JP2817037B2 - Method of manufacturing colored plastic ornaments - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a colored plastic decorative article having three-dimensionally colored letters, symbols, figures or patterns on the surface.

[0002]

2. Description of the Related Art Heretofore, coloring pages have been widely known as play equipment or educational materials for young children. As is well known, a coloring book consists of a sketch drawing only the outline of the picture pattern on paper, and the sketch is colored using a coloring material such as paint or crayon,
It is intended to enhance interest in painting while having fun, and to enhance the feeling of emotion.

[0003] A wide variety of colored plastic shaped products, whether soft or hard, are commercially available. For example, various products such as toys, dolls, artificial flowers, and shaped fruits are known. These colored plastic molded products are formed by punching a colored plastic sheet into a desired shape, or by using a molding die having a desired shape by injection molding, compression molding, extrusion molding, or the like. It is manufactured by a method in which heat and / or pressure, or both, are applied simultaneously to form.

[0004] However, since a shaped article manufactured from the above-mentioned colored plastic material is manufactured by the above-mentioned mechanical molding method, the shape is defined by the mold, so that the shape is made uniform and the color tone is increased. There are many drawbacks that are almost monochromatic, and monotonous products cannot be obtained.

[0005] Colored printed products of plastic sheets are commercially available. This is obtained by printing a flower pattern, a feature pattern, or the like in a desired color on a plastic sheet. However, the colored printed product of this plastic sheet does not have a three-dimensional effect because the colored surface is flat, and has a drawback that the print is peeled off when strongly rubbed or used for a long time. Was.

On the other hand, the present inventor has already produced a colored plastic painting / molded article in which a desired figure is drawn by using a colored vinyl chloride resin material by a technique such as coloring or painting and colored in a desired color tone. A fabrication method was proposed.
(JP-A-1-113300)

[0007]

SUMMARY OF THE INVENTION The above-mentioned Japanese Patent Application Laid-Open No. 1-11 / 1999
No. 3300 discloses a method for producing a colored plastic painting or molded article.
Drawing a pattern, (b) heating the metal plate, framing the sol-like colored vinyl chloride resin material along the lines of the figure / pattern in the sketch while heating the metal plate, and (c) removing the metal plate. (D) a step of extruding a sol-colored vinyl chloride resin material from a tube into a gap between the metal plate and the outline where the sketch is framed to paint a picture, and (e) drawing the metal plate with a hot plate. The method comprises a step of heating to cure the colored vinyl chloride resin, and a step of (f) cooling to peel off the cured colored vinyl chloride resin from the metal plate. The colored plastic painting / modeled article produced by this method is soft, and the convex figure of the colored vinyl chloride resin of the preliminary picture is formed on the surface, and the gap between the convex figures is transparent and / or colored vinyl chloride resin. The back surface is formed in a flat planar shape and has a feature that it can be in close contact with a planar portion.

However, this method uses a low-viscosity sol-shaped colored vinyl chloride resin material as the colored vinyl chloride resin material. In this case, since the resin flows, it must be performed on a heated metal plate by the above steps (a) to (c), and the metal plate is heated to a high temperature (about 17 ° C.).
(0 ° C.), the work is dangerous and difficult for infants, children or beginners, and the metal plate must be cooled thereafter, so that the heating-cooling-heating-
There is a disadvantage that the work process becomes complicated due to the repetition of the cooling and the process.

The present invention has been made in view of the above-mentioned colored plastic molded products, colored printed products of plastic sheets, and colored plastic paintings and molded products, and has two types of colored vinyl chloride resins having different viscosities. With no danger of work, simplify the work process, have a three-dimensional colored letters, symbols, figures or patterns on the surface, soft back glass windows, door doors, tiles, etc. It is an object of the present invention to provide a method of manufacturing a plastic decorative article which can be in close contact with a flat portion and which can be enjoyed as a decorative article.

[0010]

SUMMARY OF THE INVENTION The present invention relates to: (a) a method comprising the steps of: (a) containing silica airgel as a thickener along a line of a letter, symbol, figure or pattern drawn on a substrate; (B) filling the gaps between the trimmed letters, symbols, figures or patterns with a low-viscosity colored vinyl chloride resin to paint the picture (c) Next, a step of heating and curing the colored vinyl chloride resin to fuse them together (d) Cooling, the cured colored vinyl chloride resin is peeled off from the substrate, and is soft and the back surface can be in close contact with the flat portion. A method for producing a decorative article made of colored plastic, comprising a step of forming a planar shape.

In the present invention, the viscosity of the high-viscosity colored vinyl chloride resin is not less than 30,000 cp at room temperature, and is preferably a paste. Further, it is preferable that the high-viscosity colored vinyl chloride resin contains silica airgel to increase the viscosity.

In the present invention, the low-viscosity colored vinyl chloride resin has a viscosity of 4,000 cp or less at room temperature and is preferably in a liquid state. The substrate is preferably a heat-resistant substrate such as a metal plate, heat-resistant paper, or a heat-resistant glass plate.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a method for producing a colored plastic decorative article of the present invention will be described in detail. First, a desired character, symbol, figure, or pattern (hereinafter, abbreviated as “graphic or pattern, etc.”) is drafted on a substrate with quick-drying ink or the like, and a draft is drawn.

The substrate may be a substrate having heat resistance.
For example, a metal plate, a heat-resistant paper or a heat-resistant glass plate is preferable. Any metal plate can be used as long as it is made of a rust-resistant metal.
A stainless plate or the like is preferable. When drawing a draft, you can freely draw the desired figure or pattern, but also copy the original picture to the board by laying carbon paper etc. between the base paper on which the original picture is drawn and the board Can be. When a transparent or translucent substrate is used in heat-resistant paper or a heat-resistant glass plate, place the substrate on the original paper on which the original image such as a desired figure or pattern is drawn, and make the original image visible from the substrate. By drawing as it is, it can be copied to the substrate.

[0015] Next, the high-viscosity colored vinyl chloride resin is traced along a line such as a figure or a pattern of the draft, as it is. (Step a) The method of performing bordering is as follows:
High-viscosity colored vinyl chloride resin may be extruded from the extruding tube, or the extruding tube for each color resin may be set and automatically extruded at once.

The high-viscosity colored vinyl chloride resin may be any resin having such a hardness that the resin extruded on the line drawn in the sketch keeps the extruded shape at room temperature and does not flow. , Preferably 30,000 cp or more, more preferably 70,000 cp or more. Further, a paste-like colored vinyl chloride resin is preferable.

The high-viscosity colored vinyl chloride resin is preferably a resin obtained by adding a silica airgel as a thickening agent to a sol (liquid) low-viscosity colored vinyl chloride resin to increase the viscosity. Silica airgel forms a network structure in the plasticizer contained in the colored vinyl chloride resin, and acts to increase the viscosity or paste of the colored vinyl chloride resin to prevent flow. The content of silica airgel is usually 1 to 10
%, Preferably in the range of 3 to 5% by weight.

Next, a low-viscosity colored vinyl chloride resin is filled in the gaps of figures or patterns bordered by the above-mentioned method and painted to draw a picture. (Step b) The method of filling the resin may be to extrude a low-viscosity colored vinyl chloride resin in a sol form from an extrusion tube and sequentially inject the resin of each color into the gap, or to extrude a resin tube of each color. May be set and injected at once.

The low-viscosity colored vinyl chloride resin may be a sol (liquid) resin, for example, having a viscosity of 4,000 at room temperature.
It is desirably 0 or less, preferably 1,500 to 2,500 cp.

The compositions of the low-viscosity colored vinyl chloride resin and the high-viscosity colored vinyl chloride resin may be the same or different except for the thickener. Preferably, the high-viscosity colored vinyl chloride resin has a composition in which silica airgel is added as a thickener to a resin having the same composition as the low-viscosity colored vinyl chloride resin.

In this manner, the substrate on which the colored figure or pattern is drawn is placed on a hot plate and heated to about 180 ° C.
By heating at 220 ° C. for 2 to 10 minutes, the high-viscosity and low-viscosity colored vinyl chloride resins are cured and fused together. (Step c)

Then, the substrate is cooled with water or the like, and the cured colored vinyl chloride resin is peeled off from the substrate to form a soft, three-dimensional colored figure or pattern on the surface, and the rear surface is formed in a flat planar shape. A plastic decorative article can be obtained (step d).

The high-viscosity or low-viscosity colored vinyl chloride resin used in the present invention is housed in an extruded tube, and has primary colors such as red, blue, green, brown, white, and black;
Various translucent colored materials such as yellow and green or transparent materials can be used.

As the translucent colored vinyl chloride resin, for example, 0.05 to 3 parts by weight, preferably 0.1 to 1 part by weight of the colored vinyl chloride resin per 100 parts by weight of the transparent vinyl chloride resin.
Resins containing parts by weight are desirable. When such a translucent colored vinyl chloride resin is applied to and adhered to a white vinyl chloride resin, a vinyl chloride resin product having an enamel-like color can be obtained.

The color of the colored vinyl chloride resin material is as follows:
The color is not particularly limited to the above, and any color can be selected and used.

The hot plate is used to heat and cure the colored vinyl chloride resin material, and the heating means is preferably heated by electricity.

In the present invention, since a high-viscosity colored vinyl chloride resin is used for bordering a figure or pattern, the colored vinyl chloride resin is deformed or flows due to the high viscosity because of the raised border. Since no edging is performed on a metal plate heated to a high temperature of 160 to 180 ° C. as in the prior art, there is no danger of work, and even a beginner can work with peace of mind.

Next, a low-viscosity colored vinyl chloride resin having a desired color is filled in a gap portion such as a figure or a pattern bordered with the high-viscosity colored vinyl chloride resin, and the resin is subjected to one heating-cooling step. Since it can be cured and fused together to obtain a plastic decorative article, there is an advantage that the working steps are simplified without repeating the steps of heating, cooling, heating, and cooling as in the related art.

The plastic decorative article having a three-dimensional colored figure or pattern on the front surface manufactured by the above-described method of the present invention is soft and the rear surface is formed in a flat flat shape. It can be used as indoor decorations because it is in close contact with flat surfaces such as window glass, door doors, and tiles. Further, if a part of the plastic decorative article is cut out with scissors, a cutter or the like, it is suitable as an emblem or a sticker. It can also be used as a store display.

[0030]

The present invention will be described more specifically with reference to the following examples.

Embodiment 1 FIGS. 1A to 1C are process diagrams showing an embodiment of a method for producing a plastic decorative article according to the present invention. Hereinafter, description will be given based on the drawings. A plastic ornament having a three-dimensional flower coloring pattern on the surface shown in FIG. 1 was produced.

First, a sketch 2 of a flower pattern was drawn on an aluminum plate 1 using quick-drying ink. (See FIG. 1 (a).) Next, along the line of the sketch 2, the high-viscosity colored vinyl chloride resin is extruded using a tube containing a black high-viscosity colored vinyl chloride resin having the following composition to form a border 3 Was done. (See FIG. 1 (b))

High-viscosity colored vinyl chloride resin 100 parts by weight Dioctyl phthalate (plasticizer) 70 parts by weight Calcium carbonate 5 parts by weight Stabilizer (calcium-based) 2 parts by weight Pigment 1 part by weight (carbon black CI. No. 77266) Silica airgel 3 to 5 parts by weight Viscosity: about 80,000 cp at room temperature

Next, a tube containing a sol-like low-viscosity colored vinyl chloride resin of each color of red, blue, and yellow having the following composition is used for the fringed flower pattern gap 4 on the aluminum plate. A sol-like resin of each color was extruded from a tube, filled, painted, and painted. (See FIG. 1 (b))

Low-viscosity colored vinyl chloride resin 100 parts by weight Dioctyl phthalate (plasticizer) 70 parts by weight Calcium carbonate 5 parts by weight Stabilizer (calcium-based) 2 parts by weight Pigment 1 part by weight Viscosity: 1,500 at room temperature ~ 2,500cp

(Note) In the above composition, the following pigments were used as the red, blue and yellow pigments, respectively, to prepare low-viscosity colored vinyl chloride resins. Red: quinacridone red C.I. I. No. 73915 Blue: Copper phthalocyanine blue C.I. I. No. 74160 yellow : disazo yellow C.I. I. No. 21100

Next, the aluminum plate 1 on which the picture was drawn in this manner was placed on a hot plate heated to 200 ° C.
The mixture was heated for one minute to cure the high-viscosity and low-viscosity colored vinyl chloride resins and fused together.

Next, the aluminum plate was taken out of the hot plate, the aluminum plate was cooled with water, and the cured resin was gently peeled off to obtain a soft plastic ornament 5 having a three-dimensional colored pattern on the surface. . (See Fig. 1 (c))

The plastic decorative article thus obtained adheres when pressed against a glass window or other smooth surface, or is adhered to a desired surface using an adhesive or an adhesive as necessary. It can be used as a decoration.

[0040]

As described above, according to the present invention, there is no danger of work because a high-viscosity colored vinyl chloride resin is used for edging of a figure or a pattern. By filling a low-viscosity colored vinyl chloride resin of the desired color, heating, curing and fusing together, the work is simplified, the work process is simplified, and the surface having the desired figure or pattern is obtained. A plastic decorative article having a three-dimensional colored figure or pattern can be easily manufactured.

Since the plastic decorative article having a three-dimensional colored figure or pattern on the front surface is formed in a flat shape with a soft and flat back surface, it adheres to a window glass, a tile, etc., and is used as a decorative article. You can enjoy.

[Brief description of the drawings]

FIG. 1 is a process chart showing one embodiment of a method for producing a plastic decorative article of the present invention.

[Explanation of symbols]

 Reference Signs List 1 aluminum plate 2 sketch 3 border 4 gap 5 plastic decoration

Claims (4)

(57) [Claims] (A) Draft characters, symbols,
Silica Aero as a thickener along the lines of a figure or pattern
High viscosity character is step (b) the edging Trace the colored vinyl chloride resin perform edging of containing gel, symbols, and colored by filling a colored vinyl chloride resin having a low viscosity in the gap shapes or patterns picture (C) Then, heating to cure the colored vinyl chloride resin and fuse it together (d) Cool and peel the cured colored vinyl chloride resin from the substrate to make it soft and adhere the back surface to the flat part A method for producing a decorative article made of colored plastic, comprising a step of forming a flat planar shape that can be formed. 2. Silica in a high viscosity colored vinyl chloride resin
The content of the airgel is 1 to 10% by weight.
Method of manufacturing colored plastic ornaments. 3. A process for producing a high viscosity of the colored vinyl chloride resin viscosity is cold 30,000 cp or more claims 1 or 2, wherein the colored plastic ornaments. 4. The method for producing a colored plastic decorative article according to claim 1 , wherein the viscosity of the low-viscosity colored vinyl chloride resin is 4,000 cp or less at room temperature.