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High Strength Fabrics Consisting Of Thin Gauge Constant Compression Elastic Fibers

An elastic fiber, thin gauge technology used in the field of high-strength fabrics to solve problems such as loss of comfort in multifilament bundles

Inactive Publication Date: 2015-08-12
LUBRIZOL ADVANCED MATERIALS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These physical properties lead to more bulk in the fabric and the nature of the multifilament tow contributes to a loss of comfort

Method used

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  • High Strength Fabrics Consisting Of Thin Gauge Constant Compression Elastic Fibers
  • High Strength Fabrics Consisting Of Thin Gauge Constant Compression Elastic Fibers
  • High Strength Fabrics Consisting Of Thin Gauge Constant Compression Elastic Fibers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0090] This example is given to illustrate the relative flatness of the fibers of the invention (70 denier) compared to prior art melt-spun TPU fibers (40 denier) and commercially available dry-spun fibers (70 denier). modulus curve.

[0091] The test protocol used was as described above for testing elastic properties. An Instron model 5564 tensiometer with Merlin software was used. The test conditions are 23°C±2°C and 50%±5% humidity. The fiber length of the test sample was 50.0 mm. Four samples were tested and the results are the average of the 4 test samples. The results are shown in Table I.

[0092] Table I

[0093]

[0094] All data above are average values ​​of 4 test samples.

[0095] From the above data, it can be seen that the melt spun fibers of the present invention have a relatively flat modulus curve during the 5th test cycle. The first cycle is usually ignored because it relieves the stress in the fiber.

Embodiment 2

[0097] This example is given to illustrate the breadth of the melt spun fibers of the present invention compared to commercially available dry spun fibers. The width was determined by SEM. The results are shown in Table II.

[0098] Table II

[0099]

[0100] As can be seen, the dry spun fibers have a much larger width and this difference becomes larger with increasing denier.

Embodiment 3

[0102] This example is given to illustrate the improved burst strength of the melt spun TPU fibers of the present invention compared to commercially available dry spun polyurethane fibers. Signel Jersey knit fabrics were prepared from each type of fiber using 70 denier fibers. Burst puncture strength of fabrics was determined according to ASTM D751. The results are shown in Table III. The result is an average of 5 test samples.

[0103] Table III

[0104] test

[0105] Surprisingly, although the melt spun fibers of the present invention do not have a higher tensile strength than dry spun fibers, the burst strength of the melt spun fibers is higher.

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Abstract

Melt spun elastic fibers are disclosed which can be made into garments having a very comfortable feel. The elastic fibers comprise a polyester thermoplastic polyurethane prepared from a reaction mixture comprising a polyisocyanate, a linear hydroxyl terminated polyester intermediate and one or more chain extenders.

Description

technical field [0001] This application is a divisional application of Chinese patent application 201080027998.4. This invention relates to high strength fabrics made from thin gauge constant compression elastic fibers. Garments made from this constant compression elastic fiber have a very comfortable feel for the wearer. Furthermore the garment is resistant to punctures caused by the high-strength fabric made of the elastic fibers. Background technique [0002] In recent years, due to changing lifestyles across the globe, the demand for higher functionality of fabrics beyond and in addition to basic insulation functions has been at a high level. One need for the aforementioned functionality is a fabric with a thin gauge without sacrificing the strength and integrity of the fabric. This thinner gauge fabric allows for lower fill volume, a reduction in "lofty" feel and, in the case of underwear, no external visibility through outer garments. [0003] Synthetic elastic fib...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/08D01F6/70D03D15/283D03D15/56D03D15/593
CPCD01F6/70Y10T428/249921D01D5/16Y10T428/298D03D15/00D04B1/14D04B21/00D01D5/08D02G3/02D02G3/32D02G3/44D03D1/0017D10B2501/02D10B2331/10D10B2401/061D03D15/56
Inventor R·R·韦杜拉J·E·小布莱森M-W·李D·M·菲舍尔C·A·斯普瑞格
Owner LUBRIZOL ADVANCED MATERIALS INC