KR102724820B1 - An automobile inside component and a method of manufacturing the automobile inside component - Google Patents

Abstract

An automobile interior material according to an embodiment of the present invention may include a base layer mounted on an automobile, a skin layer covering the base layer so as to have a gap with the base layer at least in a portion of the base layer, and a spacer disposed within the gap to support the skin layer with respect to the base layer and including an elastic material.

Description

{An automobile inside component and a method of manufacturing the automobile inside component}

The present invention relates to automobile interior materials and a method for manufacturing automobile interior materials.

The interior materials of automobiles have changed to provide a pleasant touch to the passengers. This is due to the goal of providing high-quality cushioning to the parts that the passengers frequently touch or touch.

In response to these goals, foam has been used to enhance cushioning in crash pads, door interiors, etc. More specifically, foam has been placed between the core and the outermost skin mounted on the frame of the car to provide cushioning to the passengers.

However, even when using these forms, the car interior materials often felt hard to the touch.

The problem that the present invention seeks to solve is to provide an automobile interior material with improved cushioning.

The tasks of the present invention are not limited to the tasks mentioned above, and other tasks not mentioned will be clearly understood by those skilled in the art from the description below.

According to an embodiment of the present invention for solving the above problem, an automobile interior may include a base layer mounted on an automobile, a skin layer covering the base layer so as to have a gap with the base layer at least in a portion of the base layer, and a spacer disposed within the gap to support the skin layer with respect to the base layer and including an elastic material.

The above spacer can elastically support the skin layer when an external force is applied to the skin layer in a direction in which the gap narrows.

The above spacer can provide a restoring force to the skin layer in a direction to restore the gap based on elasticity after the external force is released.

The above spacer may include a plurality of protrusions that support the skin layer by having one end in contact with the base layer and the other end in contact with the skin layer, and a connecting member that is positioned between the plurality of protrusions to connect the plurality of protrusions to each other and includes an elastic material.

In a state where the above external force is applied, the plurality of protrusions can support the skin layer at an angle different from the initial state to the connecting member due to the external force.

The above connecting member can provide elasticity in the direction in which the plurality of protrusions are restored to the initial state.

The above plurality of protrusions include an inclined surface formed so that the area of one end becomes smaller, and can be guided and tilted by the inclined surface when the external force is applied.

The above base layer may include a core layer mounted on the automobile and a foam layer laminated on one surface of the core layer to face the skin layer and including a foam body.

The above foam layer may include a foam layer made of the foam, and a high-hardness coating layer formed at a portion where the foam layer comes into contact with the plurality of protrusions and having a higher hardness than the plurality of protrusions.

Depending on the use of the above automobile, the body support area expected to support the user's body may be provided with the gap between the foam layer and the skin layer, and the spacer may be placed in the gap.

The foam layer and the skin layer can be in close contact with a non-body support area other than the body support area.

It may further include a heating wire arranged inside the above gap.

A method for manufacturing an automobile interior according to an embodiment of the present invention for solving the above problem may include a step of preparing a base layer to be mounted on an automobile, a step of arranging a spacer including an elastic material on at least one area of the base layer, and a step of connecting a skin layer to the base layer to cover the base layer and the spacer.

The above spacer is positioned between the skin layer and the base layer, and can elastically support the skin layer when an external force is applied to the skin layer in a direction in which the gap with the base layer narrows.

The above spacer can provide a restoring force to the skin layer in a direction to restore the gap based on elasticity after the external force is released.

Other specific details of the present invention are included in the detailed description and drawings.

According to embodiments of the present invention, at least the following effects are achieved.

It can provide passengers with high-quality cushioning.

Damage to the foam layer can be prevented even after long-term use.

The effects according to the present invention are not limited to those exemplified above, and further diverse effects are included in the present specification.

FIG. 1 is a schematic cross-sectional view of an automobile interior according to one embodiment of the present invention.
FIG. 2 is a drawing expressing a situation in which an external force is applied to an automobile interior material according to one embodiment of the present invention and then the external force is removed.
Figure 3 is a flow chart of a method for manufacturing automobile interior materials according to one embodiment of the present invention.
Figure 4 is a flowchart of steps that may be included in the step of preparing a base layer.
Figure 5 is a drawing showing the formation of a foam layer and a core layer using a turntable double injection method.
FIG. 6 is a drawing expressing the order of forming each layer of an automobile interior material according to one embodiment of the present invention.

The advantages and features of the present invention, and the methods for achieving them, will become clear with reference to the embodiments described in detail below together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and these embodiments are provided only to make the disclosure of the present invention complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims.

In addition, the embodiments described in this specification will be explained with reference to cross-sectional drawings and/or schematic drawings, which are ideal examples of the present invention. Therefore, the form of the examples may be modified due to manufacturing techniques and/or tolerances, etc. In addition, each component in each drawing illustrated in the present invention may be illustrated to some extent enlarged or reduced for convenience of explanation. The same reference numerals throughout the specification indicate the same components.

Hereinafter, the present invention will be described with reference to drawings for explaining an automobile interior material according to an embodiment of the present invention. Figure 1 is a schematic cross-sectional view of an automobile interior material according to an embodiment of the present invention.

As illustrated in FIG. 1, an automobile interior material (1) according to one embodiment of the present invention may include a base layer (100), a spacer (200), and a skin layer (300). Hereinafter, for convenience of explanation, the direction in which the base layer (100) is positioned with respect to the skin layer (300) is referred to as the upward direction, and the opposite direction is referred to as the downward direction. However, this is only for convenience of explanation, and it should be interpreted that the skin layer (300) and the base layer (100) may have any positional relationship, such as left-right, up-down, or diagonal, depending on the state in which they are mounted on the automobile.

The base layer (100) may be a layer mounted on a frame forming the skeleton of an automobile in the automobile interior material (1). This base layer (100) may be composed of a core layer (110) and a foam layer (120).

The core layer (110) may be a frame layer mounted on a frame of an automobile. To this end, a joining structure for mounting on a frame of an automobile may be formed on the core layer (110). This core layer (110) may be manufactured by an injection molding method. For example, the core layer (110) may be formed by injection molding a material such as polypropylene, PC/ABS, or polyamide.

The foam layer (120) may be a layer laminated on the upper surface of the core layer (110). The foam layer (120) is a porous layer, has soft characteristics, and may contribute to increasing the cushioning of the automobile interior material (1). Specifically, the foam layer (120) may be a layer including a foam having bubbles. For example, the foam may be obtained by foaming an olefin composite material, polyurethane, or the like.

This foam layer (120) can be further divided into a foam layer (122) and a high-hardness coating layer (124). The foam layer (122) is a layer formed of the above-described foam, and can increase the cushioning of the automobile interior material (1) by utilizing its soft characteristics.

The high-hardness coating layer (124) is a layer disposed on the upper surface of the foam layer (122), and may be a layer coated on at least one area of the uppermost surface of the foam layer (120). Preferably, the high-hardness coating layer (124) may be formed on a portion that comes into contact with the spacer (200). The high-hardness coating layer (124) may be a layer composed of a material having a higher hardness than the protrusion (210) of the spacer (200). For example, the high-hardness coating layer (124) may be a coating layer/thin film layer based on a metal material.

The spacer (200) may be a member positioned so that the base layer (100) and the skin layer (300) do not come into direct contact and can maintain a certain distance between them. This spacer (200) may be configured to include a plurality of protrusions (210) and a connecting member (220).

The plurality of protrusions (210) may have a shape protruding from the upper and lower surfaces of the connecting member. However, the shape of the protrusions (210) is exemplary, and the shape of the protrusions (210) may be a shape that can perform the function of the spacer (200) as determined in the description below. For example, the protrusions (210) may not have a sharp shape, unlike the illustrated example, and may have a shape protruding only from one of the upper and lower surfaces. In addition, although the heights of the upper and lower portions of the protrusions (210) are illustrated as being the same and/or similar, the present invention is not limited thereto. The protrusion height of the upper portion of the protrusions (210) may be set in consideration of the tactile sensation when the user presses the skin layer (300). For example, the upper portion of the protrusions (210) may be formed to be shorter than the lower portion.

Meanwhile, the number of protrusions (210) and the spacing between the protrusions (210) can be appropriately selected considering the task of increasing cushioning. The number and spacing of the protrusions (210) can be appropriately selected by experimentally determining them.

The protrusion (210) may have inclined surfaces formed at both ends. Hereinafter, the inclined surface extending from the middle of the protrusion (210) to the upper tip is referred to as the upper inclined surface (212), and the inclined surface extending from the middle of the protrusion (210) to the lower tip is referred to as the lower inclined surface (214). The upper inclined surface (212) and the lower inclined surface (214) may be formed so that the upper and lower ends each have a smaller area than the central portion of the protrusion (210). Therefore, the protrusion (210) may have a horn shape protruding from the connecting member (220). Hereinafter, the protrusion (210) is explained assuming that it has a shape in which two cones are connected, but this is only an assumption to help understanding of the present invention, and as described above, the shape of the protrusion (210) may be formed in various ways.

The upper end of the protrusion (210) may be in contact with the skin layer (300), and the lower end of the protrusion (210) may be in contact with the high-hardness coating layer (124). Accordingly, the gap between the skin layer (300) and the base layer (100) may be maintained by the plurality of protrusions (210). Although not shown, the upper end and/or the lower end of the protrusion (210) may be processed to have a gently curved shape to prevent damage to the skin layer (300) and/or the base layer (100) due to stress concentration caused by the shape.

The connecting member (220) may be a member that connects between a plurality of protrusions (210). For example, the connecting member (220) may be made of a substantially plate-shaped material and may be provided to connect a plurality of protrusions (210) to each other.

Meanwhile, the connecting member (220) and/or the plurality of protrusions (210) may include or be composed of an elastic material. Accordingly, the spacer (200) may perform a role of elastically supporting the skin layer (300) with respect to the base layer (100). More specifically, the connecting member (220) and/or the plurality of protrusions (210) may be deformed when an external force is applied and store elastic energy, and may be restored to the initial state based on the elastic force when the external force is released.

The skin layer (300) is the outermost layer of the automobile interior material (1) and may be a layer exposed to the automobile interior environment when installed in an automobile. The skin layer (300) is laminated on the upper surface of the base layer (100), and the spacer (200) may be positioned between the skin layer (300) and the base layer (100).

More specifically, the area where the spacer (200) is positioned between the skin layer (300) and the base layer (100) may be a body-supporting area (A1), and the area where the skin layer (300) and the base layer (100) are in close contact may be a non-body-supporting area (A2). In the body-supporting area (A1), due to the presence of the spacer (200), a gap equal to the height of the protrusion (210) of the spacer (200) may be created between the skin layer (300) and the base layer (100) in an initial state in which there is no external force.

The body-mounting area (A1) may be an area where a passenger is expected to place his or her body during use of the vehicle, or where frequent body contact with the passenger is expected. Accordingly, the body-mounting area (A1) may be formed in different locations depending on the type of the vehicle interior material (1). For example, the body-mounting area (A1) may be formed on a crash pad, a door handle, etc.

Meanwhile, the non-body mounting area (A2) may be an area where the passenger's body mounting is unnatural or where body contact is not expected to be frequent during the use of the vehicle. Likewise, the non-body mounting area (A2) may be formed in a different location depending on the type of the vehicle interior material (1). For example, the non-body mounting area (A2) may be an area that takes into account the part of the door excluding the handle, the ceiling of the vehicle, etc.

Since the automobile interior material (1) according to one embodiment of the present invention distinguishes between a body-bearing area (A1) and a non-body-bearing area (A2), the area where the body is beared can provide a high-quality cushioning feeling to realize a high-touch feeling, and the area where the body is not beared can have the advantage of preventing unnecessary weight increase and reducing manufacturing costs by eliminating the spacer (200).

Meanwhile, although not shown, the automotive interior material (1) may further include heating wires. For example, the heating wires may be placed on the high-hardness coating layer (124), on the connecting member (220), or on the lower surface of the skin layer (300).

The heating wire is connected to the control circuit of the car and can be linked to the car heater. Accordingly, when the car heater is turned on, the heating wire is heated to a degree proportional to the car heater setting temperature, thereby heating the interior of the car interior.

Hereinafter, a method for providing a high-quality cushion feeling by an automobile interior material (1) according to one embodiment of the present invention will be described with reference to FIG. 2. FIG. 2 is a drawing expressing a situation in which an external force is applied to an automobile interior material according to one embodiment of the present invention and then the external force is removed. Specifically, FIG. 2(a) is a drawing expressing an external force applied from the outside of a skin layer, and FIG. 2(b) is a drawing expressing an automobile interior material being restored to its initial state by the elastic force of a spacer.

Referring to FIG. 2, an external force (F) that presses the skin layer (300) toward the base layer (100) may be applied to the skin layer (300) by contact with the user's body. When this external force (F) is applied, the protrusion (210) near the part where the external force (F) is applied may be rotated by the external force (F).

Hereinafter, it is explained assuming that the protrusion (210) is approximately perpendicular to the connecting member (g2; see Fig. 2(b)) in the initial state without an external force, but the present invention is not limited thereto. When an external force (F) is applied to the skin layer (300), the protrusion (210) may be guided by the upper inclined surface (212) and/or the lower inclined surface (214) to tilt (see Fig. 2(a)). In this state, the protrusion (210) may form an angle (g1; see the angle formed by the protrusion with the connecting member before returning to the initial state indicated by the dotted line in Fig. 2(b)) with the connecting member (220).

Referring to Fig. 2(a), when the skin layer (300) is pressurized and pushed toward the base layer (100), the lower surface of the skin layer (300) deformed by the external force (F) may push the upper inclined surface (212). As a result, the upper inclined surface (212) may receive force in a direction away from the portion where the external force (F) is applied. The protrusion (210) is guided by the upper inclined surface (212) so that the upper end moves in a direction away from the portion where the external force (F) is applied, and the angle with the connecting member (220) may be changed. At this time, elastic energy may be stored in the protrusion (210) and/or the connecting member (220) by the amount of the tilted angle (g1).

Meanwhile, Fig. 2(a) exemplifies that when an external force (F) is applied, the upper end of the protrusion (210) moves in a direction away from the portion to which the external force (F) is applied, but the present invention is not limited thereto.

For example, conversely, depending on the shape of the lower surface of the skin layer, the direction of the external force, etc., the lower end of the protrusion (210) may move in a direction away from the portion where the external force (F) is applied. In this case, the protrusion (210) may be guided in a change in inclination by the lower inclined surface (214).

In addition, when an external force (F) is applied, the gap between the base layer (100) and the skin layer (300) narrows, so the air below the part where the external force (F) is applied can move to the space on both sides according to the narrowed gap.

When the external force (F) is released, the protrusion (210) can be restored to its initial state by the elastic energy stored in the connecting member (220) and/or the protrusion (210). As a result, the protrusion (210) can be tilted in the opposite direction to when the external force (F) was applied and can again form an approximately right angle (g2) with the connecting member (220).

At this time, the protrusion (210) returns to its initial state due to elasticity, and a force pushing the skin layer (300), and the force of air flowing into the gap created by the widening gap between the skin layer (300) and the base layer (100) pushing the skin layer (300), can apply a restoring force (B) to the skin layer (300).

The restoring force (B) is a force that pushes the lower surface of the skin layer (300) and can be applied in a direction that restores the gap between the skin layer (300) and the base layer (100) to the same or similar to the gap in the initial state.

Hereinafter, based on the above description, a method for manufacturing an automobile interior material according to one embodiment of the present invention will be described with reference to FIGS. 3 to 6. In order to omit redundant description, parts that are identical or similar to those in the above-described embodiment are designated by the same drawing reference numerals, and their descriptions are omitted.

First, FIG. 3 is a flow chart of a method for manufacturing automobile interior materials according to one embodiment of the present invention.

As illustrated in FIG. 3, a method for manufacturing an automobile interior material according to one embodiment of the present invention may be configured to include a step of preparing a base layer (S100), a step of preparing a spacer (S200), a step of arranging the spacer (S300), and a step of connecting a skin layer to the base layer (S400).

First, the step (S100) of preparing the base layer may be a step of manufacturing and/or providing the base layer. The base layer may include a core layer, a foam layer, and a high-hardness coating layer as described above. A description of the case of manufacturing the base layer will be described below with reference to FIGS. 4 and 5.

The step (S200) of preparing a spacer may be a step of manufacturing and/or providing a chaser. The spacer may include a protrusion and a connecting member as described above. The spacer may be manufactured through injection molding so as to have a shape in which a protrusion protrudes from the connecting member. The material of the spacer may be provided as a rubber composite material, TPU (thermoplastic polyurethane), TPO (thermoplastic polyolefin), etc.

In the step of arranging the spacer (S300), the spacer may be arranged on the base layer. In this step, the spacer may be arranged at a preset position according to the car interior material. The preset position may mean a body support area.

In the step (S400) where the skin layer is connected to the base layer, the skin layer can be connected to the base layer so as to cover the base layer. This step may be a step corresponding to a wrapping process of automobile interior materials.

Meanwhile, the skin layer can be composed of various materials such as rubber composite material, TPU (thermoplastic polyurethane), TPO (thermoplastic polyolefin), and leather. The skin layer can be prepared by various manufacturing methods such as injection molding and vacuum forming.

Hereinafter, a method for manufacturing a base layer will be described with reference to FIGS. 4 and 5. FIG. 4 is a flow chart of steps that may be included in the step of preparing a base layer. In this regard, FIG. 5 is a drawing expressing the formation of a foam layer and a core layer by a turntable double injection method.

First, the turntable double injection method is briefly explained. As shown in Fig. 5(a), the turntable double injection method can utilize a plurality of molds (MU1, MU2, MD). For example, the plurality of molds (MU1, MU2, MD) can include two injection molds (MU1, MU2) and a product mold (MD). A plurality of injectors (I) can be formed in the injection molds (MU1, MU2). At this time, the plurality of injection molds (MU1, MU2) can each receive different materials from the injectors (I).

The product mold (MD) can be selectively coupled to each of the injection molds (MU1, MU2). At this time, the space (first space) between the product mold (MD) and the first injection mold (MU1) when the product mold (MD) is coupled to the first injection mold (MU1) can be narrower than the space (second space) between the product mold (MD) and the second injection mold (MU2) when the product mold (MD) is coupled to the second injection mold (MU2). For example, the first space can be of a size that can be included in the second space.

As shown in Fig. 4, when the base layer (100) is manufactured, the step (S100) of preparing the base layer may include the step (S110) of forming a core layer, the step (S120) of forming a foam layer, and the step (S130) of coating a high-hardness coating layer.

In the step (S110) of forming a core layer, the product mold positioned as in FIG. 5(a) can be combined with the first injection mold (MU1) as illustrated in FIG. 5(b). The first injection mold (MU1) can supply the material of the core layer (110) into the first space through the injector (I). For example, the first injection mold (MU1) can supply polypropylene, PC/ABS, polyamide, etc. through the injector (I). As a result, the core layer (110) can be formed on the product mold (MD) in this step.

In the step (S120) of forming the foam layer, the first injection mold (MU1) and the product mold (MD) are released again, and the product mold (MD) can be connected to the second injection mold (MU2) as shown in Fig. 5(c). For example, after the product mold (MD) is released from the first injection mold (MU1), it can be rotated by a predetermined angle to face the second injection mold (MU2) and be connected to the second injection mold (MU2). At this time, since the second space is larger than the first space, a gap may exist between the core layer (110) and the second injection mold (MU2).

The second injection mold (MU2) can supply resin for forming a foam layer (122) into the second space through the injector (I). For example, the second injection mold (MU2) can supply an olefin composite material, polyurethane, etc. into the second space. Accordingly, in this step, the foam layer (122) can be injected onto the core layer (110) formed in the step (S110) of forming the core layer, and the foam layer (122) can be laminated onto the core layer (110).

As described above, since the step of forming a core layer (S110) and the step of forming a foam layer (S120) are performed using a single turntable double injection device, there may be an advantage of shortening the process time.

In the step (S130) of coating a high-hardness coating layer, a high-hardness coating layer (124) is coated on a laminate including a foam layer (122) and a core layer (110) formed in the step (S120) of forming a foam layer. A description thereof will be given below with reference to FIG. 6.

FIG. 6 is a drawing expressing the order of forming each layer of an automobile interior material according to one embodiment of the present invention.

Fig. 6(a) shows a laminate injected from a turntable double injection molding machine. As shown in Fig. 6(a), when the laminate is laminated and taken out from the mold, a high-hardness coating layer (124) can be coated on the foam layer (122) as shown in Fig. 6(b). The high-hardness coating layer (124) can be coated with various materials through various conventional coating methods. For example, the high-hardness coating layer (124) can be coated through immersion drawing, electroless plating, vapor deposition, etc.

At this time, the hardness of the high-hardness coating layer (124) may be required to be higher than the hardness of the protrusion (210). This may be to prevent the protrusion (210) from digging into or damaging the foam layer (120) even when the foam layer (120) is repeatedly exposed to an external force (F, see FIG. 2) and is pressed by the protrusion (210) during the use of the automobile interior material.

When the coating of the high-hardness coating layer (124) is completed, a spacer (200) can be placed on the high-hardness coating layer (124), as shown in Fig. 6(c). Since the spacer (200) is provided only in the body-supporting area, the high-hardness coating layer (124) can also be coated only in the body-supporting area.

When the spacer (200) is placed on the body support area, the skin layer (300) covers the spacer (200) and the base layer (100) so that they are not exposed to the outside. For example, the skin layer (300) may be connected to the base layer (100) so as to surround the spacer (200) and the base layer (100) except for the portion where the core layer (110) is to be mounted on the car.

A person having ordinary skill in the art to which the present invention pertains will understand that the present invention can be implemented in other specific forms without changing the technical idea or essential characteristics thereof. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive. The scope of the present invention is indicated by the claims described below rather than the detailed description above, and all changes or modified forms derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included in the scope of the present invention.

1: Car interior material 100: Base layer
110: Core layer 120: Foam layer
122: Foam layer 124: High hardness coating layer
200: Spacer 210: Bump
212: Upper slope 214: Lower slope
220: connecting member 300: skin layer
A1: Body support area A2: Non-body support area
I: Injector MU1, MU2: Injection mold
MD: Product Mold

Claims (8)

Base layer mounted on a car;
a skin layer covering the base layer so as to have a gap from the base layer at least in some areas; and
A spacer is disposed within the gap to support the skin layer with respect to the base layer and includes an elastic material;
The above spacer,
A plurality of protrusions that support the skin layer, with one end contacting the base layer and the other end contacting the skin layer; and
A connecting member positioned between the plurality of protrusions and connecting the plurality of protrusions to each other, and including an elastic material;
When an external force is applied,
The above plurality of protrusions support the skin layer at an angle different from the initial state to the connecting member due to the external force, and the connecting member provides elasticity in the direction in which the plurality of protrusions are restored to the initial state.
The above multiple protrusions are,
Including a slope formed so that the area of one end becomes smaller, it tilts guided by the slope in the state where the external force is applied,
The above base layer is,
A core layer mounted on the above vehicle; and
A foam layer including a foam body, laminated on one surface of the core layer and facing the skin layer;
The above foam layer,
A foam layer provided with the above foam; and
An automobile interior material, comprising: a high-hardness coating layer formed at a portion of the foam layer that comes into contact with the plurality of protrusions and having a higher hardness than the plurality of protrusions.
delete delete delete delete In the first paragraph,
Depending on the use of the above automobile, the body support area expected to support the user's body is provided with the above gap between the above foam layer and the above skin layer, and the above spacer is placed in the above gap.
An automobile interior material in which the foam layer and the skin layer are in close contact with each other in a non-body-bearing area other than the body-bearing area.
In the first paragraph,
An automobile interior material further comprising a heating wire arranged inside the above gap.
The stage where the base layer to be mounted on the car is prepared;
A step in which a spacer including an elastic material is placed on at least one area of the base layer; and
A step of connecting a skin layer to the base layer to cover the base layer and the spacer;
The above spacer,
A plurality of protrusions that support the skin layer, with one end contacting the base layer and the other end contacting the skin layer; and
A connecting member positioned between the plurality of protrusions and connecting the plurality of protrusions to each other, and including an elastic material;
When an external force is applied,
The above plurality of protrusions support the skin layer at an angle different from the initial state to the connecting member due to the external force, and the connecting member provides elasticity in the direction in which the plurality of protrusions are restored to the initial state.
The above multiple protrusions are,
Including a slope formed so that the area of one end becomes smaller, it tilts guided by the slope in the state where the external force is applied,
The above base layer is,
A core layer mounted on the above vehicle; and
A foam layer including a foam body, laminated on one side of the core layer and facing the skin layer;
The above foam layer,
A foam layer provided with the above foam; and
A method for manufacturing an automobile interior material, comprising: a high-hardness coating layer formed at a portion of the foam layer that comes into contact with the plurality of protrusions and having a higher hardness than the plurality of protrusions;

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