JP2008087388A - Method of delustering resin-made part - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the time for frosting resin-made parts and frosting cost. <P>SOLUTION: The method of frosting a resin-made part has a step S1 of creating data of a combined image formed by combining embossing image data with fine embossing image data, a step S2 of patterning the combined image on a mask film with the created data of the combined image, a step S3 of applying a resist to a mold to be used in embossing, a step S4 of irradiating the resist with UV rays through the mask film having the pattern of the combined image, a step S5 of etching the surface of the mold and removing the resist to fabricate a mold having a pattern of the combined image. A resin part is embossed by using the mold made by the above method. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a matting method for resin parts such as a skin of an instrument panel for a vehicle.

In general, in order to prevent light reflected from the surface of the instrument panel skin and reflected in the front window, light is applied to the surface by forming a fine pattern and a fine geometric pattern on the surface. The matte processing which makes irregular reflection is given. Usually, this matting process forms a drawn pattern on the mold surface by etching, then forms a geometric pattern on the mold surface by another etching process, and uses this mold to draw on the skin. It is done by giving.
JP 2004-148329 A JP 2004-148330 A JP-A-8-224678 Japanese Patent Publication No. 1-26817

  As described above, the conventional matting process has a flow of forming a drawn pattern on the mold surface by etching and then forming a geometric pattern on the mold surface by another etching process. The matte processing of a standard size instrument panel requires about 6-9 days, and it takes a lot of time to complete the matte processing. Further, since the etching process is required at least twice, a large processing cost is required.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a matting method for resin parts that can reduce processing time and processing cost.

  In order to solve the above-mentioned problems, the matte method for resin parts according to the present invention is a resin-made matte surface for resin parts by forming a drawn pattern and a fine geometric pattern on the surface of the resin part. A method of matting a part, wherein a step (S1) of generating combined image data in which aperture pattern image data and geometric pattern image data are combined by image processing is combined with the generated combined image data. A step (S2) for producing a mask film on which an image is patterned, and a step (S3, S4) for patterning a composite image on the mold surface by etching the mold surface using the produced mask film. , S5), and a step of drawing and pressing the surface of the resin part using the mold on which the composite image is patterned.

  According to the matting method for resin parts according to the present invention, the drawing pattern and the geometric pattern can be patterned on the mold by one etching process, so that the time required for the matting process can be shortened. In addition, the cost required for matting can be reduced.

  Hereinafter, with reference to the drawings, a method for matting a resin part according to an embodiment of the present invention will be described.

  In the flowchart shown in FIG. 1, an operator inputs aperture pattern image data (hereinafter referred to as aperture image data) and geometric pattern image data (hereinafter referred to as micro aperture image data) to the image processing apparatus, and image processing is performed. Is started at the timing when the execution of is instructed, and the matting process proceeds to the process of step S1. The geometric pattern is preferably a plurality of circular patterns arranged in a line.

  In the process of step S1, the image processing apparatus generates composite image data obtained by combining the aperture image data and the micro aperture image data. Thereby, the process of step S1 is completed and the matte process proceeds to the process of step S2.

  In the process of step S2, the image processing apparatus patterns the composite image on the mask film using the composite image data generated by the process of step S1. Thereby, the process of step S2 is completed and the matte process proceeds to the process of step S3.

  In the process of step S3, the resist processing apparatus applies a resist to the surface of the mold used in the drawing and pressing process. Thereby, the process of step S3 is completed and the matte process proceeds to the process of step S4.

  In the process of step S4, the resist processing apparatus irradiates the resist with ultraviolet rays through the mask film on which the composite image is patterned. Thereby, the process of step S4 is completed and the matte process proceeds to the process of step S5.

  In the process of step S5, the resist processing apparatus performs an etching process on the mold surface after the process of step S4, and then removes the remaining resist to produce a mold in which the composite image is patterned. Thereby, the process of step S5 is complete | finished and a series of matting processes are complete | finished by performing a drawing process to resin parts using the metal mold | die produced after that.

  As is clear from the above description, in the matte method for resin parts according to the embodiment of the present invention, the drawn pattern and the geometric pattern are simultaneously patterned on the mold by one etching process. The time required for the matting process can be shortened and the cost required for the matting process can be reduced. Further, according to such a matting method, the shape, size, depth, etc. of the geometric pattern can be arbitrarily set on the image processing apparatus.

  Further, according to the matte method for resin parts according to the embodiment of the present invention, it is possible to confirm the change in the glossiness of the resin part surface accompanying the change in the depth and diameter of the geometric pattern on the image processing apparatus. At the same time, it is possible to arbitrarily set the important and unnecessary portions of the geometric pattern using the confirmation result. Specifically, as a result of earnest examination of the change in the glossiness of the resin component surface accompanying the change in the geometric pattern depth, as shown in FIG. It was found that it should be in the range of 10 to 35 [μm]. When the depth of the geometric pattern is 10 [μm] or less, the glossiness of the surface does not change greatly, and conversely, when the depth of the geometric pattern is 35 [μm] or more, the appearance of the drawn pattern looks good Will be affected.

  Further, as a result of intensive studies on the optimum diameter of the geometric pattern, as shown in FIG. 3, the inventors of the present invention have found that the diameter of the geometric pattern should be in the range of 15 to 25 [μm]. . If the diameter of the geometric pattern is 15 [μm] or less, it becomes difficult to form a desired diameter by etching, and conversely, if the diameter of the geometric pattern is 25 [μm] or more, the aperture is reduced. The appearance of the pattern will be affected.

  As mentioned above, although embodiment which applied the invention made | formed by this inventor was described, this invention is not limited by the description and drawing which make a part of indication of this invention by this embodiment. That is, it is added lastly that other embodiments, examples, operation techniques, and the like made by those skilled in the art based on the above embodiments are all included in the scope of the present invention.

It is a flowchart figure which shows the flow of the matting method of the resin-made components used as embodiment of this invention. It is a figure which shows the change of the glossiness of the resin-made component surfaces accompanying the change of the depth of a geometric pattern. It is a figure which shows the range of the optimal diameter of a geometric pattern.

Claims (3)

A matte method for a resin part that mattes a resin part surface by forming a drawn pattern and a fine geometric pattern on the surface of the resin part,
Generating combined image data obtained by combining the image data of the aperture pattern and the image data of the geometric pattern by image processing (S1);
A step (S2) of producing a mask film in which a composite image is patterned using the generated composite image data;
A step (S3, S4, S5) of patterning a composite image on the mold surface by etching the mold surface using the produced mask film;
And a step of drawing and pressing the surface of the resin part using a mold on which a composite image is patterned.   2. The method for matting a resin part according to claim 1, wherein the geometric pattern is composed of a plurality of circular patterns.   The matte method for resin parts according to claim 1 or 2, wherein the geometric pattern is composed of a plurality of patterns arranged in a line. .

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