An elastic band that reduces linear pressure as temperature increases and its manufacturing method

Abstract

This invention provides an elastic band that reduces linear pressure as temperature rises. It comprises multiple fabric loop areas, each including nine warp rows and four weft rows. In one loop area, the first warp row and four weft rows are woven using a weft-over-weft weaving technique; the second, fourth, sixth, and eighth warp rows and four weft rows are woven using a three-weft-below-one-weft weaving technique; the third, fifth, seventh, and ninth warp rows and four weft rows are woven using a three-weft-below-one-weft weaving technique; the first warp row is made of spandex-covered yarn formed by pre-shrinking and twisting after heat stress relaxation; the second to ninth warp rows are made of polyester yarn, and the four weft rows are also made of polyester yarn. This elastic band reduces pressure on the body under rising temperatures, which is beneficial for heat and moisture exchange and improves comfort.

Description

Technical Field

[0001] This invention relates to the field of textile industry technology, and in particular to an elastic band that reduces thread pressure as temperature rises and its manufacturing method. Background Technology

[0002] Elastic bands circulating in domestic and international markets are generally ordinary flat weave bands without special functions. When used in sports and fitness, especially when in contact with the human body and when the body is generating a lot of heat and sweat, they do not have good heat and moisture conduction capabilities, and they dry and dissipate heat slowly, seriously affecting the comfort of the human body, causing a wet-stick effect, and affecting the body's functional performance and athletic performance.

[0003] If an elastic band is designed so that when the human body generates a lot of heat and sweats, the fabric stretches by a certain amount, the elastic band still has a fastening effect, the linear pressure of the fabric on the human body will decrease, the gap between the human body and the fabric will increase, the fabric will dissipate moisture and heat faster, the thermal and moisture comfort and pressure comfort of the fabric will be improved, the adhesive effect will be reduced, which will help improve the human body's motor function and improve athletic performance. Summary of the Invention

[0004] To address the technical problems of existing elastic bands lacking good heat and moisture conduction, and being slow to dry and dissipate heat, severely impacting human comfort, this invention provides an elastic band whose linear pressure decreases with increasing temperature, and a manufacturing method thereof. The technical solution is as follows:

[0005] One object of the present invention is to provide an elastic band that reduces linear pressure as the temperature rises, the elastic band comprising multiple fabric loop areas, each fabric loop area comprising: nine rows of warp yarns and four rows of weft yarns;

[0006] In a fabric cycle area, the first column of warp yarns and the four rows of weft yarns are woven using a weft yarn up-down weaving technique;

[0007] The second, fourth, sixth, and eighth warp yarns, together with the four rows of weft yarns, are woven using a weaving technique with three weft yarns on the bottom and one weft yarn on the top.

[0008] The third, fifth, seventh, and ninth warp yarns, together with the four rows of weft yarns, are woven using a weaving technique with three weft yarns on top and one weft yarn on the bottom.

[0009] The first warp yarn is made of spandex that has been pre-shrinked and shaped by thermal stress relaxation and twisted together, with the spandex stretch ratio between 1:5 and 6.

[0010] The parameters for pre-shrinking and setting of spandex under thermal stress relaxation are as follows: setting temperature is 60℃~65℃, and setting time is 25min-30min.

[0011] The second to ninth warp yarns are made of polyester, and the four weft yarns are also made of polyester.

[0012] In a preferred embodiment, the first warp yarn is a spandex-covered yarn formed by twisting two or four 280D spandex yarns together, with a twist of 80-100 twists / m.

[0013] In a preferred embodiment, the parameters of the first warp yarn are: 560D spandex / maximum stretch ratio 2.6 times / front-wrap 75D polyester / back-wrap 75D polyester spandex-covered yarn;

[0014] Alternatively, the parameters for the first warp yarn can be: 1120D spandex / maximum stretch ratio 2.6 times / front-wrap 75D polyester / back-wrap 75D polyester spandex-covered yarn.

[0015] In a preferred embodiment, the second to ninth warp yarns are made of one or two polyester yarns with a linear density of 150D / 48f.

[0016] In a preferred embodiment, the four weft yarns are made of one or two polyester yarns with a linear density of 150D / 48f.

[0017] In a preferred embodiment, the fabric parameters of the elastic band are: warp density of 78-82 yarns / 10mm; weft density of 20-22 yarns / 10mm; and room temperature stretch ratio of 1:2.2.

[0018] Another object of the present invention is to provide a method for manufacturing an elastic band that reduces linear pressure as temperature increases, the method comprising the following steps:

[0019] S1. In each fabric repeat area, nine rows of warp yarns are arranged;

[0020] The first warp yarn is made of spandex that has been pre-shrinked and shaped by thermal stress relaxation and twisted together, with the spandex stretch ratio between 1:5 and 6.

[0021] The parameters for pre-shrinking and setting of spandex thermal stress relaxation are: setting temperature of 60℃~65℃, setting time of 25min-30min;

[0022] The second to ninth warp yarns are made of polyester filament;

[0023] S2. In each fabric cycle area, four rows of weft yarns are introduced. The first column of warp yarns and the four rows of weft yarns are woven using a weft yarn weaving process of one up and one down.

[0024] S3. In each fabric cycle area, four rows of weft yarns are introduced. The second, fourth, sixth and eighth warp yarns and the four rows of weft yarns are woven with a weaving process of three weft yarns on the bottom and one weft yarn on the top.

[0025] S4. In each fabric cycle area, four rows of weft yarns are introduced. The third, fifth, seventh and ninth warp yarns are woven with the four rows of weft yarns using a weaving technique with three weft yarns on top and one weft yarn on the bottom.

[0026] In a preferred embodiment, the first warp yarn is a spandex-covered yarn formed by twisting two or four 280D spandex yarns together, with a twist of 80-100 twists / m.

[0027] The parameters of the first warp yarn are: 560D spandex / maximum stretch ratio 2.6 times / front-wrap 75D polyester / back-wrap 75D polyester spandex-covered yarn;

[0028] Alternatively, the parameters for the first warp yarn can be: 1120D spandex / maximum stretch ratio 2.6 times / front-wrap 75D polyester / back-wrap 75D polyester spandex-covered yarn.

[0029] In a preferred embodiment, the second to ninth warp yarns are made of one or two polyester yarns with a linear density of 150D / 48f; the four weft yarns are made of one or two polyester yarns with a linear density of 150D / 48f.

[0030] In a preferred embodiment, the fabric parameters of the manufactured elastic band are as follows: warp density: 78-82 threads / 10mm; weft density: 20-22 threads / 10mm; room temperature stretch ratio: 1:2.2.

[0031] The beneficial effects of the technical solutions provided in the embodiments of the present invention include at least the following:

[0032] This invention provides an elastic band whose linear pressure decreases with increasing temperature and its manufacturing method. At room temperature, the elastic band's elongation ratio meets the lower limit requirement of the national standard for woven elastic bands. As temperature increases, the elongation ratio increases, reaching the upper limit requirement of the national standard for woven elastic bands. The elastic band's tightening effect remains intact regardless of temperature changes. Simultaneously, the loosening of the elastic band's structure reduces the pressure on the human body under elevated temperatures, facilitating heat and moisture exchange, improving comfort, and enhancing human motor function. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a front view of a portion of the fabric circulation area of ​​an elastic band that reduces linear pressure as temperature rises, according to the present invention.

[0035] Figure 2 This is a front view of a fabric circulation area of ​​an elastic band that reduces linear pressure as the temperature rises, according to the present invention. Detailed Implementation

[0036] The technical solution of the present invention will now be described with reference to the accompanying drawings.

[0037] In embodiments of the present invention, words such as "exemplarily," "for example," etc., are used to indicate that something is an example, illustration, or description. Any embodiment or design described as "exemplary" in the present invention should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of the word "exemplary" is intended to present the concept in a concrete manner. Furthermore, in embodiments of the present invention, the meaning expressed by "and / or" can be both, or either one.

[0038] To make the technical problems, technical solutions and advantages of the present invention clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0039] Combination Figure 1 According to an embodiment of the present invention, an elastic band with decreasing linear pressure as temperature increases is provided. The elastic band has a woven fabric structure including multiple fabric loop regions Q. One fabric loop region Q represents a complete loop of the elastic band fabric structure.

[0040] like Figure 2 As shown, each fabric repeat area Q includes nine rows of warp yarns and four rows of weft yarns. The nine rows of warp yarns are: warp yarn 1, warp yarn 2, warp yarn 3, warp yarn 4, warp yarn 5, warp yarn 6, warp yarn 7, warp yarn 8, and warp yarn 9.

[0041] The four rows of weft yarns are: the first row of weft yarn I, the second row of weft yarn II, the third row of weft yarn III, and the fourth row of weft yarn IV.

[0042] Nine rows of warp yarns and four rows of weft yarns form a total of 36 warp and weft interlacing points. Figure 2 The "J" in the middle indicates the warp float, meaning the warp yarn is located above the warp and weft interlacing point on the front side of the elastic band fabric. Figure 2 The middle W is the weft float, meaning the weft yarn is located above the warp and weft interlacing point on the front side of the elastic band fabric.

[0043] In a fabric cycle area Q, the first warp yarn 1 and the four weft yarns (first weft yarn I, second weft yarn II, third weft yarn III and fourth weft yarn IV) are woven using a weft yarn one-up-one-down weaving process.

[0044] In a fabric cycle area Q, the second warp yarn 2, the fourth warp yarn 4, the sixth warp yarn 6 and the eighth warp yarn 8 are woven with four rows of weft yarns (first row of weft yarn I, second row of weft yarn II, third row of weft yarn III and fourth row of weft yarn IV) using a weaving process with three weft yarns on the bottom and one weft yarn on the top.

[0045] In a fabric cycle area Q, the third warp yarn 3, the fifth warp yarn 5, the seventh warp yarn 7 and the ninth warp yarn 9 are woven with four rows of weft yarns (first row of weft yarn I, second row of weft yarn II, third row of weft yarn III and fourth row of weft yarn IV) using a weaving process with three weft yarns on top and one weft yarn on the bottom.

[0046] According to an embodiment of the present invention, the first warp yarn 1 is a spandex-covered yarn formed by combining and twisting spandex that has undergone heat stress relaxation pre-shrinking and setting, with the spandex stretch ratio between 1:5 and 6. The first warp yarn 1 (spandex-covered yarn) provides elasticity for the elastic band.

[0047] The parameters for pre-shrinking and setting of spandex under thermal stress relaxation are: setting temperature of 60℃~65℃, setting time of 25min-30min.

[0048] Specifically, due to excessive internal stress accumulation during the manufacturing process of spandex, it feels too stiff, resulting in poor winding and forming of the bobbin, which is detrimental to covering yarn and weaving. This invention places the manufactured spandex rolls into an oven for thermal stress relaxation and pre-shrinking, resulting in a softer feel and better winding.

[0049] Because spandex has a relatively fine linear density, it does not meet the requirements for use. Therefore, the first warp yarn 1 (spandex-covered yarn) of this invention is made by twisting two or four 280D spandex yarns (spandex yarns that have been pre-shrinked and shaped by thermal stress relaxation) together, with a twist of 80-100 twists / m, in order to improve the strength and elongation stability of the first warp yarn 1 (spandex-covered yarn).

[0050] In one embodiment, the parameters of the first warp yarn 1 (spandex-covered yarn) are: 560D spandex / maximum stretch ratio 2.6 times / front-covered 75D polyester / back-covered 75D polyester (280D×2 / 260 / 75D / 75D) spandex-covered yarn, that is, two 280D spandex yarns are twisted together to form a core yarn to form a spandex-covered yarn. The first warp yarn 1 (spandex-covered yarn) cannot have a web.

[0051] In other embodiments, the parameters of the first warp yarn 1 (spandex-covered yarn) are: 1120D spandex / maximum stretch ratio 2.6 times / front-covered 75D polyester / back-covered 75D polyester (280D×4 / 260 / 150D / 150D) spandex-covered yarn, that is, four 280D spandex yarns are twisted together to form a core to form a spandex-covered yarn. The first warp yarn 1 (spandex-covered yarn) cannot have a web.

[0052] The second warp yarns 2 to the ninth warp yarns 9 (second warp yarn 2, third warp yarn 3, fourth warp yarn 4, fifth warp yarn 5, sixth warp yarn 6, seventh warp yarn 7, eighth warp yarn 8 and ninth warp yarn 9) are made of polyester yarn, and the four weft yarns (first weft yarn I, second weft yarn II, third weft yarn III and fourth weft yarn IV) are made of polyester yarn.

[0053] Furthermore, the second warp yarns 2 to the ninth warp yarns 9 (second warp yarns 2, third warp yarns 3, fourth warp yarns 4, fifth warp yarns 5, sixth warp yarns 6, seventh warp yarns 7, eighth warp yarns 8 and ninth warp yarns 9) use one or two polyester yarns with a linear density of 150D / 48f.

[0054] The four weft yarns (first weft yarn I, second weft yarn II, third weft yarn III and fourth weft yarn IV) use one or two polyester yarns with a linear density of 150D / 48f.

[0055] According to an embodiment of the present invention, the fabric parameters of the elastic band are as follows: warp density: 78-82 threads / 10mm; weft density: 20-22 threads / 10mm; room temperature stretch ratio: 1:2.2 (original length: maximum stretch length).

[0056] According to an embodiment of the present invention, a method for manufacturing an elastic band that reduces linear pressure as temperature increases is provided, comprising the following steps:

[0057] Step S1: In each fabric repeat area Q, arrange nine rows of warp yarns (first row of warp yarn 1, second row of warp yarn 2, third row of warp yarn 3, fourth row of warp yarn 4, fifth row of warp yarn 5, sixth row of warp yarn 6, seventh row of warp yarn 7, eighth row of warp yarn 8 and ninth row of warp yarn 9).

[0058] The first warp yarn 1 is a spandex-covered yarn formed by combining and twisting spandex that has been pre-shrinked and set by heat stress relaxation. The spandex stretch ratio is between 1:5 and 6. The first warp yarn 1 (spandex-covered yarn) provides elasticity for the manufactured elastic band.

[0059] The parameters for pre-shrinking and setting of spandex under thermal stress relaxation are: setting temperature of 60℃~65℃, setting time of 25min-30min.

[0060] Because the linear density of spandex is too fine to meet the requirements, the first warp yarn 1 (spandex-covered yarn) is made by twisting two or four 280D spandex yarns (spandex that has been pre-shrinked and shaped by thermal stress relaxation) together, with a twist of 80-100 twists / m.

[0061] In one embodiment, the parameters of the first warp yarn 1 (spandex-covered yarn) are: 560D spandex / maximum stretch ratio 2.6 times / front-covered 75D polyester / back-covered 75D polyester (280D×2 / 260 / 75D / 75D) spandex-covered yarn, that is, two 280D spandex yarns are twisted together to form a yarn core to form a spandex-covered yarn.

[0062] In other embodiments, the parameters of the first warp yarn 1 (spandex-covered yarn) are: 1120D spandex / maximum stretch ratio 2.6 times / front wrap 75D polyester / back wrap 75D polyester (280D×4 / 260 / 150D / 150D) spandex-covered yarn, that is, four 280D spandex yarns are twisted together to form a yarn core to form a spandex-covered yarn.

[0063] The second warp yarns 2 to the ninth warp yarns 9 (second warp yarn 2, third warp yarn 3, fourth warp yarn 4, fifth warp yarn 5, sixth warp yarn 6, seventh warp yarn 7, eighth warp yarn 8 and ninth warp yarn 9) are made of polyester yarn.

[0064] Furthermore, the second warp yarns 2 to the ninth warp yarns 9 (second warp yarns 2, third warp yarns 3, fourth warp yarns 4, fifth warp yarns 5, sixth warp yarns 6, seventh warp yarns 7, eighth warp yarns 8 and ninth warp yarns 9) use one or two polyester yarns with a linear density of 150D / 48f.

[0065] Step S2: In each fabric cycle area Q, four rows of weft yarns (first row of weft yarn I, second row of weft yarn II, third row of weft yarn III and fourth row of weft yarn IV) are introduced. The first column of warp yarns 1 and the four rows of weft yarns (first row of weft yarn I, second row of weft yarn II, third row of weft yarn III and fourth row of weft yarn IV) are woven using a weft yarn one-up-one-down weaving process.

[0066] Step S3: In each fabric cycle area Q, introduce four rows of weft yarns (first row of weft yarn I, second row of weft yarn II, third row of weft yarn III, and fourth row of weft yarn IV). The second column of warp yarns 2, the fourth column of warp yarns 4, the sixth column of warp yarns 6, and the eighth column of warp yarns 8 are woven with the four rows of weft yarns (first row of weft yarn I, second row of weft yarn II, third row of weft yarn III, and fourth row of weft yarn IV) using a weaving process with three weft yarns on the bottom and one weft yarn on the top.

[0067] Step S4: In each fabric cycle area, introduce four rows of weft yarns (first row of weft yarn I, second row of weft yarn II, third row of weft yarn III, and fourth row of weft yarn IV). The third column of warp yarns 3, the fifth column of warp yarns 5, the seventh column of warp yarns 7, and the ninth column of warp yarns 9 are woven with the four rows of weft yarns (first row of weft yarn I, second row of weft yarn II, third row of weft yarn III, and fourth row of weft yarn IV) using a weaving process with three weft yarns on top and one weft yarn on the bottom.

[0068] The four weft yarns (first weft yarn I, second weft yarn II, third weft yarn III, and fourth weft yarn IV) are made of polyester yarn.

[0069] Furthermore, the four weft yarns (first weft yarn I, second weft yarn II, third weft yarn III and fourth weft yarn IV) use one or two polyester yarns with a linear density of 150D / 48f.

[0070] According to an embodiment of the present invention, the fabric parameters of the manufactured elastic band are as follows: warp density: 78-82 threads / 10mm; weft density: 20-22 threads / 10mm; room temperature stretch ratio: 1:2.2.

[0071] Example 1.

[0072] In this embodiment, in each fabric cycle area Q, the first warp yarn 1 (spandex-covered yarn) is formed by twisting two 280D spandex yarns together, with a twist of 80 twists / m, to improve the strength and elongation stability of the first warp yarn 1 (spandex-covered yarn). The 280D spandex is pre-shrinked and set by thermal stress relaxation, with a stretch ratio of 1:5.

[0073] The parameters for heat stress relaxation pre-shrinking and setting of 280D spandex are: setting temperature of 60℃ and setting time of 30min.

[0074] In this embodiment, the parameters of the first warp yarn 1 (spandex-covered yarn) are: 560D spandex / maximum stretch ratio 2.6 times / front-covered 75D polyester / back-covered 75D polyester (280D×2 / 260 / 75D / 75D) spandex-covered yarn, that is, two 280D spandex yarns are twisted together to form a core yarn to form a spandex-covered yarn. The first warp yarn 1 (spandex-covered yarn) cannot have a web.

[0075] The second warp yarns 2 to the ninth warp yarns 9 (second warp yarn 2, third warp yarn 3, fourth warp yarn 4, fifth warp yarn 5, sixth warp yarn 6, seventh warp yarn 7, eighth warp yarn 8 and ninth warp yarn 9) are made of a single polyester yarn with a linear density of 150D / 48f.

[0076] The four weft yarns (first weft yarn I, second weft yarn II, third weft yarn III, and fourth weft yarn IV) are made of a single polyester yarn with a linear density of 150D / 48f.

[0077] In this embodiment, the fabric parameters of the elastic band are: warp density: 82 threads / 10mm; weft density: 22 threads / 10mm; room temperature stretch ratio: 1:2.2 (original length: maximum stretch length).

[0078] Example 2.

[0079] In this embodiment, in each fabric cycle area Q, the first warp yarn 1 (spandex-covered yarn) is made of four 280D spandex yarns twisted together, with a twist of 100 twists / m, to improve the strength and elongation stability of the first warp yarn 1 (spandex-covered yarn). The 280D spandex is pre-shrinked and set by thermal stress relaxation, with a stretch ratio of 1:6.

[0080] The parameters for heat stress relaxation pre-shrinking and setting of 280D spandex are: setting temperature of 65℃ and setting time of 25min.

[0081] In this embodiment, the parameters of the first warp yarn 1 (spandex-covered yarn) are: 1120D spandex / maximum stretch ratio 2.6 times / 75D polyester on the front / 75D polyester on the back (280D×4 / 260 / 150D / 150D) spandex-covered yarn, that is, four 280D spandex yarns are twisted together to form a core yarn to form a spandex-covered yarn. The first warp yarn 1 (spandex-covered yarn) cannot have a web.

[0082] The second warp yarns 2 to the ninth warp yarns 9 (second warp yarn 2, third warp yarn 3, fourth warp yarn 4, fifth warp yarn 5, sixth warp yarn 6, seventh warp yarn 7, eighth warp yarn 8 and ninth warp yarn 9) are made of two polyester yarns with a linear density of 150D / 48f.

[0083] The four weft yarns (first weft yarn I, second weft yarn II, third weft yarn III and fourth weft yarn IV) use two polyester yarns with a linear density of 150D / 48f.

[0084] In this embodiment, the fabric parameters of the elastic band are: warp density: 78 yarns / 10mm; weft density: 20 yarns / 10mm; room temperature stretch ratio: 1:2.2 (original length: maximum stretch length).

[0085] Example 3.

[0086] In this embodiment, in each fabric cycle area Q, the first warp yarn 1 (spandex-covered yarn) is formed by twisting two 280D spandex yarns together, with a twist of 90 twists / m, to improve the strength and elongation stability of the first warp yarn 1 (spandex-covered yarn). The 280D spandex is pre-shrinked and set by thermal stress relaxation, with a stretch ratio of 1:5.

[0087] The parameters for heat stress relaxation pre-shrinking and setting of 280D spandex are: setting temperature of 62℃ and setting time of 28min.

[0088] In this embodiment, the parameters of the first warp yarn 1 (spandex-covered yarn) are: 560D spandex / maximum stretch ratio 2.6 times / front-covered 75D polyester / back-covered 75D polyester (280D×2 / 260 / 75D / 75D) spandex-covered yarn, that is, two 280D spandex yarns are twisted together to form a core yarn to form a spandex-covered yarn. The first warp yarn 1 (spandex-covered yarn) cannot have a web.

[0089] The second warp yarns 2 to the ninth warp yarns 9 (second warp yarn 2, third warp yarn 3, fourth warp yarn 4, fifth warp yarn 5, sixth warp yarn 6, seventh warp yarn 7, eighth warp yarn 8 and ninth warp yarn 9) are made of a single polyester yarn with a linear density of 150D / 48f.

[0090] The four weft yarns (first weft yarn I, second weft yarn II, third weft yarn III, and fourth weft yarn IV) are made of a single polyester yarn with a linear density of 150D / 48f.

[0091] In this embodiment, the fabric parameters of the elastic band are: warp density: 80 yarns / 10mm; weft density: 21 yarns / 10mm; room temperature stretch ratio: 1:2.2 (original length: maximum stretch length).

[0092] Elastic band samples with a length of 10 cm from Examples 1, 2, and 3 were selected and subjected to tensile tests. Simulating the human body tightening the elastic band, under a tensile tension of 9.8 N, the elongation and tensile ratio changes of the elastic band samples were measured as the temperature increased from 22℃ to 34℃, 36℃, and 37℃. The test results are shown in Table 1.

[0093] Table 1. Elongation and tensile ratio changes of elastic band samples

[0094] Serial Number Temperature ℃ Length after stretching (cm) Elongation % Length-to-Draw ratio (original length: ultimate length) 1 22 14.2 42 1:2.2 2 34 15.0 50 1:2.4 3 36 16.2 62 1:2.5 4 37 17.0 70 1:2.6

[0095] As shown in Table 1, at room temperature, the elongation ratio of the elastic band meets the lower limit requirement of the national standard for woven elastic bands. With increasing temperature, the elongation ratio increases, reaching the upper limit requirement of the national standard for woven elastic bands. This indicates that the elastic band's tightening effect remains intact despite temperature changes. Simultaneously, the loosening of the elastic band's structure reduces the pressure on the human body under elevated temperatures, facilitating heat and moisture exchange, improving comfort, and enhancing the body's motor function.

[0096] Tensile tests were conducted on elastic band samples of 10 cm length from Examples 1, 2, and 3, as well as ordinary elastic band samples of 10 cm length. Simulating the human body tightening the elastic band, the elongation ratios of the elastic band samples were measured under a tensile tension of 9.8 N as the body temperature increased from 22°C to 34°C, 36°C, and 37°C. The elongation ratios of the elastic band samples from Examples 1, 2, and 3, and the ordinary elastic band samples were compared. The test results are shown in Table 2.

[0097] Table 2 Comparison of the tensile ratios of the elastic band samples of the present invention and ordinary elastic band samples.

[0098]

[0099] As shown in Tables 1 and 2, the elongation of the elastic bands in Embodiments 1, 2, and 3 of the present invention increased from 42% to 70% with increasing temperature, a net increase of 28%. The stretch ratio (original length: ultimate length) changed from 1:2.2 to 1:2.6. The elastic band still had a fastening effect, but the linear pressure exerted by the elastic band on the human body was significantly reduced. The gap between the human body and the elastic band increased, moisture dissipation and heat dissipation were accelerated, thermal and moisture comfort and pressure comfort were improved, and the adhesive effect was reduced. This is beneficial to improving human motor function and athletic performance.

[0100] As shown in Table 2, the fabric stretch ratio (original length: ultimate length) of ordinary elastic bands changes from 1:2.2 to 1:2.3 as the temperature rises, which is a small change and does not meet the comfort requirements at high temperatures.

[0101] The present invention provides an elastic band that reduces linear pressure as the temperature rises, which can be widely used in high-heat environments, strenuous physical labor, and as a fastening component for sports underwear.

[0102] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An elastic band that reduces linear pressure as temperature increases, characterized in that, The elastic band includes multiple fabric loop areas, each fabric loop area including: nine rows of warp yarns and four rows of weft yarns; In a fabric cycle area, the first column of warp yarns and the four rows of weft yarns are woven using a weft yarn up-down weaving technique; The second, fourth, sixth, and eighth warp yarns, together with the four rows of weft yarns, are woven using a weaving technique with three weft yarns on the bottom and one weft yarn on the top. The third, fifth, seventh, and ninth warp yarns, together with the four rows of weft yarns, are woven using a weaving technique with three weft yarns on top and one weft yarn on the bottom. The first warp yarn is made of spandex that has been pre-shrinked and shaped by thermal stress relaxation and twisted together, with the spandex stretch ratio between 1:5 and 6. The parameters for pre-shrinking and setting of spandex thermal stress relaxation are: setting temperature of 60℃~65℃, setting time of 25min-30min; The second to ninth warp yarns are made of polyester, and the four weft yarns are also made of polyester.

2. The elastic band according to claim 1, characterized in that, The first warp yarn is made of two or four 280D spandex yarns twisted together to form spandex-covered yarn with a twist of 80-100 twists / m.

3. The elastic band according to claim 2, characterized in that, The parameters of the first warp yarn are: 560D spandex / maximum stretch ratio 2.6 times / 75D polyester front-wrap / 75D polyester back-wrap spandex-covered yarn; Alternatively, the parameters for the first warp yarn can be: 1120D spandex / maximum stretch ratio 2.6 times / front-wrap 75D polyester / back-wrap 75D polyester spandex-covered yarn.

4. The elastic band according to claim 1, characterized in that, The second to ninth warp yarns use one or two polyester yarns with a linear density of 150D / 48f.

5. The elastic band according to claim 1, characterized in that, The four-row weft yarn uses one or two polyester yarns with a linear density of 150D / 48f.

6. The elastic band according to claim 1, characterized in that, The fabric parameters of the elastic band are as follows: warp density: 78-82 threads / 10mm; weft density: 20-22 threads / 10mm; room temperature stretch ratio: 1:2.

2.

7. A method for manufacturing an elastic band whose linear pressure decreases as temperature increases, characterized in that, The manufacturing method includes the following steps: S1. In each fabric repeat area, nine rows of warp yarns are arranged; The first warp yarn is made of spandex that has been pre-shrinked and shaped by thermal stress relaxation and twisted together, with the spandex stretch ratio between 1:5 and 6. The parameters for pre-shrinking and setting of spandex thermal stress relaxation are: setting temperature of 60℃~65℃, setting time of 25min-30min; The second to ninth warp yarns are made of polyester filament; S2. In each fabric cycle area, four rows of weft yarns are introduced. The first column of warp yarns and the four rows of weft yarns are woven using a weft yarn weaving process of one up and one down. S3. In each fabric cycle area, four rows of weft yarns are introduced. The second, fourth, sixth and eighth warp yarns and the four rows of weft yarns are woven with a weaving process of three weft yarns on the bottom and one weft yarn on the top. S4. In each fabric cycle area, four rows of weft yarns are introduced. The third, fifth, seventh and ninth warp yarns are woven with the four rows of weft yarns using a weaving technique with three weft yarns on top and one weft yarn on the bottom.

8. The manufacturing method according to claim 7, characterized in that, The first warp yarn is made of two or four 280D spandex yarns twisted together, with a twist of 80-100 twists / m. The parameters of the first warp yarn are: 560D spandex / maximum stretch ratio 2.6 times / front-wrap 75D polyester / back-wrap 75D polyester spandex-covered yarn; Alternatively, the parameters for the first warp yarn can be: 1120D spandex / maximum stretch ratio 2.6 times / front-wrap 75D polyester / back-wrap 75D polyester spandex-covered yarn.

9. The manufacturing method according to claim 8, characterized in that, The second to ninth warp yarns use one or two polyester yarns with a linear density of 150D / 48f; the four weft yarns use one or two polyester yarns with a linear density of 150D / 48f.

10. The manufacturing method according to claim 8, characterized in that, The fabric parameters for the manufactured elastic band are as follows: warp density: 78-82 threads / 10mm; weft density: 20-22 threads / 10mm; room temperature stretch ratio: 1:2.2.

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