Low-temperature folding-resistant PVC artificial leather

Abstract

The invention relates to low-temperature folding-resistant PVC artificial leather, the PVC artificial leather comprises a PVC leather layer and a base cloth layer which are attached to each other, and the base cloth layer is an interlock weft-knitted fabric composed of 100% polyester fibers. The technical problem to be solved by the invention is to improve the folding resistance of the PVC artificial leather at low temperature.

Description

Technical Field

[0001] The invention relates to a PVC artificial leather which is resistant to low temperature folding and fatigue. Background Art

[0002] Artificial leather, such as polyvinyl chloride (PVC) artificial leather, is widely used in automotive interior materials. PVC artificial leather comprises a PVC leather layer, such as a dense epidermis layer and / or a porous foam layer. The PVC leather layer is usually bonded to a base fabric to further improve strength.

[0003] At present, most OEMs require artificial leather to be resistant to low temperature bending, and there is a trend of increasing strictness, from 30,000 times of bending at -10℃ to 30,000 times of bending at -20℃, and even -20

[0004] ℃, and can withstand 50,000 bends. However, existing artificial leather products are prone to failure in low-temperature folding tests. Flexing resistance, also known as fracture strength, is an indicator for measuring the bending resistance of leather and coating layers. During testing, the test instrument is usually bent or folded back and forth until the leather surface or body changes color, fuzzes, cracks, peels, or loses pulp. The number of bends indicates the quality of the leather's bending resistance. When the artificial leather's low-temperature folding resistance is insufficient, unqualified products are likely to appear, and it is easy to crack or be damaged within a certain period of use. Therefore, folding fastness is an important indicator of artificial leather.

[0005] In the prior art, in order to improve the low temperature fatigue resistance of artificial leather, most of them adopt a double skin structure or use low temperature resistant raw materials. However, the double skin structure is expensive and will lead to a decrease in the strength of artificial leather; the price of low temperature resistant raw materials is also high.

[0006] Therefore, the present invention needs to propose a new technical solution to solve at least one of the above-mentioned technical problems. Summary of the invention

[0007] Based on the above prior art, the object of the present invention is to improve the folding and fatigue resistance of PVC artificial leather at low temperatures.

[0008] To achieve the above technical objectives, the present invention provides a low-temperature folding and fatigue-resistant PVC artificial leather, the PVC artificial leather comprising a PVC leather layer and a base fabric layer bonded to each other, wherein the base fabric layer is a double rib weft knitted fabric composed of 100% polyester fiber (i.e., pure polyester).

[0009] The base fabric layer is the main supporting structure of PVC artificial leather, ensuring the mechanical strength of the entire artificial leather and playing a very important role in the entire structure. There are many types of base fabrics, and the differences in the material and weaving method of the base fabric will affect the performance changes of the entire artificial leather product. The inventor has found through a large number of experiments that the use of all-polyester double rib fabric can significantly improve the folding and fatigue resistance of artificial leather at low temperatures compared with other base fabric materials and weaving methods.

[0010] Weft knitted fabric is a fabric formed by weaving yarns horizontally to form coils, and the coils are interlaced. Double rib fabric, also known as double-sided fabric, is a variation of weft knitted fabric. It is composed of two rib structures compounded with each other, that is, the coil wale of another rib structure is arranged between the coil wales of one rib structure. Among them, the front coil wale of one rib structure covers the back coil wale of another rib structure, so that the front coils are visible on both sides of the fabric, forming a double front structure.

[0011] In an advantageous embodiment, the base fabric layer has a grammage of greater than 90 grams per square meter and less than 125 grams per square meter, thereby further improving the folding and fatigue resistance of the artificial leather at low temperatures.

[0012] In an advantageous embodiment, the base fabric layer has a static elongation of 80% to 120% in the longitudinal direction and 100% to 140% in the transverse direction as tested according to standard DIN 53360:1982, so that the base fabric has relatively high elasticity and extensibility.

[0013] In an advantageous embodiment, the yarns of the base fabric layer have a linear density of 107 dtex to 114 dtex.

[0014] In an advantageous embodiment, the breaking strength of the yarns of the base fabric layer is 3.75 cN / dtex to 4.75 cN / dtex.

[0015] In principle, the PVC leather layer can adopt a layer structure composed of any combination of a PVC epidermis layer and / or a PVC foam layer, such as a double epidermis structure, or a structure composed of an epidermis layer and a foam layer. In an advantageous embodiment, the PVC leather layer includes a PVC epidermis layer and a PVC foam layer, which is conducive to further improving the strength of the artificial leather and reducing the cost.

[0016] In an advantageous embodiment, the PVC leather layer and the base fabric layer are bonded to each other via an adhesive layer, wherein the adhesive can penetrate into the base fabric layer, thereby tightly bonding the PVC leather layer to the base fabric layer.

[0017] In an advantageous embodiment, the outer surface of the PVC leather layer has a paint layer, thereby improving the surface properties of the artificial leather such as stain resistance and wear resistance.

[0018] In an advantageous embodiment, the PVC artificial leather is tested according to standard ISO 5402-1:2017 (E) to withstand at least 50,000 bendings at -20°C. This means that after the PVC artificial leather according to the present invention is repeatedly bent at least 50,000 times at -20°C, the surface of the artificial leather does not show cracking and other obvious changes in appearance.

[0019] Also advantageously, the PVC skin layer comprises 45 to 55 parts by weight of PVC resin, 45 to 55 parts by weight of plasticizer, 0.5 to 1.5 parts by weight of stabilizer and 4 to 10 parts by weight of color paste, wherein the total weight of the PVC resin and the plasticizer is 100 parts by weight.

[0020] Also advantageously, the PVC foam layer comprises 45 to 55 parts by weight of PVC resin, 45 to 55 parts by weight of plasticizer, 0.5 to 1.5 parts by weight of stabilizer, 0.4 to 5 parts by weight of color paste and 0.15 to 1 part by weight of foaming agent, wherein the total weight of the PVC resin and the plasticizer is 100 parts by weight.

[0021] Advantageously, the adhesive layer uses PVC-containing glue, which includes 50 to 55 parts by weight of PVC resin, 45 to 50 parts by weight of plasticizer and 0.5 to 1.5 parts by weight of stabilizer, wherein the total weight of the PVC resin and the plasticizer is 100 parts by weight.

[0022] The PVC resin used in the present invention can be conventional PVC powder, granules, etc. The plasticizer used in the present invention can be a conventional plasticizer, such as o-phthalate plasticizers and paraphthalate plasticizers. The stabilizer used in the present invention can be a conventional stabilizer, such as epoxy stabilizer. The PVC resin in the PVC skin layer can be the same as or different from the PVC resin in the PVC foam layer; the plasticizer in the PVC skin layer can be the same as or different from the plasticizer in the PVC foam layer; the stabilizer in the PVC skin layer can be the same as or different from the stabilizer in the PVC foam layer.

[0023] The foaming agent used in the PVC foaming layer can be various conventional physical foaming agents well known to those skilled in the art, such as low-boiling liquids of alkanes; or chemical foaming agents, such as azo foaming agents.

[0024] In addition, the PVC skin layer and / or foaming layer may contain other additives, and conventional materials well known to those skilled in the art may be selected according to needs.

[0025] The PVC artificial leather according to the present invention can be used in, for example, the field of automobile interior decoration.

[0026] The advantages of the present invention are that by adopting a specific base fabric material and weaving method, namely, a polyester double rib fabric, the low-temperature folding resistance of artificial leather can be significantly improved at a cost-effective manner without changing the current product structure or adding additional equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A partial schematic diagram of a double-sided cloth used in Examples 1 to 6 of the present invention is shown.

[0028] Figure 2 A partial schematic diagram of the polyester-cotton blended fabric used in Comparative Example 1 of the present invention is shown.

[0029] Figure 3 A partial schematic diagram of the random pattern cloth used in Comparative Example 2 of the present invention is shown.

[0030] Figure 4 A partial schematic diagram of the nonwoven fabric used in Comparative Example 3 of the present invention is shown. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is clearly and completely described below in combination with embodiments and comparative examples. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative work are within the scope of protection of the present invention.

[0032] Description of various base fabrics used in the embodiments and comparative examples:

[0033] The double rib fabric used in Examples 1 to 6 is also called double-sided fabric. Figure 1 As shown in the figure, the front coil wale of one rib structure covers the back coil wale of another rib structure. The coil structure of both sides is the same, and the two adjacent coils are staggered by one position. The color distinction between black yarn and white yarn in the figure is used to clearly show the weaving method of double-sided fabric, and does not limit the color, material, thickness, etc. of the yarn. The linear density of the yarn woven into the double-sided fabric is 111.8dtex, and the breaking strength is 3.97cN / dtex.

[0034] The polyester-cotton blended fabric used in Comparative Example 1 is a textile woven from 65%-67% polyester and 33%-35% cotton blended yarns, such as Figure 2 As shown, it is woven in a single-sided plain weave.

[0035] The random flower cloth used in Comparative Example 2 is also called single-sided wrinkled cloth, and its weaving method is as follows: Figure 3 As shown, the fabric surface is uneven.

[0036] The nonwoven fabric used in Comparative Example 3 is different from the woven fabric, such as Figure 4 As shown, non-woven fabrics are made by directional or random arrangement of short fibers or filaments to form a fiber web structure, which is then reinforced by mechanical, thermal bonding or chemical methods.

[0037] In the description of performance below, "longitudinal" refers to the direction along which the machine runs during production, and the up and down directions in the figure form the longitudinal direction of the base fabric and the finished product; "lateral" refers to the vertical direction along which the machine runs during production, and the left and right directions in the figure form the lateral direction of the base fabric and the finished product.

[0038] Example 1

[0039] Follow the steps below to prepare PVC artificial leather:

[0040] Mixing:

[0041] 50 parts by weight of PVC powder, 50 parts by weight of methyl phthalate plasticizer, 1 part by weight of epoxy stabilizer and 4 parts by weight of color paste were mixed to prepare a PVC skin layer slurry.

[0042] 50 parts by weight of PVC powder, 50 parts by weight of methyl phthalate plasticizer, 1 part by weight of epoxy stabilizer, 0.4 parts by weight of color paste and 0.8 parts by weight of foaming agent were mixed to prepare a PVC foaming layer slurry.

[0043] 50 parts by weight of PVC powder, 50 parts by weight of n-octyl phthalate plasticizer and 1 part by weight of epoxy stabilizer were mixed to prepare adhesive layer slurry.

[0044] Coating: Send release paper, coat PVC skin layer slurry on the release paper, and dry; then coat PVC foam layer slurry, and dry; then coat adhesive layer slurry; then laminate the base fabric, which is a double-sided polyester fabric with a grammage of 120 g / m2, and has a static elongation of 90% to 120% in the longitudinal direction and 110% to 140% in the transverse direction according to standard DIN 53360:1982, and is dried at a temperature of 200°C; peel off the release paper and roll it up.

[0045] Printing and embossing: Print polyurethane paint on the surface of the PVC skin layer and emboss.

[0046] Cutting: The finished product obtained after preparation can be cut and packaged according to the required size.

[0047] Example 2

[0048] Follow the steps below to prepare PVC artificial leather:

[0049] Mixing:

[0050] 50 parts by weight of PVC powder, 50 parts by weight of methyl phthalate plasticizer, 1 part by weight of epoxy stabilizer and 4 parts by weight of color paste were mixed to prepare a PVC skin layer slurry.

[0051] 50 parts by weight of PVC powder, 50 parts by weight of methyl phthalate plasticizer, 1 part by weight of epoxy stabilizer, 0.4 parts by weight of color paste and 0.8 parts by weight of foaming agent were mixed to prepare a PVC foaming layer slurry.

[0052] An adhesive layer slurry was prepared by mixing 50 parts by weight of PVC powder, 50 parts by weight of methyl phthalate plasticizer, and 1 part by weight of epoxy stabilizer.

[0053] Coating: Send release paper, coat PVC skin layer slurry on the release paper, and dry; then coat PVC foam layer slurry, and dry; then coat adhesive layer slurry; then laminate the base fabric, which is a double-sided polyester fabric with a grammage of 120 g / m2, and has a static elongation of 90% to 120% in the longitudinal direction and 110% to 140% in the transverse direction according to standard DIN 53360:1982, and is dried at a temperature of 200°C; peel off the release paper and roll it up.

[0054] Printing and embossing: Print polyurethane paint on the surface of the PVC skin layer and emboss.

[0055] Cutting: The finished product obtained after preparation can be cut and packaged according to the required size.

[0056] Example 3

[0057] Follow the steps below to prepare PVC artificial leather:

[0058] Mixing:

[0059] 50 parts by weight of PVC powder, 50 parts by weight of methyl phthalate plasticizer, 1 part by weight of epoxy stabilizer and 4 parts by weight of color paste were mixed to prepare a PVC skin layer slurry.

[0060] 50 parts by weight of PVC powder, 50 parts by weight of methyl phthalate plasticizer, 1 part by weight of epoxy stabilizer, 0.4 parts by weight of color paste and 0.8 parts by weight of foaming agent were mixed to prepare a PVC foaming layer slurry.

[0061] An adhesive layer slurry was prepared by mixing 50 parts by weight of PVC powder, 50 parts by weight of methyl phthalate plasticizer, and 1 part by weight of epoxy stabilizer.

[0062] Coating: Send release paper, coat PVC skin layer slurry on the release paper, and dry; then coat PVC foam layer slurry, and dry; then coat adhesive layer slurry; then laminate the base fabric, which is a double-sided polyester fabric with a grammage of 95 g / m2, and has a static elongation of 80% to 100% in the longitudinal direction and 100% to 120% in the transverse direction according to standard DIN 53360:1982, and is dried at a temperature of 200°C; peel off the release paper and roll it up.

[0063] Printing and embossing: Print polyurethane paint on the surface of the PVC skin layer and emboss.

[0064] Cutting: The finished product obtained after preparation can be cut and packaged according to the required size.

[0065] Example 4

[0066] Follow the steps below to prepare PVC artificial leather:

[0067] Mixing:

[0068] 50 parts by weight of PVC powder, 50 parts by weight of methyl phthalate plasticizer, 1 part by weight of epoxy stabilizer and 4 parts by weight of color paste were mixed to prepare a PVC skin layer slurry.

[0069] 50 parts by weight of PVC powder, 50 parts by weight of methyl phthalate plasticizer, 1 part by weight of epoxy stabilizer, 0.4 parts by weight of color paste and 0.8 parts by weight of foaming agent were mixed to prepare a PVC foaming layer slurry.

[0070] An adhesive layer slurry was prepared by mixing 50 parts by weight of PVC powder, 50 parts by weight of methyl phthalate plasticizer, and 1 part by weight of epoxy stabilizer.

[0071] Coating: Send release paper, coat PVC skin layer slurry on the release paper, and dry; then coat PVC foam layer slurry, and dry; then coat adhesive layer slurry; then laminate the base fabric, which is a double-sided polyester fabric with a grammage of 125 g / m2, and has a static elongation of 100% to 120% in the longitudinal direction and 120% to 140% in the transverse direction according to standard DIN 53360:1982, and is dried at a temperature of 200°C; peel off the release paper and roll it up.

[0072] Printing and embossing: Print polyurethane paint on the surface of the PVC skin layer and emboss.

[0073] Cutting: The finished product obtained after preparation can be cut and packaged according to the required size.

[0074] Example 5

[0075] Follow the steps below to prepare PVC artificial leather:

[0076] Mixing:

[0077] 50 parts by weight of PVC powder, 50 parts by weight of methyl phthalate plasticizer, 1 part by weight of epoxy stabilizer and 4 parts by weight of color paste were mixed to prepare a PVC skin layer slurry.

[0078] 50 parts by weight of PVC powder, 50 parts by weight of methyl phthalate plasticizer, 1 part by weight of epoxy stabilizer, 0.4 parts by weight of color paste and 0.8 parts by weight of foaming agent were mixed to prepare a PVC foaming layer slurry.

[0079] An adhesive layer slurry was prepared by mixing 50 parts by weight of PVC powder, 50 parts by weight of methyl phthalate plasticizer, and 1 part by weight of epoxy stabilizer.

[0080] Coating: Send release paper, coat PVC skin layer slurry on the release paper, and dry; then coat PVC foam layer slurry, and dry; then coat adhesive layer slurry; then laminate the base fabric, which is a double-sided polyester fabric with a grammage of 130 g / m2, and has a static elongation of 70% to 90% in the longitudinal direction and 80% to 100% in the transverse direction according to standard DIN 53360:1982, and is dried at a temperature of 200°C; peel off the release paper and roll it up.

[0081] Printing and embossing: Print polyurethane paint on the surface of the PVC skin layer and emboss.

[0082] Cutting: The finished product obtained after preparation can be cut and packaged according to the required size.

[0083] Example 6

[0084] Follow the steps below to prepare PVC artificial leather:

[0085] Mixing:

[0086] 50 parts by weight of PVC powder, 50 parts by weight of methyl phthalate plasticizer, 1 part by weight of epoxy stabilizer and 4 parts by weight of color paste were mixed to prepare a PVC skin layer slurry.

[0087] 50 parts by weight of PVC powder, 50 parts by weight of methyl phthalate plasticizer, 1 part by weight of epoxy stabilizer, 0.4 parts by weight of color paste and 0.8 parts by weight of foaming agent were mixed to prepare a PVC foaming layer slurry.

[0088] An adhesive layer slurry was prepared by mixing 50 parts by weight of PVC powder, 50 parts by weight of methyl phthalate plasticizer, and 1 part by weight of epoxy stabilizer.

[0089] Coating: Send release paper, coat PVC skin layer slurry on the release paper, and dry; then coat PVC foam layer slurry, and dry; then coat adhesive layer slurry; then laminate the base fabric, which is a double-sided polyester fabric with a grammage of 85 g / m2, and has a static elongation of 80% to 95% in the longitudinal direction and 100% to 125% in the transverse direction according to standard DIN 53360:1982, and is dried at a temperature of 200°C; peel off the release paper and roll it up.

[0090] Printing and embossing: Print polyurethane paint on the surface of the PVC skin layer and emboss.

[0091] Cutting: The finished product obtained after preparation can be cut and packaged according to the required size.

[0092] Comparative Example 1

[0093] Follow the steps below to prepare PVC artificial leather:

[0094] Mixing:

[0095] 50 parts by weight of PVC powder, 50 parts by weight of methyl phthalate plasticizer, 1 part by weight of epoxy stabilizer and 4 parts by weight of color paste were mixed to prepare a PVC skin layer slurry.

[0096] 50 parts by weight of PVC powder, 50 parts by weight of methyl phthalate plasticizer, 1 part by weight of epoxy stabilizer, 0.4 parts by weight of color paste and 0.8 parts by weight of foaming agent were mixed to prepare a PVC foaming layer slurry.

[0097] An adhesive layer slurry was prepared by mixing 50 parts by weight of PVC powder, 50 parts by weight of methyl phthalate plasticizer, and 1 part by weight of epoxy stabilizer.

[0098] Coating: Send release paper, coat PVC skin layer slurry on the release paper, and dry; then coat PVC foam layer slurry, and dry; then coat adhesive layer slurry; then laminate the base fabric, which is a polyester-cotton blended fabric with a grammage of 140 g / m2, and has a static elongation of 40% to 60% in the longitudinal direction and 90% to 110% in the transverse direction according to standard DIN 53360:1982, and is dried at a temperature of 200°C; peel off the release paper and roll it up.

[0099] Printing and embossing: Print polyurethane paint on the surface of the PVC skin layer and emboss.

[0100] Cutting: The finished product obtained after preparation can be cut and packaged according to the required size.

[0101] Comparative Example 2

[0102] Follow the steps below to prepare PVC artificial leather:

[0103] Mixing:

[0104] 50 parts by weight of PVC powder, 50 parts by weight of methyl phthalate plasticizer, 1 part by weight of epoxy stabilizer and 4 parts by weight of color paste were mixed to prepare a PVC skin layer slurry.

[0105] 50 parts by weight of PVC powder, 50 parts by weight of methyl phthalate plasticizer, 1 part by weight of epoxy stabilizer, 0.4 parts by weight of color paste and 0.8 parts by weight of foaming agent were mixed to prepare a PVC foaming layer slurry.

[0106] An adhesive layer slurry was prepared by mixing 50 parts by weight of PVC powder, 50 parts by weight of methyl phthalate plasticizer, and 1 part by weight of epoxy stabilizer.

[0107] Coating: Send release paper, coat PVC skin layer slurry on the release paper, and dry; then coat PVC foam layer slurry, and dry; then coat adhesive layer slurry; then laminate the base fabric, which is made of 120 g / m2 all-polyester random pattern fabric, and has a static elongation of 45% to 70% in the longitudinal direction and 70% to 90% in the transverse direction according to standard DIN 53360:1982, and is dried at 200°C; peel off the release paper and roll it up.

[0108] Printing and embossing: Print polyurethane paint on the surface of the PVC skin layer and emboss.

[0109] Cutting: The finished product obtained after preparation can be cut and packaged according to the required size.

[0110] Comparative Example 3

[0111] Follow the steps below to prepare PVC artificial leather:

[0112] Mixing:

[0113] 50 parts by weight of PVC powder, 50 parts by weight of methyl phthalate plasticizer, 1 part by weight of epoxy stabilizer and 4 parts by weight of color paste were mixed to prepare a PVC skin layer slurry.

[0114] 50 parts by weight of PVC powder, 50 parts by weight of methyl phthalate plasticizer, 1 part by weight of epoxy stabilizer, 0.4 parts by weight of color paste and 0.8 parts by weight of foaming agent were mixed to prepare a PVC foaming layer slurry.

[0115] An adhesive layer slurry was prepared by mixing 50 parts by weight of PVC powder, 50 parts by weight of methyl phthalate plasticizer, and 1 part by weight of epoxy stabilizer.

[0116] Coating: Send release paper, coat PVC skin layer slurry on the release paper, and dry; then coat PVC foam layer slurry, and dry; then coat adhesive layer slurry; then laminate the base fabric, which is made of 120 g / m2 polyester non-woven fabric, and has a static elongation of 4% to 8% in the longitudinal direction and 15% to 25% in the transverse direction according to standard DIN 53360:1982, and is dried at 200°C; peel off the release paper and roll it up.

[0117] Printing and embossing: Print polyurethane paint on the surface of the PVC skin layer and emboss.

[0118] Cutting: The finished product obtained after preparation can be cut and packaged according to the required size.

[0119] The following performance tests were performed on the PVC artificial leather samples obtained from Examples 1 to 6 and Comparative Examples 1 to 3, and the test results are shown in Table 1:

[0120] The low temperature fatigue resistance is tested according to the standard ISO 5402-1:2017(E). The test conditions are to bend the sample repeatedly 30,000 times at a low temperature of -10℃ and 50,000 times at a low temperature of -20℃. At the end of the test, if there are no cracks, cracks or discoloration on the surface of the sample, it means that the test has passed and it is resistant to low temperature fatigue under this condition; on the contrary, if the surface of the sample is cracked or discolored, it means that the test has failed and it is not resistant to low temperature fatigue under this condition.

[0121] Elongation and tensile strength were tested according to standard GMW 3010 code H (2019-7).

[0122] Table 1

[0123]

[0124]

[0125] According to the test results in Table 1, the PVC artificial leather obtained according to Examples 1 to 6 of the present invention exhibits significantly improved low-temperature folding resistance compared to Comparative Examples 1 to 3, while maintaining good elongation and tensile strength. This is because the base fabric used in Examples 1 to 6 is a double-sided fabric made of all polyester. Among them, the gram weight of the base fabric layer in Examples 1 to 4 is greater than 90 grams per square meter and does not exceed 125 grams per square meter. The PVC artificial leather obtained not only exhibits good folding resistance when repeatedly bent 30,000 times at a low temperature of -10°C, but also exhibits good folding resistance when repeatedly bent 50,000 times at a low temperature of -20°C. However, the PVC artificial leather obtained in Example 5 with a larger base fabric gram weight and Example 6 with a smaller base fabric gram weight has reduced folding resistance when repeatedly bent 50,000 times at a low temperature of -20°C.

[0126] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those skilled in the art, the above-mentioned various technical features can be arbitrarily combined to make various modifications and improvements without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered as the protection scope of the present invention.

Claims

1. A PVC artificial leather resistant to low temperature fatigue, comprising a PVC leather layer and a base fabric layer bonded to each other, characterized in that: The base fabric layer is an interlock weft knitted fabric composed of 100% polyester fibers.

2. The low temperature fatigue resistant PVC artificial leather according to claim 1, characterized in that: The base fabric layer has a grammage of greater than 90 grams per square meter and less than 125 grams per square meter.

3. The low temperature fatigue resistant PVC artificial leather according to claim 1, characterized in that: The base fabric layer has a static elongation of 80% to 120% in the longitudinal direction and 100% to 140% in the transverse direction as tested according to standard DIN 53360:1982.

4. The low temperature fatigue resistant PVC artificial leather according to claim 1, characterized in that: The linear density of the yarns of the base fabric layer is 107 dtex to 114 dtex.

5. The low temperature fatigue resistant PVC artificial leather according to claim 1, characterized in that: The breaking strength of the yarn of the base fabric layer is 3.75 cN / dtex to 4.75 cN / dtex.

6. The low temperature fatigue resistant PVC artificial leather according to any one of claims 1 to 5, characterized in that: The PVC leather layer comprises a PVC surface layer and a PVC foaming layer.

7. The low temperature fatigue resistant PVC artificial leather according to any one of claims 1 to 5, characterized in that: The PVC leather layer and the base fabric layer are bonded to each other via an adhesive layer.

8. The low temperature fatigue resistant PVC artificial leather according to any one of claims 1 to 5, characterized in that: The outer surface of the PVC leather layer is provided with a paint layer.

9. The low temperature fatigue resistant PVC artificial leather according to any one of claims 1 to 5, characterized in that: The PVC artificial leather is tested according to standard ISO 5402-1:2017 to withstand at least 50,000 bendings at -20°C.

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