KR20230059470A - Car interior material having radiation heater car and method for manufacturing thereof - Google Patents

Abstract

The present invention relates to a vehicle interior material having a radiant heater and a manufacturing method thereof, comprising: a substrate constituting a part of the vehicle interior material; a radiant heater mounted on the substrate; an insulator interposed between the substrate and the radiant heater; and a fabric covering the radiant heater and the base material, wherein the base material has a plurality of insulating pores formed therein, thereby lowering the thermal conductivity of the material by air to improve the heat insulating performance of the radiant heater. Minimizes heat loss and reduces power consumption.

Description

Vehicle interior material with radiant heater and manufacturing method thereof

The present invention relates to a heating device for a vehicle interior material and a method for manufacturing the same, and more particularly, to a vehicle interior material having a radiant heater generating heat by electric energy and a method for manufacturing the same.

In a heating method by an air conditioning system in a vehicle, a heater using radiant heat is used in parallel because it takes a considerable amount of time to increase the temperature of the vehicle interior.

Moreover, in the case of an electric vehicle that does not use an internal combustion engine, since engine heat cannot be used, a radiant heater using electricity as an energy source is applied.

Particularly, in recent years, technologies for mounting and using radiant heaters on vehicle interior materials (shrouds, door trims, pillar trims, consoles, headliners, crash pads, luggage trims, etc.) have been actively developed.

As a heat source of such a radiant heater, there are a linear heating element using a hot wire and a planar heating element using a heating layer having a film shape (flexible surface shape).

However, since the linear heating element uses a heating pad with a built-in heating wire, the thickness is inevitably thicker than that of the planar heating element, and when applied to a vehicle, there is a problem in that it is difficult to apply to a curved surface having a complex shape.

Therefore, a planar heating element is widely used rather than a linear heating element.

1 is a cross-sectional view schematically illustrating a vehicle interior material having a conventional radiant heater.

Referring to FIG. 1 , in a vehicle interior material having a conventional radiant heater, a heat insulator 3 is laminated and attached to an upper surface of a substrate 1 constituting a part of the vehicle interior material, and is attached to the upper surface of the heat insulator 3. A structure in which a radiant heater 2 is laminated and attached, and a fabric 4 (the fabric 4 may be formed to surround the radiant heater and the substrate) is laminated and attached to the upper surface of the radiant heater 3 have

The heat insulation unit 3 is provided to prevent heat loss to the lower surface of the radiant heater 2. Since the heat loss of the radiant heater 2 is directly related to the energy efficiency of the vehicle, a technology for reducing it is required. It is becoming. In particular, in order to expand the application of the radiant heater 2 to electric vehicles as the paradigm of the automobile industry changes from internal combustion engine vehicles to electric vehicles, it is necessary to increase heating power consumption efficiency of batteries by minimizing heat loss.

However, since the conventional insulator 3 is simply filled between the substrate 1 and the radiant heater 2 by foam injection molding using polyurethane (PU), etc., the The effect of reducing the heat loss of the radiant heater 2 was not significant.

That is, since the heat insulating part 3 has a form filled between the base material 1 and the radiant heater 2 and is manufactured in a completely filled state, the heat emitted to the lower surface of the radiant heater 2 is absorbed into the heat insulating part. Part 3 is completely transferred, and heat transfer to the base material 1 is inevitably performed according to the thermal conductivity of the heat insulating part 3 itself, so there is a limit to the heat insulating effect.

The heat loss of the radiant heater 2 takes more time to reach the set temperature after operation, causing inconvenience to the user.

Korean Registered Patent No. 10-1864637 (registered on 2018.05.30)

In solving the above problems, an object of the present invention is to improve insulation performance by lowering the thermal conductivity of materials (substrate and insulation), thereby minimizing heat loss of the radiant heater and reducing power consumption. And to provide a manufacturing method thereof.

Another object of the present invention is to provide a vehicle interior material having a radiant heater and a method for manufacturing the same, which can improve the applicability to an electric vehicle by reducing power consumption and increasing battery power use efficiency.

In addition, an object of the present invention is to provide a vehicle interior material having a radiant heater that improves user satisfaction by reducing the time required to reach a set temperature from the start of operation by increasing thermal efficiency through reduction in heat loss, and a method for manufacturing the same. is in providing

The problem to be solved by the present invention is not limited to those mentioned above, and other problems to be solved that are not mentioned can be clearly understood by a person having ordinary skill in the art to which the present invention belongs from the following description. There will be.

A vehicle interior material having a radiant heater according to an embodiment of the present invention includes a substrate constituting a part of the vehicle interior material; a radiant heater mounted on the substrate; an insulator interposed between the substrate and the radiant heater; and a fabric covering the radiant heater and the substrate, wherein the substrate has a plurality of insulating pores formed therein.

In this case, it is preferable that the substrate is manufactured by a foaming injection molding method using a first foaming mold so that the heat insulating pores are formed therein.

At this time, it is preferable that the first foam mold is configured to open the mold by a set distance during foam injection molding.

On the other hand, it is preferable that a plurality of air grooves are formed in the body of the heat insulating part.

In this case, it is more preferable that a plurality of the air grooves are formed on the upper surface of the heat insulating part to communicate with the lower surface of the radiant heater.

At this time, it is more preferable that the air groove is formed in a honeycomb structure in the heat insulating part.

Meanwhile, the heat insulating part may be manufactured by a foam injection molding method using a second foaming mold having a forming core pin so that a plurality of air grooves are formed on the upper surface thereof to communicate with the lower surface of the radiant heater.

A method for manufacturing a vehicle interior material having a radiant heater according to an embodiment of the present invention includes a base material constituting a part of the vehicle interior material, a radiant heater mounted on the base material, and an insulator interposed between the base material and the radiant heater; and a method for manufacturing a vehicle interior material having a radiant heater for manufacturing a vehicle interior material including the radiant heater and a fabric covering the substrate, wherein a plurality of insulation pores are formed inside the substrate using a first foaming mold. a substrate molding step configured to foam injection mold the substrate; and a heat insulating part molding step configured to foam-inject-mold the heat insulating part by using a second foaming mold using the base material having the insulating pores formed in the base material molding step as an insert.

In this case, the step of forming the base material is preferably configured to form the insulating pores in the base material by a method of injecting molten resin into the cavity and then opening the first foam mold by a set distance.

Meanwhile, in the forming of the heat insulating part, it is preferable to use the second foaming mold having a forming core pin on a cavity surface thereof to form the heat insulating pores of the heat insulating part.

Meanwhile, a method for manufacturing a vehicle interior material having a radiant heater according to an embodiment of the present invention includes a radiant heater mounting step configured to mount the radiant heater on a coupling structure between the substrate and the heat insulating unit; and a fabric wrapping step configured to wrap the radiant heater and the substrate with the fabric.

As described above, the vehicle interior material having a radiant heater and the method for manufacturing the same according to the present invention reduce the thermal conductivity of the material (substrate and heat insulating part) by air to improve insulation performance, thereby minimizing heat loss of the radiant heater and reducing power consumption. reduce consumption.

In addition, the vehicle interior material having a radiant heater and the method for manufacturing the same according to the present invention can reduce power consumption and increase battery power use efficiency, thereby improving applicability to electric vehicles.

In addition, the vehicle interior material having a radiant heater and the method for manufacturing the same according to the present invention increase thermal efficiency through reduction in heat loss, thereby shortening the time required to reach a set temperature from the start of operation, thereby improving user satisfaction.

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

1 is a cross-sectional view schematically illustrating a vehicle interior material having a conventional radiant heater.
2 is a side cross-sectional view schematically illustrating a vehicle interior material having a radiant heater according to an embodiment of the present invention.
FIG. 3 is a cross-sectional view schematically showing the structure of a heat insulating unit cut along line AA of FIG. 2 .
4 is a flowchart schematically illustrating a method of manufacturing a vehicle interior material having a radiant heater according to an embodiment of the present invention.
FIG. 5 is a schematic conceptual diagram for explaining the substrate molding step shown in FIG. 4 .
FIG. 6 is a schematic conceptual diagram for explaining a step of forming an insulator shown in FIG. 4 .

In the present invention, the accompanying drawings may be shown in an exaggerated expression for distinction and clarity from the prior art, and convenience of understanding the technology. In addition, the terms to be described later are terms defined in consideration of functions in the present invention, and may vary according to the intention or custom of the user or operator, so the definitions of these terms should be made based on the technical content throughout this specification. will be. On the other hand, the embodiments are only exemplary of the components presented in the claims of the present invention, do not limit the scope of the present invention, and the scope of rights should be interpreted based on the technical spirit throughout the specification of the present invention. .

Throughout the specification, when a certain component is said to "include" a certain component, it means that other components may be further included without excluding other components unless otherwise specified.

In addition, when a component is said to be "connected", "connected" or "coupled" to another component, it is not only 'directly connected', 'directly connected' or 'directly coupled', but also 'the It means that there may be a case of 'connection through another structure in the middle', 'connection through another structure in the middle', or 'combined through another structure in the middle'. On the other hand, when a component is said to be “directly connected”, “directly connected”, or “directly coupled” to another component, it should be understood that no other component exists in the middle.

In addition, when directional terms such as "front", "back", "upper", "lower", "left", "right", "one end", "the other end", "both ends", etc. are used, they refer to the disclosed drawings. Since it is used illustratively in relation to the orientation of the components, it should not be construed as limiting, and when terms such as “first” and “second” are used, they are terms for distinguishing each configuration and should not be construed as restrictive. .

In order to more clearly describe the characteristics of the embodiments of the present invention, detailed descriptions of matters widely known to those skilled in the art to which the following embodiments belong will be omitted. In addition, detailed descriptions of parts unrelated to the embodiments and descriptions in the drawings will be omitted.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a side cross-sectional view schematically showing a vehicle interior material having a radiant heater according to an embodiment of the present invention, and FIG. 3 is a side cross-sectional view schematically showing the structure of a heat insulating unit cut along line A-A of FIG. 2, FIG. 4 is a flowchart schematically illustrating a method for manufacturing a vehicle interior material having a radiant heater according to an embodiment of the present invention, and FIG. 5 is a schematic conceptual diagram for explaining a base material molding step shown in FIG. 4, and FIG. It is a schematic conceptual diagram for explaining the heat insulation forming step shown in FIG. 4 .

2 to 6 , a vehicle interior material having a radiant heater according to an embodiment of the present invention includes a substrate 10, a radiant heater 20, an insulator 30, and a fabric 40.

The substrate 10 is a component constituting a part of a vehicle interior material, and means a portion of the vehicle interior material on which the radiant heater 20 is mounted.

The substrate 10 is characterized in that a plurality of insulating pores 11 are formed therein. In this case, the base material 10 is preferably manufactured by a foam injection molding method using the first foam mold 100 so that the heat insulating pores 11 are formed therein. At this time, the injection material of the foam injection molding method may use polypropylene (PP), polyamide (PI), etc., but is not limited thereto.

The first foam mold 100 is preferably configured to open the mold by a set distance d during foam injection molding.

The operation of the first foam mold 100 will be described later.

Since the thermal conductivity of the base material 10 can be lowered by the plurality of insulating pores 11 formed therein, heat insulating performance is increased, thereby reducing heat loss of the radiant heater 20 .

The radiant heater 20 is mounted on the substrate and is a film-type heater that generates heat by electric energy from a vehicle battery.

As shown in FIG. 2, the radiant heater 20 receives power from a base part 21, an electrode part 22 formed on the upper surface of the base part 21, and the electrode part 22. It includes a heating unit 23 that generates heat, and a coverlay 14 covering the heating unit 23 .

The base part 21 is manufactured in the form of a film, and the electrode part 22, the heating part 23, and the coverlay 24 are laminated on the upper surface. The lower surface of the base part 21 may be attached to the substrate 10 constituting the vehicle interior material (eg, the door trim) and/or the heat insulating part 30 through an adhesive layer.

The base part 21 may be made of a material such as polyimide (PI), polyethyleneterephthalate (PET), or polyethylenenaphthalate (PEN), but is not limited thereto.

The electrode part 22 includes an anode and a cathode, and is formed in a pattern form on one surface of the base part 21 by an etching method. At this time, the electrode unit 22 may be connected to a control unit (not shown) and/or a power supply unit (not shown) of the heater structure to receive power and be controlled.

Both ends of the heating part 23 are electrically connected by contacting the positive and negative electrodes of the electrode part 22 , respectively. Through this, when power is applied to the electrode part 22, the heating part 23 functions as a resistor electrically connecting the anode and cathode of the electrode part 22 to generate heat.

The heating unit 23 may be made of a material such as carbon nanotube (CNT), but is not limited thereto. For example, the heating unit 23 may be made of a conductive material such as copper or silver in a paste form.

The coverlay 24 may have a structure in which it is laminated and interposed to cover not only the heating part 23 but also a part of the base part 21 (which may include a part of the electrode part 22), It may be laminated to each component via an adhesive layer. The fabric 40 may be attached to one surface of the coverlay 24 .

The coverlay 24 may be made of a material such as polyimide (PI), polyethyleneterephthalate (PET), or polyethylenenaphthalate (PEN), but is not limited thereto.

The heat insulating part 30 is configured to be interposed between the substrate 10 and the radiant heater 20, and prevents the substrate 10 from being damaged by the heat of the radiant heater 20 and prevents the substrate 10 from being damaged. ) serves to reduce heat loss of the radiant heater 20 due to heat transfer to the radiant heater 20 . The heat insulating part 30 is laminated or embedded on the upper surface of the substrate 10 . At this time, the heat insulating part 30 has a structure in which the radiant heater 20 is stacked on an upper surface thereof.

It is preferable that a plurality of air 31 is formed in the body of the heat insulating part 30 . In this case, it is more preferable that a plurality of air grooves 31 are formed on the upper surface of the heat insulating part 30 to communicate with the lower surface of the radiant heater 20 .

At this time, it is more preferable that the air groove 31 of the heat insulating part 30 is formed in a honeycomb structure. That is, as shown in FIG. 3, the air grooves 31 are formed in the shape of a hexagonal column, and a plurality of the air grooves 31 are formed adjacent to each other to form a honeycomb structure. Since the honeycomb structure has high rigidity in supporting vertical stress, the heat insulating part 30 can stably support the radiant heater 20 .

Meanwhile, the second foaming mold 200 having forming core pins 221 so that a plurality of air grooves 31 are formed on the upper surface of the heat insulating part 30 to communicate with the lower surface of the radiant heater 20. ) It can be manufactured by foam injection molding method using. At this time, the injection material of the foam injection molding method may use polyurethane (Polyurethane, PU) or the like, but is not limited thereto.

The operation of the second foam mold 100 will be described later.

Since the thermal conductivity of the heat insulating part 30 can be lowered by the plurality of air grooves 31 formed on the upper surface thereof, the heat insulating performance can be increased and the heat loss of the radiant heater 20 can be reduced. That is, in the heat insulator 30, the heat emitted to the lower surface of the radiant heater 20 is transferred to the air in the air groove 31 so that the thermal conductivity of the heat insulator 30 is higher than that of solids constituting the body of the heat insulator 30. The low air reduces heat loss due to heat conduction. In addition, since the air groove 31 of the heat insulating part 30 communicates with the lower surface of the radiant heater 20, the air in the air groove 31 directly contacts the lower surface of the radiant heater 20. In particular, the heat loss of the lower surface of the radiant heater 20 contacting the air of the air groove 31 is further reduced.

The fabric 40 is configured to surround the radiant heater 20 and the substrate 10 .

The fabric 40 may use fabric or leather made of a soft material, but is not limited thereto. For example, the fabric 40 may be replaced with a plate made of a rigid material surrounding the radiant heater 20 and the substrate 10 .

In the method for manufacturing a vehicle interior material having a radiant heater according to an embodiment of the present invention, the substrate 10 constituting a part of the vehicle interior material, the radiant heater 20 mounted on the substrate 10, and the substrate ( 10) A method for manufacturing a vehicle interior material including the heat insulating part 30 interposed between the radiant heater 20 and the fabric 40 surrounding the radiant heater 20 and the substrate 10 am. That is, the method for manufacturing a vehicle interior material having a radiant heater according to an embodiment of the present invention is a method for manufacturing a vehicle interior material including a radiant heater according to an embodiment of the present invention.

A method of manufacturing a vehicle interior material having a radiant heater according to an embodiment of the present invention includes forming a substrate (S10) and forming an insulator (S20).

In this case, the method for manufacturing a vehicle interior material having a radiant heater according to an embodiment of the present invention may further include mounting the radiant heater ( S30 ) and wrapping the fabric ( S40 ).

Hereinafter, the term "injection molding" is used in contrast to "extrusion molding", and the term "foaming molding" means "foaming injection molding" including a foaming process, in contrast to "general injection molding" without a foaming process. so it is used

Foaming injection molding methods include well-known chemical foaming injection molding methods and physical foaming injection molding methods that have already been commercialized. The chemical foaming injection molding method is a technique of forming bubbles in the resin by using a chemical foaming agent that reacts with the molten resin to generate gas, and the physical foaming injection molding method is a supercritical gas (N2, It is a technology to form a porous structure inside by mixing CO2).

The foam injection molding method is applied to both the base material molding step (S10) and the heat insulating part molding step (S20) below. In this case, both of the above two methods may be applied. In order to distinguish the following substrate molding step (S10) from the heat insulating part molding step (S20), the mold used in the substrate molding step (S10) is referred to as the first foam mold 100, and the heat insulating part molding step The mold used in (S20) is called the second foam mold 200.

In the base material molding step (S10), the base material 10 is foamed and injection-molded to form a plurality of insulating pores 11 inside the base material 10 using the first foaming mold 100. .

The first foam mold 100 used in the substrate molding step (S10) may include a fixed mold 110 and a movable mold 120 as shown in FIG. 5 .

In this case, in the substrate molding step (S10), the heat insulation is applied to the substrate 10 by injecting molten resin (injection material) into the cavity and then opening the first foam mold 100 by a set distance d. It is preferable to be configured to form pores (11).

More specifically, in the substrate molding step (S10), as shown in (a) of FIG. 5, molten resin is injected into the cavity in a state where the fixed mold 110 and the moving mold 120 are closed, When a predetermined time elapses after injection, the movable mold 120 is opened by a set distance d, as shown in FIG. 5(b). In this way, after the injection, the movable mold 120 is micro-opened to provide a space in the cavity where the molten resin can escape, thereby expanding the foaming space in the cavity so that air bubbles, that is, a plurality of the insulating pores 11 are formed in the resin. The substrate 10 can be obtained. That is, in the base material molding step (S10), the base material 10 on which the insulating pores 11 are formed is molded using the first foam mold 100 to which a core back method for micro-moulding is applied. . A number of foaming methods of the core-back method by fine mold opening are known through Korean Patent Publication No. 10-2014-0035945 and the like, and detailed description thereof will be omitted.

The molten resin (injection material) may use polypropylene (PP), polyamide (PA), etc., but is not limited thereto.

In the heat insulating part forming step (S20), the heat insulating part ( 30) is configured to foam injection molding.

The second foam mold 200 used in the heat insulation forming step (S20) may include an upper mold 210 and a lower mold 220.

In this case, in the forming of the heat insulating part (S20), the second foaming mold 200 having a forming core pin 221 on the cavity surface to form the heat insulating pores 31 of the heat insulating part 30 ) is preferably configured to use. At this time, more specifically, in the lower mold 220, a plurality of forming core pins 221 are formed to form the insulation pores 31 of the insulation part 30 on the cavity surface of the core. . The forming core pin 221 may be more preferably formed in a hexagonal column shape to form the insulated pores 31 of the insulated portion 30 into a honeycomb structure. In addition, the forming core pin 221 is formed in a cantilever shape on the cavity surface of the core of the lower mold 220 to form the air groove 31 with one end open, so that the air groove 31 is the heating element. It may be configured to be formed in communication with the lower surface of (20).

More specifically, in the heat insulation forming step (S20), as shown in (a) of FIG. 6, the substrate 10 manufactured in the substrate forming step (S10) is seated inside the upper mold 210. At this time, the second foam mold 200 is provided with an intake system for vacuum adsorbing the insert material to the inner wall of the upper mold 210. It may be configured to adsorb the substrate 10 . Subsequently, in the heat insulating part forming step (S20), as shown in (b) of FIG. 6, after the substrate 10 is inserted and seated in the upper mold 210, the upper mold 210 and the lower mold ( 220) is formed by injecting molten resin into the cavity in a mold-closed state to form the insulation part 30.

The molten resin (injection material) may use polyurethane (PU), etc., but is not limited thereto.

In the radiant heater mounting step (S30), after performing the base material forming step (S10) and the heat insulating part forming step (S20), the radiant heater 20 is coupled to the substrate 10 and the heat insulating part 30. It is configured to be mounted on a structure.

For example, in the radiant heater mounting step (S30), the lower surface of the base part 21 of the radiant heater 20 is attached to the substrate 10 constituting the interior material of the vehicle (eg, the door trim) and/or the insulation. It may be configured in such a way that the adhesive layer is attached to the unit 30 as a medium.

The fabric wrapping step (S40) is configured to wrap the radiant heater 20 and the substrate 10 with the fabric 40 after performing the radiant heater mounting step (S30).

For example, the fabric wrapping step ( S40 ) may be configured by attaching the fabric 40 to the radiant heater 20 and the substrate 10 via an adhesive layer.

As described above, the fabric 40 may use fabric or leather made of a soft material, but is not limited thereto.

As described above, the vehicle interior material having a radiant heater and the method for manufacturing the same according to the present invention lowers the thermal conductivity of the material (substrate and heat insulating part) by air, thereby improving insulation performance, thereby minimizing heat loss of the radiant heater and reducing power consumption. It can improve the applicability to electric vehicles by reducing power consumption and reducing power consumption to increase the efficiency of battery power use. It also shortens the time to reach the set temperature from the start of operation by increasing thermal efficiency through the reduction of heat loss. This can improve user satisfaction.

As described above, the present invention has been described with reference to the embodiments shown in the drawings, but this is only exemplary, and various modifications and equivalent other embodiments are possible based on common knowledge in the field to which the technology belongs. should understand Therefore, the true technical protection scope of the present invention is based on the claims to be described below, and should be determined based on the specific contents of the above-described invention.

The present invention relates to a vehicle interior material having a radiant heater and a method for manufacturing the same, and can be used in the industrial field related to vehicle interior materials.

10: registration
11: insulation porosity
20: radiant heater
21: base part
22: electrode part
23: heating part
24: coverlay
30: heat insulation
31: air groove
40: Fabric
100: first foaming mold
110: fixed mold
120: moving mold
200: 2nd foaming mold
210: upper mold
220: lower mold
221: forming core pin
S10: Substrate molding step
S20: Insulation molding step
S30: radiant heater mounting step
S40: fabric wrapping step

Claims (11)

A base material constituting a part of a vehicle interior material;
a radiant heater mounted on the substrate;
an insulator interposed between the substrate and the radiant heater; and
a fabric covering the radiant heater and the substrate;
including,
The above description is
A vehicle interior material having a radiant heater, characterized in that a plurality of insulation pores are formed therein.
The method of claim 1, wherein the substrate,
A vehicle interior material with a radiant heater, characterized in that it is manufactured by a foaming injection molding method using a first foaming mold to form the insulation pores therein.
The method of claim 2, wherein the first foam mold,
A vehicle interior material with a radiant heater, characterized in that it is configured to open the mold by a set distance during foam injection molding.
The method of claim 1, wherein the heat insulation unit,
A vehicle interior material with a radiant heater, characterized in that a plurality of air grooves are formed in the body.
The method of claim 4, wherein the heat insulation unit,
A vehicle interior material with a radiant heater, characterized in that a plurality of air grooves are formed on an upper surface thereof in a structure in which a plurality of air grooves communicate with a lower surface of the radiant heater.
The method of claim 5, wherein the heat insulation unit,
A vehicle interior material having a radiant heater, characterized in that the air groove is formed in a honeycomb structure.
The method of claim 5, wherein the heat insulation unit,
A vehicle with a radiant heater, characterized in that the air grooves are manufactured by a foaming injection molding method using a second foaming mold having forming core pins so that a plurality of air grooves are formed on the upper surface thereof to communicate with the lower surface of the radiant heater. interior material.
Manufacturing an interior material for a vehicle including a substrate constituting a part of the interior material for a vehicle, a radiant heater mounted on the substrate, an insulator interposed between the substrate and the radiant heater, and a fabric covering the radiant heater and the substrate In the method for manufacturing a vehicle interior material having a radiant heater for
a substrate molding step configured to perform foam injection molding of the substrate using a first foaming mold to form a plurality of heat insulating pores inside the substrate; and
a heat insulating part molding step configured to foam-inject-mold the heat insulating part by using a second foaming mold using the base material having the heat insulating pores formed in the base material molding step as an insert;
A method for manufacturing a vehicle interior material having a radiant heater, comprising:
The method of claim 8, wherein the substrate molding step,
A method of manufacturing a vehicle interior material having a radiant heater, characterized in that the insulation pores are formed in the substrate by a method of injecting molten resin into the cavity and then opening the first foam mold by a set distance.
The method of claim 8, wherein the step of forming the heat insulating part,
The method of manufacturing a vehicle interior material having a radiant heater, characterized in that the second foaming mold having a forming core pin on a cavity surface thereof is used to form the insulation pores of the insulation portion.
According to claim 8,
a radiant heater mounting step configured to mount the radiant heater to a coupling structure between the substrate and the heat insulation unit; and
a fabric wrapping step configured to wrap the radiant heater and the substrate with the fabric;
A method of manufacturing a vehicle interior material having a radiant heater, characterized in that it further comprises.

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