KR20100055547A - Multilayer printing mathode on uv forming layer - Google Patents

Abstract

PURPOSE: A multilayer printing method of a UV forming layer is provided to reduce process time and product production time by forming multi-layered forming layers with a UV mixed solution through a simple silk screen printing process. CONSTITUTION: Using a UV mixed solution(UVm), a silk screen printing of a required shape is operated on a UV forming layer(S100). A UV solution and additives are included in the UV mixed solution. In order that the UV solution does not blot to a pattern on the UV forming layer, the additives is used. In order to harden the formed UV mixed solution on the UV forming layer, a UV ray is irradiated in the UV mixed solution(S200). The processes are repeated.

Description

Multilayer printing method of UV forming layer

The present invention relates to a multi-layer printing method of a UV molded layer, and more particularly, a conventional spin to be widely used for forming various three-dimensional patterns through a keypad, a blind point on a keypad, a housing case of various electronic devices, an embossed half angle, and the like. A multi-layer printing method of a UV molded layer which can be widely used in various industrial fields by forming a UV mixed solution mixed with UV liquid and additives on a UV molded layer having patterns of various patterns such as shapes by silk screen printing. will be.

Recently, various products necessary for daily life such as various home appliances and daily necessities for rapid industrial development and life convenience have been developed and used. These various products are of course not only enhanced in their functionality, but also slimmer in consideration of portability and design, and accordingly, various technologies for slimming and improving the quality of products have been disclosed.

As technology for slimming the product and improving the quality of the product, a UV coating technology essential as a post-processing technology of the product is currently widely disclosed. The UV coating technology is widely used in many industrial fields because it can harden the UV solution on the surface of the product to improve wear resistance and scratch resistance of the product.

In addition, recently, as the slimming of the product is accelerated, it plays the largest role in slimming the product, for example, a mobile phone. Competition among companies to slim down mobile phones is intensifying. As a technology for this, a mobile phone key top is formed by using UV curing paint on one surface of transparent polyester (PET) or polycarbonate (PC) flat film fabric. The e-lamp sheet is printed on the lower part of the base film, and the keypad can be made slim by forming a silicon layer having an actuator on the lower part of the e-lamp sheet.

However, since the general slim keypad using the UV curing paint has no pattern, the key film has a disadvantage that it is not luxurious because the design of the product is flat, and the present UV coating technology is simply abrasion resistance and scratch resistance of the product. It was limited to castles.

Therefore, as a technology further developing the above-described UV coating technology, the UV mold forming layer is formed so that various patterns of patterns required on the surface of the product appear by using the UV solution to further improve the design of the product. Technology has been developed and widely used.

However, such a yubung forming layer formed with various patterns on the surface of the product is impossible to implement the intaglio pattern consisting of a single layer, it was virtually impossible to form another patterned yubung forming layer on the upper surface. That is, another UV layer is formed on the UV molding layer in which the pattern of the conventional pattern is formed, forming a shape that imparts functionality such as a blind point of a mobile phone, or forming a multilayer UV layer to form a new color by combining various colors. Implementation and three-dimensional patterns could not be expressed.

Here, for example, as described above, the projection of the mobile phone keypad, such as the blind point of the mobile phone, simply presses the keypad with a press mold to form a projection, and then forms a UV coating layer for durability and scratch resistance on the top thereof. If this is not possible, the user continues to use, the user is confirmed that the blind point by pressing the process of pressing the process of pressing the blind point formed by the action to restore the original state of the blind point causes a problem is lost. There is a situation.

Therefore, while forming a yub shaping layer that forms a specific pattern to perform the same role as the blind point of the keypad, currently a yub shaping layer is formed by forming a specific pattern on a single layer, blind point protruding by the press There is a problem that the functionality is lost to feel the same. In other words, in order to achieve the function of the blind point, which is implemented so that the blind feels the touch correctly and is convenient to use, the yub molding layer needs to be implemented in multiple layers.

As described above, however, when the yub forming layer is formed in multiple layers in the yub forming layer of a single layer, there is a problem that it is difficult to form a correct layer by spreading or flowing the yuv liquid between the intaglio pattern patterns of the yub forming layer.

In general, in the manufacture of keypads, the formation of blind spots is a process carried out in the final process, the formation of blind spots through the pressing process by the press mold and the formation of blind spots using the pattern of the uv forming layer is a product failure rate This is very high, leading to a unit cost loss of the final final process, there is a problem that results in a higher impact on the overall process loss due to such a final process loss.

Therefore, the present invention has been created to solve the problems described above, it is not spread even in the pattern pattern formed on the single layer of the mold forming layer, the UV mixing solution mixed with a UV solution and additives so that the desired shape can be implemented as it is By using the multi-layered UV molding layer can be formed by a simple work process, it is possible to shorten the process time and product production time, and to improve the functionality and decorative properties of the product and An object of the present invention is to provide a multi-layer printing method of a yub molding layer that can improve product quality.

In addition, the present invention is a multi-layer printing of the yub molding layer using a yub mixture solution is laminated in multiple layers to minimize the quality defects of the product in the final process step, and easy to modify according to the defect of the product to improve productivity. Another purpose is to provide a method.

Therefore, in the multi-layer printing method of the UV mold forming layer according to the present invention for solving the above object, the UV material is coated on one surface of the polyester (PET) or polycarbonate (PC) flat film fabric (10) In the UV molding layer 20 formed by curing the UV material to form a pattern 22 of various patterns required by irradiating UV light to the coated UV material, the UV liquid and the UV liquid are Using the UV mixed solution (UVm) mixed with additives for increasing the viscosity to increase the viscosity so as not to spread on the pattern 22 of the pattern formed on the molding layer 20 to the shape required on the UV molding layer 20 Silk screen printing step (S100) and; Irradiating ultraviolet rays to cure the UV mixture (UVm) formed on the UV molding layer 20 (S200); Repeatedly carrying out is characterized in that the UV mold forming layer (UVF1 ~ UVFn) is formed in a multilayer.

Here, the UV mixed solution (UVm) is 25 to 35% by weight of epoxy acrylate (EPOXY ACRYLATE RESIN) as the oligomer, 3 to 10% by weight of polyester acrylate (POLYESTER ACRYLATE RESIN), tripropylene glycol as a monomer 15-25% by weight of diacrylate (GDA; TRI PROPYLENE GLYCOL DI ACRYLATE), 10-20% by weight of hexane diol diacrylate (HDDA; 1.6 HEXAN DIOL DI ACRYLATE), trimeryl propane triacrylate (TMPTA; TRI METHYLOL) PROPANE TRI ACRYLATE) 5-15% by weight, 5-10% by weight of polyethylene glycol 400 diacrylate (PEG400DA; POLY ETHYLENE GLYCOL 400 DI ACRYLATE), 5-10% by weight photoinitiator, silicone acrylate 0.1 as additive It is characterized by being prepared by the addition of -1% by weight, 0.1-1% by weight of dimethyl polysiloxane.

On the other hand, each of the multi-layered UV molding layer (UVF1 ~ UVn) to be silkscreen printed by the UV mixed solution (UVm) is preferably 10mm or less in thickness, 90% or more in light transmittance, viscosity.

On the other hand, the UV mixed solution (UVm) is possible to implement the color required by the user is mixed with the two-component general ink, but differently laminated to the UV transmission layer (UVF1 ~ UVn) by the color of the light transmission According to the present invention, each of the UV molding layers (UVF1 to UVn) is preferably a color mixed with the outside, and the UV mixed solution (UVm) may be formed into an embossed half-square pattern by silkscreen printing.

The present invention is a simple silk-screen printing process using a UV mixed solution mixed with UV solution and additives, so that it does not spread even in the pattern pattern formed on the single layer UV molded layer, using the UV mixture mixed with UV solution and additives It is possible to form, thereby reducing the process time and product production time is an advantage.

In addition, by mixing the two-component general ink with the UV mixing solution, it is possible to implement different colors of each UV molding layer, and various patterns can be represented in each of the UV molding layer in the embossed half-angle state to express the three-dimensional pattern. There is an effect of improving the functionality and decoration of the product quality can be improved accordingly.

In addition, the present invention has the effect of minimizing the quality defects of the product in the final process step, such as by stacking the multi-layered yub shaping layer using a UV mixed solution, it is easy to modify according to the defect of the product productivity is improved.

Hereinafter, with reference to the accompanying drawings will be described in detail the configuration and operation of the multilayer printing method of the UV molded layer according to the present invention.

1 is a manufacturing process diagram of the multilayer printing method of the UV molded layer according to the present invention, Figure 2 is a cross-sectional view of the multilayer printing method of the UV molded layer according to the present invention.

As shown in the manufacturing process of Figure 1, the multilayer printing method of the UV molding layer according to the present invention is coated with a UV material on one surface of the polyester (PET) or polycarbonate (PC) flat film (fabric) film 10 And applying the multilayer UV molding layer (UVF1 to UVFn) on the UV molding layer 20 formed by curing the UV molding material so as to form a pattern 22 of various patterns required by irradiating UV light on the coated UV material. In order to be able to be laminated in the required shape of the user, to perform a silkscreen printing step (S100), UV irradiation step (S20) repeatedly to form a multi-layered UV mold release layer (UVF1 ~ UVFn).

The silk screen printing step (S100) is a UV-V liquid having excellent wear resistance, scratch resistance and slimness, and when the UV liquid is applied on the pattern 22 of the pattern formed on the UV-molded layer 20, Silk screen printing to the desired shape on the UV molding layer 20 using a UV mixed solution (UVm) mixed with additives to increase the viscosity of the UV solution so as not to flow or spread between the patterns (22). .

Here, the UV mixed solution (UVm) has a high viscosity, so that when the user realizes a desired shape, a single layer of UV may be printed in a desired shape without flowing or spreading between the patterns 22 of the pattern formed on the forming layer 20. The UV mixture (UVm) is 25 to 35% by weight of epoxy acrylate (EPOXY ACRYLATE RESIN) as an oligomer, 3 to 10% by weight of polyester acrylate (POLYESTER ACRYLATE RESIN), tripropylene glycol diacryl as a monomer 15-25% by weight (GDA; TRI PROPYLENE GLYCOL DI ACRYLATE), 10-20% by weight of hexane diol diacrylate (HDDA; 1.6 HEXAN DIOL DI ACRYLATE), trimetholol propane triacrylate (TMPTA; TRI METHYLOL PROPANE TRI) ACRYLATE) 5-15% by weight, 5-10% by weight of polyethylene glycol 400 diacrylate (PEG400DA; POLY ETHYLENE GLYCOL 400 DI ACRYLATE), 5-10% by weight of photo initiator (silicone) as an additive Acrylate, 0.1-1% by weight of dimethyl polysiloxane is prepared by the addition of 0.1 to 1% by weight.

Furthermore, each of the multi-layered UV molding layers UVF1 to UVn silk-printed by the UV mixed solution UVm has a thickness of 10 mm or less, a light transmittance of 90% or more, a viscosity?, And a single layer by viscosity? It is possible to obtain the required shape without the UV mixed solution (UVm) flowing or spreading between the patterns 22 of the pattern formed on the eutectic forming layer 20 of.

The UV irradiation step (S200) is a UV-mixed solution (UVm) of the viscosity? As described above is printed in a pattern of the shape required on the pattern pattern 22 on the single-layered eutectic forming layer 20 by silk screen printing. Then, ultraviolet rays are irradiated to cure the molded UV mixture (UVm).

That is, when the ultraviolet ray is irradiated to the UV mixed solution (UVm) printed on the single layered UV molding layer 20, the UV is reacted with the photoinitiator of the UV mixed solution (UVm) and cured and laminated in the required shape. By repeatedly performing the printing step and the ultraviolet irradiation step, as shown in Figure 2, it is possible to form a multi-layered UV molding layer (UVF1 ~ UVFn) with the required pattern is formed.

The multilayer printing method of the UV molded layer of the present invention as described above will be described in detail by way of examples.

Looking at the embodiment for forming the blind point formed on the keypad of the mobile phone through the multi-layer printing method of the UV molding layer of the present invention described above, the post-processed UV is not processed by pressing when forming the blind point on the conventional keypad Blind spots are printed on the keypad by silk screen printing using the UV mixture according to the present invention (UVm) on the coating layer.

Next, the ultraviolet-ray molding layer UVF1 which is the blind spot is formed by irradiating and hardening an ultraviolet-ray to the keypad with which the blind spot was printed by the initial UV mixed liquid UVm. Then, once again, as described above, the UV mixed solution UVm is laminated on the UV molding layer UVF1, which is blind spot, by silkscreen printing to irradiate and harden UV to form the UV molding layer (UVF2). In other words, a blind spot of a height sufficient for a blind person to feel the hand is molded on the keypad.

On the other hand, the two-component general ink is mixed with the UV mixed solution (UVm) is formed to enable the implementation of the color required by the user. For example, the first UV mixed solution (UVm) is mixed with a blue two-component general ink, and the blue UV mixed solution (UVm) is silk-screen printed onto a single layered eutectic forming layer (20). A color uve shaped layer (UVF1) is formed.

Next, the red two-component general ink is mixed with the UV mixed solution (UVm), and the red UV mixed solution (UVm) is silk-screen printed on the blue UV molded layer (UVF3), and then irradiated with UV rays to cure the red color. By forming the UV mold forming layer (UVF4), not only the color can be realized through the two-component general ink of various colors, but also the blue UV mold forming layer (UVF3) and the red UV mold forming layer (UVF4) are stacked in different colors. Accordingly, the colors according to the light transmittance of each of the UV molding layers (UVF3, UVF4) are expressed as a color mixed with the outside to realize various colors.

Furthermore, the color is changed according to the specific design required by the user, and the UV mixed solution (UVm) is formed by embossing each of the UV shaped layers (UVF1 to UVFn) by the silkscreen printing, thereby creating another aesthetic sense. It is obvious that the UV molded layer which can be expressed can be formed.

On the other hand, in the detailed description of the present invention has been described with respect to specific embodiments, to those skilled in the art that various modifications are possible without departing from the scope of the invention, such modifications are claimed It is within the scope of the description.

1 is a manufacturing process of the multilayer printing method of the UV molded layer according to the present invention.

2 is a cross-sectional view of the multilayer printing method of the UV molded layer according to the present invention.

* Description of the major symbols in the drawings *

10: fabric 20: single layer uv forming layer

22: pattern UVm: UV mixture

UVF1-UVFn: Multi-layered UV Molding Layer

Claims (5)

A UV material is coated on one surface of a polyester (PET) or polycarbonate (PC) flat film fabric 10, and various patterns of patterns 22 are formed by irradiating UV light on the applied UV material. In the yuv forming layer 20 formed by curing the yuv material so as to UV molding using a UV mixed solution (UVm) mixed with a UV liquid and an additive showing an adhesive force to increase the viscosity so that the UV liquid does not spread on the pattern 22 of the pattern formed on the UV forming layer 20 Silk screen printing in the required shape on the layer (20) (S100); Irradiating ultraviolet rays to cure the UV mixture (UVm) formed on the UV molding layer 20 (S200); Repeatedly performing a multilayer forming method of the UV molding layer (UVF1 ~ UVFn) is formed in a multilayer. The method of claim 1, The UV mixture (UVm) is 25 to 35% by weight of epoxy acrylate (EPOXY ACRYLATE RESIN) as an oligomer, 3 to 10% by weight of polyester acrylate (POLYESTER ACRYLATE RESIN), tripropylene glycol diacryl as a monomer 15-25% by weight (GDA; TRI PROPYLENE GLYCOL DI ACRYLATE), 10-20% by weight of hexane diol diacrylate (HDDA; 1.6 HEXAN DIOL DI ACRYLATE), trimetholol propane triacrylate (TMPTA; TRI METHYLOL PROPANE TRI) ACRYLATE) 5-15% by weight, 5-10% by weight of polyethylene glycol 400 diacrylate (PEG400DA; POLY ETHYLENE GLYCOL 400 DI ACRYLATE), 5-10% by weight photoinitiator, silicone acrylate 0.1-1 as additive It is prepared by adding 0.1% by weight to 1% by weight of dimethyl polysiloxane, multilayer printing method of the UV molded layer. The method of claim 1, The multi-layered UV molding layer (UVF1 ~ UVn) of the multi-layer silkscreen printed by the UV mixed solution (UVm) is a thickness of 10mm or less, light transmittance of 90% or more. The method of claim 1, The UV mixed solution (UVm) is a two-component general ink is mixed to realize the color required by the user, As a result of stacking different colors of the UV molding layers UVF1 to UVn, the UV mixing is performed by combining colors of the UV molding layers UVF1 to UVn according to light transmission. Multilayer printing method of layers. The method of claim 1, The UV mixed solution (UVm) is a multi-layer printing method of the UV molded layer, characterized in that the embossed half-height pattern by silkscreen printing.

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