JP7490272B1 - Synthetic leather and manufacturing method - Google Patents

Abstract

[Problem] To improve flexibility and touch without compromising abrasion resistance in polyvinyl chloride synthetic leather. [Solution] A synthetic leather includes a resin layer 2, a fabric layer 4 containing a material, and an adhesive layer 3 that bonds the resin layer 2 and the fabric layer 4, and the resin layer 2 has a main body portion 5 containing polyvinyl chloride resin and a surface portion 6 containing polycarbonate resin and silicone resin, and the main body portion 5 contacts the adhesive layer 3 on one side and contacts the surface portion 6 on the other side. [Selected Figure] Figure 1

Description

The present invention relates to synthetic leather and a method for producing synthetic leather.

Synthetic leather is widely used for automobile seats and the like. A typical synthetic leather contains a base fabric layer containing fabric and a resin layer containing a resin material, and the resin materials that make up the resin layer are typically polyvinyl chloride resin and polyurethane resin. When polyvinyl chloride resin is used, it is advantageous in terms of cost compared to when polyurethane resin is used due to the difference in raw material costs, but the problem is that it is inferior in mechanical properties such as abrasion resistance. Conventional polyvinyl chloride-based synthetic leather generally compensates for the disadvantages in mechanical properties by providing a thicker resin layer than polyurethane-based synthetic leather, but it was sometimes difficult to satisfy all of the various performance aspects such as mechanical properties, weight, flexibility, touch, and texture.

In view of the above problems, various techniques have been considered for forming a part of the resin layer in polyvinyl chloride-based synthetic leather as a foam layer. For example, JP 2020-180191 A (Patent Document 1) discloses a foamed resin layer containing a polyvinyl chloride-based resin and a thermoplastic polyurethane elastomer, and synthetic leather containing the foamed resin layer. The technique of Patent Document 1 makes it possible to provide synthetic leather that is lightweight and has excellent abrasion resistance. In addition, JP 2017-210703 A (Patent Document 2) discloses synthetic leather that includes a foamed resin layer containing a vinyl chloride resin and a plasticizer, and a resin layer containing polyurethane. The technique of Patent Document 2 makes it possible to provide synthetic leather that has excellent abrasion resistance and is less likely to wrinkle.

JP 2020-180191 A JP 2017-210703 A

However, the technologies of Patent Documents 1 and 2 merely improve the structure on the premise of providing a foamed resin layer, and the improvement effect is limited. In particular, the flexibility and feel do not reach a level comparable to polyurethane synthetic leather.

Thus, there is a demand for improving the flexibility and feel of polyvinyl chloride-based synthetic leather without compromising its abrasion resistance.

The synthetic leather of the present invention includes a resin layer, a base fabric layer including a material, and an adhesive layer that bonds the resin layer and the base fabric layer, wherein the resin layer has a main body portion including polyvinyl chloride resin as a main component , and a surface portion including polycarbonate resin and silicone resin and having polycarbonate resin or silicone resin as a main component , and the main body portion is in contact with the adhesive layer on one side and in contact with the surface portion on the other side.

The manufacturing method according to the present invention is a method for manufacturing synthetic leather comprising a resin layer, a base fabric layer containing a material, and an adhesive layer bonding the resin layer and the base fabric layer, wherein the resin layer has a main body portion containing polyvinyl chloride resin as a main component , and a surface portion containing polycarbonate resin and silicone resin and having polycarbonate resin or silicone resin as a main component, the manufacturing method comprising the steps of forming the main body portion, forming the adhesive layer on one side of the main body portion, bonding the base fabric layer to the adhesive layer, and forming the surface portion on the other side of the main body portion.

In these configurations, instead of the abrasion resistance that is ensured by providing a foamed resin layer or the like in conventional polyvinyl chloride synthetic leathers, abrasion resistance is ensured by providing a surface portion that contains polycarbonate resin and silicone resin, making it easier to make the resin layer thinner. This makes it possible to improve the flexibility and feel of the synthetic leather without compromising abrasion resistance.

The following describes preferred embodiments of the present invention. However, the scope of the present invention is not limited to the preferred embodiments described below.

In one embodiment of the synthetic leather according to the present invention, the fabric preferably has a basis weight of 150 g/ ^m2 or more and 300 g/ ^m2 or less.

In this configuration, a thicker fabric is used than the fabric typically used for the base fabric layer in conventional polyvinyl chloride-based synthetic leather. This tends to improve the feel of the synthetic leather.

In one embodiment of the synthetic leather according to the present invention, the fabric is preferably brushed.

This configuration makes it easier to improve the cushioning properties of the synthetic leather.

In one embodiment, the manufacturing method according to the present invention preferably further includes a step of adsorbing the surface portion onto the outer peripheral surface of a support having an uneven outer peripheral surface and a negative pressure on the inside to form the resin layer.

With this configuration, the texture is less likely to show when the resin layer is shaped, making it easier to add decoration as intended.

Further features and advantages of the present invention will become more apparent from the following description of exemplary and non-limiting embodiments, which are given with reference to the drawings.

1 is a schematic cross-sectional view showing a structure of a synthetic leather according to an embodiment. 1A to 1C are schematic diagrams showing a shaping device used in a manufacturing method according to an embodiment and a method of using the same.

Embodiments of the synthetic leather and manufacturing method according to the present invention will be described with reference to the drawings. Below, an example will be described in which the synthetic leather and manufacturing method according to the present invention are applied to synthetic leather 1 and its manufacturing method.

[Composition of synthetic leather]
The synthetic leather 1 according to this embodiment includes a resin layer 2, an adhesive layer 3, and a base fabric layer 4, and the resin layer 2 has a main body portion 5 and a surface portion 6 (FIG. 1). The main body portion 5 is in contact with the adhesive layer 3 on one side, and in contact with the surface portion 6 on the other side. The synthetic leather 1 is used, for example, for automobile seats, and the surface of the resin layer 2 is decorated with irregularities. Note that FIG. 1 is a schematic diagram of the layer structure of the synthetic leather 1, and the thickness ratios of the various portions in FIG. 1 are not accurate. Also, FIG. 1 does not show the irregularities on the surface of the resin layer 2.

Of the resin layer 2, the main body portion 5 contains polyvinyl chloride resin. Preferably, the main body portion 5 contains polychlorinated resin as a main component. Here, the main component refers to the material that occupies the largest weight ratio among the materials that make up the main body portion 5. The main body portion 5 is also generally called the skin layer in the field of synthetic leather. The polyvinyl chloride resin contained in the main body portion 5 may have a degree of polymerization of, for example, 1300 or more and 2500 or less.

Of the resin layer 2, the surface portion 6 is a portion called a surface treatment layer, and contains polycarbonate resin and silicone resin. Preferably, the surface portion 6 is mainly composed of polycarbonate resin or silicone resin. Here, the main component refers to the material that occupies the largest weight ratio among the materials that make up the surface portion 6. The surface portion 6 is also generally called a surface treatment layer in the field of synthetic leather.

There is no particular limitation on the polycarbonate resin contained in the surface portion 6. Therefore, a commercially available polycarbonate resin-containing surface treatment agent sold by, for example, Stahl, Dainichiseika Color & Chemicals Mfg. Co., Ltd., and Seiko Kasei Co., Ltd., etc., can be used to form the surface portion 6. The content of the polycarbonate resin in the surface portion 6 is, for example, 10 g/ ^m2 or more and 30 g/ ^m2 or less, but is not limited thereto.

The silicone resin contained in the surface portion 6 is not particularly limited. Therefore, a commercially available silicone resin-containing surface treatment agent sold by, for example, Nissin Chemical Industry Co., Ltd., Stahl, and Seiko Chemical Co., Ltd. can be used to form the surface portion 6. That is, the surface portion 6 (surface treatment layer) containing polycarbonate resin and silicone resin can be formed by, for example, applying a commercially available polycarbonate resin-containing surface treatment agent and a commercially available silicone resin-containing surface treatment agent.

The weight of the resin layer 2 is not particularly limited, but may be, for example, 160 g/ ^m2 to 300 g/ ^m2 inclusive. Of these, the surface portion 6 may be, for example, 10 g/ ^m2 to 30 g/ ^m2 inclusive, and the main body portion 5 may be the remainder.

The adhesive layer 3 may contain an adhesive commonly used in the field of synthetic leather. An example of such an adhesive is an adhesive containing polyvinyl chloride resin. In this case, the polyvinyl chloride resin may have a degree of polymerization of, for example, 1000 to 1700. The weight of the adhesive layer 3 is not particularly limited, but may be, for example, 65 g/ ^m2 to 180 g/ ^m2 .

The base fabric layer 4 includes a fabric. Such fabric may be, for example, but is not limited to, a woven fabric, a single jersey, a double jersey, a tricot, a raschel, a double raschel, a nonwoven fabric, etc.

The fabric contained in the base fabric layer 4 preferably has a basis weight of 150 g/ ^m2 or more and 300 g/ ^m2 or less. When the basis weight of the fabric is 150 g/ ^m2 or more, the feel (cushioning, etc.) of the synthetic leather 1 tends to be good. When the basis weight of the fabric is 300 g/ ^m2 or less, the bending resistance of the synthetic leather 1 tends to be in a range suitable for use in automobile seats.

The fabric contained in the base fabric layer 4 is preferably brushed. This is preferable because it makes it easier to increase the cushioning properties of the synthetic leather. There are no limitations on the color of the fabric contained in the base fabric layer 4, but it is preferable to use the same color or a similar color as the resin layer 2 (main body portion 5) because this makes the base fabric layer 4 less noticeable in perforations, etc.

[Method of manufacturing synthetic leather]
Next, a method for producing the synthetic leather 1 according to the present embodiment will be described. In the method for producing the synthetic leather 1 according to the present embodiment, the process for producing the synthetic leather 1 is carried out in three stages, namely, a first stage, a second stage, and a third stage.

In the first stage, a first semi-finished product is manufactured, which is composed of a main body portion 5, an adhesive layer 3, and a base fabric layer 4. The first semi-finished product is manufactured by stacking the main body portion 5, the adhesive layer 3, and the base fabric layer 4 in order on top of a release paper, and finally removing the release paper.

First, a process for forming the main body 5 is carried out. Specifically, polyvinyl chloride resin is applied and dried to the release paper sent out from a release paper supply source (for example, in a roll form), and the main body 5 is formed on the release paper. Next, a process for forming an adhesive layer 3 on one side of the main body 5 is carried out. Specifically, adhesive is applied to the main body 5 formed on the release paper. Then, a process for adhering the base fabric layer 4 to the adhesive layer 3 is carried out. Specifically, the base fabric layer 4 is attached to the main body 5 formed on the release paper and the adhesive layer 3. Through these processes, a first semi-finished product with release paper is obtained. Finally, the release paper is peeled off from the main body 5 of the first semi-finished product, and the release paper and the first semi-finished product are collected separately. There are no limitations on the manner in which the release paper and the first semi-finished product are collected, but considering ease of use in the next process, it is preferable that they are collected in a rolled form.

In the second stage, the body portion 5 of the first semi-finished product is surface-treated to form the surface portion 6, and a second semi-finished product is manufactured, which is composed of the resin layer 2 (surface portion 6 and body portion 5), adhesive layer 3, and base fabric layer 4. That is, a process of forming a surface portion on the other side of the body portion 5 is carried out. Specifically, a surface treatment agent containing polycarbonate resin and silicone resin is applied to the first semi-finished product sent out from a supply source of the first semi-finished product (for example, in a roll form) and then dried, and the surface portion 6 is formed on the body portion 5.

In the third stage, a relief pattern is formed on the resin layer 2 of the second semi-finished product to decorate it. That is, the process of shaping the resin layer 2 is carried out. The shaping device 10 used in this process has a heater 11 that heats the second semi-finished product 20, a ceramic roll 12 (an example of a support), and a pressure reducing device (not shown) that creates negative pressure inside the roll 12 (Figure 2). Note that Figure 2 shows a schematic configuration of the shaping device 10, and the dimensional ratios of the various parts are not accurate.

The roll 12 is made of ceramics and has voids through which air can pass, so air is sucked from the outside to the inside of the roll 12 by negative pressure. The outer peripheral surface of the roll 12 has projections and recesses 13 formed thereon that correspond to the pattern to be transferred to the resin layer 2.

The second semi-finished product 20 is heated by the heater 11 and then introduced into the roll 12. This heating is intended to soften the vinyl chloride resin of the resin layer 2 to make it easier to shape. In the roll 12, the resin layer 2 of the second semi-finished product 20 is adsorbed onto the outer peripheral surface of the roll 12 using the negative pressure from the pressure reducing device as the driving force. At this time, the irregularities 13 on the outer peripheral surface of the roll 12 are transferred to the resin layer 2, and the resin layer 2 is shaped.

By shaping the resin layer 2 using negative pressure as a driving force, the texture of the fabric layer 4 is less likely to appear on the surface of the resin layer 2, making it easier to add decoration as intended. The problem of the texture of the fabric layer 4 appearing on the surface of the resin layer 2 is likely to occur when the resin layer 2 is thin (when the weight of the resin layer 2 is small). On the other hand, if the contact force between the roll and the resin layer 2 is reduced to avoid the problem of the texture of the fabric layer 4 appearing on the surface of the resin layer 2, there is a risk that the intended decoration will not be obtained. Therefore, when the resin layer 2 is thin, it is difficult to determine shaping conditions under which the texture of the fabric layer 4 does not appear and sufficient decoration can be added. When a method using negative pressure as a driving force is adopted as a shaping method for the resin layer 2, it is easier to avoid the texture appearing and add sufficient decoration at the same time, compared to the method of pressing the synthetic leather 1 against a roll. Therefore, when the weight of the resin layer 2 is relatively small, the method using negative pressure as a driving force is particularly advantageous as a shaping method for the resin layer 2 compared to the method of pressing the synthetic leather 1 against a roll. In the synthetic leather 1 according to the present embodiment, the weight of the resin layer 2 is preferably 160 g/ ^m2 or more and 300 g/ ^m2 , but this suitable range of basis weight is in a region smaller than the weight of a typical resin layer in a conventional polyvinyl chloride-based synthetic leather. In other words, since the weight of the resin layer 2 in the preferred embodiment of the synthetic leather 1 according to the present embodiment is smaller than the weight of the resin layer in a conventional polyvinyl chloride-based synthetic leather, it is advantageous to shape the resin layer 2 by a method using negative pressure as a driving force.

Other embodiments
Finally, other embodiments of the synthetic leather and the manufacturing method according to the present invention will be described. Note that the configurations disclosed in the following embodiments can be combined with the configurations disclosed in other embodiments as long as no contradiction occurs.

In the above embodiment, synthetic leather 1 including a resin layer 2, an adhesive layer 3, and a base fabric layer 4 has been described as an example. However, in the synthetic leather according to the present invention, the presence of other layers is not excluded as long as the resin layer and the base fabric layer are bonded by an adhesive layer. Similarly, the presence of other parts is not excluded as long as the resin layer has a main body portion including polyvinyl chloride resin and a surface portion including polycarbonate resin and silicone resin.

In the above embodiment, a configuration in which the resin layer 2 is shaped using a ceramic roll 12 has been described as an example. However, in the manufacturing method according to the present invention, the step of shaping the resin layer may or may not be included. The method of shaping the resin layer is not limited to the above configuration. For example, a method of forming a main body on embossed release paper and transferring the unevenness of the release paper to the main body, or a method of pressing the main body against a roll made of a material other than ceramics (such as iron) and transferring the unevenness of the roll can be used. Note that when the unevenness of the release paper is transferred to the main body, the third step of the manufacturing method according to the above embodiment can be omitted.

Among these methods, when using a roll (regardless of material), a desired pattern can be formed on the resin layer 2 by installing a roll having projections and recesses corresponding to the desired pattern in equipment available to the user. In contrast, when using release paper, the patterns that can be formed on the resin layer 2 are limited to the range of commercially available release papers, unless the release paper is manufactured in equipment available to the user. Since it is not common for a manufacturer of synthetic leather 1 to manufacture release paper, the use of a roll has the advantage of allowing greater freedom of shaping and easier design changes than the use of release paper. Therefore, shaping the resin layer 2 using a method using negative pressure as a driving force is particularly advantageous in that it allows both the addition of the intended decoration and the freedom of decoration in a preferred embodiment of the synthetic leather 1 according to this embodiment.

As for other configurations, it should be understood that the embodiments disclosed in this specification are illustrative in all respects and that the scope of the present invention is not limited thereto. Those skilled in the art will easily understand that appropriate modifications are possible without departing from the spirit of the present invention. Therefore, other embodiments that are modified without departing from the spirit of the present invention are naturally included in the scope of the present invention.

The present invention will be further described below with reference to examples. However, the present invention is not limited to the following examples.

[Production of test pieces]
The synthetic resin manufacturing method of each of the examples and comparative examples will be described. Note that unless otherwise specified, the above embodiment will be followed.

Example 1
The resin layer had a basis weight of 300 g/ ^m2 , and the fabric layer had a basis weight of 250 g/ ^m2 . The surface was formed using a surface treatment agent containing polycarbonate resin and silicone resin (referred to as "PC, Si" in Table 1). The fabric of the fabric layer was black and not brushed. The resin layer was shaped by adsorbing it onto a ceramic roll (referred to as "adsorption" in Table 1).

Example 2
The resin layer had a basis weight of 300 g/ ^m2 , and the fabric layer had a basis weight of 150 g/ ^m2 . The surface was formed using a surface treatment agent containing polycarbonate resin and silicone resin. The fabric of the fabric layer was white and not brushed. The resin layer was shaped by transferring the unevenness of the release paper to the main body (referred to as "release paper" in Table 1).

Example 3
The resin layer had a basis weight of 300 g/ ^m2 , and the fabric layer had a basis weight of 150 g/ ^m2 . The surface was formed using a surface treatment agent containing polycarbonate resin and silicone resin. The fabric of the fabric layer was a white fabric that was not brushed. The resin layer was shaped by a method of transferring the unevenness of an iron roll to the main body (listed as "iron" in Table 1), and the pressing force when pressing the synthetic leather against the iron roll was adjusted to a range in which the texture of the fabric layer did not appear on the surface of the resin layer.

Example 4
The resin layer had a basis weight of 300 g/ ^m2 , and the fabric layer had a basis weight of 300 g/ ^m2 . The surface was formed using a surface treatment agent containing polycarbonate resin and silicone resin. The fabric of the fabric layer was a black brushed fabric. The resin layer was shaped by adsorbing it onto a ceramic roll.

(Comparative Example 1)
This is an example of a conventional polyvinyl chloride synthetic leather. The resin layer had a basis weight of 600 g/ ^m2 , and the base fabric layer had a basis weight of 150 g/ ^m2 . The resin layer had a surface layer and a main body, as well as an intermediate layer made of foamed polyvinyl chloride resin, and the intermediate layer was in contact with the adhesive layer. The surface was formed using a surface treatment agent containing polyurethane resin (referred to as "PU" in Table 1). The base fabric layer was a white, unbrushed fabric. The resin layer was shaped by transferring the unevenness of the release paper to the main body.

(Comparative Example 2)
A synthetic leather according to Comparative Example 2 was obtained in the same manner as in Comparative Example 1, except that the resin layer was shaped by transferring the unevenness of an iron roll to the main body. The pressing force used to press the synthetic leather against the iron roll was adjusted within a range in which the texture of the base fabric layer did not appear on the surface of the resin layer.

(Comparative Example 3)
This is an example of conventional polyvinyl chloride synthetic leather without an intermediate layer. The resin layer had a basis weight of 300 g/ ^m2 , and the fabric layer had a basis weight of 150 g/ ^m2 . The surface was formed using a surface treatment agent containing polyurethane resin. The fabric of the fabric layer was white and not brushed. The resin layer was shaped by adsorbing it onto a ceramic roll.

(Comparative Example 4)
This is an example of a conventional polyvinyl chloride synthetic leather with a modified surface treatment method. The resin layer has a basis weight of 600 g/ ^m2 , and the fabric layer has a basis weight of 150 g/ ^m2 . The surface is formed using a surface treatment agent containing polycarbonate resin and silicone resin. The fabric of the fabric layer is white and not brushed. The resin layer is shaped by adsorbing it onto a ceramic roll.

(Comparative Example 5)
This is an example of a conventional polyurethane-based synthetic leather. The main body contains polyurethane resin, and the resin layer has a basis weight of 150 g/ ^m2 and the base fabric layer has a basis weight of 300 g/ ^m2 . The surface is formed using a surface treatment agent containing polyurethane resin. The base fabric layer is a black brushed fabric. The resin layer is shaped by transferring the unevenness of the release paper to the main body.

(Comparative Example 6)
This is an example of a conventional polyurethane-based synthetic leather. The main body contains polyurethane resin, and the resin layer has a basis weight of 100 g/ ^m2 and the base fabric layer has a basis weight of 200 g/ ^m2 . The surface is formed using a surface treatment agent containing polyurethane resin. The base fabric layer is a black, unbrushed fabric. The resin layer is shaped by transferring the unevenness of the release paper to the main body.

[Evaluation of test specimens]
(Bending hardness test)
For each of the Examples and Comparative Examples, a bending hardness test was conducted by sensory evaluation. A test piece measuring 22 cm x 17 cm was prepared for each Example, placed on a desk with the surface portion 6 facing up, and the tester placed his/her hand on the test piece. With the thumb spread and the other four fingers closed, the palm was removed from the test piece while the fingertips were in contact with the test piece, and then the test piece was grasped. The bending hardness of the test piece was evaluated based on the resistance felt by the palm and fingers. Comparative Example 6 (conventional polyurethane synthetic leather) was used as the standard for the highest evaluation of "A" and Comparative Example 2 (conventional polyvinyl chloride synthetic leather) was used as the standard for the lowest evaluation of "E", and the bending hardness of the test piece was selected from five levels A to E according to the subjective opinion of the tester.

(Slipperiness test)
A sensory evaluation of the slipperiness was carried out for each of the Examples and Comparative Examples. A test piece measuring 22 cm x 17 cm was prepared for each Example, and placed on a platform balance with the surface portion 6 facing up, and the tester's index, middle, and ring fingertips (beyond the first joint) were brought into contact with the test piece. The test piece was pressed with the three fingers, and the fingertips were moved back and forth while keeping the reading on the platform balance at 300 g. The slipperiness of the test piece was evaluated based on the resistance felt at the fingertips at this time. Comparative Example 6 (conventional polyurethane synthetic leather) was used as the standard for the highest evaluation of "A" and Comparative Example 2 (conventional polyvinyl chloride synthetic leather) was used as the standard for the lowest evaluation of "E", and the tester's subjective evaluation of the slipperiness of the test piece was selected from five levels A to E.

(Pressure Test)
A sensory evaluation of the indentation property was carried out for each of the Examples and Comparative Examples. A test piece measuring 22 cm x 17 cm was prepared for each Example, placed on a desk with the surface portion 6 facing up, and pressed by the tester's index finger. The indentation property of the test piece was evaluated based on the rebound sensation felt by the fingertip at this time. Comparative Example 5 (a conventional polyurethane synthetic leather with a raised base fabric layer 4) was used as the standard for the highest evaluation of "A" and Comparative Example 1 (a conventional polyvinyl chloride synthetic leather) was used as the standard for the lowest evaluation of "E", and the indentation property of the test piece was subjectively selected from five levels A to E by the tester.

(Visual Test)
Each of the examples and comparative examples was visually observed to confirm the state of the pattern on the surface. The state of the pattern on each example was evaluated on a two-level scale of A or E as follows.
A: The pattern is visible even when observed from a distance of 30 cm or more from the test piece.
E: The pattern can be seen only when approaching within 30 cm of the test piece.

(Bending resistance test)
For each of the examples and comparative examples, a bending test was performed based on JIS L 1096:2020 (bending resistance test method A (45° cantilever method)). The test results for each example are shown in Table 1.

(Wear resistance test)
For each of the Examples and Comparative Examples, an abrasion resistance test was conducted in accordance with JASO M403-88 (friction strength method B). However, the load was changed to 3 kg. The number of abrasions until damage was observed on the surface of the test piece was recorded as the test result for each example. For test pieces that did not show damage when the number of abrasions reached 28,000, the test was terminated at that point. The numerical values of the test results for each example are shown in Table 1.

(KES test)
For each of the Examples and Comparative Examples, a bending hardness test and a bending recovery test were carried out using KES-FB2-A. The test results for each Example are shown in Table 1.

〔result〕
The evaluations of each of the Examples and Comparative Examples are shown in Table 1. As shown in Table 1, in Examples 1 to 4, synthetic leathers were obtained that had higher abrasion resistance and were excellent in flexibility and touch compared to Comparative Examples 1 and 2, which were conventional polyvinyl chloride-based synthetic leathers. In terms of abrasion resistance and slipperiness, Examples 1 to 4 are comparable to Comparative Examples 5 and 6, which were polyurethane-based synthetic leathers. Furthermore, in Example 4, which used a brushed fabric, a pressability comparable to Comparative Examples 5 and 6 was observed.

Table 1: Examples and Comparative Examples

The present invention can be used, for example, in car seats.

REFERENCE SIGNS LIST 1: Synthetic leather 2: Resin layer 3: Adhesive layer 4: Fabric layer 5: Main body 6: Surface 10: Shaping device 11: Heater 12: Roll 13: Irregularities 20: Second semi-finished product

Claims (5)

The present invention includes a resin layer, a fabric layer including a material, and an adhesive layer that bonds the resin layer and the fabric layer,
the resin layer has a main body portion containing polyvinyl chloride resin as a main component , and a surface portion containing polycarbonate resin and silicone resin and containing polycarbonate resin or silicone resin as a main component ;
The synthetic leather has a main body portion that is in contact with the adhesive layer on one side and in contact with the surface portion on the other side. 2. The synthetic leather according to claim 1, wherein the fabric has a basis weight of 150 g/m2 or more and 300 g/ ^m2 or ^less . The synthetic leather according to claim 1 or 2, wherein the fabric is brushed. The present invention includes a resin layer, a fabric layer including a material, and an adhesive layer that bonds the resin layer and the fabric layer,
A method for producing synthetic leather, the resin layer having a main body portion containing polyvinyl chloride resin as a main component and a surface portion containing polycarbonate resin and silicone resin and containing polycarbonate resin or silicone resin as a main component,
forming the body portion;
forming the adhesive layer on one surface side of the main body;
bonding the fabric layer to the adhesive layer;
and forming the surface portion on the other side of the main body portion. The manufacturing method according to claim 4, further comprising a step of adsorbing the surface portion to the outer peripheral surface of a support having an uneven outer peripheral surface and a negative pressure on the inside, thereby forming the resin layer.

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