A functional knit pile fabric and method of making the same

Abstract

The present application relates to the field of textiles, and particularly relates to a functional chenille knitted fabric and a preparation method thereof. The fabric yarns of the chenille knitted fabric include first yarns, second yarns and third yarns. The knitted fabric includes an inner layer, an intermediate layer and an outer layer. The first yarns, the second yarns and the third yarns jointly form the inner layer of the knitted fabric. The first yarns and the second yarns jointly form the intermediate layer of the knitted fabric. The first yarns alone form the outer layer of the knitted fabric. The first yarns are modified chenille yarns. The core yarns of the modified chenille yarns are profiled cross-section modified polyester fiber or polyamide fiber yarns. The feather yarns of the modified chenille yarns are blended or pure hydrophilic fiber yarns. The second yarns are elastic fiber yarn cover yarns. The knitted fabric has comfortable elasticity and is not tight. The knitted fabric is not prone to deformation and affects the appearance of the garment after long-term wearing. The knitted fabric has excellent anti-pilling and anti-snagging properties, good air permeability and moisture permeability, and good warmth retention. The knitted fabric has durable moisture absorption, quick drying and one-way moisture transfer functions.

Description

Technical Field

[0001] This invention relates to the field of textiles, specifically to a chenille functional knitted fabric and its preparation method. Background Technology

[0002] Chenille yarn, also known as corduroy, is a new type of fancy yarn. It is spun using two strands as the core yarn, with the downy fibers sandwiched between them through twisting. Common chenille products include viscose / acrylic, cotton / polyester, viscose / cotton, acrylic / polyester, and viscose / polyester blends. A characteristic of chenille yarn is that the downy fibers are held within the twisted core yarn, resembling a bottle brush. It has a soft hand feel and is widely used in woven pile fabrics and decorative fabrics, producing luxurious, velvety textures. It can also be used directly as knitting yarn, offering a full, warm, and decorative effect. Chenille woven pile fabrics are widely used in home textiles. The use of chenille yarn gives home textile fabrics a thick, luxurious feel, a soft hand feel, a full pile, and excellent water absorption. Chenille decorative fabrics can be made into sofa covers, bedspreads, blankets, tablecloths, carpets, wall decorations, curtains, and other interior decorations. It can also be used directly as knitting yarn, offering a full, warm, and decorative effect. The application of chenille yarn in the field of knitted footwear and apparel fabrics will become a new highlight for future development.

[0003] French rib knit fabrics with varying gauge rely on alternating skipped and pulled needles on either the front or back side to create a rugged surface and a corduroy effect. Because the pulled needles create a longer sinker arc, the fabric's elasticity is limited, resulting in poor elasticity and a tendency to pill and deform. The dense surface of the fine gauge, however, affects the fabric's breathability and moisture permeability. Double-stitched corduroy fabrics involve two consecutive rows of two skipped and two pulled needles on one side of the fabric. This results in insufficient elasticity and a tendency to pill, fuzz, and snag.

[0004] Utility model patent CN 216040050 U discloses a chenille fabric, a woven fabric, primarily addressing the common problem of relatively poor skin-friendliness in chenille fabrics, which limits their application, especially in the apparel industry. This technical solution provides a chenille fabric with improved antistatic, anti-pilling, and stain-resistant properties, while also offering good skin-friendliness and warmth. However, this fabric has poor skin-fit and is prone to pilling and deformation.

[0005] Utility model patent CN 212477042 U discloses a chenille knitted fabric, which is woven from chenille yarn, a first yarn, a second yarn, and a third yarn through an eight-way loop, mainly to solve and improve the problem of severe lint shedding in chenille fabric. However, it focuses more on the appearance and practicality of the fabric, without considering the skin-friendliness and functionality of knitted fabrics. Summary of the Invention

[0006] In view of this, the present invention proposes a chenille functional knitted fabric and its preparation method, thereby obtaining a chenille functional fabric with good skin-friendliness and moisture-wicking properties.

[0007] As a first aspect of the present invention, a chenille functional knitted fabric is provided, wherein the knitting yarn includes a first yarn, a second yarn and a third yarn, the knitted fabric includes an inner layer, a middle layer and an outer layer, wherein the first yarn, the second yarn and the third yarn together form the inner layer of the knitted fabric, the first yarn and the second yarn together form the middle layer of the knitted fabric, and the first yarn alone forms the outer layer of the knitted fabric.

[0008] The first yarn is a modified chenille yarn, which includes a core yarn and a down yarn. The core yarn is a modified polyester fiber or polyamide fiber yarn with an irregular cross section, and the down yarn is a blended or pure spun yarn of hydrophilic fibers.

[0009] The second yarn is an elastic fiber yarn covered yarn, including an elastic core yarn and an outer covering yarn that covers the elastic core yarn in a spiral manner;

[0010] The third yarn is any type of woven yarn.

[0011] Furthermore, the knitted fabric is a weft-knitted fabric woven by a circular weft knitting machine. The knitting machine's needle arrangement uses one high-heel needle and one low-heel needle alternately on both the upper and lower needles. Its knitting structure adopts a six-way loop knitting. The first and fourth ways use the third yarn to knit into a loop structure to form the inner layer of the fabric. The second and fifth ways use the second yarn to knit alternately on the front and rear needle beds to form the middle and inner layers of the fabric. The third and sixth ways use the first yarn to knit into a loop structure to form the outer, middle, and inner layers of the fabric.

[0012] Furthermore, the core yarn of the first yarn includes either ultra-fine denier cross-section modified polyamide fiber yarn or cross-section modified and hydrophilic polyester fiber yarn, wherein the modified cross-section includes a non-circular cross-section, a Y-shaped cross-section or a serrated cross-section; the down yarn in the first yarn includes pure or blended yarn formed from at least one of wool fiber, ultra-fine denier moisture-wicking modified acrylic fiber, cotton fiber, ultra-fine denier hydrophilic modified polyester fiber and polyamide fiber.

[0013] Furthermore, hydrophilic modification involves introducing a hydrophilic third monomer into the fiber preparation process for blending and copolymerization, thereby grafting hydrophilic groups into the fiber.

[0014] Furthermore, the elastic core yarn of the second yarn is one of high-temperature resistant polyurethane fiber yarn, low-temperature polyurethane fiber yarn, or polyolefin fiber yarn.

[0015] The outer sheath yarn of the second yarn is one of the following: cross-section modified polyamide fiber low elastic filament, cross-section modified polyester fiber low elastic filament, cross-section modified polyamide fiber staple fiber and cotton fiber blended yarn, or cross-section modified polyester fiber staple fiber and cotton fiber blended yarn. The cross-section modification is a non-circular cross-section such as a cross-section, a Y-shaped cross-section or a serrated cross-section. The cotton fiber accounts for 20% to 80% of the blended yarn.

[0016] Furthermore, the linear density of the first yarn is 16Nm to 8Nm; the linear density of the elastic core of the second yarn is 20D to 140D, and when the outer covering yarn is filament, its linear density is 100D to 400D, and when the outer covering yarn is blended yarn, its linear density is 60S to 16S; the linear density of the third yarn is 50D to 200D when it is filament, and when it is staple fiber spinning, its linear density is 120S to 32S.

[0017] Furthermore, the linear density of a single fiber of the ultrafine denier polyamide fiber, ultrafine denier polyester fiber, and ultrafine denier moisture-wicking modified acrylic fiber in the first yarn is 0.5D to 1.0D; the linear density of a single fiber of the cross-section modified polyamide fiber and cross-section modified polyester fiber in the second yarn is 1.25D to 1.75D; and the linear density of a single fiber of the chemical fiber in the third yarn is 2.0D to 4.2D.

[0018] Furthermore, the elastic core yarn of the second yarn accounts for 2% to 8% of the chenille functional knitted fabric.

[0019] Furthermore, chenille functional knitted fabrics undergo moisture-wicking finishing during the dyeing and finishing process.

[0020] As a second aspect of the present invention, a method for preparing the chenille functional knitted fabric as described above is provided, comprising the following steps in sequence:

[0021] 1) Raw material preparation: Select the first, second, and third yarn raw materials according to the designed fabric;

[0022] 2) Weaving: The selected raw material is hung on the machine for weaving. The first yarn, the second yarn and the third yarn together form the inner layer of the knitted fabric, the first yarn and the second yarn together form the middle layer of the knitted fabric, and the first yarn alone forms the outer layer of the knitted fabric. During weaving, the width cutting line is reserved for the opening and pre-setting of the subsequent process to obtain the fabric blank.

[0023] 3) Raw material inspection: The obtained fabric raw materials are cut along the cutting line and inspected at the same time before being put into storage;

[0024] 4) Dyeing and mixing: The qualified fabric blanks are unwound from the roll and loaded into the dyeing machine, and then joined into a continuous state.

[0025] 5) Pre-forming: The fabric blanks that have been joined together in the whole car are pre-formed. The pre-forming temperature is 130-190℃, the car speed is 15-25m / min, and the overfeed amount of fabric is 10-50%.

[0026] 6) Dyeing vat loading: Water is added to the dyeing vat according to the weight of the fabric blank and the bath ratio. After the pre-shaped fabric blank is loaded into the vat, the ends of the fabric are sewn into a rope loop that can be continuously operated in the dyeing vat.

[0027] 7) Pretreatment: The fabric blanks that have been put into the dyeing and finishing vat are subjected to pretreatment to obtain semi-finished fabric.

[0028] 8) Dyeing: Based on the selected fiber yarns of the fabric, a reasonable dyeing process and dyeing technology are formulated, and dyeing solution is used to dye the pre-treated fabric semi-finished products.

[0029] 9) Hot washing and cold washing: Use soap to hot wash the semi-finished fabric. The hot washing temperature is controlled at 85-98℃ and the heat preservation time is controlled at 10-20 minutes. After washing away the floating and staining of the fiber dye, it is then cold washed in water for 10-20 minutes.

[0030] 10) In-cylinder suction and drainage: Add another cylinder of water, and use a moisture-wicking finishing liquid to perform suction and drainage finishing on the semi-finished fabric obtained in step 9), and heat it to 60-80℃ and keep it warm for 20-30 minutes;

[0031] 11) Dehydration and drying: Remove the semi-finished fabric obtained in step 10) from the vat, dehydrate it, and then dry it in a flat width.

[0032] 12) Re-setting: The semi-finished fabric is re-set to obtain a clean fabric blank. The setting temperature is 130-150℃, the machine speed is 18-30m / min, and the overfeed amount is 30-50%.

[0033] 13) Inspection of raw fabric: Inspect all raw fabrics obtained and roll them into a warehouse.

[0034] Furthermore, in step 2), the weaving method is as follows:

[0035] A total of six rows of knitting form a complete circular structure. The arrangement of the knitting needles is one high-heel stitch and one low-heel stitch, with high-heel stitches and low-heel stitches alternating. The first and fourth rows are single-sided knitting with both high-heel stitches and low-heel stitches coming out in full, and the third yarn entering the loop, forming the main body of the inner layer of the fabric. The second row is double-sided knitting with the low-heel stitches of both knitting needles coming out half a stitch and the second yarn entering the loop. The fifth row is double-sided knitting with the low-heel stitches of knitting needles and the high-heel stitches of knitting needles coming out half a stitch and the second yarn entering the loop, connecting the inner and outer layers of the fabric and forming the main body of the middle layer and part of the inner layer of the fabric. The third and sixth rows are single-sided knitting with both high-heel stitches and low-heel stitches coming out in full, and the first yarn entering the loop. The high-heel stitches form the outer layer of the fabric, and the low-heel stitches form part of the middle layer and part of the inner layer of the fabric.

[0036] Furthermore, the weaving is performed on a multi-functional small jacquard double-sided machine or a multi-functional small jacquard rib machine, with the knitting needles arranged in a rib pattern, and the machine size range is 14G to 24G.

[0037] Furthermore, in step 9), the soaping agent is a mixture of three additives: detergent, chelating dispersant, and laundry powder. The detergent content in the mixture is 1-3 g / L, the chelating dispersant content is 1-2 g / L, and the laundry powder content is 0.5-1.5 g / L.

[0038] Furthermore, in step 10), the moisture-wicking finishing liquid is a mixture of acetic acid or citric acid and a moisture-wicking agent, wherein the content of acetic acid or citric acid in the mixture is 0.5-1.5 g / L, and the moisture-wicking agent is 2-4% (owf).

[0039] Furthermore, in step 12), the re-sizing process involves one dip and one roll, with a roll residue of 60-100%. During the dip and roll, the content of each component in the rolling solution is as follows: the content of acetic acid or citric acid is 0.5-1.5 g / L, and the content of moisture-wicking agent is 20-40 g / L.

[0040] Furthermore, the moisture-wicking agent is one or both of the following: a polyester polyether organosilicon ternary copolymer compound and a polyamide polyether organosilicon ternary copolymer compound.

[0041] The chenille functional knitted fabric obtained by this invention has a three-layer structure consisting of an outer layer, a middle layer, and an inner layer. In the third and sixth rows, all high-heel and low-heel needles exit the loop and the first yarn enters, forming loops for single-sided knitting. Theoretically, the loops formed by the high-heel and low-heel needles should constitute the outer layer of the fabric. In the second and fifth rows of double-sided knitting, only the low-heel needles participate in the loop knitting, and the loops formed should also theoretically constitute the outer layer of the fabric. The low-heel needles of the second row and the high-heel needles of the fifth row form part of the inner layer of the fabric. In the third and sixth rows, the loop index of the high-heel needle loops is 2, and the loop length is relatively long. All loops are formed by bending the first yarn and interlocking with each other, forming the raised warp of the outer layer. In the third and sixth rows, the loop index of the purl low-heel stitch is 1, and the loop length is relatively short. In the second and fifth rows, the loop index of the purl low-heel stitch is 0, and the loop length is relatively short. The purl low-heel stitch loops are all formed by one first yarn loop and one second yarn loop interlaced. The loop index of the purl low-heel stitch in the second row and the purl high-heel stitch in the fifth row are both 1, and the loop length is relatively long. In the double-sided knitting of the second and fifth rows, the longer kurl stitches will further tighten the shorter loops formed by the purl low-heel stitches, pulling them into the middle layer of the fabric. In addition, the second yarn is an elastic fiber yarn covered yarn. The tightened purl low-heel stitches form shorter loops of the second yarn, which further pulls the relatively short first yarn loops formed by the purl low-heel stitches in the third and sixth rows into the middle layer of the fabric. The first yarn thus participates in the formation of the middle layer of the fabric, which is composed of the first yarn and the second yarn. The low-heeled loops of the purl needles form a first yarn loop and a second yarn loop that interweave and recede into the middle layer of the fabric. Together with the longer, raised loops formed by the high-heeled purl needles, this creates a corduroy effect in the fabric. Traditional French rib knit fabrics with varying gauge are woven with a skip-one-needle pattern, while double-stitch corduroy fabrics are woven with two consecutive rows of two skip-two-needle single-sided knits. The skip-one or two skip-two-needle sections create a long lateral sinker arc, severely restricting the fabric's lateral elasticity. In this invention's chenille functional knit fabric, the third and sixth rows, as well as the first and fourth rows, are all woven with full-length purl needles, eliminating the constraint of excessively long sinker arcs. Furthermore, the introduction of the second elastic fiber yarn covering provides comfortable elasticity, offering stretch without being tight or constricting, and preventing bulging or deformation that could affect the garment's appearance after prolonged wear.

[0042] The first and fourth rows of knitting, including both high-heel and low-heel stitches, are all brought in with the third yarn to form single-sided loops, constituting the main body of the inner layer of the fabric. The high-heel stitches in the first row have a loop index of 2 and a relatively long loop length, while the low-heel stitches have a loop index of 0 and a relatively short loop length. Large and small loops are alternated within the same horizontal row. Similarly, the high-heel stitches in the fourth row have a loop index of 0 and a relatively short loop length, while the low-heel stitches have a loop index of 2 and a relatively long loop length. Small and large loops are alternated within the same horizontal row. In the high-heel stitch, the first loop forms a long third yarn loop, the fourth loop forms a short third yarn loop, and the fifth loop forms a second yarn loop that is longer than the loop formed in the low-heel stitch. These three loops are interlocked and repeated to form the high-heel warp of the fabric. In the low-heel stitch, the first loop forms a short third yarn loop, the second loop forms a longer second yarn loop than the loop formed in the low-heel stitch, and the fourth loop forms a long third yarn loop. These three loops are interlocked and repeated to form the low-heel warp of the fabric. The second and third yarns mainly contribute to the inner layer of the fabric. In the low-heel stitch, the shorter loop formed by the first yarn is pulled into the middle layer of the fabric by the combined forces of tension and elasticity of the loop formed by the second yarn. In addition, the first yarn has a higher linear density and is thicker, so some of the downy fibers outside the core yarn will penetrate into the inner layer of the fabric. Therefore, the inner layer of the fabric is composed of the first, second, and third yarns. The second and third yarns have relatively low linear density and are finer. Longer and shorter loops are interlaced in the inner layer of the fabric, which has many pores of different sizes and a high volume fraction, giving the fabric good breathability and moisture permeability. The first yarn consists of wool, acrylic, cotton, ultra-fine denier polyester, and ultra-fine denier polyamide fibers, as well as blends of these fibers. These fibers contain a large amount of stagnant air within or between them. The first yarn has a high linear density, resulting in a small volume fraction in the outer layer of the fabric. The resulting fabric has a dense outer layer, retaining a large amount of stagnant air between the skin and the outer layer. As is well known, air has the lowest thermal conductivity, and these factors contribute to the fabric's good warmth retention.

[0043] The chenille functional knitted fabric obtained by this invention undergoes a two-stage moisture-wicking process: in-cylinder moisture wicking and re-setting moisture wicking. The moisture-wicking agent is one or both of polyester polyether organosilicon ternary copolymers and polyamide polyether organosilicon ternary copolymers. Under heat treatment conditions, the chain segments between the aromatic rings of polyester or polyamide fibers are stretched by heat, and the polyester or polyamide chain segments of the moisture-wicking agent are similar and compatible with the polyester or polyamide fiber molecules, thus entering the interior of the fiber. As the temperature decreases, the chain segments between the aromatic rings of polyester or polyamide fibers re-contract, while the polyester or polyamide segments of the moisture-wicking agent are embedded in the middle, tightly bound together. This anchors the moisture-wicking agent to the polyester or polyamide fibers in the first, second, and third yarns through the polyester or polyamide chain segments, while the polyether and silicone chain segments extend to the outside of the fibers. The polyether chain segments give the fabric durable, wash-resistant hydrophilicity, and the silicone chain segments give the fabric a durable, wash-resistant, soft, and comfortable feel. The fabric is thus endowed with durable, wash-resistant moisture-wicking properties. The inner layer of the fabric consists of the first, second, and third yarns. The downy fibers of the first yarn partially penetrate into the inner layer. The downy fibers are one or two of the following: wool fibers, moisture-wicking modified acrylic fibers, cotton fibers, ultra-fine denier hydrophilic modified polyester fibers, and polyamide fibers, blended in a certain proportion. All of these fibers have high moisture absorption or high adsorption properties, and sweat moisture is rapidly conducted to the middle and outer layers through the strong wicking and moisture-wicking effect of the downy fibers. The middle layer of the fabric consists of a first yarn and a second yarn. The core yarn of the first yarn, chenille yarn, uses ultra-fine denier cross-section modified polyamide fiber yarn or cross-section modified and hydrophilic modified polyester fiber yarn. The outer covering yarn of the second yarn, elastic fiber yarn, is one of the following: cross-section modified polyamide fiber low-elasticity filament, cross-section modified polyester fiber low-elasticity filament, cross-section modified polyamide fiber staple fiber and cotton fiber blended yarn, or cross-section modified polyester fiber staple fiber and cotton fiber blended yarn. Both the core yarn of the first yarn and the outer covering yarn of the second core yarn are cross-section modified fiber yarns, which have a larger specific surface area and specific surface energy than ordinary circular cross-sections, resulting in stronger wicking and moisture-wicking functions. Sweat moisture can be quickly diffused and transferred in the transverse and longitudinal directions of the middle layer. The outer layer of the fabric is composed of the first yarn, the core of which is an ultra-fine denier fiber yarn. The ultra-fine denier fiber yarn with a unit linear density has a larger specific surface area than ordinary yarn. The first yarn forms transverse and longitudinal moisture-wicking channels through weaving on the outer layer of the fabric. Under the action of strong specific surface energy, the moisture is diffused and transferred, and the moisture absorption area expands rapidly. The larger the moisture absorption area, the larger the moisture evaporation area on the outer surface. The fabric has both durable and washable moisture absorption and quick-drying functions.

[0044] The chenille functional knitted fabric obtained by this invention has a one-way moisture-wicking function. The principle of one-way moisture wicking is described below:

[0045] The moisture absorption properties of the inner, middle, and outer layers of the fabric of this invention differ. The first yarn participates in the weaving of the outer, middle, and inner layers. The outer layer is entirely composed of the first yarn. The loop length (loop index 1) of the first yarn in the middle layer is relatively shorter than the loop length (loop index 2) in the outer layer. The participation of the first yarn in the inner layer is only a portion of the fibers in the feather fibers of the first yarn in the middle layer. It penetrates due to the high linear density of the first yarn and the high volume fraction of the inner layer. The weight of the first yarn decreases stepwise from the outer layer to the middle layer and then to the inner layer. The overall weighted average moisture regain of the outer layer > the weighted average moisture regain of the middle layer > the weighted average moisture regain of the inner layer, forming a gradient of moisture absorption differences among the three layers of fabric. The stepwise differential moisture absorption realizes the unidirectional moisture-wicking function of the fabric.

[0046] The linear density of the first yarn is 16NM~8NM (625dtex~1250dtex); the linear density of the second yarn's outer covering yarn is 100D~400D (111.11dtex~444.44dtex) for filaments and 60S~16S (97.93dtex~367.25dtex) for blended yarns; the linear density of the third yarn's filaments is 50D~200D (55.56dtex~222.22dtex) for filaments and 120S~32S (48.97dtex~183.63dtex) for pure or blended yarns. To facilitate comparison of the linear density of the three yarns, all linear density indicators were converted into specific denominators (within parentheses). It's easy to see that the linear density of the first yarn is significantly greater than that of the outer wrapper yarn of the second yarn, and the outer wrapper yarn of the second yarn is greater than that of the third yarn. The design concept is based on the assumption that individual fiber linear densities are the same. Yarns with higher linear density have more individual fibers, resulting in a relatively larger moisture-absorbing surface area and wicking surface area. The number and specific surface area of ​​yarn fibers participating in moisture absorption, storage, and wicking per unit volume in the outer layer are significantly greater than those in the middle layer. The number and specific surface area of ​​moisture-absorbing yarn fibers in the middle layer are greater than those in the inner layer. Therefore, the sweat moisture absorbed by the inner layer fibers quickly accumulates and transfers to the outer layer fibers through the middle layer and gradually dissipates through the outer surface, achieving the goal of faster drying for the inner layer compared to the outer layer. This gradient of linear density differences among the first, second, and third yarns contributes to the faster drying of the inner layer compared to the outer layer, giving the fabric a one-way moisture-wicking function.

[0047] The linear density of a single fiber in the first yarn (superfine denier polyamide fiber, superfine denier polyester fiber, and superfine denier moisture-wicking modified acrylic fiber) is 0.5D to 1.0D; the linear density of a single fiber in the second yarn (section-modified polyamide fiber and section-modified polyester fiber) is 1.25D to 1.75D; and the linear density of a single fiber in the third yarn (chemical fiber) is 2.0D to 4.2D. The linear density of a single chemical fiber in the first yarn is less than that in the second yarn, which is less than that in the third yarn. Comparing the number of fibers per unit linear density yarn: the number of fibers per fiber in the first yarn is greater than that in the second yarn, which is greater than that in the third yarn. This gradient in linear density causes a significant difference in the number of fibers per unit linear density yarn, thus imparting the fabric with unidirectional moisture-wicking functionality.

[0048] The chenille functional knitted fabric obtained by this invention forms a gradient of moisture absorption, a gradient of yarn linear density, and a gradient of single fiber linear density among the three layers of fabric: inner layer, middle layer, and outer layer. The three gradients work together to enable the fabric to have a unidirectional moisture-wicking function.

[0049] Compared with the prior art, the beneficial effects of the present invention are reflected in:

[0050] 1. The chenille functional knitted fabric obtained by this invention is different from the traditional French rib knitted fabric with different gauge and the knitted corduroy fabric formed by double-fat weave process. It has the knitted corduroy effect, and the fabric also has comfortable elasticity. It is elastic but not tight and compressive to the body. It is not easy to bulge or deform after long-term wear, which will affect the appearance of the garment. The fabric has excellent anti-pilling and anti-snagging properties.

[0051] 2. The chenille functional knitted fabric obtained by this invention is breathable, moisture-wicking, and also warm.

[0052] 3. The chenille functional knitted fabric obtained by the present invention has durable, washable, quick-drying, and one-way moisture-wicking functions.

[0053] 4. The chenille functional knitted fabric obtained by this invention can be used as underwear fabric or as fabric for developing sportswear series, catering to the trend of knitted fabrics being worn as outerwear. Depending on the selected raw materials, fabrics of different price levels, including high, medium and low grades, can be developed, which has broad market application prospects. Attached Figure Description

[0054] Figure 1 This is a schematic diagram of the fabric weaving process according to an embodiment of the present invention;

[0055] Figure 2 This is a diagram showing the arrangement of knitting needles according to an embodiment of the present invention;

[0056] Figure 3This is a diagram showing the upper triangular arrangement according to an embodiment of the present invention. Detailed Implementation

[0057] The present invention will be further described in detail below with reference to embodiments and accompanying drawings.

[0058] Example 1

[0059] This embodiment proposes a chenille functional knitted fabric, the knitting yarn of which includes a first yarn, a second yarn and a third yarn. The knitted fabric includes an inner layer, a middle layer and an outer layer. The first yarn, the second yarn and the third yarn together form the inner layer of the knitted fabric, the first yarn and the second yarn together form the middle layer of the knitted fabric, and the first yarn alone forms the outer layer of the knitted fabric.

[0060] The first yarn is 8Nm all-polyester chenille yarn. Both the core and down yarns are made of ultra-fine denier, cross-section modified and hydrophilic modified polyester fibers with a cross-section and a single fiber linear density of 0.833D. The second yarn's elastic core is high-temperature resistant polyurethane fiber yarn with a linear density of 30D, and the outer covering yarn is cross-section modified polyester low-elasticity filament with a linear density of 300D and a single fiber linear density of 1.5625D. The third yarn is polyester low-elasticity filament with a linear density of 150D and a single fiber linear density of 2.083D. The high-temperature resistant polyurethane fiber yarn in the second yarn core accounts for 2.2% of the entire fabric. The weaving machine is a multi-functional small jacquard rib knitting machine, machine size 14G. The pre-setting temperature is 190℃, and the weaving structure is as follows: Figure 1 As shown, a complete circular structure is formed by six rows of knitting, with the needle arrangement as follows: Figure 2 As shown, there are 12 rows of needles, meaning the knitting needles are arranged with one high heel stitch and one low heel stitch, alternating between high and low heel stitches, forming a triangular arrangement as shown. Figure 3 As shown, during knitting, the first and fourth rows involve single-sided loop knitting with both purl and serif stitches coming out and the third yarn entering the loop, forming the main body of the inner layer of the fabric; the second row involves double-sided knitting with half a stitch each from the purl and serif stitches and the second yarn entering the loop, and the fifth row involves double-sided knitting with half a stitch each from the purl and serif stitches and the purl and serif stitches and the second yarn entering the loop, connecting the inner and outer layers of the fabric and forming the main body of the middle layer and part of the inner layer of the fabric; the third and sixth rows involve single-sided loop knitting with both purl and serif stitches coming out and the first yarn entering the loop, with the serif stitches forming the outer layer of the fabric on their own, and the serif stitches forming part of the middle layer and part of the inner layer of the fabric on their own.

[0061] The fabric preparation method in this embodiment includes the following steps in sequence:

[0062] 1) Raw material preparation: Select the first, second, and third yarn raw materials according to the designed fabric;

[0063] 2) Weaving: The selected raw material is hung on the machine for weaving. The first yarn, the second yarn and the third yarn together form the inner layer of the knitted fabric, the first yarn and the second yarn together form the middle layer of the knitted fabric, and the first yarn alone forms the outer layer of the knitted fabric. During weaving, the width cutting line is reserved for the opening and pre-setting of the subsequent process to obtain the fabric blank.

[0064] 3) Raw material inspection: The obtained fabric raw materials are cut along the cutting line and inspected at the same time before being put into storage;

[0065] 4) Dyeing and mixing: The qualified fabric blanks are unwound from the roll and loaded into the dyeing machine, and then joined into a continuous state.

[0066] 5) Pre-forming: The fabric blanks that have been joined together in the whole car are pre-formed. The pre-forming temperature is 130-190℃, the car speed is 15-25m / min, and the overfeed amount of fabric is 10-50%.

[0067] 6) Dyeing vat loading: Water is added to the dyeing vat according to the weight of the fabric blank and the bath ratio. After the pre-shaped fabric blank is loaded into the vat, the ends of the fabric are sewn into a rope loop that can be continuously operated in the dyeing vat.

[0068] 7) Pretreatment: The fabric blanks that have been put into the dyeing and finishing vat are subjected to pretreatment to obtain semi-finished fabric.

[0069] 8) Dyeing: Based on the selected fiber yarns of the fabric, a reasonable dyeing process and dyeing technology are formulated, and dyeing solution is used to dye the pre-treated fabric semi-finished products.

[0070] 9) Hot washing and cold washing: Use soap to hot wash the semi-finished fabric. The hot washing temperature is controlled at 85-98℃ and the heat preservation time is controlled at 10-20 minutes. After washing away the floating and staining of the fiber dye, it is then cold washed in water for 10-20 minutes.

[0071] 10) In-cylinder suction and drainage: Add another tank of water and use a moisture-wicking finishing liquid to perform suction and drainage finishing on the semi-finished fabric obtained in step 9). Heat the fabric to 60-80℃ and keep it at that temperature for 20-30 minutes. This step can further improve the moisture-wicking performance of the fabric.

[0072] 11) Dehydration and drying: Remove the semi-finished fabric obtained in step 10) from the vat, dehydrate it, and then dry it in a flat width.

[0073] 12) Re-setting: The semi-finished fabric is re-set to obtain a clean fabric blank. The setting temperature is 130-150℃, the machine speed is 18-30m / min, and the overfeed amount is 30-50%.

[0074] 13) Inspection of raw fabric: Inspect all raw fabrics obtained and roll them into a warehouse.

[0075] The test performance of the fabric in this embodiment is shown in Table 1.

[0076] Table 1. Fabric performance test results of Example 1

[0077]

[0078] This embodiment features durable, washable, quick-drying, and one-way moisture-wicking properties, along with a knitted corduroy effect. The fabric also offers comfortable elasticity, being stretchy without being tight or constricting. It is resistant to pilling and deformation that can affect the appearance of the garment even after prolonged wear. The fabric also boasts excellent anti-pilling and anti-snagging properties, while maintaining breathability, moisture permeability, and warmth.

[0079] Example 2

[0080] The knitting structure of the chenille functional knitted fabric in this embodiment is the same as that in Embodiment 1, except for the type and specifications of the yarn. Specifically: the first yarn is a 12Nm acrylic / polyester chenille yarn, the core yarn is ultra-fine denier cross-section modified and hydrophilic modified polyester fiber, and the down yarn is a blend of ultra-fine denier moisture-wicking modified acrylic fiber and ultra-fine denier cross-section modified and hydrophilic modified polyester fiber, wherein the proportion of acrylic fiber blend is 70%, and the linear density of a single fiber is 0.521D. The second yarn core is a low-temperature polyurethane fiber yarn with a linear density of 40D, and the outer yarn is a blend of cross-section modified polyester staple fiber and cotton fiber, wherein cotton fiber accounts for 35%, and the yarn linear density is 32S. The third yarn is a low-elastic polyester fiber filament with a linear density of 100D, and the linear density of a single fiber is 2.083D. The proportion of the second yarn core low-temperature polyurethane fiber yarn in the entire fabric is 3.5%. Select a multi-functional small jacquard rib knitting machine, machine number 18G, for weaving. Pre-set temperature: 170℃.

[0081] The test performance of the fabric in this embodiment is shown in Table 2.

[0082] Table 2. Fabric performance test results of Example 2

[0083]

[0084] The chenille functional knitted fabric in this embodiment has been tested and its performance meets the standards GB / T21655.2-2019 and GB / T21655.1-2008. It has good moisture absorption and wicking properties, as well as good physical properties and breathability.

[0085] Example 3

[0086] The fabric in this embodiment has the same structure as the fabric in Embodiment 1, except for the yarn type and specifications. Specifically: the first yarn is a 16Nm wool / cotton / nylon chenille yarn, the core yarn is a superfine denier cross-section modified polyamide fiber yarn, and the down yarn is a blend of wool and cotton fibers, with wool accounting for 70% of the blend. The linear density of a single core fiber is 0.694D. The second yarn core is a polyolefin fiber yarn with a linear density of 70D, and the outer yarn is a blend of cross-section modified polyester staple fiber and cotton fiber, with cotton accounting for 80%. The yarn linear density is 50S. The third yarn is a pure cotton fiber yarn with a linear density of 80S. The polyolefin fiber yarn in the second yarn core accounts for 6% of the total fabric. A multi-functional small jacquard double-sided knitting machine, machine number 24G, is selected for weaving. The pre-setting temperature is 140℃.

[0087] The test performance of the fabric in this embodiment is shown in Table 3.

[0088] Table 3. Fabric performance test results of Example 3

[0089]

[0090]

[0091] The chenille functional knitted fabric in this embodiment has been tested and its performance meets the standards GB / T21655.2-2019 and GB / T21655.1-2008. It has good moisture absorption and wicking properties, as well as good physical properties and breathability.

[0092] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A chenille functional knitted fabric, characterized in that: The knitting yarn includes a first yarn, a second yarn, and a third yarn. The knitted fabric includes an inner layer, a middle layer, and an outer layer. The first yarn, the second yarn, and the third yarn together form the inner layer of the knitted fabric, the first yarn and the second yarn together form the middle layer of the knitted fabric, and the first yarn alone forms the outer layer of the knitted fabric. The first yarn is a modified chenille yarn, which includes a core yarn and a down yarn. The core yarn is a modified polyester fiber or polyamide fiber yarn with an irregular cross section, and the down yarn is a blended or pure spun yarn of hydrophilic fibers. The second yarn is an elastic fiber yarn covered yarn, including an elastic core yarn and an outer covering yarn that covers the elastic core yarn in a spiral manner; The third yarn is any woven yarn; The knitted fabric is a weft-knitted fabric woven by a circular weft knitting machine. The knitting machine's needle arrangement uses one high-heel needle and one low-heel needle alternately on both the upper and lower needles. The knitting structure adopts a six-way loop knitting. The first and fourth ways use the third yarn to knit into a loop structure to form the inner layer of the fabric. The second and fifth ways use the second yarn to knit alternately on the front and back needle beds to form the middle and inner layers of the fabric. The third and sixth ways use the first yarn to knit into a loop structure to form the outer, middle, and inner layers of the fabric.

2. The chenille functional knitted fabric according to claim 1, characterized in that: The core yarn of the first yarn includes either ultra-fine denier cross-section modified polyamide fiber yarn or cross-section modified and hydrophilic polyester fiber yarn, wherein the modified cross-section includes a non-circular cross-section, a cross-section, or a serrated cross-section; the down yarn in the first yarn includes pure or blended yarn formed from at least one of wool fiber, ultra-fine denier moisture-wicking modified acrylic fiber, cotton fiber, ultra-fine denier hydrophilic modified polyester fiber, and polyamide fiber.

3. The chenille functional knitted fabric according to claim 2, characterized in that: Hydrophilic modification involves introducing a hydrophilic third monomer into the fiber preparation process for blending and copolymerization, thereby grafting hydrophilic groups into the fiber.

4. A chenille functional knitted fabric according to claim 2, characterized in that: The elastic core yarn of the second yarn is one of high-temperature resistant polyurethane fiber yarn, low-temperature polyurethane fiber yarn, or polyolefin fiber yarn; The outer sheath yarn of the second yarn is one of the following: cross-section modified polyamide fiber low elastic filament, cross-section modified polyester fiber low elastic filament, cross-section modified polyamide fiber staple fiber and cotton fiber blended yarn, or cross-section modified polyester fiber staple fiber and cotton fiber blended yarn. The cross-section modification is a non-circular cross-section such as a cross-section, a Y-shaped cross-section or a serrated cross-section. The cotton fiber accounts for 20% to 80% of the blended yarn.

5. A chenille functional knitted fabric according to claim 1, characterized in that: The linear density of the first yarn is 16Nm to 8Nm; the linear density of the elastic core of the second yarn is 20D to 140D, and its linear density is 100D to 400D when the outer covering yarn is filament, and 60S to 16S when the outer covering yarn is blended; the linear density of the third yarn is 50D to 200D when it is filament, and 120S to 32S when it is staple fiber.

6. A chenille functional knitted fabric according to claim 4, characterized in that: The linear density of a single fiber in the first yarn is 0.5D to 1.0D for ultra-fine denier polyamide fiber, ultra-fine denier polyester fiber, and ultra-fine denier moisture-wicking modified acrylic fiber; the linear density of a single fiber in the second yarn is 1.25D to 1.75D for cross-section modified polyamide fiber and cross-section modified polyester fiber; and the linear density of a single fiber in the third yarn is 2.0D to 4.2D for chemical fiber.

7. A chenille functional knitted fabric according to claim 1, characterized in that: The elastic core yarn of the second yarn accounts for 2% to 8% of the chenille functional knitted fabric.

8. A method for preparing a chenille functional knitted fabric as described in any one of claims 1-7, characterized in that: The steps are as follows: 1) Raw material preparation: Select the first, second, and third yarn raw materials according to the designed fabric; 2) Weaving: The selected raw material is hung on the machine for weaving. The first yarn, the second yarn and the third yarn together form the inner layer of the knitted fabric, the first yarn and the second yarn together form the middle layer of the knitted fabric, and the first yarn alone forms the outer layer of the knitted fabric. During weaving, the width cutting line is reserved for the opening and pre-setting of the subsequent process to obtain the fabric blank. 3) Raw material inspection: The obtained fabric raw materials are cut along the cutting line and inspected at the same time before being put into storage; 4) Dyeing and mixing: The qualified fabric blanks are unwound from the roll and loaded into the dyeing machine, and then joined into a continuous state. 5) Pre-forming: The fabric blanks that have been joined together in the whole car are pre-formed. The pre-forming temperature is 130-190℃, the car speed is 15-25m / min, and the overfeed amount of fabric is 10-50%. 6) Dyeing vat loading: Water is added to the dyeing vat according to the weight of the fabric blank and the bath ratio. After the pre-shaped fabric blank is loaded into the vat, the ends of the fabric are sewn into a rope loop that can be continuously operated in the dyeing vat. 7) Pretreatment: The fabric blanks that have been put into the dyeing and finishing vat are subjected to pretreatment to obtain semi-finished fabric. 8) Dyeing: Based on the selected fiber yarns of the fabric, a reasonable dyeing process and dyeing technology are formulated, and dyeing solution is used to dye the pre-treated fabric semi-finished products. 9) Hot washing and cold washing: Use soap to hot wash the semi-finished fabric. The hot washing temperature is controlled at 85-98℃ and the heat preservation time is controlled at 10-20 minutes. After washing away the floating dye and staining of the fibers, it is then cold washed in water for 10-20 minutes. 10) In-vacuum treatment: Add another vat of water and use a moisture-wicking finishing solution to perform moisture-wicking finishing on the semi-finished fabric obtained in step 9), raising the temperature to 60-80℃ and holding for 20-30 minutes; 11) Dehydration and drying: Remove the semi-finished fabric obtained in step 10) from the vat, dehydrate it, and then dry it in a flat, wide pattern. 12) Re-setting: Re-setting the semi-finished fabric to obtain a clean fabric blank. The setting temperature is 130-150℃, the machine speed is 18-30m / min, and the overfeed amount of fabric is 30-50%. 13) Inspection of raw fabric: Inspect all raw fabrics obtained and roll them into a warehouse.

9. The method for preparing chenille functional knitted fabric according to claim 8, characterized in that: In step 2), the weaving method is as follows: A total of six rows of knitting form a complete cyclic structure. The arrangement of the knitting needles is one high heel needle and one low heel needle, with high and low heel needles arranged alternately. The first and fourth rows are single-sided knitting with both high and low heel needles coming out and the third yarn entering the loop, forming the main body of the inner layer of the fabric. The second row is double-sided knitting with the low heel needles of both knitting needles coming out half a needle and the second yarn entering the loop. The fifth row is double-sided knitting with the low heel needles of knitting needles and the high heel needles of knitting needles coming out half a needle and the second yarn entering the loop, connecting the inner and outer layers of the fabric and forming the main body of the middle layer and part of the inner layer of the fabric. The third and sixth rows are single-sided knitting with both high and low heel needles coming out and the first yarn entering the loop, with the high heel needles forming the outer layer of the fabric alone, and the low heel needles forming part of the middle layer and part of the inner layer of the fabric.

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