JP7067030B2 - Skin material and interior materials for vehicles using it - Google Patents

Description

The present invention relates to a skin material and an interior material for a vehicle having a skin layer formed by using the skin material.

Conventionally, the skin material constituting the skin layer such as an interior material for a vehicle has been enhanced in design by imparting an embossed pattern, an uneven shape, or the like to the surface. As a method of imparting an embossed pattern to the skin material, for example, after heating and softening the material of the skin material having a smooth surface, vacuum forming is performed using a mold engraved with the embossed pattern, and the embossed pattern on the surface of the mold is formed at the same time as molding. (For example, see Patent Document 1). In the molding method described in Patent Document 1, a cushioning material is placed on the embossed pattern portion on the surface of the female mold, and the heat-softened skin material is pressed by the male mold to transfer the embossed pattern. Will be done. As a result, the portion on which the cushioning material is placed is particularly pressure-molded, and even an embossed pattern with a large height difference is satisfactorily transferred.

Japanese Unexamined Patent Publication No. 62-130824

However, in the molding method described in Patent Document 1, since the processing is performed from the surface side of the skin material, a constant graphic pattern appears on the surface regardless of the change in the shape of the skin material. That is, since the processed surface becomes the design surface as it is, the graphic pattern is similarly visually recognized regardless of whether the skin material is flat or curved, and the design due to the difference in the three-dimensional shape of the skin material is used. It is difficult to make a difference.

For example, as shown in FIG. 8, when a plurality of rectangular groove portions 90 g having the same shape are formed on a flat plate-shaped skin material 9 made of a sheet-shaped skin material 90, the skin material 9 is curved to form a curved surface. When formed, the shape is deformed so that the opening side is widened to the groove portions 91 g and 92 g due to the curvature. Specifically, the side surface 91f of the groove portion 91g is slightly inclined so as to be widened on the opening side with respect to the side surface 90f of the groove portion 90g, that is, on the side of the edge portion 91e with respect to the edge portion 90e. Further, the side surface 92f of the groove portion 92g is inclined so as to be further widened on the opening side, that is, on the side of the edge portion 92e. In other words, the side surface 90f of the groove 90g is formed substantially perpendicular to the bottom, but the side surface 91f of the groove 91a is deformed so that the angle with respect to the bottom is slightly obtuse due to the curvature. Further, the side surface 92f of the groove portion 92a is deformed so as to have a more obtuse angle. However, even when the curved surface region is compared with the plane region, the shape of the groove portion does not change significantly, and the design is visually recognized as the same. It is considered that this is because the surface on which the groove is formed is directly visible.

The present invention has been made in view of the above circumstances, and the present invention is made by using an epidermis material whose design is changed on the front surface side by a three-dimensional shape change provided on the back surface side of the epidermis material and the epidermis material. It is an object of the present invention to provide an interior material for a vehicle having a formed skin layer.

The present invention is as follows.
1. 1. A skin material comprising a base material sheet constituting the front surface layer and a plurality of processed material sheets laminated on the base material sheet to form the back surface layer.
The processed material sheets are laminated so as to be separated from each other, and the peripheral edges of the adjacent processed material sheets form a design surface corresponding to the shape of the peripheral edges on the surface of the base material sheet. Characteristic skin material.
2. 2. The base material sheet is made of fabric, natural leather, synthetic leather, or a thermoplastic resin, and the processed material sheet is made of natural leather, synthetic leather, or a thermoplastic resin. The skin material described in.
3. 3. The thermoplastic resin sheet is further laminated between the base material sheet and the processed material sheet. Or 2. The skin material described in.
4. A skin material comprising a base material sheet constituting the front surface layer and a processed material sheet laminated on the base material sheet to form the back surface layer.
The processed material sheet has a recess formed toward the base sheet, and the peripheral edge portion of the recess on the base material sheet side corresponds to the shape of the peripheral edge portion on the surface of the base material sheet. A skin material characterized by having a design surface formed.
5. The base material sheet is made of fabric, natural leather, synthetic leather, or a thermoplastic resin, and the processed material sheet is made of a thermoplastic resin. The skin material described in.
6. The above 1. ~ 5. A vehicle interior material comprising a skin layer formed by using the skin material according to any one of the above items.

The skin material of the present invention is a skin material including a base material sheet constituting a front surface layer and a plurality of processed material sheets laminated on the base material sheet to form a back surface layer, and is an adjacent processed material sheet. Each peripheral edge forms a design surface corresponding to the shape of the peripheral edge on the surface of the base sheet. As a result, the design changes due to the three-dimensional shape change of the skin material. Further, depending on the degree of deformation of the skin material, the design surface can be made to feel a gradation.
When the base material sheet is made of fabric, natural leather, synthetic leather, or thermoplastic resin, and the processed material sheet is made of natural leather, synthetic leather, or thermoplastic resin, the shape of the peripheral portion of the processed material sheet. It can be a clear design surface corresponding to.
Further, when the thermoplastic resin sheet is further laminated between the base sheet and the processed material sheet, the design formed on the surface of the base sheet is impressed by the intervention of the thermoplastic resin sheet. Can be different.

The other skin material of the present invention is a skin material including a base material sheet constituting the front surface layer and a processed material sheet laminated on the base material sheet to form the back surface layer, and is formed on the processed material sheet. A design surface corresponding to the shape of the peripheral portion is formed on the surface of the base material sheet by the peripheral edge portion of the concave portion on the base material sheet side. As a result, the design changes due to the three-dimensional shape change of the skin material. Further, depending on the degree of deformation of the skin material, the design surface can be made to feel a gradation.
Further, when the base material sheet is made of fabric, natural leather, synthetic leather, or a thermoplastic resin and the processed material sheet is made of a thermoplastic resin, a predetermined recess can be easily formed in the processed material sheet. A clear design surface corresponding to the shape of the peripheral portion of the processed material sheet can be obtained.

The vehicle interior material of the present invention includes a skin layer formed by using the skin materials of the present invention and other inventions. Therefore, depending on the type and portion of the interior material, it is possible to obtain an interior material having a design having a clearer or slightly paler feeling and a slightly different impression.

It is a schematic cross-sectional view of an example of a skin material. It is a schematic cross-sectional view of another example of a skin material. It is a schematic cross-sectional view of still another example of a skin material. It is a schematic cross-sectional view of still another example of a skin material. It is a schematic cross-sectional view for demonstrating how the design surface of the skin material of FIG. 1 is formed. It is a schematic cross-sectional view for demonstrating the state when the skin material of FIG. 1 formed a curved surface. It is a perspective view which looked at the skin material from the design surface side. It is a schematic cross-sectional view for demonstrating the state when the conventional skin material pressed from the surface side formed a curved surface.

Hereinafter, the present invention will be described in detail with reference to the drawings.
The matters shown here are exemplary and are intended to illustrate embodiments of the present invention. It is described for the purpose of providing what seems to be the most effective and effortlessly understandable explanation of the principles and conceptual features of the present invention. In this respect, it is not intended to provide structural details of the invention beyond what is necessary for a fundamental understanding of the invention. The description combined with the drawings will clarify to those skilled in the art how some embodiments of the present invention are actually embodied.

[1] Skin Material The skin material 1 of the present invention (see FIG. 1) includes a base material sheet 10 constituting a front surface layer, a plurality of processed material sheets 20 laminated on the base material sheet 10 and forming a back surface layer, and a plurality of processed material sheets 20. To prepare for.
The plurality of processed material sheets 20 are laminated so as to be separated from each other, and there is a separated portion 20 g between each of the adjacent processed material sheets 20, and the base of the side surface 20f of each processed material sheet 20, particularly the side surface 20f. The edge portion 20e (the peripheral edge portion of the processed material sheet 20 is formed by the side surface 20f and the edge portion 20e), which is a contact point with the lower surface of the material sheet 10, forms a separation portion 20g on the surface of the base material sheet 10. The corresponding design surface is formed.

Another skin material 2 of the present invention (see FIG. 2) includes a base material sheet 10 constituting a front surface layer and a processed material sheet 30 laminated on the base material sheet 10 to form a back surface layer.
A recess 30g is formed in the processed material sheet 30 toward the base sheet 10, and an edge portion 30e located at a corner on the lower surface side of the base sheet 10 on the side surface 30f of each recess 30g (this edge portion). 30e corresponds to the peripheral edge of the recess 30g on the base sheet 10 side), so that a design surface corresponding to the shape of the recess 30g is formed on the surface of the substrate sheet 10.

(1) Base material sheet The base material sheet 10 is a sheet constituting the surface layer having the design surface of the skin materials 1 and 2. It is possible to have a design formed by laminating the processed material sheets 20 and 30 without imparting a design to the surface of the base sheet 10, but the design is previously provided on the surface of the base sheet 10. In addition to the design formed by laminating the processed material sheets 20 and 30, the skin materials 1 and 2 having higher designability can be used. The material of the base sheet 10 is not particularly limited, and fabric, natural leather, synthetic leather, thermoplastic resin and the like can be used. Further, the thickness of the base sheet 10 is not particularly limited, and can be appropriately set according to the purpose, application, and the like.

The fibers constituting the fabric (fabric, textile, knitted fabric) include, for example, natural fibers such as cotton, linen, wool and silk, recycled fibers such as cupra and rayon, semi-synthetic fibers such as acetate, polyester fibers and acrylic fibers. Examples thereof include synthetic resin fibers such as fibers, polyamide fibers and polyolefin fibers, composite fibers using these fibers, and mixed cotton.

As the fabric, a woven fabric is preferable. If it is a woven fabric, it has a high degree of freedom in changing the color tone and the pattern, and it is possible to express a delicate pattern. In addition, unevenness due to the woven structure can be imparted, and a high-quality design surface can be obtained. The unevenness due to the weaving structure can be imparted by using, for example, a high elastic yarn and a low elastic yarn as at least one of the warp and weft yarn. Further, as the low elastic yarn, a yarn having a darker color than the high elastic yarn or a yarn having a higher glossiness than the high elastic yarn can be used to further enhance the unevenness.

Natural leather is not particularly limited, but for example, mammals such as cows, pigs, horses, deer, sheep, goats, kangaroos, peccaries, capiparas, and tegu, reptiles such as crocodiles, snakes, lizards, and sea turtles, and birds such as ostriches. Examples include those with peeled skin. Of these, cow, pig, and sheep leathers are preferred, and cow leathers are more preferred. The leather may be one kind or a combination of two or more kinds. Natural leather has a high-class feel, is resistant to deterioration, and has excellent durability. In addition, natural leather has the advantage that its color and texture change as it is used for a long time, resulting in a deep taste. Further, the leather may be subjected to, for example, tanning, enamel, oil, wax or the like, water repellent, waterproof, embossed or the like. Further, for example, coloring processing such as white, red, black, brown, blue, and yellow may be applied.

Synthetic leather can also give a sense of quality comparable to natural leather. This synthetic leather is not particularly limited, but usually, a woven fabric, a knitted fabric, a non-woven fabric, etc. made of polyamide fiber, polyurethane fiber, polyolefin fiber, blended fiber of polyolefin fiber and cotton, etc. is used as a base cloth, and polyurethane is used on the surface of the base cloth. After applying a synthetic resin such as, a modified nylon, a polyurethane resin, a polyacrylic resin, or the like is further applied as a finishing layer, and a template paper can be used to obtain a synthetic leather having an appearance similar to that of a natural leather. Further, if necessary, the surface may be embossed, textured or the like.

The thermoplastic resin is not particularly limited as long as it is a resin that can be molded into a sheet by a known molding method, and a wide variety of resins can be used. For example, a polyacrylic resin, a polyurethane resin, a polyolefin resin and the like can be used. Can be mentioned. Of these, a polyacrylic resin and a polyurethane resin are preferable from the viewpoints of ease of processing, flexibility of the skin material, and the like. Further, in the case of a thermoplastic resin, an uneven pattern can be easily applied to the surface, and the design can be enhanced. In order to form the uneven pattern, a manufacturing method including a step of contacting the drawing roll and the base sheet 10 with a laminating embossing process of heating and pressurizing can be applied. Further, a colorant may be added to the thermoplastic resin. By blending a colorant in the base sheet 10, a desired hue can be imparted. Examples of the colorant include dyes, pigments, and metal powders such as pearl particles and aluminum powder. Among them, pigments are preferable from the viewpoint of durability, weather resistance and the like.

(2) Processed material sheet The processed material sheets 20 and 30 are sheets laminated on the base material sheet 10 to form a back surface layer. In the processed material sheet 20, a plurality of sheets are arranged apart from each other and laminated. On the other hand, the processed material sheet 30 is laminated as one sheet, and a recess (groove portion) 30 g is formed toward the base sheet 10.

The material of the processed material sheet 20 is not particularly limited, and like the material of the base material sheet 10, fabric, natural leather, synthetic leather, thermoplastic resin and the like can be used. Further, the processed material sheet 20 may be made of the same material as the base material sheet 10 or may be different. On the other hand, since the processed material sheet 30 is usually formed by a method such as heating by a pressing die or pressurization, a thermoplastic resin is used. Further, the processed material sheet 30 may be the same type of thermoplastic resin as the base material sheet 10, or may be a different type of thermoplastic resin.

Each shape of the processed material sheet 20 and the separation distance between the adjacent processed material sheets 20 shall be a design surface having a design formed by the shape and the separation distance of the processed material sheet 20 on the surface of the base material sheet 10. Is not particularly limited as much as possible. Further, the thickness is not particularly limited, and it is sufficient that the surface of the base material sheet 10 can be a predetermined design surface. The shape of the processed material sheet 20 can be, for example, a square, a rectangle, a rhombus, or the like. Further, the separation distance between the adjacent processed material sheets 20 can be, for example, about 1 to 5 mm from the viewpoint of designability. Further, it is preferable that the separation distance does not differ greatly depending on the location, and it is more preferable that the separation distance is substantially the same. Further, the thickness of the processed material sheet 20 is not particularly limited, and can be, for example, about the same thickness as the base sheet 10.

The processed material sheet 30 is laminated as a single sheet, and a recess (groove portion) 30 g is formed toward the base sheet 10. The recess 30g is formed by laminating the processed material sheet 30 on the base material sheet 10 and then heating and pressurizing the processed material sheet 30. The planar shape of the recess 30 g is not particularly limited as long as the surface of the base sheet 10 can be a predetermined design surface. The planar shape of the recess 30 g can be, for example, a linear shape, a curved shape, a zigzag shape, or the like.

Further, the width of the recess 30 g can be about 1 to 5 mm in order to form a predetermined design surface, and it is preferable that the width does not differ significantly depending on the location, and it is more preferable that the recesses are substantially the same. Further, the recess 30g is usually formed by a method such as heating or pressurizing with a pressing die, but a thin layer of the processed material sheet 30 remains at the bottom of the recess 30g (see FIG. 2). Further, the thickness of the processed material sheet 30 is not particularly limited, and can be, for example, about the same thickness as the base sheet 10. Further, a resin foam such as a polyurethane resin foam can be used as the processed material sheet 30, and in this case, the processed material sheet 30 is often thicker than the base sheet 10.

Examples of the method of laminating the processed material sheets 20 and 30 on the back surface of the base material sheet 10 include hot pressing and bonding with an adhesive. In the case of hot pressing, depending on the material, the processed material sheets 20 and 30 can be directly bonded to the back surface of the base material sheet 10 and laminated. Further, using a hot melt film made of polyester, polyurethane, polyamide, polyethylene vinyl acetate copolymer, styrene-based thermoplastic elastomer, etc., a hot melt film is interposed between the base sheet 10 and the processed material sheets 20 and 30. It is also possible to heat the hot melt film to a temperature higher than the melting point and pressurize it for bonding. The heating temperature and pressure can be appropriately selected according to the hot melt film used for joining.

On the other hand, when an adhesive is used, the adhesive is applied to at least one of the back surface of the base sheet 10 and the front surfaces of the processed material sheets 20 and 30, and then the base sheet 10 and the processed material sheets 20 and 30 are laminated. Press, pressurize, and heat if necessary to bond. As a method of applying the adhesive, a general method such as a brush, a spray, or a roll coater can be appropriately adopted.

(3) Sheets other than the base material sheet and the processed material sheet The skin material 1 of the present invention and the other skin material 2 of the present invention are laminated with other sheets such as a thermoplastic resin sheet as appropriate according to the purpose and application. Can be in the form of The place where the other sheets are laminated is not particularly limited, and may be laminated between the base sheet 10 and the processed material sheet 20 (see the intervening sheet 40 in FIG. 3), or laminated on the back surface of the processed material sheet 20. May be (see additional sheet 40 in FIG. 4). The intervening sheet 40 and the additional sheet 40 may be laminated together, but usually it is not necessary and either one is laminated. The material, thickness, and the like of the other sheets are not particularly limited, and may be appropriately set in consideration of the workability, designability, flexibility, and the like of the skin materials 1 and 2.

As other sheets, soft sheets are often laminated, and the materials thereof are not particularly limited, but polyurethane foams, polystyrene foams, polypropylene foams, polyethylene terephthalate foams, phenol resin foams, and silicone resins are used. Examples thereof include resin foams such as foams, urea resin foams, and acrylic resin foams. The other sheets can be laminated in the same manner as the method of laminating the processed material sheets 20 and 30 on the back surface of the base sheet 10.

(3) Action and effect The action and effect of the skin material of the present invention will be described below, but the process of forming the design surface and the action and effect when the surface of the skin material forms a curved surface are also described in other inventions. The same is true.
In the skin material 1 of the present invention, as shown in FIG. 5A, the skin material 1 is laminated on the base material sheet 10 constituting the surface layer and the base material sheet 10 to form the back surface layer. And, the adjacent processed material sheets 20 are laminated so as to be separated from each other (see the separated portion 20 g).
FIG. 5A shows a state immediately after laminating the base material sheet 10 and the processed material sheet 20, and as shown in FIG. 5B, the base material sheet 10 is located above the separation portion 20g as time passes. Is a concave surface 10a recessed from the surface 10s.

Further, the base material sheet 10 is formed with a convex portion 10e corresponding to the edge portion 20e of the processed material sheet 20, and the convex portion 10e has a slightly rounded curved surface. As a result, a concave surface 10a and a convex portion 10e forming the contour thereof are formed on the surface of the base material sheet 10, and these are visually recognized as a pattern and become a design surface. The shape of the convex portion 10e and its vicinity is a shape that cannot be formed by pressing from the surface 10s side of the base sheet 10.

Further, as shown in FIG. 5C, when the skin material 1 is curved toward the processed material sheet 20, the base material sheet 10 at the upper part of the separation portion 20 g is slightly elongated, and the concave surface 11a and the lower portion thereof are slightly elongated. The thickness between the bottom surfaces 11b is slightly reduced, and the concave surface 11a and the convex portion 11e as shown in FIG. 5C are formed. The convex portion 11e has a more rounded and gentle curved surface as compared with the convex portion 10e. As a result, the surface of the base material sheet 10 has a shape in which the concave surface 11a and the convex portion 11e forming the contour thereof are formed on the base material surface 10s, which is more strongly recognized as a pattern and is clearer. It becomes a design side. As described above, the shape of the ridge portion 11e formed by the action of the edge portion 20e of the processed material sheet 20 due to the bending of the skin material 1 is peculiar to the skin material of the present invention.

Further, as shown in FIG. 5D, when the skin material 1 is further curved toward the processed material sheet 20, the base material sheet 10 on the upper part of the separation portion 20 g is further stretched, and the concave surface 12a and its concave surface 12a thereof. The thickness between the lower bottom surfaces 12b becomes smaller, and the concave surface 12a and the convex portion 12e as shown in FIG. 5D are formed. The convex portion 12e has a more rounded and gentle curved surface as compared with the convex portion 11e. As a result, the surface of the base material sheet 10 has a shape in which the concave surface 12a and the convex portion 12e forming the contour thereof are formed on the base material surface 10s. In this case, depending on the degree of curvature, the pattern may be visually recognized more strongly and the design surface may be clearer, the convex portion 12e may be slightly obscured, and a gradation effect may be produced.

The above-mentioned action and effect are examples, and differ depending on the combination of the material, thickness, and the like of the base sheet and the processed material sheet. For example, when the base material sheet is a soft material and the processed material sheet is a hard material, the effect of the edge of the processed material sheet becomes larger. On the other hand, when the base material sheet is a hard material and the processed material sheet is a soft material, the effect of the edge tends to be small.

[2] Interior Material for Vehicles The interior material for a vehicle of the present invention uses the skin material of the present invention and other skin materials of the present invention as a skin material laminated on a base material of an interior material for a vehicle. The interior materials for this vehicle are not particularly limited, for example, seat back, door trim, roof trim, floor trim, luggage trim, trunk trim, rear side trim, rear parcel shelf, instrument panel, package tray, pillar garnish, switch base, etc. Quarter panels, armrests, etc. may be mentioned. Further, on the curved surface portion of these vehicle interior materials, the action and effect as described in FIGS. 5 (c) and 5 (d) are exhibited.

As described above, the skin materials of the present invention and other inventions exhibit particularly excellent designability on curved surfaces. Therefore, in the case where the design of the curved surface is important, for example, the curved surface such as the seat back, the door trim, the roof trim, etc., the curved surface is particularly conspicuous among the interior materials, and the skin of the present invention and other inventions. The effect of using the material is great. For example, the seat back has a structure in which a back pad made of polyurethane foam, which is a cushion material, is placed on a back frame forming the skeleton, and the back pad is covered with a skin material. Since the surface shape changes from a flat surface to a curved surface from the front surface portion to the side surface portion of the backrest, the action and effect thereof are particularly remarkable when the skin material of the present invention and other inventions are used. To.

Hereinafter, the skin material of the present invention will be described in more detail with reference to Examples.
[Example 1]
As shown in FIG. 1, the skin material 1 of the first embodiment includes a base material sheet 10 constituting a front surface layer, and a plurality of processed material sheets 20 laminated on the base material sheet 10 to form a back surface layer. The base material sheet 10 is a sheet-shaped natural leather having a thickness of 1.2 mm. Further, the processed material sheet 20 is also a sheet-like natural leather having a thickness of 1.2 mm, which is substantially the same quality. The processed material sheets 20 are vertically and horizontally separated from each other by a predetermined dimension, and a separated portion 20 g is formed. The inner side surface 20f of the separated portion 20g is perpendicular to the surface of the base sheet 10s, and an edge portion 20e is formed at the upper end portion thereof.

The base sheet 10 and the processed material sheet 20 are joined by using an adhesive, and at the time of joining, the surface 10s of the base sheet 20 is a flat surface as shown in FIG. 5A, and the base sheet 20 is joined. The presence of the processed material sheet 20 could not be visually recognized from the side of. However, when observed after several hours, as shown in FIG. 5B, a concave flat surface 10a was visually recognized on the surface 10s of the base sheet 10 at the upper part of the separation portion 20g. Further, as shown in FIG. 7, when observed from the surface side of the base sheet 10, the concave flat surface 10a is visually recognized as a groove pattern in the vertical and horizontal directions, and a design surface corresponding to the groove pattern is formed on the surface 10s of the base sheet 10. rice field.

Further, when the skin material 1 is curved toward the processed material sheet 20 as shown in FIG. 6, in the flat portion, the base material sheet 10 above the separation portion 20 g has a concave surface recessed from the surface 10s thereof. 10a (and the convex portion 10e) was formed. On the other hand, in the portion where the skin material 1 is curved toward the processed material sheet 20, the concave surface 11a and the convex portion 11e are formed. The convex portion 11e had a more rounded and gentle curved surface as compared with the convex portion 10e.

Further, in the more curved portion, the concave surface 12a and the convex portion 12e are formed on the surface of the base material sheet 10, and the convex portion 12e is more rounded than the convex portion 11e. It was a gentle curved surface. That is, the concave plane and the ridges are curved more and more, and the concave plane and the convex portion form a smoother surface, and a gradation effect is also exhibited. Further, since the base material sheet 10 is made of natural leather, it has an excellent sense of quality and can form a slightly changing design surface.

[Example 2]
As shown in FIG. 2, the skin material 2 of the second embodiment includes a base material sheet 10 constituting a front surface layer and a processed material sheet 30 laminated on the base material sheet 10 to form a back surface layer. It is joined using an adhesive. The base material sheet 10 is a sheet-shaped natural leather having a thickness of 1.2 mm. On the other hand, the processed material sheet 30 is a foamed polyurethane sheet having a thickness of 10 mm. The processed material sheet 30 is formed with a groove portion 30g having a trapezoidal cross section in the vertical and horizontal directions. An edge portion 30e is formed at the upper end portion.

Further, the processed material sheet 30 of the skin material 2 is softer and thicker than the processed material sheet 10 of the skin material 1. Therefore, although the action and effect of the skin material 2 is substantially the same as that of the skin material 1, since the processed material sheet 30 is a soft material, the action and effect on the base material sheet 10 of the edge portion 30e is the case of the skin material 1. It is indirect as compared with the above, and the change in the surface due to the formation of the concave plane and the convex portion of the skin material 2 becomes small. As a result, a particularly gentle and soft design surface is formed, and it can be used as a more useful skin material depending on the purpose and application.

[Example 3]
As shown in FIG. 3, the skin material 3 of Example 3 comprises a base sheet 10 constituting a surface layer, a soft sheet 40 laminated on the base sheet 10, and a back surface layer laminated on the soft sheet 40. The processed material sheet 20 is provided, and these are joined to each other by using an adhesive. The base material sheet 10 and the processed material sheet 20 are sheet-shaped natural leather having a thickness of 1.2 mm, and the soft sheet 40 is a foamed polyurethane sheet having a thickness of 3 mm. Since the soft sheet 40 is interposed in the skin material 3, the action and effect of the processed material sheet 20 on the design of the base sheet 10 is indirect, and as a result, a smoother and softer design surface is formed. It can be a more useful skin material depending on the purpose and application.

[Example 4]
As shown in FIG. 4, the skin material 4 of the fourth embodiment is the base material sheet 10 constituting the front surface layer, the processed material sheet 20 laminated on the base material sheet 10 and forming the back surface layer, and the processed material sheet 20. A soft sheet 40 laminated on the opposite surface to the base sheet 10 is provided, and these are joined to each other by using an adhesive. That is, the skin material 4 is in a form in which the soft sheet 40 is further laminated on the back surface of the processed material sheet 20 of the skin material 1. The base material sheet 10 and the processed material sheet 20 are sheet-shaped natural leather having a thickness of 1.2 mm, and the soft sheet 40 is a foamed polyurethane sheet having a thickness of 3 mm. Since the skin material 4 has the same structure as the skin material 1, the same action and effect as that of the skin material 1 can be obtained, and by laminating the soft sheet 40, the skin material has a higher cushioning property. can do.

It should be noted that the above description is for the purpose of explanation only and is not construed as limiting the present invention. Although the present invention has been described with reference to typical embodiments, the wording used in the description and illustration of the invention is understood to be descriptive and exemplary rather than limiting wording. As detailed herein, modifications may be made within the scope of the appended claims without departing from the scope or spirit of the invention in its form. Although specific structures, materials and embodiments have been referred to herein in detail of the invention, it is not intended to limit the invention to the disclosures herein, rather the invention is claimed in the accompanying claims. It shall cover all functionally equivalent structures, methods and uses within the scope.

The skin material of the present invention can be used in various technical fields. Specifically, it can be suitably used in fields related to vehicle interior materials such as automobiles and railroad vehicles, interior materials such as aircraft, ships and buildings, and skin materials in various industries such as apparel.

1, 2, 3, 4; skin material,
10; Base sheet,
20, 30; processed material sheet,
20 g; separation part,
30 g; groove 40; soft sheet.

Claims (4)

A skin material comprising a base material sheet constituting the front surface layer and a plurality of processed material sheets laminated on the base material sheet to form the back surface layer.
The processed material sheets are laminated apart from each other, and a design surface corresponding to the shape of the edge portion constituting the peripheral portion is formed on the surface of the base material sheet by the peripheral edges of the adjacent processed material sheets. Has been
The base material sheet does not follow the inner surface of the separation portion formed between the adjacent processed material sheets.
The design surface is a curved surface of the base material sheet toward the surface layer side of the edge portion by an edge portion constituting the peripheral edge portion located on the base material sheet side of the processed material sheet forming the separation portion. A skin material having a convex portion protruding in a shape , whereby a concave surface is formed on the surface layer side of the separated portion of the base material sheet . The skin material according to claim 1, wherein the base material sheet is made of fabric, natural leather, synthetic leather, or a thermoplastic resin, and the processed material sheet is made of natural leather, synthetic leather, or a thermoplastic resin. The skin material according to claim 1 or 2, wherein a thermoplastic resin sheet is further laminated between the base material sheet and the processed material sheet. An interior material for a vehicle, which comprises a skin layer formed by using the skin material according to any one of claims 1 to 3.

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