Vehicle interior material

Abstract

To provide an interior material for a vehicle capable of restraining a temperature rise in the whole interior material including a base material even to any kind of skin material.SOLUTION: In the interior material for the vehicle provided with a base material 36 and a skin material 38, the base material 36 has a covered part 36A covered with the skin material 38 and an exposed part 36B not covered with the skin material 38, and the covered part 36A has an infrared absorptivity lower than that of the exposed part 36B. This configuration enables not only a rise in the temperature of the base member 36, but also a rise in the surface temperature of the covering material 38, to be suppressed.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to an interior material for a vehicle. [Background technology]

[0002] The covering material disclosed in Patent Document 1 below includes a heat-receiving layer provided on a substrate, a space-retaining layer formed on the heat-receiving layer, and a solar radiation-transmitting layer provided on the space-retaining layer. The solar radiation absorptance of at least the surface of the heat-receiving layer is 10% or more and less than 70%, and the solar radiation transmittance of the solar radiation-transmitting layer is 30% or more and less than 80%. In this covering material, sunlight entering the covering material from the solar radiation-transmitting layer is reflected by the surface of the heat-receiving layer and travels toward the back side of the solar radiation-transmitting layer, where it is reflected again by the solar radiation-transmitting layer and returned to the heat-receiving layer. The document states that because the incident sunlight is repeatedly reflected between the solar radiation-transmitting layer and the heat-receiving layer and travels through the space-retaining layer, a heat-collecting effect can be achieved even with a highly bright covering material. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2006-282052 Summary of the Invention [Problem to be solved by the invention]

[0004] Although the skin material disclosed in Patent Document 1 can reduce the temperature of the surface of the skin material, it is considered difficult to effectively reduce the temperature of the substrate itself located below the skin material due to the presence of a heat-receiving layer on the back side of the skin material, as disclosed in Table 1, etc., of Patent Document 1. Furthermore, the interior part (vehicle interior material) disclosed in Patent Document 1 has a problem in that the configuration of the skin material is limited, resulting in low freedom of design.

[0005] The present invention has been made in consideration of such circumstances, and has as its object to provide a vehicle interior material that can suppress temperature rise in the entire interior material, including the base material, regardless of the type of skin material used. [Means for solving the problem]

[0006] In order to solve the above problems, the vehicle interior material disclosed in the present application has the following configuration. (1) A vehicle interior material comprising a substrate and a skin material, the substrate has a covered portion covered with the skin material and an exposed portion not covered with the skin material, The covered portion has a lower infrared absorptance than the exposed portion.

[0007] Conventionally, vehicle interior materials used in locations exposed to sunlight through the window glass often use dark-colored surfaces (skins, resins, etc.) that are less likely to reflect visible light, in consideration of reflections on the window glass. However, dark-colored materials tend to be more likely to absorb infrared rays and store heat. In contrast, the vehicle interior material disclosed in the present application is configured such that a portion of the substrate, for example, a portion corresponding to a location that is more likely to be exposed to sunlight, is covered with a skin material, and the covering portion, which is part of the substrate, has a low infrared absorptance. With this configuration, even if a dark-colored material that is more likely to absorb heat is used as the skin material, the covering portion is less likely to store heat, making it possible to suppress not only an increase in the temperature of the substrate but also an increase in the surface temperature of the skin material.

[0008] In the vehicle interior material disclosed in the present application, means for reducing the infrared absorptance of the covering portion can be, for example, formed of a light-colored material such as white, or formed of a material with high light transmittance.

[0009] The vehicle interior material having the above-described configuration can be configured in the following various ways.

[0010] (2) The exposed portion is made of a resin containing carbon black, The vehicle interior material according to (1), wherein the covering portion is made of a resin that does not contain carbon black.

[0011] Resins containing carbon black tend to store heat, making the vehicle interior material disclosed in the present application suitable, and can effectively suppress heat storage in the covering portion and temperature rise on the surface of the skin.

[0012] (3) The vehicle interior material according to (1) or (2), wherein the base material is formed by integrally molding the covering portion and the exposed portion by two-color molding.

[0013] In the vehicle interior material of this configuration, the base material is integrally formed, and no work such as assembly is required, so the manufacturing process can be simplified.

[0014] (4) The vehicle interior material according to any one of (1) to (3), wherein the substrate is formed by foaming and curing a foamable resin.

[0015] In this vehicle interior material, the foamable resin can be a mixture of a thermoplastic resin such as polypropylene resin and a foaming agent. By using a substrate molded from this foamable resin, heat accumulation in the substrate can be more effectively suppressed, and the temperature rise on the surface of the skin can also be suppressed.

[0016] (5) The vehicle interior material according to any one of (1) to (4), wherein the skin material is made of a fabric having an ultrafine fiber layer in which ultrafine fibers having a single fiber diameter of 1 μm or more and 6 μm or less are arranged in a planarly dispersed state and have a reflectance of 85% or more in the near-infrared region.

[0017] The ultrafine fibers that make up the skin material of this vehicle interior material have a relatively small single fiber diameter of 1 μm or more and 6 μm or less. Fibers with a single fiber diameter within this range have excellent reflective performance in the near-infrared region. The ultrafine fiber layer of the skin material in this configuration has multiple ultrafine fibers arranged in a planar, dispersed state, and has a reflectance of 85% or more in the near-infrared region. Therefore, the vehicle interior material of this configuration has excellent heat-shielding performance in the skin material, which can further suppress heat accumulation in the substrate and more effectively suppress temperature increases on the skin material surface. The cross-sectional shape of the ultrafine fibers in this configuration is not limited to a circular cross section, but may be irregular, such as a polygonal cross section. In the case of fibers with irregular cross sections, the diameter of the circumscribed circle can be considered the single fiber diameter.

[0018] (6) The vehicle interior material according to (5), wherein the ultrafine fiber layer has an ultrafine fiber occupancy rate, which is the ratio of an area occupied by the ultrafine fibers in a cross section perpendicular to the direction in which the ultrafine fibers extend, of 9.9% or more.

[0019] In a vehicle interior material having this configuration, the ultrafine fiber occupancy rate in the ultrafine fiber layer of the skin material is 9.9% or more, resulting in a reflectance of 85% or more in the near-infrared region. Although an ultrafine fiber occupancy rate of 9.9% is a relatively small value, there are relatively many gaps around the ultrafine fibers with a single fiber diameter of 1 μm or more and 6 μm or less, and the ultrafine fiber layer is configured with a large number of ultrafine fibers densely arranged. With a vehicle interior material having this configuration, the skin material has excellent heat-shielding performance, effectively suppressing heat accumulation in the base material.

[0020] (7) The vehicle interior material is an instrument panel of a vehicle, The vehicle interior material according to any one of items (1) to (6), wherein the exposed portion is a portion along a boundary between the periphery of an air outlet of an air conditioner mounted in a vehicle and another panel member. [Effects of the Invention]

[0021] According to the present invention, it is possible to provide a vehicle interior material that can suppress a temperature rise in the entire interior material, including the substrate, for any type of skin material. [Brief explanation of the drawings]

[0022] [Figure 1] 1 is a perspective view showing the inside of a vehicle using the vehicle interior material of this embodiment. [Figure 2] 1 is a perspective view of a base material constituting a dashboard, which is a vehicle interior material according to an embodiment of the present invention; [Figure 3] Schematic cross-section of the dashboard [Figure 4] FIG. 1 is a plan view schematically showing an ultrafine fiber layer of a skin material. [Figure 5] FIG. 1 is a diagram showing a cross section of a main part of a skin material; [Figure 6] 5 is a cross-sectional perspective view of a composite fiber produced in the process of producing the ultrafine fiber layer shown in FIG. [Figure 7] FIG. 7 is a cross-sectional perspective view showing the state in which ultrafine fibers are extracted from the composite fiber shown in FIG. [Figure 8] A diagram showing the lamp irradiation test method [Figure 9] Table showing the test results of the lamp irradiation test DETAILED DESCRIPTION OF THE INVENTION

[0023] The vehicle interior material of this embodiment is, for example, a vehicle interior material used in a vehicle, and specifically, is used in an instrument panel 10 and a door trim 12 of a vehicle shown in FIG. 1. The instrument panel 10 (hereinafter sometimes referred to as "instrument panel 10") is Sunlight shines on the door trim 12 through the windshield 14, and on the door trim 12 through the door glass 16. The vehicle interior material of this embodiment is suitable for use in such locations exposed to sunlight.

[0024] The instrument panel 10 includes an instrument panel 20 that displays instruments, a monitor 21 that displays a car navigation system, etc., a steering wheel 22, and air conditioner outlets 23 at both ends in the vehicle width direction, with the design surfaces surrounding these components formed by a first dashboard 24 and a second dashboard 25. The first dashboard 24 and the second dashboard 25 are used as the vehicle interior material of this embodiment.

[0025] The first dashboard 24 forms the interior design surface below the instrument panel 20, and as shown in Fig. 2, has a main body 30 that forms the interior design surface, an upper bracket 31 that protrudes upward from the main body 30, and a lower bracket 32 ​​that protrudes downward from the main body 30. The upper bracket 31 is a portion to which the above-mentioned instrument panel 20 is attached and which is connected to the second dashboard 25. On the other hand, the lower bracket 32 ​​is a portion to which the monitor 21 is attached and through which the steering shaft connected to the handle 22 is inserted. In addition, the main body 30 is formed with the above-mentioned air conditioner outlet 23.

[0026] The first dashboard 24 is made up of a plate-shaped base material 36 and a skin material 38 attached with an adhesive or the like to a portion of the interior side of the base material 36. In other words, the entire portion of the base material 36 that forms the main body 30, which is the interior design surface, is not covered with the skin material 38, and the surface of the base material 36 forms part of the interior design surface. With this configuration, the portion of the base material 36 that forms the main body 30 of the first dashboard 24 has a covered portion 36A that is covered with the skin material 38 and an exposed portion 36B that is not covered with the skin material 38, as shown in FIG. 3 .

[0027] The base material 36 is molded from a synthetic resin material such as polypropylene, ABS resin, or polyurethane. However, the exposed portion 36B is black because the synthetic resin material contains carbon black, whereas the covered portion 36A is white because it does not contain carbon black. In other words, the covered portion 36A has a lower infrared absorption rate than the exposed portion 36B. The upper bracket portion 31 and the lower bracket portion 32 are molded from the same synthetic resin material containing carbon black as the exposed portion 36B. Furthermore, the covered portion 36A and exposed portion 36B of the base material 36 are integrally molded by two-color molding.

[0028] Furthermore, the synthetic resin material of the covering portion 36A and the synthetic resin material of the exposed portion 36B and the bracket portions 31 and 32 also contain a foaming agent, and the base material 36 is formed by foaming and curing the foamable resin. Examples of foaming agents that can be used include chemical foaming agents and physical foaming agents. Examples of chemical foaming agents include inorganic foaming agents such as sodium bicarbonate, ammonium bicarbonate, and ammonium carbonate; nitroso compounds such as N-N'-dinitrosopentamethylenetetramine; azo compounds such as azodicarbonamide and azobisisobutyronitrile; sulfonyl hydrazides such as benzenesulfonyl hydrazide, toluenesulfonyl hydrazide, and diphenylsulfone-3,3'-disulfonyl hydrazide; and organic foaming agents such as p-toluenesulfonyl semicarbazide. Examples of physical foaming agents that can be used include carbon dioxide gas and nitrogen gas.

[0029] Next, the skin material 38 will be described in detail. The skin material 38 is a woven fabric, and as shown in Fig. 4, which is a schematic enlarged view of the surface, it is made up of a plurality of warp threads 40 and a plurality of weft threads 42. As shown in Fig. 4, the skin material 38 is woven in such a way that the weft thread 42 passes under four warp threads 40 and then over one warp thread 40, repeatedly, resulting in a so-called satin weave.

[0030] The warp yarns 40 are made up of a plurality of warp fibers 40A that are thinner than the plurality of weft fibers 42A that make up the weft yarns 42. As will be explained in detail later, the warp yarns 40 are made of split yarns, whereas the weft yarns 42 are not made of split yarns.

[0031] The warp fibers 40A constituting the warp yarns 40 and the weft fibers 42A constituting the weft yarns 42 are both made of the same material. Various synthetic fibers can be used as the material, including polyester fibers such as polyethylene terephthalate (PET) fibers, polybutylene terephthalate fibers, polytrimethylene terephthalate fibers, and polylactic acid fibers; polyamide fibers such as polyamide 6 fibers and polyamide 66 fibers; and polyolefin fibers such as polyacrylic fibers and polypropylene fibers. PET fibers are suitable for skin materials used in vehicle interiors, and in this embodiment, PET fibers are used for the warp fibers 40A and the weft fibers 42A. However, while the weft fibers 42A have a circular cross section, the warp fibers 40A have a triangular cross section and are ultrafine fibers with a single fiber diameter (specifically, the diameter of the circumscribed circle) of 1 μm to 6 μm, as schematically shown in FIG. 5 . In this embodiment, the warp fibers 40A have a single fiber diameter of about 2 μm. That is, the skin material 38 is an ultrafine fiber layer in which a plurality of ultrafine warp fibers 40A are arranged in a planarly dispersed state. Although the skin material 38 is formed only from an ultrafine fiber layer, it may be configured, for example, such that one warp uses the ultrafine warp fibers 40A and the other warp uses fibers with a larger fiber diameter than the warp fibers 40A, i.e., a so-called double weave, in which either fiber layer is an ultrafine fiber layer.

[0032] Here, a brief description will be given of a method for manufacturing the warp fibers 40A. First, a composite fiber 50 made of two types of synthetic resins and having the cross-sectional shape shown in FIG. 6 is formed by melt spinning. This composite fiber 50 is hollow and cylindrical, and includes an inner edge portion 52, an outer edge portion 53, a peripheral edge portion 56 having a shape with a plurality of radial portions 54 extending radially from the inner edge portion 52 at equal angular intervals and connecting to the outer edge portion 53, and a plurality (17 in this embodiment) of wedge portions 58 each having a wedge shape (triangular in cross section) that fills the spaces between the radial portions 54. The wedge portions 58 are made of PET, and the peripheral edge portion 56 is made of polyamide. Then, by subjecting this composite fiber 50 to an alkali treatment, the peripheral edge portion 56 is dissolved, leaving only the wedge portions 58, as shown in FIG. 7. The remaining wedge portions 58 become the warp fibers 40A having the triangular cross section described above.

[0033] In this embodiment, a yarn (a so-called split yarn, which corresponds to an ultrafine fiber yarn) made by twisting a plurality of the above composite fibers 50 (in this embodiment, 25 fibers) is used as the warp yarn 40 to form a woven fabric, and the woven fabric is subjected to an alkali treatment to dissolve the peripheral portion 56 and leave only the wedge portion 58, thereby forming a fiber layer in which a large number of warp fibers 40A are densely packed, as shown in FIG. 5.

[0034] The warp density of the warp threads 40 of the skin material 38 is set to 330 threads / inch or more. While a higher warp density improves reflectivity and strength, it also increases weight and material costs. Therefore, the warp density of the warp threads 40 is preferably within the range of 330 to 410 threads / inch, and more preferably 360 to 405 threads / inch. The skin material 38 with the above warp density has 140,250 (= 330 threads × number of composite fibers: 25 × number of first warps: 17) to 174,250 warp fibers 40A per inch in the direction of extension of the weft threads 42. As mentioned above, the skin material 38 is formed of satin weave, so that the warp threads 40 are positioned below the weft threads 42 in only a few places, and are aligned horizontally in a straight line. In other words, the warp fibers 40A are arranged closely together in a linear state, and are configured to effectively reflect infrared rays.The weft density of the weft yarns 42 is preferably set within a range of 45 to 120 threads / inch, and more preferably 85 to 97 threads / inch.

[0035] Next, the ultrafine fiber occupancy rate was calculated, which is the proportion of the area occupied by the warp fibers 40A, which are ultrafine fibers, in a cross section perpendicular to the direction in which the warp threads 40 extend in the skin material 38. The ultrafine fiber occupancy rate (= (the number of ultrafine fibers per inch described above × cross-sectional area per ultrafine fiber) / (1 inch × thickness of the skin material 38)) was 9.9% or more, corresponding to a warp density of 330 threads / inch or more. The skin material 38 has an ultrafine fiber layer with an ultrafine fiber occupancy rate of 9.9% or more, and therefore has a reflectance of 85% or more in the near-infrared region.

[0036] In order for the fabric used for the skin material 38 to have a reflectance of 85% or more in the near-infrared region, in this embodiment in which the warp fibers 40A have a single fiber diameter of approximately 2 μm, the skin material 38 has an ultrafine fiber occupancy of 9.9% or more in the ultrafine fiber layer. However, considering that a higher ultrafine fiber occupancy improves light reflectivity and strength but increases weight and material costs, it is preferable that the ultrafine fiber occupancy be 12.3% or less, which corresponds to a warp density of 410 ends / inch or less. Furthermore, it is more preferable that the ultrafine fiber occupancy in the ultrafine fiber layer be 10.8% or more and 12.2% or less, which corresponds to a warp density of 60 to 405 ends / inch or less.

[0037] In the skin material 38, the warp fibers 40A, which are ultrafine fibers, are 2 μm in diameter. However, if ultrafine fibers smaller than this, 1 μm in diameter, are used, the cross-sectional area per ultrafine fiber will be smaller but the number of fibers will increase. On the other hand, if ultrafine fibers with a fiber diameter larger than 2 μm are used, the cross-sectional area per ultrafine fiber will be larger but the number of fibers will decrease. Therefore, in either case, the occupancy rate of ultrafine fibers will be approximately the same as that of this embodiment.

[0038] Next, a lamp irradiation test shown in FIG. 8 was conducted to evaluate the performance of the vehicle interior material of this embodiment. In this test, thermocouples 82, which are temperature sensors, were placed on the front and back surfaces of sample 80, and light from a reflector lamp 84 (1000 W / m2) was irradiated from the front surface of sample 80. The maximum temperature detected after the light irradiation was then evaluated. Sample 80 was formed by attaching a skin material 80B to a substrate 80A (corresponding to the covering portion). This test was conducted at room temperature.

[0039] Two examples and two comparative examples for comparison with each of the two examples were prepared as sample 80. In example 1, the substrate 80A is white polypropylene containing no carbon black, and the skin material 80B is the above-mentioned skin material 38 using ultrafine fibers (hereinafter, sometimes referred to as "ultrafine fiber skin 38"). On the other hand, in comparative example 1, which is a comparison to example 1, the skin material 80B is the same ultrafine fiber skin 38, while the substrate 80A is black polypropylene containing carbon black. In example 2 and comparative example 2, the skin material 80B is changed from the ultrafine fiber skin 38 to a black TPO (olefin-based thermoplastic elastomer) skin, unlike example 1 and comparative example 1. Note that the substrates used in the two examples and two comparative examples do not contain a foaming agent, unlike the above embodiment.

[0040] As can be seen from the results shown in Figure 9, when comparing Example 1 with Comparative Example 1 and when comparing Example 2 with Comparative Example 2, it was confirmed that by using a white substrate to reduce infrared absorptance, the temperature on the back side of the white substrate could be reduced compared to the Comparative Example using a black substrate, i.e., the temperature of the substrate itself could be reduced. Furthermore, it was confirmed that Examples 1 and 2, which used white substrates, could significantly reduce the surface temperature of the skin material compared to Comparative Examples 1 and 2. In particular, in the case of the TPO skin, the temperature was reduced by as much as 18°C, confirming that the surface temperature of vehicle interior materials could be effectively reduced.

[0041] As described above, the first dashboard 24, which is a vehicle interior material of this embodiment, is configured such that a portion of the base material 36 is covered with the skin material 38, and the covered portion 36A, which is a portion of the base material 36, is made of white synthetic resin, so that its infrared absorptivity is lower than that of the exposed portion 36B, which is made of black synthetic resin. With this configuration, even if the skin material 38 is a dark color that easily stores heat, the covered portion 36A has properties that make it difficult for heat to be stored, so that not only can an increase in temperature of the base material 36 but also an increase in the surface temperature of the skin material 38 can be suppressed.

[0042] Furthermore, the base material 36 of the first dashboard 24 is molded from a foam resin, which more effectively suppresses heat accumulation in the base material 36 and also more effectively suppresses the surface temperature of the skin material 38. Furthermore, the skin material 38 of the first dashboard 24 has an ultrafine fiber layer 38A made of ultrafine fibers with a single fiber diameter of 1 μm or more and 6 μm or less, which more effectively suppresses heat accumulation in the base material 36 and also more effectively suppresses the surface temperature of the skin material 38, as shown in FIG.

[0043] As shown in FIGS. 1 and 2 , the first dashboard 24 has an exposed portion 36B along the border between the periphery of the air conditioner outlet 23 and the second dashboard 25, the instrument panel 20, the monitor 21, the steering wheel 22, and the panel member 26 disposed below the first dashboard 24. Because the air conditioner outlet 23 is open, there is a risk that the occupant may be able to see inside. Furthermore, the border portion may allow the occupant to see the edge of the base material 36. In particular, if a bright color such as white is used in such an area, it may easily attract the occupant's attention and impair the design. In the first dash panel 24, which is a vehicle interior material of this embodiment, the exposed portion 36B is made of black synthetic resin in the area that may be visible to the occupant, thereby avoiding the above-mentioned deterioration in design.

[0044] The second dashboard 25 is also a vehicle interior material of this embodiment, and like the first dashboard 24, it includes a base material 90 and a skin material 92. The base material 90 has a covered portion that is covered with the skin material 92 and an exposed portion 90A that is not covered with the skin material 92, and the covered portion has a lower infrared absorptivity than the exposed portion 90A. As shown in FIG. 1 , the second dashboard 25 has the exposed portion 90A along the periphery of the interior design surface.

[0045] Furthermore, in this vehicle, the vehicle interior material of this embodiment is also adopted in the door trim 12. Specifically, as shown in FIG. 1 , the door trim 12 includes an upper board 94 and a lower board 95, and the upper board 94 located directly below the door glass 16 is the vehicle interior material of this embodiment. That is, like the first dashboard 24 and the second dashboard 25, the upper board 94 includes a base material 96 and a skin material 98. The base material 96 has a covered portion covered with the skin material 98 and an exposed portion 96A that is not covered with the skin material 98, and the covered portion has a lower infrared absorptivity than the exposed portion 96A. Note that, as shown in FIG. 1 , the upper board 94 is provided with an air outlet 94A on the front side for preventing the door glass 16 from fogging, etc., and the area around the outlet 94A and the area rearward of the outlet 94A along the periphery of the interior design surface are the exposed portion 96A.

[0046] <Other embodiments> The present invention is not limited to the above-described embodiment, and can be embodied in various forms with various modifications and improvements based on the knowledge of those skilled in the art. For example, the following embodiments are also included within the technical scope of the present invention.

[0047] In the above embodiment, the base material 36 has the covering portion 36A molded from a white synthetic resin, thereby making the covering portion 36A have a lower infrared absorptivity than the exposed portion 36B molded from a black synthetic resin. However, as long as the infrared absorptivity of the covering portion 36A is lower than that of the exposed portion 36B, there are no particular limitations on the colors. The covering portion 36A may also be made of a transparent material with high light transmittance. Furthermore, even if the covering portion is dark in color, it may be molded from a material with low heat absorptivity.

[0048] In the above embodiment, the ultrafine fibers of the skin material 38 are used only for the warp yarns 40, but it is also possible to use ultrafine fibers for the weft yarns 42. With such a configuration, it is possible to further improve the infrared reflective performance.

[0049] In the above embodiment, the skin material is a woven fabric, but it may also be a knitted fabric, or a nonwoven fabric, etc., as long as it has an ultrafine fiber layer in which ultrafine fibers with a single fiber diameter of 1 μm to 6 μm are dispersed in a planar pattern. Furthermore, although the ultrafine fibers constituting the ultrafine fiber layer are PET fibers, this is not limitative, and various other synthetic fibers, natural fibers, etc. may be used as long as the single fiber diameter is 1 μm to 6 μm.

[0050] In the above embodiment, the ultrafine fibers constituting the ultrafine fiber layer have a triangular cross section, but this is not limited thereto, and the ultrafine fibers may have other irregular cross sections or may have a round cross section.

[0051] As the skin material, an ultrafine fiber skin is used in Example 1 and a TPO skin is used in Example 2, but the present invention is not limited to these and various skins can be used.

[0052] The vehicle interior material of the above embodiment is used for the instrument panel 10 and the door trim 12 of the vehicle, but it can also be used for other interior materials of the vehicle, such as pillar garnishes and center consoles.

[0053] In the above embodiment, an automobile is used as an example of a vehicle, but the vehicle interior material of the present invention is not limited to this and can also be applied to ground vehicles such as trains and recreational vehicles, air vehicles such as airplanes and helicopters, and marine and underwater vehicles such as ships and submarines. [Explanation of symbols]

[0054] 10...instrument panel, 12...door trim, 24...first dashboard (vehicle interior material), 25...second dashboard (vehicle interior material), 36...base material, 36A...covering portion, 36B...exposed portion, 38...skin material, 38A...first fiber layer (ultrafine fiber layer), 40A...first warp fiber (ultrafine fiber), 90...base material, 90A...exposed portion, 92...skin material, 94...upper board (vehicle interior material), 96...base material, 96A...exposed portion, 98...skin material

Claims

1. A vehicle interior material comprising a substrate and a skin material, the substrate has a covered portion covered with the skin material and an exposed portion not covered with the skin material, The covered portion has a lower infrared absorptance than the exposed portion.

2. the exposed portion is made of a resin containing carbon black, 2. The vehicle interior material according to claim 1, wherein the covering portion is made of a resin that does not contain carbon black.

3. 3. The vehicle interior material according to claim 1, wherein the base material is formed by integrally molding the covering portion and the exposed portion by two-color molding.

4. 3. The vehicle interior material according to claim 1, wherein the base material is formed by foaming and curing a foamable resin.

5. 3. The vehicle interior material according to claim 1 or 2, wherein the skin material is made of a fabric having an ultrafine fiber layer in which ultrafine fibers having a single fiber diameter of 1 μm or more and 6 μm or less are arranged in a planarly dispersed state, and the ultrafine fiber layer has a reflectance of 85% or more in the near-infrared region.

6. 6. The vehicle interior material according to claim 5, wherein the ultrafine fiber layer has an ultrafine fiber occupancy rate, which is a ratio of an area occupied by the ultrafine fibers in a cross section perpendicular to a direction in which the ultrafine fibers extend, of 9.9% or more.

7. The vehicle interior material is an instrument panel of a vehicle, 3. The vehicle interior material according to claim 1, wherein the exposed portion is a portion along a boundary between a periphery of an air outlet of an air conditioner mounted in a vehicle and another panel member.

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