CN114603966A - Thermoplastic artificial leather, manufacturing method thereof and thermoplastic composite base material - Google Patents
Thermoplastic artificial leather, manufacturing method thereof and thermoplastic composite base material Download PDFInfo
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- CN114603966A CN114603966A CN202210160167.9A CN202210160167A CN114603966A CN 114603966 A CN114603966 A CN 114603966A CN 202210160167 A CN202210160167 A CN 202210160167A CN 114603966 A CN114603966 A CN 114603966A
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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
The present application is a divisional application of the invention patent application having an application date of 2015, 14/04, and an application number of 201510173892.X, entitled "thermoplastic artificial leather, method for producing the same, and thermoplastic composite substrate".
[ technical field ] A
The invention relates to artificial leather and a manufacturing method thereof, in particular to thermoplastic artificial leather and a manufacturing method thereof and a thermoplastic composite base material.
[ background of the invention ]
In the conventional artificial leather manufacturing process, both dry process and wet process use organic solvent (such as DMF), although the organic solvent can be recycled, the construction cost of the recycling equipment is quite high, and the recycling rate of 100% is quite difficult, so that zero detection of the organic solvent is difficult to realize, and the requirement of environmental protection is not met. In addition, the hand feeling and abrasion resistance of the artificial leather manufactured by the conventional process (ball abrasion 1500-; test method: NIKE G12) are generally not good.
The conventional artificial leather and the manufacturing method thereof are analyzed as the following prior art patent documents.
1.TW I409375
The method comprises the following steps: the leather is prepared by adhering thermoplastic film to the fibers with special-shaped cross sections and then processing the fibers.
The disadvantages are as follows: no foaming structure, too hard leather and poor hand feeling.
2.TW I290568
The method comprises the following steps: the surface is secondarily processed using a thermoplastic film to cover the foamed layer to produce leather.
The disadvantages are as follows: the efficiency of the secondary surface layer processing is not good.
3.TW 442392
The method comprises the following steps: the leather is prepared by laminating the thermoplastic film on the base cloth.
The disadvantages are as follows: no foaming structure, too hard leather and poor hand feeling.
Based on the above analysis, there is a need to provide a novel and advanced thermoplastic artificial leather, a manufacturing method thereof and a thermoplastic composite substrate, so as to solve the above-mentioned disadvantages of the prior art.
[ summary of the invention ]
The invention provides thermoplastic artificial leather, which comprises a thermoplastic composite substrate and a textile substrate. The thermoplastic composite substrate comprises a foamed 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, 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 thermal plastic adhesive layer is arranged on the second surface of the foaming thermal plastic elastic layer. The textile substrate is attached to the thermoplastic adhesive layer of the thermoplastic composite substrate.
The invention also provides a manufacturing method of the thermoplastic artificial leather, which comprises the following steps: preparing a thermoplastic composite base material, wherein the thermoplastic composite base material 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 unfoamed thermoplastic elastic layer is arranged on the first surface of the foaming thermoplastic elastic layer, and the thermoplastic adhesive layer is arranged on the second surface of the foaming thermoplastic elastic layer; and the thermoplastic adhesive layer is adhered to the textile substrate on the thermoplastic composite substrate.
The invention also provides a thermoplastic composite substrate, which comprises a foamed 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, 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 thermal plastic adhesive layer is arranged on the second surface of the foaming thermal plastic elastic layer.
The invention also provides a thermoplastic composite base material, which comprises a foamed thermoplastic elastic layer and an unfoamed 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 invention also provides a thermoplastic composite base material, which comprises a foaming 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, wherein the second surface is opposite to the first surface. The thermoplastic adhesive layer is arranged on the second surface of the foaming thermoplastic elastic layer.
The invention can respectively use a three-layer composite structure of a foaming thermoplastic elastic layer, an unfoamed thermoplastic elastic layer and a thermoplastic adhesive layer, a double-layer composite structure of the foaming thermoplastic elastic layer and the unfoamed thermoplastic elastic layer or a double-layer composite structure of the foaming thermoplastic elastic layer and the thermoplastic adhesive layer to prepare a thermoplastic composite base material, and the thermoplastic composite base material is bonded with a textile base material to prepare the thermoplastic composite base material with good wear resistance (3000 +; test method: NIKE G12) and peel strength of more than 4.0kg/cm2And artificial leather with soft leather hand feeling. In addition, the invention can prepare the artificial leather without using a solvent, and meets the requirement of environmental protection.
In order to make the technical means of the present invention more clearly understood, the present invention may be implemented in the form of the following description, and in order to make the objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
[ description of the drawings ]
FIG. 1 shows a schematic structural view of a thermoplastic artificial leather of the present invention;
FIG. 2 is a flow chart showing a method for manufacturing the thermoplastic artificial leather of the present invention;
FIGS. 3A to 3B are schematic views illustrating a method for manufacturing thermoplastic artificial leather according to the present invention;
FIG. 4 is a schematic view of a process for preparing a thermoplastic composite substrate according to the present invention;
FIG. 5 is a schematic view of another process for preparing a thermoplastic composite substrate according to the present invention;
FIG. 6 shows an optical microscope observation photograph of a cross section of the thermoplastic artificial leather of the present invention;
FIG. 7 is a schematic view of another embodiment of the thermoplastic composite substrate of the present invention;
FIG. 8 is a schematic view showing another structure of the thermoplastic artificial leather of the present invention;
FIG. 9 is a schematic view of another embodiment of the thermoplastic composite substrate of the present invention; and
FIG. 10 is a schematic view showing still another structure of the thermoplastic artificial leather of the present invention.
[ description of reference ]
10 thermoplastic artificial leather
12 thermoplastic composite base material
122 foamed thermoplastic elastic layer
122A first surface
122B second surface
122F foamed structure
124 unfoamed thermoplastic elastic layer
126 thermoplastic adhesive layer
14 textile substrate
31 first raw material
32 second raw material
33 third raw material
40 extrusion device
S21-S22 steps
[ detailed description ] embodiments
Referring to fig. 1, there is shown a schematic structural view 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 elastomer layer 122, an unfoamed thermoplastic elastomer 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 the present embodiment, the material of the foamed thermoplastic elastic layer 122 may be Thermoplastic Polyurethane (TPU), thermoplastic polyester elastomer (TPEE) or polyolefin elastomer (TPO), and preferably, 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, it is preferable that the foamed density reduction rate (density after foaming/density before foaming) of the foamed thermoplastic elastic layer 122 should be 40 to 90%, and the size of the foamed structures 122F should be 20 to 300 μm.
The unfoamed thermoplastic elastic layer 124 is disposed on the first surface 122A of the foamed thermoplastic elastic layer 122. In the present 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 shore hardness of the unfoamed thermoplastic elastic layer 124 is 60A to 80A.
In addition, in order to increase the plumpness and leather feeling of the thermoplastic artificial leather 10, it is preferable that the ratio of the thickness of the unfoamed thermoplastic elastic layer 124 to the thickness of 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 elastomer (TPO), or aqueous paste. In addition, if TPU or TPEE or TPO is used for the thermoplastic adhesive layer, it is preferable that the shore hardness of the thermoplastic adhesive layer 126 is 60A to 90A.
The textile substrate 14 is adhered to the thermoplastic adhesive layer 126 of the thermoplastic composite substrate 12. In this embodiment, the textile substrate 14 may be a non-woven fabric or a woven fabric.
FIG. 2 shows a flow chart of the manufacturing method of the thermoplastic artificial leather of the present invention. FIGS. 3A to 3B are schematic views showing a method for manufacturing thermoplastic artificial leather according to 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, wherein 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, a schematic process diagram of preparing a thermoplastic composite substrate according to the present invention is shown. In this embodiment, the method of preparing the thermoplastic composite substrate 12 includes:
step 1: providing a first material 31, a second material 32 and a third material 33, wherein the first material 31 is used to make the unfoamed thermoplastic elastomer layer 124, the second material 32 is used to make the foamed thermoplastic elastomer layer 122, and the third material 33 is used to make 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 ℃, the melting point of the second raw material 32 is 135 to 150 ℃, and the melting point of the third raw material 33 is 90 to 133 ℃. In addition, the first raw material 31, the second raw material 32, and the third raw material 33 may be dried so that the water content of the first raw material 31, the second raw material 32, and the third raw material 33 are all less than 300 ppm.
Step 2: the first raw material 31, the second raw material 32, and the third raw material 33 are melted by an extrusion device 40, and then the thermoplastic composite base material 12 is co-extruded. In this step, the second material 32 may be foamed, so that the foamed thermoplastic elastic layer 122 can be formed from the second material 32. 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, another process for preparing the thermoplastic composite substrate according to the present invention is shown. In another embodiment, a method of making the thermoplastic composite substrate 12 may comprise:
step 1: providing a first material 31 and a second material 32, wherein the first material 31 is used for manufacturing the unfoamed thermoplastic elastomer layer 124, and the second material 32 is used for manufacturing the foamed thermoplastic elastomer 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 deg.c and the melting point of the second raw material 32 is 135 to 150 deg.c. In addition, in order to make the water content of the first raw material 31 and the second raw material 32 less than 300ppm, 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 coextruded. In this step, the second material 32 may be foamed, so that the foamed thermoplastic elastic layer 122 can be formed from the second material 32. Preferably, the foaming treatment method is selected from one of the following: microsphere foaming, nitrogen foaming, carbon dioxide foaming and carbon dioxide supercritical foaming.
And step 3: a thermoplastic adhesive layer 126 is disposed on the second surface 122B of the foamed thermoplastic elastic layer 122 to obtain 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 elastomer (TPO), or aqueous paste. Further, the water content of the thermoplastic adhesive layer 126 is preferably less than 300 ppm.
Referring to step S22 of fig. 2 and fig. 3B, a textile substrate 14 is attached to the thermoplastic adhesive layer 126 of the thermoplastic composite substrate 12. In this step, the textile substrate 14 may be a nonwoven fabric or a woven fabric.
Referring to fig. 6, it shows a cross-sectional optical microscope observation photograph of the thermoplastic artificial leather of the present invention. As shown in FIG. 6, the thermoplastic composite substrate 12 is made of the foamed thermoplastic elastic layer 122, the unfoamed thermoplastic elastic layer 124 and the thermoplastic adhesive layer 126, and the textile substrate 14 is bonded to the thermoplastic composite substrate 12, so that the thermoplastic composite substrate 12 with good wear resistance (3000 +; test method: NIKE G12) and peel strength of more than 4.0kg/cm can be obtained2And artificial leather with soft leather hand feeling. In addition, the invention can prepare the artificial leather without using a solvent, and meets the requirement of environmental protection.
FIG. 7 is a schematic view of another structure of the thermoplastic composite substrate of the present invention. FIG. 8 is another schematic structural view 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, as shown in fig. 7 and 8, in another embodiment of the thermoplastic composite substrate 12 of the present invention, the foamed thermoplastic elastic layer 122 and the unfoamed thermoplastic elastic layer 124 can be a two-layer composite structure. 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 122 of the thermoplastic composite substrate 12 to obtain the thermoplastic artificial leather 10.
FIG. 9 is a schematic view of another embodiment of the thermoplastic composite substrate of the present invention. FIG. 10 is a schematic view showing still another structure 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, as shown in fig. 9 and 10, in another embodiment of the thermoplastic composite substrate 12 of the present invention, the foamed thermoplastic elastic layer 122 and the thermoplastic adhesive layer 126 can be a two-layer composite structure. 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 attached to the thermoplastic adhesive layer 126 of the thermoplastic composite substrate 12 to obtain the thermoplastic artificial leather 10.
The present invention is described in detail by the following examples, but it is not intended that the invention be limited to the disclosure of these examples.
[ inventive example 1]
Raw materials: thermoplastic Polyurethane (TPU) is used as a first raw material and a second raw material, and drying treatment is carried out on the Thermoplastic Polyurethane (TPU) so as to enable the water content of the Thermoplastic Polyurethane (TPU) to be less than 300 ppm.
Temperature setting conditions: the first raw material extruder temperature was set to 100 ℃, 150 ℃ and 185 ℃ in this order; setting the temperature of the second raw material extruder to be 80 ℃, 145 ℃ and 170 ℃ in sequence, and adding microsphere foaming functional ester particles (0.5-3.5%) of Japanese ponding EVA base; the T-die head temperature was set to 180 ℃.
Thickness setting: respectively adjusting a metering pump (Gear pump) of the first raw material and a metering pump (Gear pump) of the second raw material to control the thickness ratio of the unfoamed thermoplastic polyurethane layer to the foamed thermoplastic polyurethane layer to be 1: 3.
cooling by a chill roll (Chilling Roller) to form a film, and controlling the speed of the chill roll to be 3.5m/min, thus obtaining the polyurethane composite layer with the total thickness of about 0.4mm, wherein the thickness of the unfoamed thermoplastic polyurethane layer is 0.1mm, and the thickness of the foamed thermoplastic polyurethane layer is 0.3 mm.
And (3) processing the water-based PU on the surface of the polyurethane composite layer by a PU dry laminating machine to change the surface.
A 0.1mm TPU hot melt adhesive layer is arranged between the polyurethane composite layer and the polyester non-woven fabric, and the polyurethane composite layer and the polyester melt-blown non-woven fabric (the basis weight is 300 g/m) are enabled to be bonded by a roller bonding machine under the condition that the surface temperature of a wheel is 120 DEG C2) And (5) laminating to obtain the environment-friendly thermoplastic polyurethane artificial leather.
[ inventive example 2]
Raw materials: thermoplastic Polyurethane (TPU) is used as a first raw material, a second raw material and a third raw material, and drying treatment is carried out on the Thermoplastic Polyurethane (TPU) so that the water content of the Thermoplastic Polyurethane (TPU) is less than 300 ppm.
Temperature setting conditions: the first raw material extruder temperature was set to 100 ℃, 150 ℃ and 185 ℃ in this order; setting the temperature of a second raw material extruder to be 80 ℃, 145 ℃ and 170 ℃ in sequence, and adding 2-4% of microsphere foaming functional ester particles of Japanese ponding EVA base; setting the temperature of the third raw material extruder to be 80 ℃, 120 ℃ and 160 ℃ in sequence; the T-die head temperature was set to 180 ℃.
Thickness setting: respectively adjusting the metering pumps (Gear 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 to the foamed thermoplastic polyurethane layer to the polyurethane hot melt adhesive layer to be 1: 3.5: 1.5.
cooling the mixture by a quenching roller to form a film, and controlling the speed of the quenching roller to be 2.8m/min to obtain the polyurethane composite base material with the total thickness of about 0.6mm, wherein the thickness of the unfoamed thermoplastic polyurethane layer is 0.1mm, the thickness of the foamed thermoplastic polyurethane layer is 0.35mm, and the thickness of the polyurethane hot melt adhesive layer is 0.15 mm.
And (3) carrying out surface change on the waterborne PU processed on the surface of the polyurethane composite substrate.
The polyurethane composite base material is attached to a polyester needle-punched non-woven fabric (with the thickness of 0.7mm) by using a roller attaching machine under the condition that the surface temperature of a wheel is 120 ℃, and the environment-friendly thermoplastic polyurethane artificial leather can be prepared.
[ inventive example 3]
Raw materials: thermoplastic Polyurethane (TPU) is used as a first raw material, a second raw material and a third raw material, and drying treatment is carried out on the Thermoplastic Polyurethane (TPU) so that the water content of the Thermoplastic Polyurethane (TPU) is less than 300 ppm.
Temperature setting conditions: the first raw material extruder temperature was set to 100 ℃, 150 ℃ and 185 ℃ in this order; setting the temperature of the second raw material extruder to 80 ℃, 145 ℃ and 170 ℃ in sequence, and introducing carbon dioxide in a supercritical state by using a pipeline, wherein the introduced carbon dioxide is at the condition of 200 ℃/80 bar (bar); setting the temperature of the third raw material extruder to be 80 ℃, 120 ℃ and 160 ℃ in sequence; the temperature of the T-die membrane head is set to be 160 ℃, and the pressure is controlled to be 50-60 bar.
Thickness setting: the metering pump of first raw materials, second raw materials and third raw materials is adjusted respectively to the thickness ratio of control not foaming thermoplastic polyurethane layer, foaming thermoplastic polyurethane layer and polyurethane hot melt adhesive layer is 1: 3.5: 1.5.
cooling the mixture by a quenching roller to form a film, and controlling the speed of the quenching roller to be 2.8m/min to obtain the polyurethane composite base material with the total thickness of about 0.6mm, wherein the thickness of the unfoamed thermoplastic polyurethane layer is 0.1mm, the thickness of the foamed thermoplastic polyurethane layer is 0.35mm, and the thickness of the polyurethane hot melt adhesive layer is 0.15 mm.
And (3) carrying out surface change on the polyurethane composite base material on the surface by processing the waterborne PU through a PU dry laminating machine.
And (3) laminating the polyurethane composite base material and the polyester fabric (with the warp and weft density of 175,100/in) by using a roller laminating machine under the condition that the surface temperature of the wheel is 120 ℃, so as to obtain the environment-friendly thermoplastic polyurethane artificial leather.
[ inventive example 4]
Raw materials: thermoplastic Polyurethane (TPU) is used as a first raw material and a second raw material, and drying treatment is carried out on the Thermoplastic Polyurethane (TPU) so as to enable the water content of the Thermoplastic Polyurethane (TPU) to be less than 300 ppm.
Temperature setting conditions: the first raw material extruder temperature was set to 100 ℃, 150 ℃ and 185 ℃ in this order; setting the temperature of the second raw material extruder to be 80 ℃, 145 ℃ and 170 ℃ in sequence, and adding microsphere foaming functional ester particles (0.5-3.5%) of Japanese ponding EVA base; the T-die head temperature was set to 180 ℃.
Thickness setting: respectively adjusting a metering pump (Gear pump) of the first raw material and a metering pump (Gear pump) of the second raw material to control the thickness ratio of the unfoamed thermoplastic polyurethane layer to the foamed thermoplastic polyurethane layer to be 1: 3.
cooling the mixture by a quenching roller to form a film, and controlling the speed of the quenching roller to be 3.5m/min to obtain the polyurethane composite layer with the total thickness of about 0.4mm, wherein the thickness of the unfoamed thermoplastic polyurethane layer is 0.1mm, and the thickness of the foamed thermoplastic polyurethane layer is 0.3 mm.
The surface of the polyurethane composite layer is changed by a PU dry laminating machine.
And (3) laminating the polyurethane composite layer and the polyester fabric by using an aqueous paste between the polyurethane composite layer and the polyester fabric (the warp and weft density is 175,100/in) in a dry laminating machine to obtain the environment-friendly thermoplastic polyurethane artificial leather.
The invention also includes:
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;
the unfoamed thermoplastic elastic layer is arranged on the first surface of the foamed thermoplastic elastic layer; and
the thermal plasticity adhesive layer is arranged on the second surface of the foaming thermal plasticity 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 the above item 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 the above item 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 the above item 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 the above item 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 the above item 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 the above item 1,
wherein the Shore hardness of the unfoamed thermoplastic elastomer layer is 60A to 80A.
8. The thermoplastic artificial leather according to the above item 1,
wherein the material of the thermoplastic adhesive layer is Thermoplastic Polyurethane (TPU) or aqueous paste.
9. The thermoplastic artificial leather according to the above item 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 base material, wherein the thermoplastic composite base material 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 unfoamed thermoplastic elastic layer is arranged on the first surface of the foaming thermoplastic elastic layer, and the thermoplastic adhesive layer is arranged on the second surface of the foaming thermoplastic elastic layer; and
(b) and adhering the textile substrate to the thermoplastic adhesive layer of the thermoplastic composite substrate.
11. The method of producing a thermoplastic artificial leather according to item 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 producing a thermoplastic artificial leather according to item 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 producing a thermoplastic artificial leather according to item 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 producing a thermoplastic artificial leather according to item 11,
wherein step (a2) further comprises subjecting the second feedstock to a foaming process.
15. The method of producing a thermoplastic artificial leather according to item 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 of producing a thermoplastic artificial leather according to item 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 obtain the thermoplastic composite base material.
17. The method of producing a thermoplastic artificial leather according to item 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 of producing a thermoplastic artificial leather according to item 16,
wherein the melting point of the first raw material of step (a1) is 140 to 165 ℃ and the melting point of the second raw material is 135 to 150 ℃.
19. The method of producing a thermoplastic artificial leather according to item 16,
wherein step (a2) further comprises subjecting the second raw material to a foaming treatment.
20. The method of producing a thermoplastic artificial leather according to item 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 of producing a thermoplastic artificial leather according to item 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 of producing a thermoplastic artificial leather according to item 10,
wherein the textile substrate of step (b) is a nonwoven or fabric.
The above embodiments are merely illustrative of the principles and effects of the present invention, and not restrictive, and therefore modifications and variations can be made by those skilled in the art without departing from the spirit of the present invention. The scope of the invention should be determined from the following 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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| CN108867097A (en) * | 2018-08-21 | 2018-11-23 | 林俊谚 | A kind of thermoplasticity rtificial leather and preparation method thereof |
| CN110857532B (en) * | 2018-08-22 | 2022-07-01 | 三芳化学工业股份有限公司 | Environment-friendly artificial leather and manufacturing method thereof |
| CN110857534B (en) * | 2018-08-22 | 2022-05-06 | 三芳化学工业股份有限公司 | Artificial leather and method for producing same |
| CN110757811A (en) * | 2019-10-29 | 2020-02-07 | 上海允泉新材料科技有限公司 | Sportswear composition and method for producing the same |
| TWI711740B (en) * | 2020-01-22 | 2020-12-01 | 三芳化學工業股份有限公司 | Artificial leather and manufacturing method thereof |
| US20210222359A1 (en) * | 2020-01-22 | 2021-07-22 | San Fang Chemical Industry Co., Ltd. | Leather material and manufacturing method thereof |
| TWI735379B (en) * | 2020-01-22 | 2021-08-01 | 三芳化學工業股份有限公司 | Manufacturing method of artificial leather |
| TWI737272B (en) * | 2020-01-22 | 2021-08-21 | 三芳化學工業股份有限公司 | Leather material and manufacturing method thereof |
| CN113201941A (en) * | 2020-01-31 | 2021-08-03 | 三芳化学工业股份有限公司 | Artificial leather and its making method |
| TWI765507B (en) * | 2020-12-31 | 2022-05-21 | 三芳化學工業股份有限公司 | Artificial leather and manufacturing method thereof |
| CN115556445A (en) * | 2021-07-01 | 2023-01-03 | 三芳化学工业股份有限公司 | Composite thermoplastic film and manufacturing method thereof |
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