CN114603966A - Thermoplastic artificial leather, manufacturing method thereof and thermoplastic composite base material - Google Patents

Abstract

The invention relates to thermoplastic artificial leather, a manufacturing method thereof and a thermoplastic composite base material. The thermoplastic artificial leather comprises a thermoplastic composite substrate and a textile substrate. The thermoplastic composite substrate may be one of the following composite structures: a three-layer composite structure of a foaming thermoplastic elastic layer, a non-foaming thermoplastic elastic layer and a thermoplastic adhesive layer; a double-layer composite structure of a foaming thermoplastic elastic layer and a thermoplastic adhesive layer; and a double-layer composite structure of a foaming thermoplastic elastic layer and a non-foaming thermoplastic elastic layer. The foaming thermoplastic elastic layer is provided with a first surface, a second surface and a plurality of foaming structures, wherein the second surface is opposite to the first surface. The unfoamed thermoplastic elastic layer is arranged on the first surface of the foamed thermoplastic elastic layer. The thermoplastic adhesive layer is arranged on the second surface of the foaming thermoplastic elastic layer. The thermoplastic composite substrate is attached to the textile substrate, so that the artificial leather with good surface wear resistance and soft hand feeling can be prepared, and the preparation process does not need to use a solvent, thereby being more in line with the requirement of environmental protection.

Description

Thermoplastic artificial leather and its manufacturing method and thermoplastic composite substrate

This application is a divisional application of an invention patent application with an application date of April 14, 2015, an application number of 201510173892.X and the title of "thermoplastic artificial leather and its manufacturing method and thermoplastic composite substrate".

【Technical field】

The invention relates to an artificial leather and a manufacturing method thereof, in particular to a thermoplastic artificial leather and a manufacturing method thereof and a thermoplastic composite base material.

【Background technique】

In the process of conventional artificial leather, organic solvents (such as DMF) are used in both dry and wet processes. Although organic solvents can be recycled, the construction cost of recycling equipment is quite high, and the recovery rate must reach 100%. It is also quite difficult, so it is difficult to achieve zero detection of organic solvents, which does not meet the requirements of environmental protection. In addition, the hand-feel and abrasion resistance (stoll abrasion=1500-; test method: NIKE G12) of the artificial leather produced by the conventional process are also generally poor.

Conventional artificial leather and its manufacturing method are analyzed as the following prior art patent documents.

1.TW I409375

Method: Use thermoplastic film to laminate special-shaped section fibers, and then process to obtain leather.

Disadvantages: no foam structure, leather is too hard, and feel bad.

2.TW I290568

Method: Use the thermoplastic film to reprocess the surface to cover the foam layer to obtain leather.

Disadvantages: The secondary processing surface layer process efficiency is not good.

3.TW 442392

Method: Use thermoplastic film coated base cloth to obtain leather.

Disadvantages: no foam structure, leather is too hard, and feel bad.

Based on the above analysis, it is necessary to provide an innovative and progressive thermoplastic artificial leather, a manufacturing method thereof, and a thermoplastic composite substrate to solve the above-mentioned shortcomings of the prior art.

[Content of the invention]

The invention provides a thermoplastic artificial leather, comprising a thermoplastic composite base material and a textile base material. The thermoplastic composite substrate includes a foamed thermoplastic elastic layer, an unfoamed thermoplastic elastic layer and a thermoplastic adhesive layer. The foamed thermoplastic elastic layer has a first surface, a second surface and a plurality of foamed structures, and the second surface is opposite to the first surface. The unfoamed thermoplastic elastic layer is disposed on the first surface of the foamed thermoplastic elastic layer. The thermoplastic adhesive layer is disposed on the second surface of the foamed thermoplastic elastic layer. The textile substrate is attached to the thermoplastic adhesive layer of the thermoplastic composite substrate.

The present invention further provides a method for manufacturing thermoplastic artificial leather, comprising: preparing a thermoplastic composite substrate, the thermoplastic composite substrate comprising a foamed thermoplastic elastic layer, an unfoamed thermoplastic elastic layer and a thermoplastic adhesive layer, The foamed thermoplastic elastic layer has a first surface, a second surface and a plurality of foamed structures, the second surface is opposite to the first surface, and the unfoamed thermoplastic elastic layer is disposed on the foamed thermoplastic elastic layer The first surface of the thermoplastic adhesive layer is disposed on the second surface of the foamed thermoplastic elastic layer; and the thermoplastic adhesive layer of the thermoplastic composite substrate is bonded to the textile substrate.

The present invention further provides a thermoplastic composite substrate, comprising a foamed thermoplastic elastic layer, an unfoamed thermoplastic elastic layer and a thermoplastic adhesive layer. The foamed thermoplastic elastic layer has a first surface, a second surface and a plurality of foamed structures, and the second surface is opposite to the first surface. The unfoamed thermoplastic elastic layer is disposed on the first surface of the foamed thermoplastic elastic layer. The thermoplastic adhesive layer is disposed on the second surface of the foamed thermoplastic elastic layer.

The present invention further provides a thermoplastic composite substrate comprising a foamed thermoplastic elastic layer and an unfoamed thermoplastic elastic layer. The foamed thermoplastic elastic layer has a first surface, a second surface and a plurality of foamed structures, and the second surface is opposite to the first surface. The unfoamed thermoplastic elastic layer is disposed on the first surface of the foamed thermoplastic elastic layer.

The present invention further provides a thermoplastic composite substrate comprising a foamed thermoplastic elastic layer and a thermoplastic adhesive layer. The foamed thermoplastic elastic layer has a first surface, a second surface and a plurality of foamed structures, and the second surface is opposite to the first surface. The thermoplastic adhesive layer is disposed on the second surface of the foamed thermoplastic elastic layer.

In the present invention, a three-layer composite structure of a foamed thermoplastic elastic layer, an unfoamed thermoplastic elastic layer and a thermoplastic adhesive layer, a double-layer composite structure of a foamed thermoplastic elastic layer and an unfoamed thermoplastic elastic layer, or a foamed thermoplastic elastic layer can be used respectively. The thermoplastic elastic layer and the thermoplastic adhesive layer are double-layered composite structure to make a thermoplastic composite substrate, and the textile substrate and the thermoplastic composite substrate are bonded together to obtain good abrasion resistance (stoll abrasion=3000+; Test method: NIKE G12), artificial leather with peel strength greater than 4.0kg/cm ² and soft leather feel. In addition, the present invention can prepare artificial leather without using a solvent, and also meets the requirements of environmental protection.

In order to more clearly understand the technical means of the present invention, which can be implemented in accordance with the contents of the description, and to make the objects, features and advantages of the present invention more obvious and easy to understand, the following preferred embodiments are given in conjunction with the accompanying drawings. Details are as follows.

【Description of drawings】

Fig. 1 shows the structural schematic diagram of the thermoplastic artificial leather of the present invention;

Fig. 2 shows the flow chart of the manufacturing method of thermoplastic artificial leather of the present invention;

3A to 3B show schematic diagrams of the manufacturing method of the thermoplastic artificial leather of the present invention;

FIG. 4 shows a schematic diagram of the process of preparing a thermoplastic composite substrate according to the present invention;

FIG. 5 shows another schematic diagram of the process of preparing the thermoplastic composite substrate according to the present invention;

Fig. 6 shows the cross-section optical microscope observation photo of the thermoplastic artificial leather of the present invention;

FIG. 7 shows another structural schematic diagram of the thermoplastic composite substrate of the present invention;

Figure 8 shows another structural schematic diagram of the thermoplastic artificial leather of the present invention;

Figure 9 shows yet another structural schematic diagram of the thermoplastic composite substrate of the present invention; and

FIG. 10 shows yet another structural schematic diagram of the thermoplastic artificial leather of the present invention.

[Description of reference numerals]

10 Thermoplastic artificial leather

12 Thermoplastic composite substrates

122 Foamed thermoplastic elastic layer

122A first surface

122B Second Surface

122F foam structure

124 Unfoamed thermoplastic elastic layer

126 Thermoplastic Adhesive Layer

14 Textile substrates

31 The first raw material

32 Second raw material

33 Third raw material

40 Extrusion unit

Steps S21～S22

【Detailed ways】

Referring to FIG. 1 , it is a schematic diagram showing the structure of the thermoplastic artificial leather of the present invention. The thermoplastic artificial leather 10 of the present invention includes a thermoplastic composite substrate 12 and a textile substrate 14 .

The thermoplastic composite substrate 12 includes a foamed thermoplastic elastic layer 122 , an unfoamed thermoplastic elastic layer 124 and a thermoplastic adhesive layer 126 .

The foamed thermoplastic elastic layer 122 has a first surface 122A, a second surface 122B and a plurality of foamed structures 122F. The second surface 122B is opposite to the first surface 122A. In this embodiment, the material of the foamed thermoplastic elastic layer 122 may be thermoplastic polyurethane (TPU), thermoplastic polyester elastomer (TPEE) or polyolefin elastomer (TPO). The Shore hardness of the foamed thermoplastic elastic layer 122 is 50A to 85A.

In addition, in order to make the foamed thermoplastic elastic layer 122 have a rich and resilient leather feel, preferably, the foaming density decrease rate (density after foaming/density before foaming) of the foamed thermoplastic elastic layer 122 should be 40 to 90%, and these foam structures 122F should be 20 to 300 microns in size.

The unfoamed thermoplastic elastic layer 124 is disposed on the first surface 122A of the foamed thermoplastic elastic layer 122 . In this embodiment, the material of the unfoamed thermoplastic elastic layer 124 may be thermoplastic polyurethane (TPU), thermoplastic polyester elastomer (TPEE) or polyolefin elastomer (TPO), and preferably, the The Shore hardness of the unfoamed thermoplastic elastic layer 124 is 60A to 80A.

In addition, in order to increase the richness and leather feel of the thermoplastic artificial leather 10 , preferably, the thickness ratio of the unfoamed thermoplastic elastic layer 124 to the foamed thermoplastic elastic layer 122 is 95:5 to 5:95.

The thermoplastic adhesive layer 126 is disposed on the second surface 122B of the foamed thermoplastic elastic layer 122 . In this embodiment, the thermoplastic adhesive layer 126 is a hot melt adhesive layer, and the material of the thermoplastic adhesive layer 126 can be thermoplastic polyurethane (TPU), thermoplastic polyester elastomer (TPEE), polyolefin-based elastic body (TPO) or aqueous paste. In addition, if the thermoplastic adhesive layer uses TPU, TPEE or TPO, preferably, the Shore hardness of the thermoplastic adhesive layer 126 is 60A to 90A.

The textile substrate 14 is attached to the thermoplastic adhesive layer 126 of the thermoplastic composite substrate 12 . In this embodiment, the textile substrate 14 can be non-woven fabric or fabric.

FIG. 2 shows the flow chart of the manufacturing method of the thermoplastic artificial leather of the present invention. 3A to 3B are schematic diagrams showing the manufacturing method of the thermoplastic artificial leather of the present invention. Referring to step S21 of FIG. 2 and FIG. 3A , the thermoplastic composite substrate 12 is prepared. In this step, the thermoplastic composite substrate 12 includes a foamed thermoplastic elastic layer 122 , an unfoamed thermoplastic elastic layer 124 and a thermoplastic adhesive layer 126 . The foamed thermoplastic elastic layer 122 has a first surface 122A, a second surface 122B and a plurality of foamed structures 122F, and the second surface 122B is opposite to the first surface 122A. The unfoamed thermoplastic elastic layer 124 is disposed on the first surface 122A of the foamed thermoplastic elastic layer 122 . The thermoplastic adhesive layer 126 is disposed on the second surface 122B of the foamed thermoplastic elastic layer 122 .

Referring to FIG. 4 , it shows a schematic diagram of the process of preparing the thermoplastic composite substrate according to the present invention. In this embodiment, the method for preparing the thermoplastic composite substrate 12 includes:

Step 1: Provide a first raw material 31, a second raw material 32 and a third raw material 33, the first raw material 31 is used to make the unfoamed thermoplastic elastic layer 124, and the second raw material 32 is used to make the foamed thermoplastic elastic layer 124 For the elastic layer 122 , the third raw material 33 is used to manufacture the thermoplastic adhesive layer 126 . In this step, the first raw material 31 , the second raw material 32 and the third raw material 33 may be thermoplastic polyurethane (TPU), thermoplastic polyester elastomer (TPEE) or polyolefin elastomer (TPO). And preferably, the melting point of the first raw material 31 is 140 to 165 °C, the melting point of the second raw material 32 is 135 to 150 °C, and the melting point of the third raw material 33 is 90 to 133 °C. In addition, in order to make the moisture content of the first raw material 31, the second raw material 32 and the third raw material 33 all less than 300 ppm, the first raw material 31, the second raw material 32 and the third raw material 33 can be dried. .

Step 2: After the first raw material 31, the second raw material 32 and the third raw material 33 are melted by the extrusion device 40, the thermoplastic composite substrate 12 is co-extruded. In this step, the second raw material 32 can be foamed, so that the second raw material 32 can be used to form the foamed thermoplastic elastic layer 122 . Preferably, the foaming treatment method is selected from one of the following: microsphere foaming, nitrogen foaming, carbon dioxide foaming and carbon dioxide supercritical foaming.

Referring to FIG. 5 , it shows another schematic diagram of the process of preparing the thermoplastic composite substrate according to the present invention. In another embodiment, the method of making the thermoplastic composite substrate 12 may include:

Step 1: Provide a first raw material 31 and a second raw material 32 , the first raw material 31 is used for making the unfoamed thermoplastic elastic layer 124 , and the second raw material 32 is used for making the foamed thermoplastic elastic layer 122 . In this step, the first raw material 31 and the second raw material 32 may be thermoplastic polyurethane (TPU), thermoplastic polyester elastomer (TPEE) or polyolefin elastomer (TPO). And preferably, the melting point of the first raw material 31 is 140 to 165°C, and the melting point of the second raw material 32 is 135 to 150°C. In addition, in order to make the moisture content of the first raw material 31 and the second raw material 32 both less than 300 ppm, the first raw material 31 and the second raw material 32 may be dried.

Step 2: After the first raw material 31 and the second raw material 32 are melted by the extrusion device 40, the unfoamed thermoplastic elastic layer 124 and the foamed thermoplastic elastic layer 122 are co-extruded. In this step, the second raw material 32 can be foamed, so that the second raw material 32 can be used to form the foamed thermoplastic elastic layer 122 . Preferably, the foaming treatment method is selected from one of the following: microsphere foaming, nitrogen foaming, carbon dioxide foaming and carbon dioxide supercritical foaming.

Step 3: Disposing a thermoplastic adhesive layer 126 on the second surface 122B of the foamed thermoplastic elastic layer 122 to prepare the thermoplastic composite substrate 12 . In this step, the thermoplastic adhesive layer 126 is a hot melt adhesive layer, and the material of the thermoplastic adhesive layer 126 can be thermoplastic polyurethane (TPU), thermoplastic polyester elastomer (TPEE), polyolefin-based elastomer (TPO) or aqueous paste. Furthermore, preferably, the moisture content of the thermoplastic adhesive layer 126 is less than 300 ppm.

Referring to step S22 of FIG. 2 and FIG. 3B , the textile substrate 14 is attached to the thermoplastic adhesive layer 126 of the thermoplastic composite substrate 12 . In this step, the textile substrate 14 can be a non-woven fabric or a fabric.

Referring to FIG. 6 , it shows a cross-section optical microscope observation photo of the thermoplastic artificial leather of the present invention. As shown in FIG. 6, the present invention uses the foamed thermoplastic elastic layer 122, the unfoamed thermoplastic elastic layer 124 and the thermoplastic adhesive layer 126 to make the thermoplastic composite substrate 12, and uses the textile substrate 14 to composite the thermoplastic The lamination of the substrate 12 can produce artificial leather with good abrasion resistance (stoll abrasion=3000+; test method: NIKE G12), peel strength greater than 4.0kg/cm ² and soft leather feel. In addition, the present invention can prepare artificial leather without using a solvent, and also meets the requirements of environmental protection.

FIG. 7 shows another structural schematic diagram of the thermoplastic composite substrate of the present invention. FIG. 8 shows another structural schematic diagram of the thermoplastic artificial leather of the present invention. In addition to the three-layer composite structure of the foamed thermoplastic elastic layer 122 , the unfoamed thermoplastic elastic layer 124 and the thermoplastic adhesive layer 126 shown in FIG. 1 , the thermoplastic composite substrate 12 of the present invention is shown in FIGS. 7 and 8 . In another embodiment, the thermoplastic composite substrate 12 can be a double-layer composite structure of the foamed thermoplastic elastic layer 122 and the unfoamed thermoplastic elastic layer 124 . The unfoamed thermoplastic elastic layer 124 is disposed on the first surface 122A of the foamed thermoplastic elastic layer 122 , and the textile substrate 14 can be attached to the foamed thermoplastic elastic layer of the thermoplastic composite substrate 12 122 to produce thermoplastic artificial leather 10.

FIG. 9 shows another structural schematic diagram of the thermoplastic composite substrate of the present invention. FIG. 10 shows yet another structural schematic diagram of the thermoplastic artificial leather of the present invention. In addition to the three-layer composite structure of the foamed thermoplastic elastic layer 122 , the unfoamed thermoplastic elastic layer 124 and the thermoplastic adhesive layer 126 shown in FIG. 1 , the thermoplastic composite substrate 12 of the present invention is shown in FIGS. 9 and 10 . In yet another embodiment, the thermoplastic composite substrate 12 can be a double-layer composite structure of the foamed thermoplastic elastic layer 122 and the thermoplastic adhesive layer 126 . The thermoplastic adhesive layer 126 is disposed on the second surface 122B of the foamed thermoplastic elastic layer 122 , and the textile substrate 14 can be adhered to the thermoplastic adhesive layer 126 of the thermoplastic composite substrate 12 to make thermal Plastic artificial leather 10.

The following examples are given to illustrate the present invention in detail, but it is not intended that the present invention is limited to the contents disclosed by these examples.

[Invention Example 1]

Raw material: The thermoplastic polyurethane (TPU) is used as the first raw material and the second raw material, and the thermoplastic polyurethane (TPU) is dried so that the moisture content of the thermoplastic polyurethane (TPU) is less than 300 ppm.

Temperature setting conditions: the temperature of the first raw material extruder is set to 100°C, 150°C and 185°C in sequence; the temperature of the second raw material extruder is set to 80°C, 145°C and 170°C in sequence, and the Japanese Microsphere foamed functional ester particles of Sekisui EVA base (0.5-3.5%); the temperature of the T-die film head is set to 180°C.

Thickness setting: adjust the gear pump of the first raw material and the second raw material respectively to control the thickness ratio of the unfoamed thermoplastic polyurethane layer to the foamed thermoplastic polyurethane layer to be 1:3.

After cooling with a chilling roller and forming a film, and controlling the speed of the chilling roller to be 3.5 m/min, a polyurethane composite layer with a total thickness of about 0.4 mm can be obtained, wherein the thickness of the unfoamed thermoplastic polyurethane layer is 0.1 mm, while the thickness of the foamed thermoplastic polyurethane layer is 0.3 mm.

On the surface of the above-mentioned polyurethane composite layer, water-based PU is processed by a PU dry laminating machine to make surface changes.

A 0.1mm TPU hot-melt adhesive layer is set between the polyurethane composite layer and polyester non-woven, and a roller laminating machine is used to make the polyurethane composite layer and polyester melt-blown under the condition that the surface temperature of the wheel is 120 °C Non-woven fabrics (basic weight 300g/m ² ) are laminated to obtain environmentally friendly thermoplastic polyurethane artificial leather.

[Invention Example 2]

Raw material: using thermoplastic polyurethane (TPU) as the first raw material, second raw material and third raw material, and drying the thermoplastic polyurethane (TPU), so that the moisture content of the thermoplastic polyurethane (TPU) is less than 300ppm.

Temperature setting conditions: the temperature of the first raw material extruder is set to 100°C, 150°C and 185°C in sequence; the temperature of the second raw material extruder is set to 80°C, 145°C and 170°C in sequence, and the Japanese Sekisui EVA base microsphere foaming functional ester pellets (2-4%); the temperature of the third raw material extruder is set to 80°C, 120°C and 160°C in sequence; the temperature of the T-die film head is set to 180°C.

Thickness setting: adjust the gear pump of the first raw material, the second raw material and the third raw material respectively to control the thickness ratio of the unfoamed thermoplastic polyurethane layer, the foamed thermoplastic polyurethane layer and the polyurethane hot melt adhesive layer is 1:3.5:1.5.

After cooling the quenching roll to form a film, and controlling the speed of the quenching roll to be 2.8m/min, a polyurethane composite substrate with a total thickness of about 0.6mm can be obtained, wherein the thickness of the unfoamed thermoplastic polyurethane layer is 0.1mm, The thickness of the foamed thermoplastic polyurethane layer is 0.35 mm, and the thickness of the polyurethane hot melt adhesive layer is 0.15 mm.

Surface modification of water-based PU is performed on the surface of the above-mentioned polyurethane composite substrate.

Using a roller laminating machine, under the condition that the surface temperature of the wheel is 120°C, the polyurethane composite substrate and the polyester needle-punched non-woven fabric (thickness 0.7mm) are laminated, and the environmentally friendly thermoplastic polyurethane artificial leather can be obtained. .

[Invention Example 3]

Raw material: using thermoplastic polyurethane (TPU) as the first raw material, second raw material and third raw material, and drying the thermoplastic polyurethane (TPU), so that the moisture content of the thermoplastic polyurethane (TPU) is less than 300ppm.

Temperature setting conditions: the temperature of the first raw material extruder is set to 100°C, 150°C and 185°C in sequence; the temperature of the second raw material extruder is set to 80°C, 145°C and 170°C in sequence, and a tube is used. The carbon dioxide in the supercritical state is introduced into the channel, and the carbon dioxide condition introduced at this time is 200 ° C/80 bar (bar); the temperature of the third raw material extruder is set to 80 ° C, 120 ° C and 160 ° C in sequence; T-die The temperature of the membrane head was set at 160°C, and the pressure was controlled at 50-60 bar.

Thickness setting: respectively adjust the metering pumps of the first raw material, the second raw material and the third raw material to control the thickness ratio of the unfoamed thermoplastic polyurethane layer, the foamed thermoplastic polyurethane layer and the polyurethane hot melt adhesive layer to 1:3.5 : 1.5.

After cooling the quenching roll to form a film, and controlling the speed of the quenching roll to be 2.8m/min, a polyurethane composite substrate with a total thickness of about 0.6mm can be obtained, wherein the thickness of the unfoamed thermoplastic polyurethane layer is 0.1mm, The thickness of the foamed thermoplastic polyurethane layer is 0.35 mm, and the thickness of the polyurethane hot melt adhesive layer is 0.15 mm.

On the surface of the above-mentioned polyurethane composite substrate, water-based PU is processed by a PU dry laminating machine to make surface changes.

Using a roller laminating machine, under the condition that the surface temperature of the wheel is 120°C, the polyurethane composite substrate and the polyester fabric (the warp and weft density 175,100/in) are laminated to obtain the environmentally friendly thermoplastic polyurethane artificial leather.

[Invention Example 4]

Raw material: The thermoplastic polyurethane (TPU) is used as the first raw material and the second raw material, and the thermoplastic polyurethane (TPU) is dried so that the moisture content of the thermoplastic polyurethane (TPU) is less than 300 ppm.

Temperature setting conditions: the temperature of the first raw material extruder is set to 100°C, 150°C and 185°C in sequence; the temperature of the second raw material extruder is set to 80°C, 145°C and 170°C in sequence, and the Japanese Microsphere foamed functional ester particles of Sekisui EVA base (0.5-3.5%); the temperature of the T-die film head is set to 180°C.

Thickness setting: adjust the gear pump of the first raw material and the second raw material respectively to control the thickness ratio of the unfoamed thermoplastic polyurethane layer to the foamed thermoplastic polyurethane layer to be 1:3.

After cooling the quenching roll to form a film, and controlling the speed of the quenching roll to be 3.5m/min, a polyurethane composite layer with a total thickness of about 0.4mm can be obtained, wherein the thickness of the unfoamed thermoplastic polyurethane layer is 0.1mm, and The thickness of the foamed thermoplastic polyurethane layer was 0.3 mm.

For the above-mentioned polyurethane composite layer, a PU dry laminating machine was used for the surface change of the PU surface.

Using water-based paste between the polyurethane composite layer and the polyester fabric (weft and weft density 175,100/in), in a dry laminating machine, the polyurethane composite layer and the polyester fabric are laminated, and then the environmentally friendly thermoplastic polyurethane artificial leather.

The present invention also includes:

1. A thermoplastic artificial leather comprising:

Thermoplastic composite substrate, this substrate has:

The foamed thermoplastic elastic layer has a first surface, a second surface and a plurality of foamed structures, the second surface is opposite to the first surface;

an unfoamed thermoplastic elastic layer disposed on the first surface of the foamed thermoplastic elastic layer; and

a thermoplastic adhesive layer disposed on the second surface of the foamed thermoplastic elastic layer; and

A textile substrate is attached to the thermoplastic adhesive layer of the thermoplastic composite substrate.

2. Thermoplastic artificial leather according to item 1,

The material of the foamed thermoplastic elastic layer is thermoplastic polyurethane (TPU), thermoplastic polyester elastomer (TPEE) or polyolefin elastomer (TPO).

3. Thermoplastic artificial leather according to item 1,

Wherein the size of the foamed structures of the foamed thermoplastic elastic layer is 20 to 300 microns.

4. Thermoplastic artificial leather according to item 1,

Wherein the foamed thermoplastic elastic layer has a foaming density reduction rate of 40 to 90%, and a Shore hardness of 50A to 85A.

5. Thermoplastic artificial leather according to item 1,

The material of the unfoamed thermoplastic elastic layer is thermoplastic polyurethane (TPU), thermoplastic polyester elastomer (TPEE) or polyolefin-based elastomer (TPO).

6. Thermoplastic artificial leather according to item 1,

The thickness ratio of the unfoamed thermoplastic elastic layer to the foamed thermoplastic elastic layer is 95:5 to 5:95.

7. Thermoplastic artificial leather according to item 1,

The Shore hardness of the unfoamed thermoplastic elastic layer is 60A to 80A.

8. Thermoplastic artificial leather according to item 1,

The thermoplastic adhesive layer is made of thermoplastic polyurethane (TPU) or water-based paste.

9. Thermoplastic artificial leather according to item 1,

Wherein the textile substrate is non-woven fabric or fabric.

10. A manufacturing method of thermoplastic artificial leather, comprising the following steps:

(a) preparing a thermoplastic composite substrate, the thermoplastic composite substrate includes a foamed thermoplastic elastic layer, an unfoamed thermoplastic elastic layer and a thermoplastic adhesive layer, the foamed thermoplastic elastic layer has a first surface, a second Two surfaces and a plurality of foamed structures, the second surface is opposite to the first surface, the unfoamed thermoplastic elastic layer is disposed on the first surface of the foamed thermoplastic elastic layer, and the thermoplastic adhesive layer is disposed on the first surface the second surface of the foamed thermoplastic elastic layer; and

(b) attaching a textile substrate to the thermoplastic adhesive layer of the thermoplastic composite substrate.

11. A method for producing a thermoplastic artificial leather according to item 10,

Wherein step (a) prepares the method for this thermoplastic composite base material comprises:

(a1) providing a first raw material, a second raw material and a third raw material, the first raw material is used to make the unfoamed thermoplastic elastic layer, the second raw material is used to make the foamed thermoplastic elastic layer, the third raw material raw materials for making the thermoplastic adhesive layer; and

(a2) After the first raw material, the second raw material and the third raw material are melted using an extrusion device, the thermoplastic composite substrate is co-extruded.

12. A method for producing a thermoplastic artificial leather according to item 11,

Wherein the first raw material, the second raw material and the third raw material in step (a1) are thermoplastic polyurethane (TPU), thermoplastic polyester elastomer (TPEE) or polyolefin elastomer (TPO).

13. A method for producing a thermoplastic artificial leather according to item 11,

The melting point of the first raw material in step (a1) is 140 to 165°C, the melting point of the second raw material is 135 to 150°C, and the melting point of the third raw material is 90 to 133°C.

14. A method for producing a thermoplastic artificial leather according to item 11,

Wherein step (a2) also includes foaming treatment of the second raw material.

15. The manufacturing method of thermoplastic artificial leather according to item 14,

Wherein the foaming treatment method is selected from one of the following: microsphere foaming, nitrogen foaming, carbon dioxide foaming and carbon dioxide supercritical foaming.

16. The manufacturing method of thermoplastic artificial leather according to item 10,

Wherein step (a) prepares the method for this thermoplastic composite substrate comprising:

(a1) providing a first raw material and a second raw material, the first raw material is used to make the unfoamed thermoplastic elastic layer, and the second raw material is used to make the foamed thermoplastic elastic layer;

(a2) after the first raw material and the second raw material are melted by an extrusion device, the unfoamed thermoplastic elastic layer and the foamed thermoplastic elastic layer are co-extruded; and

(a3) disposing a thermoplastic adhesive layer on the second surface of the foamed thermoplastic elastic layer to prepare the thermoplastic composite substrate.

17. The manufacturing method of thermoplastic artificial leather according to item 16,

Wherein the first raw material and the second raw material in step (a1) are thermoplastic polyurethane (TPU), thermoplastic polyester elastomer (TPEE) or polyolefin elastomer (TPO).

18. The manufacturing method of thermoplastic artificial leather according to item 16,

The melting point of the first raw material in step (a1) is 140 to 165°C and the melting point of the second raw material is 135 to 150°C.

19. The manufacturing method of thermoplastic artificial leather according to item 16,

Wherein step (a2) further comprises foaming treatment of the second raw material.

20. The manufacturing method of thermoplastic artificial leather according to item 19,

Wherein the foaming treatment method is selected from one of the following: microsphere foaming, nitrogen foaming, carbon dioxide foaming and carbon dioxide supercritical foaming.

21. The manufacturing method of thermoplastic artificial leather according to item 16,

The material of the thermoplastic adhesive layer in step (a3) is thermoplastic polyurethane (TPU), thermoplastic polyester elastomer (TPEE), polyolefin-based elastomer (TPO) or water-based paste.

22. The manufacturing method of thermoplastic artificial leather according to item 10,

Wherein the textile substrate of step (b) is a non-woven fabric or a fabric.

The above-mentioned embodiments are only to illustrate the principles and effects of the present invention, but not to limit the present invention. Therefore, those skilled in the art can modify and change the above-mentioned embodiments without departing from the spirit of the present invention. The scope of the claimed protection of the present invention should be determined by the scope of the appended claims.

Claims (22)

1. A thermoplastic artificial leather comprising:

a thermoplastic composite substrate, the substrate comprising:

the foaming thermoplastic elastic layer is provided with a first surface, a second surface and a plurality of foaming structures, wherein the second surface is opposite to the first surface, and the reduction rate of the foaming density of the foaming thermoplastic elastic layer is 40-90%;

the unfoamed thermoplastic elastic layer is arranged on the first surface of the foamed thermoplastic elastic layer; and

the thermoplastic adhesive layer is arranged on the second surface of the foaming thermoplastic elastic layer, wherein the thickness of the thermoplastic adhesive layer is larger than that of the unfoamed thermoplastic elastic layer; and

the textile substrate is attached to the thermoplastic adhesive layer of the thermoplastic composite substrate.

2. The thermoplastic artificial leather according to claim 1,

wherein the material of the foaming thermoplastic elastic layer is Thermoplastic Polyurethane (TPU), thermoplastic polyester elastomer (TPEE) or polyolefin elastomer (TPO).

3. The thermoplastic artificial leather according to claim 1,

wherein the foamed structures of the foamed thermoplastic elastic layer have a size of 20 to 300 μm.

4. The thermoplastic artificial leather according to claim 1,

wherein the foamed thermoplastic elastic layer has a reduction rate of foamed density of 40 to 90% and a Shore hardness of 50A to 85A.

5. The thermoplastic artificial leather according to claim 1,

wherein the unfoamed thermoplastic elastic layer is made of Thermoplastic Polyurethane (TPU), thermoplastic polyester elastomer (TPEE) or polyolefin elastomer (TPO).

6. The thermoplastic artificial leather according to claim 1,

wherein the thickness ratio of the unfoamed thermoplastic elastic layer to the foamed thermoplastic elastic layer is 95: 5 to 5: 95.

7. the thermoplastic artificial leather according to claim 1,

wherein the Shore hardness of the unfoamed thermoplastic elastic layer is 60A to 80A.

8. The thermoplastic artificial leather according to claim 1,

wherein the material of the thermoplastic adhesive layer is Thermoplastic Polyurethane (TPU) or aqueous paste.

9. The thermoplastic artificial leather according to claim 1,

wherein the textile substrate is a non-woven fabric or a woven fabric.

10. A manufacturing method of thermoplastic artificial leather comprises the following steps:

(a) preparing a thermoplastic composite substrate, wherein the thermoplastic composite substrate comprises a foaming thermoplastic elastic layer, an unfoamed thermoplastic elastic layer and a thermoplastic adhesive layer, the foaming thermoplastic elastic layer is provided with a first surface, a second surface and a plurality of foaming structures, the second surface is opposite to the first surface, the foaming density reduction rate of the foaming thermoplastic elastic layer is 40-90%, the unfoamed thermoplastic elastic layer is arranged on the first surface of the foaming thermoplastic elastic layer, the thermoplastic adhesive layer is arranged on the second surface of the foaming thermoplastic elastic layer, and the thickness of the thermoplastic adhesive layer is greater than that of the unfoamed thermoplastic elastic layer; and

(b) and adhering the textile substrate to the thermoplastic adhesive layer of the thermoplastic composite substrate.

11. The method for manufacturing thermoplastic artificial leather according to claim 10,

wherein the method for preparing the thermoplastic composite substrate in the step (a) comprises the following steps:

(a1) providing a first raw material, a second raw material and a third raw material, wherein the first raw material is used for manufacturing the unfoamed thermoplastic elastic layer, the second raw material is used for manufacturing the foamed thermoplastic elastic layer, and the third raw material is used for manufacturing the thermoplastic adhesive layer; and

(a2) and melting the first raw material, the second raw material and the third raw material by using an extrusion device, and then co-extruding the thermoplastic composite base material.

12. The method of manufacturing thermoplastic artificial leather according to claim 11,

wherein the first raw material, the second raw material and the third raw material of step (a1) are Thermoplastic Polyurethane (TPU), thermoplastic polyester elastomer (TPEE) or polyolefin elastomer (TPO).

13. The method of manufacturing thermoplastic artificial leather according to claim 11,

wherein the melting point of the first raw material of step (a1) is 140 to 165 ℃, the melting point of the second raw material is 135 to 150 ℃ and the melting point of the third raw material is 90 to 133 ℃.

14. The method of manufacturing thermoplastic artificial leather according to claim 11,

wherein step (a2) further comprises subjecting the second feedstock to a foaming process.

15. The method for manufacturing thermoplastic artificial leather according to claim 14,

wherein the foaming treatment method is selected from one of the following methods: microsphere foaming, nitrogen foaming, carbon dioxide foaming and carbon dioxide supercritical foaming.

16. The method for manufacturing thermoplastic artificial leather according to claim 10,

wherein the method for preparing the thermoplastic composite substrate in the step (a) comprises the following steps:

(a1) providing a first raw material and a second raw material, wherein the first raw material is used for manufacturing the unfoamed thermoplastic elastic layer, and the second raw material is used for manufacturing the foamed thermoplastic elastic layer;

(a2) co-extruding the unfoamed thermoplastic elastic layer and the foamed thermoplastic elastic layer after melting the first raw material and the second raw material by using an extruding device; and

(a3) and arranging a thermoplastic adhesive layer on the second surface of the foaming thermoplastic elastic layer to prepare the thermoplastic composite base material.

17. The method for manufacturing thermoplastic artificial leather according to claim 16,

wherein the first raw material and the second raw material of step (a1) are Thermoplastic Polyurethane (TPU), thermoplastic polyester elastomer (TPEE) or polyolefin elastomer (TPO).

18. The method for manufacturing thermoplastic artificial leather according to claim 16,

wherein the melting point of the first material of step (a1) is 140 to 165 ℃ and the melting point of the second material is 135 to 150 ℃.

19. The method for manufacturing thermoplastic artificial leather according to claim 16,

wherein step (a2) further comprises subjecting the second material to a foaming process.

20. The method of manufacturing thermoplastic artificial leather according to claim 19,

wherein the foaming treatment method is selected from one of the following methods: microsphere foaming, nitrogen foaming, carbon dioxide foaming and carbon dioxide supercritical foaming.

21. The method for manufacturing thermoplastic artificial leather according to claim 16,

wherein the thermoplastic adhesive layer of step (a3) is made of Thermoplastic Polyurethane (TPU), thermoplastic polyester elastomer (TPEE), polyolefin elastomer (TPO) or aqueous paste.

22. The method for manufacturing thermoplastic artificial leather according to claim 10,

wherein the textile substrate of step (b) is a nonwoven or fabric.

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