CN102862261A - In-mold molding injection product relief production process - Google Patents

Abstract

The invention discloses an in-mold forming injection molding product relief production process, which comprises the following steps: 1) sheet material cutting; 2) sheet material four-color printing; 3) sheet material spot color printing; 4) sheet material surface coating film; 5) sheet punching; 6) sheet blanking; 7) sheet thermoforming; 8) sheet trimming; 9) sheet wiping; 10) sheet in-mold injection molding; 11) product Repair scraping; 12) Obtain the injection molded finished product with embossed pattern effect. The embossed production process of the in-mold injection molding product provided by the present invention, through the color printing of the sheet and the in-mold injection molding process of the sheet, makes the original planar picture product have an embossed effect, the protruding effect of the pattern is good, and it is more three-dimensional. It is more tactile and visually more dynamic.

Description

In-mold molding injection product relief production process

technical field

The invention relates to the technical field of injection molding, in particular to an in-mold molding injection molding product relief production process.

Background technique

In-mold injection molding, English is IMD, and the full English name is In-Mold Decoration. IMD is a popular surface decoration technology in the world at present. The surface is hardened and transparent film, the middle printing pattern layer, and the back injection molding layer. Since the ink is set in the middle, it can make the product resistant to friction, prevent the surface from being scratched, and maintain a bright color for a long time without fading.

The Chinese invention patent application number is: "CN201010235757.0", and the patent name is: "A method for injection molding of in-mold decoration" The application document discloses "A method for injection molding of in-mold decoration, which includes the following steps: A) Primary molding stage: provide a film printed with a decorative pattern, send the above film into the first forming mold, make the first male mold and the first female mold of the first forming mold close the molds on both sides of the above film respectively, Injection molding with a transparent injection molding material to obtain a primary molding product; B) Let the above primary molding product stand for a set time; C) Secondary molding stage: Put the above primary molding product into the master mold of the second molding mold for secondary molding In this process, non-transparent injection molding materials are used for secondary injection molding to obtain finished products." The three-dimensional effect of the finished product formed by this method is not strong, and the concave-convex feeling is not obvious enough to touch.

Contents of the invention

Aiming at the deficiencies in the above-mentioned technologies, the present invention provides an in-mold molding injection molding product embossment production process, which can make the original planar picture product have an embossed effect, have a more three-dimensional effect, a more hand feeling, and a more dynamic visual sense .

In order to achieve the above object, the present invention provides a relief production process for in-mold injection molding products, comprising the following steps:

1) Sheet cutting: select a suitable sheet and cut the sheet;

2) Four-color printing on sheets: use four-color printing to form color patterns on the pre-cut sheets;

3) Spot color printing on sheet: use spot color printing on the sheet with color pattern to improve the pattern color and make the pattern more gorgeous;

4) Covering the surface of the sheet: cover the sheet with a gorgeous pattern with a protective film;

5) Sheet punching: punch holes in the sheet covered with protective film;

6) Sheet blanking: blanking the perforated sheet;

7) Hot press forming of sheet material: use hot pressing process to hot press form the sheet material and the protective film covered thereon;

8) Sheet trimming: trim the sheet according to the specifications;

9) Sheet wiping test: wipe the trimmed sheet;

10) Injection molding of sheet material: the sheet material with burrs removed is formed by injection molding process of sheet material;

11) Product repair and scraping: repair and scrape the product to remove burrs;

12) Obtaining finished products: obtaining injection-molded finished products with embossed pattern effects.

Among them, before step 10, the relief part on the surface of the sheet should be designed according to the maximum shape of the forming mold, and the color area should be 0.1MM-0.15MM slightly smaller than the outline of the forming mold.

Among them, before step 10, the front mold of the injection mold needs to be designed with the same relief effect as the surface of the product drawing.

The beneficial effects of the present invention are: compared with the prior art, the relief production process of the in-mold injection molding product provided by the present invention, through the color printing of the sheet and the process of the in-mold injection molding of the sheet, makes the original planar picture product have a relief Effect, the protruding effect of the pattern is good, more three-dimensional, more hand-feeling, and more visually dynamic.

Description of drawings

Fig. 1 is the process flow chart of in-mold molding injection product relief production worker of the present invention;

Fig. 2 is a structural diagram of the in-mold injection molding product of the present invention.

The main component symbols are explained as follows:

101. Shell main body 102. Embossed pattern

Detailed ways

In order to express the present invention more clearly, the present invention will be further described below in conjunction with the accompanying drawings.

Please refer to Fig. 1, the in-mold molding injection molding product relief production process of the present invention comprises the following steps:

1) Sheet cutting: select a suitable sheet and cut the sheet;

2) Four-color printing on sheets: use four-color printing to form color patterns on the pre-cut sheets;

3) Spot color printing on sheet: use spot color printing on the sheet with color pattern to improve the pattern color and make the pattern more gorgeous;

4) Covering the surface of the sheet: cover the sheet with a gorgeous pattern with a protective film;

5) Sheet punching: punch holes in the sheet covered with protective film;

6) Sheet blanking: blanking the perforated sheet;

7) Hot press forming of sheet material: use hot pressing process to hot press form the sheet material and the protective film covered thereon;

8) Sheet trimming: trim the sheet according to the specifications;

9) Sheet wiping test: wipe the trimmed sheet;

10) Injection molding of sheet material: the sheet material with burrs removed is formed by injection molding process of sheet material;

11) Product repair and scraping: repair and scrape the product to remove burrs;

12) Obtaining finished products: obtaining injection-molded finished products with embossed pattern effects.

Compared with the situation of the prior art, the embossed production process of the in-mold injection molding product provided by the present invention, through the color printing of the sheet and the in-mold injection molding process of the sheet, the original planar picture product has an embossed effect, and the embossment of the pattern The output effect is good, more three-dimensional, more hand-feeling, and more visually dynamic.

In this embodiment, before the above step 10, the relief part on the surface of the sheet should be designed according to the maximum shape of the molding die, and the color area should be slightly smaller than the contour line of the molding die by 0.1MM-0.15MM.

In this embodiment, before the above step 10, the front mold of the injection mold needs to be designed with the same relief effect as the surface of the product drawing.

In the actual process, the forming punch of the upper mold of the forming mold needs to be designed with the same convex effect as the surface of the product, and the inner pressure plate of the lower mold of the forming mold needs to be used as a movable insert in the relief effect part of the product. It plays the role of positioning the pressing material. Note that the shrinkage rate of the forming mold must be consistent with that of the injection mold. The shape part of the punch surface of the trimming die and the lower die must be aligned with the convex part of the product surface to ensure the clarity of the concave and convex effect on the surface of the sheet and the uniformity of the periphery of the sheet.

Please refer to Figure 2, according to the production process in Figure 1, the in-mold injection molding product as shown in the figure has been obtained. The structure shown in the figure is a shell that is compatible with the mobile phone products produced by Apple Mobile Company, 101 is the main body of the shell, and 102 It is a relief pattern, and it can be found that the pattern shown in 102 has an obvious raised effect by touching it with hands.

The above disclosures are only a few specific embodiments of the present invention, but the present invention is not limited thereto, and any changes conceivable by those skilled in the art shall fall within the protection scope of the present invention.

Claims (3)

1. an in-molded injecting products embossment production technology is characterized in that, may further comprise the steps:

1) sheet material is opened material: select suitable sheet material, and this sheet material is opened material;

2) sheet material four-color process: form multicolour pattern with four-color process technique at the sheet material of holding material successfully;

3) sheet material spot color printing: use again spot color printing on the sheet material of multicolour pattern having, improve pattern color, make pattern more gorgeous;

4) sheet surface overlay film: cover upper protective film at the sheet material that obtains gorgeous pattern;

5) sheet material punching: punch at the sheet material that covers upper protective film;

6) sheet material blanking: the sheet material blanking that will punch;

7) sheet material is hot-forming: utilize heat pressing process that the diaphragm of the upper covering of sheet material and its is hot-forming;

8) sheet material is cut edge: according to specification requirement to the sheet material processing of cutting edge;

9) sheet material is wiped examination: the sheet material of wiping through cutting edge and processing;

10) sheet material in-mould injection moulding: the sheet material that will remove burr utilizes sheet material in-mould injection technological forming;

11) product is repaiied and is scraped: product is repaiied scraped, remove burr;

12) obtain finished product: obtain having the injection-molded finished of relief pattern effect.

2. in-molded injecting products embossment production technology according to claim 1 is characterized in that, before step 10, the sheet surface embossment partly need be by the maximum configuration design of shaping mould, and color region should be than the slightly little 0.1MM-0.15MM of shaping mould trim line.

3. in-molded injecting products embossment production technology according to claim 1 and 2 is characterized in that, before step 10, the injection mold front mould need design the anaglyph the same with product figure surface.

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