Interior material having composite layer structure capable of light emission through various logo patterns and method of manufacturing the same

Abstract

Disclosed herein is a method of manufacturing an interior material, which can implement various and distinct light emission effects by disposing a light-blocking layer configured to block light emitted from a light source on a wood layer or transparent film and then allowing the component of the transparent film to fill lighting grooves formed by laser-etching. Since a tape configured to support an island is employed, stable manufacturing is possible throughout an overall process.

Claims

1. A method of manufacturing an interior material, comprising the steps of: (1-1) bonding a blocking layer for blocking transmission of light below a material layer with a hot-melt layer interposed therebetween; (1-2) attaching a support tape for supporting an island to the upper surface of the material layer; (1-3) forming lighting grooves, through which light passes, by laser-etching a predetermined portion from the blocking layer to the material layer; (2-1) attaching a binder to a transparent film; (3-1) combining a module resulting from step (1-3) with a module resulting from step (2-1); (3-2) replacing the support tape on the material layer with a fresh support tape to form a product; and (3-3) obtaining an interior material by bonding the product from step (3-2) to a base material or an article to be processed, which has a base layer, to obtain a molding material, and then subjecting the molding material to an injection molding process, wherein the injection molding process is performed at a predetermined temperature such that the transparent film is melted and stretched to fill the lighting grooves.

2. The method of claim 1, wherein the transparent film is made of a thermoplastic polymer selected from the group consisting of polycarbonate (PC), polyimide (PI), polyethersulfone (PES), polyarylate (PAR), poly(ethylene naphthalate) (PEN), polyethylene terephthalate (PET), a cycloolefin copolymer, and a mixture of two or more thereof.

3. The method of claim 1, wherein the material layer is made of one of wood, fabric, stone, artificial leather, carbon fiber reinforced plastic (CFRP), and glass fiber reinforced plastic (GFRP).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The above and other objects, features and advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:

(2) FIG. 1 is a view showing a molded article including a real wood material;

(3) FIGS. 2a to 2c are flowcharts showing a method of manufacturing an interior material including a logo lighting portion according to a first embodiment of the present invention; and

(4) FIGS. 3a to 3g are sectional views of members manufactured by the steps shown in FIG. 2.

DETAILED DESCRIPTION

(5) Some embodiments of the present invention will be described in detail below with reference to the exemplary drawings.

(6) It should be noted that the same reference symbols are assigned to the same components as much as possible even when they are illustrated in different drawings. In the following description of the embodiments, when it is determined that a detailed description of a related well-known function or configuration may make the gist of the present invention obscure, it will be omitted.

(7) The following embodiments of the present invention are partially characterized by specifying a particular material for filling lighting grooves, i.e., guides through which light emitted from a light source passes.

(8) FIGS. 2a to 2c are flowcharts showing a method of manufacturing an interior material including a logo lighting portion according to a first embodiment of the present invention, and FIGS. 3a to 3g are sectional views of members manufactured by the respective steps shown in FIG. 2.

(9) Referring to these drawings together, first, a wood or material layer 10 is provided as a main material that forms the outer portion of the interior material. In this case, the wood is merely one example, and fabric, stone, artificial leather, carbon fiber reinforced plastic (CFRP), or glass fiber reinforced plastic (GFRP) may be used instead of the wood. A blocking layer 14 is placed below the material layer 10 with a hot-melt layer 12 interposed therebetween. The hot-melt layer 12 may include a nonwoven material, such as pulp, fiber or mesh, and a thermoplastic polymer composition having appropriate thermal reaction characteristics. Another hot-melt layer 16 is placed on the lower surface of the blocking layer 14. The blocking layer 14 is intended to block light emitted from a light source (not shown) and prevent a portion, other than logos, from being lit, and is fabricated by performing printing or painting on a transparent film. The material layer 10 and the blocking layer 14 are bonded to each other by, for example, a roll laminating process at step S10.

(10) Thereafter, a support tape 18 is attached to the other surface (i.e., the upper surface) of the material layer 10 in order to support an island at step S12. The support tape 18 functions to support and fix the island during a process of forming lighting grooves to be described below. The support tape 18 is made of, for example, a polyethylene terephthalate (PET)-based silicone material.

(11) Thereafter, lighting grooves L1 and L2 that pass through the hot-melt layer 16 and the material layer 10 are formed by laser etching at step S14. The lighting grooves L1 and L2 are shown by way of example, and may be formed in the shape of one or more lines. Via the above process, a first module 50 constituting part of the interior material of the present invention is obtained (see FIG. 3c). It will be understood by those skilled in the art that the first module 50 includes at least the material layer 10, the blocking layer 14, and the lighting grooves L1 and L2.

(12) Meanwhile, separately from the above-described process, as shown in FIG. 3d, a second module 60 is obtained by attaching a binder 22 to a transparent film 20 at step S20. The transparent film 20 may be, for example, an optical transparent film made of a thermoplastic polymer selected from the group consisting of polycarbonate (PC), polyimide (PI), polyethersulfone (PES), polyarylate (PAR), poly(ethylene naphthalate) (PEN), polyethylene terephthalate (PET), a cycloolefin copolymer, and a mixture of two or more thereof. The binder 22 is preferably a copolymer, such as acrylic resin, but may be also made of a metal or ceramic material to be bonded to a base material layer.

(13) Thereafter, the first module 50 and the second module 60 are bonded to each other by a heat pressing process with the hot-melt layer 16 interposed therebetween at step S30 (see FIG. 3e).

(14) The support tape 18 located on the material layer 10 may have small powder precipitates produced during the etching of the lighting grooves L1 and L2. To remove this precipitates, the support tape 18 is peeled off, and a fresh support tape 18A is attached at step S32. The support tape 18A functions to protect the upper surface of the material layer including an island during a molding process to be described below.

(15) Finally, the resulting material is bonded to a base material or an article to be processed, which includes a base material layer 24, and is then subjected to an injection molding process, thereby obtaining an interior material at step S34. Since a light source (not shown) is disposed under the base material layer 24, the base material layer 24 is made of a transparent or semitransparent material, such as polycarbonate (PC) or acrylonitrile butadiene styrene (ABS) resin in order to enable sufficient light transmittance. As shown in FIG. 3g, the injection molding process is performed at high temperature such that the transparent film 20 is melted and stretched to fill the lighting grooves L1 and L2.

(16) Therefore, according to the above-described embodiment of the present invention, an interior material having a composite layer can be fabricated by coupling the first module 50 and the second module 60 to each other. Clearer logo lighting can be expected due to the resin component of the transparent film filling the lighting grooves L1 and L2, and foreign materials can be prevented from entering the lighting grooves L1 and L2.

(17) As described above, according to the present invention, clearer logo lighting can be made possible via the transparent film filling the lighting grooves in the interior material having the composite layer, and foreign materials can be prevented from entering the lighting grooves, and a logo lighting portion having various patterns can be formed.

(18) The method of manufacturing the interior material according to the present invention is simple, cost-effective, and advantageous in terms of cost saving.

(19) Although the preferred embodiments of the present invention have been described for illustrative purposes, these are merely examples, and do not limit the scope of the present invention. Various modifications may be made without departing from the scope of the invention, and fall within the scope of the present invention. The scope of the present invention is defined based on the attached claims.