KR20170094956A

KR20170094956A - Double injection molding method of bowl have different color and thereof bowl

Info

Publication number: KR20170094956A
Application number: KR1020160016328A
Authority: KR
Inventors: 이진구
Original assignee: 이진구
Priority date: 2016-02-12
Filing date: 2016-02-12
Publication date: 2017-08-22

Abstract

Disclosed is a double injection molding method of a dish having different colors. According to the present invention, the double injection molding method comprises the following steps: a) manufacturing a mold for manufacturing an inner body; b) molding an inner body of a dish; c) manufacturing an outer body outer mold; d) combining an inner body inner mold and the outer body outer mold produced in step c); and e) obtaining a dish having different colors by molding and deforming the outer body of the dish by feeding and hardening a resin, which is different from and has a different color from that of a resin forming the internal body, or a resin, which is the same as and has a different color from that of the resin forming the internal body, between the inner body inner mold and the outer body outer mold coupled with each other in step d). According to the present invention, the inner body and the outer body of a dish can be molded with different resins with different colors, or with the same resin with different colors. Thus, it is possible to prevent a phenomenon in which the inner body and the outer body are separated from each other even when being used for a long period of time.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a double injection method of a bowl having different colors and a double injection vessel made by the method.

The present invention relates to a double injection method of a vessel having different colors and a double injection vessel manufactured by the method. More particularly, the present invention relates to a double injection apparatus for producing a double injection vessel of a color different from that of a vessel including a rice bowl, The present invention relates to a double injection method of a vessel different in color that can enhance the appearance of a vessel by injection molding different colors of the vessel and a double injection vessel manufactured by the method.

Generally, a plastic bowl (tableware) is made of polyethylene terephthalate (PET), acrylonitrile-butadiene-styrene resin (ABS), saturated polyester resin and melamine resin.

However, since such a plastic-based vessel is manufactured by a single injection method using a single mold, when the inner and outer portions of the vessel are formed in different colors, the inner and outer surfaces of the vessel are coated with different coatings or coated Method.

As an example, Korean Patent Laid-Open No. 10-2014-125231 (Laid-open date: 2014.10.28) discloses a method for producing a tableware. A step of heating a melamine resin powder to a predetermined temperature to form a gel state, placing the melamine resin powder on a mold, pressing the melamine resin powder to form a predetermined tableware, and molding a predetermined one of the plurality of melamine resin powders on the inner surface of the shaped tableware, And a pattern fixing step of pressing the pattern or two or more patterns into a predetermined shape and then pressing the mold with a mold so as to intrude into the interior of the molding utensil and fix it so as to be integrated, A pattern or the like is prepared in advance, a pattern is firstly disposed on the tableware, and then the pattern is joined to the tableware by pressing again.

Such a tableware manufacturing method is difficult to make a presentation such as changing colors by forming a pattern in a bowl.

As another manufacturing method, a container is made of a material that is a basic material when the container is manufactured, and then one side of the container, for example, the inner side or the outer side, is coated with another material, or two pieces are made of different materials, .

However, in the case of a plastic-based bowl manufactured by the lacquering method or the coating method described above and having different colors of the inner surface portion and the outer surface portion, there is a problem that the paint or the coating easily peels off while repeating use and washing. There is a problem that the adhesive portion is separated and can not be used for a long time.

. Korean Patent Publication No. 10-2014-125231 (Publication date: Oct. 28, 2014)

It is an object of the present invention to provide a double injection method of a bowl different in color that can improve the appearance of the bowl by differently molding the outer color and the inside color of the bowl including the rice bowl or the soup bowl or the side dish bowl made of the synthetic resin material And a method therefor.

The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to at least partially solve the problems in the conventional arts. It can be understood.

According to the present invention, there is provided a method of manufacturing an inner body inner body and an inner body outer metal mold for manufacturing an inner body of a vessel, wherein the outer surface of the inner body inner mold is finely ground to 0.01 to 1 탆 Ra, Preparing an inner body manufacturing mold by roughing the inner surface of the inner mold half with a radius of 2 탆 Ra - 10 탆 Ra or forming a concave / convex portion to form a coupling portion; b) molding the inner body of the vessel by injecting resin between the inner body inner mold and the inner body mold after cementing the inner body inner mold and the inner body outer mold, and then hardening the resin; c) preparing an outer body mold for manufacturing the outer body of the vessel, wherein the inner surface of the outer body outer mold is mapped with 0.01 to 1 탆 Ra; d) separating the inner mold from the inner mold when the inner mold is manufactured in step b), removing only the inner mold from the inner mold while leaving the inner mold in the inner mold And combining the inner body inner mold having the inner body of the vessel and the outer body outer mold manufactured in the step c); And e) injecting another resin of a color different from that of the resin forming the inner body or the same resin of a different color between the inner body inner mold and the outer body outer mold coupled to each other in the step d) And a step of shaping and demolding the outer body of the vessel to obtain vessels of different colors.

The step c) may further include the step of forming an embossed or embossed shape forming part on the inner surface of the outer body mold to form a depressed or embossed shape on the outer surface of the utensil.

According to the present invention, the above objects can be accomplished by a method of producing a container by a double injection method of a vessel having different colors as described above, wherein the resin constituting the vessel is the same and the colors are different from each other, The present invention has been accomplished by a double injection apparatus manufactured by a double injection method of a different color vessel.

The outer surface of the outer body may be formed with an embossed or embossed shape.

According to the present invention, it is possible to form the inner body and the outer body of the vessel with different resins of different colors, or to form the inner body and the outer body from different colors of resin, thereby improving the beauty of the vessel, It is possible to prevent the phenomenon that the inner body and the outer body are separated from each other.

1 is a schematic flow chart for explaining a double injection method of a vessel having different colors according to the present invention.
Figure 2 is a cross-sectional view of a bowl made according to Figure 1
Figure 3 is a photograph of a bowl of different colors made by Figure 1;
Figure 4 is a cross-sectional view of another embodiment of a vessel of different colors made by Figure 1;

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, the well-known functions or constructions are not described in order to simplify the gist of the present invention.

1 is a schematic flow chart for explaining a double injection method of vessels of different colors according to the present invention, Fig. 2 is a cross-sectional view showing a vessel manufactured by Fig. 1, Fig. 3 is a cross- It is a photograph of a bowl of different colors manufactured by.

1, a dual injection method of a vessel having different colors according to the present invention will be described.

a) Step

This step is a step of manufacturing the inner mold manufacturing mold 10. In order to manufacture the container 100 using the double injection method of the container having different colors, The inner surface of the inner mold 12 and the inner surface of the inner mold 14 are formed into the same shape as the inner mold 12 and the inner mold 14, The inside surface is roughly machined to 2 占 퐉 Ra - 10 占 퐉 Ra, or concave and convex portions are formed to form a coupling portion.

In this manner, the outer surface of the inner-body inner mold 12 is subjected to the finishing process in the range of 0.01 to 1 탆 Ra in order to smoothly form the inner surface of the inner body 110 of the later-formed container 100. The inner surface of the inner mold 14 is subjected to roughing with a roughness of 2 탆 Ra to 10 탆 Ra or the uneven portion is formed to form the engaging portion 14A when the outer body 120 is molded 120 and the inner body 110 without being separated from each other. That is, the outer surface of the inner body 110 to be molded is roughly formed by roughening the inner surface of the inner-body outer metal mold 14, and in this state, the molten resin is mixed with the inner- When the molten resin is injected between the outer molds 16, the molten resin flows between the concaves and convexes formed on the outer surface of the inner body 110 and hardens so that the inner body 110 and the outer body 120 are firmly integrated will be.

b) Step

This step is a step for forming the inner body 110 of the vessel 100. After the inner body inner metal mold 12 and the inner body outer metal mold 14 are combined, the inner body inner mold 12 and the inner body outer mold 14), and then the resin is cured to form the inner body 110 of the container 100. At this time, the resin injecting device for injecting molten resin into the space between the inner-body inner mold 12 and the inner-outer-body mold 14 is well known and will not be described in detail.

c) Step

In this step, the outer body mold 16 for producing the outer body 120 of the vessel 100 is manufactured, and the inner surface of the outer body outer mold 16 is mapped with 0.01 to 1 탆 Ra, This is the step of manufacturing the outer mold. The reason why the inner surface of the outer squeeze mold 16 is mapped in the range of 0.01 to 1 탆 Ra is to smoothly form the outer surface of the outer body 120 of the finished vessel 100.

In order to form a depressed or embossed shape 122 on the outer surface of the container 100, a depressed or embossed depressed portion is formed on the inner surface of the outer depressed metal mold 16. That is, although not shown in the drawing, by forming the embossed or embossed shape forming portion in advance on the inner surface of the outer body outer mold 16, the outer surface of the outer body 120 of the molded container 100, An embossed or embossed shape 122 may be formed on the surface.

Since the shape of the bowl 122 is formed on the outer surface of the outer body 120 of the bowl 100 as described above, not only the beauty of the bowl 100 itself can be improved, but also, when the user attaches the bowl 100, Can be prevented.

d) Step

In this step, the inner body inner mold 12 and the outer body outer mold 16 are coupled to each other while the inner body 110 is positioned on the inner body mold 12 to form the outer body 120 This is a preparatory step for this. That is, when the inner body 110 of the vessel 100 is manufactured in the step b) described above, the inner body outer metal mold 14 is separated from the inner body inner metal mold 12, Only the inner body outer mold 14 is separated while the inner body 110 of the vessel 100 is left and the inner body inner mold 12 holding the inner body 110 of the vessel 100 and the inner body inner mold 12 holding the inner vessel 110 of the vessel 100, The external mold 16 is assembled.

e)

In this step, the resin forming the outer body 120 is injected into the space formed between the inner body inner mold 12 and the outer outer mold 16 to inject the outer material 120 into the already formed inner body 110 And a resin for forming the inner body 110 between the inner mold 12 and the outer mold 16 coupled to each other in the step d) Another resin of a different color or the same resin of a different color is injected and cured to form and demold the outer body 120 of the vessel 100 to obtain a vessel 100 of different colors.

3, the inner and outer bodies 110 and 120 of the vessel 100 are made of the same resin and have different colors from each other The inside and the outside of the bowl 100 can be configured in various colors because the color of the resin forming the inner body 110 and the outer body 120 of the vessel 100 can be different from each other.

For example, as shown in FIG. 3, the inner body 110 is made of a white resin, and the outer body 120 is made of soft pale green resin so that the image of the bowl 100 is calm and cool And it is possible to provide a warm and gentle image when the external body 120 is made of a pink resin or the like although it is not shown in the drawing.

By making the color of the bowl 100 different from each other, the bowl 100 can be suitably applied to the place and season of use.

As shown in FIG. 4, since the shape (122) of the engravings 100 is formed on the outer surface of the outer body 110 of the bowl 100, the overall appearance of the bowl 100 can be smoothly formed, So that slip or the like can be prevented.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It is obvious to those who have. Accordingly, it should be understood that such modifications or alterations should not be understood individually from the technical spirit and viewpoint of the present invention, and that modified embodiments fall within the scope of the claims of the present invention.

10: mold for manufacturing inner body 12: inner mold
14: inner mold 14A:
16: External mold 1
100: bowl 110: inner body
120: outer body 122: shape

Claims

a) preparing an inner body mold and an inner body mold for producing an inner body of a vessel, respectively, wherein the outer surface of the inner body inner mold is finely processed to 0.01 to 1 탆 Ra, A step of roughing the surface to 2 占 퐉 Ra - 10 占 퐉 Ra or forming a concave / convex portion to form a joint;
b) molding the inner body of the vessel by injecting resin between the inner body inner mold and the inner body mold after cementing the inner body inner mold and the inner body outer mold, and then hardening the resin;
c) preparing an outer body mold for manufacturing the outer body of the vessel, wherein the inner surface of the outer body outer mold is mapped with 0.01 to 1 탆 Ra;
d) separating the inner mold from the inner mold when the inner mold is manufactured in step b), removing only the inner mold from the inner mold while leaving the inner mold in the inner mold And combining the inner body inner mold having the inner body of the vessel and the outer body outer mold manufactured in the step c); And
e) injecting another resin of a color different from that of the resin forming the inner body or the same resin of a different color between the inner body inner mold and the outer body outer mold coupled to each other in the step d) Characterized in that it comprises the steps of forming an outer body and demolding to obtain a vessel of different colors,
Double injection method of different color bowl.

The method according to claim 1,
The step c)
Further comprising the step of forming an embossed or embossed shape forming portion on the inner surface of the outer body mold to form a depressed or embossed shape on the outer surface of the container,
Double injection method of different color bowl.

The color of the resin is different from that of the resin forming the inner body of the vessel and the color of the outer body of the vessel, &Lt; / RTI >
A double injection bowl made by a double injection method of a vessel of different colors.

The method of claim 3,
On the outer surface of the outer body,
Characterized in that an embossed or embossed shape is formed,
A double injection bowl made by a double injection method of a vessel of different colors.