Patent Description:
With the improvement of the living standard in today's society, people's demand for functional textiles gradually increases, and with the continuous coming out of the various functional textiles, the development of the functional textiles with specific purposes has also become more and more complete.

For wearable textiles, they often adhere to the user's skin as the user's sweat or the ambient humidity increases, which greatly reduces the wearing comfort. Therefore, how to reduce the adhesion between the wearable textile and the user's body and thereby enhance the wearing comfort is an important issue for the textile industry. <CIT> discloses a cloth comprising two or more types of fibers, wherein the cloth contains a conjugate fiber having two components conjugated side by side and a crimped fiber having a torque of <NUM> T/m or less. It is preferred that the two components are different from each other with respect to the moisture absorption properties. The weight ratio of the conjugate fiber and the crimped fiber is in the range of from <NUM>:<NUM> to <NUM>:<NUM>. The (conjugate fiber:crimped fiber) ratio is especially preferably <NUM>:<NUM> to <NUM>:<NUM>. With respect to the total fineness ratio, the (conjugate fiber:crimped fiber) ratio is preferably <NUM>:<NUM> to <NUM>:<NUM>. Further, it is preferred that the conjugate fiber is a multifilament having a single fiber fineness of <NUM> to <NUM> dtex. The draw ratio may be appropriately selected so that the finally obtained conjugate fiber has an elongation at break of <NUM> to <NUM>% (preferably <NUM> to <NUM>%) and a strength at break of about <NUM> to <NUM> cN/dtex. <CIT> discloses a single component fiber comprising a modified polyamide and a method of preparing a modified polyamide, which includes copolymerizing C4-C12 lactam, C4-C18 linear aliphatic dicarboxylic acid, polyetherdiamine, and diethylenetriamine (DETA), in which the lactam is <NUM> to <NUM> parts by weight, and the linear aliphatic dicarboxylic acid is <NUM> to <NUM> parts by weight, and the polyetherdiamine is <NUM> to <NUM> parts by weight, and the diethylenetriamine is <NUM> to <NUM> parts by weight. The single component fiber has both good moisture absorption elongation property and drying shrinkage recovery property. Fabrics made from the single component fibers also have good moisture absorption property and durable elongation recovery property.

The present disclosure provides a moisture-response deforming fabric which has a good moisture-response and air-permeable adjustment performance.

According to the invention, the moisture-response deforming fabric includes <NUM> parts by weight to <NUM> parts by weight of an ordinary yarn and <NUM> parts by weight to <NUM> parts by weight of a moisture-response stretching nylon yarn. A water-vapour permeability index (imt) of the moisture-response deforming fabric is greater than or equal to <NUM> under a measurement of the validation FTTS-FP-<NUM>.

According to the invention, the moisture-response stretching nylon yarn is prepared from a reagent including the following components: <NUM> parts by weight to <NUM> parts by weight of lactam, <NUM> part by weight to <NUM> parts by weight of linear aliphatic dicarboxylic acid; <NUM> parts by weight to <NUM> parts by weight of polyetherdiaminee; and <NUM> parts by weight to <NUM> parts by weight of diethylenetriamine (DETA).

According to the invention, the moisture-response deforming fabric is a double-layer lattice knitted fabric, a double-layer striped knitted fabric, a double-layer mesh fabric, a double-layer houndstooth fabric or a single-layer bourellete fabric.

In some embodiments, an air-permeability difference of the moisture-response deforming fabric between dry and wet conditions is between <NUM>% and <NUM>% under a measurement of the ASTM D737 standard method.

In some embodiments, under a relative humidity between <NUM>% and <NUM>%, a moisture regain of the moisture-response stretching nylon yarn when absorbing moisture is substantially equal to a moisture regain of the moisture-response stretching nylon yarn when releasing moisture.

In some embodiments, the moisture-response stretching nylon yarn is a draw textured yarn, a fiber specification of the moisture-response stretching nylon yarn is between <NUM> dtex per filament and <NUM> dtex per filament (<NUM> dpf and <NUM> dpf), a yarn strength of the moisture-response stretching nylon yarn is between <NUM> cN/dtex and <NUM> cN/dtex (<NUM>/d and <NUM>/d), and an elongation of the moisture-response stretching nylon yarn is between <NUM>% and <NUM>%.

In the aforementioned embodiments, since the moisture-response deforming fabric includes an appropriate amount of the ordinary yarn and an appropriate amount of the moisture-response stretching nylon yarn, and the moisture-response stretching nylon yarn has a good elongation property when absorbing moisture and has a good shrinkage recovery property when releasing moisture. Therefore, the moisture-response deforming fabric can deform to a corresponding degree under various humidity, thereby having a good moisture-response and air-permeable adjustment performance. On the other hand, since the moisture-response deforming fabric has a high water-vapour permeability index, the moisture-response deforming fabric can effectively release the sweat generated by the wearer's body, thereby achieving the effect of cooling and maintaining comfort and dryness.

The present invention provides a moisture-response deforming fabric, which includes an appropriate amount of an ordinary yarn and an appropriate amount of a moisture-response stretching nylon yarn. By giving the moisture-response deforming fabric an appropriate ratio of the yarns, and through the elongation property of the moisture-response stretching nylon yarn when absorbing moisture as well as the shrinkage recovery property of the moisture-response stretching nylon yarn when releasing moisture, the moisture-response deforming fabric can be provided with various degrees of deformation (e.g., deformation such as porosity variation, three-dimensional height variation (i.e., air chamber variation)) under different humidity, so as to be provided with a good moisture-response and air-permeable adjustment performance.

The moisture-response deforming fabric of the present invention includes <NUM> parts by weight to <NUM> parts by weight of the ordinary yarn and <NUM> parts by weight to <NUM> parts by weight of the moisture-response stretching nylon yarn. By giving the moisture-response deforming fabric an appropriate ratio of the yarns, and through the elongation property of the moisture-response stretching nylon yarn when absorbing moisture as well as the shrinkage recovery property of the moisture-response stretching nylon yarn when releasing moisture, the moisture-response deforming fabric can be provided with a good moisture-response and air-permeable adjustment performance. A water-vapour permeability index (imt) of the moisture-response deforming fabric is greater than or equal to <NUM> under a measurement of the validation FTTS-FP-<NUM>. Hence, the sweat produced by the wearer's body is effectively released, so as to achieve the effect of cooling and maintaining comfort and dryness. As such, the moisture-response deforming fabric of the present disclosure can be applied to functional outdoor and sports clothing, intimate clothing, high-comfort work clothing (e.g., work clothing in military and police fields or in industrial and commercial fields), or fabrics that require a moisture-response function. It should be noted that the moisture-response deforming fabric is composed of <NUM> parts by weight to <NUM> parts by weight of the ordinary yarn and <NUM> parts by weight to <NUM> parts by weight of the moisture-response stretching nylon yarn, and merely with such a configuration, the above-mentioned moisture-response deforming fabric can be provided with a good moisture-response and air-permeable adjustment performance. However, in examples not forming part of the present invention, dyeing and finishing process or other post-treatment can be applied to provide the moisture-response deforming fabric with a better moisture-response and air-permeable adjustment performance.

In some embodiments, the ordinary yarn may be a polyester yarn, a nylon yarn, or a combination thereof. Specifically, the material of the polyester yarn may include but not limited to polyethylene terephthalate (PET), and the material of the nylon yarn may include but not limited to nylon <NUM>. In some embodiments, the moisture-response stretching nylon yarn may have a structure represented by formula (<NUM>), which is provided in <FIG>, in which (a+c) is an integer ranging from <NUM> to <NUM>, b is an integer ranging from <NUM> to <NUM>, m is an integer ranging from <NUM> to <NUM>, n is an integer ranging from <NUM> to <NUM>, x is an integer ranging from <NUM> to <NUM>, and y is an integer ranging from <NUM> to <NUM>. According to the invention, the moisture-response stretching nylon yarn may be prepared from reagents including lactam, linear aliphatic dicarboxylic acid, polyetherdiamine, and diethylenetriamine (DETA). Specifically, <NUM> parts by weight to <NUM> parts by weight of the lactam, <NUM> part by weight to <NUM> parts by weight of the linear aliphatic dicarboxylic acid, <NUM> parts by weight to <NUM> parts by weight of the polyetherdiamine, and <NUM> parts by weight to <NUM> parts by weight of the diethylenetriamine are copolymerized to form the moisture-response stretching nylon yarn. By ensuring the ratio of each agent to fall within the above-mentioned range, it is helpful to improve the degree of polymerization of the moisture-response stretching nylon yarn.

In some embodiments, the lactam may have, for example, <NUM> to <NUM> carbons, and the linear aliphatic dicarboxylic acid may have, for example, <NUM> to <NUM> carbons. In some preferred embodiments, the lactam may be caprolactam having <NUM> carbons, and the linear aliphatic dicarboxylic acid may be adipic acid having <NUM> carbons. As such, when the ordinary yarn in the moisture-response deforming fabric is the nylon yarn, the material homogeneity between the moisture-response stretching nylon yarn and the ordinary yarn can be improved, thereby improving the recyclability of the moisture-response deforming fabric. In some embodiments, the polyetherdiamine may have the structure represented by formula (<NUM>):
<CHM>
formula (<NUM>), in which (a+c) is an integer ranging from <NUM> to <NUM>, and b is an integer ranging from <NUM> to <NUM>. In some embodiments, a weight average molecular weight of the polyetherdiamine may be between <NUM>/mole and <NUM>/mole, thereby providing good reactivity. Since the ether group in the polyetherdiamine is easy to form a hydrogen bond with the water molecule, the moisture-response stretching nylon yarn can be provided with good hygroscopicity and good flexibility. On the other hand, since the secondary amine group in the diethylenetriamine can form a covalent bond with the carboxylic acid group of the linear aliphatic dicarboxylic acid to further form a micro-crosslinked structure having good fluidity as well as elasticity, the moisture-response stretching nylon yarn can be provided with a good elongation property and a good shrinkage recovery property.

The moisture-response stretching nylon yarn has a good elongation property when absorbing moisture and a good shrinkage recovery property when releasing moisture. The moisture-response stretching nylon yarn is a single component yarn without the need to be combined with other materials to form a bicomponent composite yarn such as a core/sheath or side-by-side bicomponent composite yarn, so as to make the manufacturing process of the moisture-response stretching nylon yarn easy to be recycled, thereby having the advantages of low manufacturing cost and environmental protection. In some embodiments, the moisture-response stretching nylon yarn may be a draw textured yarn (DTY), which has a high degree of curl to provide fluffy softness. As such, when the moisture-response stretching nylon yarn is applied to the moisture-response deforming fabric, the deformation degree of the moisture-response deforming fabric when sensing variation of moisture can be improved, thereby improving the moisture-response and air-permeable adjustment performance of the moisture-response deforming fabric, and reducing the stickiness caused by the contact between the moisture-response deforming fabric and the users' body when the body sweats. In addition, when the moisture-response stretching nylon yarn is the draw textured yarn, the defects generated during the manufacturing process of the moisture-response deforming fabric can be reduced, thereby improving the hand feeling and wearing comfort of the moisture-response deforming fabric. In some embodiments, a fiber specification of the moisture-response stretching nylon yarn may be between <NUM> dtex per filament and <NUM> dtex per filament (<NUM> dpf and <NUM> dpf), a yarn strength of the moisture-response stretching nylon yarn may be between <NUM> cN/dtex and <NUM> cN/dtex (<NUM>/d and <NUM>/d), and an elongation of the moisture-response stretching nylon yarn may be between <NUM>% and <NUM>%. Accordingly, the degree of deformation required by the moisture-response stretching nylon yarn during moisture absorption and moisture release can be met.

On the other hand, since the moisture-response stretching nylon yarn of the present disclosure has both high moisture-absorbing performance and high moisture-releasing performance, the moisture-response stretching nylon yarn has barely no hysteresis effect. Specifically, reference is made to <FIG> and <FIG>, which illustrate the hysteresis curves of a moisture-response stretching nylon yarn under different ambient temperatures according to some embodiments of the present disclosure, in which the ambient temperature of <FIG> is <NUM>, while the ambient temperature of <FIG> is <NUM>. As shown in <FIG> and <FIG>, whether under an ambient temperature of <NUM> or <NUM>, when a relative humidity of the environment is between <NUM>% and <NUM>%, a curve of a moisture regain of the moisture-response stretching nylon yarn when absorbing moisture is substantially overlapped with a curve of a moisture regain of the moisture-response stretching nylon yarn when releasing moisture. That is, under given ambient temperature and humidity, the moisture regain of the moisture-response stretching nylon yarn when absorbing moisture is substantially equal to the moisture regain of the moisture-response stretching nylon yarn when releasing moisture. It can be seen that the moisture-response stretching nylon yarn can have almost the same moisture absorption rate and moisture release rate, that is, without hysteresis effect, so as to fully activate the moisture-absorbing elongation mechanism and the moisture-releasing shrinkage mechanism. It should be understood that the term "substantially" mentioned in the present disclosure refers to the meaning of "within ±<NUM>% of a given value or range thereof. " In other words, the aforementioned "the moisture regain of the moisture-response stretching nylon yarn when absorbing moisture is substantially equal to the moisture regain of the moisture-response stretching nylon yarn when releasing moisture" refers to the meaning of "the difference between the moisture regain of the moisture-response stretching nylon yarn when absorbing moisture and the moisture regain of the moisture-response stretching nylon yarn when releasing moisture falls within <NUM>% of the moisture regain of the moisture-response stretching nylon yarn when absorbing (releasing) moisture.

Based on the elongation property of the moisture-response stretching nylon yarn when absorbing moisture and the shrinkage recovery property of the moisture-response stretching nylon yarn when releasing moisture, the moisture-response deforming fabric of the present disclosure can have larger fabric pores and a greater three-dimensional height variation after moisture absorption, and the moisture-response deforming fabric can return to its initial fabric size after moisture release/drying, thereby providing a good moisture-response and air-permeable adjustment performance. In some embodiments, the moisture-response and air-permeable adjustment performance of the moisture-response deforming fabric can be further adjusted through the weave design of the moisture-response deforming fabric. In detail, through a variety of weave designs, the moisture-response deforming fabric can have different degrees of porosity variations and three-dimensional height variations, thereby providing a wide range of applications. In more detail, the moisture-response deforming fabric of the present disclosure can be knitted by, for example, a circular knitting machine, and the present disclosure represents a various weave designs of the moisture-response deforming fabric through mutiple knitting sequence diagrams and mutiple knitting needle combination diagrams. More specifically, reference is made to <FIG>, in which <FIG>, <FIG>, <FIG>, <FIG>, and <FIG> are knitting sequence diagrams of moisture-response deforming fabrics according to the invention, and <FIG>, <FIG>, <FIG>, <FIG>, and <FIG> are knitting needle combination diagrams of the knitting sequence diagrams shown in <FIG>, <FIG>, <FIG>, <FIG>, and <FIG>, respectively.

Specifically, the moisture-response deforming fabric knitted with the knitting sequence diagram and the knitting needle combination diagram of <FIG> and <FIG> is a double-layer lattice knitted fabric, the moisture-response deforming fabric knitted with the knitting sequence diagram and the knitting needle combination diagram of <FIG> and <FIG> is a double-layer striped knitted fabric, the moisture-response deforming fabric knitted with the knitting sequence diagram and the knitting needle combination diagram of <FIG> and <FIG> is a double-layer mesh fabric, the moisture-response deforming fabric knitted with the knitting sequence diagram and the knitting needle combination diagram of <FIG> and <FIG> is a double-layer houndstooth fabric, and the moisture-response deforming fabric knitted with the knitting sequence diagram and the knitting needle combination diagram of <FIG> and <FIG> is a single-layer bourellete fabric. It should be understood that in <FIG>, <FIG>, <FIG>, and <FIG>, the polyester yarn (e.g., PET yarn) is represented by the symbol "T", and the moisture-response stretching nylon yarn is represented by the symbol "N"; in <FIG>, the moisture-response stretching nylon yarn is represented by the symbol "N1", and the nylon yarn (e.g., nylon <NUM> yarn) is represented by the symbol "N2".

In the following description, various tests will be performed on the moisture-response deforming fabric of the present disclosure to further verify the efficacy of the present invention. It should be understood that the present invention should not be limited by the following embodiments.

In this experiment, the nylon <NUM> yarn and the moisture-response stretching nylon yarn were woven with various ratios into various fabrics (the fabric of Comparative Example <NUM> and the moisture-response deforming fabrics of Embodiments <NUM> to <NUM>) with a plain weave, and the tests of porosity variations and air-permeability differences on fabrics between dry and wet conditions before and after moisture absorption were performed on each fabric. The porosity variations of the fabric between dry and wet conditions were calculated by formula (<NUM>): "formula (<NUM>): porosity variation of the fabric between dry and wet conditions (%) = {[porosity (wet) - porosity (dry)] / porosity(dry)} × <NUM>%," in which porosity (wet) was calculated by formula (<NUM>): <Formula (<NUM>): porosity (wet) (%) = [<NUM>-coverage (wet)] × <NUM>%," and porosity (dry) was calculated by formula (<NUM>): "Formula (<NUM>): porosity (dry) (%) = [<NUM>-coverage (dry)] × <NUM>%. " The air-permeability differences on fabrics between dry and wet conditions were measured by the ASTM D737 standard method (Note: take the air-permeability of the fabric as a reference value when the relative humidity is <NUM>%, and measure the air-permeability of fabric under the relative humidity between <NUM>% and <NUM>%). The results are shown in Table <NUM>.

Compared with the fabric of Comparative Example <NUM>, the porosity variation and the air-permeability difference between dry and wet conditions of the moisture-response deforming fabric of Embodiment <NUM> were respectively increased by <NUM> times and <NUM> times, and the porosity variation and the air-permeability difference between dry and wet conditions of the moisture-response deforming fabric of Embodiment <NUM> were respectively were further respectively increased by <NUM> times and <NUM> times. It can be seen that when the ratio of nylon <NUM> yarn and moisture-response stretching nylon yarn were each <NUM> parts by weight, the moisture-response deforming fabric had significant porosity variation and the air-permeability difference between dry and wet conditions. In addition, it is worth noting that it can be found from Embodiments <NUM> to <NUM> that when the content of the moisture-response stretching nylon yarn continuously increased, the porosity variation and the air-permeability difference between dry and wet conditions were limited. Accordingly, based on cost considerations, the content of the ordinary yarn is preferably between <NUM> parts by weight and <NUM> parts by weight, and the content of the moisture-response stretching nylon yarn is preferably between <NUM> parts by weight and <NUM> parts by weight.

In this experiment, the ordinary yarn and the moisture-response stretching nylon yarn were knitted into moisture-response deforming fabrics with various knit designs (Embodiments <NUM> to <NUM>), and the tests of three-dimensional height variation, air-permeability difference between dry and wet conditions, and water-vapour permeability were performed on each moisture-response deforming fabric before and after moisture absorption. The air-permeability difference between dry and wet conditions of the moisture-response deforming fabrics were measured by the ASTM D737 standard method (Note: take the air-permeability of the fabric as a reference value when the relative humidity is <NUM>%, and measure the air-permeability of fabric under the relative humidity between <NUM>% and <NUM>%). The three-dimensional height variation of the moisture-response deforming fabrics were obtained by measuring the three-dimensional (Z-axis) height differences of fabrics before and after moisture absorption under the above environmental conditions. The water-vapour permeability index of moisture-response deforming fabric was measured under the validation FTTS-FP-<NUM>. The detailed description of each moisture-response deforming fabric is shown in Table <NUM>, and the results are shown in Table <NUM>.

Claim 1:
A moisture-response deforming fabric, comprising:
<NUM> parts by weight to <NUM> parts by weight of an ordinary yarn; and
<NUM> parts by weight to <NUM> parts by weight of a moisture-response stretching nylon yarn, characterized in that a water-vapour permeability index of the moisture-response deforming fabric is greater than or equal to <NUM> under a measurement of the validation FTTS-FP-<NUM>, the moisture-response deforming fabric is a double-layer lattice knitted fabric, a double-layer striped knitted fabric, a double-layer mesh fabric, a double-layer houndstooth fabric, or a single-layer bourellete fabric as defined in the figures 2A-6B, and the moisture-response stretching nylon yarn is prepared from a reagent comprising following components:
<NUM> parts by weight to <NUM> parts by weight of lactam;
<NUM> part by weight to <NUM> parts by weight of linear aliphatic dicarboxylic acid;
<NUM> parts by weight to <NUM> parts by weight of polyetherdiamine; and
<NUM> parts by weight to <NUM> parts by weight of diethylenetriamine.