Warping and laminating integrated lining cloth manufacturing process and lining cloth

Abstract

The invention relates to the technical field of lining cloth manufacturing, in particular to a warping and laminating integrated lining cloth manufacturing process and lining cloth, and the warping and laminating integrated lining cloth manufacturing process comprises the following preparation steps: S1, preparing a warping substrate; s2, film spraying and coating; and S3, cooling and shaping. Wherein the hot melt adhesive film spraying liquid in the step S2 is prepared from the following raw materials in parts by weight: 50 to 70 parts of bio-based polyamide, 15 to 20 parts of polylactic acid, 10 to 15 parts of tackifier, 8 to 10 parts of EVA graft, 3 to 5 parts of nano cellulose, 3 to 5 parts of nano SiO2, 1 to 2 parts of lubricant and 0.5 to 1 part of dicumyl peroxide oil. The lining cloth manufacturing process provided by the invention is high in production efficiency, and meanwhile, the prepared lining cloth is excellent in performance and has a relatively great market prospect.

Description

Technical Field

[0001] The present application relates to the technical field of lining cloth manufacturing, and in particular to a lining cloth manufacturing process and lining cloth integrated with warping and laminating. Background Art

[0002] Interlining is a material used for the inner layer of garments, primarily providing support, shaping, reinforcement, and improved hand feel. Common interlining materials include cotton, linen, and fusible interlining. The traditional interlining manufacturing process primarily involves the following steps: grey fabric weaving, desizing, shaping, warping, and hot-melt lamination. However, existing manufacturing processes require weaving the warp and weft yarns into grey fabric first, and subsequent processing steps are also required for the grey fabric. This makes the entire production process complex, costly, and time-consuming. Therefore, a streamlined and cost-effective interlining manufacturing process is needed.

[0003] In response to the above-mentioned related technologies, this application develops a lining fabric manufacturing process and lining fabric that integrates warping and laminating. Summary of the Invention

[0004] In order to solve the above technical problems, the present application provides a lining cloth manufacturing process and lining cloth with integrated warping and laminating.

[0005] The present application provides a warping and laminating integrated interlining fabric manufacturing process, which adopts the following technical solution and includes the following preparation steps: S1 Warping base preparation: The warp yarns are arranged in order on the warping machine shaft according to the required width to form a sparse mesh lining base; S2 coating: applying the hot melt adhesive coating liquid directly to the surface of the warp yarn interlining base formed in step S1; S3 Cooling and shaping: The adhesive layer coated on the surface of the interlining base is quickly solidified by cold roller calendering to obtain an interlining finished product with two-way bonding function.

[0006] By adopting the above technical solution, the warp threads are arranged in an orderly manner to form a sparse mesh structure, eliminating the weft yarn weaving step and reducing material costs. At the same time, the mesh structure is conducive to the penetration of glue and enhances the bonding strength between layers. The hot melt adhesive coating liquid is directly applied without the need for solvents, which is green and environmentally friendly. The coating can cover the gaps between the warp threads to form a continuous adhesive layer and achieve two-way bonding. Through cold roller calendering, uneven crystallization of the adhesive layer is avoided, while the dimensional stability of the lining cloth is improved.

[0007] Preferably, the warp in step S1 is at least one of nylon, polyester, and PE.

[0008] By adopting the above technical solution, yarns with different characteristics are selected as warps. On the one hand, the lining cloth is given multiple characteristics and rich application scenarios. On the other hand, the yarn source and comprehensive economic benefits of the lining cloth are taken into account.

[0009] Preferably, the warp has a denier number of 30-200D.

[0010] By adopting the above technical solution and selecting the appropriate denier number, a denser, open-net structure can be formed, allowing the hot melt adhesive to easily penetrate the gaps between fibers, enhancing the anchoring effect between the interlining and the fabric, and improving peel strength. At the same time, the interlining's flexibility, elasticity, and support are also taken into consideration.

[0011] Preferably, the density of the warp threads is 5-150 threads / inch.

[0012] By adopting the above technical solution, different warp densities are used to form a network structure with appropriate porosity. For example, a warp density of 5-30 strands / inch forms a large-pore open network structure, allowing the hot melt adhesive to fully penetrate the fiber gaps, achieving three-dimensional anchoring, which is suitable for scenarios requiring high fit; a warp density of 30-80 strands / inch forms a semi-dense network structure, allowing the hot melt adhesive coating liquid to have a certain degree of wettability on the fibers, and the corresponding lining cloth has relatively moderate stiffness and breathability; a warp density of 80-150 strands / inch forms a high-density structure with low porosity. The coating liquid mainly covers the fiber surface to form a continuous film, which is suitable for stiff lining cloths requiring high peel strength.

[0013] Preferably, the hot melt adhesive coating solution in step S2 is made of the following raw materials in parts by weight: 50-70 parts of bio-based polyamide, 15-20 parts of polylactic acid, 10-15 parts of tackifier, 8-10 parts of EVA graft, 3-5 parts of nanocellulose, 3-5 parts of nano-SiO2, 1-2 parts of lubricant, and 0.5-1 part of dicumyl peroxide.

[0014] By adopting the above technical solutions, bio-based polyamide provides high strength and heat resistance, ensuring that the lining cloth will not debond during high-temperature pressing. It is derived from renewable resources, has a high biocarbon content, reduces dependence on petroleum-based materials, and is green and environmentally friendly. Polylactic acid can increase the hardness of the film adhesive layer and is degradable under composting conditions. The tackifier can reduce the surface tension of the adhesive and significantly improve the wettability of fibers such as polyester. It has good broad-spectrum viscosity for polar fibers such as nylon and non-polar fibers such as PE. The active groups of the EVA grafts and the amino and polylactic acid of the bio-based polyamide The carboxyl reaction of the acid reduces phase separation, lowers the viscosity of the blend system, and improves the uniformity of the coating; the synergistic effect of nanocellulose and polylactic acid can significantly enhance the toughness of the fiber and regulate the high-temperature viscosity of the coating liquid; the nano-particle filling effect of nano-SiO2 can effectively inhibit the thermal motion of the molecular chain and enhance the heat resistance of the fiber; the lubricant can improve the surface smoothness of the adhesive layer and the feel of the lining cloth, while reducing the friction coefficient of the cold roller and improving production efficiency; diisopropyl benzene peroxide plays a mild cross-linking role, improving the melt strength and preventing the coating from sagging.

[0015] Preferably, the tackifier is hydrogenated rosin glycerol ester.

[0016] By employing this technical solution, the carboxylate structure of hydrogenated rosin glycerol ester forms hydrogen bonds and van der Waals forces with the ester bonds of fibers (such as polyester), significantly improving initial adhesion. Simultaneously, the lower surface tension allows for more even adhesive spreading and reduces pinhole defects. The hydrogenated rosin glycerol ester has a reduced double bond content and significantly improved oxidation resistance, making it suitable for high-temperature lamination. During the lamination process, hydrogenated rosin glycerol ester synergizes with nanocellulose to achieve stable lamination. Furthermore, hydrogenated rosin glycerol ester can be combined with lubricants to reduce the coefficient of friction and improve demolding performance.

[0017] Preferably, the lubricant is erucamide.

[0018] By adopting the above technical solution, erucamide has a long-chain fatty acid amide molecular structure, which can form a directionally arranged lubricating layer on the surface of the hot melt adhesive, thereby reducing the friction coefficient, reducing the risk of the adhesive layer sticking to the roller, and improving production continuity; erucamide has high-temperature stability, does not decompose at the lamination temperature, and continuously exerts a lubricating effect to avoid uneven adhesive layers caused by local heat accumulation; the polar amide groups of erucamide can adsorb nano-SiO2 through hydrogen bonds to prevent its agglomeration and improve the mechanical properties of the adhesive layer.

[0019] Preferably, the hot melt adhesive coating solution includes the following preparation steps: S2-1 Premixing: Dry polylactic acid, nano-SiO2, and nanocellulose in a vacuum oven at 80°C for 4 hours (moisture ≤ 0.1%) for later use. Melt and stir bio-based polyamide, EVA grafts, and hydrogenated rosin glycerol ester at 120°C at a speed of 200 rpm for 15 minutes. Add the prepared polylactic acid, nano-SiO2, and nanocellulose, adjust the speed to 400 rpm, and continue stirring for 30 minutes. S2-2 Blending and granulation: Add the premixed material and the remaining ingredients into a twin-screw extruder and cut into pellets underwater to a particle size of 2-3 mm; S2-3 Laminating application: put the particles into the laminating machine hopper, set the laminating temperature to 150-180℃, and the laminating pressure to 0.3-0.8MPa.

[0020] By employing this technical solution, polylactic acid, nano-SiO2, and nanocellulose are vacuum-dried (moisture content ≤ 0.1%) to prevent hydrolysis during high-temperature processing. After premixing the nanoparticles with polylactic acid, the polylactic acid encapsulates the nanoparticles to form a core-shell structure, preventing agglomeration during subsequent melting. Melting is performed in separate temperature zones, with the bio-based polyamide, EVA graft, and hydrogenated rosin glycerol ester first melting at 120°C to prevent premature melting of the polylactic acid, which could lead to a sudden increase in viscosity. A stepped rotational speed gradually increases shear force to ensure uniform dispersion of the nanomaterials.

[0021] Preferably, the temperature zones of the twin-screw extruder in step S2-2 are set to 160°C / 170°C / 180°C / 175°C.

[0022] By adopting the above technical solution and following the principle of "low-temperature protection - high-temperature dispersion - cooling and stabilization," efficient and stable production of nanocomposite hot melt adhesives is achieved. The first temperature zone prevents premature melting and loss of hydrogenated rosin glycerol ester and erucamide, ensuring even lubricant distribution. The bio-based polyamide partially softens, providing a base viscosity for subsequent mixing. The second temperature zone completely melts the polylactic acid to prevent high-temperature degradation. The premixed polylactic acid-nano-SiO2 / cellulose "core-shell structure" gradually dissociates, and the nanoparticles begin to disperse. The third temperature zone triggers mild crosslinking at 180°C, improving melt strength. The fourth temperature zone, slightly lower than the third zone, prevents excessive crosslinking while maintaining fluidity for underwater pelletizing.

[0023] The present invention also provides a lining cloth, which is prepared by adopting the above-mentioned lining cloth manufacturing process integrating warping and laminating.

[0024] In summary, this application includes at least one of the following beneficial technical effects: 1. The integrated warping and laminating process eliminates the weft yarn weaving and solvent-based gluing steps in traditional interlining fabric manufacturing, reducing material waste and organic solvent emissions. The use of biodegradable materials such as bio-based polyamide and polylactic acid, combined with solvent-free hot melt adhesive laminating technology, complies with environmental protection requirements. 2. Through the synergistic effect of the open-net warp base and the nano-composite hot melt adhesive, the adhesive can penetrate into the fiber gaps to form a three-dimensional anchoring. The lining cloth has excellent peel strength and has a two-way bonding function that is suitable for a variety of fabrics. 3. The process of this application is suitable for a variety of warp materials (nylon / polyester / PE) with adjustable density, so that the lining fabric has multiple properties such as high elasticity, crispness, and water repellency, meeting the needs of multiple fields. DETAILED DESCRIPTION

[0025] The present application is further described in detail below with reference to the preparation examples and examples.

[0026] Preparation Example Table 1 Hot melt adhesive coating solution preparation examples 1-5 formula According to the formulation of Preparation Example 1, premix: polylactic acid, nano-SiO2, and nanocellulose are vacuum dried at 80°C for 4 hours (moisture ≤ 0.1%) for later use; bio-based polyamide, EVA graft, and hydrogenated rosin glycerol ester are melted and stirred at 120°C, with a speed of 200 rpm and a stirring time of 15 minutes; then the prepared polylactic acid, nano-SiO2, and nanocellulose are added, the speed is adjusted to 400 rpm, and stirring is continued for 30 minutes; blending and granulation: the premixed material and the remaining ingredients are added to a twin-screw extruder, and pelletized underwater to a particle size of 2.5 mm; coating application: the particles are put into the coating machine hopper, and the coating temperature is set to 170°C.

[0027] According to the formulation of Preparation Example 2, premix: polylactic acid, nano-SiO2, and nanocellulose are vacuum dried at 80°C for 4 hours (moisture ≤ 0.1%) for later use; bio-based polyamide, EVA graft, and hydrogenated rosin glycerol ester are melted and stirred at 120°C, with a speed of 200 rpm and a stirring time of 15 minutes; then the prepared polylactic acid, nano-SiO2, and nanocellulose are added, the speed is adjusted to 400 rpm, and stirring is continued for 30 minutes; blending and granulation: the premixed material and the remaining ingredients are added to a twin-screw extruder, and pelletized underwater to a particle size of 3 mm; coating application: the particles are put into the coating machine hopper, and the coating temperature is set to 150°C.

[0028] According to the formulation of Preparation Example 3, premix: polylactic acid, nano-SiO2, and nanocellulose are vacuum dried at 80°C for 4 hours (moisture ≤ 0.1%) for later use; bio-based polyamide, EVA graft, and hydrogenated rosin glycerol ester are melted and stirred at 120°C, with a speed of 200 rpm and a stirring time of 15 minutes; then the prepared polylactic acid, nano-SiO2, and nanocellulose are added, the speed is adjusted to 400 rpm, and stirring is continued for 30 minutes; blending and granulation: the premixed material and the remaining ingredients are added to a twin-screw extruder, and pelletized underwater to a particle size of 2 mm; coating application: the particles are put into the coating machine hopper, and the coating temperature is set to 180°C.

[0029] According to the formulation of Preparation Example 4, premix: vacuum dry the polylactic acid, nano-SiO2, and nanocellulose at 80°C for 4 hours (moisture ≤ 0.1%) for later use; melt and stir the bio-based polyamide, EVA graft, and hydrogenated rosin glycerol ester at 120°C, with a speed of 200 rpm and a stirring time of 15 minutes. Continue to add the prepared polylactic acid, nano-SiO2, and nanocellulose, adjust the speed to 400 rpm, and continue stirring for 30 minutes; blending and granulation: add the premixed material and the remaining ingredients into a twin-screw extruder, and cut the pellets underwater to a particle size of 2 mm; coating application: put the pellets into the coating machine hopper, and set the coating temperature to 150°C.

[0030] According to the formulation of Preparation Example 5, premix: polylactic acid, nano-SiO2, and nanocellulose are vacuum dried at 80°C for 4 hours (moisture ≤ 0.1%) for later use; bio-based polyamide, EVA graft, and hydrogenated rosin glycerol ester are melted and stirred at 120°C, with a speed of 200 rpm and a stirring time of 15 minutes; then the prepared polylactic acid, nano-SiO2, and nanocellulose are added, the speed is adjusted to 400 rpm, and stirring is continued for 30 minutes; blending and granulation: the premixed material and the remaining ingredients are added to a twin-screw extruder, and pelletized underwater to a particle size of 2 mm; coating application: the particles are put into the coating machine hopper, and the coating temperature is set to 180°C.

[0031] Example Table 2 Parameters of Examples 1-24 Example 1 The present embodiment provides a warping and laminating integrated lining fabric manufacturing process, comprising the following preparation steps: S1 Warping base preparation: Arrange nylon warp yarns on the warping machine according to the required width, with a warp denier of 30D and a warp density of 5 yarns / inch to form a sparse mesh lining base; S2 Laminating: The hot melt adhesive laminating solution prepared according to the method of Preparation Example 1 is directly coated on the surface of the warp yarn interlining base formed in step S1. The laminating temperature is 150°C and the laminating pressure is 0.3 MPa. S3 Cooling and shaping: The adhesive layer is quickly solidified by cold roller calendering to obtain a finished lining cloth with two-way bonding function.

[0032] Example 2 The present embodiment provides a warping and laminating integrated lining fabric manufacturing process, comprising the following preparation steps: S1 Warping base preparation: Arrange nylon warp yarns on the warping machine according to the required width, with a warp denier of 30D and a warp density of 80 yarns / inch to form a sparse mesh lining base; S2 Laminating: The hot melt adhesive laminating solution prepared according to the method of Preparation Example 1 is directly coated on the surface of the warp yarn interlining base formed in step S1. The laminating temperature is 160°C and the laminating pressure is 0.4 MPa. S3 Cooling and shaping: The adhesive layer is quickly solidified by cold roller calendering to obtain a finished lining cloth with two-way bonding function.

[0033] Example 3 The present embodiment provides a warping and laminating integrated lining fabric manufacturing process, comprising the following preparation steps: S1 Warping base preparation: Arrange nylon warp yarns on the warping machine according to the required width, with a warp denier of 30D and a warp density of 150 yarns / inch to form a sparse mesh lining base; S2 Laminating: The hot melt adhesive laminating solution prepared according to the method of Preparation Example 1 is directly coated on the surface of the warp yarn interlining base formed in step S1. The laminating temperature is 180°C and the laminating pressure is 0.7 MPa. S3 Cooling and shaping: The adhesive layer is quickly solidified by cold roller calendering to obtain a finished lining cloth with two-way bonding function.

[0034] Example 4 The present embodiment provides a warping and laminating integrated lining fabric manufacturing process, comprising the following preparation steps: S1 Warping base preparation: Arrange nylon warp yarns on the warping machine according to the required width, with a warp denier of 100D and a warp density of 5 yarns / inch to form a sparse mesh lining base; S2 Laminating: The hot melt adhesive laminating solution prepared according to the method of Preparation Example 2 is directly coated on the surface of the warp yarn interlining base formed in step S1. The laminating temperature is 160°C and the laminating pressure is 0.4 MPa. S3 Cooling and shaping: The adhesive layer is quickly solidified by cold roller calendering to obtain a finished lining cloth with two-way bonding function.

[0035] Example 5 The present embodiment provides a warping and laminating integrated lining fabric manufacturing process, comprising the following preparation steps: S1 Warping base preparation: Arrange nylon warp yarns on the warping machine according to the required width, with a warp denier of 100D and a warp density of 80 yarns / inch to form a sparse mesh lining base; S2 Laminating: The hot melt adhesive laminating solution prepared according to the method of Preparation Example 2 is directly coated on the surface of the warp yarn interlining base formed in step S1. The laminating temperature is 170°C and the laminating pressure is 0.5 MPa. S3 Cooling and shaping: The adhesive layer is quickly solidified by cold roller calendering to obtain a finished lining cloth with two-way bonding function.

[0036] Example 6 The present embodiment provides a warping and laminating integrated lining fabric manufacturing process, comprising the following preparation steps: S1 Warping base preparation: Arrange nylon warp yarns on the warping machine according to the required width, with a warp denier of 100D and a warp density of 150 yarns / inch to form a sparse mesh lining base; S2 Laminating: The hot melt adhesive laminating solution prepared according to the method of Preparation Example 2 is directly coated on the surface of the warp yarn interlining base formed in step S1. The laminating temperature is 180°C and the laminating pressure is 0.8 MPa. S3 Cooling and shaping: The adhesive layer is quickly solidified by cold roller calendering to obtain a finished lining cloth with two-way bonding function.

[0037] Example 7 The present embodiment provides a warping and laminating integrated lining fabric manufacturing process, comprising the following preparation steps: S1 Warping base preparation: Arrange nylon warp yarns on the warping machine according to the required width, with a warp denier of 200D and a warp density of 5 yarns / inch to form a sparse mesh lining base; S2 Laminating: The hot melt adhesive laminating solution prepared according to the method of Preparation Example 3 is directly coated on the surface of the warp yarn interlining base formed in step S1. The laminating temperature is 170°C and the laminating pressure is 0.5 MPa. S3 Cooling and shaping: The adhesive layer is quickly solidified by cold roller calendering to obtain a finished lining cloth with two-way bonding function.

[0038] Example 8 The present embodiment provides a warping and laminating integrated lining fabric manufacturing process, comprising the following preparation steps: S1 Warping base preparation: Arrange nylon warp yarns on the warping machine according to the required width, with a warp denier of 200D and a warp density of 80 yarns / inch to form a sparse mesh lining base; S2 Laminating: The hot melt adhesive laminating solution prepared according to the method of Preparation Example 3 is directly coated on the surface of the warp yarn interlining base formed in step S1. The laminating temperature is 180°C and the laminating pressure is 0.6 MPa. S3 Cooling and shaping: The adhesive layer is quickly solidified by cold roller calendering to obtain a finished lining cloth with two-way bonding function.

[0039] Example 9 The present embodiment provides a warping and laminating integrated lining fabric manufacturing process, comprising the following preparation steps: S1 Warping base preparation: Arrange the polyester warp yarns on the warping machine according to the required width, with a warp denier of 30D and a warp density of 5 yarns / inch to form a sparse mesh lining base; S2 Laminating: The hot melt adhesive laminating solution prepared according to the method of Preparation Example 1 is directly coated on the surface of the warp yarn interlining base formed in step S1. The laminating temperature is 150°C and the laminating pressure is 0.3 MPa. S3 Cooling and shaping: The adhesive layer is quickly solidified by cold roller calendering to obtain a finished lining cloth with two-way bonding function.

[0040] Example 10 The present embodiment provides a warping and laminating integrated lining fabric manufacturing process, comprising the following preparation steps: S1 Warping base preparation: Arrange polyester warp yarns on the warping machine according to the required width, with a warp denier of 30D and a warp density of 80 yarns / inch to form a sparse mesh lining base; S2 Laminating: The hot melt adhesive laminating solution prepared according to the method of Preparation Example 1 is directly coated on the surface of the warp yarn interlining base formed in step S1. The laminating temperature is 160°C and the laminating pressure is 0.4 MPa. S3 Cooling and shaping: The adhesive layer is quickly solidified by cold roller calendering to obtain a finished lining cloth with two-way bonding function.

[0041] Example 11 The present embodiment provides a process for manufacturing an interlining fabric with integrated warping and laminating, including the following steps: S1 Warping base preparation: Arrange polyester warp yarns on the warping machine according to the required width, with a warp denier of 30D and a warp density of 150 yarns / inch to form a sparse mesh lining base; S2 Laminating: The hot melt adhesive laminating solution prepared according to the method of Preparation Example 1 is directly coated on the surface of the warp yarn interlining base formed in step S1. The laminating temperature is 180°C and the laminating pressure is 0.7 MPa. S3 Cooling and shaping: The adhesive layer is quickly solidified by cold roller calendering to obtain a finished lining cloth with two-way bonding function.

[0042] Example 12 The present embodiment provides a warping and laminating integrated lining fabric manufacturing process, comprising the following preparation steps: S1 Warping base preparation: Arrange polyester warp yarns on the warping machine according to the required width, with a warp denier of 100D and a warp density of 5 yarns / inch to form a sparse mesh lining base; S2 Laminating: The hot melt adhesive laminating solution prepared according to the method of Preparation Example 2 is directly coated on the surface of the warp yarn interlining base formed in step S1. The laminating temperature is 160°C and the laminating pressure is 0.4 MPa. S3 Cooling and shaping: The adhesive layer is quickly solidified by cold roller calendering to obtain a finished lining cloth with two-way bonding function.

[0043] Example 13 The present embodiment provides a process for manufacturing an interlining fabric with integrated warping and laminating, including the following steps: S1 Warping base preparation: Arrange polyester warp yarns on the warping machine according to the required width, with a warp denier of 100D and a warp density of 80 yarns / inch to form a sparse mesh lining base; S2 Laminating: The hot melt adhesive laminating solution prepared according to the method of Preparation Example 2 is directly coated on the surface of the warp yarn interlining base formed in step S1. The laminating temperature is 170°C and the laminating pressure is 0.5 MPa. S3 Cooling and shaping: The adhesive layer is quickly solidified by cold roller calendering to obtain a finished lining cloth with two-way bonding function.

[0044] Example 14 The present embodiment provides a warping and laminating integrated lining fabric manufacturing process, comprising the following preparation steps: S1 Warping base preparation: Arrange polyester warp yarns on the warping machine according to the required width, with a warp denier of 100D and a warp density of 150 yarns / inch to form a sparse mesh lining base; S2 Laminating: The hot melt adhesive laminating solution prepared according to the method of Preparation Example 2 is directly coated on the surface of the warp yarn interlining base formed in step S1. The laminating temperature is 180°C and the laminating pressure is 0.8 MPa. S3 Cooling and shaping: The adhesive layer is quickly solidified by cold roller calendering to obtain a finished lining cloth with two-way bonding function.

[0045] Example 15 The present embodiment provides a warping and laminating integrated lining fabric manufacturing process, comprising the following preparation steps: S1 Warping base preparation: Arrange polyester warp yarns on the warping machine according to the required width, with a warp denier of 200D and a warp density of 5 yarns / inch to form a sparse mesh lining base; S2 Laminating: The hot melt adhesive laminating solution prepared according to the method of Preparation Example 3 is directly coated on the surface of the warp yarn interlining base formed in step S1. The laminating temperature is 170°C and the laminating pressure is 0.5 MPa. S3 Cooling and shaping: The adhesive layer is quickly solidified by cold roller calendering to obtain a finished lining cloth with two-way bonding function.

[0046] Example 16 The present embodiment provides a warping and laminating integrated lining fabric manufacturing process, comprising the following preparation steps: S1 Warping base preparation: Arrange polyester warp yarns on the warping machine according to the required width, with a warp denier of 200D and a warp density of 80 yarns / inch to form a sparse mesh lining base; S2 Laminating: The hot melt adhesive laminating solution prepared according to the method of Preparation Example 3 is directly coated on the surface of the warp yarn interlining base formed in step S1. The laminating temperature is 180°C and the laminating pressure is 0.6 MPa. S3 Cooling and shaping: The adhesive layer is quickly solidified by cold roller calendering to obtain a finished lining cloth with two-way bonding function.

[0047] Example 17 The present embodiment provides a warping and laminating integrated lining fabric manufacturing process, comprising the following preparation steps: S1 Warping base preparation: Arrange the PE warp yarns on the warping machine according to the required width, with a warp denier of 30D and a warp density of 5 yarns / inch to form a sparse mesh lining base; S2 Laminating: The hot melt adhesive laminating solution prepared according to the method of Preparation Example 1 is directly coated on the surface of the warp yarn interlining base formed in step S1. The laminating temperature is 150°C and the laminating pressure is 0.3 MPa. S3 Cooling and shaping: The adhesive layer is quickly solidified by cold roller calendering to obtain a finished lining cloth with two-way bonding function.

[0048] Example 18 The present embodiment provides a warping and laminating integrated lining fabric manufacturing process, comprising the following preparation steps: S1 Warping base preparation: Arrange the PE warp yarns on the warping machine according to the required width, with a warp denier of 30D and a warp density of 80 yarns / inch to form a sparse mesh lining base; S2 Laminating: The hot melt adhesive laminating solution prepared according to the method of Preparation Example 1 is directly coated on the surface of the warp yarn interlining base formed in step S1. The laminating temperature is 160°C and the laminating pressure is 0.4 MPa. S3 Cooling and shaping: The adhesive layer is quickly solidified by cold roller calendering to obtain a finished lining cloth with two-way bonding function.

[0049] Example 19 The present embodiment provides a warping and laminating integrated lining fabric manufacturing process, comprising the following preparation steps: S1 Warping base preparation: Arrange the PE warp yarns on the warping machine according to the required width, with a warp denier of 30D and a warp density of 150 yarns / inch to form a sparse mesh lining base; S2 Laminating: The hot melt adhesive laminating solution prepared according to the method of Preparation Example 1 is directly coated on the surface of the warp yarn interlining base formed in step S1. The laminating temperature is 180°C and the laminating pressure is 0.7 MPa. S3 Cooling and shaping: The adhesive layer is quickly solidified by cold roller calendering to obtain a finished lining cloth with two-way bonding function.

[0050] Example 20 The present embodiment provides a warping and laminating integrated lining fabric manufacturing process, comprising the following preparation steps: S1 Warping base preparation: Arrange the PE warp yarns on the warping machine according to the required width, with a warp denier of 100D and a warp density of 5 yarns / inch to form a sparse mesh lining base; S2 Laminating: The hot melt adhesive laminating solution prepared according to the method of Preparation Example 2 is directly coated on the surface of the warp yarn interlining base formed in step S1. The laminating temperature is 160°C and the laminating pressure is 0.4 MPa. S3 Cooling and shaping: The adhesive layer is quickly solidified by cold roller calendering to obtain a finished lining cloth with two-way bonding function.

[0051] Example 21 The present embodiment provides a warping and laminating integrated lining fabric manufacturing process, comprising the following preparation steps: S1 Warping base preparation: Arrange the PE warp yarns on the warping machine according to the required width, with a warp denier of 100D and a warp density of 80 yarns / inch to form a sparse mesh lining base; S2 Laminating: The hot melt adhesive laminating solution prepared according to the method of Preparation Example 2 is directly coated on the surface of the warp yarn interlining base formed in step S1. The laminating temperature is 170°C and the laminating pressure is 0.5 MPa. S3 Cooling and shaping: The adhesive layer is quickly solidified by cold roller calendering to obtain a finished lining cloth with two-way bonding function.

[0052] Example 22 The present embodiment provides a warping and laminating integrated lining fabric manufacturing process, comprising the following preparation steps: S1 Warping base preparation: Arrange the PE warp yarns on the warping machine according to the required width, with a warp denier of 100D and a warp density of 150 yarns / inch to form a sparse mesh lining base; S2 Laminating: The hot melt adhesive laminating solution prepared according to the method of Preparation Example 2 is directly coated on the surface of the warp yarn interlining base formed in step S1. The laminating temperature is 180°C and the laminating pressure is 0.8 MPa. S3 Cooling and shaping: The adhesive layer is quickly solidified by cold roller calendering to obtain a finished lining cloth with two-way bonding function.

[0053] Example 23 The present embodiment provides a warping and laminating integrated lining fabric manufacturing process, comprising the following preparation steps: S1 Warping base preparation: Arrange the PE warp yarns on the warping machine according to the required width. The warp yarn denier is 200D and the warp yarn density is 5 yarns / inch to form a sparse mesh lining base. S2 Laminating: The hot melt adhesive laminating solution prepared according to the method of Preparation Example 3 is directly coated on the surface of the warp yarn interlining base formed in step S1. The laminating temperature is 170°C and the laminating pressure is 0.5 MPa. S3 Cooling and shaping: The adhesive layer is quickly solidified by cold roller calendering to obtain a finished lining cloth with two-way bonding function.

[0054] Example 24 The present embodiment provides a warping and laminating integrated lining fabric manufacturing process, comprising the following preparation steps: S1 Warping base preparation: Arrange the PE warp yarns on the warping machine according to the required width, with a warp denier of 200D and a warp density of 80 yarns / inch to form a sparse mesh lining base; S2 Laminating: The hot melt adhesive laminating solution prepared according to the method of Preparation Example 3 is directly coated on the surface of the warp yarn interlining base formed in step S1. The laminating temperature is 180°C and the laminating pressure is 0.6 MPa. S3 Cooling and shaping: The adhesive layer is quickly solidified by cold roller calendering to obtain a finished lining cloth with two-way bonding function.

[0055] Comparative Example Comparative Example 1 A warping and laminating integrated lining fabric manufacturing process is different from Example 1 in that the warp density is 3 threads / inch.

[0056] Comparative Example 2 A warping and laminating integrated lining fabric manufacturing process is different from Example 3 in that: the warp density is 160 threads / inch and the laminating pressure is 0.8 MPa.

[0057] Comparative Example 3 A warping and laminating integrated lining fabric manufacturing process is different from Example 6 in that the warp denier number is 200D.

[0058] Comparative Example 4 A warping and laminating integrated lining fabric manufacturing process is different from Example 3 in that the laminating liquid used is prepared according to the method of Preparation Example 4.

[0059] Comparative Example 5 A warping and laminating integrated lining fabric manufacturing process is different from Example 3 in that the laminating liquid used is prepared according to the method of Preparation Example 5.

[0060] Comparative Example 6 A warping and laminating integrated lining fabric manufacturing process is different from Example 9 in that the warp density is 3 threads / inch.

[0061] Comparative Example 7 A warping and laminating integrated lining fabric manufacturing process, which differs from Example 11 in that the warp density is 160 threads / inch and the laminating pressure is 0.8 MPa.

[0062] Comparative Example 8 A warping and laminating integrated lining fabric manufacturing process, which differs from Example 14 in that the warp denier number is 200D.

[0063] Comparative Example 9 A warping and laminating integrated lining fabric manufacturing process is different from Example 11 in that the laminating liquid used is prepared according to the method of Preparation Example 4.

[0064] Comparative Example 10 A warping and laminating integrated lining fabric manufacturing process is different from Example 11 in that the laminating liquid used is prepared according to the method of Preparation Example 5.

[0065] Comparative Example 11 A warping and laminating integrated lining fabric manufacturing process, which differs from Example 17 in that the warp density is 3 threads / inch.

[0066] Comparative Example 12 A warping and laminating integrated lining fabric manufacturing process, which differs from Example 19 in that the warp density is 160 threads / inch and the laminating pressure is 0.8 MPa.

[0067] Comparative Example 13 A warping and laminating integrated lining fabric manufacturing process, which differs from Example 22 in that the warp denier number is 200D.

[0068] Comparative Example 14 A warping and laminating integrated lining fabric manufacturing process is different from Example 19 in that the laminating liquid used is prepared according to the method of Preparation Example 4.

[0069] Comparative Example 15 A warping and laminating integrated lining fabric manufacturing process is different from Example 19 in that the laminating liquid used is prepared according to the method of Preparation Example 5.

[0070] Performance testing The interlinings prepared in Examples 1-24 and Comparative Examples 1-15 were tested for relevant properties, and the results are listed in Table 3. The relevant testing standards are as follows: Product weight reference standard: GB / T 4669-2008 "Textiles - Determination of mass per unit length and mass per unit area"; Peel strength reference standard: GB / T 2791-1995 "Test method for T-peel strength of adhesives"; Adhesion is based on the industry's common visual rating: Level 5 means no debonding and the bonding surface is completely uniform; Level 1 means ≥50% debonding; Thermal shrinkage reference standard: GB / T 8628-2013 "Textiles - Preparation, marking and measurement of fabric specimens and garments in tests for determining dimensional change"; Elasticity reference standard: GB / T 24218.3-2010 "Textiles - Test methods for nonwovens - Part 3: Determination of breaking strength and elongation at break".

[0071] Table 3 Performance test results Combined with the analysis of the test results of the relevant embodiments and comparative examples in the above table, it can be seen from the comparison between Comparative Examples 1 and 2 and Examples 1 and 3 that the ultra-low warp density (3 strands / inch) leads to extremely low peel strength (30N), insufficient gram weight (40g / m²), only acceptable elasticity (82%), and poor practicality; the ultra-high warp density (160 strands / inch) leads to extremely poor adhesion (grade 2), unstable heat shrinkage (2.6%) and elasticity (75%), thereby verifying the preferred range of the warp density of Examples 1-8 of the present application.

[0072] From the comparison between Comparative Example 3 and Example 6, it can be concluded that the high denier number and high warp density lead to a significant decrease in peel strength (65N) and adhesion (grade 3) at high grammage (150g / m²), and a significant decrease in heat shrinkage (2.8%) and elasticity (60%).

[0073] From the comparison of Comparative Examples 4 and 5 with Example 3, it can be seen that, when other parameters are the same, the product made from the laminating solution prepared by the method of Preparation Example 1 selected in Example 3 is superior in peel strength, adhesion and heat shrinkage.

[0074] From the comparison of Comparative Examples 6 and 7 with Examples 9 and 11, it can be seen that the ultra-low warp density (3 strands / inch) leads to extremely low peel strength (30N), insufficient gram weight (45g / m²), and only acceptable elasticity (80%), and poor practicality; the ultra-high warp density (160 strands / inch) leads to extremely poor adhesion (grade 2). Although the peel strength (84N) is high, the heat shrinkage (2.8%) and elasticity (73%) are unstable, which verifies the preferred range of the warp density of Examples 9-16 of the present application.

[0075] From the comparison between Comparative Example 8 and Example 14, it can be seen that the high denier number and high warp density lead to a significant decrease in peel strength (66N) and adhesion (grade 3) at a high grammage (160g / m²), and the heat shrinkage (3.0%) and elasticity (60%) are also significantly reduced.

[0076] Comparing Comparative Examples 9 and 10 with Example 11, when other parameters are the same, the product made from the laminating solution prepared by the method of Preparation Example 1 selected in Example 11 is superior in peel strength, adhesion and heat shrinkage.

[0077] From the comparison of Comparative Examples 11 and 12 and Examples 17 and 19, it can be seen that the ultra-low warp density (3 strands / inch) results in extremely low peel strength (25N) and poor heat shrinkage (4.0%), while the ultra-high warp density (160 strands / inch) results in extremely poor adhesion (grade 1) and poor heat shrinkage (4.1%).

[0078] From the comparison between Comparative Example 13 and Example 22, it can be seen that the high Denier number and high warp density lead to a significant decrease in peel strength (50N) and adhesion (grade 2) at high grammage (140g / m²), and the heat shrinkage (4.3%) and elasticity (50%) are also significantly reduced.

[0079] Comparing Comparative Examples 14 and 15 with Example 19, when other parameters are the same, the product made from the laminating solution prepared by the method of Preparation Example 1 selected in Example 19 is superior in peel strength, adhesion and heat shrinkage.

[0080] In summary, it can be concluded that the peel strength of the embodiments of the present invention is generally ≥45 N, and the adhesion rating is concentrated in level 4 (such as Examples 2-16). Although the comparative examples have individual high values ​​(such as comparative example 10 with a peel strength of 80 N / level 5), the overall fluctuation is large (comparative example 12 with a peel strength of 55 N / level 1). Typical comparisons are: Example 3 (peel strength 80 N / level 5) and Comparative Example 2 (peel strength 80 N / level 2). Under the same peel strength, the bonding uniformity of the embodiments is significantly better; the heat shrinkage rates of the embodiments are all ≤3.2%, which meets the requirements of high-end lining cloths (usually ≤5%); more than 30% of the samples in the comparative examples have a heat shrinkage rate ≥3% (such as comparative examples 11-13 are all >4%), and the elasticity and gram weight of the embodiments are more synergistic (such as gram weight 140g / m 2 The elasticity of Example 14 is still maintained at 65%), while the comparative examples have low weight and low elasticity abnormalities (such as the comparative example 11 with a weight of 35 g / m 2 The performance parameters of the examples are concentrated (e.g., 90% of the samples have a peel strength of 45-96 N and a heat shrinkage of 1.5-3.2%), while the comparative data are discrete (e.g., comparative example 7 has a peel strength of 84 N but only grade 2 adhesion, and comparative example 15 has a peel strength of 70 N but a sharp drop in elasticity to 65%).

[0081] Further comprehensive analysis shows that the embodiment of the present invention achieves an excellent balance of peel strength, thermal stability and elasticity through the bio-based adhesive layer formula (such as polylactic acid + nanocellulose / SiO2) and gradient temperature zone process; the performance parameters of the comparative example are uncontrollable and cannot meet actual needs; the embodiment has a good balance of peel strength, thermal stability and elasticity in the high gram weight range (>100 g / m 2 ) is particularly outstanding (for example, Example 16 weighs 120 g / m 2 The peeling strength is 96 N), which shows that the embodiment of the present invention is more excellent.

[0082] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A warping and laminating integrated lining fabric manufacturing process, characterized in that: The method comprises the following preparation steps: S1 Warping base preparation: Arrange the warp yarns on the warping machine shaft according to the required width to form a sparse mesh lining base; S2 coating: applying the hot melt adhesive coating liquid directly to the surface of the warp yarn interlining base formed in step S1; S3 Cooling and shaping: The adhesive layer coated on the surface of the interlining base is quickly solidified by cold roller calendering to obtain an interlining finished product with two-way bonding function.

2. The interlining fabric manufacturing process with integrated warping and laminating according to claim 1, characterized in that: In step S1, the warp yarn is at least one of nylon, polyester, and PE.

3. The warping and laminating integrated lining fabric manufacturing process according to claim 2, characterized in that: The warp yarn has a denier number of 30-200D.

4. The warping and laminating integrated lining fabric manufacturing process according to claim 3, characterized in that: The density of the warp yarns is 5-150 yarns / inch.

5. The warping and laminating integrated lining fabric manufacturing process according to claim 1, characterized in that: The hot melt adhesive coating solution in step S2 is made of the following raw materials in parts by weight: 50-70 parts of bio-based polyamide, 15-20 parts of polylactic acid, 10-15 parts of tackifier, 8-10 parts of EVA graft, 3-5 parts of nanocellulose, 3-5 parts of nano-SiO2, 1-2 parts of lubricant, and 0.5-1 part of dicumyl peroxide.

6. The interlining fabric manufacturing process with integrated warping and laminating according to claim 5, characterized in that: The tackifier is hydrogenated rosin glycerol ester.

7. The interlining fabric manufacturing process with integrated warping and laminating according to claim 5, characterized in that: The lubricant is erucamide.

8. The warping and laminating integrated lining fabric manufacturing process according to claim 5, characterized in that: The hot melt adhesive coating solution is prepared by the following steps: S2-1 Premixing: Dry polylactic acid, nano-SiO2, and nanocellulose in a vacuum oven at 80°C for 4 hours (moisture ≤ 0.1%) for later use. Melt and stir bio-based polyamide, EVA grafts, and hydrogenated rosin glycerol ester at 120°C at a speed of 200 rpm for 15 minutes. Add the prepared polylactic acid, nano-SiO2, and nanocellulose, adjust the speed to 400 rpm, and continue stirring for 30 minutes. S2-2 Blending and granulation: Add the premixed material and the remaining ingredients into a twin-screw extruder and cut into pellets underwater to a particle size of 2-3 mm; S2-3 Laminating application: put the particles into the laminating machine hopper, set the laminating temperature to 150-180℃, and the laminating pressure to 0.3-0.8MPa.

9. The interlining fabric manufacturing process with integrated warping and laminating according to claim 8, characterized in that: The temperature zones of the twin-screw extruder in step S2-2 are set to 160°C / 170°C / 180°C / 175°C.

10. A lining cloth, characterized in that: The lining cloth is prepared by the warping and laminating integrated manufacturing process described in any one of claims 1 to 9.

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