JP2014046663A - Vehicle interior equipment and method for manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for manufacturing vehicle interior equipment at a low cost without using a resin film in an integral molding method.SOLUTION: A method for manufacturing vehicle interior equipment comprises: a compression step of increasing the density of a slab foam layer 32a by heating and compressing a skin member 30 having a skin layer 31 and the slab foam layer 32a and cooling it in a compressed state; an arrangement step of arranging the skin member 30 to a cavity 512 of a molding die 51 with the high density slab foam layer 32b set inside; a foam molding step of injecting a liquid foam resin material 21 into the cavity 512 to perform foam molding; and a removing step of removing a molding 10 obtained by integrating the skin member 30 with a foamed molding 20 from a molding die 51.

Description

  The present invention relates to a vehicle interior product in which a skin member is integrally molded on the surface of a foam molded article, and a method for manufacturing the same.

  For example, a headrest of an automobile includes a foamed molded body, a skin member that covers the surface of the foam molded body, and a stay member that attaches the headrest to a seat back. As a method for manufacturing a headrest, first, a method in which a stay member and a foamed molded body are integrally formed, and then a separately formed bag-shaped skin member is coated on the molded product. However, according to the manufacturing method, there are problems that man-hours are increased by the coating step, and deformation is likely to occur during coating. Therefore, in recent years, a method of foam molding by injecting a foamed resin material inside the skin member with the bag-shaped skin member placed in the mold and the stay member inserted is the mainstream. (For example, refer to Patent Documents 1 and 2).

JP 2010-105214 A JP 2003-048224 A Japanese Patent Laid-Open No. 2002-210271 Japanese Unexamined Patent Publication No. Hei 6-298888 JP-A-8-34871

  The skin member is formed by laminating a slab foam layer made of slab urethane or the like on the back surface of a skin layer made of synthetic leather or fabric. When the slab foam layer is laminated, the tactile sensation is improved, the shape retention is improved, and the skin member is easily set in the mold. However, when a liquid foamed resin material is injected into the inner side (slab foam layer side) of the skin member having the two-layer structure and foamed, the foamed resin material is impregnated into the slab foam layer by the foaming pressure. When the foamed resin material is impregnated, the cushioning property inherent to the slab foam layer is deteriorated and does not return to the original state. Therefore, impregnation of the foamed resin material is suppressed by interposing a resin film through which the foamed resin material does not permeate between the slab foam layer and the foamed resin material. That is, the resin film is laminated on the back surface (the surface opposite to the skin layer) of the slab foam layer, so that the skin member has a three-layer structure of the skin layer, the slab foam layer, and the resin film layer.

  A urethane film or a polyethylene film is used as the resin film. However, these films are expensive and therefore expensive. There is also a two-layer slab foam material in which closed cells and open cells are laminated, but this also increases the cost. Therefore, there is a need for a method that can suppress impregnation of the foamed resin material without using a resin film or a two-layer slab foam material.

  This invention is made | formed in view of such a situation, and makes it a subject to provide an inexpensive vehicle interior goods without having a resin film. Another object of the present invention is to provide a method for producing a vehicle interior product at a low cost without using a resin film in the integral molding method.

  (1) In order to solve the above-mentioned problem, the method for manufacturing a vehicle interior product according to the present invention is to heat and compress a skin member having a skin layer and a slab foam layer, and then cool the slab by cooling in a compressed state. A compression step for densifying the foam layer, a placement step for placing the skin member in the cavity of the mold with the slab foam layer inside, and a liquid foamed resin material is injected into the cavity for foam molding The method includes a foam molding step and a step of taking out a molded product in which the skin member and the foam molded body are integrated from the mold.

  In the compression step, when the slab foam layer is compressed at a high temperature and cooled as it is, the cells of the slab foam layer are fixed in a crushed state. Thereby, the thickness of a slab foam layer becomes small and a density becomes high. When the density of the slab foam layer is high, even if the foamed resin material is pressed against the slab foam layer, it is difficult to impregnate. Therefore, according to the method for manufacturing a vehicle interior product of the present invention, it is possible to manufacture the vehicle interior product by an integral molding method without using a resin film that has been conventionally required for suppressing impregnation. In this case, since the number of parts is reduced by the amount of the resin film, the manufacturing cost can be reduced.

  Compression reduces the thickness of the slab foam layer. For this reason, compared with the conventional skin member, the thickness as the whole skin member becomes small. Thereby, since the bulk when the skin members are stacked is reduced, the number of sheets that can be conveyed at a time increases, and the number of sheets that can be stacked and cut at a time also increases. Further, for example, when the headrest is integrally formed, it is necessary to sew pieces of the cut skin member together to form a bag. In this case, if the thickness of the skin member is small, it becomes easy to sew. Further, the fitting property between the skin member and the stay member is also improved. Further, in the vehicle interior product obtained, the air permeability is improved by the absence of the resin film. For this reason, the manufacturing method of the vehicle interior goods of this invention is suitable as a manufacturing method of a headrest.

  According to the method for manufacturing a vehicle interior product of the present invention, the foamed molded product and the skin member can be integrally joined. For this reason, compared with the conventional method which coat | covers a skin member on a foaming molding, in the vehicle interior goods obtained, wrinkles and a float of a skin member can be decreased.

(2) Preferably, in the configuration of (1), in the compression step, the flow resistance per unit thickness of the slab foam layer before compression is 2000000 N · s / m ⁴ or less. Good.

The flow resistance per unit thickness (Rf) is an index representing the difficulty of air flow in the material, and is calculated by the following formula (I).
Rf = ΔP / (v · d) (I)
[ΔP: differential pressure generated before and after air passes through the material (N / m ² ), v: air flow velocity (m / s), d: material thickness (m)]
In this specification, the value measured by the flow resistance measuring device “MFR-02” manufactured by Nittobo Acoustic Engineering Co., Ltd. is adopted as the flow resistance per unit thickness of the slab foam layer. The flow resistance measuring apparatus measures the flow resistance by a direct current method based on ISO 9053.

  For example, as described in Patent Document 3, if a foam sheet made of closed cells is used, impregnation of the foamed resin material can be suppressed without using a resin film. However, the closed cell urethane sheet is more expensive than the open cell slab urethane. For this reason, the problem of the present invention that reduces the manufacturing cost of vehicle interior parts cannot be solved.

In this regard, according to this configuration, as the slab foam layer, an open cell (including what is referred to as a semi-closed cell) including a flow resistance per unit thickness of 2000000 N · s / m ⁴ or less is also included. Use. Therefore, a vehicle interior product can be manufactured by an integral molding method using an open cell body that is relatively inexpensive and easily available. As will be described later in the configuration (4), when it is considered to restore the shape of the slab foam layer after foam molding to produce a vehicle interior with good tactile sensation, the flow resistance is 100,000 N -An open cell body of s / m ⁴ or less, further 50000 N · s / m ⁴ or less is suitable.

  (3) Preferably, in the configuration of (1) or (2), in the compression step, the compression rate of the slab foam layer is 50% or more.

According to this configuration, the amount of the foamed resin material impregnated into the slab foam layer can be further reduced. The compression rate of the slab foam layer is calculated by the following formula (II).
Compression rate (%) = (Thickness before compression−Thickness after compression) / Thickness before compression × 100 (II)
(4) Preferably, in any one of the constitutions (1) to (3), after the taking out step, the slab foam layer of the molded product is heated to restore the shape of the slab foam layer. It is better to have a configuration having a process.

  As described in (1) above, the foamed resin material is difficult to impregnate the slab foam layer. For this reason, the shape of the slab foam layer can be restored after foam molding. That is, when the slab foam layer is heated, the slab foam layer expands in the thickness direction and is restored to the original state. Thereby, the original cushioning property of the slab foam layer can be recovered.

  Therefore, according to this configuration, it is possible to manufacture a vehicle interior product having a good tactile feel by an integral molding method without using a resin film. Heating in the restoration process may be performed on the entire slab foam layer, or may be performed only on a specific portion. For example, the thickness of the slab foam layer can be changed by adjusting the presence or absence of heating or the strength of heating. By utilizing this fact, characters and patterns can be exposed on the surface of the slab foam layer and thus on the surface of the skin member. Moreover, by heating partially, according to the use and shape of vehicle interior goods, only a required part may be made thick and soft, and other parts may be left thin and hard. Further, the slab foam layer expands to extend the skin layer from the inside. For this reason, even if wrinkles occur in the skin layer, they can be eliminated to some extent by stretching.

  (5) Preferably, in the configuration of (4) above, the heating temperature of the slab foam layer in the restoration step is preferably 110 ° C. or higher.

  In order to restore the shape of the slab foam layer, it is necessary to heat the slab foam layer to a temperature exceeding the restoration temperature specific to the material of the slab foam layer. On the other hand, the heating temperature needs to be lower than the melting point of the foam molded body so that the foam molded body does not deform during heating. According to this configuration, the heating operation can be performed easily and in a short time without using a hot air, steam, or the like to deform the foamed molded body.

  (6) Preferably, in any one of the constitutions (1) to (5), the slab foam layer is made of slab urethane, the foamed resin material is a foamed urethane resin material, and the foamed molded body is urethane foam. It is better to have a configuration consisting of

  In the manufacturing method described in Patent Document 3, a foamed polyethylene sheet is used as a foam sheet made of closed cells. However, the foamed polyethylene sheet is difficult to adhere to urethane foam (foamed molded article). For this reason, in the manufacturing method of patent document 3, in order to integrate both, the corona treatment etc. are separately given to the foamed polyethylene sheet. Therefore, the manufacturing process is increased and the cost is increased.

According to this configuration, slab urethane that is relatively inexpensive and easily available is used as the slab foam layer. Adhesion between slab urethane and urethane foam to be foam-molded is good. Therefore, the surface treatment of slab urethane is not necessary. As the slab urethane, an open cell body having a density of about 10 to 100 kg / m ³ and a flow resistance per unit thickness of 2000000 N · s / m ⁴ or less is suitable.

  As the skin layer, fabric such as woven fabric, knitted fabric, and non-woven fabric, synthetic leather (synthetic leather, artificial leather), genuine leather, or the like may be used. It is desirable that the skin layer and the slab foam layer are integrally joined by, for example, laminating.

  (7) A vehicle interior product of the present invention includes a skin member having a skin layer and a slab foam layer made of slab urethane, and a foam molded body integrally formed with the slab foam layer and made of urethane foam. Features.

  Conventionally, the vehicle interior product of the present invention does not have the resin film that is necessary for suppressing the impregnation of the foamed resin material. Therefore, the number of parts is reduced by the amount of the resin film, which is inexpensive. In addition, since there is no resin film, air permeability is improved. In addition, slab urethane is relatively inexpensive and easy to obtain. Slab urethane has good adhesion to urethane foam.

  In the vehicle interior of the present invention, the slab urethane (slab foam layer) and the urethane foam (foamed molded body) are integrally joined. For this reason, compared with the conventional method which coat | covers a skin member on a foaming molding, there are few wrinkles and a float of a skin member.

  (8) Preferably, in the configuration of the above (7), the slab foam layer has a flexible region having a 25% hardness of 20 N or more and 500 N or less.

  In the flexible region, the original cushioning property of the slab foam layer is exhibited. For this reason, in the skin member, the tactile sensation of the portion corresponding to the flexible region is softer than the tactile sensation of the other portions. The flexible region may be disposed on the entire slab foam layer or may be disposed on a part thereof. That is, the slab foam layer may be flexible as a whole or may be partially flexible. What is necessary is just to perform 25% hardness of a slab foam layer according to D method of the hardness test prescribed | regulated to JISK6400-2: 2012.

It is a perspective view of the headrest of an embodiment. It is an up-down direction sectional view of the headrest. It is a schematic diagram of a compression process. It is sectional drawing of the skin member after a compression process. It is sectional drawing of the shaping | molding die at the time of foaming resin material injection | pouring in a foam molding process. It is sectional drawing of the shaping | molding die at the time of completion of foam molding in the process. It is a schematic diagram of a restoration process.

  Hereinafter, an embodiment of a vehicle interior product and a method for manufacturing the same according to the present invention will be described. In the present embodiment, the vehicle interior product of the present invention is embodied as an automobile headrest.

<Configuration of headrest>
First, the configuration of the headrest of this embodiment will be described. In FIG. 1, the perspective view of the headrest of this embodiment is shown. FIG. 2 shows a vertical sectional view of the headrest. In FIG. 1 and FIG. 2, the direction is defined with reference to the case where the rear is viewed from the front of the vehicle. As shown in FIGS. 1 and 2, the headrest 1 includes a foamed molded body 20, a skin member 30, and a pair of stay members 40 and 41.

  The foam molded body 20 is made of urethane foam. The skin member 30 has a bag shape and covers the surface of the foam molded body 20. The foam molded body 20 and the skin member 30 are integrally joined without an adhesive layer. The skin member 30 includes a skin layer 31 and a slab foam layer 32c. The skin layer 31 is made of a woven fabric. The slab foam layer 32 c is made of slab urethane and is laminated on the back surface of the skin layer 31. In the entire slab foam layer 32c, the 25% hardness is 380N. That is, in the headrest 1, the entire slab foam layer 32c is included in the flexible region of the present invention. The skin layer 31 and the slab foam layer 32c are integrally joined by lamination.

  Each of the pair of stay members 40 and 41 is made of metal and has a cylindrical shape. Each of the stay members 40 and 41 protrudes from the lower edge of the foam molded body 20. The stay members 40 and 41 are arranged side by side in the left-right direction. The lower ends of the stay members 40 and 41 are detachably inserted into the insertion holes 90 on the upper edge of the seat back 9, respectively.

<Manufacturing method of headrest>
Next, the manufacturing method of the headrest of this embodiment is demonstrated. The manufacturing method of the headrest of this embodiment has a compression process, an arrangement process, a foam molding process, a removal process, and a restoration process. In FIG. 3, the schematic diagram of a compression process is shown. In FIG. 4, sectional drawing of the skin member after a compression process is shown. FIG. 5 shows a cross-sectional view of the molding die when the foamed resin material is injected in the foam molding process. FIG. 6 shows a cross-sectional view of the mold when foam molding is completed in the same process. FIG. 7 shows a schematic diagram of the restoration process.

In the compression step, after the skin member 30 is heated and compressed, the slab foam layer 32a is densified by cooling in the compressed state. First, as shown in FIG. 3, the skin member 30 is disposed between the press devices 50a and 50b. The skin member 30 includes a skin layer 31 and a slab foam layer 32a. The skin layer 31 and the slab foam layer 32a are integrally joined by lamination. The slab foam layer 32a is made of slab urethane having a density of 30 kg / m ³ and a flow resistance of 16588 N · s / m ⁴ per unit thickness. The press devices 50a and 50b are heated to about 170 ° C. Next, the pressing device 50a is moved downward to compress the skin member 30 with a pressure of about 200 kPa. And after cooling, the press apparatus 50a is moved upwards and the skin member 30 is taken out. In this way, the slab foam layer 32a is crushed and densified. That is, as shown in FIG. 4, in the skin member 30 after compression, the thickness of the slab foam layer 32b is smaller than the thickness of the slab foam layer 32a before compression (indicated by a dotted line in the figure). Specifically, the thickness of the slab foam layer 32b after compression is set to about 1/5 of the thickness of the slab foam layer 32a before compression (compression rate is about 86%). Incidentally, the flow resistance per unit thickness of the slab foam layer 32b after compression was 2015117 N · s / m ⁴ .

  In the placing step, the compressed skin member 30 is placed in the cavity 512 of the mold 51 with the slab foam layer 32b inside. As shown in FIG. 5, the mold 51 includes a rear mold 510 and a front mold 511. The rear mold 510 and the front mold 511 are connected to each other by a hinge portion (not shown) so as to be opened and closed. When the mold is clamped, the cavity 512 is defined by the recess formed in each of the rear mold 510 and the front mold 511.

  After the compression step, the skin member 30 is cut and sewn into a bag shape along the mold surface of the cavity 512. Then, the skin member 30 is disposed in the cavity 512 so that the slab foam layer 32b is on the inner side. The stay member 40 is inserted from the opening of the skin member 30. Although not shown, the stay member 41 is similarly inserted from the opening of the skin member 30. Upper portions of the stay members 40 and 41 protruding from the skin member 30 are fixed by mold clamping.

  In the foam molding process, the liquid foamed urethane resin material 21 is injected into the inside of the skin member 30 from the opening through an injection member (not shown) and foam-molded. When the foaming and curing are completed, as shown in FIG. 6, the molded product 10 in which the foam molded body 20 is integrally formed on the inner surface (slab foam layer 32 b) of the skin member 30 and the stay members 40 and 41 are also integrated. Is completed.

  In the removal step, the mold 51 is opened and the molded product 10 is removed. As shown in FIG. 7, in the molded article 10, the thickness of the slab foam layer 32b remains smaller than the thickness of the slab foam layer 32a before being compressed in the compression step. In this case, the cushioning property inherent to the slab foam layer 32a is not expressed. For this reason, the skin member 30 becomes hard and a tactile feeling will fall.

  Therefore, in the restoration process, the slab foam layer 32b of the molded product 10 is heated to restore the shape of the slab foam layer 32b. That is, the thickness of the slab foam layer 32b is restored to the original state (thickness indicated by the dotted line in FIG. 4). Specifically, as indicated by white arrows in FIG. 7, steam of about 150 ° C. is sprayed from the outside of the molded article 10 for several seconds to heat the slab foam layer 32 b. Then, the slab foam layer 32b expands in the thickness direction, and becomes a slab foam layer 32c having a thickness close to the thickness before compression. In this way, the headrest 1 (see FIG. 2) is manufactured.

<Effect>
Next, the effects of the headrest and the manufacturing method thereof according to this embodiment will be described. Conventionally, the headrest 1 of the present embodiment does not have a resin film that is necessary for suppressing impregnation of the urethane foam resin material 21. Therefore, the number of parts is reduced by the amount of the resin film, which is inexpensive. In addition, since there is no resin film, air permeability is improved. The slab foam layer 32c is made of slab urethane that is relatively inexpensive and easily available. Slab urethane has good adhesion to urethane foam (foamed molded body 20). In the headrest 1, the slab foam layer 32c and the foamed molded body 20 are integrally joined. For this reason, compared with the conventional method which coat | covers a skin member on a foaming molding, there are few wrinkles and a float of the skin member 30. FIG.

  In the manufacturing method of the present embodiment, the skin member 30 is compressed in advance to increase the density of the slab foam layer 32a. Since the skin member 30 including the high-density slab foam layer 32b is used, even if the urethane foam resin material 21 is pressed against the slab foam layer 32b during foam molding, it is difficult to impregnate. Therefore, according to the manufacturing method of the present invention, the headrest 1 can be manufactured by an integral molding method without using a resin film that has been conventionally required for suppressing impregnation. In this case, since the number of parts is reduced by the amount of the resin film, the part cost can be reduced. Moreover, the foaming molding 20 and the skin member 30 can be integrally joined. For this reason, compared with the conventional method which coat | covers a skin member on a foaming molding, the wrinkle and the float of the skin member 30 in the headrest 1 can be decreased.

  The thickness of the slab foam layer 32b is reduced by the compression. For this reason, compared with the conventional skin member, the thickness as the whole skin member 30 becomes small. Thereby, since the bulk when the skin member 30 is laminated | stacked becomes small, the number of sheets which can be conveyed at a time increases, and the number of sheets which can be cut | stacked at once will also increase. In addition, when the cut pieces of the skin member 30 are sewn together to form a bag shape, it becomes easy to sew.

In the skin member 30, the density of the slab foam layer 32a before compression is 30 kg / m ³ , and the flow resistance per unit thickness is 16588 N · s / m ⁴ . In the manufacturing method of the present embodiment, the headrest 1 can be manufactured by an integral molding method using open cell slab urethane that is relatively inexpensive and easily available.

  In the compression step, the compression rate of the slab foam layer 32b is about 86%. Thereby, the slab foam layer 32b is sufficiently densified. Therefore, the impregnation amount of the urethane foam resin material 21 can be reduced.

  In the manufacturing method of the present embodiment, the slab foam layer 32b is restored after foam molding. Thereby, the original cushioning property of the slab foam layer 32a can be recovered. Therefore, according to the manufacturing method of the present embodiment, the headrest 1 having good tactile sensation can be manufactured by an integral molding method without using a resin film. The slab foam layer 32 b is heated by spraying steam at about 150 ° C. for several seconds from the outside of the molded product 10. Then, the slab foam layer 32b expands in the thickness direction, and becomes a slab foam layer 32c having a thickness close to the thickness before compression. Thereby, the slab foam layer 32b can be easily restored in a short time without deforming the foamed molded body 20. Moreover, the skin layer 31 is extended | stretched from an inner side when the slab foam layer 32b expand | swells. Thereby, even if wrinkles occur in the skin layer 31, it can be solved to some extent by stretching.

<Others>
The embodiments of the vehicle interior product and the manufacturing method thereof according to the present invention have been described above. However, the embodiment of the vehicle interior product and the manufacturing method thereof according to the present invention is not limited to the above-described embodiment. Various modifications and improvements that can be made by those skilled in the art are also possible.

For example, as a slab foam layer of an outer skin member, as a value before compression, the density is about 10 to 100 kg / m ³ , and the flow resistance per unit thickness is made of open cells having a flow resistance of 2000000 N · s / m ⁴ or less. Slab urethane is preferred. A slab urethane having a flow resistance of 100,000 N · s / m ⁴ or less, more preferably 50000 N · s / m ⁴ or less is more preferable. As the skin layer, in addition to woven fabric, fabric such as knitted fabric and nonwoven fabric, synthetic leather (synthetic leather, artificial leather), genuine leather, and the like can be used. As a method of joining the skin layer and the slab foam layer, each layer may be bonded with an adhesive in addition to the laminating process.

  What is necessary is just to determine the heating temperature and pressing force in a compression process suitably according to the kind of slab foam layer. For example, the heating temperature may be about 120 ° C. to 230 ° C. The pressing force may be about 0.1 to 50 MPa. From the viewpoint of reducing the impregnation amount of the foamed resin material, the compression rate of the slab foam layer is desirably 50% or more. It is more preferable that the compression rate is 80% or more, and further about 90%.

  In the said embodiment, the shape of the slab foam layer was decompress | restored after foam molding (restoration process). However, the restoration process is not always necessary. That is, in the vehicle interior product, the slab foam layer may be in a compressed state. When the shape of the slab foam layer is restored, the heating condition of the slab foam layer may be a temperature that exceeds the restoration temperature specific to the material of the slab foam layer and that does not deform the foamed molded product. For example, 110 ° C. or more and 200 ° C. or less is suitable. What is necessary is just to determine a heating time according to the grade which recovers the thickness of a slab foam layer. If it is heated at the above preferred temperature, a few seconds to a few tens of seconds are sufficient. As a heating method, hot air may be blown in addition to steam. In the said embodiment, the whole slab foam layer was heated from the outer side of a headrest. However, the part to be heated (the part to restore the shape) may be the whole or a part of the slab foam layer (including the skin layer). Further, the degree of recovery of the slab foam layer may be varied by changing the heating temperature and the heating time. Heating increases the thickness of the slab foam layer and restores cushioning properties. It is desirable that the slab foam layer has a flexible region whose 25% hardness is 20N or more and 500N or less, for example.

  In the said embodiment, the vehicle interior goods of this invention were embodied as a headrest of a motor vehicle. However, the vehicle interior product of the present invention can be embodied as various parts that are exposed in the vehicle interior, such as a door armrest, a seat armrest, and an instrument panel, in addition to the headrest.

1: headrest (vehicle interior product), 10: molded product, 20: foamed molded product, 21: foamed urethane resin material, 30: skin member, 31: skin layer, 32a, 32b, 32c: slab foam layer, 40, 41 : Stay member, 50a, 50b: Press device, 51: Mold, 510: Rear mold, 511: Front mold, 512: Cavity, 9: Seat back, 90: Insertion hole.

Claims (8)

After heating and compressing a skin member having a skin layer and a slab foam layer, the compression process of densifying the slab foam layer by cooling in a compressed state;
An arrangement step of arranging the skin member in the cavity of the mold with the slab foam layer inside;
A foam molding step of injecting a liquid foam resin material into the cavity and foam molding;
A step of taking out the molded product in which the skin member and the foam molded body are integrated from the mold; and
A method for manufacturing a vehicle interior product, comprising: 2. The method for manufacturing a vehicle interior product according to claim 1, wherein, in the compression step, a flow resistance per unit thickness of the slab foam layer before compression is 2000000 N · s / m ⁴ or less.   The method for manufacturing a vehicle interior product according to claim 1 or 2, wherein the compression rate of the slab foam layer is 50% or more in the compression step.   The manufacturing of the vehicle interior product according to any one of claims 1 to 3, further comprising a restoration step of restoring the shape of the slab foam layer by heating the slab foam layer of the molded product after the removing step. Method.   The method for manufacturing a vehicle interior product according to claim 4, wherein a heating temperature of the slab foam layer in the restoration step is 110 ° C or higher. The slab foam layer is made of slab urethane,
The method of manufacturing a vehicle interior product according to any one of claims 1 to 5, wherein the foamed resin material is a foamed urethane resin material, and the foamed molded body is made of urethane foam. A skin member having a skin layer and a slab foam layer made of slab urethane;
A foam molded body formed of urethane foam, integrally formed with the slab foam layer;
A vehicle interior product comprising:   The vehicle interior part according to claim 7, wherein the slab foam layer has a flexible region whose 25% hardness is 20N or more and 500N or less.

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