JP2001277400A - Composite molding and manufacturing method for the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a composite molding capable of reducing in weight and cost and a method for manufacturing the same. SOLUTION: The composite molding 1 comprises an in-mold foamed molding 2, a thermoplastic resin skin material 3 adhered to a surface 2a of the molding 2, and at least one type of skin material 4 adhered to a surface 3a of the material 3. The method for manufacturing the composite molding 1 comprises the steps of disposing the thermoplastic resin skin material 3 in any a of two molds A and B for constituting a mold C, clamping the molds, and then foam molding in a mold 7 to fusion-bond to integrate the molding 2 with the material 3. The method further comprises the steps of previously disposing at least one type of the skin material 4 in the one mold A before disposing the skin material 3, and fusion-bonding to integrate the material 3 with the material 4 simultaneously upon foam molding or before the foam molding.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite molded article including an in-mold foam molded article, a thermoplastic resin skin material, and a skin material, which is used for, for example, interior materials of automobiles, and a method of manufacturing the same.

[0002]

2. Description of the Related Art As a conventional composite molded body of this type, there is, for example, an interior material of an automobile. In general, this interior material is composed of a panel-shaped or skin-shaped synthetic resin injection-molded product or an interior material body having a skin adhered to the surface of a wooden base material, and a panel-shaped or skin-shaped synthetic resin injection-molded product or wood-based material. And a design member in which a skin material such as a woven fabric is adhered to the surface of the base material, and the design member is attached to a predetermined position of the interior material body.

[0003]

However, such an interior material has a problem that the weight is large because a synthetic resin injection molded article or the like is used for the interior material main body and the design member. In addition, since the interior material main body and the design member must be separately manufactured and then the design member needs to be attached to the interior material body, there is a problem that the cost is high.

[0004] The present invention has been made in view of the above problems, and an object of the present invention is to provide a composite molded body that can be reduced in weight and cost, and a method of manufacturing the same.

[0005]

In order to achieve the above object, a composite molded article according to claim 1 comprises an in-mold foam molded article and a thermoplastic resin skin material adhered to the surface of the in-mold foam molded article. And at least one kind of skin material attached to the surface of the thermoplastic resin skin material.

The composite molded article according to the second aspect is obtained by fusing and integrating the in-mold foam molded article and the thermoplastic resin skin material.

A third aspect of the present invention is a composite molded article in which the thermoplastic resin skin material and the skin material are fused and integrated.

[0010] In the composite molded article according to the fourth aspect, the surface properties of the skin material are different from the surface properties of the thermoplastic resin skin material.

In the composite molded article according to the fifth aspect, the material of the skin material is different from the material of the thermoplastic resin skin material.

[0010] In the composite molded article according to claim 6, the skin material is a woven fabric, a knitted fabric, or a nonwoven fabric.

[0011] In the composite molded article according to claim 7, the skin material is made of a thermoplastic resin.

In the composite molded product according to the present invention, the in-mold foam molded product, the thermoplastic resin skin material, and the skin material are made of an olefin resin.

According to a ninth aspect of the present invention, at least one of the thermoplastic resin skin material and the skin material is surface-treated.

According to a tenth aspect of the present invention, at least a part of an edge of the skin material is inserted into a groove formed on a surface of the thermoplastic resin skin material.

In a preferred embodiment, a backing material is laminated on the back surface of the skin material.

In a twelfth aspect of the present invention, the backing material is a crosslinked foam.

In the composite molded article according to the present invention, the backing material is made of a thermoplastic resin.

In the composite molded article according to the present invention, the backing material is made of an olefin resin.

According to a fifteenth aspect of the present invention, the olefin resin is a polypropylene resin.

[0020] The composite molded product according to claim 16 is an interior material of an automobile, a ship, a train, or an aircraft.

In the method for manufacturing a composite molded article according to a seventeenth aspect, the thermoplastic resin skin material is disposed on one of the two molds constituting the molding die, and the mold is clamped. By foam molding, a method of manufacturing a composite molded body by fusing and integrating the formed in-mold foam molded body and the thermoplastic resin skin material, before arranging the thermoplastic resin skin material, At least one kind of skin material is previously arranged in the one mold, and the thermoplastic resin skin material and the skin material are fused and integrated simultaneously with or before the foam molding.

[0022]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, a composite molded article 1 according to the first embodiment includes an in-mold foam molded article 2, a thermoplastic resin skin material 3 attached to a surface 2 a of the in-mold foam molded article 2, And a skin material 4 attached to the surface 3a of the thermoplastic resin skin material 3.

The in-mold foam molded article 2 is obtained by subjecting foam beads made of a thermoplastic resin to foam molding (in-mold foaming) in a mold having a predetermined shape. As the expanded beads, various types of conventionally known beads made of an olefin resin, a styrene resin, or the like can be used. When the expansion ratio at the time of expanding the expanded beads in the mold is smaller than 3 times, the cushioning property and the like of the formed in-mold foamed article 2 tend to be reduced.
If it is larger than 2 times, the in-mold foam molded article 2 tends to be too soft and the strength or the like tends to be reduced. Therefore, it is 3 to 60 times, preferably 5 to 50 times, more preferably 8 to 45 times, particularly preferably 10 to 45 times. Desirably 35 times. As such foam beads, for example, Eperan PP (trade name, manufactured by Kaneka Chemical Co., Ltd.) or the like can be preferably used.

The thermoplastic resin skin material 3 is formed into a sheet having a predetermined thickness from, for example, a vinyl chloride resin or an olefin resin such as a polyethylene resin or a polypropylene resin. It is affixed to the surface 2a. The thermoplastic resin skin material 3 may be adhered to the in-mold foam molded article 2 with an adhesive or the like. However, when the thermoplastic resin skin material 3 is integrated by fusion, it can be easily manufactured by simultaneous integral molding. There is an advantage that it can be achieved. In order to fuse and integrate, a hot-melt adhesive, a thermoplastic resin sheet, or a crosslinked or non-crosslinked thermoplastic resin having a thermal fusion ability to both the in-mold foam molded body 2 and the thermoplastic resin skin material 3 In addition to coating or laminating a foam sheet in advance, the in-mold foam molded body 2 and the thermoplastic resin skin material 3 are made of thermoplastic resin having the same or similar composition, and these are directly melted by heat. May be worn.

The skin material 4 is formed of an appropriate sheet material having a predetermined thickness, and is attached to the surface 3 a of the thermoplastic resin skin material 3. When the skin material 4 is also fused and integrated with the thermoplastic resin skin material 3, as described above, it can be easily manufactured by simultaneous integral molding, and thus there is an advantage that cost can be reduced. If the surface properties of the skin material 4 are different from the surface properties of the thermoplastic resin skin material 3, the decorative material can be easily imparted because the skin material 4 can be visually recognized separately from the thermoplastic resin skin material 3. There are advantages. In addition, “the surface texture is different” means that the color, pattern, grain pattern,
It means that at least one of the appearance, feel, texture, and the like of the weaving type and the knitting type is different.

Further, when the material of the skin material 4 is different from the material of the thermoplastic resin skin material 3, there is an advantage that these surface properties can be easily made different. When the skin material 4 is a woven fabric, a knitted fabric, or a nonwoven fabric, there is an advantage that decorativeness can be more effectively imparted. When the skin material 4 is made of a thermoplastic resin, it is directly applied to the thermoplastic resin skin material 3.
There is an advantage that heat fusion can be performed. Note that the type of the skin material 4 is not limited to one type as in this embodiment, and two or more types having different surface properties or the like may be pasted at a predetermined position in a predetermined size. Also, the number of the same type of skin material 4 is not particularly limited, and a predetermined number may be attached as needed.

Here, when the in-mold foam molded article 2, the thermoplastic resin skin material 3, and the skin material 4 are made of an olefin resin, there is an advantage that recycling is easy because they are so-called all olefins. When the olefin resin is a polypropylene resin, there is an advantage that durability and the like are good. Examples of the polypropylene resin include propylene homopolymer, ethylene-propylene random copolymer, ethylene-propylene block copolymer, ethylene-propylene-butene random terpolymer, propylene-vinyl chloride copolymer, and propylene. -Butene copolymer, propylene-maleic anhydride copolymer and the like, and these can be used alone or in combination of two or more. The polypropylene-based resin is preferably in a non-crosslinked state, but may be crosslinked by peroxide, radiation or the like. Further, a mixture of a polypropylene resin and another thermoplastic resin can also be used. Examples of such a thermoplastic resin include low-density polyethylene, linear low-density polyethylene, vinyl aromatic polymer, polybutene, and ionomer. The blending amount of the thermoplastic resin is preferably 20 parts by weight or less, more preferably 5 to 10 parts by weight based on 100 parts by weight of the polypropylene resin.

When at least one of the thermoplastic resin skin material 3 and the skin material 4 is surface-treated, there is an advantage that light resistance, scratch resistance and the like can be improved. Such surface treatments include, for example, surface reactions with chemicals,
Examples include chemical treatment such as grafting on a surface of a monomer or a polymer and application of a thin film, and physical treatment such as mechanical roughening, plasma treatment, ultraviolet irradiation, flame treatment, and ion beam irradiation.

At least a part of the edge 4c of the skin material 4 is
When inserted into the groove portion 5 formed on the surface 3a of the thermoplastic resin skin material 3, the edge portion 4c inserted into the groove portion 5 is hidden and hard to be seen, so that the appearance can be improved and the edge portion 4c can be improved.
There is an advantage that separation from c can be prevented. Groove 5
May be formed by attaching a thermoplastic resin skin material 3 along a groove of the same shape provided on the surface 2a of the in-mold foam molded body 2.

As described above, since the composite molded article 1 includes the in-mold foam molded article 2, the thermoplastic resin skin material 3, and at least one kind of skin material 4, it is lightweight and easy to manufacture. There is an advantage that cost can be reduced.

Next, a method of manufacturing the composite molded body 1 configured as described above will be described. As shown in FIGS. 2 to 5, the manufacturing method according to this embodiment includes, for example, the middle mold 6 of the female mold A among the female mold (metal mold) A and the male mold (metal mold) B constituting the molding die C. After the thermoplastic resin skin material 3 is placed in the mold and the mold is clamped, foam molding is performed in the molding die 7 so that the formed in-mold foam molded body 2 and the thermoplastic resin skin material 3 are fused and integrated. Before the thermoplastic resin skin material 3 is arranged, the skin material 4 is previously arranged on the middle mold 6, and the thermoplastic resin skin material 3 and the skin material 4 are simultaneously or before foam molding. Are fused and integrated.

The molding die C is composed of, for example, a female die (die) A and a male die (die) B which can be closed and opened in the horizontal direction. The female mold A has a middle mold 6 having a concave cross section, for example, and the male mold B has a middle mold 8 having a convex cross section, for example. The cross-sectional shapes of the middle dies 6 and 8 are not particularly limited, and can be appropriately changed according to the shape of the composite molded body 1 to be manufactured. The design surfaces 6a and 8a of the middle sized molds 6 and 8 may be provided with design pattern irregularities such as leather grain as necessary. The molding die C may also be capable of clamping and opening the mold not only in the horizontal direction but also in the vertical direction.

In order to manufacture the composite molded body 1, first, as shown in FIGS.
The skin material 4 is placed on the surface.

Here, the mold chamber A1 is provided in the female mold A.
The steam chamber A2 and the drain valve A3 are connected to the mold chamber A1. Mold chamber A
A cooling water valve A4 is connected to a cooling pipe 9 disposed in the cooling pipe 1 so that cooling water can be jetted from a nozzle (not shown) provided at a predetermined position of the cooling pipe 9. A plurality of air holes 10 are formed in one of the middle dies 6, and these air holes 10 are connected to pressure reducing valves (not shown) by individual pipes.

A mold chamber B1 is also provided in the male mold B, and a steam valve B2, a drain valve B3, and a pressure reducing valve B5 are connected to the mold chamber B1. A cooling water valve B4 is connected to the cooling pipe 9 provided in the mold chamber B1, so that cooling water can be jetted from a nozzle (not shown) provided at a predetermined position of the cooling pipe 9. The male mold B is provided with a feeder 12 for filling the inside of the mold 7 with the foam beads 11. A plurality of steam holes 13 communicating with the mold chamber B1 are formed in the other middle mold 8 attached to the male mold B.

In order to arrange the skin material 4 on one of the middle dies 6,
By opening the pressure reducing valve and taking in air from the vent hole 10,
What is necessary is just to make the skin material 4 adhere to the design surface 6a. At this time, in order to insert the edge 4c of the skin material 4 into the above-described groove 5, the projection 14 is provided on the design surface 6a of one of the middle dies 6 so as to surround a predetermined range or the like. The edge 4 of the skin material 4
c may be arranged near the tip of the projection 14. In addition, the projecting portion 14 is configured such that the middle mold 6 itself has an inverted V-shaped
It may be provided by bending or casting into a character shape or the like. When only a part of the edge 4c of the skin material 4 is to be inserted into the groove 5, the protrusion 14 may be provided only in the corresponding portion.

Next, as shown in FIGS. 3 and 4, the thermoplastic resin skin material 3 is disposed on one middle mold 6. On this occasion,
In the protrusions 14, the surface 3 of the thermoplastic resin skin material 3
a groove 5 is formed in the groove 4, and the edge 4 of the skin material 4 is formed in the groove 5.
c is inserted.

In this case, it is possible to use the thermoplastic resin skin material 3 which has been molded by another mold or the like in advance so as to conform to the design surface 6a of the middle mold 6 by vacuum molding or the like. Therefore, it is desirable to perform thermoforming such as vacuum forming in the middle mold 6. In addition, as the thermoforming, in addition to the vacuum forming, for example, air pressure forming, vacuum / pressure forming, or the like may be adopted.

In order to perform thermoforming with the middle mold 6, the thermoplastic resin skin material 3 is brought into contact with the middle mold 6 in a state where it has been heated and softened in advance, and then the pressure reducing valve is opened to take in air from the ventilation hole 10. The thermoplastic resin skin material 3 may be brought into close contact with the design surface 6a of the middle die 6. In this case, it is desirable to preheat the design surface 6a to a predetermined temperature in order to reduce the temperature drop of the thermoplastic resin skin material 3 in a softened state and perform thermoforming efficiently, but this preheating is performed by a steam valve. A2 may be opened and steam may be supplied into the mold chamber A1.

When the skin material 4 is made of a thermoplastic resin, the skin material 4 may be arranged by thermoforming in the same manner as described above. Further, the skin material 4 is made of a thermoplastic resin having the same composition as or close to that of the thermoplastic resin skin material 3, or has a heat-sealing ability to both the skin material 4 and the thermoplastic resin skin material 3. Even if a hot melt adhesive or a thermoplastic resin sheet is previously applied or laminated on any one of them, heat fusion with the skin material 4 is started from the time when the thermoplastic resin skin material 3 is arranged. Good.

After arranging the thermoplastic resin skin material 3, as shown in FIG. 4, the foamed beads 11 are filled from the feeder 12 into the molding die 7 by clamping. At this time, 7
In order to make it easy for the air to escape, the mold may be clamped in a state where the gap is slightly opened (cracking state).

Next, as shown in FIG. 5, the steam valve B2 connected to the mold chamber B1 of the male mold B is opened to open the steam S
Is supplied from the steam hole 13 of the other middle mold 8 to the inside of the molding die 7,
The expanded beads 11 are heated and expanded. In addition, at the time of this heating and foaming, in order to prevent the occurrence of defective fusion, if necessary, pre-heating with steam S at a temperature lower than the temperature at which they are fused together, or steaming for maintaining the state for a predetermined time, Further, after the steaming, the pressure reducing valve B5 may be opened, and the drain may be removed in advance by evacuation of the inside of the mold 7 through the steam hole 13. Further, the skin material 4 and the thermoplastic resin skin material 3 may start to be thermally fused at the time of the heating and foaming described above.

Thereafter, if necessary, the mold is cooled, the mold is opened, and the mold is removed, so that the in-mold foam molded article 2 formed by in-mold foaming of the foam beads 11 and the surface 2 of the in-mold foam molded article 2 are formed.
A composite molded body 1a having ears 3c, which is composed of a thermoplastic resin skin material 3 fused and integrated to a and a skin material 4 fused and integrated to the surface 3a of the thermoplastic resin skin material 3, can get. Next, if the ear 3c is cut off as needed,
The composite molded body 1 shown in FIG. 1 can be obtained.

According to such a manufacturing method, since the composite molded body 1 can be easily manufactured by simultaneous integral molding, there is an advantage that the cost can be reduced.

As shown in FIG. 6, the composite molded body 21 according to the second embodiment is different from the first embodiment in that the surface material 3a of the thermoplastic resin skin material 3 in which the grooves 5 are not formed is formed on the surface 3a.
Is affixed. In order to manufacture such a composite molded body 21, as shown in FIG. 7, a middle mold 26 or the like which does not have the above-described protrusion 14 may be used.

The skin material 4 can be simply adhered to the surface of the thermoplastic resin skin material 3 in such a manner as to be lifted from the surface 3a by the thickness thereof. It is desirable to manufacture in the same manner as in the embodiment. In this case, as shown in FIG. 6, the skin material 4 is embedded in the surface 3a of the thermoplastic resin skin material 3, and the skin material 4 is flush with the surface 3a of the thermoplastic resin skin material 3. There is an advantage that the appearance is good.

As shown in FIG. 8, a composite molded body 31 according to the third embodiment is obtained by laminating a backing material 32 on the back surface 4b of the skin material 4 in the second embodiment. In order to manufacture such a composite molded body 31, as shown in FIG.
As in the second embodiment, a middle mold 26 having no protrusions 14 is used, and a backing material 32 is formed on the back surface 4b.
It is sufficient to arrange the skin material 4 on which the surface material 4 is laminated so that the skin material 4 and the backing material 32 are provided by using the middle mold 6 provided with the protrusions 14 as in the first embodiment. Edge portions 4c and 32c may be inserted into the groove portions 5 described above.

As described above, by laminating the backing material 32 on the back surface 4b of the skin material 4, there is an advantage that a different feeling can be imparted to the skin material 4. When the backing material 32 is a crosslinked foam, there is an advantage that the feel is good and the durability is excellent. When the backing material 32 is made of a thermoplastic resin, there is an advantage that the backing material 32 can be directly heat-sealed to the thermoplastic resin skin material 3. Also in this case, as shown in FIG. 8, the skin material 4 and the backing material 32 are embedded in the surface 3 a of the thermoplastic resin skin material 3, and the skin material 4 becomes the surface of the thermoplastic resin skin material 3. It is desirable to be flush with 3a.

When the backing material 32 is made of an olefin resin, it is easy to recycle the backing material 32. In this case, the in-mold foam molded article 2, the thermoplastic resin skin material 3, and the skin It is desirable that the material 4 is also made of an olefin-based resin and is so-called all olefin.

The use of the composite molded articles 1, 21 and 31 of the first to third embodiments is not particularly limited.
Although it can be used as various members depending on the purpose and the like, when it is used as an interior material of an automobile, a ship, a train, or an aircraft, there is an advantage that a lightweight and low-cost automobile can be provided.

[0051]

As described above, according to the first aspect of the present invention, since the in-mold foam molded article, the thermoplastic resin skin material and at least one type of skin material are provided, the weight is reduced, and
The manufacturing is simple and the cost can be reduced.

According to the second and third aspects of the present invention, the in-mold foam molded article and the thermoplastic resin skin material or the thermoplastic resin skin material and the skin material are fused and integrated, so that they can be simultaneously integrated. It can be easily manufactured by molding, and the cost can be reduced.

According to the fourth aspect of the present invention, since the surface properties of the skin material are different from the surface properties of the thermoplastic resin skin material, the skin material portion can be visually distinguished from the thermoplastic resin skin material portion, so that the decoration can be achieved. Sex can be easily imparted.

According to the fifth aspect of the present invention, since the material of the skin material is different from the material of the thermoplastic resin skin material, the surface properties thereof can be easily changed.

According to the invention of claim 6, the skin material is a woven fabric,
Since it is a knitted fabric or a nonwoven fabric, decorativeness can be more effectively imparted.

According to the seventh and thirteenth aspects,
Since the skin material or the backing material is made of a thermoplastic resin, it can be thermally fused directly to the thermoplastic resin skin material.

According to the eighth aspect of the present invention, the in-mold foam molded product, the thermoplastic resin skin material, and the skin material are made of an olefin-based resin and are so-called all olefins, so that recycling is easy.

According to the ninth aspect of the present invention, since at least one of the thermoplastic resin skin material and the skin material is surface-treated, light resistance, scratch resistance, and the like can be improved.

According to the tenth aspect of the present invention, since at least a part of the edge of the skin material is inserted into the groove, the edge inserted into the groove is hidden and is not easily viewed. Therefore, the appearance can be improved and peeling from the edge can be prevented.

According to the eleventh aspect of the present invention, since the backing material is laminated on the back surface of the skin material, a different feeling can be imparted to the skin material.

According to the twelfth aspect of the present invention, since the backing material is a crosslinked foam, the feel is good and the durability is excellent.

According to the fourteenth aspect, since the backing material is made of an olefin resin, the backing material can be easily recycled.

According to the fifteenth aspect, since the olefin resin is a polypropylene resin, the durability and the like are good.

According to the sixteenth aspect of the present invention, since it is an interior material of an automobile, a ship, a train, or an aircraft, a lightweight and low-cost automobile can be provided.

According to the seventeenth aspect of the invention, the composite molded body can be easily manufactured by simultaneous integral molding, so that the cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a schematic sectional view of a composite molded body according to a first embodiment.

FIG. 2 is a schematic cross-sectional view showing a state in which a skin material is arranged on one middle mold.

FIG. 3 is a schematic cross-sectional view showing how a thermoplastic resin skin material is arranged after the skin material is arranged.

FIG. 4 is a schematic cross-sectional view showing a state in which foam beads are filled in a molding die.

FIG. 5 is a schematic sectional view showing a state of foam molding.

FIG. 6 is a schematic sectional view of a composite molded body according to a second embodiment.

FIG. 7 is a schematic cross-sectional view showing a state in which a thermoplastic resin skin material is arranged after the skin material is arranged.

FIG. 8 is a schematic sectional view of a composite molded body according to a third embodiment.

FIG. 9 is a schematic cross-sectional view showing a state in which a skin material in which a backing material is laminated on a back surface is arranged, and then a thermoplastic resin skin material is arranged.

[Explanation of symbols]

 1,21,31 Composite molded body 2 In-mold foam molded body 2a Surface 3 Thermoplastic resin skin material 3a Surface 4 Skin material 4b Back surface 4c Edge 5 Groove C Mold D A Female mold (Mold) B Male mold (Mold) 7) Inside the mold 11 Foam beads 32 Backing material 32c Edge

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification code FI Theme coat ゛ (Reference) B29L 31:30 B29C 67/22 F term (Reference) 4F100 AK01B AK01C AK01D AK03A AK03B AK03C AK03D AK07D AK12A AS00C AS00D BA03 BA04 BA07 BA10A BA10C BA10D DB02 DG12C DG13C DG15C DJ01A DJ01D DJ05A EC03 EJ022 EJ05D EJ052 GB31 GB33 JB12D JB16B JB16C JB16D JK14 JL09 JL16 JN30 4F212 AA03 AA13 U02 A08 AD05 AD03 AD08 AD05 AD08 UN10 UP01 UP07

Claims (17)

[Claims] 1. An in-mold foam molded article, a thermoplastic resin skin material attached to a surface of the in-mold foam molded article, and at least one kind of skin material attached to a surface of the thermoplastic resin skin material. A composite molded article comprising: 2. The composite molded article according to claim 1, wherein the in-mold foam molded article and the thermoplastic resin skin material are fused and integrated. 3. The composite molded article according to claim 1, wherein said thermoplastic resin skin material and said skin material are fused and integrated. 4. The composite molded article according to claim 1, wherein a surface property of the skin material is different from a surface property of the thermoplastic resin skin material. 5. The composite molded article according to claim 1, wherein a material of the skin material is different from a material of the thermoplastic resin skin material. 6. The composite molded article according to claim 1, wherein the skin material is a woven fabric, a knitted fabric, or a nonwoven fabric. 7. The composite molded article according to claim 1, wherein said skin material is made of a thermoplastic resin. 8. The composite molded article according to claim 7, wherein the in-mold foam molded article, the thermoplastic resin skin material, and the skin material are made of an olefin resin. 9. The surface treatment of at least one of the thermoplastic resin skin material and the skin material.
The composite molded article according to any one of the above. 10. The composite molded article according to claim 1, wherein at least a part of an edge portion of said skin material is inserted into a groove formed on a surface of said thermoplastic resin skin material. 11. The composite molded article according to claim 1, wherein a backing material is laminated on a back surface of the skin material. 12. The composite molded article according to claim 11, wherein said backing material is a crosslinked foam. 13. The composite molded article according to claim 11, wherein the backing material is made of a thermoplastic resin. 14. The composite molded article according to claim 13, wherein said backing material is made of an olefin resin. 15. The composite molded article according to claim 8, wherein the olefin resin is a polypropylene resin. 16. The composite molded article according to claim 1, which is an interior material of an automobile, a ship, a train, or an aircraft. 17. A mold formed by arranging a thermoplastic resin skin material on one of two molds constituting a molding die, clamping the mold, and then performing foam molding in the molding die. A method of manufacturing a composite molded body by fusing and integrating an inner foam molded body and the thermoplastic resin skin material, wherein at least one type of the one mold is provided before the thermoplastic resin skin material is arranged. A method for producing a composite molded body, comprising: arranging a skin material in advance and fusing and integrating the thermoplastic resin skin material and the skin material simultaneously with or before the foam molding.