KR101302395B1 - Car interior article with veneer - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to automobile interior materials, such as a dashboard exterior panel, an instrument exterior panel, an audio deck exterior panel, a mission box exterior panel, a door trim exterior panel of an automobile, and the like. In the molded automotive interior material, a patterned wood layer is formed on the surface of the injection resin, and an elastic layer having a stretch ratio that can cope with the stretching or bending of the wood is provided under the patterned wood layer.

Description

Car interior material with veneer with modified elastics {CAR INTERIOR ARTICLE WITH VENEER}

TECHNICAL FIELD The present invention relates to automobile interior materials, and more particularly to a dashboard exterior panel, an instrument exterior panel, an audio deck exterior panel, a mission box exterior panel, a door trim exterior panel of an automobile. And so on.

Conventionally, automobile interior materials such as dashboard exterior panels of automobiles, instrument exterior panels, audio deck exterior panels, mission box exterior panels, door trim exterior panels, and the like are made of soft synthetic resin or synthetic resin foam ( After injection molding into foam, the surface was made by various surface treatment methods. However, in recent years, as the interior materials of automobiles are being advanced, the interior materials of the interior materials are first injection-molded, and then laminating films having colorful shapes such as wood patterns on the surface of the materials by surface thermal bonding, or laminating such films inside the injection molds. Wood grains, which are integrated into the surface of the substrate together with the molding of the substrate, are widely used. Such wood grain and its molding apparatus and method are Korean Patent Publication No. 10-337433 (Attachment and joining method of substrate and skin material for automobile interior material), Korean Utility Model Publication No. 20-299852 (Interior material for automobile door trim) Bonding device), Korean Patent No. 10-688926 (apparatus and method for manufacturing automobile interior panel, and automobile interior panel manufactured by the method), Korean Patent Publication No. 10-2010-21196 (Automobile And a method for manufacturing a built-in panel for a dragon).

However, even when printing a pattern such as a photograph of a wood pattern or the like in wood grain, the beautiful pattern, shape, texture, and feel of the pattern wood obtained from natural wood cannot be utilized.

Accordingly, attempts have been made to use real wood or thin veneer as a surface material for automobiles as a method of overcoming these disadvantages of wood grain, for example, Korean Patent No. 10-569434 (Automotive using mother-of-pearl) Method for manufacturing the interior material). Korean Patent No. 10-569434, which employs a kind of laminating method, is a step of laminating and attaching a thin aluminum sheet and a pseudo tree to trim a predetermined interior material area, and a trimmed aluminum sheet and a pseudo tree. Premolding to a predetermined interior shape, inserting the preform into a mold and then injecting the resin integrally over the back of the preform, attaching the real wood on the aluminum sheet of the injection molded article, , A process of engraving a realwood surface into a predetermined pattern, inserting a mother-of-pearl in the intaglio processing groove, coating a realwood surface including the mother-of-pearl with a coating agent, and then polishing and polishing the car Disclosed is a manufacturing method for interior materials.

The real wood or cosmetic veneer used hereafter (hereinafter, simply referred to as veneer) is a thin slice of solid wood, 0.1 mm to 0.9 mm thick using a slicer. These veneers have beautiful patterns, colors, and textures that are incomparable with wood grain films, but they are very thin and prone to damage, such as bursting or breaking. Therefore, when the veneer is attached to a curved surface, a groove, or both sides of the corner where the face meets the surface, there is a disadvantage that it is easily broken or attached after being attached. In addition, these veneers have a very high water-absorption function, and when water is absorbed, linear expansion and volume expansion are performed, and when moisture is lost, bowing and volume shrinkage are performed. In addition, veneers are much smaller than when they absorb moisture when heat is applied, but linear expansion and volume expansion are carried out. In addition, veneers are unstable and dimensional deformation due to the anisotropy of wood (the property of different properties such as shrinkage and expansion coefficient due to moisture or heat in each fiber direction, tangential direction and radial direction). There are also disadvantages that are difficult to predict. Shrinkage expansion of the veneer due to the entry of moisture and heat is not completely eliminated even when the veneer is painted.

Therefore, when laminating the veneer on the surface of the aluminum sheet as disclosed in Korean Patent No. 10-569434, peeling of the veneer on the curved surface, the groove, or both sides of the corner where the surface meets the surface after the attachment process or the attachment, Deformation or damage occurs, and even during use as a vehicle interior material, the veneer repeats linear expansion and volume expansion and bow and shaft shrinkage due to moisture or heat, there is a problem that the veneer is cracked or peeled off.

The present invention has been made to solve the problems of the above-described wood veneer surface material, the first problem to be solved by the present invention, the surface of the veneer in the curved surface, grooves, or both sides of the face and the surface after the attachment process or attachment. It is to provide an automotive interior material having a veneer layer is modified elasticity so that peeling, deformation or damage does not occur.

The second problem to be solved by the present invention is that the veneer on the surface of the resin injection molding by the moisture or heat during use as a vehicle interior material, the elasticity is modified so that the splitting or peeling, even if the linear expansion and volume expansion and bow and volume shrinkage are repeated It is to provide a vehicle interior having a layer.

In the above-described object of the present invention, in the automotive interior material molded by injection of resin, a veneer layer is formed on the surface of the injection resin, and an elastic layer having a stretch ratio that can cope with the stretching or bending of the veneer is provided below the veneer layer. This is solved.

The elastic layer may be formed by spraying or applying a material selected from polyurethane, rubber or silicone.

The lower part of the veneer layer may further include a strength reinforcement made of a nonwoven fabric, and an elastic layer may be formed under the strength reinforcement layer.

According to the present invention having the above-described configuration, the thin veneer obtained from wood is a dashboard board panel, instrument exterior panel, audio deck exterior panel, mission box exterior panel, door trim ) It is used as surface material of automobile interior materials such as exterior panel, but there is no peeling, deformation or damage of veneer on the surface of injection resin after molding or molding of interior materials. Repeated axial and volume shrinkage does not crack or peel off the veneer.

1 is a perspective view of an embodiment of a vehicle interior having a veneer layer according to the present invention.
FIG. 2 is a cross-sectional view taken along line AA ′ of FIG. 1.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the automotive interior having a modified wood veneer layer according to the present invention.

The present invention is applied to automotive interior materials that are molded by injection molding resin. Although the laminating method can be used as a method of forming the veneer layer 3 on the injection resin base material 5 surface, it is more preferable to use the insert injection method as mentioned later.

The veneer that can be used in the present invention includes natural veneer, dyed veneer dyed natural veneer, and laminated (reconstituted) veneer cut after laminating wood.

As shown in Figures 1 and 2, a feature of the present invention is that the veneer layer (to prevent the veneer from being damaged or separated from the injection resin substrate (5) during stretching or bending during the molding or molding of the interior material. 3) In the lower portion is provided with an elastic layer (7) having a stretch ratio that can cope with the stretching or bending of veneer.

The elastic layer 7 may be formed by spraying or applying polyurethane, rubber or silicon. The material and thickness of the elastic layer 7 are determined by actually measuring the kind, thickness, degree of softening, moisture expansion shrinkage, endothermic expansion shrinkage, and the like of the veneer used. At this time, the material and thickness are determined so that the elastic layer 7 exhibits a stretch ratio that accurately follows the stretch or the bending of the veneer.

The elastic layer 7 follows the pattern when the veneer expands along the shape of the mold cavity or the injection resin substrate 5 at the curved surface of the mold cavity, the groove, or both sides of the corner where the surface meets the surface during injection. It prevents the veneer from tearing or cracking by expanding, and reinforces the adhesive force with the injection resin substrate 5 to prevent the veneer from being separated from the injection resin substrate 5.

The veneer is sensitive to changes in the humidity of the outside air even when painted. That is, when there is much moisture in the outside air, it absorbs the moisture to perform linear expansion and volume expansion, and when the outside air is dried, it loses water and contracts the bow and volume contractions. When this shrinkage expansion is repeated, the veneer separates or cracks from the injection resin substrate 5, and the veneer itself is damaged. The elastic layer (7) when the interior material is completed and used in automobiles, when the veneer on the surface of the resin injection molding by the moisture or heat contracts and expands together with the linear expansion and volume expansion and bow and volume contraction, the expansion and contraction of the veneer Repeat this to prevent the veneer from cracking or peeling.

As shown in FIG. 2, the strength reinforcing material 11, such as a nonwoven fabric, may be further attached to the lower part of the veneer layer 3 by an adhesive 9 to form the strength reinforcing material 11.

The surface of the veneer layer 3 may be coated with a transparent paint.

In order to manufacture the automobile interior material 1 having the elastically modified veneer layer 3 according to the present invention, the veneer and the elastic layer or the veneer and the strength reinforcement and the elastic layer are integrated before the resin injection of the injection resin substrate 5. It can be formed into a mold, and it can be inserted into an injection mold to form a veneer surface layer simultaneously with resin injection.

In addition, in order to manufacture the automobile interior material (1) having the elastically modified veneer layer (3) according to the present invention, before bonding to the surface of the injection resin substrate (5) and the veneer and elastic layer or veneer and strength reinforcement and An elastic layer is integrally formed, and this can be adhere | attached on the surface of the base material 5 which resin-injected previously.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken in conjunction with the principles of this invention. It should be interpreted as mad.

1: automotive interior material 3: wood veneer
5: injection resin base material 7: elastic layer
9: adhesive 11: strength reinforcing material
13: joining projection

Claims (3)

In the interior material for automobiles in which the veneer layer 3 using natural veneer, dyed veneer or laminated veneer is formed on the surface of the injection resin substrate 5,
Between the veneer layer 3 and the injection resin substrate 5,
When the veneer expands along the shape of the mold cavity or the injection resin 5 on the curved surface of the mold cavity, the groove, or the edge both sides where the surface meets during injection, the veneer expands following the tearing or cracking of the veneer. Elasticity, characterized in that it comprises an elastic layer (7) having an elasticity modulus to prevent it from being prevented and to reinforce the adhesive force with the injection resin (5) to prevent the veneer from being separated from the injection resin (5). Interior materials with textured wood layers.
The method of claim 1,
The elastic layer (7) is a vehicle interior material having an elastically modified veneer layer, characterized in that formed by spraying or applying a material selected from polyurethane, rubber or silicone.
The method of claim 1,
Automobile interior material having an elastically modified veneer layer, characterized in that the strength reinforcing material 11 is further provided between the veneer layer (3) and the elastic layer (7).

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