KR20200041618A - Skin layer for an artificial leather and method for manufacturing the artificial leather - Google Patents

Abstract

The present invention relates to a skin layer for artificial leather and a method for manufacturing artificial leather and, more specifically, to a composition of inorganic pigment included in the skin layer. According to the present invention, the skin layer for artificial leather comprises PVC resin, 84 to 90 parts per hundred rubber (phr) of a plasticizer, and 0.3 phr or more of the inorganic pigment. Moreover, the method comprises the following steps: kneading a composition for forming a skin layer and forming the skin layer; laminating fabric and the skin layer at a temperature of 150 to 180°C; and pressing the laminated fabric and skin layer. Accordingly, the present invention provides an advantage of forming a transparent skin layer while preventing efflorescence.

Description

Skin layer for artificial leather and manufacturing method of artificial leather {SKIN LAYER FOR AN ARTIFICIAL LEATHER AND METHOD FOR MANUFACTURING THE ARTIFICIAL LEATHER}

The present invention relates to a skin layer for artificial leather and a method for manufacturing artificial leather, and more particularly, to an inorganic pigment contained in a skin layer.

Artificial leather, which is used as a vehicle interior material, is a material that consumers directly contact and touch when driving, and the color and design of artificial leather is becoming a standard for vehicle selection for consumers who want to purchase a vehicle.

PVC artificial leather is used as artificial leather for automobile interior materials. PVC artificial leather is prepared by sheeting a composition for forming a skin layer containing a PVC resin using a calendar method and then combining it with a fiber layer. According to this process, the composition for forming the skin layer By adding a pigment, the color of artificial leather can be realized, or a simple design can be realized on the surface of artificial leather by performing a perforation method on artificial leather.

On the other hand, the fiber fabric used for artificial leather is produced by weaving / knitting polyester yarn. In the case of the fiber fabric, the pattern and color of the yarn can be adjusted in various ways, so various designs can be realized as the fabric fabric itself. However, in order to expose the design of the fiber fabric to the surface of the artificial leather, it is necessary to exclude the pigment contained in the skin layer.

An object of the present invention is to make a transparent skin layer and transmit a pattern of a fiber fabric.

In order to achieve the above object, the present invention may include a PVC resin, a plasticizer of 84 to 90 phr, and an inorganic pigment of 0.3 phr or more.

Preferably, an inorganic pigment of 0.3 phr or more and less than 0.7 phr may be included.

Preferably, the average thickness of the skin layer may be 370 μm or less.

Preferably, the plasticizer is diisodecyl phthalate, dipropyl-heptyl phthalate, trioctyl trimellitate, diisononyl phthalate or diisononyl adipate ( Diisononyl adipate).

Preferably, 2 to 8 phr of a heat stabilizer may be further included.

Preferably, 0.2 to 0.6 phr may further include an ultraviolet absorber.

The present invention comprises the steps of forming a skin layer after kneading the composition for forming a skin layer, combining the fiber fabric and the skin layer at a temperature of 150 to 180 ° C. and rolling the fabric fabric and skin layer into rolls. , The composition for forming a skin layer may include a PVC resin, a plasticizer of 84 to 90 phr, and an inorganic pigment of 0.3 phr or more.

Preferably, the content of the inorganic pigment may be 0.3 phr or more and less than 0.7 phr.

Preferably, the average thickness of the composite and compressed skin layer may be 370 μm or less.

Preferably, the composition for forming a skin layer may include 2 to 8 phr of heat-resistant stabilizer or 0.2 to 0.6 phr of ultraviolet absorber.

Preferably, the kneading temperature of the composition for forming a skin layer may be 120 to 160 ° C.

Preferably, the roll pressing temperature may be 70 to 230 ° C.

The present invention can manufacture a transparent skin layer and can transmit the pattern of the fiber fabric.

1 is a photograph taken with a general digital camera of artificial leather containing 86 phr of plasticizer (DIDP, DIDP: Diisodecyl phthalate) and 8 phr of inorganic pigment.
FIG. 2 is a photograph taken with a general digital camera of artificial leather containing 86 phr of a plasticizer (using DIDP) but excluding inorganic pigments to secure transparency.
Figure 3 (a) shows a PVC resin is not added an inorganic pigment, Figure 3 (b) shows a PVC resin when an external stimulus is applied.
Fig. 4 (a) shows the PVC resin before adding the inorganic pigment, and Fig. 4 (b) shows the PVC resin after adding the inorganic pigment. Figure 4 (c) shows a PVC resin and an inorganic pigment when an external stimulus is applied.
5 is a photograph taken in Example 1 with a general digital camera.
FIG. 6 is a photograph of Example 2 taken with a general digital camera.
7 is a photograph of Example 3 taken with a general digital camera.
8 is a photograph of Comparative Example 1 taken with a general digital camera.
9 is a photograph of Comparative Example 2 taken with a general digital camera.
10 is a photograph of Comparative Example 3 taken with a general digital camera.
11 is a photograph of Comparative Example 4 taken with a general digital camera.
12 is a photograph of Comparative Example 5 taken with a general digital camera.
13 is a photograph of Comparative Example 6 taken with a general digital camera.
14 is a photograph of Comparative Example 7 taken with a general digital camera.
Fig. 15 (a) is a photograph of the artificial leather of Example 4 taken with an optical microscope (150x), and Fig. 15 (b) is a photograph of Example 4 taken with a general digital camera.
FIG. 16 (a) is a photograph of the artificial leather of Example 5 taken with an optical microscope (150x), and FIG. 16 (b) is a photograph of Example 5 taken with a general digital camera.
FIG. 17 (a) is a photograph of the artificial leather of Comparative Example 8 taken with an optical microscope (150x), and FIG. 17 (b) is a photograph of Comparative Example 8 taken with a general digital camera.
FIG. 18 (a) is a photograph of the artificial leather of Comparative Example 9 taken with an optical microscope (150x), and FIG. 18 (b) is a photograph of Comparative Example 9 taken with a general digital camera.
19 is a flow chart showing a method of manufacturing the inventor artificial leather.
20 is a photograph of Example 6 subjected to a bending evaluation through a roll pressing process.
21 is a photograph when the comparative example 10 without undergoing a roll pressing process is subjected to bending evaluation.

Hereinafter, the present invention will be described in detail. However, the present invention is not limited or limited by the exemplary embodiments, and the objects and effects of the present invention can be naturally understood or more apparent by the following description, and the objects and effects of the present invention are described only by the following description. It is not limited. In addition, in the description of the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted.

1 is a picture taken with a general digital camera of artificial leather containing 86 phr of plasticizer (DIDP, DIDP: Diisodecyl phthalate) and 8 phr of inorganic pigment. Referring to FIG. 1, it can be confirmed that it is necessary to exclude the inorganic pigment included in the skin layer because the pattern of the fiber fabric is not observed on the surface of the artificial leather.

FIG. 2 is a photograph taken with a general digital camera of synthetic leather containing 86 phr of a plasticizer (using DIDP), but excluding inorganic pigments to form a transparent skin layer. Referring to Figure 2, it can be seen that the pattern of the fiber fabric is observed diagonally in Figure 2 to ensure a transparent skin layer. However, unlike the artificial leather of FIG. 1 containing the inorganic pigment, the artificial leather of FIG. 2 not containing the inorganic pigment may observe the parts 21, 22, and 23 where whitening occurs around the sewing thread.

The whitening phenomenon is a phenomenon in which the PVC resin is crystallized by an external impact, and the surface of the artificial leather looks white. Figure 3 (a) shows a PVC resin is not added an inorganic pigment, Figure 3 (b) shows a PVC resin when an external stimulus is applied. 3 (a) and 3 (b), the PVC resin 31 is crystallized by an external stimulus, for example, stretching and impact by a sewing needle, and whitening occurs.

The present invention relates to a skin layer included in artificial leather, and may include a PVC resin, a plasticizer of 84 to 90 phr, and an inorganic pigment of 0.3 phr or more. In the present invention, the inorganic pigment is added to prevent whitening, and an inorganic pigment having the same or similar color to the main color of the fiber fabric may be added.

The mechanism of preventing the whitening phenomenon due to the addition of a trace amount of the inorganic pigment can be described through the schematic diagram of FIG. 4. Fig. 4 (a) shows the PVC resin before adding the inorganic pigment, and Fig. 4 (b) shows the PVC resin after adding the inorganic pigment. Figure 4 (c) shows a PVC resin and an inorganic pigment when an external stimulus is applied. Referring to Figure 4 (a) to 4 (c), even if an external stimulus such as stretching and impact of the sewing needle is given, the inorganic pigment 42 is located within and outside the chain of the PVC resin 41, PVC Crystallization of the resin 41 can be prevented. Accordingly, the whitening phenomenon can be prevented.

When adding an inorganic pigment of less than 0.3phr, whitening may occur because the amount of the inorganic pigment added is not sufficient to be uniformly distributed to the peripheral portion of the PVC resin. It is preferable to set the maximum content of the inorganic pigment in consideration of whether the pattern of the fiber fabric is permeable within a range in which no whitening occurs.

Hereinafter, the occurrence of whitening phenomenon according to the content of the inorganic pigment will be described through Examples and Comparative Examples. However, the examples and comparative examples described below are only for specifically illustrating or describing the present invention, and the present invention should not be limited thereto.

Example  1 to 3

0.3 phr of inorganic pigment (manufacturer: Ilsam Co., Ltd., product name: SVM BLACK 720B) was added to the skin layer, and the fiber fabric used a fiber fabric with alternating patterns of white and black on the surface. . Examples 2 and 3 were prepared in the same manner as in Example 1, except that 0.5 phr and 0.7 phr of the inorganic pigment were included in the skin layer, respectively.

Comparative example  1 to 3

An inorganic pigment was not added to Comparative Example 1, and 0.1 phr of inorganic pigment was added to Comparative Example 2, and 0.2 phr of inorganic pigment was added to Comparative Example 3, and was prepared in the same manner as in Example 1.

5 to 7 are photographs of Examples 1 to 3 taken with a general digital camera, respectively. 5 to 7, it can be seen that the whitening phenomenon did not occur in the area around the sewing thread, and more specifically, in the area where the sewing thread is sewn as an area subjected to external impact by sewing.

Whether or not whitening occurs is a whiter area that is brighter than the white pattern of the fiber fabric, or a white area where the black pattern of the fiber fabric is located, or white, but is not recognized as a pattern of the fabric fabric. It can be seen through whether or not a white area has occurred.

8 is a photograph of Comparative Example 1 taken with a general digital camera. Referring to FIG. 8, it can be seen that the whitening phenomenon occurred repeatedly in the stitched area. Referring to one region 81 and 82 in which the whitening phenomenon appeared in Comparative Example 1, it is possible to observe a white region brighter than a white pattern of the fiber fabric and a white region not recognized as a white pattern of the fiber fabric.

9 is a photograph of Comparative Example 2 taken with a general digital camera. Referring to FIG. 9, it can be seen that the whitening phenomenon repeatedly occurred in the area where the sewing thread is sewn as in FIG. 8. Referring to one region 91 and 92 in which the whitening phenomenon occurred in Comparative Example 2, it is possible to observe a brighter white region than the white pattern of the fiber fabric and a white region not recognized as a white pattern of the fiber fabric.

10 is a photograph of Comparative Example 3 taken with a general digital camera. Referring to FIG. 10, it can be seen that the whitening phenomenon repeatedly occurred in the area where the sewing thread was sewn, as shown in FIG. 9. Referring to one region 91 and 92 in which the whitening phenomenon appeared in Comparative Example 3, it is possible to observe a white region that is brighter than a white pattern of the fiber fabric and a white region that is not recognized as a white pattern of the fiber fabric. However, since the whitening phenomenon of Comparative Example 3 is less white than the whitening phenomenon of Comparative Example 2, it can be seen that the whitening phenomenon was slightly improved according to the addition of the inorganic pigment.

division Inorganic pigments
Content (phr) brightness Pattern transmission
Whether Whitening phenomenon
Occurrence Example 1 0.3 24.1 ○ X Example 2 0.5 23.5 △ X Example 3 0.7 23.3 X X Comparative Example 1 0 26.4 ○ ○ Comparative Example 2 0.1 24.5 ○ ○ Comparative Example 3 0.2 24.2 ○ △

Table 1 is a table summarizing the brightness of Examples 1 to 3 and Comparative Examples 1 to 3 with different content of inorganic pigments, whether or not the fiber fabric is permeable to a pattern, and whether artificial leather is whitened. Referring to Table 1, in the case of Examples 1 to 3, the whitening phenomenon does not occur, but as the content of the inorganic pigment increases, the color of the inorganic pigment becomes darker and the pattern of the fiber fabric is not gradually transmitted. On the other hand, in the case of Comparative Examples 1 to 3, the pattern of the fiber fabric is transmitted by the inclusion of a smaller amount of the inorganic pigment than in Example 1 through which the pattern of the fiber fabric is transmitted, but whitening occurs.

Therefore, 0.3 phr or more of inorganic pigment may be added to prevent whitening, and more preferably 0.3 phr or more and 0.7 phr of inorganic pigment may be added. In order to transmit the pattern of the fiber fabric, 0.3 phr or more and less than 0.7 phr, more preferably 0.3 phr or more and 0.5 phr or less of inorganic pigment may be added.

Comparative Examples 4 to 7 are measures considered to prevent whitening, respectively, when the plasticizer content is increased, when the plasticizer type is changed, when soybean oil is mixed, and when a shock absorber is added. Since the whitening phenomenon is caused by an external impact, it was designed as a means to alleviate the external impact, but the whitening phenomenon occurred. The details are as follows.

Comparative example  4

Comparative Example 4 was a comparative example in which the plasticizer content was increased from 86 phr to 96 phr, and the plasticizer was used diisodecyl phthalate (DIDP). FIG. 11 is a photograph of Comparative Example 4 taken with a general digital camera. Referring to FIG. 11, it can be seen that a whitening phenomenon was repeatedly generated in an area in which a sewing thread was sewn. Referring to one region (111, 112) in which the whitening phenomenon appeared in Comparative Example 4, a white region not recognized as a white pattern of the fiber fabric can be observed at a position where the black pattern of the fiber fabric is located. Through this, even if the plasticizer content is increased to increase the ductility of PVC, it can be seen that whitening occurs due to external impact.

Comparative example  5

Comparative Example 5 is a comparative example in which the plasticizer content is maintained at 86 phr, but the type of plasticizer is changed from diisodecyl phthalate to DEHCH (product name). FIG. 12 is a photograph of Comparative Example 5 taken with a general digital camera. Referring to FIG. 12, it can be seen that a whitening phenomenon was repeatedly generated in an area in which a sewing thread was sewn. Referring to one region 121 in which the whitening phenomenon occurred in Comparative Example 5, it is possible to observe a white region not recognized as a white pattern of the fiber fabric at the position where the black pattern of the fiber fabric is located. Through this, it can be seen that even if the type of the plasticizer is changed, a whitening phenomenon occurs due to an external impact, and the prevention of the whitening phenomenon and the type of the plasticizer are irrelevant.

Comparative example  6

Comparative Example 6 is a comparative example in which 86 phr of a plasticizer and 4 phr of soybean oil are mixed. Soybean oil is a plasticizer made from soybeans, which can increase the ductility of PVC using soybean oil. FIG. 13 is a photograph of Comparative Example 6 taken with a general digital camera. Referring to FIG. 13, it can be seen that whitening occurs repeatedly in the stitched area. Referring to one region 131 in which the whitening phenomenon occurred in Comparative Example 6, a white region not recognized as a white pattern of the fiber fabric can be observed at a position where the black pattern of the fiber fabric is located. Through this, even if soybean oil is mixed to increase the ductility of PVC, it can be seen that whitening occurs due to external impact.

Comparative example  7

Comparative Example 7 is a comparative example in which 2phr of MBS (Methacrylate Butadiene Stylene) series shock absorber is added. FIG. 14 is a photograph of Comparative Example 7 taken with a general digital camera. Referring to FIG. 14, it can be seen that a whitening phenomenon was repeatedly generated in an area in which a sewing thread is sewn. Referring to one region 141 in which the whitening phenomenon occurred in Comparative Example 7, it is possible to observe a white region distinguished from the white pattern of the fiber fabric at the position where the black pattern of the fiber fabric is located. Through this, even if a separate shock absorber is added to alleviate the external shock, it can be seen that whitening occurs due to the external shock.

Polyurethane (PU) -based resins may also be used in place of the PVC resins included in the present invention. However, the present invention is not limited thereto, and any number that can be used for artificial leather for auto interior materials can be used by replacing or mixing the PVC resin of the present invention.

The plasticizer used in the present invention is diisodecyl phthalate, dipropyl-heptyl phthalate, trioctyl trimellitate, diisononyl phthalate or diisononyl phthalate or diisononyl adipyl It may be one or more selected from pate (Diisononyl adipate).

However, the present invention is not limited thereto, and may include all plasticizers that can be mixed in the PVC resin. Plasticizers having a molecular weight smaller than diisodecyl phthalate tend to have weaker thermal properties, and therefore are not preferably used. And the content of the plasticizer is related to the viscosity and flowability of the plasticizer, it is preferable to use a plasticizer of 84 to 90phr to improve the workability.

The average thickness of the skin layer for artificial leather of the present invention may be 370 μm or less. If it exceeds 370 μm, it is because the number of particles of the inorganic pigment per unit volume of the skin layer is small, so that crystallization of the PVC resin cannot be prevented. At this time, the average thickness of the skin layer means an arithmetic average value of the vertical distance from one surface of the skin layer not overlapping with the fiber fabric to the other surface of the skin layer combined with the fiber fabric.

Fig. 15 (a) is a photograph of the artificial leather of Example 4 taken with an optical microscope, and Fig. 15 (b) is a photograph of Example 4 taken with a general digital camera. 15 (a) and 15 (b), it can be seen that the average thickness of the skin layer of Example 4 was 260.2 μm, and no whitening occurred on the surface of the artificial leather.

FIG. 16 (a) is a photograph of the artificial leather of Example 5 taken with an optical microscope, and FIG. 16 (b) is a photograph of Example 5 taken of a general digital camera. 16 (a) and 16 (b), it can be seen that the average thickness of the skin layer of Example 5 was 367.3 μm, and no whitening occurred on the surface of the artificial leather.

FIG. 17 (a) is a photograph of the artificial leather of Comparative Example 8 taken with an optical microscope, and FIG. 17 (b) is a photograph of Comparative Example 8 taken with a general digital camera. Referring to FIGS. 17 (a) and 17 (b), the average thickness of the skin layer of Comparative Example 8 was 384.3 μm, and whitening phenomenon 171 was observed in the portion where the sewing thread was sewn.

FIG. 18 (a) is a photograph of the artificial leather of Comparative Example 9 taken with an optical microscope, and FIG. 18 (b) is a photograph of Comparative Example 9 taken with a general digital camera. Referring to FIGS. 18 (a) and 18 (b), the average thickness of the skin layer of Comparative Example 9 was 415 μm, and whitening phenomenon 181 was observed in the portion where the sewing thread was sewn.

In summary, by controlling the average thickness of the skin layer containing the inorganic pigment to 370 μm or less, whitening of the artificial leather can be prevented.

2 to 8 phr of a heat stabilizer may be included in the present invention. The heat stabilizer is included in the composition for forming a skin layer to increase the stability to heat. More specifically, stability is given at a high processing temperature and discoloration due to light and heat does not occur even in the finished product. Since the skin layer of the present invention is a transparent film layer, discoloration of the fiber fabric or the skin layer can be easily observed, so it is preferable to add a heat stabilizer at 2 to 8 phr to prevent discoloration.

0.2 to 0.6 phr of the ultraviolet absorber may be included in the present invention. The ultraviolet absorber absorbs the ultraviolet absorber and converts harmless thermal energy to block propagation of photolysis and prevent discoloration. It is preferable to add an ultraviolet absorber to the skin layer layer of the present inventor, but 0.2 to 0.6 phr to prevent discoloration due to over-addition of the ultraviolet absorber.

19 is a flow chart showing a method of manufacturing the inventor artificial leather. Referring to FIG. 19, the present invention comprises the steps of forming a skin layer after kneading the composition for forming a skin layer as a method of manufacturing artificial leather (S101), and combining the fiber fabric and the skin layer at a temperature of 150 to 180 ° C ( S102) and the step of squeezing the fabric layer and the skin layer (S103) may be included, the composition for forming the skin layer may include a PVC resin, a plasticizer of 84 to 90phr, an inorganic pigment of 0.3phr or more, and a composite And the compressed skin layer may have an average thickness of 370 μm or less.

In order to prevent whitening, 0.3 phr or more and 0.7 phr or less of inorganic pigment may be included, and to pass the pattern of the fiber fabric, 0.3 phr or more and less than 0.7 phr of inorganic pigment, more preferably 0.3 phr or more and 0.5 phr or less of inorganic pigment Can be included.

The fabric fabric and skin layer fabrication may be by a calendar method, and the fabrication temperature may be 150 to 180 ° C. The fabrication temperature should be controlled within a range in which workability improvement, discoloration, and modification of the preparation properties do not occur, and the composition temperature of the composition for forming a skin layer of the present invention is preferably 150 to 180 ° C.

The composition for forming a skin layer may include 2 to 8 phr of a heat stabilizer or 0.2 to 0.6 phr of an ultraviolet absorber. The reason for the addition and the composition range are as described above.

The kneading temperature of the composition for forming the skin layer may be 120 to 160 ° C, and the compression temperature of the fabric layer and the skin layer may be 70 to 230 ° C. The kneading temperature and the compression temperature should be controlled in a range in which workability is improved, discoloration, and modification of the properties of the preparation does not occur, and the kneading temperature and the compression temperature, respectively, are 120 to 160 ° C and 150 in the composition of the composition for forming a skin layer of the present invention. It is preferably from 180 ° C.

The fabric fibers and skin layers can be compressed by roll compression. According to the roll pressing, peeling strength between the skin layer and the fiber fabric is increased, and whitening can be prevented by external stimulation. This relates to the position and distribution of the inorganic pigments in and out of the chain of the PVC resin as described above.

FIG. 20 is a photograph of Example 6 subjected to a bending evaluation through a roll pressing process, and FIG. 21 is a photograph of bending example of Comparative Example 10 without a roll pressing process. Table 2 shows the peel strength of Example 6 and Comparative Example 10.

division Example 6 Comparative Example 10 Peel strength 2.5kgf 1.5kgf

20, 21, and Table 2, the peel strength of Example 6 after the roll pressing process was higher and the whitening phenomenon 211 occurred in Comparative Example 10 without the roll pressing process. Through this, it can be seen that it is preferable to go through a roll pressing process in order to prevent the occurrence of whitening.

A surface coating layer may be formed on the skin layer of the present invention, and may be formed by evaporating an aqueous solvent after gravure coating of a polycarbonate-based polyurethane aqueous surface treatment agent on the skin layer.

It is preferable that the flame retardant is not included in the composition for forming a skin layer of the present invention. This is because the flame retardant generally has an opaque white color, and may be a barrier to forming a transparent skin layer. Therefore, rather than adding a flame retardant to the composition for forming a skin layer, it is preferable to coat the bottom surface of the fiber fabric with a gravure method.

Although the present invention has been described in detail through exemplary embodiments above, those skilled in the art to which the present invention pertains understand that various modifications are possible within the limits of the embodiments described above without departing from the scope of the present invention. will be. Therefore, the scope of rights of the present invention should not be limited to the described embodiments, and should be determined not only by the claims to be described later, but also by all modified or modified forms derived from the claims and equivalent concepts.

21, 22, 23: The part where whitening occurred
31: PVC resin
41: PVC resin
42: inorganic pigment
81, 82: a region where whitening occurred in Comparative Example 1
91, 92: one area where whitening occurred in Comparative Example 2
101, 102: one area where whitening occurred in Comparative Example 3
111, 112: one area where whitening occurred in Comparative Example 4
121: One area where whitening occurred in Comparative Example 5
131: One area where whitening occurred in Comparative Example 6
141: one area where whitening occurred in Comparative Example 7
171: whitening phenomenon
181: whitening phenomenon
S101: Step of kneading and forming a skin layer of the composition for forming a skin layer
S102: the fabrication step of the fabric fabric and skin layer
S103: Compression step of fiber fabric and skin layer
211: whitening phenomenon

Claims (12)

Skin layer for artificial leather, characterized in that it comprises a PVC resin, a plasticizer of 84 to 90 phr, and an inorganic pigment of 0.3 phr or more.
According to claim 1,
Skin layer for artificial leather, characterized in that it comprises an inorganic pigment of 0.3phr or more and less than 0.7phr.
The method according to claim 1 or 2,
Skin layer for artificial leather, characterized in that the average thickness is 370μm or less.
According to claim 1,
The plasticizer is diisodecyl phthalate, dipropyl-heptyl phthalate, trioctyl trimellitate, diisononyl phthalate or diisononyl adipate ) Skin layer for artificial leather, characterized in that at least one selected from.
According to claim 1,
Skin layer for artificial leather, characterized in that it further comprises a heat resistant stabilizer of 2 to 8phr.
According to claim 1,
Skin layer for artificial leather, characterized in that it further comprises an ultraviolet absorber of 0.2 to 0.6phr.
Forming a skin layer after kneading the composition for forming a skin layer;
Fabricating the fiber fabric and the skin layer at a temperature of 150 to 180 ° C; And
Including; the step of rolling the fabric layer and the skin layer is rolled;
The composition for forming the skin layer comprises a PVC resin, a plasticizer of 84 to 90 phr, and an inorganic pigment of 0.3 phr or more.
The method of claim 7,
The content of the inorganic pigment is 0.3phr or more than less than 0.7phr artificial leather manufacturing method.
The method of claim 7,
The method of manufacturing the artificial leather, characterized in that the average thickness of the skin layer is compressed and compressed 370μm or less.
The method of claim 7,
The composition for forming the skin layer comprises a heat-resistant stabilizer of 2 to 8 phr or a UV absorber of 0.2 to 0.6 phr.
The method of claim 7,
The method for producing artificial leather, characterized in that the kneading temperature of the composition for forming a skin layer is 120 to 160 ° C.
The method of claim 7,
Roll compression temperature is 70 to 230 ℃ manufacturing method of artificial leather, characterized in that.

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