction and 111 in the weft direction, and the crease recovery values for the fabric of the presently claimed invention is 140 in the warp direction and 98 in the weft direction. For an 800 thread count fabric, the crease recovery values for conventional fabric is 89 in the warp direction and 133 in the weft direction, and the crease recovery values for the presently claimed invention is 135 in the warp direction and 78 in the weft direction. For 1000 thread count fabric, the crease recovery values for conventional fabric is 32 in the warp direction and 85 in the weft direction, and the crease recovery values for the fabric of the presently claimed invention is 151 in the warp direction and 81 in the weft direction.

[0024] According to example forms, the fabric of the present invention generally comprises an 8 end sateen weave structure. The warp count is generally about 100 s for fabrics of 600, 800 and 1000 thread counts. A lower thread count below 600 is achievable; however, it is generally with a PPI (picks per inch) of 90 and above. In example forms, the extra long staple (ELS) cotton is spun together with Suvin cotton at a ratio of between about 85:15 to about 90:10 at a low speed on a ring frame. In alternate embodiments, as will be described below, the long staple (LS) cotton is spun together with Suvin cotton at a ratio of between about 85:15 to about 90:10 at a low speed on a ring frame. Generally, the weight of the fabric (e.g., GSM) of the present invention is generally between 120-200 g/m.sup.2. The weave float size×can generally be less than 1 mm up to about 2 mm. In some example forms, the fabric of the present invention can be a multi pick insertion fabric where the picks are generally to be in multiples of 90 pc. For example, for 600 thread count fabric, the picks are 92/4, for 800 thread count fabric, the picks are 94/6, and for 1000 thread count fabric, the picks are 96/8 (see FIG. 4). In some example forms, the weft is a multi pick insertion that runs parallel on the loom apparatus. For example, for 600 thread count fabric, the weaver of the fabric can weave up to 236 ends per inch (e.g., warp density per inch) and the remaining (e.g., 600−236=368) thread is inserted by multi-pick insertion (e.g., 368 pick with 4 pick insertion=368/4=92×4). Preferably, the fabric of the present invention is between about 2-25% lighter than known fabrics. According to example embodiments, the formula for calculating fabric weight is defined by: fabric weight (GSM)=(EPI/warp count+PPI/weft count)×25.

[0025] In another example embodiment, the present invention relates to a method of forming a fabric comprising providing a first cotton; providing a second cotton; spinning the first cotton with the second cotton at a low speed on a ring frame to form a yarn; providing a loom; and using the loom to weave the yarn in the warp and weft directions to form the fabric. According to some example forms, the fabric comprises a weave configuration in the form of an 8 end sateen weave. According to example embodiments, the first cotton comprises extra long staple cotton (ELS) and the second cotton comprises Suvin cotton. Generally, the weave float size is between about 1 millimeter to about 2 millimeters.

[0026] Optionally, the method of forming a fabric can comprise loading a first cotton on a ring frame; loading a second cotton on a ring frame; spinning the first cotton with the second cotton at a low speed on the ring fame to form a yarn; loading the yarn on a loom; and using the loom to weave the yarn in the warp and weft directions to form the fabric. In example embodiments, the fabric comprises a weave configuration in the form of an 8-end sateen weave. In example embodiments, the first cotton is blended with the second cotton at a ratio of between about 85:15 to about 90:10, wherein the drape coefficient is between about 40% to about 50%, and wherein the fabric weight is between about 120-190 grams per square meter. In example embodiments, the first cotton comprises extra long staple cotton and the second cotton comprises Suvin cotton. Optionally, the first cotton comprises long staple cotton and the second cotton comprises Suvin cotton.

[0027] In further example embodiments, the present invention includes one or more bedding products including sheets, pillow cases, duvets and duvet covers, blankets, quilts, etc., fabricated from a fabric as disclosed herein.

[0028] In yet another example embodiment, the fabric of the present invention comprises a surface index value that is between about 15% to about 20% better than known conventional fabrics. The surface index of the fabric describes the smoothness or hairiness of the fabric. For example, according to one method, a camera records an image of a cross-section of the textile in which the number and size of the protruding fibers in the fabric are calculated. The surface index can be used to judge, for example, whether a textile will scratch or feel too smooth. In example embodiments, the index is determined by the number and length of the fiber ends protruding from the fabric's bulk. Typically, the surface index value comprises a range of between about 2-15, where 2 is generally a substantially smooth feel and wherein 15 is generally a substantially rough feel. According to example embodiments, the surface index value of the fabric of the present invention is between about 2.4 to about 4.0, for example between about 2.6 to about 3.6, for example between about 2.8 to about 3.0 according to one example embodiment.

[0029] According to another example embodiment of the present invention, at least one of the cotton materials can be modified or varied according to additional example embodiments of the present invention. For example, rather than the extra long staple (ELS) cotton being spun together with Suvin cotton at a ratio of between about 85:15 to about 90:10, long staple cotton (LS) can be spun together with Suvin cotton at a ratio of between about 85:15 to about 90:10. For example, in a similar process as described above with respect to the yarn comprising extra long staple cotton (ELS) and Suvin cotton, the same process, techniques, etc. can similarly be applied to the yarn formed from long staple cotton (LS) and Suvin cotton. Accordingly, one or more woven fabrics can be formed from yarn comprising long staple cotton (LS) and Suvin cotton.

[0030] Furthermore, with respect to the method of forming a fabric as described above, the first cotton can comprise long staple cotton (LS) and the second cotton can comprise the Suvin cotton. Accordingly, the method of forming a fabric can comprise providing a first cotton; providing a second cotton; spinning the first cotton with the second cotton at a low speed on a ring frame to form a yarn; providing a loom; and using the loom to weave the yarn in the warp and weft directions to form the fabric. In example embodiments, the fabric similarly comprises a weave configuration in the form of an 8 end sateen weave. As mentioned above, the first cotton comprises long staple cotton (LS) and the second cotton comprises Suvin cotton. Generally, the weave float size is between about 1 millimeter to about 2 millimeters.

[0031] In yet another example embodiment, the fabric of the present invention can be formed from any combination of Suvin cotton, long staple cotton (LS) and extra long staple cotton (ELS). For example, according to example embodiments, for example, rather than combining the Suvin cotton with either of the long staple cotton (LS) or extra long staple cotton (ELS), the long staple cotton (LS) can be combined with the extra long staple cotton (ELS), for example, which is further used to form the fabric. Optionally, a combination of all three cottons can be used to form the fabric.

[0032] While the invention has been described with reference to preferred and example embodiments, it will be understood by those skilled in the art that a variety of modifications, additions and deletions are within the scope of the invention, as defined by the following claims.