KR100317510B1 - Method for fabricating door - Google Patents

Abstract

PURPOSE: Provided is a production process of a door which adds a second color to a single color SMC(sheet molding compounding) door so that it complements single color of the SMC to contribute cubic effect to pattern grain. CONSTITUTION: The production process of the door comprises the steps of: (i) producing a door which includes a first color with an embossing part and an engraving part included; (ii) coating a second color on the front side of the door; (iii) drying the painted door; and (iv) eliminating the second color painted in the embossing part except the engraving part by polishing the second color painted in the embossing part.

Description

Method for fabricating door

The present invention relates to a method for manufacturing a door, and more particularly, to a door coating method for painting a door having a specific color as a whole as well as the surface to have at least two colors.

In general, doors used in houses or other buildings are manufactured to have a beautiful appearance depending on the application.

Such doors include wooden doors, skin doors, ABS (Acryl Butadiene Styrene) doors, and SMC (Sheet Molding Compounding) doors.

Most wooden doors are manufactured by omission of colored paint, polished with varnish or lacquer, and then finished. Skin doors are made by spraying colored paint on the door and checking and correcting the painted surface after spraying. In addition, the ABS door is produced by a method that does not paint by determining the color already at the time of molding, SMC door is not already painted by determining the color at the time of molding like the ABS door.

In particular, the ABS door or the SM door does not have a beautiful appearance, and the color sheet is attached to express two or more colors or patterns.

However, such color sheets are disadvantageous to heat and easily deformed. On the other hand, in order to express two or more colors on the ABS door or SM door, the spray coating method applied to the skin door can be applied, but the durability of the color is weak due to the low adhesion of the paint on the door surface due to the characteristics of the material There are disadvantages.

Accordingly, it is an object of the present invention to provide a method of manufacturing a door having a high adhesion and a beautiful appearance capable of expressing two or more colors.

1 is a plan view of a door made by the method of the present invention.

FIG. 2 is a cross-sectional view taken along the line II-II of FIG. 1. FIG.

Figure 3 is a process diagram showing the coating method of the door according to an embodiment of the present invention.

The door manufacturing method of the present invention for achieving the above object comprises the steps of preparing a door having a material of a first color; Processing the door to have an intaglio of a specific pattern; Painting the front surface of the door in a second color; And removing the material of the second color coated on the embossed portion except the engraved portion.

Removing the second color material of the embossed portion is preferably carried out about 350 to 400 times using abrasive paper.

Other objects and advantages of the present invention will become apparent from the detailed description of the invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a plan view of a door manufactured by applying the method of the present invention, Figure 2 is a cross-sectional view taken along the line II-II of FIG. 1 and 2, the door 10 includes embossed portions 2 having a first color and engraved portions 4 having a second color. The door 10 preferably has a pattern of solid wood.

Molding compound containing unsaturated polyester resin, calcium carbonate, curing agent, release agent, diluent, glass fiber, and colorant by molding using a mold to have an embossed part (2) and engraved parts (4), the first color For example, a yellow or white door is prepared (ST1). Here, the first color corresponds to the color of the embossed portion of the final door.

Next, the paint of the second color is coated on the front surface of the door 10 (ST2). For example, the second color may be slightly darker or lighter than yellow when the first color is yellow, and the green color may be used when the first color is white, and vice versa. Spray coating methods are used in the present embodiment, optionally other known coating methods may be used. By the painting process, the embossed portion 2 and the engraved portion 4 of the door are painted in the second color, and the door on which the painting is completed is completely dried.

Next, the dried door is polished (ST3). Polishing is performed until the paint of the second color coated on the embossed portions 4 is completely removed. Various methods may be used as the polishing process, but in the present embodiment, the polishing paper is polished about 350 to 400 times using polishing paper. Upon completion of the polishing process, the embossed portion 2 has a first color and the engraved portion 4 has a second color.

When the polishing process is completed, the product is packed and shipped after the final quality control process.

Preferably, after the polishing process, an urethane-free transparent coating is further applied to smoothly coat the surface roughened by the polishing process.

Meanwhile, in the above-described embodiment, the case in which the first color is yellow, white, and the second color is darker or lighter than yellow and a green color is used, but various other colors may be applied in addition to the above colors. .

As described above, the door coating method of the present invention, by adding a second color to the SMC door of a single color, complements the uniformity of the color that is a disadvantage of the existing SMC door, and has a beautiful appearance by giving a three-dimensional effect to the pattern texture Provide a door.

In addition, the durability of the door pattern can be improved by using the spray method instead of the adhesion type.

In addition, by applying the SMC material resistant to heat, moisture, and flame in the manufacture of the door, it is possible to provide a door having a beautiful appearance for a long time without being easily deformed according to the change of environment.

Although specific embodiments of the present invention have been illustrated and described herein, modifications and variations will be apparent to those of ordinary skill in the art. Accordingly, the following claims are intended to embrace all such alterations and modifications without departing from the spirit and scope of the invention.

Claims (6)

Preparing a door having a material of a first color and having an embossed portion and an engraved portion; Painting the front surface of the door in a second color; Removing the material of the second color painted on the embossed portion except for the engraved portion. The method of claim 1, further comprising the step of drying the painted door between the painting step and the removing step, wherein the removing step is a second colored material painted on the relief after completion of the drying step. Method of producing a door, characterized in that to remove by grinding. The method of claim 2, wherein the polishing is performed in the range of 350 to 400 times using abrasive paper. The method of claim 1, wherein the preparation of the door having the first color is performed by molding a molding compound using a mold. The method of claim 1, wherein the door is an SM door comprising an unsaturated ester resin, calcium carbonate, a curing agent, a releasing agent, a diluent, a glass fiber, and a colorant. The method of claim 1, further comprising, after completion of the polishing process, an unvarying transparent coating of the surface with a urethane material.