JPH052941U - Resin molded product - Google Patents

Abstract

(57) [Summary] [Purpose] The first skin material and the second skin material are partially adhered to each other, rather than adhered to each other, to reliably eliminate the adhesion failure due to the entrainment of air at the time of adhesion and to give a soft feeling. In addition, peeling of the second skin material due to the difference in thermal expansion is surely prevented, and further, the demolding property of the first skin material is improved and its damage is prevented. [Structure] A large number of substantially parallel protrusions 13 and 1 in a predetermined area
The first slush-molded first skin material 11 on which 3, ... Is formed is provided on the surface of the resin-made trim main body 1 having rigidity. The second skin material 33 is bonded to each ridge 13 of the first skin material 11.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to improvement of resin molded products used in automobiles, electric appliances, etc., and particularly to measures for adhesion and measures for releasing the skin material when partially different skin materials are provided.

[0002]

[Prior Art]

 BACKGROUND ART Conventionally, for example, a door trim as an interior material of a vehicle such as an automobile has a surface of a trim body as a rigid base material covered with a skin material. Then, by partially providing another skin material (second skin material) different in color and material from the above skin material in a predetermined region of the trim main body provided with this skin material (first skin material), A door trim designed to improve its design is known (see Japanese Utility Model Laid-Open No. 1-87941).

[0003]

[Problems to be solved by the device]

 However, in the above conventional resin molded products such as door trims, generally, the adhesive is applied to the first skin material, and the second skin material is adhered to the entire surface by pressing or the like. It was easy to be caught, and there was a risk that this air-wrapped portion would become a non-bonded portion, resulting in poor adhesion.

Further, since the first and second skin materials are entirely adhered to the base material having rigidity, it is impossible to give a rugged and hard feeling and a soft feeling to the appearance. ..

Further, when the materials of the first skin material and the second skin material are different, there is a problem that the second skin material is peeled off due to a difference in thermal expansion between the two after the bonding.

By the way, when the first skin material is slush-molded (see Japanese Patent Laid-Open No. 63-3912), the first skin material is thin and easily damaged at the time of demolding. Since it is significantly impaired, it is desired to improve the demolding property.

The present invention has been made in view of the above points, and an object thereof is to change the shape of the second skin material adhering region of the first skin material formed by slush molding to obtain the above-mentioned first skin material. The first skin material and the second skin material are partially adhered to each other instead of being entirely adhered to surely eliminate the adhesion failure due to the entrainment of air at the time of adhesion, and give a soft feeling, and the second skin material due to the difference in thermal expansion. Is to prevent the peeling of the first skin material, and to improve the demoldability of the first skin material to prevent its damage.

[0008]

[Means for Solving the Problems]

 In order to achieve the above object, the solution means of the present invention is to provide a slush-molded first skin material, in which a large number of substantially parallel ridges are formed in a predetermined area, on a surface of a resin base material having rigidity. Set up. Further, the second skin material is adhered to each ridge of the first skin material.

[0009]

[Action]

 With the above structure, in the present invention, the second skin material is provided with a plurality of substantially parallel ridge portions of the slush-molded first skin material provided on the surface of the rigid base material. Since it is bonded to the part, the air that is caught during bonding escapes from the continuous space between adjacent ridges to the outside, and adhesion defects due to the entrainment of air are reliably eliminated.

Further, the first skin material and the second skin material are in partial contact with each other only by the respective rib portions, and the portion located between the adjacent rib portions of the second skin material is Depending on the space, it becomes free and gives a soft feeling.

Further, a difference in thermal expansion between the first skin material and the second skin material when they are different from each other is absorbed by the non-adhesive portion between the adjacent ridges, and the second skin material Peeling is surely prevented.

In addition, since the ridges are arranged substantially parallel to each other in one direction on the first skin material, when the slush mold is released from the first skin material, the ridges are peeled off along the longitudinal direction of the ridges. If so, the peeling resistance will be small, and the demolding property will be improved to prevent damage to the first skin material.

[0013]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings.

1 to 3 show an automobile door trim as a resin molded product according to an embodiment of the present invention. Reference numeral 1 denotes a trim body as a base material having rigidity, and the trim body 1 is constituted by, for example, embedding a glass fiber mat 5 in a hard polyurethane foam 3.

A first skin material 11 formed by a slush molding method is integrally joined to the surface of the trim body 1, and a large number of areas are provided in a predetermined region (upper half portion) on the surface of the first skin material 11. Substantially parallel ridges 13, 13, ... Are formed.

As an example of slush molding of the first skin material 11, as shown in FIG. 4, first, in the storage box 17 of the powder slush molding apparatus 15, for example, polyvinyl chloride having a particle diameter of 150 μm is used. A powder resin molding raw material A'is housed. Next, the opening portion of the accommodation box 17 is covered with a slush molding die 21 via the packing 19, and a plurality of bases (2 in FIG. 4 are disposed on the outer periphery of the accommodation box 17 supported by the frame members 23, 23). Clamping operation of the clamping devices 25, 25, ... (Only the base is shown) clamps the outer periphery of the slush molding die 21 at a plurality of points, so that the powder resin molding raw material A ′ is transferred from the storage box 17 to the outside. Try not to come out. After that, the storage box 17 is rotated 360 ° in the vertical direction by a rotating device (not shown), and during this time, the powder resin molding raw material A ′ in the storage box 17 is heated to, for example, 200 ° C. (On the lower surface of FIG. 4) to be adhered and melted and then cooled, and a large number of substantially parallel protrusions 13, 13, ... Are formed by the recessed protrusions 27, 27 ,. The first skin material 11 is obtained. Then, as shown in FIG. 5, the first skin material 11 is peeled from the slush mold 21. The procedure for joining the first skin material 11 to the surface of the trim body 1 is to set the first skin material 11 together with the glass fiber mat 5 in a cavity of a molding die (not shown), and to form a rigid polyurethane foam molding raw material in the cavity. Is injected and the foam is cured by the mold temperature.

Further, on the surface of the first skin material 11, a second skin material 33 in which a backing material 31 is lined on a cloth 29 is adhered to each of the ridges 13, and the adjacent ridges are adjacent to each other. A continuous space 35 is formed between 13 and 13.

As described above, in this embodiment, since the second skin material 33 is bonded to the large number of substantially parallel ridges 13, 13, ... Of the first skin material 11, the air caught during the bonding It is possible to reliably eliminate the adhesion failure due to the entrainment of air by letting the air from the continuous space 35 between the adjacent ridges 13 and 13 to the outside.

Further, in the above-described embodiment, the first skin material 11 and the second skin material 33 are only partially contacted with each other by the ridges 13, and the adjacent skin material of the second skin material 33 is adjacent to each other. Since the portion located between the ridges 13 and 13 is the space 35, a soft feeling can be given.

Further, in the above-described embodiment, even when the first skin material 11 and the second skin material 33 are made of different materials, the difference in thermal expansion between the first skin material 11 and the second skin material 33 is generated between the adjacent ridges 13, 13. The non-adhesive portion of the second skin material 33 can absorb the second skin material 33 and reliably prevent the second skin material 33 from peeling off.

In addition, in the above-described embodiment, since the ridges 13 are arranged on the first skin material 11 substantially parallel to each other in one direction, the length of each ridge 13 is long when the slush mold 21 is released from the mold. If it is peeled off along the direction, the peeling resistance can be reduced, the mold releasability can be improved, and damage to the first skin material 11 can be prevented.

Although the first skin material 11 has a single layer in the above embodiment, the present invention is not limited to this. For example, the first skin material 11 has a two-layer structure including a skin layer and a foam layer provided on the back surface thereof. 1 It may be used as the skin material 11, and in this case, since it has the foamed layer, a soft feeling can be further provided.

Further, in the above embodiment, the case where the resin molded product is a door trim is shown, but the invention is not limited to this, and the resin molded product may be applied to an instrument panel of an automobile, other interior materials, a resin casing of an electric product, or the like. It is applicable.

[0024]

[Effect of the device]

 As described above, according to the present invention, when the slush-molding first skin material is provided on the surface of the resin base material having rigidity, and the second skin material is provided on the surface of the first skin material, Since the second skin material is adhered to a large number of substantially parallel ridges formed in a predetermined region of the first skin material, a continuous space can be formed between the adjacent projections. Due to the presence, it is possible to surely eliminate the adhesion failure due to the entrainment of air, give a soft feeling, and surely prevent the peeling of the second skin material due to the difference in thermal expansion. Furthermore, the first skin material can be peeled off with a small peeling resistance along the longitudinal direction of each ridge portion, and the demolding property of the first skin material can be improved and its damage can be prevented.

[Brief description of drawings]

FIG. 1 is a perspective view of a vehicle door trim.

FIG. 2 is an enlarged transverse cross-sectional side view of a main part of a bonding portion between a first skin material and a second skin material.

FIG. 3 is a front view of a door trim.

FIG. 4 is a vertical sectional view of a slush molding device.

FIG. 5 is a vertical cross-sectional view showing a process of peeling the first skin material from the slush mold.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Trim main body (base material) 11 ... 1st skin material 13 ... Ridge part 33 ... 2nd skin material

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display area // B29C 41/18

Claims (1)

[Claims for utility model registration] 1. A slush molding in which a resin base material having rigidity and a large number of substantially parallel ridges formed in a predetermined region on the surface of the base material are formed. A first skin material and a second skin material adhered to each ridge of the first skin material.