Production method of shell for filler textile

Abstract

The invention provides a production method of a shell for a filler textile, the shell comprises a shell fabric and a lining which are connected through a plurality of connecting yarns, all the connecting yarns are distributed at intervals along the thickness direction of the shell, the production method comprises the following steps: weaving the shell fabric and the lining which are connected through the connecting yarns by adopting an integrated weaving method, and carrying out heat treatment, the connecting yarn comprises base yarn and functional auxiliary yarn, and the functional auxiliary yarn is selected from hot melting yarn or heat shrinkage yarn with the heat shrinkage rate larger than or equal to 20%. In the application, the heat-shrinkable yarns can reserve the slack amount during weaving, and the heat-shrinkable yarns shrink to tighten the shell fabric and the lining during heat treatment, so that the structural compactness is enhanced, the pressure resistance of the filler textile is improved, and the problem of non-uniformity of the filler is avoided; the hot melting yarns can be fused and bonded with the shell fabric and the lining after heat treatment, so that local reinforcing nodes are formed, the structural tightness is enhanced, the pressure resistance of the filler textile is improved, and the problem of non-uniformity of the filler is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of textiles, and in particular relates to a production method for a shell of a filling textile. Background Art

[0002] Filled textiles are textiles that have polyester fibers, down, or other fillings placed inside a textile shell to increase warmth, comfort, and functionality. Common examples of filled textiles include quilts, down jackets, cushions, and pillows. These fillings are placed inside the shell to support and protect the internal structure.

[0003] The shell of a filled textile is typically sewn together from individually cut fabrics. A filling port is reserved, through which polyester fiber, down, or other fillers are placed into the shell's internal cavity before sewing. This method has the following drawbacks: The process is cumbersome, requiring the cutting and sewing of multiple layers of fabric, which increases labor costs; filler residue is easily left at the seams, leading to problems such as down oozing through the seams and insufficient strength; the seams are prone to uneven stitching and uneven filling, affecting the product's aesthetics and service life; and complex three-dimensional cavity designs are difficult to achieve.

[0004] Related technologies have attempted to replace sewing with bonding or hot pressing. However, the edges of the bulging fabrics are prone to wrinkling after bonding, resulting in loose adhesion, easy debonding after repeated washings, poor air permeability, and adhesive contamination.

[0005] In order to solve the above technical problems, the relevant technology adopts an integrated weaving technology to form a filling space between the face cloth and the lining cloth, and reserves notches at the edges of the face cloth and the lining cloth. The notches are filled and bonded by filling strips to prevent the face cloth and the lining cloth from swelling after filling, resulting in uneven adhesion of the filling openings. The notches are convenient for cleaning the residual down in the filling openings, preventing the residual down from affecting the adhesion. The filling strips are provided for sealing and reinforced with stitches. The filling strips can prevent adhesion and wrinkles caused by surface bulges after filling. The adhesive plays a role in sealing and preventing down from drilling in. During washing, the stitches replace the adhesive to withstand the twisting force, thereby improving the wash resistance and anti-down drilling effect. However, when using this method to produce filled textiles, the uniformity of the filling distribution needs to be improved, and the pressure resistance needs to be further improved. Summary of the Invention

[0006] The present invention provides a method for producing a shell for a filled textile, so as to improve the compression resistance of the textile and the uniformity of the distribution of the filler.

[0007] In order to solve the above technical problems, the technical solutions of the present invention are as follows: The present invention provides a method for producing a shell for a filling textile, wherein the shell comprises a face fabric and a lining fabric connected by a plurality of connecting yarns, wherein all the connecting yarns are spaced apart along the thickness direction of the shell, and the production method comprises the following steps: The shell is obtained by weaving the face cloth and the lining cloth connected by the connecting yarn using an integrated weaving method and performing heat treatment. The connecting yarn includes a base yarn and a functional auxiliary yarn. The functional auxiliary yarn is a hot-melt yarn or a heat-shrinkage yarn with a heat shrinkage rate greater than or equal to 20%.

[0008] In one embodiment of the present invention, the mass percentage of the base yarn and the functional auxiliary yarn is 70wt%-50wt%: 30wt%-50wt%.

[0009] In one embodiment of the present invention, before the integrated weaving, the production method further includes the following step: pre-twisting the functional auxiliary yarn.

[0010] In one embodiment of the present invention, before the integral weaving, the production method further comprises the following steps: immersing the functional auxiliary yarn in a coating solution, rolling, drying, and curing.

[0011] In one embodiment of the present invention, the pre-twisting is performed at a temperature of 24-28° C. and a relative humidity of 65% RH-68% RH.

[0012] In one embodiment of the present invention, the coating solution contains a lubricant, an anti-wear agent, a cross-linking agent, and an antistatic agent.

[0013] In one embodiment of the present invention, the particle size of the lubricant is less than or equal to 0.5 μm.

[0014] In one embodiment of the present invention, the heat treatment includes: first treating at a temperature of 120±5° C. for 40±1 s, then treating at a temperature of 165±5° C. for 25±1 s, and then treating at a temperature of 180±5° C. for 12±1 s.

[0015] In one embodiment of the present invention, during the integrated weaving process, rigid yarns are added to the connecting yarns at intervals of preset lengths.

[0016] In one embodiment of the present invention, the rigid yarn is selected from glass fiber yarn, aramid yarn, or elastic yarn with an elastic modulus greater than or equal to 50 GPa.

[0017] In one embodiment of the present invention, during the integrated weaving process, at a preset area, the shell adopts a cavity topology structure, and along the direction away from the center point of the preset area, the cavity topology structure is divided into a core area, a transition area and an edge area in sequence. The density of the connecting yarn located in the transition area is less than the density of the connecting yarn located in the core area and greater than the density of the connecting yarn located in the edge area, and / or the length of the connecting yarn located in the transition area is greater than the length of the connecting yarn located in the core area and less than the length of the connecting yarn located in the edge area.

[0018] In one embodiment of the present invention, if the functional auxiliary yarn is a heat-melting yarn, only the functional auxiliary yarn located at the edge of the shell and / or the preset stress points is heat-treated.

[0019] In one embodiment of the present invention, the density of the connecting yarns in the transition zone is 6-7 yarns / cm, and the density difference of the connecting yarns between the core zone and the transition zone is 2-3 yarns / cm.

[0020] In one embodiment of the present invention, the length of the connecting yarn in the core area is 5-35 mm.

[0021] The beneficial effects of the present invention are: In the present application, by adding heat-shrinkable yarn or hot-melt yarn to the connecting yarn, the heat-shrinkable yarn can reserve slack during weaving, and the heat-shrinkable yarn shrinks and tightens the face fabric and lining during heat treatment, thereby enhancing the structural tightness, improving the compression resistance of the filling textile, and avoiding the problem of uneven filling; the hot-melt yarn can melt and bond the face fabric and lining after heat treatment to form local reinforcement nodes, enhance the structural tightness, improve the compression resistance of the filling textile, and avoid the problem of uneven filling. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification, are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be derived from these drawings without inventive effort.

[0023] In the attached figure: Figure 1 A schematic structural diagram of the housing provided by the present invention; Figure 2 It is a structural diagram of the topological structure in the invention.

[0024] The reference numerals are as follows: 11-face fabric, 12-lining fabric, 13-connecting yarn, 14-core area, 15-transition area, 16-edge area. DETAILED DESCRIPTION

[0025] The following describes the embodiments of the present invention through specific examples. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments. The details in this specification may be modified or altered based on different viewpoints and applications without departing from the spirit of the present invention. The following embodiments and features therein may be combined with one another without conflict.

[0026] It should be noted that the illustrations provided in the following embodiments are merely schematic illustrations of the basic concept of the present invention. The drawings only show components related to the present invention and are not drawn according to the number, shape, and size of components in actual implementation. In actual implementation, the type, quantity, and proportion of each component may be changed arbitrarily, and the component layout may also be more complex.

[0027] One embodiment of the present application provides a method for producing a shell for a filling textile, the shell comprising a face fabric 11 and a lining fabric 12 connected by a plurality of connecting yarns, wherein all connecting yarns 13 are spaced apart along the thickness direction of the shell, the production method comprising the following steps: The outer fabric 11 and the lining 12 connected by the connecting yarn 13 are woven in an integrated weaving method and heat-treated to obtain a shell. The connecting yarn 13 includes a base yarn and a functional auxiliary yarn. The functional auxiliary yarn is selected from a hot-melt yarn or a heat-shrinkable yarn with a heat shrinkage rate greater than or equal to 20%, or a combination of the two.

[0028] In one embodiment of the present invention, the base yarn is selected from at least one of polyester fiber yarn, cotton fiber yarn, polyacrylonitrile fiber yarn, nylon yarn and polyester-cotton blended yarn.

[0029] In one embodiment of the present invention, the hot-melt yarn is thermoplastic polyurethane yarn.

[0030] In one embodiment of the present invention, the heat shrinkable yarn is selected from high shrinkage polyester fiber yarn, high shrinkage polyacrylonitrile fiber yarn, or a blended yarn thereof.

[0031] In this application, high shrinkage refers to a thermal shrinkage rate greater than or equal to 20%.

[0032] In one embodiment of the present invention, the mass percentage of the base yarn and the functional auxiliary yarn is 70wt%-50wt%:30wt%-50wt%, preferably 60wt%-50wt%:40wt%-50wt%.

[0033] In the present application, by controlling the mass percentage of the base yarn and the functional auxiliary yarn within a specific range (the mass percentage of the base yarn and the high shrinkage yarn is 70wt%-50wt%: 30wt%-50wt%), the base yarn can be used to provide skeleton support to avoid structural collapse caused by excessive shrinkage, and the heat-shrinkable yarn can be used to form a dense lining after heat shrinkage or the hot-melt yarn can be used to form local reinforcement nodes to enhance structural tightness and provide a three-dimensional cavity structure, thereby improving the structural stability of the textile while ensuring filling uniformity.

[0034] In one embodiment of the present invention, if the integrated weaving method is weaving, the weaving equipment used is provided with an elastic weft insertion device.

[0035] In one embodiment of the present invention, if the integrated weaving method is knitting, the knitting equipment used is provided with an active yarn feeder.

[0036] In this application, if the integrated weaving method is weaving, the weaving equipment used is provided with an elastic weft insertion device, and / or, if the integrated weaving method is knitting, the knitting equipment used is provided with an active yarn feeder, which can ensure that the tension of the yarn is at a constant level through the elastic weft insertion device or the active yarn feeder, thereby avoiding problems such as yarn breakage and uneven tension on the loom caused by large differences in physical properties (such as elastic modulus, friction coefficient, etc.) between the functional auxiliary yarn and the base yarn.

[0037] In one embodiment of the present invention, before the integrated weaving, the production method further comprises the following steps: pre-twisting the functional auxiliary yarn.

[0038] In this application, by pre-twisting the functional auxiliary yarn before integrated weaving, the friction of the functional auxiliary yarn can be reduced, avoiding problems such as yarn breakage and uneven tension on the loom caused by large differences in the friction coefficient between the functional auxiliary yarn and the base yarn.

[0039] In one embodiment of the present invention, pre-twisting includes: performing initial twisting on 2-4 functional auxiliary yarns by Z twisting at 30-35 twists / 10cm to form twisted yarns; and then performing secondary twisting on 1-3 strands of twisted yarns by S twisting at 40-50 twists / 10cm in the opposite direction.

[0040] In the present application, by setting the twist direction of the secondary twist to S twist, the tendency of weft withdrawal during weft insertion on the loom can be reduced, thereby improving weaving efficiency.

[0041] In one embodiment of the present invention, the pre-twisting is performed at a temperature of 24-28° C. and a relative humidity of 65% RH-68% RH.

[0042] In the present application, pre-twisting is performed under conditions of a temperature of 24-28°C and a relative humidity of 65%RH-68%RH, which can stabilize the moisture regain of the yarn at 4.5-5.0% and the static voltage ≤2kV, thereby avoiding increased hairiness and weaving breakage.

[0043] In one embodiment of the present invention, before the integral weaving, the production method further comprises the following steps: dipping the functional auxiliary yarn into the coating solution, rolling, drying, and curing.

[0044] In this application, before weaving in one piece, the functional auxiliary yarn is immersed in a coating solution, rolled, dried, and cured to form a coating on the surface of the functional auxiliary yarn. The coating reduces the friction of the functional auxiliary yarn and avoids problems such as yarn breakage and uneven tension on the loom caused by large differences in the friction coefficient between the functional auxiliary yarn and the base yarn.

[0045] In one embodiment of the present invention, the coating solution is a water-based emulsion with a solid content of 20-25% and a pH of 6.5-7.5.

[0046] In one embodiment of the present invention, a citric acid solution is used to adjust the pH of the water-based emulsion to 6.5-7.5.

[0047] In one embodiment of the present invention, the coating solution contains a lubricant, an anti-wear agent, a cross-linking agent, and an antistatic agent.

[0048] In one embodiment of the present invention, the immersion time is 3-5 s, preferably 3.5-4.5 s.

[0049] In one embodiment of the present invention, the rolling is performed to a liquid carrying rate of 6wt%-8wt%, preferably 7wt%-8wt%.

[0050] In one embodiment of the present invention, the drying temperature is 75-85°C, preferably 80-85°C.

[0051] In one embodiment of the present invention, the curing temperature is 105-115° C., preferably 108-115° C.; the curing time is 25-35 seconds, preferably 28-30 seconds.

[0052] In one embodiment of the present invention, the particle size of the lubricant is less than or equal to 0.5 μm.

[0053] In one embodiment of the present invention, the lubricant is silicone oil emulsion.

[0054] In one embodiment of the present invention, the anti-wear agent is polyethylene wax.

[0055] In one embodiment of the present invention, the particle size of the polyethylene wax is ≤1 μm, and the melting point of the polyethylene wax is 105-110°C.

[0056] In one embodiment of the present invention, the cross-linking agent is isocyanate.

[0057] In one embodiment of the present invention, the antistatic agent is a quaternary ammonium salt antistatic agent.

[0058] In one embodiment of the present invention, the mass ratio of the lubricant, the anti-wear agent, the cross-linking agent, and the antistatic agent is 85-90:8-10:3-4:1-2.

[0059] In one embodiment of the present invention, the heat treatment includes: first treating at a temperature of 120±5° C. for 40±1 s, then treating at a temperature of 165±5° C. for 25±1 s, and then treating at a temperature of 180±5° C. for 12±1 s.

[0060] In the present application, the material is first treated at 120±5°C for 40±1s, then at 165±5°C for 25±1s, and then at 180±5°C for 12±1s. That is, the present application adopts a gradient heating method for heat treatment, which can take into account both sufficient melting and substrate protection, thereby increasing the bonding strength by more than 80%, avoiding the problem of uneven filling, and avoiding thermal damage to the fiber.

[0061] In one embodiment of the present invention, during the integral weaving process, rigid yarns are added to the connecting yarns at predetermined intervals.

[0062] In this application, during the one-piece weaving process, rigid yarn is added to the connecting yarn at preset length intervals, and the rigid yarn can be used to form a "length limit point" in the three-dimensional space inside the cavity, ensuring that the cavity can still maintain the preset minimum length after heat treatment, avoiding problems such as uneven distribution of fillings and poor overall warmth retention caused by local collapse.

[0063] In one embodiment of the present invention, the rigid yarn is selected from glass fiber yarn, aramid yarn, or elastic yarn with an elastic modulus greater than or equal to 50 GPa.

[0064] In one embodiment of the present invention, the preset length interval is 3-10 cm.

[0065] In one embodiment of the present invention, during the integrated weaving process, the shell adopts a cavity topology structure in a preset area, and the cavity topology structure is divided into a core area 14, a transition area 15 and an edge area 16 in sequence. The density of the connecting yarn 13 located in the transition area 15 is less than the density of the connecting yarn 13 located in the core area 14 and greater than the density of the connecting yarn 13 located in the edge area 16, and / or the length of the connecting yarn 13 located in the transition area 15 is greater than the length of the connecting yarn 13 located in the core area 14 and less than the length of the connecting yarn 13 located in the edge area 16.

[0066] In the present application, during the integrated weaving process, the shell adopts a cavity topology structure in a preset area, and along the direction away from the center point of the preset area, the cavity topology structure is divided into a core area 14, a transition area 15 and an edge area 16 in sequence (that is, a multi-circular ring structure similar to concentric circles is formed). The density of the connecting yarn 13 located in the transition area 15 is less than the density of the connecting yarn 13 located in the core area 14 and greater than the density of the connecting yarn 13 located in the edge area 16, and / or the length of the connecting yarn 13 located in the transition area 15 is greater than the length of the connecting yarn 13 located in the core area 14 and less than the length of the connecting yarn 13 located in the edge area 16. The density difference and / or length difference among the core area 14, the transition area 15 and the edge area 13 can be used to form a cavity topology structure, that is, the shell of the textile adopts an uneven connecting yarn arrangement (dense center and sparse edge structure caused by density difference or expansion space difference caused by length difference), reserving space for the expansion of the filler, and avoiding problems such as possible squeezing of the filler, destruction of the three-dimensional structure of the filler, local compaction, and poor filling uniformity caused by thermal shrinkage or hot melting of the functional auxiliary yarn.

[0067] In the present application, the preset area is the key stress point of the shell. For example, if the shell is the shell of a down jacket, the preset area is the corresponding area of ​​the shoulder and back.

[0068] In one embodiment of the present invention, if the functional auxiliary yarn is a heat-melting yarn, only the functional auxiliary yarn located at the edge of the shell and / or the preset stress points is heat-treated.

[0069] In the present application, if the functional auxiliary yarn is a hot-melt yarn, only the functional auxiliary yarn located at the edge of the shell and / or the preset stress points is heat treated, that is, the hot-melt yarn at the edge and / or the preset stress points (such as quilting intersections) is selectively melted to form local bonding points instead of melting all the hot-melt yarns, thereby avoiding the restriction of the fluidity of the filling in the shell due to too many bonding points, thereby ensuring the uniformity of the filling and improving the retention rate of the filling fluffiness.

[0070] In this application, the preset force point is the quilting intersection point.

[0071] In the present application, the spacing between adjacent bonding points is greater than or equal to 5 mm.

[0072] By setting the spacing between adjacent bonding points to be greater than or equal to 5 mm, the present application can ensure the elasticity of the non-bonded area, reserve space for the expansion of the filler, and avoid problems such as possible squeezing of the filler, destruction of the three-dimensional structure of the filler, local compaction, poor filling uniformity, and decreased retention of the filler's bulkiness caused by thermal shrinkage of the functional auxiliary yarn.

[0073] In one embodiment of the present invention, the density of the connecting yarns in the core area 14 is 8-10 yarns / cm.

[0074] In one embodiment of the present invention, the density of the connecting yarns in the transition zone 15 is 6-7 yarns / cm, and the difference in density of the connecting yarns between the core zone and the transition zone is 2-3 yarns / cm.

[0075] In one embodiment of the present invention, the density of the connecting yarns in the edge region 46 is 4-5 yarns / cm.

[0076] In one embodiment of the present invention, the length of the connecting yarn in the core area 14 is 5-35 mm.

[0077] In the present application, if the textile is clothing, the length of the connecting yarn may be 5-8 mm.

[0078] In one embodiment of the present invention, if the textile is clothing, the length of the connecting yarn in the core area 14 is 5-6 mm.

[0079] In one embodiment of the present invention, if the textile is clothing, the length of the connecting yarn in the transition area 15 is 6-7 mm.

[0080] In one embodiment of the present invention, if the textile is clothing, the length of the connecting yarn at the edge region 16 is 7-8 mm.

[0081] In the present application, if the textile is a special textile (such as sports protective gear, functional household products, outdoor equipment, etc.), the length of the connecting yarn can be 8-15 mm.

[0082] In one embodiment of the present invention, if the textile is a special textile, the length of the connecting yarn in the core area 14 is 8-10 mm.

[0083] In one embodiment of the present invention, if the textile is a special textile, the length of the connecting yarn in the transition area 15 is 10-12 mm.

[0084] In one embodiment of the present invention, if the textile is a special textile, the length of the connecting yarn at the edge region 16 is 12-15 mm.

[0085] In the present application, if the textile is a household textile (such as a quilt, a pillow, etc.), the length of the connecting yarn may be 15-35 mm.

[0086] In one embodiment of the present invention, if the textile is a household textile, the length of the connecting yarn in the core area 14 is 15-20 mm.

[0087] In one embodiment of the present invention, if the textile is a household textile, the length of the connecting yarn in the transition area 15 is 20-25 mm.

[0088] In one embodiment of the present invention, if the textile is a household textile, the length of the connecting yarn at the edge region 16 is 25-35 mm.

[0089] In the following description, numerous details are discussed to provide a more thorough explanation of the embodiments of the present invention. However, it will be apparent to those skilled in the art that embodiments of the present invention may be practiced without these specific details. In other embodiments, well-known structures and devices are shown in the form of square drawings rather than in detail to avoid making the embodiments of the present invention difficult to understand.

[0090] Example 1 A method for producing a shell for a down jacket, such as Figure 1 As shown, the shell includes a face fabric 11 and a lining fabric 12 connected by a plurality of connecting yarns 13, and all the connecting yarns 13 are spaced apart along the thickness direction of the shell; The specific steps of the production method of the shell are as follows: S1. Pre-twisting heat-shrinkable polyester fiber yarns (commercially available) at a temperature of 24°C and a relative humidity of 65% RH. Specifically, four strands of heat-shrinkable polyester fiber yarns were pre-twisted (in a Z-twist direction) to form a twisted yarn with a twist strength of 30 twists / 10 cm. Three strands of the twisted yarns were then twisted in the opposite direction (in an S-twist direction) to form a final twist with a twist strength of 40 twists / 10 cm. The re-twisted heat-shrinkable polyester fiber yarn was then immersed in a water-based emulsion for 3 seconds, rolled to a liquid content of 6 wt%, dried at 75°C, and then cured at 105°C for 35 seconds. The water-based emulsion consisted of a silicone oil emulsion (particle size of 0.5 μm, solid content of 20%, the same below, commercially available), polyethylene wax (particle size of 1 μm, melting point of 105°C, solid content of 30%, the same below, commercially available), hexamethylene diisocyanate (solid content of 100%, the same below), and a quaternary ammonium salt antistatic agent SN (solid content of 99%, the same below) in a mass ratio of 85:8:4:1. The pH of the water-based emulsion was adjusted to 6.5 using a 0.01 mol / L citric acid solution. The cured heat-shrinkable polyester fiber yarn and the polyester fiber yarn are mixed in a mass percentage of 70 wt % and 30 wt % to obtain a connecting yarn; S2. A commercially available double-warp-shaft loom equipped with an elastic weft insertion device is used. Polyester fiber yarns are used as the surface warp yarns, cotton fiber yarns are used as the inner warp yarns, and polyester fiber yarns are used as the weft yarns. The surface warp yarns and the inner warp yarns are inserted separately. The face fabric 11 and the lining fabric 12 are woven in an integrated weaving method using shuttle weaving. During the integrated weaving process, a connecting yarn is woven into the fabric using a jacquard process. The face fabric 11 and the lining fabric are then connected by a connecting yarn 13 to form a three-dimensional cavity, thereby obtaining a preliminary shell. During the one-piece weaving process, the preliminary shell adopts a cavity topology structure at the corresponding area of ​​the shoulder and back of the preliminary shell, such as Figure 2 As shown, the cavity topology is divided into a core area 14 (specifically, an area enclosed by a circle with the center point of the corresponding area of ​​the shoulder and back as the center and a radius of 10 cm), a transition area 15 (specifically, an area enclosed by a circle with the center point of the corresponding area of ​​the back as the center and a radius of 3 cm and 5 cm, i.e., a circular area) and an edge area 16 (the area excluding the core area 14 and the transition area 15). In the core area 14, the density of the connecting yarn 13 is 9 yarns / cm; in the transition area 15, the density of the connecting yarn is 6 yarns / cm; in the edge area 16, the density of the connecting yarn 13 is 5 yarns / cm; in the core area 14, the length of the connecting yarn is 5 mm; in the transition area 15, the length of the connecting yarn 13 is 6 mm; in the edge area 16, the length of the connecting yarn 13 is 7 mm. Except for the corresponding areas of the shoulder and back, the density of the connecting yarns 13 in other areas of the preliminary shell is 7 yarns / cm, and the length of the connecting yarns 13 is 6 mm; During the integrated weaving process, glass fibers are added to the connecting yarn every 3 cm so that the glass fibers are woven in together with the connecting yarn, and the length of the glass fibers is the same as the length of the corresponding connecting yarn; S3. The preliminary shell is first treated at 115°C for 40 seconds, then at 160°C for 25 seconds, and then at 175°C for 12 seconds to obtain a shell.

[0091] Example 2 A method for producing a shell for a duvet, such as Figure 1 As shown, the shell includes a face fabric 11 and a lining fabric 12 connected by a plurality of connecting yarns 13, and all the connecting yarns 13 are spaced apart along the thickness direction of the shell; The specific steps of the production method of the shell are as follows: S1. Pre-twisting heat-shrinkable polyester fiber yarns (commercially available) at a temperature of 28°C and a relative humidity of 66% RH. Specifically, two strands of heat-shrinkable polyester fiber yarns were pre-twisted (in a Z-twist direction) to form a twisted yarn with a twist strength of 35 twists / 10 cm. One strand of the twisted yarn was then twisted in the opposite direction to form a secondary twist (in an S-twist direction) with a secondary twist strength of 50 twists / 10 cm. The re-twisted heat-shrinkable polyester fiber yarn was then immersed in a water-based emulsion for 5 seconds, rolled to a liquid content of 8wt%, dried at 85°C, and then cured at 115°C for 25 seconds. The water-based emulsion consisted of silicone oil emulsion, polyethylene wax, hexamethylene diisocyanate, and a quaternary ammonium antistatic agent SN in a mass ratio of 90:9:3:1.3. The pH of the water-based emulsion was adjusted to 6.8 using a 0.01 mol / L citric acid solution. The cured heat-shrinkable polyester fiber yarn and the polyester fiber yarn are mixed in a mass percentage of 50 wt%:50 wt% to obtain a connecting yarn; S2. A commercially available double-warp-shaft loom equipped with an elastic weft insertion device is used. Polyester fiber yarns are used as the surface warp yarns, cotton fiber yarns are used as the inner warp yarns, and polyester fiber yarns are used as the weft yarns. The surface warp yarns and the inner warp yarns are inserted separately. The face fabric 11 and the lining fabric 12 are woven in an integrated weaving method using shuttle weaving. During the integrated weaving process, a connecting yarn is woven into the fabric using a jacquard process. The face fabric 11 and the lining fabric are then connected by a connecting yarn 13 to form a three-dimensional cavity, thereby obtaining a preliminary shell. The density of the connecting yarns 13 in all areas of the preliminary shell is 7 yarns / cm, and the length of the connecting yarns 13 is 6 mm; During the integral weaving process, glass fibers are added to the connecting yarn every 5 cm so that the glass fibers and the connecting yarn are woven into the preliminary shell together, and the two are integrally connected to the face fabric 11 and the lining fabric 12, and the length of the glass fibers is the same as the length of the corresponding connecting yarn; S3. The preliminary shell is first treated at 120°C for 40 seconds, then at 165°C for 25 seconds, and then at 180°C for 12 seconds to obtain a shell.

[0092] Example 3 A method for producing a shell for a cushion, such as Figure 1 As shown, the shell includes a face fabric 11 and a lining fabric 12 connected by a plurality of connecting yarns 13, and all the connecting yarns 13 are spaced apart along the thickness direction of the shell; The specific steps of the production method of the shell are as follows: S1. Pre-twisting a hot-melt yarn (commercially available, specifically, thermoplastic polyurethane yarn with a melting point of 170°C) at a temperature of 26°C and a relative humidity of 68%. Specifically, three strands of the hot-melt yarn were pre-twisted (in a Z-twist direction) to form a twisted yarn with a twist strength of 32 twists / 10 cm. Two strands of the twisted yarn were then twisted in the opposite direction to form a secondary twist (in an S-twist direction) with a secondary twist strength of 45 twists / 10 cm. The re-twisted hot-melt yarn was then immersed in a water-based emulsion for 4 seconds, rolled to a liquid content of 7wt%, dried at 80°C, and then cured at 110°C for 30 seconds. The water-based emulsion consisted of silicone oil emulsion, polyethylene wax, hexamethylene diisocyanate, and a quaternary ammonium antistatic agent, SN, in a mass ratio of 86:10:3.2:1.6. The pH of the water-based emulsion was adjusted to 7.0 using a 0.01 mol / L citric acid solution. The cured hot melt yarn and the polyester fiber yarn are mixed in a mass percentage of 60wt%:40wt% to obtain a connecting yarn; S2. A double-needle-bed warp knitting machine (commercially available) is provided with an active yarn feeder, with connecting yarns as warp yarns and polyester yarns as weft yarns, and a weaving method is used to knit the face fabric 11 and the lining 12 connected by the connecting yarn 13 to form a honeycomb-shaped three-dimensional cavity to obtain a preliminary shell; The density of the connecting yarn 13 in all areas of the preliminary shell is 7 yarns / cm, and the length of the connecting yarn 13 is 6.5 mm (i.e., the length of the connecting yarn connecting the corresponding sections of the face fabric 11 and the lining fabric 12); During the integral weaving process, glass fibers are added to the connecting yarn every 5 cm so that the glass fibers and the connecting yarn are woven into the preliminary shell together, and the two are integrally connected to the face fabric 11 and the lining fabric 12, and the length of the glass fibers is the same as the length of the connecting yarn; S3. Several locations on the edge of the preliminary shell were first treated at 125°C for 40 seconds, then at 170°C for 25 seconds, and then at 190°C for 12 seconds to form several bonding points with a spacing of 5 mm between adjacent bonding points to obtain a shell.

[0093] Example 4 The difference between this embodiment and embodiment 3 is that the hot-melt yarn is not twisted but directly treated with the coating solution.

[0094] Example 5 The difference between this embodiment and embodiment 3 is that the hot-melt yarn is not impregnated with a water-based emulsion.

[0095] Comparative Example 1 The difference between this comparative example and Example 1 is that no heat-shrinkable polyester fiber yarn is added to the connecting yarn.

[0096] Comparative Example 2 The difference between this comparative example and Example 1 is that the preliminary shell is not subjected to heat treatment, but is directly used as the final shell.

[0097] Comparative Example 3 The difference between this comparative example and comparative example 1 is that the density of the connecting yarns 13 in all regions of the preliminary shell is 7 yarns / cm, and the length of the connecting yarns 13 is 6 mm, that is, the shoulder and back regions of this comparative example do not adopt a topological structure.

[0098] Comparative Example 4 The difference between this comparative example and Example 3 is that no hot-melt yarn is added to the connecting yarn.

[0099] Comparative Example 5 The difference between this comparative example and Example 3 is that the preliminary shell is not subjected to heat treatment, but is directly used as the final shell.

[0100] Comparative Example 6 The difference between this comparative example and Example 3 is that the edge of the preliminary shell is treated at a temperature of 190° C. for 77 seconds to obtain the shell, that is, this comparative example does not use a gradient temperature increase method for heat treatment.

[0101] Comparative Example 7 The difference between this comparative example and Example 3 is that all regions of the preliminary shell are heat treated.

[0102] Comparative Example 8 The difference between this comparative example and Example 3 is that glass fiber is not added to the connecting yarn during the integral weaving process.

[0103] Performance Testing The yarn breakage rates during the production process of Examples 1-5 and Comparative Examples 1-8 were statistically analyzed, and the results are shown in Table 1. The shells prepared in Examples 1-5 and Comparative Examples 1-8 were filled with white goose down (the filling amounts of Examples 4-5 were the same as those in Example 3, the filling amounts of Comparative Examples 1-3 were the same as those in Example 1, and the filling amounts of Comparative Examples 4-8 were the same as those in Example 3). After sewing the edges, the corresponding products were obtained. The cavity height deviation was tested in accordance with GB / T 14272-2021 Down Garments, and the results are shown in Table 1. The filling loft retention rate of each product was tested in accordance with GB / T 10288-2016 Test Method for Down and Feathers, and the results are shown in Table 1.

[0104] Table 1 Test results

[0105] As shown in Table 1, compared with Comparative Example 1 (no heat-shrinkable polyester yarn added to the connecting yarn), Example 1 (with heat-shrinkable polyester yarn added to the connecting yarn) showed significantly lower cavity height deviation; compared with Comparative Example 4 (no heat-melt yarn added to the connecting yarn), Example 3 (with heat-melt yarn added to the connecting yarn) showed significantly lower cavity height deviation. Furthermore, compared with Comparative Example 2 (no heat treatment of the preliminary shell), Example 1 (with heat treatment of the preliminary shell) showed significantly lower cavity height deviation; and compared with Comparative Example 5 (no heat treatment of the preliminary shell), Example 3 (with heat treatment of the preliminary shell) showed significantly lower cavity height deviation. The results show that in this application, by adding heat-shrinkable yarn or hot-melt yarn to the connecting yarn, the heat-shrinkable yarn can reserve slack during weaving, and the heat-shrinkable yarn shrinks and tightens the face fabric and lining during heat treatment, thereby enhancing the structural tightness, improving the compression resistance of the filling textile, and avoiding the problem of uneven filling; the hot-melt yarn can melt and bond the face fabric and lining after heat treatment to form local reinforcement nodes, enhance the structural tightness, improve the compression resistance of the filling textile, and avoid the problem of uneven filling.

[0106] As shown in Table 1, compared with Comparative Example 3 (which did not employ a topological structure), Example 1 (which employed a topological structure) significantly improved the filler's bulk retention. This result demonstrates that, in this application, the density and / or length differences between the core, transition, and edge regions can be utilized to form a cavity topological structure. Specifically, the textile shell utilizes a non-uniform spacing yarn arrangement (a dense center and sparse edge structure due to density differences, or differential expansion space due to length differences) to reserve space for the filler to expand, thus avoiding problems such as possible squeeze of the filler, destruction of the filler's three-dimensional structure, localized compaction, and poor filling uniformity caused by thermal shrinkage or melting of the functional auxiliary yarns.

[0107] As shown in Table 1, compared to Comparison 6 (which did not use a gradient heating method for heat treatment), Example 3 (which used a gradient heating method for heat treatment) showed significantly lower cavity height deviation. This result indicates that in this application, the initial treatment at 120±5°C for 40 seconds, followed by treatment at 165±5°C for 25 seconds, and then treatment at 180±5°C for 12 seconds, i.e., the use of a gradient heating method for heat treatment, can achieve both sufficient melting and substrate protection, increasing bond strength by over 80%, avoiding uneven filling, and preventing fiber thermal damage.

[0108] As shown in Table 1, compared with Comparative Example 7 (heat-treating all areas of the preliminary shell), Example 3 (heat-treating only the edges of the preliminary shell) significantly reduced the cavity height deviation and significantly improved the bulk retention of the filling. This result shows that in the present application, if the functional auxiliary yarn is a hot-melt yarn, only the functional auxiliary yarn located at the edges of the shell and / or at predetermined stress points is heat-treated, that is, the hot-melt yarn at the edges and / or predetermined stress points (such as quilting intersections) is selectively melted. This can form localized bonding points instead of melting all the hot-melt yarns. This avoids the restriction of the fluidity of the filling in the shell due to excessive bonding points, thereby ensuring the uniformity of the filling and improving the bulk retention of the filling.

[0109] As shown in Table 1, compared with Comparative Example 8 (no glass fiber was added to the connecting yarn during the integrated weaving process), Example 3 (glass fiber was added to the connecting yarn during the integrated weaving process) achieved significantly reduced cavity height deviation and significantly improved filler loft retention. This result demonstrates that, in this application, by adding rigid yarn to the connecting yarn at preset length intervals during the integrated weaving process, the rigid yarn can be used to form "length-limiting points" within the three-dimensional space of the cavity, ensuring that the cavity maintains the preset minimum length after heat treatment, avoiding problems such as uneven filler distribution and poor overall warmth retention caused by local collapse.

[0110] As shown in Table 1, the yarn breakage rate in Example 3 (pre-twisting the hot-melt yarn) was significantly reduced compared to Example 4 (not pre-twisting the hot-melt yarn). This result demonstrates that, in this application, pre-twisting the functional auxiliary yarn prior to integrated weaving can reduce the friction of the functional auxiliary yarn, thus avoiding problems such as yarn breakage and uneven tension on the loom caused by significant differences in the friction coefficient between the functional auxiliary yarn and the base yarn.

[0111] As shown in Table 1, the yarn breakage rate in Example 3 (where the hot-melt yarn was treated with the coating solution) was significantly reduced compared to Example 5 (where the hot-melt yarn was not treated with the coating solution). This result demonstrates that, in this application, the functional auxiliary yarn is immersed in the coating solution, then pressed, dried, and cured before integral weaving, forming a coating on the surface of the functional auxiliary yarn. This coating reduces the friction of the functional auxiliary yarn, thus avoiding problems such as yarn breakage and uneven tension on the loom caused by significant differences in the coefficient of friction between the functional auxiliary yarn and the base yarn.

[0112] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed herein are intended to be covered by the claims of the present invention.

Claims

1. A method for producing a shell of a filling textile, the shell comprising a face fabric and a lining fabric connected by a plurality of connecting yarns, all of the connecting yarns being spaced apart along the thickness direction of the shell, characterized in that: The production method comprises the following steps: The shell is obtained by weaving the face cloth and the lining cloth connected by the connecting yarn using an integrated weaving method and performing heat treatment. The connecting yarn includes a base yarn and a functional auxiliary yarn. The functional auxiliary yarn is a hot-melt yarn or a heat-shrinkage yarn with a heat shrinkage rate greater than or equal to 20%.

2. The method for producing a shell for a filling textile according to claim 1, characterized in that The mass percentage of the base yarn and the functional auxiliary yarn is 70wt%-50wt%: 30wt%-50wt%.

3. The method for producing a shell for a filling textile according to claim 1, characterized in that Before the integrated weaving, the production method further comprises the following steps: pre-twisting the functional auxiliary yarn; And / or, before the integrated weaving, the production method further comprises the following steps: dipping the functional auxiliary yarn in a coating solution, rolling, drying, and curing.

4. The method for producing a shell for a filling textile according to claim 3, characterized in that Pre-twisting is carried out at a temperature of 24-28°C and a relative humidity of 65%RH-68%RH; And / or, the coating solution contains a lubricant, an anti-wear agent, a cross-linking agent and an antistatic agent.

5. The method for producing a shell for a filling textile according to claim 4, characterized in that The particle size of the lubricant is less than or equal to 0.5 μm.

6. The method for producing a shell for a filling textile according to claim 1, characterized in that The heat treatment comprises: first treating at a temperature of 120±5°C for 40±1s, then treating at a temperature of 165±5°C for 25±1s, and then treating at a temperature of 180±5°C for 12±1s; And / or, during the integrated weaving process, rigid yarns are added to the connecting yarns at intervals of preset lengths.

7. The method for producing a shell for a filling textile according to claim 6, characterized in that The rigid yarn is selected from glass fiber yarn, aramid yarn or elastic yarn with an elastic modulus greater than or equal to 50 GPa.

8. The method for producing a shell for a filling textile according to claim 1, characterized in that During the integrated weaving process, at a preset area, the shell adopts a cavity topology structure, and along a direction away from the center point of the preset area, the cavity topology structure is sequentially divided into a core area, a transition area, and an edge area, the density of the connecting yarn in the transition area is less than the density of the connecting yarn in the core area and greater than the density of the connecting yarn in the edge area, and / or the length of the connecting yarn in the transition area is greater than the length of the connecting yarn in the core area and less than the length of the connecting yarn in the edge area; And / or, if the functional auxiliary yarn is a heat-melting yarn, only the functional auxiliary yarn located at the edge of the shell and / or the preset stress points is heat-treated.

9. The method for producing a shell for a filling textile according to claim 8, characterized in that In the transition zone, the density of the connecting yarn is 6-7 yarns / cm, and the density difference of the connecting yarn between the core zone and the transition zone is 2-3 yarns / cm.

10. The method for producing a shell for a filling textile according to claim 8, characterized in that Located in the core area, the length of the connecting yarn is 5-35 mm.

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