JP3535234B2 - Decorative resin products - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a decorative resin product used as an interior material for various vehicles and constructions including automobiles.

[0002]

2. Description of the Related Art Conventionally, as a resin interior material, a base sheet is flocked by an electrostatic method or a spray method, or as a surface sheet as disclosed in, for example, JP-A-4-293854. It is known that more than one kind of synthetic resin colored chips are mixed to reveal a grain pattern.

[0003]

In any of these, the texture can be increased and the decorative effect can be enhanced as compared with the case where the sheet surface is printed, but in the case of the former flocking, the short flocked by friction or the like is used. On the contrary, if the fiber pile falls off, it will look bad.

In the latter case, two or more kinds of colored synthetic resin chips having a predetermined particle size are mixed with a thermoplastic resin compounding raw material for obtaining a transparent sheet, and this is calendered or extruded to form a surface sheet. It is molded and laminated on the colored intermediate sheet and the backing substrate of the lowermost layer in this order, but the synthetic resin chips are mixed to form a grain pattern. You can't get the texture.

Further, if the surface sheet is thin, mixed synthetic resin chips project on the surface to form irregularities, which deteriorates the feel and appearance.

[0006] Therefore, the present invention provides a resin product which can obtain a soft cloth-like texture and further enhance the decorative effect.

[0007]

In the claim 1 SUMMARY OF THE INVENTION, resin powder, a stabilizer, a plasticizer, a thermoplastic blend material consisting of coloring agents, etc., in advance pellets by kneading a short fiber piles colored Jo using extruded resin raw material, by forming <br/> form into a sheet by extrusion molding or the like by heating and melting the resin material, pale colored transparent or semi-transparent synthetic resin substrate In addition, short fiber piles made of synthetic resin that are colored darker than the base material are mixed in the same fiber direction.

In the second aspect of the present invention, the surface of the base material in which the short fiber pile is mixed is provided with an uneven pattern.

According to the third aspect, the short fiber pile mixed in the base material has a length of 0.5 to 10 mm and a thickness of 1 mm.
It is set to ~ 30 denier.

[0010]

According to a fourth aspect of the present invention, the amount of the short fiber pile mixed in the base material is 1 to the synthetic resin material of the base material.
It is set to 20% by weight.

[0012]

According to the present invention, since the base material is lightly colored, the background color of the member arranged on the back surface of the base material is not visible, and the short fiber pile mixed in the base material is a base material. Since the short fiber pile is colored more deeply than the material, it appears as if the short fiber pile floats up more clearly than in the base material, and a soft cloth-like texture with a depth can be revealed.

According to the second aspect of the present invention, the irregular reflection pattern is obtained on the surface of the base material, and the short fiber pile inside the base material is slightly refracted to give a deeper soft feeling.

According to the third aspect, since the length and the thickness of the short fiber pile are set to the optimum values obtained on a trial basis, a delicate and soft texture can be exhibited.

[0015]

According to the fourth aspect , since the mixing amount of the short fiber pile is set to the optimum value obtained on a trial basis, the moldability and workability of the resin product can be improved.

[0017]

Embodiments of the present invention will now be described in detail with reference to the drawings.

In FIG. 1 and FIG. 2, reference numeral 1 is a base material made of a transparent or semitransparent synthetic resin colored in an appropriate light color, and this base material 1 is colored in an appropriate color darker than the base material 1. A short fiber pile 2 made of synthetic resin is mixed.

For molding the substrate 1 in which the short fiber pile 2 is mixed, any known molding method such as extrusion molding method, injection molding method, blow molding method or calender molding method may be adopted. it can.

FIG. 3 shows, as an example, a case where the base material 1 is molded by an extrusion molding method. The hopper 5 of the extrusion molding machine 3 is supplied with the resin raw material P which is obtained by mixing the transparent or semitransparent thermoplastic resin compounding raw material with the above-mentioned short fiber pile 2 and pelletizing it.

This resin raw material P is a hydraulic motor (not shown).
It is sent to the front inside the cylinder 7 with the rotation of the screw 6 rotated by and is heated and melted by the heat transfer from the cylinder 7 heated by the heater 8 and the shear heat due to the rotation of the screw 6.

Due to the heating and melting of the resin raw material P, the short fiber pile 2 in the melted resin has the direction of the fibers gradually flowing due to the flow resistance as the molten resin flows forward in the cylinder 7. As the fibers are aligned in the same direction, the fiber orientation becomes uniform.

Then, the molten resin is continuously extruded in a sheet form from the die 4 to obtain the base material 1 in which the short fiber piles 2 are mixed with the fibers oriented in one direction in the extruding direction.

In the short fiber pile 2, the resin raw material P is heated and melted in this way, and the fibers are oriented in the flow direction of the molten resin by being fed in one direction under the required pressure. Therefore, it is possible to obtain the base material 1 in which the short fiber piles 2 are mixed evenly in the fiber direction not only by the extrusion molding method but also by another molding method described above.

On the lightly colored transparent or semitransparent base material 1 as described above, the short fiber pile 2 colored deeper than the base material 1 is formed.
However, by mixing and arranging the fiber orientations in one direction, the short fiber pile 2 is lifted and exposed, and the fiber orientations are aligned and a delicate pattern is obtained. The texture of cloth is obtained.

The pelletized resin raw material P is a thermoplastic resin blending raw material composed of a resin powder such as PP powder or PVC powder, a stabilizer, a plasticizer, and a coloring agent, and a colored short fiber pile 2 in a Banbury mixer or the like. Mixing and kneading in, and extruding this (Banbar mixer and extruder are not shown)
It is obtained by extrusion molding into a pellet form.

Even if the short fiber pile 2 having the same or similar color as the base material 1 is used, since the base material 1 is lightly colored, the color of the short fiber pile 2 is clearly embossed and a cloth-like texture is obtained. However, if a plurality of types of short fiber piles 2 colored in other colors are mixed, the fiber color is emphasized and a sensible texture can be obtained.

The short fiber pile 2 mixed in the base material 1 preferably has a length of 0.5 to 10 mm and a thickness of 1 to 30 denier.

This is because when the length and the thickness of the short fiber pile 2 are smaller than the above range, the pattern becomes fine and the texture of the cloth becomes thin, and when it is larger than the above range. Since it was tentatively proved that the texture of the fabric was weakened in this case due to the loss of delicacy, it was set as the most suitable range for producing the texture of the fabric.

Further, the mixing amount of the short fiber pile 2 is set to 1 to 20% by weight with respect to the synthetic resin material of the base material 1.

As a result of repeated tests on the mixed amount of the short fiber pile 2, if the mixed amount is smaller than the above range, the short fiber pile 2 becomes sparse in the base material 1 and the texture of the fiber-like cloth is obtained. In addition, when the content is less than the above range, the plasticity of the base material 1 is impaired and the moldability of the base material 1 is impaired, and the elongation is lost and the secondary workability is impaired. It is set as an appropriate range.

Even if the short fiber pile 2 is linear, as described above, the direction of the fibers is along the flow direction of the molten resin during the molding process of the base material 1, and the directionality becomes uniform in the base material 1. the delicacy is Desa courted.

The short fiber pile 2 may have a circular cross section or a polygonal cross section such as a triangular cross section.

Short fiber pile 2 thus formed
The encased base material 1 is provided as it is on the surface of the vehicle body panel 10 as an interior material of an automobile. In this case, since the base material 1 is light colored transparent or translucent as described above, the vehicle body panel 10 is The background color of No. 1 does not show through, and the coloring of the short fiber pile 2 clearly stands out in the coloring of the substrate 1, and the texture of the cloth appears and the decorativeness can be remarkably improved.

The base material 1 may be directly arranged on the surface of the vehicle body panel 10 as described above, or may be laminated with a resin-made backing base material 11 as shown in FIG. is there.

FIG. 5 shows a third embodiment of the present invention.
In this embodiment, the surface of the base material 1 is provided with the uneven pattern 1a.

By providing the surface of the base material 1 with the uneven pattern 1a in this way, a diffuse reflection effect is obtained by the uneven pattern 1a, and the short fiber pile 2 inside the base material 1 is slightly refracted and appears. A deeper soft feeling can be obtained and the texture of delicate cloth can be increased.

In this embodiment, a laminated body of the base material 1 and the backing base material 11 is shown, and the surface of the base material 1 has an uneven pattern 1a.
The laminated body provided with can be easily obtained by, for example, the method shown in FIG.

A substrate 1 containing a roll of short fiber pile 2 and a backing substrate 1 also wound in a roll.
1 is fed to a laminator 12 composed of a heater 13 and a heating drum 14 and heated to, for example, about 160 ° C. to heat-bond the base material 1 and the backing base material to be laminated.

Immediately after this heat fusion step, the surface of the substrate 1 is squeezed by the squeezing roll 15 and the pressure-bonding roll 16 to form the uneven surface 1a (see FIG. 5), and the squeezing roll 15 and the pressure-applying roll 17 are used. The laminate is continuously wound by winding on the winder 18.

[0041]

As described above, according to the present invention, the following effects can be obtained. (1) Since the base material is lightly colored, the background color of the member arranged on the back surface of the base material is not visible, and the short fiber pile mixed in the base material is colored darker than the base material. Therefore, the pile of short fibers can be seen clearly rising from the inside of the base material to reveal a soft and delicate cloth-like texture having a depth, and the decorative effect can be remarkably improved. (2) By providing an uneven pattern on the surface of the base material, since the irregular reflection effect is obtained by the uneven pattern on the surface, the short fiber pile inside the base material is slightly refracted and appears to have a deeper and softer surface. It can bring out the texture of cloth. (3) Since the length and the thickness of the short fiber pile are set to 0.5 to 10 mm and the thickness to 1 to 30 denier as the optimum values obtained experimentally, the delicate and soft cloth texture is obtained. The texture can be revealed. (4) Mixing of short fiber pile into the synthetic resin material of the base material
Set the amount to 1 to 20% by weight of the optimum value obtained experimentally
Therefore, it is possible to improve moldability and processability.
it can.

[Brief description of drawings]

FIG. 1 is a schematic plan view of a first embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG.

FIG. 3 is a schematic sectional view showing an example of an apparatus for molding the resin product of the embodiment shown in FIGS. 1 and 2.

FIG. 4 is a schematic sectional view showing a second embodiment of the present invention.

FIG. 5 is a schematic sectional view showing a third embodiment of the present invention.

6 is a schematic cross-sectional view showing an example of an apparatus for molding the resin product of the embodiment shown in FIG.

[Explanation of symbols]

1 base material 2 Short fiber pile

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Nobuaki Kondo No. 2 Takara-cho, Kanagawa-ku, Yokohama, Kanagawa Nissan Motor Co., Ltd. (72) Norio Kazama No. 2 Takara-cho, Kanagawa-ku, Yokohama, Nissan Nissan Motor Co., Ltd. (56) References JP-A-6-146176 (JP, A) JP-A-2-68373 (JP, A) JP-A-50-56449 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) B29D 31/00 C08L 101/00 B32B 5/16 D06N 7/04 B29C 39/02 D06P 5/00

Claims (4)

(57) [Claims] 1. Resin powder, stabilizer, plasticizer, colorant, etc.
A thermoplastic resin compounding raw material consisting of and a colored short fiber pile are kneaded and extruded into pellets in advance, and the resin raw material is melted by heating to form a sheet by extrusion molding or the like. According to the above, a decorative resin characterized in that a light-colored transparent or translucent synthetic resin base material is mixed with synthetic resin short-fiber piles colored deeper than the base material in the same fiber orientation. Product. 2. The decorative resin product according to claim 1, wherein the surface of the base material is provided with an uneven pattern. 3. The short fiber pile has a length of 0.5 to 10
The resin product for decoration according to any one of claims 1 and 2, wherein mm and thickness are set to 1 to 30 denier. 4. The decorative resin product according to any one of claims 1 to 3 , wherein the short fiber pile is mixed in an amount of 1 to 20% by weight with respect to the synthetic resin material of the base material.