KR101718780B1 - Laminated glass and method for manufacturing the same - Google Patents

Abstract

The present invention relates to laminated glass and a method for manufacturing the same, and more specifically, to laminated glass and a method for manufacturing the same, in which the glass has improved mechanical hardness and thus excellent durability that prevents the glass from being easily broken by external stress, and has improved decorative and aesthetic properties resulting from decoration of the outer appearance thereof, and has improved stability that prevents the glass fragments from being scattered when broken by external stress. The laminated glass of the present invention is formed by laminating and bonding the following between first and second glass plates, in this order: first and second PVB films; an iron mesh; and third and fourth PVB films. Therefore, the present invention provides a process which is relatively simple and enables more convenient mass-production compared to mesh-interposed laminated glasses manufactured according to conventional techniques. Moreover, the present invention serves to improve the durability of the glass by improving the mechanical hardness, prevent the glass fragments from being scattered when broken by impact, and provide decorative and aesthetic properties by decorating the outer appearance of the glass, and thus provides both product reliability and improved aesthetic properties.

Description

TECHNICAL FIELD [0001] The present invention relates to a laminated glass,

The present invention relates to a bonded glass and a method of manufacturing the same. More particularly, the present invention relates to a bonded glass and a method of manufacturing the same. More particularly, the present invention relates to a bonded glass, And a method for producing the same.

Generally, a laminated glass is laminated with a resin layer, usually laminated polyvinyl butyrate (PVB) (hereinafter referred to as PVB (polyvinyl butyral) film) between two or more glass plates to prevent glass fragments from being scattered when an external force acts on the glass, Film) as an interlayer, and is used for a front glass of an automobile and a glass window of a building.

Such a spliced glass can prevent a part of the glass fragments from being scattered by the interlayer made of the laminated PVB film interposed between the glass plates when the spliced glass is broken by the impact, but it has a limitation in improving the mechanical strength, Not only is it broken, but also has a limitation in completely blocking the scattering of the glass fragments even in case of breakage.

Thus, a mesh-bonded glass has been proposed to overcome the limit of mechanical strength and to completely block scattering of glass fragments. The mesh-bonded glass is a safety glass having a metallic net interposed between the plate glasses rather than a resin layer, which is advantageous in that the mechanical strength is improved as compared with the bonded glass having the resin layer interposed therebetween, and scattering of the glass debris upon breakage is prevented.

Such a mesh-bonded glass is usually manufactured by a method in which a glass liquid is formed by a roller and a metal mesh is inserted into the glass liquid to perform compression molding. Thus, before the glass liquid in the liquid state is solidified, The manufacturing cost is increased due to the necessity of high technology because it is manufactured by inserting it. In fact, most of the mesh-bonded glass is manufactured in Japan and imported into the domestic market.

In this way, the mesh-bonded glass has excellent safety but is difficult to manufacture due to difficulty in manufacturing and high price of the product, so it is difficult to install it from the viewpoint of price. Recently, the film-shaped product is attached to the glass to prevent the glass fragments from splashing And an example thereof has been proposed in Korean Patent No. 10-1122530 (registered on Feb. 24, 2012).

However, as in Korean Patent No. 10-1122530, a glass safety film in the form of a film can be directly attached to a conventional glass window without being manufactured through a special process as in the case of a conventional manufacturing process of a glass ingot bonded glass, In addition, it can provide economical efficiency, but it has a disadvantage in that the safety is lower than that of the conventional mesh-bonded glass.

KR 10-1122530 B1, 2012. 02. 24. KR 10-0434588 B1, May 25, 2004. JP 10-2004-359523 A, Dec. 09, 2004.

Accordingly, the present invention has been proposed in order to solve the problems of the prior art, and it is an object of the present invention to provide a manufacturing method of a glass- The present invention is intended to provide a bonded glass which can effectively prevent the scattering of glass fragments and at the same time provide an excellent appearance and which is excellent in decorative property and aesthetic sense, thereby achieving both stability and design.

According to one aspect of the present invention, there is provided a plasma display panel comprising first and second glass plates; A wire mesh interposed between the first and second glass plates; First and second PVB films bonded between the first glass plate and the wire netting; And third and fourth PVB films bonded between the wire mesh and the second glass plate, wherein the first to fourth PVB films each have a thickness of 0.35 mm to 0.70 mm. do.

Preferably, at least one of the first to fourth PVB films has a hue.

Preferably, at least one of the first and second glass plates is subjected to silk print processing with various patterns, shapes, or advertisement text.

Preferably, at least one of the first and second PVB films, between the third and fourth PVB films, between the first glass plate and the first PVB film, or between the second glass plate and the fourth PVB film And a flame retardant film is further disposed in one area, wherein the flame retardant film has a plurality of holes vertically penetrating therethrough.

According to still another aspect of the present invention, there is provided a method of manufacturing a semiconductor device, comprising the steps of: (a) preparing first and second glass plates, a wire netting, and first to fourth PVB films; (b) forming a sandwich structure by sequentially laminating the first and second PVB films, the wire netting, the third and fourth PVB films between the first and second glass plates; (c) introducing the sandwich structure into a preheating furnace and thermally bonding at a temperature of 120 ° C to 160 ° C; And (d) heating and thermally bonding the sandwich structure at a pressure of 10 kg / cm 2 to 14 kg / cm 2 at a temperature of 140 ° C to 160 ° C for 5 hours to 7 hours by introducing the sandwich structure into a main pressure furnace Of the glass transition point of the glass transition point.

Preferably, the step (a) includes a step of silk-printing a variety of patterns, shapes or advertisement text on at least one of the first and second glass plates.

As described above, according to the present invention, by providing the laminated glass in which the first and second PVB films, the wire netting, the third and the fourth PVB films are successively laminated between the first and second glass plates, , It is possible to mass-produce the glass at a low cost, improve the mechanical strength and improve the durability, effectively prevent scattering of the glass fragments when the glass is broken by the impact, and at the same time, It is excellent in decorative and aesthetic sense, and can provide stability and design at the same time.

1 is a perspective view showing a laminated glass according to an embodiment of the present invention.
Fig. 2 is an exploded perspective view of the bonded glass shown in Fig. 1; Fig.
3 is a cross-sectional view along the II 'perforation line shown in FIG. 1;
4 is a process flow diagram illustrating a method of manufacturing a bonded glass according to an embodiment of the present invention.
FIGS. 5-7 illustrate a laminated glass made in accordance with an embodiment of the present invention. FIG.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention, and how to accomplish them, will become apparent by reference to the embodiments described in detail below with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described below, but may be embodied in various other forms.

The present embodiments are provided so that the disclosure of the present invention is thoroughly disclosed and that those skilled in the art will fully understand the scope of the present invention. And the present invention is only defined by the scope of the claims. Thus, in some embodiments, well known components, well known operations, and well-known techniques are not specifically described to avoid an undesirable interpretation of the present invention.

In addition, like reference numerals refer to like elements throughout the specification. Moreover, terms used herein (to be referred to) are intended to illustrate the embodiments and are not intended to limit the invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. Also, components and acts referred to as " comprising (or comprising) " do not exclude the presence or addition of one or more other components and operations.

Unless defined otherwise, all terms (including technical and scientific terms) used herein may be used in a sense commonly understood by one of ordinary skill in the art to which this invention belongs. Also, commonly used predefined terms are not ideally or excessively interpreted unless they are defined.

Hereinafter, the technical features of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view illustrating a bonded glass according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of the bonded glass shown in FIG. 1, and FIG. 3 is a cross- .

1 to 3, a laminated glass 10 according to an embodiment of the present invention is manufactured by inserting a wire net 13 into a liquid glass, 15, 16 and 17 are sandwiched between the first and second glass plates 11 and 12 made of a predetermined size after the wire mesh 13 is sandwiched between the first and second glass plates 11 and 12, And then joining them to each other.

As described above, the laminated glass 10 according to the embodiment of the present invention includes the first and second PVB films 14 and 15, the wire mesh 13, and the first and second PVB films 11 and 12, Since the third and fourth PVB films 16 and 17 are sequentially laminated and then thermally bonded to each other, the first and second glass plates 11 and 12 can be manufactured with different colors or transparency, It is possible to print a variety of patterns, shapes, or advertisement texts, etc., so that the appearance can be decorated beautifully, thereby improving the decorative property and aesthetics and doubling the visual effect.

As shown in FIG. 2, the first and second glass plates 11 and 12 constitute the outermost layer, that is, the uppermost layer and the lowermost layer of the laminated glass 10, It is desirable to apply tempered glass having superior mechanical strength and thermal durability to ordinary glass in order to improve the mechanical strength and thermal durability of the glass to improve stability.

As shown in FIG. 3, the metal wire net 13 is a mesh metal net that is bonded between the first and second glass plates 11 and 12. All the metal net can be applied, It is desirable to apply a lightweight aluminum material. Also, as shown in Fig. 5 to Fig. 7, the shape may be diamond-shaped, quadrangular, or honeycomb-like, but is preferably formed of a honeycomb having excellent structural stability.

Such a wire net 13 is bonded between the first and second glass plates 11 and 12 to improve the mechanical strength of the bonded glass 10 and to improve the mechanical strength of the glass formed during the breakage of the first and second glass plates 11 and 12 Prevents scattering of debris. That is, it is possible to prevent the joint glass 10 from being easily broken when an impact is applied to the joint glass 10 by a natural disaster such as an earthquake, a typhoon, a tsunami, or an artificial force of a person. On the other hand, .

The first and second PVB films 14 and 15 are interposed between the first glass plate 11 and the wire mesh 13 to improve the mechanical strength of the joint glass 10 together with the wire mesh 13, Thereby preventing scattering. It is effective to form the first and second PVB films 14 and 15 relatively thick in view of the mechanical strength of the bonded glass 10 and scattering of the glass fragments. However, when the PVB film is thickly formed as a single film, There is a problem that the bonding property between the glass plate 11 and the wire netting 13 is deteriorated and is easily separated. Accordingly, in the present invention, it is preferable to use two PVB films instead of one thick PVB film, and each film preferably has a thickness of 0.35 mm to 0.70 mm, preferably 0.38 mm.

The third and fourth PVB films 16 and 17 are sandwiched between the wire mesh 13 and the second glass plate 14 so that the mechanical strength of the laminated glass 10 as well as the first and second PVB films 14 and 15 While preventing the glass fragments from scattering. The third and fourth PVB films 16 and 17 are also formed to have a thickness of 0.35 mm to 0.70 mm, preferably 0.38 mm, so as to be stably bonded in the thermal bonding process, similarly to the first and second PVB films 14 and 15 It is preferable to have a thickness.

The first to fourth PVB films 16 and 17 may be colorless or various colors. For example, when the first and second glass plates 11 and 12 are colorless and transparent, as in Figs. 5 and 6, any one of the first to fourth PVB films 14, 15, 16, Green or yellow colors to enhance the ornamental and aesthetics and double the visual effect.

On the other hand, between the first and second PVB films 14 and 15 and between the third and fourth PVB films 16 and 17 or between the first glass plate 11 and the first PVB film 14, A flame retardant film (not shown) may be further interposed between the glass plate 12 and the fourth PVB film 17 at least in one place. At this time, it is preferable that the flame retardant film has a plurality of holes penetrating the upper and lower portions. Through this, the gel-like adhesive formed by melting the PVB film by the heat during the bonding process flows through the holes and is vertically bonded, Can be further improved. For example, as the flame retardant film, it is preferable to use a polycarbonate (PC) film which is excellent in impact resistance, flame retardancy, heat resistance and cold resistance and is relatively easy to work.

Hereinafter, a method of manufacturing a bonded glass according to an embodiment of the present invention will be described.

FIG. 4 is a flowchart illustrating a method of manufacturing a bonded glass according to an embodiment of the present invention. Referring to FIG.

2 and 4, the first and second glass plates 11 and 12, the wire netting 13, and the first to fourth PVB films 14, 15, 16 and 17 are prepared (ST1). At this time, the first and second glass plates 11 and 12 are made to have a predetermined size, and then their surfaces are washed and dried. Then, a silk printing process is carried out on the surface thereof to print various patterns, forms or advertisement texts as shown in Fig.

Thereafter, the first and second PVB films 14 and 15, the wire mesh 16, and the third and fourth PVB films 16 and 17 are sequentially disposed between the first glass plate 11 and the second glass plate 12 And then preheated at a temperature of 120 ° C to 160 ° C in a preheating furnace (ST2, ST3). That is, the first glass sheet 11, the first PVB film 14, the second PVB film 15, the wire mesh 13, the third PVB film 16, the fourth PVB film 17, 12) are sequentially stacked in a preheating furnace to heat the sandwich structure first. In this process, the first to fourth PVB films 14, 15, 16 and 17 melt at least partly by heat to function as an adhesive on the gel, thereby stably bonding the first and second glass plates 11 and 12.

In order to improve the adhesion between the first and second glass plates 11 and 12 and the wire net 13 in the preheating joining step ST3, the first to fourth PVB films 14, 15, 16 and 17 are melted by heat The resulting gel-like adhesive preferably includes the hole of the wire mesh 13 and surrounds the entire wire mesh 13. It is preferable that the sum of the thicknesses of the first and second PVB films 14 and 15 and the sum of the thicknesses of the third and fourth PVB films 16 and 17 are thicker than the thickness of the wire mesh 13.

When the holes of the wire net 13 are not completely filled and remain as empty spaces, air bubbles are generated in the inside of the wire net 13, so that the adhesion of the wire net 13 is lowered and the value of the product is lowered visually . Accordingly, in the preheating joining step ST3 of the present invention, the first to fourth PVB films 14, 15, 16 and 17 are sufficiently melted so that the adhesive on the gel completely bury the holes of the wire mesh 13, It is preferable to carry out the heat treatment for a sufficient time in the preheating furnace to such an extent that the entire area of the substrate can be coated with a uniform thickness.

Thereafter, the primary bonded structure is injected into the main pressure furnace, and the secondary bonded structure is heated while being pressurized (ST4).

At this time, the sandwich structure must be pressed so that the first and second glass plates 11 and 12 are not broken during the secondary bonding step, and the heating temperature and the heating time are set so that the first to fourth PVB films 14, 15, 16 and 17 ) Is determined by taking into account the melting point and thickness. For example, the pressing force is 10 kg / cm 2 to 14 kg / cm 2, preferably 12 kg / cm 2, considering the thickness, type (material), shape and area of the first and second glass plates 11 and 12 as a whole . The heating temperature is set at 140 to 160 ° C. so that the first to fourth PVB films 14, 15, 16 and 17 can be uniformly melted in consideration of the melting point and the thickness of the first to fourth PVB films 14 and 15, Hour to 7 hours, preferably 6 hours.

If the heating temperature exceeds 160 ° C during the secondary bonding step, the PVB film may be boiled and bubbles may be generated or decomposed to weaken the adhesive strength, resulting in a decrease in the product value. Particularly, since the PVB film does not uniformly melt over the entire area, not only the adhesive force is lowered at each site but also the adhesive agent on the gel is concentrated to a specific site, so that the thickness deviation of the bonded glass sheet 10 can be generated.

Therefore, in the embodiment of the present invention, when the first to fourth PVB films 14, 15, 16, and 17 each have a thickness of 0.38 mm, the secondary bonding process is performed under the main pressure, for example, ) Or 6 hours in a vacuum chamber at a temperature range of 140 to 160 DEG C with a pressing force of 12 kg / cm < 2 > so that the wire mesh 13 is stably held between the first and second glass plates 11 and 12 It is possible to manufacture an optimal bonded glass 10 adhered to the glass substrate 10.

Thereafter, further post-treatment may be carried out in a vacuum state at a temperature of 70 ° C to 110 ° C to remove fine air and air bubbles that may remain between the first and second glass plates 11 and 12. At this time, the post-treatment step can be carried out in the main pressure furnace subjected to the secondary bonding step.

Thereafter, the post-treatment sandwich structure is taken out from the main pressure furnace and naturally cooled. As a result, the completed bonded glass can be obtained as shown in FIGS. 5 to 7.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

10: Laminated glass
11 to 12: First and second glass plates
13: Wire mesh
14 to 17: First and fourth PVB films

Claims (6)

delete delete delete delete (a) preparing first and second glass plates, a wire netting, and first to fourth PVB films, and silk printing the various patterns, shapes or advertising text on at least one of the first and second glass plates; (b) forming a sandwich structure by sequentially laminating the first and second PVB films, the wire netting, the third and fourth PVB films between the first and second glass plates; (c) placing the sandwich structure in a preheating furnace and thermally bonding the sandwich structure; And (d) injecting the sandwich structure into a main pressure furnace to heat and thermally bond the sandwich structure; A method of manufacturing a bonded glass including:
The sandwich structure of the step (c) is thermally bonded at a temperature of 120 ° C to 160 ° C in a preheating furnace,
The sandwich structure of the step (d) is heated and thermally bonded at a pressure of 10 kg / cm 2 to 14 kg / cm 2 at a temperature of 140 ° C to 160 ° C for 5 hours to 7 hours,
The first to fourth PVB films each have a thickness of 0.35 mm to 0.70 mm,
Wherein when the first and second glass plates are transparent, coloring is applied to any one of the first to fourth PVB films,
Wherein at least one of the first and second PVB films, between the third and fourth PVB films, between the first glass plate and the first PVB film, or between the second glass plate and the fourth PVB film, The film is further interposed, and the flame retardant film has a plurality of holes penetrating the upper and lower portions. The gel-like adhesive formed by melting the PVB film by the heat during the bonding process flows through the holes and adheres to the upper and lower portions. The sum of the thicknesses of the first and second PVB films 14 and 15 and the sum of the thicknesses of the third and fourth PVB films 16 and 17 is greater than the thickness of the wire mesh 13, So as to surround the whole of the wire netting (13). delete

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