KR20160016156A - Resin molded product bonded to transparent glass, watch, liquid crystal display, aircraft body and method of manufacturing thereof - Google Patents

Abstract

Provided are a resin molded article fused with transparent glass, a watch, a liquid crystal display device, an aircraft body, and a production method for the resin molded article. More specifically, the present invention relates to a technology to fuse the transparent glass with a resin molded article with higher folding strength. According to an embodiment of the present invention, the production method for the resin molded article fused with the transparent glass comprises the following steps: irradiating at least one surface of the transparent glass with laser so as to form a molding pattern which includes one or more groove parts; inserting the transparent glass into a mold; and injecting a resin into the mold to finish the resin molded article and further injecting the resin into the groove part so that the transparent glass can be fused with the resin molded article.

Description

TECHNICAL FIELD [0001] The present invention relates to a resin molded article to which transparent glass is bonded, a watch, a liquid crystal display, an aircraft body, and a method of manufacturing the same. BACKGROUND OF THE INVENTION [0002]

Embodiments of the present invention relate to a resin molded product to which a transparent glass is bonded, a watch, a liquid crystal display, an aircraft body, and a method of manufacturing the same. More particularly, the present invention relates to a resin molded product to which a transparent glass is bonded with a higher bonding strength, A display device, an aircraft body, and a method of manufacturing the same.

Glass-resin composites are widely used as structural parts for various electronic devices or industrial devices. In such a glass-resin composite, it is general that bonding of glass and resin is performed by an adhesive. Therefore, in the process of manufacturing a glass-resin composite, a process of bonding a glass and a resin by an adhesive is added, thereby increasing the manufacturing cost of the glass-resin composite. However, in such a joining step, when the application amount of the adhesive is insufficient, the bonding force is decreased, and when the application amount of the adhesive is excessive, excessive adhesive flows out to contaminate the product, and therefore, a considerable precise control on the application amount of the adhesive is required. Further, since the adhesive is applied to the glass surface as it is, when the glass-resin composite is subjected to an external force equal to or greater than a certain size, the glass-resin bonding can be easily broken.

Korean Patent Publication No. 2009-0111310 (Oct. 26, 2009)

Embodiments of the present invention relate to a technique for allowing a transparent glass to be bonded to a resin molded article at a higher bonding strength.

According to an exemplary embodiment of the present invention, there is provided a method of manufacturing a resin molded article to which a transparent glass is bonded, the method comprising: forming a molding pattern on the at least one surface of the transparent glass by laser irradiation to form at least one groove; Inserting the transparent glass into a mold; And a step in which the resin is injected into the mold to complete the resin molded product and the resin is injected into the groove so that the transparent glass is bonded to the resin molded product. do.

At least one of the forming position of the forming pattern, the shape of the forming pattern, and the size of the forming pattern may be determined by adjusting at least one of the focus position and the focus size of the laser.

The step of forming the forming pattern may be such that the groove portion is formed to extend from one surface of the transparent glass to the inside of the transparent glass.

In the step of forming the forming pattern, the forming pattern may be formed by irradiating at least one surface of the transparent glass with a laser having a wavelength of 532 nm or a wavelength of 0 to 350 nm.

In the step of forming the forming pattern, a plurality of the grooves may be regularly and repeatedly formed on the at least one surface of the transparent glass with the same size and shape.

The step of forming the forming pattern may be such that the plurality of grooves have different sizes and shapes on at least one surface of the transparent glass.

The resin may be a resin having a color.

The transparent glass may have a multi-layer structure.

A method of manufacturing a resin molded article to which the transparent glass is bonded comprises the steps of: after the step of forming the forming pattern, a metal powder is provided on at least a part of the groove portion; And melting the metal powder by a laser irradiation method or a plasma discharge method.

According to another exemplary embodiment of the present invention, there is provided a resin molded article to which transparent glass produced by the above-described method is bonded.

According to another exemplary embodiment of the present invention, a clock manufactured by the above-described method is provided.

According to another exemplary embodiment of the present invention, a liquid crystal display device manufactured by the above-described method is provided.

According to another exemplary embodiment of the present invention, an aircraft fuselage manufactured by the above-described method is provided.

According to the embodiments of the present invention, since the resin is injected into the groove of the molding pattern, the transparent glass can be bonded to the resin molded article with higher bonding strength. In this case, it is necessary to use a separate adhesive for bonding the transparent glass and the resin molded article There is no.

Further, according to the embodiments of the present invention, since the bonding strength between the transparent glass and the resin molded article can be increased only by the molding pattern formed by laser irradiation without using an adhesive, the transparent glass having various sizes and shapes The joining of the resin molded article can be facilitated. That is, the transparent glass and the resin molded article can be easily bonded even at a position difficult to be bonded with an adhesive.

In addition, according to the embodiments of the present invention, the process of cleaning or cleaning (glass cleaning or glass washing) of the transparent glass according to the use of the adhesive is unnecessary. As a result, the manufacturing process of the resin molded article is simplified and the manufacturing cost can be reduced.

Further, according to the embodiments of the present invention, transparent glass can be bonded to the resin molded article through an eco-friendly process which does not generate a solvent, wastewater, waste, or the like unlike bonding by chemical liquid treatment.

Also, according to embodiments of the present invention, a resin or a metal powder having a color can be used to invite a user's sense of beauty or to easily transmit specific information to a user.

1 is a view for explaining a method of manufacturing a resin molded article to which a transparent glass is bonded according to an embodiment of the present invention
Figure 2 is an illustration of a forming pattern according to one embodiment of the present invention.
3 is a view showing a forming position of a forming pattern according to the focal position of the laser;
4 is a view for explaining a process in which a resin is injected into the groove portion of FIG. 2 to bond the transparent glass to the resin molded product;
5 is a view showing a shape in which a transparent glass according to an embodiment of the present invention has a multilayer structure
6 is a top view of the resin molded article according to one embodiment of the present invention
7 is a view showing a clock manufactured by the method shown in Figs. 1 to 6
8 is a view showing a liquid crystal display device manufactured by the method shown in Figs. 1 to 6
9 is a view showing an aircraft body manufactured by the method shown in Figs. 1 to 6

While the present invention has been described in connection with certain exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and similarities. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

In the following description, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The following terms are defined in consideration of the functions of the present invention, and may be changed according to the intention or custom of the user, the operator, and the like. Therefore, the definition should be based on the contents throughout this specification.

The technical idea of the present invention is determined by the claims, and the following embodiments are merely a means for efficiently describing the technical idea of the present invention to a person having ordinary skill in the art to which the present invention belongs.

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. However, this is an exemplary embodiment only and the present invention is not limited thereto.

1 is a view for explaining a method of manufacturing a resin molded product 110 to which a transparent glass is bonded according to an embodiment of the present invention.

First, referring to FIG. 1 (a), a transparent glass 102 to be bonded to the resin molded product 110 is provided. Here, the transparent glass 102 is a glass having a transmittance of greater than 0% and less than 100%, such as ceramic, sapphire, optical crystal or other hard inorganic material, Is used in a broad sense including. Further, the resin molded product 110 can be formed by an injection molding process, which will be described later, as an article to be manufactured. The resin molded product 110 may constitute at least a part of, for example, a clock (not shown), a liquid crystal display (not shown), an aircraft body (not shown)

Referring to FIG. 1 (b), a molding pattern 104 is formed on at least one surface of the transparent glass 102. The molding pattern 104 is a pattern formed on at least one surface of the transparent glass 102 so that the transparent glass 102 is bonded to the resin molded product 110 with a high bonding strength and includes at least one groove (not shown) can do. The forming pattern 104 may be formed by laser irradiation (laser abrasion, etc.) on at least one surface of the transparent glass 102. Here, the position at which the molding pattern 104 is formed may be a bonding surface on which the transparent glass 102 is bonded to the resin molded product 110. The forming pattern 104 may be formed on all or a part of the bonding surface of the transparent glass 102 and the resin molded product 110. [

2 is an exemplary view of a forming pattern 104 according to an embodiment of the present invention. As shown in Fig. 2, the forming pattern 104 may include one or more grooves 104a.

First, referring to FIG. 2A, at least one surface of the transparent glass 102 may be regularly repeatedly formed with a plurality of grooves 104a having the same size and shape. As described above, the plurality of trenches 104a can be formed by a laser irradiation technique such as laser etching. The diameter of the groove 104a formed on one surface of the transparent glass 102 may be, for example, 100 nm to 100 占 퐉 and the depth of the groove 104a may be 2 to 5 times the diameter of the groove 104a. It can be doubled. The groove portion 104a may be formed to extend from the one surface of the transparent glass 102 to the inside of the transparent glass 102. [ In addition, each of the plurality of trenches 104a may be spaced apart from each other with a predetermined gap therebetween. Although the diameter of the groove 104a has been shown to decrease from one surface of the transparent glass 102 toward the inside of the transparent glass 102, this is only an example, and the size and shape of the groove 104a But is not limited thereto.

Also, referring to FIG. 2B, a plurality of grooves 104a may be formed on at least one surface of the transparent glass 102 so as to have different sizes and shapes. Here, the diameter of the groove 104a may be formed to be kept constant from one surface of the transparent glass 102 toward the inside, unlike the case of FIG. 2 (a). In addition, each of the plurality of grooves 104a may be formed to have different depths, and the distance between the grooves 104a may not be constant. That is, the molding pattern 104 formed on at least one surface of the transparent glass 102 may be formed in an irregular shape.

The formation position of the molding pattern 104 (or the groove 104a), the shape of the molding pattern 104 (or the groove 104a) and the size of the molding pattern 104 (or the groove 104a) And at least one of the focal position and the focal size of the lens may be adjusted.

First, when the focal position of the laser is changed, the forming position of the forming pattern 104 may be changed. In particular, since the transparent glass 102 according to an embodiment of the present invention has a transparent surface, unlike a metal or the like having an opaque surface, Can be formed. This will be described later with reference to FIG.

Further, if the focus size of the laser is changed, the shape of the molding pattern 104 and the size of the molding pattern 104 may be changed. For example, if the focal point size of the laser is increased, the diameter of the groove 104a may become larger. In addition, by changing the focus size of the laser to be larger or smaller, the shape (circular shape, line shape, bending shape, etc.) of the groove portion 104a can be variously changed. That is, according to the embodiments of the present invention, by controlling at least one of the focus position and the focus size of the laser irradiated on at least one surface of the transparent glass 102, the formation position of the molding pattern 104, And the size of the molding pattern 104 can be freely changed.

On the other hand, the wavelength of the laser irradiated on at least one surface of the transparent glass 102 may be, for example, 532 nm or greater than 0 and less than 350 nm. Generally, the laser absorption rate in a target such as metal, glass, etc. may vary depending on the laser wavelength. That is, the shorter the wavelength of the irradiated laser, the higher the absorption rate of the laser in the object. If a forming pattern 104 according to an embodiment of the present invention is formed on a metal surface, a laser with a wavelength of 1064 nm must be irradiated, which requires a high pulse energy. However, since the transparent glass 102 according to the embodiment of the present invention has a transmittance of a predetermined size or more, it is not necessary to irradiate a long wavelength laser to form the above-described forming pattern 104. [ It is sufficient if a laser of 532 nm wavelength or a laser of wavelength greater than 0 and less than 350 nm is irradiated to form the molding pattern 104 on one surface of the transparent glass 102. Accordingly, in the case of the transparent glass 102, a lower pulse energy is required compared to the metal. Of course, it is natural that a laser with a wavelength of 1064 nm can be used here.

3 is a view showing a forming position of the forming pattern 104 according to the focal position of the laser. 3 (a), the transparent glass 102 according to an embodiment of the present invention may include a plurality of surfaces a to g. The portions a, b, f and g of the surfaces a to g are exposed to the outside while the other portions c, d and e are formed in a U-shape forming a predetermined space inside the transparent glass 102 . If these surfaces a to g are made of an opaque material, formation of the molding pattern 104 on the surfaces c to e can be a very difficult task. In this case, the surfaces c and e are not visible from the outside, and the forming pattern 104 may be more difficult to form. However, since the transparent glass 102 according to an embodiment of the present invention is made of a transparent material, the laser can be easily irradiated from the upper side of the surface a toward the surface c.

At this time, the forming position of the forming pattern 104 may vary depending on the focal position of the laser. For example, when the focus of the laser is located on the surface c, the forming pattern 104 is formed on the surface c, and when the focus of the laser is located on the surface d, the forming pattern 104 may be formed on the surface d. The resin 108 may be injected into the surfaces c to e as shown in FIG. 3 (b), and the surface of the transparent glass 102 (c to c) may be injected into the resin molded product 110 formed through the above- e) can be bonded.

According to the embodiments of the present invention, the forming position of the forming pattern 104 formed on at least one surface of the transparent glass 102 can be adjusted according to the focal position of the laser. Particularly, according to the embodiments of the present invention, the molding pattern 104 can be easily formed on the surface of the transparent glass 102 having a three-dimensional shape, so that the bonding of the transparent glass 102 and the resin molded product 110 Can be made more firm.

1, the transparent glass 102 having the molding pattern 104 formed on one surface thereof can be inserted into the mold 106 for injection molding as shown in Fig. 1 (c). Here, the mold 106 is an apparatus for injection molding the resin molded product 110, and the shape thereof may be changed depending on the type of the resin molded product 110 to be manufactured.

When the transparent glass 102 is inserted into the mold 106, a resin injection space S is formed. The resin 108 is injected into the resin injection space S so that the resin molded product 110 can be injection-molded. The resin 108 may be injected into the resin injection space S through a nozzle (not shown) or the like, but the collection injection means is not limited thereto. On the other hand, the resin 108 injected into the resin injection space S may be, for example, a thermoplastic resin.

When the resin 108 is injected into the resin injection space S, a part of the injected resin 108 constitutes part of the outer surface of the resin molded article 110 and the other part thereof forms the groove part 104a of the molding pattern 104, . The resin 108 injected into the groove portion 104a is hardened through the cooling process and the transparent glass 102 is bonded to the resin molded product 110 in this process. This will be described later in detail with reference to FIG.

Next, referring to FIG. 1 (d), after the resin 108 injected into the resin injection space S is completely hardened, the mold 106 can be removed to complete the resin molded product 110. The finished resin molded product 110 can constitute at least a part of a clock, a liquid crystal display (LCD), a body of an aircraft, and the like.

4 is a view for explaining a process in which the resin 108 is injected into the groove 104a of FIG. 2 and the transparent glass 102 is bonded to the resin molded product 110. FIG. 4, a part of the resin 108 injected into the resin injection space S is injected into the groove portion 104a of the molding pattern 104. As shown in Fig. The resin 108 injected into the groove portion 104a is hardened by the cooling process and the transparent glass 102 is bonded to the resin molded product 110 in this process. As described above, the groove portion 104a can be formed to extend inward of the transparent glass 102 on one surface of the transparent glass 102. [ Thus, when the resin 108 injected into the resin injection space S is hardened by the cooling process, the resin 108 hardened in the surface of the transparent glass 102 and in the groove 104a passes through the transparent glass 102 The resin molded product 110 can be bonded in multiple directions. That is, the transparent glass 102 can be firmly bonded to the resin molded product 110 by the at least one groove portion 104a. The bonding strength between the transparent glass 102 and the resin molded product 110 can be further increased as the number of the groove portions 104a is increased or the shape of the groove portion 104a is more complicated.

According to the embodiments of the present invention, the resin 108 is injected into the groove portion 104a of the molding pattern 104, so that the transparent glass 102 can be bonded to the resin molded product 110 with higher bonding strength. In this case, It is not necessary to use a separate adhesive for bonding the transparent glass 102 and the resin molded product 110. [ Since the bonding strength between the transparent glass 102 and the resin molded product 110 can be increased only by the molding pattern 104 formed by laser irradiation without using a separate adhesive agent, 102 and the resin molded product 110 can be easily joined. That is, the transparent glass 102 and the resin molded product 110 can be easily bonded even in a position where it is difficult to bond them with an adhesive. Further, according to the embodiments of the present invention, the process of cleaning or cleaning (glass cleaning or glass washing) the transparent glass 102 according to the use of the adhesive is unnecessary.

5 is a view showing a shape in which a transparent glass 102 according to an embodiment of the present invention has a multilayer structure.

First, referring to FIG. 5A, a plurality of transparent glasses 102-1 and 102-2 may be provided. A molding pattern 104 may be formed on at least one surface of the plurality of transparent glasses 102-1 and 102-2. At this time, the molding pattern 104 may be formed only on one surface of the first transparent glass 102-1 and the second transparent glass 102-2, and the first transparent glass 102-1 and the second transparent glass 102-2 may be formed. The molding pattern 104 may be formed on one surface of each of the transparent glasses 102-2. Here, it is assumed that the forming pattern 104 is formed on the lower surface of the first transparent glass 102-1 and the upper surface of the second transparent glass 102-2, respectively.

Referring to FIG. 5B, a plurality of transparent glasses 102-1 and 102-2 are inserted into a mold (not shown), and the molding pattern 104 of the first transparent glass 102-1 and the second A resin injection space S is formed between the molding patterns 104 of the transparent glass 102-2. Thereafter, resin (not shown) is injected into the resin injection space S, whereby the resin molded product 110 can be injection-molded. At this time, the resin molded article 110 may be formed by sequentially laminating the first transparent glass 102-1, the resin, and the second transparent glass 102-2. The molding pattern 104 can function so that the transparent glass 102 is bonded to the resin molded product 110 and can be formed to have a specific shape so that the user can feel aesthetics. In addition, the forming pattern 104 may consist of a combination of specific characters or phrases to provide specific information to the user.

In addition, a color resin may be injected into the resin injection space S. The resin injected into the resin injection space S may be made of, for example, a specific color such as red, blue, yellow, or a combination thereof. Accordingly, the molding pattern 104 located inside the finished resin molded product 110 has a specific color, which causes the user to feel aesthetic sense or to easily transmit specific information to the user.

In addition, a metal powder (not shown) may be provided on at least a part of the groove portion 104a. Thereafter, the metal powder can be melted and sintered by a laser irradiation method or a plasma discharge method. The metal powder provided on at least a part of the groove portion 104a can be sintered to achieve a specific shape. The sintering process of the metal powder may be performed after the injection molding of the resin molded product 110, but before the injection molding of the resin molded product 110. Through such a process, the resin molded article 110 may be formed in the form of a transparent glass 102, a resin, and a metal stacked in this order. The resin molded product 110 may also be formed by sequentially laminating the first transparent glass 102-1, the resin, the metal, and the second transparent glass 102-2.

That is, according to embodiments of the present invention, a resin or a metal powder having a color may be used to invite a user's sense of beauty or to easily transmit specific information to a user.

Further, the forming pattern 104 according to embodiments of the present invention may be formed on all of the specific surface of the transparent glass 102, thereby preventing the transparent glass 102 from being seen by the user. For example, the molding pattern 104 may be formed on one surface of the glass substrate (here, the first transparent glass 102-1) during LCD fabrication to seal the glass substrate in a hermetic manner.

6 is a top view of the resin molded product 110 according to one embodiment of the present invention. As shown in Fig. 6, the transparent glass 102 is firmly bonded to the resin molded product 110. Fig. In addition, the molding pattern 104 may be located inside the resin molded product 110. The forming pattern 104 may be formed of a specific shape or a combination of specific characters and phrases. As described above, the resin injected into the groove portion 104a of the molding pattern 104 may be a resin having a color, and at least a part of the groove portion 104a may be provided with a metal powder to be melt-sintered. Accordingly, the user can feel a sense of esthetics by seeing the shaping pattern 104 or can easily acquire specific information therefrom.

FIGS. 7 to 9 are schematic views of a watch 200, a liquid crystal display 300, and an aircraft body 400 manufactured by the method shown in FIGS. 1 to 6. The transparent glass 102 can be firmly bonded to the clock 200, the liquid crystal display 300, and the aircraft body 400 by the above-described method. The transparent glass 102 of the watch 200 functions as a cover surrounding the hour and minute hands from above and the transparent glass 102 of the liquid crystal display 300 functions as a display screen, The glass 102 can function as a window.

A separate adhesive is not required for bonding the transparent glass 102 to these resin molded articles. As a result, the manufacturing process of the resin molded article can be simplified and the manufacturing cost can be reduced. Further, the molding pattern 104 in the resin molded article can simultaneously achieve the effects of the design aspect and the information transfer effect.

Here, the clock 200, the liquid crystal display 300 and the aircraft body 400 are described as an example of the resin molded product 110, but this is only an example and the resin molded product 110 is limited to this embodiment no. The resin molded product 110 is applicable to various fields such as a television, a wearable device for sports, and the like.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation, I will understand. Therefore, the scope of the present invention should not be limited to the above-described embodiments, but should be determined by equivalents to the appended claims, as well as the appended claims.

102: Clear glass
102-1: First transparent glass
102-2: Second transparent glass
104: forming pattern
104a:
106: Mold
108: Resin
110: Resin molding product
200: Clock
300: liquid crystal display
400: aircraft body

Claims (13)

A method for producing a resin molded article in which a transparent glass is bonded,
Wherein at least one surface of the transparent glass is irradiated with a laser to form a forming pattern including at least one groove portion;
Inserting the transparent glass into a mold; And
Wherein the resin is injected into the mold to complete the resin molded product and the resin is injected into the groove so that the transparent glass is bonded to the resin molded product.
The method according to claim 1,
Wherein the step of forming the shaping pattern comprises the step of adjusting at least one of the focal position and the focus size of the laser so that at least one of the formation position of the shaping pattern, Wherein the step (c)
The method according to claim 1,
Wherein the step of forming the molding pattern comprises joining the transparent glass, wherein the groove portion is extended from one surface of the transparent glass to the inside of the transparent glass.
The method according to claim 1,
Wherein the forming pattern is formed by bonding a transparent glass to at least one surface of the transparent glass, wherein the forming pattern is formed by irradiating a laser having a wavelength of 532 nm or more, and a wavelength of 350 nm or less.
The method according to claim 1,
Wherein the step of forming the molding pattern is such that a plurality of the grooves are regularly and repeatedly formed at the same size and shape on at least one surface of the transparent glass.
The method according to claim 1,
Wherein the step of forming the forming pattern is such that a plurality of the grooves are formed to have different sizes and shapes on at least one surface of the transparent glass.
The method according to claim 1,
Wherein the resin is a resin having a color, and the transparent glass is bonded.
The method according to claim 1,
Wherein said transparent glass has a multilayer structure and is bonded to a transparent glass.
The method according to claim 1,
After the forming pattern is formed,
Providing a metal powder on at least a portion of the groove; And
Wherein the metal powder is melted by a laser irradiation method or a plasma discharge method.
A resin molded article produced by the method according to any one of claims 1 to 9, to which transparent glass is bonded.
A watch produced by the method according to any one of claims 1 to 9.
A liquid crystal display device manufactured by the method according to any one of claims 1 to 9.
A fuselage of an aircraft manufactured by the method of any one of claims 1 to 9.

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