Base cloth for leather and leatherware leather

Abstract

The utility model discloses base cloth for leather and leatherware leather. The base cloth for the leather is used in superfine fiber synthetic leather. The base cloth for the leather comprises a surface layer, an elastic layer and a bottom layer which are tightly compounded along the thickness direction of the base cloth, the elastic layer is formed by weaving spandex filaments and PHBV / PLA fibers. The PHBV / PLA fiber selected by the utility model not only conforms to the concept of low-carbon environment-friendly sustainable development, but also has extremely high antibacterial property and mite-repelling property, the antibacterial property of the PHBV / PLA fiber is an implicit property of the material, and antibacterial and mildew-proof properties are provided for the superfine fiber synthetic leather. And on the other hand, the PHBV / PLA fibers and the spandex filaments are woven, so that the base cloth is endowed with good elasticity, and the finally prepared superfine fiber synthetic leather has better elastic recovery performance and is not easy to deform when being stressed. Furthermore, a composite layer structure of the surface layer, the elastic layer and the bottom layer is adopted, and the elastic layer with high elasticity is arranged in the middle, so that the overall strength, the mechanical property and the like of the base cloth for the leather are obviously improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ultra-fiber leather, in particular to a base cloth for leather and leather goods. Background Art

[0002] Superfine fiber synthetic leather, referred to as superfine leather, is the third generation of artificial leather made of non-woven fabric made of superfine fiber as raw material, impregnated with polyurethane slurry, and then processed through a series of complex processes. In recent years, with the influence of resource and environmental factors, the development of genuine leather has been restricted. Superfine fiber synthetic leather is the best substitute for natural leather.

[0003] The Chinese utility model patent with announcement number CN220314402U discloses a superfine fiber synthetic leather and a base fabric thereof. The base fabric is used in the superfine fiber synthetic leather. The base fabric comprises a surface layer and a bottom layer which are tightly compounded along the thickness direction of the base fabric. The surface layer is a non-woven fabric formed by interweaving PA6 superfine fibers and polyester superfine fibers by needle punching.

[0004] In the production process of ultrafine fiber synthetic leather, various indicators of the base fabric have a great impact on the technical quality of artificial leather. Although the existing base fabric effectively solves the problem of improving the moisture permeability and air permeability of traditional ultrafine fiber synthetic leather, the applicant found in the process of continuous innovation and optimization of the product that the base fabric of the ultrafine fiber synthetic leather adopts non-woven fabric, the overall strength of the base fabric needs to be improved, and the manufactured leather products have the problem of easy deformation after being subjected to force. Utility Model Content

[0005] In order to overcome the above technical defects, the utility model provides a base cloth for leather and leather goods.

[0006] In order to solve the above problems, the utility model is implemented according to the following technical solutions:

[0007] In the first aspect, the utility model provides a leather base fabric, wherein the leather base fabric is used in ultrafine fiber synthetic leather;

[0008] The leather base fabric comprises a surface layer, an elastic layer and a bottom layer which are tightly compounded along the thickness direction of the base fabric;

[0009] The elastic layer is woven from spandex yarn and PHBV / PLA fiber.

[0010] Preferably, the elastic layer adopts a mesh tissue structure.

[0011] Preferably, the spandex yarn is 30D spandex yarn with a linear density of 3.33tex.

[0012] Preferably, the bottom layer is knitted from pure spinning of polypropylene staple fibers, spandex yarns and special-section polyester.

[0013] Preferably, the bottom layer is a double-sided mesh structure.

[0014] Preferably, the surface layer is a non-woven fabric formed by interweaving PA6 ultrafine fibers, polyester ultrafine fibers and PET fibers by needle punching, and the PET fibers are provided with a PE coating layer.

[0015] In a second aspect, the utility model further provides a leather product leather, wherein the leather product leather is a superfine fiber synthetic leather, and the leather product leather is made of the leather base cloth described in the first aspect.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The utility model also provides a leather base fabric, which is used in ultrafine fiber synthetic leather; the leather base fabric comprises a surface layer, an elastic layer and a bottom layer which are tightly compounded along the thickness direction of the base fabric; the elastic layer is woven from spandex yarn and PHBV / PLA fiber.

[0018] The PHBV / PLA fiber selected by the utility model not only conforms to the concept of low-carbon environmental protection and sustainable development, but also has extremely high antibacterial and anti-mite properties. Its antibacterial property is an implicit property of the material itself, providing antibacterial and mildew-proof properties for the ultrafine fiber synthetic leather. On the other hand, the weaving of PHBV / PLA fiber and spandex yarn gives the base fabric good elasticity, and the ultrafine fiber synthetic leather finally obtained has better elastic recovery performance and is not easily deformed under stress. Furthermore, a composite layer structure of a surface layer, an elastic layer and a bottom layer is adopted, with an elastic elastic layer in the middle, so that the overall strength and mechanical properties of the leather base fabric are significantly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings, wherein:

[0020] Figure 1 This is a schematic diagram of the layer structure of a leather base fabric of the utility model;

[0021] Figure 2 It is a schematic diagram of the double-sided mesh organizational structure of the bottom layer of the utility model.

[0022] In the figure:

[0023] 10-Surface layer;

[0024] 20-elastic layer;

[0025] 30- Bottom floor. DETAILED DESCRIPTION

[0026] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0027] like Figure 1-2 As shown, the preferred structure of a leather base cloth described in the utility model.

[0028] like Figure 1 As shown, the leather base fabric of the present technology is used in ultrafine fiber synthetic leather and is used for the production of ultrafine fiber synthetic leather. The leather base fabric comprises a surface layer 10, an elastic layer 20 and a bottom layer 30 which are tightly compounded along the thickness direction of the base fabric; the elastic layer is woven from spandex yarn and PHBV / PLA fiber.

[0029] The PHBV / PLA fiber selected by the utility model not only conforms to the concept of low-carbon environmental protection and sustainable development, but also has extremely high antibacterial and anti-mite properties. Its antibacterial property is an implicit property of the material itself, providing antibacterial and mildew-proof properties for the ultrafine fiber synthetic leather. On the other hand, the weaving of PHBV / PLA fiber and spandex yarn gives the base fabric good elasticity, and the ultrafine fiber synthetic leather finally obtained has better elastic recovery performance and is not easily deformed under stress. Furthermore, a composite layer structure of a surface layer, an elastic layer and a bottom layer is adopted, with an elastic elastic layer in the middle, so that the overall strength and mechanical properties of the leather base fabric are significantly improved.

[0030] The main innovation of this patent is that, based on the previous technology CN220314402U, an elastic layer is added, which retains the original excellent moisture permeability and breathability, improves the moisture permeability and breathability problems of traditional ultrafine fiber synthetic leather, and also gives the base fabric good elasticity and deformation resistance. It comprehensively gives the ultrafine fiber synthetic leather good moisture absorption, moisture discharge, and deformation resistance.

[0031] In a specific implementation, the elastic layer adopts a mesh structure. In the innovation of this technology, PHBV / PLA fiber and spandex yarn are woven to give the fabric elasticity. The elastic layer increases the layer structure of the base fabric, but the elastic layer with a mesh structure has good air permeability to drain water vapor without affecting the moisture absorption and moisture discharge properties of the base fabric.

[0032] In a preferred implementation, the PHBV / PLA fiber is a commercially available product of Ningbo Hesu Fiber Co., Ltd. The company has issued the relevant standard "Q_HS 001-2019 Qualitative and Quantitative Analysis Method of PHBV_PLA Blended Fibers and Other Fiber Mixtures of Textiles".

[0033] In a preferred embodiment, the spandex yarn is 30D and has a linear density of 3.33tex. The spandex yarn has very good elasticity, and its elastic elongation can be as high as 500% to 600%. At present, the more common spandex specifications on the market include 840D, 420D, 210D, 140D, 105D, 70D, 50D, 40D, 30D and 20D. Spandex above 140D is relatively coarse and hard, and is generally not made into loops for weaving. In order to improve the elasticity of the base fabric of this patent, 30D spandex yarn is selected to give the fabric unique elasticity.

[0034] In a specific implementation, the bottom layer is made of pure spun polypropylene staple fiber, spandex yarn and special-section polyester knitted. The applicant has found through research that the moisture content of general artificial leather is greater than 20%, which is enough for mold to grow. By giving the base fabric a quick-drying effect to prevent moisture accumulation, the fabric is given a certain anti-mold effect. Combined with the elastic layer, it has good anti-mold performance.

[0035] In a preferred embodiment, the bottom layer adopts a double-sided mesh structure. Figure 2 As shown, the utility model provides a schematic diagram of the organizational structure of the bottom layer. The bottom layer is knitted by a double-needle needle disc and a double-needle needle cylinder, and a 6F circuit is used as a cycle. According to the arrangement order from the needle disc to the needle cylinder:

[0036] The 1F route is composed of floating thread organization, tucking organization, loop organization and loop organization in sequence;

[0037] The 2F route is looping organization, floating organization, floating organization and floating organization in sequence;

[0038] The 3F route is composed of floating line organization, looping organization, floating line organization and floating line organization;

[0039] The 4F route is composed of tuck tissue, float tissue, loop tissue and loop tissue in sequence;

[0040] The 5F route is composed of floating line organization, looping organization, floating line organization and floating line organization;

[0041] The 6F route is composed of circle organization, floating line organization, floating line organization and floating line organization in sequence.

[0042] In a specific implementation, the 1F and 4F paths are threaded with pure polypropylene staple fiber yarns; the 2F and 3F paths are threaded with spandex yarns; and the 5F and 6F paths are threaded with special-section polyester yarns.

[0043] The polypropylene staple fiber pure spinning yarn of the present application is a commercially available product of Haiyan Jinyi Silk Spinning Co., Ltd.

[0044] In a preferred implementation, the special-shaped cross-section polyester uses yarn with a linear density of 8.3tex and a cross-section, which is also called cross-shaped polyester fiber on the market. Compared with ordinary round polyester, the moisture absorption and quick-drying performance of cross-shaped polyester fiber is significantly improved.

[0045] The utility model adopts a double-sided mesh structure to increase the air permeability of the base fabric, which is conducive to moisture removal. Secondly, the specific yarns are creatively selected from the existing yarns for combination, and the bottom layer made of pure spinning of polypropylene staple fibers has excellent moisture absorption and quick-drying performance and breathability, and the bottom layer adopts a combination of pure spinning of polypropylene staple fibers and spandex yarns, which has good elasticity. Pure spinning of polypropylene staple fibers has moisture absorption and quick-drying properties, thermal and wet comfort, and cooperates with the special-section polyester fibers with excellent moisture conductivity to give quick-drying performance, and the quick-drying effect is long-lasting.

[0046] The utility model selects PA6 ultrafine fiber and polyester ultrafine fiber, and uses needle punching machinery to form a fiber mesh base material to obtain a base cloth. This technology optimizes the base cloth performance of ultrafine fiber synthetic leather, so that the base cloth has excellent moisture permeability and breathability, thereby greatly improving the moisture permeability and breathability problems of traditional ultrafine fiber synthetic leather. It comprehensively gives the ultrafine fiber synthetic leather good moisture absorption and moisture discharge capabilities.

[0047] Furthermore, this technology uses PA6 ultrafine fibers, which have a soft feel, a large surface area and excellent water absorption properties, especially its linear density is very close to the bundled ultrafine collagen fibers of natural leather substrates, so PA6 ultrafine fibers have certain advantages as leather base fabrics. On the other hand, by combining PA6 ultrafine fibers with polyester ultrafine fibers, and through the composite of polyester ultrafine fibers, the aging resistance, tensile strength, tear strength, elongation, flexibility and other properties of the base fabric are improved.

[0048] In a preferred implementation, the surface layer is a non-woven fabric formed by interweaving PA6 ultrafine fibers, polyester ultrafine fibers and PET fibers by needle punching, and the PET fibers are provided with a PE coating layer.

[0049] In one implementation, the length of the polyester microfiber is not less than 20 mm.

[0050] By coating the PET fiber surface with PE, the fiber surface structure gives it a lasting moisture absorption and quick-drying function. Through this design, under the action of PA6 microfiber and PET fiber, the base fabric has excellent moisture absorption performance, and the PET fiber gives the base fabric a moisture absorption and quick-drying effect, which quickly evaporates water and prevents moisture accumulation in the base fabric and microfiber synthetic leather, thereby reducing mold growth and reducing mold erosion on leather materials.

[0051] In a specific implementation, the surface layer, elastic layer and bottom layer of the leather base fabric can be composited by thermal bonding, and the three sheets are coupled and linked by hot rolling process to form an integral sheet material. The base fabric produced by this process has the advantages of soft texture and good elasticity.

[0052] The utility model also provides a leather product leather, wherein the leather product leather is ultrafine fiber synthetic leather and is made of the above-mentioned leather base cloth.

[0053] For other structures of the leather base fabric and leather goods leather described in this embodiment, refer to the prior art.

[0054] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Therefore, any modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A base fabric for leather, characterized in that: The leather base fabric is used in superfine fiber synthetic leather; The leather base fabric comprises a surface layer, an elastic layer and a bottom layer which are tightly compounded along the thickness direction of the base fabric; The elastic layer is woven from spandex yarn and PHBV / PLA fiber.

2. The leather base fabric according to claim 1, characterized in that: The elastic layer adopts a mesh tissue structure.

3. The leather base fabric according to claim 2, characterized in that: The spandex yarn is 30D spandex yarn with a linear density of 3.33tex.

4. The leather base fabric according to claim 1, characterized in that: The bottom layer is knitted from pure spinning of polypropylene staple fibers, spandex yarns and polyester with special-shaped cross-sections.

5. The leather base fabric according to claim 4, characterized in that: The bottom layer is a double-sided mesh structure.

6. A leather product, characterized in that: The leather goods leather is ultrafine fiber synthetic leather, and the leather goods leather is made of the leather base fabric according to claim 5.

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