Weft knitting suede pit strip rib fabric as well as preparation method and application thereof

Abstract

The invention provides a weft-knitted suede pit strip rib fabric and a preparation method and application thereof, the weft-knitted suede pit strip rib fabric comprises a surface texture layer, a bottom layer and a middle layer connecting the surface texture layer and the bottom layer; wherein the surface texture layer comprises a pit strip texture structure; spun yarns adopted by the surface texture layer comprise first spun yarns and second spun yarns, and the first spun yarns comprise one or a combination of more of 100% modal, cotton / modal blended yarns and cotton / tencel blended yarns; spun yarns adopted by the bottom layer comprise third spun yarns and fourth spun yarns. The weft-knitted suede pit strip rib fabric provided by the invention has silk soft feeling and fine and smooth micro-velvet, and meanwhile, the front surface, namely the surface texture layer, has a pit strip texture effect, and can meet comfort requirements such as moisture absorption and ventilation and health requirements. In addition, the fabric has excellent color fastness and dimensional stability and is not prone to fuzzing and pilling.

Description

Technical Field

[0001] This invention relates to a weft-knitted suede-like ribbed fabric, its preparation method and application, belonging to the field of textile fabric technology. Background Technology

[0002] Ribbed knit fabric is soft and elastic to the touch, beautiful and comfortable, and is an important fabric in the knitwear market for spring and autumn. It is widely used in daily life, training, and sportswear, especially in women's wear and casual suits. Currently, the main materials of the products on the market are chemical fiber filaments + spandex, which generally have poor color fastness, especially black, which is prone to fading, color inaccuracy, and color difference problems. In addition, its breathability is poor, which makes it difficult to meet health needs.

[0003] Therefore, researching, developing, and providing a weft-knitted suede-like ribbed fabric that combines silky softness, delicate micro-pile texture, and ribbed surface effect, while ensuring the fabric's comfort and health requirements, has become an urgent technical problem to be solved in this field. Summary of the Invention

[0004] To address the aforementioned shortcomings and deficiencies, the present invention aims to provide a weft-knitted suede-like ribbed fabric, its preparation method, and its applications. The weft-knitted suede-like ribbed fabric provided by this invention combines a silky softness, delicate micro-pile texture, and a ribbed surface effect, meeting comfort and health requirements such as moisture absorption and breathability.

[0005] To achieve the above objectives, on the one hand, the present invention provides a weft-knitted imitation suede ribbed fabric, wherein the weft-knitted imitation suede ribbed fabric includes a surface texture layer, a bottom layer, and an intermediate layer connecting the surface texture layer and the bottom layer;

[0006] The surface texture layer includes a pitted structure;

[0007] The yarn used in the surface texture layer includes a first yarn and a second yarn. The first yarn includes one or a combination of several of the following: 100% Modal, cotton / Modal blended yarn, and cotton / Tencel blended yarn.

[0008] The bottom layer uses a combination of third and fourth spinning processes.

[0009] As a specific embodiment of the weft-knitted imitation suede ribbed fabric described above in this invention, the second yarn includes chemical fiber core-spun yarn, etc.

[0010] In one specific embodiment of the weft-knitted imitation suede ribbed fabric described above in this invention, the yarn count of the second yarn is 50-100D.

[0011] As a specific embodiment of the weft-knitted imitation suede ribbed fabric described above in this invention, the core yarn of the chemical fiber core-spun yarn includes spandex, etc.

[0012] As a specific embodiment of the weft-knitted imitation suede ribbed fabric described above in this invention, the spandex yarn count is 20-40D.

[0013] As a specific embodiment of the weft-knitted imitation suede ribbed fabric described above in this invention, the yarn count of the first yarn is 30-60 English count.

[0014] As a specific embodiment of the weft-knitted imitation suede ribbed fabric described above in this invention, the third yarn includes chemical fiber filaments, etc., and the fourth yarn includes spandex filaments, etc.

[0015] As a specific embodiment of the weft-knitted imitation suede ribbed fabric of the present invention, the yarn count of the third yarn is 50-150D, and the yarn count of the fourth yarn is 20-40D.

[0016] As a specific embodiment of the weft-knitted suede-like ribbed fabric described above in this invention, the surface texture layer and the bottom layer are connected by connecting yarns, and the connecting yarns are connected to the first spinning yarn, the second spinning yarn, and the third spinning yarn.

[0017] As a specific embodiment of the weft-knitted imitation suede ribbed fabric described above in this invention, the connecting yarn includes chemical fiber filaments, etc.; more preferably, the yarn count of the connecting yarn is 30-100D.

[0018] As a specific embodiment of the weft-knitted imitation suede ribbed fabric described above in this invention, the ribbed weave structure includes a 1*1 weave structure, a 2*2 weave structure, a 3*2 weave structure, or a 4*2 weave structure, etc., that is, the surface texture layer is formed by using 1*1, 2*2, 3*2, 4*2, etc. weave structures to create the ribbed texture effect.

[0019] As a specific embodiment of the weft-knitted imitation suede ribbed fabric described above in this invention, the weight of the weft-knitted imitation suede ribbed fabric is 250-400 g / m². 2 .

[0020] On the other hand, the present invention also provides a method for preparing the weft-knitted imitation suede ribbed fabric as described above, including a knitting process and a dyeing and finishing process. The knitting process adopts an 8-die knitting method, wherein the upper and lower die yarns are aligned. In the 1st and 5th die, the upper die is woven with the third and fourth yarns to form loops; in the 2nd and 6th die, the lower die is woven with the second yarn to form floats and loops; in the 3rd and 7th die, the lower die is woven with the first yarn to form floats and loops, which complements the 2nd and 6th die yarns; in the 4th and 8th die yarns, the upper and lower die yarns are woven with connecting yarns to form the middle layer to form loops, and the two die yarns complement each other.

[0021] In the preparation method described above in this invention, the upper and lower plates of the fourth and eighth molds are used to form the connecting yarn of the intermediate layer through weaving loops, so that the connecting yarn is looped together with the loops of the first, second, and third spinning yarns in a looping manner, thereby playing a connecting role.

[0022] As a specific embodiment of the preparation method described above in this invention, the yarn length range of the first and fifth molds is 10-15cm, the yarn length range of the second and sixth molds is 6-10cm, the yarn length range of the third and seventh molds is 6-9cm, and the yarn length range of the fourth and eighth molds is 10-13cm.

[0023] In a specific embodiment of the preparation method described above in this invention, during the knitting process, the machine speed is controlled at 14-18 r / min and the yarn tension is 8-12 cN.

[0024] As a specific embodiment of the preparation method described above in this invention, the dyeing and finishing process includes sequentially performing a pre-setting process, a singeing process, a sand washing process, a dyeing process, an enzyme washing process, a dehydration process, a drying process, and a setting process on the raw fabric obtained from the knitting and weaving process.

[0025] The sand washing process includes a first sand washing process or a second sand washing process, etc. The first sand washing process includes: placing the singeed fabric in the first sand washing solution at a bath ratio of 1:(6-10) and treating it at 95-110℃ for 90-120 minutes.

[0026] The second sand washing process includes: placing the singeed fabric in the second sand washing solution at a bath ratio of 1:(6-10) and treating it at 80-110℃ for 60-80 minutes.

[0027] In one specific embodiment of the preparation method described above in this invention, the first sand washing solution used in the first sand washing process has a pH value of 2.0-2.5 and contains 6-8 g / L of a first sand washing aid. In some embodiments of this invention, the first sand washing aid is an acidic aid, such as 98 wt% fuming sulfuric acid or an organic acid. The organic acid may be, for example, citric acid and / or acetic acid. In some embodiments of this invention, the first sand washing solution contains 6-8 g / L of the first sand washing aid, sodium carbonate, a penetrant, and water. This invention does not specify the exact substance and amount of the penetrant in the first sand washing solution, nor the amount of sodium carbonate, etc., and these can be reasonably selected and adjusted as needed.

[0028] In one specific embodiment of the preparation method described above in this invention, the second sand washing solution used in the second sand washing process has a pH value of 11.5-12.5 and contains 10-25 g / L of a second sand washing auxiliary agent. In some embodiments of this invention, the second sand washing auxiliary agent is an alkaline auxiliary agent, such as NaOH. In some embodiments of this invention, the second sand washing solution contains 10-25 g / L of the second sand washing auxiliary agent, 3-6 g / L of H2O2 (27.5 wt%), a penetrant, and water. Hydrogen peroxide, as a strong oxidant, exhibits significantly enhanced chemical activity in an alkaline environment, thus facilitating the sand washing treatment of the yarn. This invention does not specify the exact substance or amount of the penetrant in the second sand washing solution; it can be reasonably selected and adjusted as needed.

[0029] In the preparation method described above in this invention, the first sand washing process uses a first sand washing solution with a pH value of 2.0-2.5, which contains an acidic auxiliary agent. This auxiliary agent can cause a certain degree of strong damage to the first yarn, such as modal, causing the damaged first yarn fibers to break and detach from the yarn body in the high-speed washing tank, forming fine fuzz on the fabric. The second sand washing process uses a second sand washing solution with a pH value of 11.5-12.5, which contains an alkaline auxiliary agent. This auxiliary agent can damage the first yarn. The dense outer layer of materials like Modal, with its alkali-swelling effect, causes the first yarn, such as Modal, to fibrillate, producing finer split fibrils. This results in finer fibril fibers on the fabric surface, creating an ultra-fine, dense pile. The internal reflected light is distributed more evenly and delicately on the surface, giving it a matte, semi-gloss texture. It is soft to the touch, with a gentle and natural color, and is fluffy and elastic. The invisible yet tangible skin-friendly and gentle feel makes the final fabric feel like a "second skin."

[0030] Therefore, the present invention employs a first spinning and sand washing process containing modal and other raw materials, so that the final finished fabric has a silky softness, delicate micro-fleece, soft and skin-friendly feel. In addition, the present invention uses a ribbed weaving method so that the finished fabric also has a ribbed texture effect on the front.

[0031] In one specific embodiment of the preparation method described above in this invention, the pre-forming process involves a pre-forming temperature of 195-205°C, a machine speed of 15-25 m / min, a number of passes of 1-2, a width of 135-165 cm, and an overfeed of 5-20%. In some embodiments of this invention, the pre-forming process can be performed on a pre-forming machine.

[0032] In one specific embodiment of the preparation method described above in this invention, the singeing process involves a singeing temperature of 1400-1500℃ and a machine speed of 80-85 m / min. In some embodiments of this invention, the singeing process is a front-side singeing process, which can be performed on a singeing machine.

[0033] As a specific embodiment of the preparation method described above in this invention, the staining process adopts a conventional double staining process, followed by dehydration, drying, and then an enzyme washing process, etc.

[0034] As a specific embodiment of the preparation method described above in this invention, the enzyme washing process includes: placing the dyed fabric in an enzyme washing solution at a bath ratio of 1:(6-8) and treating it at 45-55℃ for 45-90 minutes; wherein the enzyme washing solution contains 2.0-4.0 g / L of cellulose bio-enzyme.

[0035] In one specific embodiment of the preparation method described above in this invention, the setting process includes a setting temperature of 120-150℃, a machine speed of 18-20 m / min, a width of 155-175 cm, and an overfeed of 20-40%. In some embodiments of this invention, the setting process is performed on a setting machine.

[0036] On another note, the present invention also provides the application of the above-described weft-knitted suede-like ribbed fabric as a fabric for sportswear or casual wear.

[0037] Compared with the prior art, the beneficial technical effects achieved by the present invention include at least the following:

[0038] The weft-knitted suede-like ribbed fabric provided by this invention has a silky soft feel and a delicate, slightly velvety texture. Its front side, the surface texture layer, has a ribbed texture effect, which not only increases the sense of texture and reduces monotony, providing visual impact, but also increases lateral elasticity, making the fabric more form-fitting and less prone to deformation. Furthermore, the ribbed texture effect (e.g., vertical stripes) has a slimming effect. In addition, this fabric meets the requirements for moisture absorption, breathability, comfort, and health, and has excellent colorfastness, dimensional stability, and is not prone to pilling. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 This is a simplified structural diagram of the weft-knitted suede-like ribbed fabric provided in an embodiment of the present invention.

[0041] Figure 2 This is a weft-knitted imitation suede ribbed fabric fabric provided in Embodiment 1 of the present invention.

[0042] Figure 3 This is an electron microscope image of Modal that has not undergone the first sand washing process in Embodiment 1 of the present invention.

[0043] Figure 4 This is an electron microscope image of Modal after sand washing in the first sand washing process in Embodiment 1 of the present invention.

[0044] Figure 5 This is a physical image of the weft-knitted suede-like ribbed fabric provided in Embodiment 1 of the present invention.

[0045] Figure 6 This is a weft-knitted imitation suede ribbed fabric fabric provided in Embodiment 2 of the present invention.

[0046] Explanation of main icon numbers:

[0047] 1. Facial texture layer; 2. Middle layer; 3. Bottom layer. Detailed Implementation

[0048] It should be noted that the term "comprising" and any variations thereof in the specification, claims, and accompanying drawings of this invention are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or devices.

[0049] The "range" disclosed in this invention is given in the form of a lower limit and an upper limit. It can be one or more lower limits and one or more upper limits, respectively. A given range is defined by selecting a lower limit and an upper limit. The selected lower and upper limits define the boundaries of the particular range. All ranges defined in this way are composable, meaning that any lower limit can be combined with any upper limit to form a range. For example, if ranges of 60-120 and 80-110 are listed for specific parameters, it is also expected that ranges of 60-110 and 80-120 are also expected. Furthermore, if the listed minimum range values ​​are 1 and 2, and the listed maximum range values ​​are 3, 4, and 5, then the following ranges are all expected: 1-3, 1-4, 1-5, 2-3, 2-4, and 2-5.

[0050] In this invention, unless otherwise specified, the numerical range "ab" represents a shortened representation of any combination of real numbers between a and b, where a and b are real numbers. For example, the numerical range "0-5" indicates that all real numbers between "0-5" have been listed in this invention, and "0-5" is simply a shortened representation of these numerical combinations.

[0051] In this invention, unless otherwise specified, all embodiments and preferred embodiments mentioned in this invention can be combined with each other to form new technical solutions.

[0052] In this invention, unless otherwise specified, all technical features and preferred features mentioned in this invention can be combined with each other to form new technical solutions.

[0053] In this invention, unless otherwise specified, all steps mentioned herein may be performed sequentially or randomly, but are preferably performed sequentially. For example, if the method includes steps (a) and (b), it means that the method may include steps (a) and (b) performed sequentially, or it may include steps (b) and (a) performed sequentially. For example, if the method may also include step (c), it means that step (c) may be added to the method in any order. For example, the method may include steps (a), (b), and (c), or it may include steps (a), (c), and (b), or it may include steps (c), (a), and (b), etc.

[0054] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying tables, drawings, and embodiments. The embodiments described below are some, but not all, embodiments of this invention, and are only used to illustrate the invention, and should not be considered as limiting the scope of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention. Where specific conditions are not specified in the embodiments, conventional conditions or conditions recommended by the manufacturer shall be followed. Reagents or instruments whose manufacturers are not specified are all conventional products that can be purchased commercially.

[0055] Example 1

[0056] This embodiment provides a weft-knitted suede-like ribbed fabric, the simplified structural diagram of which is shown below. Figure 1 As shown, from Figure 1 As can be seen from the above, the weft-knitted imitation suede ribbed fabric includes a surface texture layer 1, a bottom layer 3, and an intermediate layer 2 connecting the surface texture layer 1 and the bottom layer 3.

[0057] The surface texture layer 1 includes a ribbed weave structure; the yarn used in the surface texture layer 1 includes a first yarn (denoted as A) and a second yarn (denoted as B), the first yarn is 100% Modal with a yarn count of 50S, the second yarn is a chemical fiber core-spun yarn with a yarn count of 50D, the core yarn of the chemical fiber core-spun yarn is spandex with a yarn count of 30D;

[0058] The bottom layer uses a third yarn (denoted as C) and a fourth yarn (denoted as D). The third yarn is a chemical fiber filament with a yarn count of 75D, and the fourth yarn is a spandex filament with a yarn count of 20D.

[0059] The surface texture layer 1 and the bottom layer 3 are connected by a connecting yarn, and the connecting yarn is connected to the first spinning, the second spinning and the third spinning; wherein, the connecting yarn is a chemical fiber filament with a yarn count of 75D.

[0060] The preparation method of the weft-knitted imitation suede ribbed fabric in this embodiment includes a knitting process and a dyeing and finishing process. The specific process includes: weaving → fabric inspection (opening and rolling) → fabric preparation → pre-setting → front singeing → sand washing → dyeing → enzyme washing → dehydration → arranging → SANT drying → mid-term inspection → setting → post-inspection.

[0061] Among them, weaving (as shown in the loom pattern) Figure 2As shown, it has a 2*2 weave structure: it adopts an 8-die weave, in which the upper and lower dies are aligned. In the 1st and 5th dies, the upper dies are woven with chemical fiber filaments and spandex yarns to form loops; in the 2nd and 6th dies, the lower dies are woven with chemical fiber core-spun yarns to form floats and loops; in the 3rd and 7th dies, the lower dies are woven with 100% modal yarns to form floats and loops, which complements the 2nd and 6th dies; in the 4th and 8th dies, the upper and lower dies are woven with connecting yarns to form the middle layer, that is, chemical fiber filaments with a yarn count of 75D to form loops, which complement the two dies.

[0062] The yarn length range for the first and fifth molds is 12.5cm, the yarn length range for the second and sixth molds is 7.7cm, the yarn length range for the third and seventh molds is 7cm, and the yarn length range for the fourth and eighth molds is 11.5cm.

[0063] The machine speed is controlled at 18 r / min, the yarn tension is 10 cN, and the machine size used is a 28G double-sided machine. During circular knitting, the fabric process must be inspected for reverse stretching, horizontal lines, wrinkles, and various defects caused by spandex. The knitting equipment used includes FEED machines equipped with positive yarn feed devices.

[0064] Fabric inspection (width opening and rolling) and fabric preparation: carried out in accordance with the standard procedures.

[0065] Pre-setting: Pre-setting is performed on a pre-setting machine. The pre-setting temperature is 200℃, the machine speed is 20m / min, the number of times is 1, the width is 155cm, and the overfeed is 15%.

[0066] Front singeing: This is done on a singeing machine at a temperature of 1400℃ and a speed of 80m / min.

[0067] Sand washing: The first sand washing process is adopted, which specifically includes: placing the singeed fabric in the first sand washing solution at a liquor ratio of 1:10 and treating it at 100℃ for 110 minutes; wherein, the first sand washing solution contains 6 g / L of a first sand washing auxiliary agent, which is a mixture of citric acid and acetic acid with a pH value of 2.5. The specific composition of the first sand washing solution is shown in Table 1, and the solvent is water.

[0068] Table 1 Composition of the first sand washing solution

[0069]

[0070]

[0071] Staining: A conventional double staining process was used.

[0072] Enzyme washing: The dyed fabric was placed in an enzyme washing solution at a liquor ratio of 1:8 and treated at 55°C for 60 minutes; wherein the enzyme washing solution contained 2.5 g / L of cellulase. The specific composition of the enzyme washing solution is shown in Table 2, and the solvent is water.

[0073] Table 2 Composition of enzyme washing solution

[0074] Ingredients concentration Sodium acetate (NaAc) 0.5g / L Acetic acid HAc 0.5g / L Fiberlife 500, a cellulose bio-enzyme (Novozymes (China) Investment Co., Ltd.) 2.5g / L

[0075] Dehydration, arrangement, SANT drying, and intermediate inspection: all were carried out according to standard procedures.

[0076] Setting: Setting is performed on a setting machine at a setting temperature of 130℃, a machine speed of 20m / min, a width of 165cm, and an overfeed of 30%. The composition of the setting solution is shown in Table 3, and the solvent is water.

[0077] Table 3 Composition of the finishing solution

[0078] Ingredients concentration EMULSION 4001S 40g / L FERAN ICS 20g / L SECURON PFI 15g / L

[0079] Post-inspection: The fabric is inspected to complete the preparation of the weft-knitted imitation suede ribbed fabric.

[0080] Routine tests were conducted on the finished weft-knitted suede-like ribbed fabric.

[0081] 1. Tests were conducted on conventional physicochemical properties such as color fastness, dimensional stability, and pilling. The test results are shown in Table 4.

[0082] Table 4 Results of tests on conventional physicochemical indicators

[0083]

[0084]

[0085] 2. Weight index test.

[0086] Tests show that the weight of the weft-knitted suede-like ribbed fabric provided in this embodiment is 340 g / m². 2 .

[0087] 3. The Modal used in this embodiment was sand-washed separately using the first sand-washing process. Then, electron microscopy analysis was performed on the Modal without the first sand-washing process and the Modal after the first sand-washing process. The obtained electron micrographs are shown below. Figure 3 and Figure 4 As shown. Comparison Figure 3 and Figure 4It is known that the pH value of the first sand washing solution used in the first sand washing process is 2.5, and it contains acidic auxiliaries. These auxiliaries can cause a certain degree of strong damage to Modal, causing the strong first spinning fibers to break and detach from the yarn body in the high-speed washing tank, and forming fine fluff on the fabric.

[0088] 4. A physical image of the weft-knitted suede-like ribbed fabric provided in this embodiment is shown below. Figure 5 As shown. From Figure 5 As can be seen, this weft-knitted imitation suede ribbed fabric has a silky soft feel and a delicate, slightly velvety texture. At the same time, its front side, i.e., the surface texture layer, has a ribbed texture effect, which can increase the sense of texture and layering.

[0089] Example 2

[0090] This embodiment provides a weft-knitted suede-like ribbed fabric, the simplified structural diagram of which is shown below. Figure 1 As shown, from Figure 1 As can be seen from the above, the weft-knitted imitation suede ribbed fabric includes a surface texture layer 1, a bottom layer 3, and an intermediate layer 2 connecting the surface texture layer 1 and the bottom layer 3.

[0091] The surface texture layer 1 includes a ribbed weave structure; the yarn used in the surface texture layer 1 includes a first yarn (denoted as A) and a second yarn (denoted as B), the first yarn is 100% Modal with a yarn count of 40S, the second yarn is a chemical fiber core-spun yarn with a yarn count of 50D / 36F (30D), the core yarn of the chemical fiber core-spun yarn is spandex with a yarn count of 30D;

[0092] The bottom layer uses a third yarn (denoted as C) and a fourth yarn (denoted as D). The third yarn is a chemical fiber filament with a yarn count of 75D / 72F, and the fourth yarn is a spandex filament with a yarn count of 20D.

[0093] The surface texture layer 1 and the bottom layer 3 are connected by a connecting yarn (denoted as E), and the connecting yarn is connected to the first spinning, the second spinning and the third spinning; wherein, the connecting yarn is a chemical fiber filament with a yarn count of 30D / 12F.

[0094] The preparation method of the weft-knitted imitation suede ribbed fabric in this embodiment includes a knitting process and a dyeing and finishing process. The specific process includes: weaving → fabric inspection (opening and rolling) → fabric preparation → pre-setting → front singeing → sand washing → dyeing → enzyme washing → dehydration → arranging → SANT drying → mid-term inspection → setting → post-inspection.

[0095] Among them, weaving (as shown in the loom pattern) Figure 6As shown, it has a 4*2 weave structure: it adopts an 8-die weave method, in which the upper and lower dies are aligned. In the 1st and 5th dies, the upper dies are woven with chemical fiber filaments and spandex yarns to form loops; in the 2nd and 6th dies, the lower dies are woven with chemical fiber core-spun yarns to form floats and loops; in the 3rd and 7th dies, the lower dies are woven with 100% modal yarns to form floats and loops, which complements the 2nd and 6th dies; in the 4th and 8th dies, the upper and lower dies are woven with connecting yarns to form the middle layer, that is, chemical fiber filaments with a yarn count of 30D / 12F to form loops, which complement the two dies.

[0096] The yarn length range for the first and fifth molds is 13cm, for the second and sixth molds it is 9cm, for the third and seventh molds it is 6.5cm, and for the fourth and eighth molds it is 10.5cm.

[0097] The machine speed is controlled at 18 r / min, the yarn tension is 10 cN, and the machine size used is a 28G double-sided machine. During circular knitting, the fabric process must be inspected for reverse stretching, horizontal lines, wrinkles, and various defects caused by spandex. The knitting equipment used includes FEED machines equipped with positive yarn feed devices.

[0098] Fabric inspection (width opening and rolling) and fabric preparation: carried out in accordance with the standard procedures.

[0099] Pre-setting: Pre-setting is performed on a pre-setting machine. The pre-setting temperature is 205℃, the machine speed is 20m / min, the number of times is 1, the width is 165cm, and the overfeed is 20%.

[0100] Front singeing: This is done on a singeing machine at a temperature of 1400℃ and a speed of 80m / min.

[0101] Sand washing: A second sand washing process is adopted, which specifically includes: placing the singeed fabric in the second sand washing solution at a liquor ratio of 1:10 and treating it at 95℃ for 80 minutes; wherein, the second sand washing solution contains 10g / L of a second sand washing auxiliary agent (which is NaOH), and the pH value is 12. The specific composition of the second sand washing solution is shown in Table 5, and the solvent is water.

[0102] Table 5 Composition of the Second Sand Washing Solution

[0103] Ingredients concentration <![CDATA[H2O2(27.5wt%)]]> 6g / L SKS penetrant 0.5g / L NaOH 10g / L

[0104] Staining: A conventional double staining process was used.

[0105] Enzyme washing: The dyed fabric was placed in an enzyme washing solution at a liquor ratio of 1:8 and treated at 55°C for 60 minutes; wherein the enzyme washing solution contained 2.5 g / L of cellulase. The specific composition of the enzyme washing solution is shown in Table 6, and the solvent is water.

[0106] Table 6 Composition of Enzyme Washing Solution

[0107] Ingredients concentration Sodium acetate (NaAc) 0.5g / L Acetic acid HAc 0.5g / L Fiberlife 500, a cellulose bio-enzyme (Novozymes (China) Investment Co., Ltd.) 2.5g / L

[0108] Dehydration, arrangement, SANT drying, and intermediate inspection: all were carried out according to standard procedures.

[0109] Setting: Setting is performed on a setting machine at a setting temperature of 130℃, a machine speed of 20m / min, a width of 165cm, and an overfeed of 30%. The composition of the setting solution is shown in Table 7, and the solvent is water.

[0110] Table 7 Composition of the finishing solution

[0111] Ingredients concentration EMULSION 4001S 40g / L FERAN ICS 20g / L SECURON PFI 15g / L

[0112] Post-inspection: The fabric is inspected to complete the preparation of the weft-knitted imitation suede ribbed fabric.

[0113] Routine tests were conducted on the finished weft-knitted suede-like ribbed fabric.

[0114] 1. Tests were conducted on conventional physicochemical indicators such as color fastness, dimensional stability, and pilling. The test results are shown in Table 8.

[0115] Table 8 Results of tests on conventional physicochemical indicators

[0116]

[0117]

[0118] 2. Weight index test.

[0119] Tests show that the weight of the weft-knitted suede-like ribbed fabric provided in this embodiment is 320 g / m². 2 .

[0120] In summary, the weft-knitted suede-like ribbed fabric provided in this embodiment of the invention has a silky soft feel, delicate micro-fleece, and a soft, skin-friendly texture. Its front side, i.e., the surface texture layer, has a ribbed texture effect, which not only increases the sense of texture and reduces monotony, providing visual impact, but also increases lateral elasticity, making the fabric more conform to the body shape and less prone to deformation. Furthermore, the ribbed texture effect (e.g., vertical stripes) has a slimming effect. In addition, this fabric meets the requirements for moisture absorption, breathability, comfort, and health, and has excellent color fastness, dimensional stability, and is not prone to pilling.

[0121] The above description is merely a specific embodiment of the present invention and should not be construed as limiting the scope of the invention. Therefore, any substitution of equivalent components or equivalent changes and modifications made within the scope of protection of this patent should still fall within the scope of this patent. Furthermore, the technical features, technical features and technical inventions, and technical inventions in this invention can be freely combined and used.

Claims

1. A weft-knitted suede-like ribbed fabric, characterized in that, The weft-knitted suede-like ribbed fabric includes a surface texture layer, a bottom layer, and an intermediate layer connecting the surface texture layer and the bottom layer. The surface texture layer includes a pitted structure; The yarn used in the surface texture layer includes a first yarn and a second yarn. The first yarn includes one or a combination of 100% Modal, cotton / Modal blended yarn and cotton / Tencel blended yarn. The bottom layer uses a combination of third and fourth spinning processes.

2. The weft-knitted suede-like ribbed fabric according to claim 1, characterized in that, The second type of spinning includes core-spun chemical fiber yarn; Preferably, the yarn count of the second spinning process is 50-100D; Preferably, the core yarn of the chemical fiber core-spun yarn includes spandex; more preferably, the spandex yarn count is 20-40D.

3. The weft-knitted suede-like ribbed fabric according to claim 1 or 2, characterized in that, The first yarn has a count of 30-60 English count.

4. The weft-knitted suede-like ribbed fabric according to claim 1, characterized in that, The third spinning includes chemical fiber filaments, and the fourth spinning includes spandex filaments; Preferably, the yarn count of the third spinning is 50-150D, and the yarn count of the fourth spinning is 20-40D.

5. The weft-knitted suede-like ribbed fabric according to claim 1, characterized in that, The surface texture layer and the bottom layer are connected by connecting yarns, and the connecting yarns are connected to the first spinning, the second spinning and the third spinning. Preferably, the connecting yarn comprises chemical fiber filaments; more preferably, the yarn count of the connecting yarn is 30-100D.

6. The weft-knitted suede-like ribbed fabric according to claim 1 or 2, characterized in that, The grooved strip structure includes a 1*1 structure, a 2*2 structure, a 3*2 structure, or a 4*2 structure.

7. The weft-knitted suede-like ribbed fabric according to any one of claims 1-2 and 4-5, characterized in that, The weight of the weft-knitted suede-like ribbed fabric is 250-400 g / m². 2 .

8. A method for preparing a weft-knitted suede-like ribbed fabric as described in any one of claims 1-7, comprising a knitting process and a dyeing and finishing process, characterized in that, The knitting process employs an 8-die knitting method, in which the upper and lower die knitting needles are aligned. In the 1st and 5th dies, the upper die is woven with the third and fourth yarns to form loops; in the 2nd and 6th dies, the lower die is woven with the second yarn to form floats and loops; in the 3rd and 7th dies, the lower die is woven with the first yarn to form floats and loops, complementing the 2nd and 6th dies; in the 4th and 8th dies, the upper and lower die knitting needles are woven with connecting yarns used to form the intermediate layer to form loops, complementing the 2nd and 6th dies.

9. The preparation method according to claim 8, characterized in that, The yarn length range of the first and fifth molds is 10-15cm, the yarn length range of the second and sixth molds is 6-10cm, the yarn length range of the third and seventh molds is 6-9cm, and the yarn length range of the fourth and eighth molds is 10-13cm. Preferably, in the knitting process, the machine speed is controlled at 14-18 r / min and the yarn tension is 8-12 cN.

10. The preparation method according to claim 8 or 9, characterized in that, The dyeing and finishing process includes sequentially performing pre-setting, singeing, sand washing, dyeing, enzyme washing, dehydration, drying and setting processes on the raw fabric obtained from the knitting process. The sand washing process includes a first sand washing process or a second sand washing process. The first sand washing process includes: placing the singeed fabric in a first sand washing solution at a bath ratio of 1:(6-10) and treating it at 95-110℃ for 90-120 minutes; preferably, the pH value of the first sand washing solution is 2.0-2.5, and it contains 6-8 g / L of a first sand washing auxiliary agent. The second sand washing process includes: placing the singeed fabric in the second sand washing solution at a bath ratio of 1:(6-10) and treating it at 80-110℃ for 60-80 minutes; Preferably, the second sand washing solution has a pH value of 11.5-12.5 and contains 10-25 g / L of a second sand washing aid.

11. The preparation method according to claim 8 or 9, characterized in that, In the predetermined process, the predetermined temperature is 195-205℃, the machine speed is 15-25m / min, the number of cycles is 1-2, the width is 135-165cm, and the overfeed is 5-20%. Preferably, in the singeing process, the singeing temperature is 1400-1500℃ and the machine speed is 80-85m / min; Preferably, the enzyme washing process includes: placing the dyed fabric in an enzyme washing solution at a bath ratio of 1:(6-8) and treating it at 45-55℃ for 45-90 minutes; wherein the enzyme washing solution contains 2.0-4.0 g / L of cellulosic enzymes; Preferably, in the shaping process, the shaping temperature is 120-150℃, the machine speed is 18-20m / min, the width is 155-175cm, and the overfeed is 20-40%.

12. The application of the weft-knitted suede-like ribbed fabric according to any one of claims 1-7 as a fabric for sportswear or casual wear.

Images