JPH0849173A - Production of skin material - Google Patents

Abstract

PURPOSE:To provide a method for production of skin material, capable of putting a skin layer on the right side of a base material and conducting adhesion and fixation between both the layers in a state in which a hygroscopic powder layer is sandwiched between the skin layer and the right side of the base material without reducing the hygroscopic activity of the hygroscopic powder by utilizing the adhesive force of a gel-state water-insoluble cellulose itself. CONSTITUTION:This method for production of skin material is carried out by applying a water-insoluble cellulose powder 2 to the right side of a hygroscopic base 1, subsequently spraying an alkaline solvent thereon to gel the water- insoluble cellulose powder, then putting a skin layer 3 through this gelled water- insoluble cellulose on the surface side of the base, bonding and fixing the skin layer thereto. The skin layer is composed of a moisture-permeable resin. In addition, a moisture-permeable resin is applied to the molding surface of a mold in lamination of the skin layer on the right side of the base and the skin layer is put on the right side of the base in a state in which the resin is in a semisolid state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION This invention relates to a method for manufacturing a skin material,
In particular, it relates to a method for manufacturing a skin material having hygroscopicity.

[0002]

2. Description of the Related Art In recent years, it has been considered to give a high-class feeling to various interior materials such as seats and interior trims of vehicles such as automobiles by devising various skin materials for covering the surfaces thereof. And as a part of that, there is known one in which the hygroscopicity of the skin material is enhanced to obtain a high-class feeling. As a method of further improving the hygroscopicity of this skin material, a sheet-like material having hygroscopicity is used as a base material of the skin material, and when the surface side of this base material is covered with a skin layer, the hygroscopicity is applied to the base material surface side. A method of increasing the hygroscopicity on the surface side of the base material by interposing the powder contained therein has been considered.

For example, in Japanese Patent Laid-Open No. 3-45784,
For example, when covering the surface side of a base material made of a non-woven fabric with a skin layer, a mixed resin liquid obtained by mixing hygroscopic silk powder with a synthetic resin liquid is applied to the surface of the base material (non-woven fabric). Is formed on the surface of the base material, or a resin film is formed using a mixed resin liquid obtained by mixing silk powder with a synthetic resin liquid, and the resin film is adhered to the base material to form a skin layer. Is disclosed. Thus, conventionally, a powder having hygroscopicity (hygroscopic powder)
When intervening on the surface side of the base material, it is common to use a mixed resin solution containing hygroscopic powder, and laminate and fix the skin layer on the surface side of the base material by the adhesive force of the resin solution. .

[0004]

However, when the mixed resin liquid is used in this way, the surface of the hygroscopic powder is wholly or partially covered with the synthetic resin as an adhesive (binder). Therefore, there is a problem in that the hygroscopic effect of the hygroscopic powder is hindered, and the hygroscopicity of the skin material cannot be sufficiently enhanced. In the case where the layer containing hygroscopic powder (hygroscopic powder layer) itself is a skin layer, as in the production method shown in the above-mentioned conventional publication, a separately prepared skin layer is a hygroscopic powder. Compared to stacking on the surface side of the layer,
There is also a problem that the strength of the skin layer is reduced.

By the way, various hygroscopic powders have been put into practical use, but among them, it is known that the water-insoluble cellulose powder can be dissolved in an alkaline solvent. And the applicant of the present application, as a result of earnest research,
When an alkaline solvent is applied to the non-water-soluble cellulose powder to gel it, the powder layer is effectively adhered and fixed to the substrate surface side by the adhesive force (adhesive force) of the non-water-soluble cellulose itself in the gel state. It was also found that a skin layer separately prepared can be laminated on the surface side of the substrate through the gelled non-water-soluble cellulose powder layer, and can be adhered and fixed without trouble.

Therefore, the present invention focuses on the fact that the water-insoluble cellulose in the gelled state itself has an adhesive force when the water-insoluble cellulose is in a gelled state, and by utilizing this adhesive force, A method for producing a skin material capable of adhering and fixing a skin layer by laminating a skin layer on the base material surface side without interfering with the hygroscopic effect of the hygroscopic powder in a state where the hygroscopic powder layer is interposed on the base material surface side. The main purpose is to provide.

[0007]

Therefore, in the invention according to claim 1 of the present application (hereinafter referred to as the first invention), a water-insoluble cellulose powder is contained on the surface side of a substrate having hygroscopicity. After that, an alkaline solvent is sprinkled on the surface side of the base material to gel the water-insoluble cellulose powder, and thereafter, a skin layer is formed on the surface side of the base material via the gelled water-insoluble cellulose. It is made to be laminated and fixed by adhesion.

The invention according to claim 2 of the present application (hereinafter,
The second invention) is characterized in that, in the first invention, the skin layer is formed of a resin having moisture permeability.

The invention according to claim 3 of the present application (hereinafter,
In a third invention), in the first invention, the skin layer is formed of a non-moisture permeable resin, and the skin layer is laminated on the surface side of the base material and fixed by adhesion, The layer is characterized by being perforated.

The invention according to claim 4 of the present application
(Hereinafter, referred to as a fourth invention), in the above-mentioned first invention, when the skin layer is laminated on the front surface side of the substrate, the material resin for forming the skin layer is formed along the molding surface of the mold. A resin film is formed and the resin film is laminated on the front surface side of the substrate.

Further, the invention according to claim 5 of the present application
(Hereinafter, referred to as a fifth invention), in the fourth invention, when the skin layer is laminated on the front surface side of the base material, a resin having moisture permeability is applied to the molding surface of the mold to form the molding surface. Is formed on the surface side of the base material when the resin coating film is in a semi-solidified state.

The invention according to claim 6 of the present application
(Hereinafter, referred to as a sixth invention), in the fourth invention, when the skin layer is laminated on the front surface side of the base material, a non-moisture permeable resin is sprinkled on the molding surface of the mold, To soften the resin to form a resin coating along the molding surface,
The resin film in the softened state is laminated on the front surface side of the base material.

[0013]

According to the first invention of the present application, the water-insoluble cellulose powder contained on the surface side of the substrate having hygroscopicity is gelled with an alkaline solvent, and the gelled water-insoluble Since the skin layer is laminated on the surface side of the base material via the cellulose, the skin layer can be effectively adhered and fixed to the surface side of the base material by the adhesive force of the gelled non-water-soluble cellulose itself. That is, since it is possible to impart an adhesive effect to the hygroscopic agent itself, the surface of the hygroscopic powder is an adhesive (binder), as in the case of using a mixed resin liquid of hygroscopic powder and synthetic resin in the past. It will not be covered and hinder its hygroscopic effect. As a result, it is not necessary to use an adhesive when laminating and adhering the skin layer on the surface side of the base material, and furthermore, the hygroscopicity of the surface material of the base material surface can be significantly improved. Further, unlike the case where the hygroscopic powder layer itself is used as the skin layer, there is no fear that the strength of the skin layer will decrease.

Further, according to the second invention of the present application, basically, the same effect as that of the first invention can be obtained. Moreover, since the above-mentioned skin layer is formed of a resin having moisture permeability, the hygroscopic powder layer on the back surface side of the skin layer and the hygroscopicity of the base material can be sufficiently exerted, and the hygroscopic property of the skin material. Can be further enhanced.

Further, according to the third invention of the present application, basically, the same effect as that of the first invention can be obtained. Moreover, since a skin layer is laminated on the surface side of the base material and adhered and fixed, the skin layer is perforated, so that the skin layer is formed of a non-moisture permeable resin. However, the hygroscopic powder layer on the back surface side of the skin layer and the substrate can fully exhibit the hygroscopicity, and the hygroscopicity of the skin material can be further enhanced.

Further, according to the fourth invention of the present application,
Basically, the same effect as that of the first invention can be obtained. Moreover, when the skin layer is laminated on the front surface side of the base material, a resin coating is formed along the molding surface of the mold by the material resin for forming the skin layer, and the resin coating is formed on the base material. Since it was made to be laminated on the surface side of
Mold formation can be applied to the formation of the skin layer, and a stronger skin layer can be obtained.

Further, according to the fifth invention of the present application,
Basically, the same effect as that of the above-mentioned fourth invention can be obtained. In particular, when laminating the skin layer on the surface side of the substrate, the resin having moisture permeability is applied to the molding surface of the mold to form a resin coating along the molding surface, and the resin coating is semi-solidified. Since the base material is laminated on the front surface side of the base material in the state, the mold molding can be applied to the formation of the moisture-permeable skin layer.

Further, according to the sixth invention of the present application,
Basically, the same effect as that of the above-mentioned fourth invention can be obtained. In particular, when laminating the skin layer on the surface side of the base material, a non-moisture permeable resin is sprayed on the molding surface of the mold, and the non-moisture permeable resin is softened to form a resin coating along the molding surface. Since the resin coating in the softened state is laminated on the front surface side of the base material, the die molding can be applied to the formation of the moisture impermeable skin layer.

[0019]

Embodiments of the method of the present invention will be described in detail below with reference to the accompanying drawings. First, the first embodiment will be described. As shown in FIG. 1, first, a base material 1 made of, for example, a non-woven fabric is placed on the workbench A as the hygroscopic base material described in the claims of the present application. In addition, as the base material having the hygroscopic property, a raised cloth or the like may be used.
The thickness of the base material 1 is about 2 to 3 mm.

Then, as shown in FIG. 2, for example, a spray 11 for powder is used to spray and spray a water-insoluble cellulose powder on the surface side of the substrate 1. This water-insoluble cellulose is obtained by substituting H (hydrogen) or Ca (calcium) for the carboxymethyl group of carboxymethyl cellulose instead of Na (sodium), and has hygroscopicity. In the present embodiment, the particle size of this water-insoluble cellulose powder (hygroscopic powder) is, for example, about 100 μm.
It was about degree. The particle size is preferably about 100 μm or less. Also, spray this with spray 11.
The thickness of the hygroscopic powder layer 2 obtained by spraying is, for example, 0.
It was 2-1 mm. The thickness is better as it is thicker, and it is desirable that the thickness is dispersed as evenly as possible on the surface side of the substrate 1. The method of incorporating the hygroscopic powder on the surface side of the base material 1 is not limited to spraying by the spray 11, and other methods such as a manual method or another mechanical means may be used. May be.

As shown in FIG. 3, an appropriate amount of an alkaline solvent is sprayed on the surface side of the base material 1 on which the hygroscopic powder layer 2 is formed as described above, and the hygroscopic powder layer is formed. Gel 2 As for this gelled state,
In order to secure good compression characteristics as a skin material, it is desirable that each surface of each particle of the hygroscopic powder is dissolved to some extent and the core remains inside. Such a gelled state is obtained by appropriately controlling the thickness (that is, the amount of powder) of the hygroscopic powder layer 2 and the amount of the alkaline solvent sprayed, and depends on the elapsed time after the spraying and the like.

On the other hand, in this embodiment, the skin layer is formed by using a mold. That is, as shown in FIG. 4, a mold 13 for forming a skin layer is placed on a workbench B so that its mold surface 13a faces upward, and as a resin having moisture permeability (moisture permeable resin), for example, Using urethane resin,
A resin solution of this urethane resin is sprayed onto the mold surface 13a by a spray 14 to be applied. As a result, the skin layer 3 is formed along the mold surface 13a. This skin layer 3
The thickness is preferably 20 to 50 μm. If the skin layer 3 is too thick, the moisture permeability may be impaired, while if it is too thin, the strength of the skin layer 3 cannot be sufficiently secured.

Next, when the skin layer 3 is in a semi-solidified state, the hygroscopic powder layer 2 in a gelled state and in a state where the adhesive force (adhesive force) is increased is set to the lower side, that is, The base material 1 is superposed on the skin layer 3 on the mold surface 13a of the mold 13 so that the hygroscopic powder layer 2 adheres to the skin layer 3. Then, as shown in FIG. 5, the mold 13 is set in the heat dryer 15 in this state and heat-dried at a predetermined temperature for a predetermined time. The drying temperature and time differ depending on the size of the hygroscopic powder material and the moisture-permeable resin material or the skin material as the skin layer 3, and in the present embodiment, the drying temperature was 140 to 150 ° C. At this time, more preferably, for example, a flat plate-like weight 16 is placed on the upper side of the base material 1 so that the hygroscopic powder layer 2 and the skin layer 3 are more firmly adhered to each other.

As a result, as shown in FIG. 6, the skin material 5 was obtained in which the skin layer 3 was laminated and fixed by adhesion with the hygroscopic powder layer 2 interposed on the surface side of the substrate 1. in this case,
Since the skin layer 3 is adhered and fixed to the surface side of the substrate 1 by the adhesive force of the gelled hygroscopic powder layer 2 (non-water-soluble cellulose) itself, the hygroscopic effect of the hygroscopic powder layer 2 is not hindered. Absent.

As described above, according to the present embodiment, after the water-insoluble cellulose powder contained on the surface side of the substrate 1 having hygroscopicity is gelled with the alkaline solvent,
Through the gelled water-insoluble cellulose, the substrate 1
Since the skin layer 3 is laminated on the surface side of the, the skin layer 3 is effectively adhered and fixed to the surface side of the substrate 1 by the adhesive force of the gelled water-insoluble cellulose (hygroscopic powder layer 2) itself. be able to. That is, since the adhesive effect can be imparted to the hygroscopic agent 2 itself, the surface of the hygroscopic powder is adhesive (binder) as in the case where the mixed resin liquid of hygroscopic powder and synthetic resin is conventionally used. It is no longer covered by and does not interfere with its hygroscopic effect. As a result, when the skin layer 3 is laminated on the front surface side of the base material 1 and adhered and fixed, the skin material 5
The hygroscopicity of the surface of the base material can be significantly increased, and it is not necessary to use another adhesive. Further, unlike the case where the hygroscopic powder layer itself is used as the skin layer, there is no fear that the strength of the skin layer will decrease.

Further, since the skin layer 3 is formed of a resin having moisture permeability, the hygroscopic powder layer 2 and the base material 1 on the back surface side of the skin layer 3 can sufficiently exhibit the hygroscopicity, The hygroscopicity of the skin material 5 can be further enhanced.

Further, when the skin layer 3 is laminated on the front surface side of the substrate 1, the moisture-permeable resin is applied to the mold surface 13a of the mold 13, and the moisture-permeable resin is semi-solidified. Since it is laminated on the front surface side of the base material 1 when it becomes, it is possible to apply mold molding to the formation of the skin layer 3, and it is possible to obtain a stronger skin layer 3.

Next, a second embodiment of the method of the present invention will be described. In this second example, a non-moisture permeable resin is used for the skin layer, a hygroscopic powder layer (non-water-soluble cellulose) is formed on the substrate surface side, and the hygroscopic powder layer is formed with an alkaline solvent. The steps up to gelation are the same as in the first embodiment described above (see FIGS. 1 to 3). In the following description, the same components as those in the first embodiment are designated by the same reference numerals, and further description will be omitted. In this embodiment,
The skin layer is formed of a non-moisture permeable resin such as a thermoplastic polyamide resin. For this reason, as shown in FIG. 7, the mold 26 is heated by the heater 27, and, for example, a polyamide resin powder is sprayed and sprayed onto the mold surface 26a of the mold 26 heated to a predetermined temperature using the spray 28. . The sprayed / sprayed polyamide resin powder is warmed and softened on the mold surface 26a to form a film (skin layer 23) along the mold surface 26a. As the non-moisture permeable resin,
Other than the above polyamide resin, for example, vinyl chloride, polypropylene, or the like can be used. The particle size of the resin powder when spraying / spraying with the spray 28 is, for example, about 1
It was set to about 50 μm. In this case, it is not necessary to limit the increase in the thickness of the skin layer 23 in order to secure the moisture permeability unlike the case of the first embodiment.

Next, as in the case of the first embodiment, when the skin layer 23 is in a sufficiently softened state, it is in a gelled state and the adhesive force (adhesive force) is increased. With the hygroscopic powder layer 2 on the lower side, that is, this hygroscopic powder layer 2
So that the base material 1 adheres to the skin layer 23.
It is superposed on the skin layer 23 on the mold surface 26a. And
As shown in FIG. 8, the cooler 29 together with the mold 26 in this state.
Then, the mold 26 is placed on the cooling table 29a, and more preferably, for example, a flat plate-like weight 16 is placed on the upper side of the base material 1 so that the hygroscopic powder layer 2 and the skin layer 23 are separated from each other. Pressurize so that it can adhere more firmly. Then, the mold 26 is cooled by the cooling table 29a to solidify the skin layer 23. As a result, a skin material 25 (see FIG. 9) was obtained in which the moisture impermeable skin layer 23 was laminated and adhered and fixed with the hygroscopic powder layer 2 interposed on the surface side of the substrate 1.

Thereafter, as shown in FIG. 10, the mold 26 is taken out of the cooler 29, and the skin material 25 is removed from the mold 2.
6 is released from the mold 6 and placed on the workbench A so that the skin layer 23 faces upward. Then, on the upper side of the skin layer 23,
A pin-equipped mold 30 having a large number of pins 30a of a predetermined size (diameter, length, etc.) attached to one side is set, and the skin material 25 is pressed from the skin layer 23 side by the pin-equipped mold 30.

As a result, as shown in FIG. 11, the skin layer 2
A large number of holes 23a (vent holes) are formed in 3 corresponding to the pins 30a. The hygroscopic powder layer 22 and the substrate 1 on the back surface side of the skin layer 23 perform a hygroscopic action through the large number of holes 23a.

As described above, according to this embodiment, basically the same effect as that of the above-mentioned first embodiment can be obtained, and in particular, the skin layer 23 is provided on the front surface side of the base material 1. Since the skin layer 23 is perforated after being laminated and adhered and fixed, the hygroscopic powder on the back surface side of the skin layer 23 is formed even when the skin layer 23 is formed of a non-moisture permeable resin. The hygroscopicity of the layer 2 and the base material 1 can be sufficiently exhibited, and the hygroscopicity of the skin material 25 can be enhanced.

When the skin layer 23 is laminated on the front surface side of the base material 1, a non-moisture permeable resin is applied to the mold surface 2 of the mold 26.
After spraying on 6a, it was softened to form a resin coating 23 (skin layer) along the mold surface 26a, and the skin layer 23 in the softened state was laminated on the surface side of the substrate 1. Thereby, the mold molding can be applied to the formation of the moisture impermeable skin layer 23, and a stronger skin layer 23 can be obtained.

In each of the above-mentioned embodiments, the skin layers 3 and 23 are formed by molding, but the present invention is
The method for forming the skin layer is not limited to this method. For example, a sheet material or a film material having a predetermined thickness is prepared using a resin material for forming the skin layer, and the sheet material or the film material is used. Hygroscopic powder layer on the skin layer
By applying the required thermal treatment or pressure treatment to the surface side of (non-water-soluble cellulose), the skin layer was laminated and adhered and fixed with the hygroscopic powder layer interposed on the surface side. It is also possible to obtain a skin material.

Next, still another embodiment will be described in which a thermocompression bonding film is used for laminating and adhering a moisture absorption layer between the skin layer and the substrate. In the present embodiment, first, as shown in FIG. 12, a skin layer 43 formed in advance into a film having a predetermined thickness is placed on a workbench A so that its back side faces upward, for example, in a slightly wet state. Place
The hygroscopic powder is sprayed / sprayed on the back surface side of the skin layer 43 using a spray 49. As this hygroscopic powder,
For example, collagen, carboxymethyl cellulose, polyglutamic acid, chitin, chitosan and the like can be used. Further, as the film forming the skin layer 43, a film having air permeability or moisture permeability is more preferably used.

On the upper side of the hygroscopic powder layer 42 (first hygroscopic powder layer) thus formed on the back surface side of the skin layer 43,
As shown in FIG. 13, the thermocompression bonding film 44 is laminated, and the hygroscopic powder is sprayed and sprayed on the upper side of the thermocompression bonding film 44 to form the second hygroscopic powder layer 45. still,
As the thermocompression bonding film 44, one having air permeability or moisture permeability is used. Next, as shown in FIG. 14, a base material 41 made of, for example, a non-woven fabric is laminated on the upper side of the second hygroscopic powder layer 45, and the laminate 40 formed in this way is heated from the skin layer 43 side to the heater. Heat at 48 to warm.

Then, a flat plate-shaped press tool 47 having a heater (not shown) therein is pressed against the upper side of the base material 41 to press the laminated body 40. As a result, by the action of the thermocompression bonding film 44, the first hygroscopic powder layer 42 and the skin layer 4 on the surface side (lower side in FIG. 14) of the film 44.
3, and the second hygroscopic powder layer 45 and the base material 41 on the back surface side (upper side in FIG. 14) of the thermocompression bonding film 44 are firmly adhered to each other. That is, as shown in FIG. 15, the skin layer 4 is sequentially arranged from the surface side (upper side in FIG. 15).
3, first moisture absorption layer 42 ', thermocompression bonding film 44, second moisture absorption layer 4
The skin material 40 in which 5'and the base material 41 are laminated is obtained.

The present invention is not limited to the above-mentioned embodiments, and within the scope of the gist of the present invention,
It goes without saying that various improvements and design changes are possible.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a base material of a skin material according to a first embodiment of the present invention.

FIG. 2 is an explanatory view showing a spraying process of hygroscopic powder in the method for manufacturing a skin material according to the first embodiment.

FIG. 3 is an explanatory diagram showing a step of spraying an alkaline solvent in the above manufacturing method.

FIG. 4 is an explanatory view showing a molding process of a skin layer with a mold in the above manufacturing method.

FIG. 5 is an explanatory view showing a step of forming a skin material in the above manufacturing method.

FIG. 6 is an explanatory cross-sectional view showing the structure of a skin material obtained by the above manufacturing method.

FIG. 7 is an explanatory diagram showing a molding step of a skin layer with a mold in the manufacturing method according to the second embodiment of the present invention.

FIG. 8 is an explanatory diagram showing a forming process of the skin material in the manufacturing method according to the second embodiment.

FIG. 9 is an explanatory cross-sectional view showing the structure of the skin material obtained in the molding step in the manufacturing method according to the second example.

FIG. 10 is a cross-sectional explanatory view showing the boring process for the skin layer in the manufacturing method according to the second embodiment.

FIG. 11 is a cross-sectional explanatory view showing the structure of a skin material obtained by the manufacturing method according to the second embodiment.

FIG. 12 is an explanatory diagram showing a step of forming a first hygroscopic powder layer in a manufacturing method according to still another example.

FIG. 13 is an explanatory diagram showing a step of forming a second hygroscopic powder layer in a manufacturing method according to still another example.

FIG. 14 is an explanatory view showing a pressure molding step of a skin material in a manufacturing method according to still another embodiment.

FIG. 15 is a cross-sectional explanatory view showing the structure of a skin material obtained by a manufacturing method according to still another example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Base material 2 ... Hygroscopic powder layer 3 ... Skin layer 5,25 ... Skin material 13,26 ... Mold 13a, 26a ... Mold surface 23 ... Skin layer (non-moisture permeable) 23a ... Hole

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification number Internal reference number FI Technical display location D06N 3/02 DAE // B29K 101: 00 B29L 9:00 (72) Inventor Hirofumi Umeda Hiroshima Prefecture Aki 3-1, Shinchi, Fuchu-cho, Gunma Mazda Co., Ltd. (72) Yutaka Fujii, 3-1, Shinchi, Fuchu-cho, Aki-gun, Hiroshima Prefecture (72) Inventor, Ichiro Masamori 3 Shinchi, Fuchu-cho, Aki-gun, Hiroshima Prefecture No. 1 in Mazda Motor Corporation

Claims (6)

[Claims] 1. A water-insoluble cellulose powder is contained on the surface side of a substrate having hygroscopicity, and then an alkaline solvent is sprinkled on the surface side of the substrate to gelate the water-insoluble cellulose powder, Then, a method for producing a skin material, which comprises laminating a skin layer on the front surface side of the substrate through the gelled water-insoluble cellulose and adhering and fixing the skin layer. 2. The method for manufacturing a skin material according to claim 1, wherein the skin layer is formed of a resin having a moisture permeability. 3. The skin layer is formed of a non-moisture permeable resin, and the skin layer is laminated on the surface side of the base material and adhered and fixed, and then the skin layer is perforated. The method for producing a skin material according to claim 1. 4. When laminating the skin layer on the front surface side of a base material, a resin coating is formed along the molding surface of a mold with a material resin for forming the skin layer, and the resin coating is formed on the base material. The method for producing a skin material according to claim 1, wherein the skin material is laminated on the front surface side. 5. When laminating the skin layer on the front surface side of a base material, a resin having moisture permeability is applied to a molding surface of a mold to form a resin coating along the molding surface, and the resin coating is The method for producing a skin material according to claim 4, wherein the surface material is laminated on the front surface side of the base material in the semi-solidified state. 6. When laminating the skin layer on the front surface side of a base material, a non-moisture permeable resin is sprinkled on the molding surface of a mold to soften the non-moisture permeable resin to form a resin along the molding surface. The method for producing a skin material according to claim 4, wherein a coating film is formed, and the resin coating film in the softened state is laminated on the front surface side of the base material.