CN101204903A - Forming method of surface pattern of article - Google Patents

Abstract

A method for forming the pattern on the surface of an object includes such steps as providing a metal mother die with a pattern, pouring a liquid plastic on the metal mother die to copy the working die with the shape corresponding to the metal mother die, pouring a liquid resin in the cavity of the working die, covering the object to be processed in the cavity of the working die, and pressing the object to be processed to combine the solidified liquid resin with the surface of the object to be processed to form a stereo pattern. In practice, before the liquid resin is poured, at least one color layer can be added on the pattern in the cavity of the working mold in advance, or liquid resins with different formulas can be respectively poured on different parts of the pattern in the cavity of the working mold, or the two can be simultaneously carried out, so as to increase the change of the surface pattern.

Description

A method for forming a surface pattern of an article

technical field

The invention relates to a method for forming a pattern on the surface of an article, especially a method for duplicating a plurality of working molds by means of a metal master mold, and then using the working molds to form a three-dimensional pattern on the surface of the article.

Background technique

The method of forming a three-dimensional pattern on the surface of an article, the current common technology, in addition to the way of dispensing or dripping glue, is mainly to set the required shape or pattern in the mold cavity of a metal mold, and use it in a liquid state. The plastic is poured into the mold cavity, and artificial synthetic leather, textiles, metal parts and other items are covered on the liquid plastic, and then pressurized by a hot press and heated for a period of time to make the liquid plastic solidify and bond to the surface of the item.

With the above mold forming method, although a three-dimensional pattern can be formed on the surface of the article, the three-dimensional pattern is solidified by a single material or color of liquid plastic, which appears monotonous after molding, which does not meet the needs of some people. demand.

In addition, in the above-mentioned manufacturing process, in order to make the cured finished product easy to take out, a release agent must be sprayed in the mold cavity before processing. This step is likely to cause workers to inhale a large amount of volatilized release agent gas, causing bodily harm.

Furthermore, when the items are mass-produced, more metal molds must be provided correspondingly. Since the manufacturing cost of metal molds is quite expensive, a higher manufacturing cost will be paid virtually.

In view of this, in order to improve the above-mentioned shortcomings, the method of forming the surface pattern of the article can not only form a variety of three-dimensional patterns on the surface of the article, avoid the damage caused by the release agent to the human body, but also reduce the use of metal molds to save manufacturing costs. Cost, the inventor's many years of experience and continuous research and development improvement, have the generation of the present invention.

Contents of the invention

The main purpose of the present invention is to provide a method for molding the surface pattern of an article. By virtue of duplicating a plurality of working molds with a metal master mold, and then forming a three-dimensional pattern on the surface of the article with the working mold, the use of metal molds can be reduced to save manufacturing cost.

The secondary purpose of the present invention is to provide a method for molding the surface pattern of an article. By virtue of the self-lubricating characteristics of the working mold itself, the liquid plastic grease is easy to detach after curing, which can reduce the use of release agents and avoid causing harm to the human body. .

Another object of the present invention is to provide a method for molding the surface pattern of an article, by simultaneously pouring liquid resins of different formulations on the pattern in the mold cavity of the working mold, or adding at least one color layer to the pattern in advance before pouring the liquid resin The above steps can make the three-dimensional pattern on the surface of the article have a variety of colors or material changes, so as to attract the attention of users and promote sales.

For reaching the purpose of above-mentioned invention, the molding method of article surface pattern provided by the present invention mainly comprises the following steps: a. provide a metal master mold, and establish a pattern on the metal master mold; b. pour a liquid plastic on the metal On the master mold, to copy a working mold with a corresponding shape on the metal master mold; c. pour a liquid resin into a cavity formed by the working mold; d. cover the cavity of the working mold with a processed object on the liquid resin; and e. applying pressure to fix the object to be processed and to bond the cured liquid resin to the surface of the object to be processed.

During implementation, it also includes a step of pre-adding at least one color layer on the pattern in the cavity of the working mold before pouring a liquid resin.

During implementation, it also includes a step of respectively pouring liquid resins of different formulations on different parts of the concave pattern in the mold cavity of the working mold.

During implementation, the working mold is made of silica gel or polypropylene (PP) material.

For the convenience of a deeper understanding of the present invention, it is described in detail hereafter:

Description of drawings

FIG. 1 is a flowchart of the steps of the first embodiment of the present invention.

Fig. 2 is a three-dimensional appearance view of the metal master mold of the first embodiment of the present invention.

Fig. 3 is a three-dimensional appearance view of the working mold of the first embodiment of the present invention.

Fig. 4 is a schematic diagram of steps c and d of the first embodiment of the present invention.

FIG. 5 is a step diagram of the second embodiment of the present invention.

Explanation of reference signs: 1-metal master mold; 11-pattern; 2-working mold; 21-cavity; 22-indented pattern; 3-liquid resin; 4-processed article; 9-mold.

Detailed ways

The above and other technical features and advantages of the present invention will be described in more detail below in conjunction with the accompanying drawings.

See also shown in Fig. 1, it is the first embodiment of the forming method of article surface pattern of the present invention, mainly comprises the following steps:

a. Provide a metal master mold 1, and set a pattern 11 on the metal master mold 1;

b. Pouring a liquid plastic on the metal master mold 1 to replicate a working mold 2 corresponding to the shape of the metal master mold 1;

c. pouring a liquid resin 3 into a mold cavity 21 formed by the working mold 2;

d. cover the liquid resin 3 in the mold cavity 21 of the working mold 2 with a processed article 4; and

e. Applying pressure to fix the object 4 to be processed, and make the solidified liquid resin 3 bond to the surface of the object 4 to be processed.

Please refer to shown in Fig. 2, in the present embodiment, the metal master mold 1 of step a is arranged on the top of a box-shaped mold 9, and described metal master mold 1 is convex, forms a three-dimensional shape on its surface. The pattern 11, the pattern 11 can also be a concave shape. The metal master mold 1 can also be in other different shapes, which are not specifically limited here.

In step b, the liquid plastic is made of silica gel, and the liquid plastic can also be polypropylene (PP) or polyethylene (PE). Die 1 on. Said liquid plastics can also be molded on the surface of the metal master mold 1 in an injection mode, so as to reproduce a working mold 2 (as shown in Figure 3 ) corresponding to the molding of the metal master mold 1, that is, when said metal master mold When the mold 1 is in a "convex" shape, the working mold 2 is in a "concave" shape.

Please refer to FIG. 4 , in step c, a liquid resin 3 is poured into the mold cavity 21 formed by the working mold 2 , and after the pouring is completed, the overflowing residue is cleaned up. The above-mentioned liquid resin 3 is made of polyurethane (PU), and the liquid resin 3 can also be plastic materials such as polyvinyl chloride (PVC). During implementation, the present invention can not only use the liquid resin 3 of a single formula, but also the liquid resin 3 of multiple different formulas can be respectively poured on each different position of the concave pattern 22 in the mold cavity 21 of the working mold 2, so as to be in a The surface of the processed object 4 simultaneously forms a variety of changes in physical property patterns.

In step d, the processed article 4 is a fiber product, and the processed article 4 can also be made of materials such as synthetic leather, natural leather, wood, plastic, rubber or metal, so as to directly cover the filled In the mold cavity 21 of the working mold 2 of the liquid resin 3. In step e, the above-mentioned processed article 4 is pressurized by means of a mechanical press table or a press plate, so that after the liquid resin 3 solidifies, it combines with the surface of the processed article 4 to produce a metal bond after demoulding. The master mold 1 has the same shape and pattern 11 as the product.

Please refer to Fig. 5, which is the second embodiment of the forming method of the surface pattern of the article of the present invention. It also includes a coloring step b' before the above-mentioned step c, which is to print a colored layer in advance in the cavity 21 of the working mold 2. On the inner concave pattern 22, if the said pattern 22 is convex, the color layer can also be printed on its surface. In addition, the coloring method can also be transfer printing, spraying or color filling, and the color layer can also be a variety of different colors, which are respectively formed on different parts of the concave pattern 22 .

During implementation, the present invention can also combine the above-mentioned step b' of coloring with the step of pouring liquid resin 3 with various formulations into different parts of the concave pattern 22, so as to produce a multi-color and multi-color A physical product.

Therefore, the present invention has the following advantages:

1. The present invention can effectively reduce the use of metal molds when manufacturing objects with three-dimensional patterns, so as to save manufacturing costs.

2. The present invention can rely on the characteristics of the working mold to make the liquid plastic easy to separate when solidified, which can effectively reduce the use of release agents and avoid harm to the human body.

3. The present invention can make the three-dimensional pattern on the surface of the article have multiple colors or changes in the physical properties of the material to attract the attention of users, which can not only increase the added value of the product, but also promote sales.

To sum up, according to the content disclosed above, the present invention can clearly achieve the expected purpose of the invention, and provide a variety of three-dimensional patterns that can not only be formed on the surface of the article, but also avoid the harm caused by the release agent to the human body, and can Reduce the use of metal molds to save the manufacturing cost of the molding method of the surface pattern of the article, which is of great value in industrial use, and the invention patent application is filed in accordance with the law.

The above descriptions are only preferred embodiments of the present invention, and are only illustrative rather than restrictive to the present invention. Those skilled in the art understand that many changes, modifications, and even equivalents can be made within the spirit and scope defined by the claims of the present invention, but all will fall within the protection scope of the present invention.

Claims (4)

1. A molding method for an article surface pattern, characterized in that: comprising: providing a metal master and setting a pattern on the metal master; Pouring a liquid plastic on the metal master mold to replicate a working mold corresponding to the shape of the metal master mold; pouring a liquid resin into a mold cavity formed by the working mold; Covering the liquid resin in the cavity of the working mold with an article to be processed; and Apply pressure to fix the object to be processed and bond the cured liquid resin to the surface of the object to be processed. 2. The molding method according to claim 1, further comprising a step of pre-adding at least one color layer on a pattern in the mold cavity of the working mold before pouring a liquid resin. 3. The molding method according to claim 1, further comprising a step of respectively pouring liquid resins of different formulations into different parts of a concave pattern in the cavity of the working mold. 4. The forming method according to claim 1, characterized in that: the working mold is made of silica gel or polypropylene.

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