KR900004837B1 - Producing process for plastic mold label and apparatus therefor - Google Patents

Abstract

The method forms embossed patterns made of synthetic resin on the label material like fabric, metal, glass, plastic plate by die molding and hot-pressing. The apparatus includes lower die (3) formed in depressed-engraving pattern (2) by electolytic etching or engraving; opposite upper die (4) with perforating hole (5), heating pumps (9a,9b,9c,9d) to melt mixing resin and supply it to the pattern (2) through the hole (5). The method includes moving upper die (4) by cyeinder, filling the pattern (2) with melting resin, removing residual material, laying label material (B) on the lower die, pressing and HF heating, and sticking filled resin (A) to label material (B)

Description

Molding method and apparatus for molding molded resin label

1 is a general diagram of the present invention.

2 is a cross-sectional view of FIG.

Figure 3a, b, c, d is a cross-sectional view showing a process of molding a label with the present invention.

3d is a cross-sectional view of the finished label molded by the present invention.

4 and 5 are plan views showing other embodiments of the upper and lower molds of the present invention.

* Explanation of symbols for main parts of the drawings

1: expectation 2: engraved pattern

3: lower mold 4: upper mold

5: through hole 6: working cylinder

7: piston rod 8: scraper groove

9a, b, c, d: heating pump 10: automatic metering valve

11: heating wire 12: complete drawing and cooling device

13: automatic switching valve 14: piston

15a, b, c, d: air cylinder 16: compressed body

A: Synthetic resin filler B: Lamel base

17: completion label, drawing

The present invention is installed so as to reciprocate the upper mold punched through the hole corresponding to the intaglio glyph engraved on the upper surface of the lower mold to the reciprocating state to the lower mold surface, it is suitable for the filling amount of the intaglio glyph above the through hole of the upper mold A heating pump with an automatic metering valve for automatically supplying the amount of the mixed synthetic resin solution is installed, and after the mixed synthetic resin solution is automatically supplied to the intaglio of the lower mold, the upper mold moves to one side of the lower mold. Fill the mixed synthetic resin solution, and then put the label material such as woven fabric or metal, glass, or synthetic resin on the upper surface of the lower mold, and heat-compress the mixed synthetic resin pattern that was filled in the intaglio pattern on the label material. The pattern made of mixed synthetic resin protrudes embossed onto the label base in such a way that the mold is demolded on the lower mold It relates to a molding method and apparatus of a synthetic resin molded printed labels to be formed on the labels.

Conventional molding method of synthetic resin label is filled with PVC resin on the intaglio pattern by sweeping the upper surface of the metal plate with a knife on the plate by manually filling the PVC resin on the intaglio pattern engraved on the metal plate. After removing the remaining residues and heat treatment molding, apply adhesive to the top surface of the filled molding on the intaglio glyphs, and then compress the label substrate made of the fabric and apply heat simultaneously to make the molded pattern adhere to the label substrate. Although the label has been molded by a synthetic resin method, it is difficult to expect an improvement in work efficiency because the label is molded by the worker's artificial working means, and thus, a label made of PVC only has flexibility as in the prior art. After long period of time, it is easy to be affected by heat due to weakness of defect and heat resistance There were drawbacks, such as being deformed.

The present invention was created in order to solve the above-mentioned drawbacks, the lower mold is formed in the intaglio glyphs fixed, the upper mold is configured to be installed to reciprocate automatically operated the upper mold in accordance with the lower mold In this case, the heating pump automatically supplies the appropriate amount of the mixed synthetic resin solution to the intaglio through the through-hole of the upper mold, and the upper mold moves to fill the mixed synthetic resin solution in the intaglio of the intaglio while removing the residue. Then, the label material is placed on the intaglio glyph and heat-compressed, so that the pattern filled in the intaglio glyph is attached to the label material so that it is demolded when the label material is separated. By automatically operating the reciprocating operation of the mold, you can expect to increase the productivity of the product and to equalize the product. In addition, the present invention uses a synthetic resin solution such as silicone rubber and acrylic, epoxy, urethane, and PVC according to the selection of labeling materials, such as woven fabrics, metal plates, glass plates and synthetic resin plates, the decolorization phenomenon occurs It will be described in detail with reference to the accompanying drawings of the present invention to enable mass production of a product having excellent decorative effect.

FIG. 1 is a schematic installation diagram showing the overall flow chart of the present invention. The lower mold is made of metal or synthetic resin formed with several engraved glyphs 2 formed on the base 1 by engraving or electrolytic corrosion. (3) is fixedly installed, and the rails 4 'and 4 " protruding from the lower sides of the upper mold 4, which are installed on the upper surface in a welded state, are rail grooves 3 provided on the upper surface of the lower mold 3. ') (3 ") is slidably inserted, and the upper mold (4) is drilled through holes (5) to inject the synthetic resin (W) into the intaglio pattern (2) of the lower mold (3) In addition, the through hole 5 may be drilled into several pieces so that the synthetic resin solution W may be separately injected into the intaglio glyphs 2, or the synthetic resin solution W may be collectively placed in several negative glyphs 2. It can be drilled into one large so that it can be injected.

Then, by connecting the piston rod (7) of the operation cylinder (6) to one side of the upper mold 4, the upper mold (4) is configured to reciprocate the upper surface of the lower mold (3) by the forward and backward operation of the piston rod (7), The scraper groove 8 is recessed at the other bottom of the upper mold 4 so that the synthetic resin solution W that is excessively supplied to the intaglio glyph 2 when the upper mold 4 is moved to one side by the piston rod 7. Can be scraped.

Above each through hole 5 of the upper mold 4 corresponding to the intaglio pattern 2 of the lower mold 3, a heating pump having automatic metering valves 10 installed in the inference hole 9 ', respectively ( 9a), 9b), 9c), and 9c, but are connected to the compressor 12 at the top of each heating pump 9a, 9b, 9c, and 9d, intermittently by an automatic switching valve 13. Air cylinders 15a, 15b, 15c, and 15d equipped with a piston 14 that compresses only the set pressure are installed, and an electric heating pump 9a is provided at an end of the rod 14 'of each piston 14. (9b) (9c) and (9d), respectively, attaching a compression body (16) for compressing and draining the synthetic resin solution (W) stored in the above-described operating cylinder (6), automatic metering valve (10) and automatic switching valve. (13) is configured to interlock with each other at a predetermined time by the electric circuit.

The present invention with such a member will be described in more detail the method of forming a label and the operating state of the device as follows.

In each heating pump 9a, 9b, 9c, 9d installed in the same number as the intaglio pattern 2 of the lower mold 3, silicone rubber, acrylic, epoxy or urethane, etc. are used singly or they are appropriately proportioned. After the pigment and plasticizer are mixed and added to the synthetic resin material, the power is applied to the heating wire 11, and each heating pump 9a, 9b, 9c and 9d is heated to melt the injected material in a liquid state. The synthetic resin solution (W) thus liquefied maintains the liquid state at all times by the heat of the pre-speech 11.

In such a state, the piston rod 7 moves the upper mold 4 forward by the operation of the operating cylinder 6 so that the intaglio pattern 2 and the through hole 5 of the lower mold 2 coincide with each other. When the upper mold (4) is once stopped, the automatic switching valve (13) and the automatic metering valve (10) is automatically opened during the operation stop time of the operation cylinder (6). Opening operation of the valve 13 lowers the upper portions of the air cylinders 15a, 15b, 15c, and 15d, that is, the respective pistons 14, so that the compressed body 16 causes the heating pump 9a, 9b ( It is configured to open only as long as the compressed air is injected to the extent that the synthetic resin solution (W) present in the liquid state in 9c) (9d) can be supplied in the amount appropriate to the pattern volume of each engraved part (2). In addition, the opening operation of the automatic metering valve 10 mounted at each outlet 9 'is also adapted to the compression operation of the compression body 16. Since it is configured to operate only during the time of outflowing the synthetic resin solution (W), the operation cylinder (6) as in the electric state in each outlet (9 ') is stopped for a while after moving the upper mold (4) Through the through hole 5, a suitable amount of the synthetic resin solution W is supplied to each intaglio portion 2 (see FIG. 3A).

As described above, after the appropriate amount of the mixed synthetic resin solution (W) is supplied and filled to each intaglio part 2, the automatic switching valve 13 and the automatic metering valve 10 are closed again. The operation cylinder 6 starts the retraction operation so that the piston rod 7 moves the upper mold 4 to one side (right side in the drawing), in which the intaglio glyphs 2 are slightly larger than the intaglio glyph volume. Since the amount of the synthetic resin solution (W) is filled, as the upper periphery (4) moves, the strut periphery of each through hole (5) moves while scraping off the residue of the synthetic resin (W), and the remaining residue removed is removed from the lower mold ( 3) The scraper groove 8 formed on the bottom of the other side of the lower mold 3 is returned to the container 17 placed on one side, and the engraved glyph part was scratched once by the periphery of the bottom of each through hole 5. While scraping each upper surface of 2) once again The filling A filled in each intaglio portion 2 is in a flat state (see also 3b). Under such a state, a woven fabric, a metal plate, glass or When the label base material (B) made of synthetic resin is placed and pressed, and high frequency heat is applied, the filling A filled in each intaglio part 2 is attached to the label base material B (see also 3c). When the lower mold 3 is cooled under the same condition, the synthetic resin filler A attached to the label substrate B is spaced apart from the inner surface of the intaglio pattern 2 by shrinkage, thereby making it easy to demould. Subsequently, when the label substrate (B) is lifted off, the filling (A) is demolded accordingly, thereby forming a label having an embossed pattern on the label substrate (B) (see also 3d). (B) select the adhesive or pressure-sensitive adhesive on the back side to form an adhesive layer or adhesive (C) by the screen printing method and to complete the label by attaching a conventional release paper (D) coated with a silicone coating, or a label substrate ( B) When the label is used by spraying and attaching the adhesive resin on the back surface, the label resin may be heated to heat and the adhesive resin may be melted and bonded (see also 3e).

On the other hand, the above embodiment is an example in which a plurality of through holes (5) are drilled to inject synthetic resin solution (W) into each intaglio glyph part 2 of the metal or synthetic resin lower mold (3) as an example. Although described, as shown in the embodiment of FIG. 4, when the patterns of the intaglio glyphs 2 are in close proximity, one through hole 5 may be formed in the same size as the entire size of the intaglio glyphs 2, At this time, the installation water of the heating pump is formed so that the synthetic resin solution (W) is equally and properly filled in the intaglio glyphs 2, and thus, the desired label can be formed, and as shown in the embodiment of FIG. Even if the upper mold (4) is installed to reciprocate only the upper surface of each of the intaglio glyphs (2), the same effect as in the above embodiment can be achieved, as well as the intaglio glyphs (2) defined in this way. Only by reciprocating operation When the filler A is configured to fill the filling A, each penetrating hole 5 of the upper mold 4 is filled in each intaglio part 2 while only scratching the prescribed intaglio part 2. There is no phenomenon of mixing the synthetic resin solution (W), and each of the engraved glyphs (2) can be filled with a different color of filling (A) to form a multi-color label.

That is, through the heating pumps 9a, 9b, 9c, and 9d installed in each of the intaglio glyphs 2, the pigments of different colors are penetrated through the synthetic resin solution W of different colors. When the upper mold 4 starts to move to one side by the operation of the operation cylinder 6, the upper mold 4 Each perforated hole (5) scratches only the top surface of the intaglio glyph (2), so that each intaglio glyph (2) is filled with synthetic resin solution (W) of different colors. After filling the filling material (A) of different colors in the unit (2) and then applying heat while pressing the label substrate (B) as described above, and then cooling the label substrate (B), each intaglio pattern ( The multi-colored label was demolded with the filling material (A) of different colors that were filled in 2) attached to the labeling material (B). Will be able to mold.

As another embodiment of the present invention, the upper mold 4 and the upper mold 4 on the upper surface of the lower mold 3 made of metal or synthetic resin, and the synthetic resin by screen printing method on each intaglio portion 2 of the lower mold 3 are installed. Filling the mixed synthetic resin filler (A) in the intaglio pattern (2) by the method of filling the solution (W) and then attach the filler (A) to the label substrate (B) in the same manner as in the above embodiment, In the case of filling a synthetic resin filler (A) in each intaglio (2) of the lower mold (3) by the screen printing method as described above, in the case of a single color (1 degree color) A) can be filled, and in the case of the multi-colored color of 2 degrees or more, the filling material (A) of different colors is filled in the intaglio part 2 by repeating the screen printing by the number of chromaticity, and then the label material (B). ), The multicolor label It can be molded.

In accordance with the present invention, a suitable amount of a synthetic resin solution is formed by operating an air cylinder through each of the through-holes of an upper mold fixed to a lower mold on which an intaglio pattern such as a figure or a character is formed on a base. After supplying and filling mixed synthetic resin solution of 1 degree color or more than multi-colored color to each intaglio door with the heating pump to supply, scrape the upper surface of each intaglio door of lower mold by screen movement or by screen printing method. Filling each intaglio glyph of the lower mold with a filler of 1 degree to multi-colored synthetic resin, filling each intaglio glyph with a filling material on the intaglio glyph, placing the label base on it, and applying compression and simultaneous high frequency heat. After the filling filled in the heat-bonded to the label substrate, the lower mold is cooled to facilitate the demolding of each filling. It is possible to mass-produce a homogeneous label by the method of forming an embossed pattern on the ash, and in particular, the present invention applies the adhesive or adhesive to the back surface of the label substrate to which the filler is attached by screen printing or by applying the adhesive layer by the adhesive resin spraying method. In addition, the label can be easily used for label attachment, and when the label is selected from a label material, a transparent synthetic resin plate or a glass material, and an adhesive layer is formed on the back side, the decorative effect of the label can be further increased to satisfy the label's requirements. It is possible to provide a product with excellent decorative effect that can be satisfactorily satisfied.

Claims (2)

Drilling through holes (5) exposing the intaglio glyphs (2) to the lower mold (3) formed in the engraving or electrolytic corrosion indentation (2) and the upper mold (4) sliding in contact with Heating pumps 9a, 9b, 9c, and 9d for melting known synthetic resin materials are laid so that when the upper mold 4 is matched with the lower mold 3, the synthetic resin solution W passes through the holes ( 5) to supply the appropriate amount to the intaglio glyph (2), and then the operating cylinder (6) is operated to move the upper mold (4) to one side to fill the only in the intaglio glyph (2) After removing the residue, put the label material (b) on the upper surface of the lower mold (3) by the usual method, and the filling (A) filled in the intaglio pattern 2 by pressing and simultaneously applying high frequency heat to the label material (B). The molding method of the molded resin label made of a synthetic resin, characterized in that attached to. The piston rod 7 of the operation cylinder 6 has an upper mold 4 having rails 4 'and 4 "inserted into the rail grooves 3' and 3" on the upper surface of the lower mold 3. And advancing and operating the upper mold 4 so that the through holes 5 coincide with or separate from the intaglio glyphs 2 of the lower mold 3 by adhering to each other. Several heating pumps 9a, 9b, 9c installed on each outlet 9 'by an automatic metering valve 10 for supplying a predetermined amount of solution through the ball 5 to the intaglio pattern 2; (9d) is installed so as to interlock with the air cylinder (15a) (15b) (15c) (15d) by filling the synthetic resin solution (10) of the multi-colored color in each intaglio glyph part (2) Molding label molding machine made of synthetic resin.

Images