JP2001278639A - Film reinforced glass plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sheet of film reinforced glass plate which is excellent in impact resistance and penetration resistance and small in thickness. SOLUTION: This film reinforced glass plate is characterized in that on a surface of a sheet of glass plate, a sheet of organic resin film whose principal component is EVA is laminated and thereon, a sheet of resin film of organic polymer is laminated and these are press bonded.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to glass having excellent impact resistance and penetration resistance used for automobiles, railway vehicles, buildings, showcases, etc., and more particularly to a single-plate film excellent in crime prevention. Related to tempered glass.

[0002]

2. Description of the Related Art In general, glass used for automobiles, particularly a windshield, has an organic resin film (intermediate film) between glass plates.
Laminated glass is used. The organic resin film is formed of, for example, a PVB film, and the presence of the organic resin film improves the penetration resistance and the like of the laminated glass. In addition, broken glass fragments remain adhered to the organic resin film in response to an external impact, thereby preventing their scattering. For this reason, for example, even if the laminated glass of an automobile is broken for theft, intrusion, or the like, the window cannot be freely opened, so that it is also useful as security glass.

[0003] On the other hand, for example, door glass and glazing of automobiles are generally less likely to be destroyed in an accident.
Further, since it does not require the penetration resistance or the like of the above-mentioned windshield, a slightly strengthened low-strength glass sheet is used. However, when only such one glass plate is used, there are the following disadvantages. That is,
(1) Inferior to laminated glass in terms of impact resistance, penetration resistance, etc. (2) If destroyed for the purpose of theft or intrusion, etc., it breaks into many pieces and the windows can be freely opened. Can, etc. For this reason, it is desired to use glass having characteristics such as laminated glass also for the door glass and the fitted glass.

[0004] Such laminated glass, particularly for door glass of automobiles, is disclosed in, for example, JP-A-6-3218.
No. 57 proposes a laminated glass for automobiles having a five-layer structure having a pre-reinforced silicate glass outer plate and a polycarbonate plate core, wherein the outer plate is bonded to the polycarbonate core plate with a thermoplastic polyurethane layer. .

[0005] However, as described above, the door glass or the like is usually a single piece of glass, and the thickness, strength and the like of the above-mentioned laminated glass for a windshield are not usually required. Further, since the laminated glass has a certain thickness, it may not be possible to use the laminated glass for, for example, a side glass of a small car having a relatively small size and a fitted glass. Furthermore, laminated glass having a multilayer structure is
Production is more complicated than single-pane glass.

[0006] Therefore, there is a demand for a thin film reinforced glass which has security as well as the above-mentioned impact resistance and penetration resistance and which can be manufactured relatively easily. Furthermore, such a film-reinforced glass is also required to be used for railway vehicles, buildings, showcases, and the like. That is, not only the glass used for these materials is not only transparent, but also from the viewpoint of the above-mentioned crime prevention, those having impact resistance, penetration resistance and the like are required.

[0007]

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a thin film reinforced glass which is excellent in security such as impact resistance and penetration resistance, and is excellent in security. Aim.

[0008]

Means for Solving the Problems The present inventors have conducted intensive studies to solve the above-mentioned problems, and as a result, an ethylene-vinyl acetate copolymer (hereinafter referred to as "EVA") has been formed on the upper surface of one glass plate. By using a film reinforced glass obtained by laminating a film made of an organic polymer on the upper surface of an organic resin film having a main component of, an impact resistance, a penetration resistance, etc., particularly a thickness excellent in crime prevention. A thin film tempered glass was obtained.

[0009]

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a single glass plate, EV
A film-reinforced glass obtained by laminating a film made of an organic resin film containing A as a main component and an organic polymer, and is particularly excellent in security. The EVA can include additives such as a plasticizer and an organic peroxide. For the film made of an organic polymer, for example, polyethylene terephthalate (hereinafter, referred to as “PET”) is used. Further, the surface is preferably subjected to a hard coat treatment using a UV curable resin. This UV-curable resin generally contains additives such as a reactive diluent and a photopolymerization initiator.

[0010] The film-reinforced glass of the present invention has appropriate performance in impact resistance, penetration resistance and the like due to such a structure. For this reason, for example, it is preferable to use it for glass such as window glass mounted on various vehicle bodies and buildings, or glass for showcases and show windows. In other words, from the viewpoint of crime prevention, such glass is prevented from easily entering from the outside due to destruction or the like, but has impact resistance and penetration resistance that can be broken in an emergency such as an accident. Is also needed. Therefore, when used in such applications, the film-reinforced glass of the present invention is preferably used.

Hereinafter, the film-reinforced glass of the present invention will be described in detail with reference to FIGS.

In FIG. 1, an organic resin film 2 is laminated on the surface of one glass plate 1, and a film 3 made of an organic polymer is laminated on the organic resin film 2. The organic resin film 2 is a film made of a resin composition containing EVA as a main component, and is preferably thermally cured from the viewpoints of water resistance and durability, although the transparency is slightly inferior. The organic resin film 2 is also improved in adhesion to the film 3 made of the organic polymer.

As the organic polymer of the film 3, for example, PET having excellent strength is used. The organic polymer film 3 is provided to remarkably prevent breakage of the glass. However, it is preferable to form a hard coat layer in order to improve the scratch resistance and the like of the surface. That is, by using such a film, the performance as described above can be obtained even with a single glass plate, for example, as a side glass and a fitting glass for a main vehicle such as a small car,
It becomes possible to install the film reinforced glass excellent in crime prevention of the present invention.

FIG. 2 shows a cross section taken along the line AA ′ of FIG. It is clearly shown that the film-reinforced glass is composed of one glass plate 1, a film 3 made of an organic polymer, and an organic resin film 2 sandwiched therebetween. When the thickness of the organic resin film 2 is small, the penetration resistance of the film-reinforced glass is reduced, and when the thickness is large, the transparency is reduced. Further, the thickness is set in consideration of the place where the film-reinforced glass of the present invention is used. For example, in the case of a side glass and a fitted glass of an automobile, the organic resin film does not need to be as thick as a windshield.
The range of 10 mm is general, and the range of 0.3 to 3 mm is preferable. Similarly, the thickness of the film 3 made of an organic polymer is generally in the range of 0.1 to 2 mm, and preferably in the range of 0.5 to 1 mm. Organic resin film 2
And the thickness of the film 3 can be changed according to the place where the glass is used or the like.

The production of the film-reinforced glass of the present invention is as follows. First, an organic resin film 2 having the same shape as this glass plate is placed on the surface of one glass plate 1, and a film 3 made of an organic polymer having the same shape is formed. And press-bonding them. The pressure bonding is usually performed with a roll or the like under heating. The pressure bonding may be performed using an adhesive. Next, if desired, the surface of the film 3 made of an organic polymer is subjected to a hard coat treatment.

The film-reinforced glass of the present invention is characterized in that a film 3 made of an organic polymer is laminated on the surface of one glass plate 1 with an organic resin film 2 interposed therebetween. That is, EVA used for the organic resin film 2 for bonding the film 3 to the glass 1 has excellent water resistance. For this reason, for example, when this is used for a car door glass, the door glass can be freely moved up and down,
Frequent contact with window frames and peeling easily occurs. However, since the film-reinforced glass of the present invention has improved water resistance,
The peeling between the glass plate 1 and the film 3 made of an organic polymer can be significantly prevented. In addition, even if the glass plate is broken for the purpose of crime, the fragments remain attached due to the presence of the organic resin film 2 and the windows are not easily opened, so that they are useful as security glass. is there.

One glass plate 1 of the present invention is usually silicate glass. The thickness of the glass plate varies depending on the place where the film-reinforced glass of the present invention is installed. For example, when used for a side glass and a glazing of an automobile, it is not necessary to make it thick like a windshield, but 1 to 10 m
m is general, and 3 to 5 mm is preferable. The one glass plate 1 is chemically or thermally strengthened.

EVA used for the organic resin film 2 in the present invention
Has a vinyl acetate content of 10 to 50% by mass, especially 15 to 50% by mass.
Preferably, it is 40% by mass. When the vinyl acetate content is less than 10% by mass, the transparency of the resin obtained when crosslinking and curing at a high temperature is not sufficient. On the contrary, when the content exceeds 50% by mass, the impact resistance in the case of making a security glass is obtained. , The penetration resistance tends to be insufficient.

The EVA-containing resin composition used for the organic resin film 2 can contain various additives such as a plasticizer, an organic peroxide, and an adhesion improver.

The plasticizer is not particularly limited, but generally esters of polybasic acids and esters of polyhydric alcohols are used. Examples include dioctyl phthalate, dihexyl adipate, triethylene glycol-di-2-ethyl butyrate, butyl sebacate,
Examples thereof include tetraethylene glycol diheptanoate and triethylene glycol diperargonate. One plasticizer may be used, or two or more plasticizers may be used in combination. The content of the plasticizer is preferably not more than 5 parts by weight based on 100 parts by weight of EVA.

The EVA-containing resin composition used for the organic resin film 2 according to the present invention contains an organic peroxide as an agent for controlling the adhesion to one glass plate 1 and a film 3 made of an organic polymer. Since the curability of the resin composition containing an organic peroxide is improved by heating, the film strength of the obtained organic resin film 2 is also improved.

As the organic peroxide, any organic peroxide can be used as long as it decomposes at a temperature of 100 ° C. or more to generate radicals. Organic peroxide is
In general, the temperature is selected in consideration of the film forming temperature, composition adjustment conditions, curing (bonding) temperature, heat resistance of the adherend, and storage stability. In particular, those having a decomposition temperature of 70 ° C. or more with a half-life of 10 hours are preferred.

Examples of the organic peroxide include 2,5-
Dimethylhexane-2,5-dihydroperoxide, 2,5-dimethyl-2,5-di (t-butylperoxy) hexane-3-di-t-butylperoxide,
t-butylcumyl peroxide, 2,5-dimethyl-
2,5-di (t-butylperoxy) hexane, dicumyl peroxide, α, α′-bis (t-butylperoxyisopropyl) benzene, n-butyl-4,4-bis (t-butylperoxy) ) Valerate, 2,2-bis (t-butylperoxy) butane, 1,1-bis (t-
Butylperoxy) cyclohexane, 1,1-bis (t
-Butylperoxy) -3,3,5-trimethylcyclohexane, t-butylperoxybenzoate, benzoyl peroxide, t-butylperoxyacetate, methylethylketone peroxide, 2,5-dimethyl-2,5-bis (t -Butylperoxy) -3,
3,5-trimethylcyclohexane, 1,1-bis (t
-Butylperoxy) cyclohexane, methyl ethyl ketone peroxide, 2,5-dimethylhexyl-2,
5-bisperoxybenzoate, t-butyl hydroperoxide, p-menthane hydroperoxide, p-chlorobenzoyl peroxide, hydroxyheptyl peroxide, chlorohexanone peroxide, octanoyl peroxide, decanoyl peroxide, lauroyl peroxide Oxide, cumylperoxy octoate, succinic peroxide, acetyl peroxide, t-butylperoxy (2-ethylhexanoate), m-toluoyl peroxide, t-butylperoxyisobutyrate and 2,4 -Dichlorobenzoyl peroxide. One kind of the organic peroxide may be used, or two or more kinds may be used in combination. The content of the organic peroxide is determined in the resin composition 1
The range is preferably 0.1 to 5 parts by weight with respect to 00 parts by weight.

When EVA is crosslinked with light, a photosensitizer (photopolymerization initiator) is usually used instead of the above oxides.
5 parts by weight or less, preferably 0.1-5.
0 parts by weight are used. Examples of the photopolymerization initiator,
Benzoin, benzophenone, benzoyl methyl ether, benzoin ethyl ether, benzoin isopropyl ether, benzoin isobutyl ether, dibenzyl, 5-nitroacenaphthene, hexachlorocyclopentadiene, p-nitrodiphenyl, p-nitroaniline, 2,4,6-trinitro Aniline, 1,2-benzanthraquinone, 3-methyl-1,3-diaza-1,9
-Benzanthrone and the like. These can be used alone or in combination of two or more.

The organic resin film 2 of the present invention can improve or adjust various physical properties of the film (mechanical strength, optical properties such as adhesiveness and transparency, heat resistance, light resistance, cross-linking speed, etc.). It is preferable to contain an acryloxy group-containing compound, a methacryloxy group-containing compound and / or an epoxy group-containing compound for improving the mechanical strength.

The acryloxy group-containing compound and methacryloxy group-containing compound to be used are generally acrylic acid or methacrylic acid derivatives, for example, esters or amides of acrylic acid or methacrylic acid. Examples of ester residues include linear alkyl groups such as methyl, ethyl, dodecyl, stearyl, lauryl, etc., cyclohexyl, tetrahydrofurfuryl, aminoethyl, 2-hydroxyethyl, 3-hydroxypropyl And a 3-chloro-2-hydroxypropyl group. Further, esters of polyhydric alcohols such as ethylene glycol, triethylene glycol, polypropylene glycol, polyethylene glycol, trimethylolpropane, pentaerythritol and acrylic acid or methacrylic acid can also be mentioned.

Examples of the amide include diacetone acrylamide.

Examples of the polyfunctional compound include esters obtained by esterifying a plurality of acrylic acids or methacrylic acids with glycerin, trimethylolpropane, pentaerythritol and the like.

The epoxy-containing compounds include triglycidyl tris (2-hydroxyethyl) isocyanurate, neopentyl glycol diglycidyl ether,
1,6-hexanediol diglycidyl ether, allyl glycidyl ether, 2-ethylhexyl glycidyl ether, phenyl glycidyl ether, phenol (ethyleneoxy) ₅ glycidyl ether, pt-butylphenyl glycidyl ether, adipic acid diglycidyl ester, phthalic acid Examples thereof include diglycidyl ester, glycidyl methacrylate, and butyl glycidyl ether.

In the present invention, in order to further increase the adhesive strength between the organic resin film 2 and one glass plate 1 and the film 3 made of an organic polymer, a silane coupling agent may be added as an adhesion improver. it can.

As an example of this silane coupling agent, γ
-Chloropropylmethoxysilane, vinylethoxysilane, vinyltris (β-methoxyethoxy) silane, γ
Methacryloxypropyltrimethoxysilane, vinyltriacetoxysilane, γ-glycidoxypropyltrimethoxysilane, γ-glycidoxypropyltriethoxysilane, β- (3,4-epoxycyclohexyl) ethyltrimethoxysilane, vinyltrimethoxysilane Chlorosilane, γ
-Mercaptopropyltrimethoxysilane, γ-aminopropyltriethoxysilane, N-β- (aminoethyl) -γ-aminopropyltrimethoxysilane. These silane coupling agents may be used alone or in combination of two or more. The content of the above compound is preferably 5 parts by weight or less based on 100 parts by weight of EVA.

The organic resin film 2 of the present invention can be produced, for example, by a method of obtaining a sheet by ordinary extrusion molding, calender molding or the like. Alternatively, a sheet-like material can be obtained by dissolving the resin composition in a solvent, applying the solution on an appropriate support with an appropriate coater (coater), and drying to form a coating film.

Examples of the organic polymer used for the film 3 of the present invention include PET, polyethylene naphthalate, polyethylene butyrate, etc., and PET is preferable.

The surface of the film 3 made of the organic polymer may be subjected to a hard coat treatment. A UV-curable resin is generally used as the resin used for the hard coat treatment, but is not particularly limited as long as it is a low molecular weight and multifunctional resin suitable for the hard coat treatment. The UV-curable resin includes, for example, urethane oligomers having a plurality of ethylenic double bonds, oligomers such as polyester oligomers and epoxy oligomers, pentaerythritol tetraacrylate (PETA), pentaerythritol tetramethacrylate, and dipentaerythritol hexaacrylate (DPEHA). Monofunctional or polyfunctional oligomers are preferred. The resin is generally composed of an oligomer, a reactive diluent if necessary, and a photopolymerization initiator. Examples of photopolymerization initiators include benzoin,
Benzophenone, benzoyl methyl ether, benzoin ethyl ether, benzoin isopropyl ether,
Benzoin isobutyl ether, dibenzyl, 5-nitroacenaphthene, hexachlorocyclopentadiene, p
-Nitrodiphenyl, p-nitroaniline, 2,4,6
-Trinitroaniline, 1,2-benzanthraquinone, 3-methyl-1,3-diaza-1,9-benzanthrone and the like. These can be used alone or in combination of two or more. The oligomer, reactive diluent and initiator may be used alone or in combination of two or more. The content of the reactive diluent is generally 0.1 to 10 parts by weight, preferably 0.5 to 5 parts by weight, based on 100 parts by weight of the UV curable resin. The content of the photopolymerization initiator is preferably 5 parts by weight or less based on 100 parts by weight of the UV curable resin.

In the film-reinforced glass with a hard coat of the present invention, the one glass plate 1, the sheet-like organic resin film 2 and the film 3 made of an organic polymer are laminated, and the laminate having the sandwich structure is degassed. Then, it is pressed under heating. Thereafter, if desired, it can be obtained by hard coating. Alternatively, after the lamination, a hard coat may be applied, UV cured, and then pressed under heating.

The hard coat layer contains the above-mentioned components as a main component. However, the hard coat layer has various functions by modifying the above oligomer or monomer, or further using other functional resins and additives. An excellent hard coat layer can be obtained. For example, a high scratch-resistant hard coat layer having further improved scratch resistance, an anti-fogging hard coat layer provided with anti-fogging property, a conductive hard coating layer having conductivity, an anti-static property given with anti-static property Hard coat layers, high gloss hard coat layers with improved gloss, solvent resistant hard coat layers with particularly excellent solvent resistance, and low moisture permeable hard coat layers that hardly transmit moisture. It is preferable to form a hard coat layer by combining at least two of these layers depending on the use. Of course, one layer may be used.

In the present invention, the high abrasion-resistant hard coat has a pencil hardness of 8H or more, preferably 9H or more. The general hard coat layer is set to 5H or more. In order to further improve the abrasion resistance, it can be performed by further increasing the hardness as described above than the ordinary hard coat layer, but it is necessary to prevent the film crack by making the film thickness smaller than usual. . Examples of the scratch-resistant hard coat include UVCH1105 (trade name, manufactured by Toshiba Silicone Co., Ltd.).

The anti-fogging hard coat layer is a layer that does not dew due to water vapor and does not decrease in transparency. In order to impart anti-fogging properties, it is necessary to form a hard coat layer using, for example, a hydrophilic oligomer or monomer, or a surfactant (particularly a wet penetrant). As the anti-fog hard coat, for example, trade name: Diabeam M
H-3263 (manufactured by Mitsubishi Rayon Co., Ltd.) can be mentioned.

The conductive hard coat layer is a highly conductive layer, and usually has an electric conductivity of 10 ² to 10 ⁴ s / c in the present invention.
Refers to a layer having m. In order to provide conductivity for cutting electromagnetic waves, for example, a hard coat layer containing a conductive material (metal fine particles of carbon, silver, copper, nickel, etc.) or the like is formed. Examples of the conductive hard coat include a trade name: Conductive EJ-3 (manufactured by Dainippon Paint Co., Ltd.).

The antistatic hard coat layer is a layer that does not easily generate static electricity due to friction. In the present invention, it is generally a layer having a volume resistivity value of 10 ¹² Ω · cm or less. In general, the antistatic property can be imparted by using various surfactants, oligomers and monomers having a group having a surface active function, and the like. Examples of the antistatic hard coat include Sunrad UXH601 (trade name, manufactured by Sanyo Chemical Industries, Ltd.).

The high gloss hard coat layer has a gloss (gloss)
In the present invention, the gloss is usually 95 or more (J
IS-K-7105). In order to improve gloss, it is generally performed by suitably combining an oligomer and a monomer component. Examples of the high gloss hard coat include trade name: ADEKA OPTOMER KR-567 (manufactured by Asahi Denka Kogyo KK).

Although the hard coat layer itself is excellent in solvent resistance, the solvent resistant hard coat layer of the present invention is a layer that is also excellent in high polar solvents (DMF and the like). In order to improve the solvent resistance, for example, a silicon-modified or fluorine-modified oligomer, monomer or resin is used. As the solvent-resistant hard coat, for example, trade name: silicone hard coat agent KP85
1 (manufactured by Shin-Etsu Chemical Co., Ltd.).

The low-moisture-permeable hard coat layer is a layer that hardly permeates water vapor.
5 g / m ² · 24 h or less (JIS-Z-0208) In order to make the moisture hardly permeate, for example, silicon-modified, fluorine-modified oligomers, monomers or resins are used. Examples of the low moisture permeable hard coat include a trade name: low moisture permeable ultraviolet curing resin (manufactured by Nippon Kasei Co., Ltd.).

The layer thickness of the hard coat layer is 0.1 in the case of one layer.
The thickness is preferably 1 to 20 μm (particularly 1 to 15 μm), and in the case of a multilayer, the total is preferably in these ranges.

On the surface of one glass plate 1, metal and / or
Alternatively, a transparent conductive layer made of a metal oxide may be provided.

The thus obtained impact resistance, penetration resistance, etc.
Particularly, a film-reinforced glass excellent in security can be used for the following glass. That is, the glazing of automobiles, side glass and rear glass, railway vehicles,
For example, showcases and shows for indoor exhibitions, such as door glasses of doors for opening and closing passengers such as ordinary vehicles, express vehicles, limited express vehicles and sleeper vehicles, window glasses and interior door glasses, windows and interior door glasses in buildings such as buildings. And the like. Preferably the side or rear glass of the car,
It is useful for window glass of railway vehicles, particularly for door glass of automobiles.

[0047]

The present invention will be described in more detail with reference to the following examples.

Example 1 <Preparation of Automotive Glass> EVA (200 μm thick) and PET were placed on a single 5 mm-thick glass plate that had been washed and dried in advance.
(200 μm thick) were laminated, placed in a rubber bag, degassed under vacuum, and pre-pressed at a temperature of 80 ° C. Next, the pre-pressed glass was placed in an oven and subjected to a pressure treatment at a temperature of 150 ° C. for 30 minutes.

<Evaluation of Film-Reinforced Glass> The obtained glass has high transparency, has no optical distortion, and has excellent impact resistance, penetration resistance, etc., and therefore has a side or rear glass for automobiles. Was appropriate.

The method for producing glass for automobiles shown in Example 1 can also be used for producing a glass structure having the same basic structure as the above glass for automobiles, for example, a window glass for a railway vehicle. .

Example 2 <Preparation of Automotive Glass> An EVA organic resin film (containing 1% by mass of benzoin ethyl ether; 200 μm thickness) and PET were placed on one glass plate having a thickness of 5 mm, which was previously washed and dried.
A film (200 μm thick) is laminated, and a scratch-resistant hard coat (trade name: U
VCH1105 (manufactured by Toshiba Silicone Co., Ltd .; 50% by mass)
Solution)) and an organic solvent solution of an antistatic hard coat (trade name: Sunrad UXH601 (Sanyo Chemical Industry Co., Ltd.)
And a 50% by mass solution) were applied in this order by a roll coater, and then a PET release sheet was overlaid on the applied layer.

The obtained laminate was put in a rubber bag, degassed under vacuum, and preliminarily pressed at a temperature of 80 ° C. Next, ultraviolet irradiation (1 kW / cm UV lamp, irradiation distance 20 c
m, irradiation time 30 seconds) and hard coat (total layer thickness 10
μm) and the organic resin film was crosslinked.

<Evaluation of Film-Reinforced Glass> The obtained glass had high transparency and no optical distortion, and also had impact resistance, penetration resistance, and scratch resistance (surface hardness of hard cord layer: 6H). Further, since it has excellent antifogging properties, it was suitable as a side or rear glass of an automobile.
This glass is used again for automobiles, and the exterior is 10
When the temperature was adjusted to 30 ° C. and the humidity to 60%, no blackening was observed on the glass. The method for producing automotive glass described in the second embodiment can also be used when manufacturing a glass structure having the same basic structure as the above-mentioned automotive glass, for example, a window glass of a railway vehicle.

Example 3 <Preparation of Automotive Glass> An EVA organic resin film (containing 1% by mass of benzoin ethyl ether; 200 μm thickness) and PET were placed on a single glass plate having a thickness of 5 mm, which was previously washed and dried.
A film (200 μm thick) is laminated, and a conductive hard coat (trade name: Conductive EJ-3 (manufactured by Dainippon Paint Co., Ltd.); 50% by mass solution), which is an ultraviolet curable resin, is placed on the PET surface. Hard coat (Product name: UVCH
1105 (manufactured by Toshiba Silicone Co., Ltd .; 50% by mass solution)) was applied using a roll coater, and then a PET release sheet was overlaid on the applied layer.

The obtained laminate was put in a rubber bag, degassed under vacuum, and pre-pressed at a temperature of 80 ° C. Next, ultraviolet irradiation (1 kW / cm UV lamp, irradiation distance 20 c
m, irradiation time 30 seconds) and hard coat (total layer thickness 10
μm) and the organic resin film was crosslinked.

<Evaluation of Film-Reinforced Glass> The obtained glass has high transparency and no optical distortion, and has impact resistance, penetration resistance, and abrasion resistance (surface hardness of hard cord layer: 8H). Therefore, it was suitable as an automobile side or rear glass. A hexahedron (hollow cube) was prepared from these six glass sheets, a mobile phone was placed inside the glass, and when the phone was changed from the outside, the mobile phone could not be received.

The method for producing glass for automobiles shown in Example 3 can also be used for producing a glass structure having the same basic structure as the above glass for automobiles, for example, a window glass for a railway vehicle. .

[0058]

According to the film-reinforced glass according to the present invention described above, an EVA organic resin film is laminated on the surface of one glass plate, and a film made of an organic polymer is laminated on the organic resin film and pressed. As a result, even if the thickness is reduced, it has impact resistance close to that of laminated glass, penetration resistance, etc., and also has security properties, so it can be used in automobiles, railway vehicles, buildings,
It can be used for showcases and the like.

[0059]

[Brief description of the drawings]

FIG. 1 is a perspective view illustrating an embodiment of a film-reinforced glass according to the present invention.

FIG. 2 is a sectional view taken along line AA ′ in FIG.

[Explanation of symbols]

 1 1 glass plate (outside) 2 organic resin film 3 film made of organic polymer

Continued on the front page (72) Inventor Yasuhiro Iino First term Bridgestone Yokohama Plant, Kashio-cho, Totsuka-ku, Yokohama-shi, Kanagawa F-term (reference) 4G059 AA01 AC16 AC17 FA09 FA12 FA14 FB04 GA01 GA02 GA04 GA11

Claims (7)

[Claims] 1. A film-reinforced glass in which an organic resin film containing an ethylene-vinyl acetate copolymer is laminated on the upper surface of a single glass plate, and a film made of an organic polymer is further laminated on the upper surface. 2. The film reinforced glass according to claim 1, wherein the ethylene-vinyl acetate copolymer is cured. 3. The film reinforced glass according to claim 1, wherein the organic polymer is polyethylene terephthalate. 4. The film reinforced glass according to claim 1, wherein a hard coat layer is formed on a surface of the film. 5. The film reinforced glass according to claim 1, wherein the hard coat layer is formed from a UV curable resin. 6. A hard coat layer comprising a scratch-resistant hard coat layer, an anti-fog hard coat layer, a conductive hard coat layer,
The film reinforced glass according to any one of claims 1 to 5, comprising at least two layers selected from an antistatic hard coat layer, a high gloss hard coat layer, a solvent resistant hard coat layer, and a low moisture permeable hard coat layer. 7. The method according to claim 1, wherein the organic resin film is placed on the surface of the one glass plate, the film is placed on the organic resin film, and these are pressed. A method for producing a film-reinforced glass according to the above.