KR20210029084A - Synthetic leather - Google Patents

Abstract

Disclosed is an artificial leather comprising: a fiber base layer; a first thermoplastic polyolefin elastomer (TPO) layer laminated on the fiber base layer; a first primer layer laminated on the first TPO layer; a printed layer laminated on the first primer layer; and a second TPO layer laminated on the printed layer. The present invention has the effect of providing the artificial leather excellent in restoration properties and stain resistance.

Description

Artificial leather {SYNTHETIC LEATHER}

It relates to artificial leather, and more particularly, a fiber base layer; A first TPO layer laminated on the fiber base layer; A primer layer stacked on the first TPO layer; A printing layer laminated on the primer layer; And a second TPO layer laminated on the printed layer. It relates to artificial leather, including.

In general, natural leather is widely used in products such as shoes, bags, wallets, various pouches, sofas, and clothing, but its resources are limited, so it does not fully meet the demand, as well as various environmental issues and animal protection movements initiated in Europe and other places. The supply and demand is gradually decreasing due to the spread of energy. Therefore, artificial leather with various patterns on its surface is widely used as a substitute.

Synthetic leather is usually manufactured by coating a thin fabric, knitted or nonwoven fabric with a synthetic resin such as polyurethane (PU) or polyvinyl chloride (PVC). In addition, it is widely used as a material for making bags and clothes.

However, PVC is always exposed to halogen gas, phthalate, and dioxin, and PU is also not free from hydrogen cyanide, DMF, formaldehyde, and MEK. In particular, PVC artificial leather generates hydrogen chloride gas during a fire, which is harmful to the human body, and also generates a lot of volatile organic compounds (VOCs), which is not environmentally friendly.

An object of the present invention is to provide an eco-friendly and recyclable artificial leather.

Another object of the present invention is to provide a lightweight artificial leather.

Another object of the present invention is to provide an artificial leather excellent in abrasion resistance, scratch resistance, bending resistance, resilience and stain resistance.

1. According to one aspect, artificial leather is provided. The artificial leather is a fiber base layer; A first thermoplastic polyolefin elastomer (TPO) layer laminated on the fiber base layer; A first primer layer stacked on the first TPO layer; A printing layer laminated on the first primer layer; And a second TPO layer laminated on the printed layer. It may include.

2. In 1 above, the second TPO layer may have an abrasion strength of 40,000 or more times measured under an 800gr load condition according to the Martindale method according to KS K ISO 12947-2.

3. In 1 or 2 above, the first TPO layer and the first primer layer may be in direct contact, and the first primer layer and the printing layer may directly contact each other.

4. In any one of the above 1 to 3, it may further include a first adhesive layer between the fiber base layer and the first TPO layer.

5. In 4 above, the fibrous base layer and the first adhesive layer may directly contact each other, and the first adhesive layer and the first TPO layer may directly contact each other.

6. In any one of the above 1 to 5, a second primer layer or a second adhesive layer may be further included between the printing layer and the second TPO layer.

7. In 6 above, the printing layer and the second primer layer or the second adhesive layer may be in direct contact, and the second primer layer or the second adhesive layer and the second TPO layer may directly contact each other.

8. In any one of the above 1 to 7, it may further include an acrylic or urethane-based surface protection layer on the second TPO layer.

9. In any one of 1 to 8 above, embossing may be formed on the surface of the second TPO layer.

10. In any one of the above 1 to 9, the first TPO layer may be a TPO foam layer.

11. In any one of 1 to 10 above, at least one of the first TPO layer and the second TPO layer is a hot melt adhesive resin, a filler, a reinforcing agent, a lubricant, a heat stabilizer, an antioxidant, a slip agent, a UV stabilizer, a colorant. And one or more of processing aids.

12. In any one of the above 1 to 11, the artificial leather excluding the fiber base layer may have a bending resistance measured according to KS M ISO 17694 of 50,000 times or more.

The present invention has the effect of providing an artificial leather that is eco-friendly, recyclable, and useful as a lightweight material, and has excellent abrasion resistance, scratch resistance, bending resistance, resilience, and stain resistance.

1 schematically shows an artificial leather according to an embodiment of the present invention.
Figure 2 schematically shows an artificial leather according to another embodiment of the present invention.

In the present specification, expressions in the singular include plural expressions unless the context clearly indicates otherwise.

The same reference numerals refer to the same elements throughout the specification. In addition, in describing the present invention, when it is determined that a detailed description of a related known technology may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

When the positional relationship of the two parts is described as'upper','upper','lower of','next to', etc., between the two parts unless'directly' or'direct' is used. One or more different parts may be located in the.

In describing the drawings, positional relationships such as'upper','upper','lower', and'lower' are only described based on the drawing, and do not represent an absolute positional relationship. That is, depending on the position to be observed, the positions of the'upper' and'lower' or the'upper' and'lower' may be changed to each other.

In the present specification, terms such as include or have means that a feature or component described in the specification is present, and does not preclude the possibility of adding one or more other features or components in advance.

Terms such as first and second used in the present specification may be used to describe various elements, but the elements should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another component.

In interpreting the constituent elements, it is interpreted as including an error range even if there is no explicit description.

In "a to b" representing a numerical range in the present specification, "to" is defined as ≥a and ≤b.

Hereinafter, artificial leather according to an embodiment of the present invention will be described with reference to the drawings.

1 schematically shows an artificial leather according to an embodiment of the present invention.

Referring to Figure 1, the artificial leather 100 according to an embodiment of the present invention is a fiber base layer 110; A first TPO layer 120 laminated on the fiber base layer 110; A primer layer 130 stacked on the first TPO layer 120; A printing layer 140 laminated on the primer layer 130; And a second TPO layer 150 stacked on the printed layer 140.

As the fiber base layer 110, a material capable of showing appropriate mechanical properties while exhibiting similar sensibility to natural leather may be used. Examples of the fiber base layer 110 include woven fabrics, non-woven fabrics, and/or knitted fabrics made of natural fibers and/or synthetic fibers, and examples of natural fibers include cotton fibers, and examples of synthetic fibers are nylon Fiber, rayon fiber, polyester fiber, blended fiber, and the like, but are not limited thereto.

Specifications such as the thickness of the fiber base layer 110 are not particularly limited and may vary according to required physical properties. According to one embodiment, the thickness of the fiber base layer 110 may be 0.2 to 3 mm, for example, 0.3 to 2.0 mm, and the volume and leather touch may be excellent in the above range, but is not limited thereto. .

The first TPO layer 120 may be stacked on the fiber base layer 110. The first TPO layer 120 may play a role of determining printability and overall sensibility quality in artificial leather, and may be a film including a thermoplastic polyolefin (TPO). TPO is an eco-friendly material that has elasticity of rubber and thermoplasticity of plastic at the same time, and is advantageous in manufacturing artificial leather because of its excellent resilience, shock absorption, processability, workability, flexibility, stain resistance, light weight, and recycling. TPO may include an olefin-based resin and an olefin-based rubber, examples of the olefin-based resin include polyethylene (PE), polypropylene (PP), and the like, and examples of the olefin-based rubber include ethylene-propylene monomer (EPM). Rubber, ethylene-propylene-diene monomer (EPDM) rubber, and the like, but are not limited thereto. TPO can be classified into C-TPO (compound thermoplastic polyolefin) and R-TPO (reactor thermoplastic polyolefin) depending on the manufacturing method. C-TPO is manufactured through simple physical bonding, and R-TPO is made into metal in the reactor. It is manufactured through a polymerization reaction using a metallocene catalyst or the like, and the first TPO layer 120 may include C-TPO, R-TPO, or both. For example, the first TPO layer 120 may include PE and/or PP and C-TPO and/or R-TPO including EPM and/or EPDM.

According to one embodiment, the first TPO layer 120 may be a TPO foam layer. In this case, the texture of the artificial leather may be softer. The TPO foaming layer may be prepared by mixing and foaming a foaming agent in the composition for forming the first TPO layer, but is not limited thereto.

According to one embodiment, the first TPO layer 120 may have a multilayer structure in which two or more TPO layers are stacked. In this case, it may be easier to control the physical properties of the artificial leather.

According to one embodiment, the first TPO layer 120 includes a hot-melt adhesive resin, a filler, a reinforcing agent, a lubricant, a heat stabilizer, an antioxidant, a slip agent, UV Stabilizers, colorants, processing aids, etc. may be included alone or in addition to two or more. These may be included in 0.1 to 30% by weight, for example, 0.1 to 15% by weight of the total weight of the first TPO layer 120, but the content may be changed as necessary.

The thickness of the first TPO layer 120 is not particularly limited and may vary according to required physical properties. For example, if high softness is required, the thickness needs to be thin and the hardness needs to be low. On the contrary, if high hardness is required, the thickness needs to be thick and the hardness needs to be high. . According to one embodiment, the thickness of the first TPO layer 120 may be 10 to 900 μm, and the softness and hardness of the artificial leather may be easily controlled within the above range, but is not limited thereto.

The method of manufacturing the first TPO layer 120 is not particularly limited, but may be manufactured in the form of a film through, for example, a calendaring process or a T-die extrusion process.

A first primer layer 130 may be stacked on the first TPO layer 120. The first primer layer 130 may improve adhesion between the first TPO layer 120 and the printing layer 140. In general, since TPO is non-polar, it is difficult to attach a printed material on the first TPO layer 120, and even if a printed material is attached, there may be a problem that it is easily removed due to external factors. However, when the first primer layer 130 is formed between the first TPO layer 120 and the printing layer 140 like artificial leather according to an embodiment of the present invention, this problem can be solved.

The first primer layer 130 may include a compound having polarity as a primer. For example, the first primer layer 130 may include a chlorinated polyolefin-based primer or a polyurethane-based primer (eg, a one-component or two-component polyurethane-based primer). Examples of the chlorinated polyolefin-based primer include, but are not limited to, a chlorinated polypropylene (CPP) primer.

According to an embodiment, the first TPO layer 120 and the first primer layer 130 may be in direct contact. Here, "direct contact" may mean that no other layer is interposed between the first TPO layer 120 and the first primer layer 130.

The thickness of the first primer layer 130 is not particularly limited, but may be, for example, 3 to 100 μm, and sufficient adhesion between the first TPO layer 120 and the printing layer 140 may be provided within the above range. .

The method of forming the first primer layer 130 is not particularly limited, but may be formed by coating a primer on the first TPO layer 120, for example. As a coating method, various methods such as gravure coating, spray coating, and micro gravure coating can be used without limitation.

A printing layer 140 may be stacked on the first primer layer 130. The printing layer 140 may play an important role in finalizing the appearance of the artificial leather by giving a pattern to the artificial leather 100.

According to one embodiment, the printing layer 140 may include acrylic or urethane ink. In this case, due to the polarity of the acrylic or urethane-based ink, adhesion to the first primer layer 130 including a chlorinated polyolefin-based primer or a polyurethane-based primer may be excellent.

According to one embodiment, the first primer layer 130 and the printing layer 140 may be in direct contact.

The method of forming the printing layer 140 is not particularly limited, but for example, a printed matter can be printed on the first primer layer 130 by using a gravure method, a real photo (digital print) method, a transfer method, etc. The printing method can be appropriately selected according to the resolution and print quality.

A second TPO layer 150 may be stacked on the printed layer 140. The second TPO layer 150 may protect printed matter, maintain transparency, improve visual quality, and impart surface durability of the artificial leather 100. In addition, when necessary, a color may be applied to the second TPO layer 150.

The second TPO layer 150 may be a film including TPO. For a description of the TPO, refer to the description of the TPO in the first TPO layer 120.

According to one embodiment, the second TPO layer 150 may have a multilayer structure in which two or more TPO layers are stacked. In this case, by laminating TPO layers of different physical properties (for example, by providing a foam layer to a specific layer), it is possible to design artificial leather with new physical properties, so that it is easier to control the physical properties of the artificial leather.

According to one embodiment, in addition to TPO, the second TPO layer 150 includes a hot melt adhesive resin, a filler, a reinforcing agent, a lubricant, a heat stabilizer, an antioxidant, a UV stabilizer, A coloring agent, a processing aid, etc. may be included alone or in addition to two or more. These may be included in an amount of 0.1 to 30% by weight, for example, 0.1 to 15% by weight of the total weight of the second TPO layer 150, but the content may be changed as necessary.

The thickness of the second TPO layer 150 is not particularly limited and may vary according to required physical properties. For example, when high softness is required, the thickness needs to be thin and the hardness needs to be low. On the contrary, when high hardness is required, the thickness needs to be thick and the hardness needs to be high. According to an exemplary embodiment, the thickness of the second TPO layer 150 may be 10 to 900 μm, and the softness and hardness of the artificial leather may be easily controlled within the above range, but is not limited thereto.

The method of manufacturing the second TPO layer 150 is not particularly limited, but may be manufactured in the form of a film through, for example, a calendering process or a T-die extrusion process.

According to one embodiment, the second TPO layer 150 may have an abrasion strength of 40,000 times or more measured under an 800gr load condition according to the Martindale method according to KS K ISO 12947-2. The abrasion strength of the second TPO layer 150 may be, for example, 50,000 times or more, another example, 60,000 times or more, another example, 70,000 times or more, another example, 80,000 times or more, but is limited thereto. no.

Figure 2 schematically shows an artificial leather according to another embodiment of the present invention.

Referring to FIG. 2, a first adhesive layer 260 may be further included between the fiber base layer 210 and the first TPO layer 220.

As an adhesive used when forming the first adhesive layer 260, a known adhesive may be used without limitation within a range that does not impair the object of the present invention. According to one embodiment, a water-based adhesive or a solvent-free adhesive may be used as the adhesive in consideration of VOC and odor, and examples of the water-based adhesive include a water-dispersed two-component urethane-based adhesive, but are not limited thereto.

The thickness of the first adhesive layer 260 is not particularly limited, but may be, for example, 1 to 100 μm, and sufficient adhesion between the fiber base layer 210 and the first TPO layer 220 may be provided within the above range. have.

The method of forming the first adhesive layer 260 is not particularly limited, but may be formed by coating an adhesive on the fiber base layer 210 and/or the first TPO layer 220, for example. As a coating method, various methods such as gravure coating, spray coating, and micro gravure coating can be used without limitation.

According to one embodiment, the fiber base layer 210 and the first adhesive layer 260 may be in direct contact, and the first adhesive layer 260 and the first TPO layer 220 may be in direct contact.

Referring again to FIG. 2, a second primer layer or a second adhesive layer 270 may be further included between the printing layer 240 and the second TPO layer 250. For a description of the second primer layer 250, refer to the description of the first primer layer 230.

As an adhesive used when forming the second adhesive layer 270, a known adhesive may be used without limitation within a range that does not impair the object of the present invention. According to one embodiment, a water-based adhesive or a solvent-free adhesive may be used as the adhesive in consideration of VOC and odor, and examples of the water-based adhesive include a water-dispersed two-component urethane-based adhesive, but are not limited thereto.

The thickness of the second primer layer or the second adhesive layer 270 is not particularly limited, but may be, for example, 1 to 100 μm, and sufficient adhesion between the printing layer 240 and the second TPO layer 250 in the above range Can be provided.

The method of forming the second primer layer or the second adhesive layer 270 is not particularly limited, but may be formed by coating a primer or an adhesive on the printing layer 240 and/or the second TPO layer 250, for example. . As a coating method, various methods such as gravure coating, spray coating, and micro gravure coating can be used without limitation.

According to one embodiment, the printing layer 240 and the second primer layer or the second adhesive layer 270 are in direct contact, and the second primer layer or the second adhesive layer 270 and the second TPO layer 250 are directly Can be contacted.

FIG. 2 shows that the artificial leather 200 includes both a first adhesive layer 260 and a second primer layer or a second adhesive layer 270, but the artificial leather according to an embodiment of the present invention It may include only one of the first adhesive layer 260 and the second primer layer or the second adhesive layer 270.

According to one embodiment, an acrylic or urethane-based surface protection layer (not shown) may be further included on the second TPO layers 150 and 250. In this case, scratch resistance may be improved and a matte effect may be exhibited by the surface protective layer.

According to one embodiment, embossing may be formed (not shown) on the surfaces of the second TPO layers 150 and 250. In this case, a visual effect of texture may be expressed.

According to one embodiment, artificial leather excluding a fibrous base layer (i.e., artificial leather in which a first TPO layer, a primer layer, a printing layer, and a second TPO layer are sequentially stacked) (hereinafter also referred to as'a sheet for artificial leather') The bending resistance measured according to KS M ISO 17694 may be 50,000 times or more. The degree of curvature of the artificial leather sheet may be, for example, 60,000 or more, another example, 70,000 or more, and another example, 80,000 or more, but is not limited thereto.

The above-described artificial leather is eco-friendly, effective in reducing VOC, and is useful as a lightweight material due to its low specific gravity, by including a structure of a fiber base layer/first TPO layer/first primer layer/print layer/second TPO layer. Flexibility, stain resistance, etc. may be excellent.

In the above-described artificial leather, for example, a first primer layer is formed on the surface of the first TPO layer, a printing layer is formed on the first primer layer, a second TPO layer is adhered on the printing layer, and the first TPO It may be prepared including the step of adhering the fiber base layer on the back side of the layer. For example, forming a first primer layer by coating a primer on the surface of the first TPO layer in the form of a film; Attaching a printed material on the first primer layer using a gravure method, a photorealistic (digital print) method, a transfer method, or the like to form a printing layer; Laminating a second TPO layer in the form of a film on the printed layer, followed by pressure bonding or thermocompression bonding, or applying a primer or an adhesive on the printed layer and/or the second TPO layer, and then laminating and bonding the printed layer and the second TPO layer; In addition, after laminating the fiber base layer on the back side of the first TPO layer and then pressing or thermocompression bonding, or after applying an adhesive on the back side of the first TPO layer and/or the fiber base layer, the back side of the first TPO layer and the fiber base layer may be laminated and adhered. have. Alternatively, the above-described artificial leather adheres the first TPO layer on the fiber base layer, forms a first primer layer on the first TPO layer, forms a print layer on the first primer layer, and It may be prepared including the step of adhering the second TPO layer to. For example, after laminating the first TPO layer in the form of a film on the fibrous substrate layer and then press-bonding or thermocompression bonding, or after applying an adhesive on the fibrous substrate layer and/or the first TPO layer, the fibrous substrate layer and the first TPO layer are laminated. To adhere; Forming a first primer layer by coating a primer on the first TPO layer; Attaching a printed material on the first primer layer using a gravure method, a photorealistic (digital print) method, a transfer method, or the like to form a printing layer; In addition, after laminating a second TPO layer in the form of a film on the printing layer, pressing or thermocompression bonding, or applying a primer or an adhesive on the printing layer and/or the second TPO layer, and then laminating the printing layer and the second TPO layer to be bonded. I can. Optionally, it may further include forming a surface protective layer by coating a coating agent for a surface protective layer, for example, an acrylic or urethane-based coating agent on the second TPO layer. In addition, optionally, it may further include the step of forming an embossing on the surface of the second TPO layer, for example, the above-described fiber base layer / (first adhesive layer) / first TPO layer / first primer layer / printing layer / An artificial leather including (second primer layer or second adhesive layer)/second TPO layer/(surface protection layer) may be passed through an embossing roll to form embossing on the surface of the second TPO layer.

The above-described artificial leather is eco-friendly and can have excellent moldability, contamination resistance, abrasion resistance, bending resistance, and the like, and can be usefully used for bags, shoe skins, sofas, tables, exterior finishing materials for furniture, flooring materials, automobile interior materials, and the like.

Hereinafter, the present invention will be described in more detail with reference to examples. However, this has been presented as a preferred example of the present invention, and it cannot be construed as limiting the present invention in any sense.

Example

Manufacturing Example 1

First, the melt-flow index (MI) measured according to ASTM D1238 is 1g/10min (190°C, 2.16kg), the Shore A hardness measured according to ASTM D2240 is 76, and the thickness is 180㎛. A first primer layer was formed by coating and drying a primer (JR-650, Jinkwang) on the first TPO layer film (Hanwha Solutions) in a gravure method (chamber temperature: about 80°C, speed: about 15m/min). Thereafter, a printing layer was formed on the first primer layer in a gravure method (chamber temperature: about 100°C, speed: about 15m/min). Then, the 2nd TPO layer film (Hanwha Solutions Co., Ltd.) with an MI of 3g/10min (190℃, 2.16kg) measured according to ASTM D1238, 75 Shore A hardness measured according to ASTM D2240, and 100㎛ thickness (Hanwha Solutions Co., Ltd.) On top of the gravure method (chamber temperature: about 80℃, speed: about 10m/min), an adhesive (KW-100, Heungin Chemical Co., Ltd.) was coated and bonded to the printing layer, aging at about 60℃ for 24 hours, and then the embossing process. (Temperature: about 180°C, pressure: about 50kgf) to prepare a sheet for artificial leather.

Manufacturing Example 2

As a 2nd TPO layer film, a TPO film with a MI of 1g/10min (190℃, 2.16kg) measured according to ASTM D1238, a Shore A hardness of 75, and a thickness of 100㎛ measured according to ASTM D2240 (Hanwha Solutions Co., Ltd.) A sheet for artificial leather was manufactured using the same method as in Example 1, except that) was used.

Comparative Example 1

Instead of attaching the second TPO layer film on the printed layer, a urethane-based surface layer is formed in a gravure method (chamber temperature: about 100℃, speed: about 15m/min) using a liquid urethane-based coating agent (KU-904, Heungin Chemical Co., Ltd.) Except for one, using the same method as in Example 1 to prepare a sheet for artificial leather.

Comparative Example 2

Instead of attaching the second TPO layer film on the printed layer, a liquid acrylic coating agent (KA-160, Heungin Chemical Co., Ltd.) is used to form an acrylic surface layer in a gravure method (chamber temperature: about 100℃, speed: about 15m/min). Except for one, using the same method as in Example 1 to prepare a sheet for artificial leather.

Comparative Example 3

Instead of attaching the 2nd TPO layer film on the printed layer, the gravure method (2 times a liquid urethane-based coating agent (KU-904, Heungin Chemical Co., Ltd.) and two times a liquid acrylic-based coating agent (KA-160, Heungin Chemical Co., Ltd.) A sheet for artificial leather was prepared in the same manner as in Example 1, except that a urethane-based/acrylic-based surface layer was formed at a chamber temperature: about 100°C, a speed: about 15m/min).

Comparative Example 4

Instead of attaching the second TPO layer film on the printed layer, a liquid two-component type urethane coating agent (KW-328, Heungin Chemical Co., Ltd.) is used to use a gravure method (chamber temperature: about 150℃, speed: about 10m/min). A sheet for artificial leather was prepared in the same manner as in Example 1, except that a urethane-based surface layer was formed.

Comparative Example 5

A sheet for artificial leather was prepared in the same manner as in Example 1, except that a TPU film (T-MAX, SKF Corporation) was adhered instead of the second TPO layer film on the printed layer.

The prepared artificial leather sheet was evaluated for physical properties as follows, and the results are shown in Table 1 below.

Property evaluation method

(1) Abrasion resistance (unit: times): In accordance with the KS K ISO 12947-2 standard, the abrasion strength of the surface of the 2nd TPO layer for artificial leather sheet was measured under 800gr load condition according to the Martindale method.

(2) Bending resistance (unit: times): According to KS M ISO 17694: 2004, the number of reciprocating bendings before the occurrence of lifting or cracking of the artificial leather sheet at room temperature using a bending strength test apparatus (resistance to bending Figure) was measured.

(3) Touch Feel: Through the tactile test, if the artificial leather sheet is soft and has excellent elasticity, it is marked as O, if it is not, X, and △ if it is not satisfactory but available.

Manufacturing Example 1 Manufacturing Example 2 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Wear resistance (times) 80,000 or more 80,000 or more 8,200 7,500 15,900 19,800 35,000 Flexibility (times) 80,000 or more 80,000 or more 35,000 20,500 18,000 8,200 45,000 Touch Feel O O O X X X △

As can be seen from Table 1 above, the sheet for artificial leather of Example 1-2 in which the first TPO layer, the first primer layer, the printing layer, and the second TPO layer were sequentially stacked was in Comparative Example 1-4. Compared to that, it can be seen that abrasion resistance, bending resistance, and touch feel are all excellent. Accordingly, it can be seen that the artificial leather according to an embodiment of the present invention manufactured by applying such a sheet for artificial leather to a fiber base layer will also have excellent wear resistance, bending resistance, and touch feel.

So far, the present invention has been looked at around the examples. Those of ordinary skill in the art to which the present invention pertains will be able to understand that the present invention may be implemented in a modified form without departing from the essential characteristics of the present invention. Therefore, the disclosed embodiments should be considered from an illustrative point of view rather than a limiting point of view. The scope of the present invention is shown in the claims rather than the above description, and all differences within the scope equivalent thereto should be construed as being included in the present invention.

100, 200: artificial leather
110, 210: fiber base layer
120, 220: 1st TPO layer
130, 230: first primer layer
140, 240: printed layer
150, 250: 2nd TPO layer
260: first adhesive layer
270: second primer layer or second adhesive layer

Claims (12)

Fiber base layer;
A first thermoplastic polyolefin elastomer (TPO) layer laminated on the fiber base layer;
A first primer layer stacked on the first TPO layer;
A printing layer laminated on the first primer layer; And
A second TPO layer laminated on the printing layer; Including, artificial leather.
The method of claim 1,
The second TPO layer is an artificial leather having an abrasion strength of 40,000 or more times measured under 800gr load condition according to the Martindale method according to KS K ISO 12947-2.
The method of claim 1,
The first TPO layer and the first primer layer are in direct contact,
Artificial leather in which the first primer layer and the printing layer are in direct contact.
The method of claim 1,
Artificial leather further comprising a first adhesive layer between the fiber base layer and the first TPO layer.
The method of claim 4,
The fiber base layer and the first adhesive layer are in direct contact,
Artificial leather in which the first adhesive layer and the first TPO layer are in direct contact.
The method of claim 1,
Artificial leather further comprising a second primer layer or a second adhesive layer between the printing layer and the second TPO layer.
The method of claim 6,
The printing layer and the second primer layer or the second adhesive layer are in direct contact,
Artificial leather in which the second primer layer or the second adhesive layer and the second TPO layer are in direct contact.
The method of claim 1,
Artificial leather further comprising an acrylic or urethane-based surface protection layer on the second TPO layer.
The method of claim 1,
The artificial leather is embossed on the surface of the second TPO layer.
The method of claim 1,
The first TPO layer is a TPO foam layer, artificial leather.
The method of claim 1,
At least one of the first TPO layer and the second TPO layer is one or more of a hot melt adhesive resin, a filler, a reinforcing agent, a lubricant, a heat stabilizer, an antioxidant, a slip agent, a UV stabilizer, a colorant, and a processing aid. That further includes, artificial leather.
The method of claim 1,
An artificial leather having a bending resistance of 50,000 times or more as measured in accordance with KS M ISO 17694 with respect to the artificial leather excluding the fiber base layer.

Images