JPH1076604A - Glass shatterproof laminate - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To easily attach a substrate film (glass shatterproof film) to a glass surface without mixing air bubbles, and to peel off the substrate film from the glass due to deterioration with time after the application. There is no, and when it becomes necessary to remove the base film from the glass, it can be easily peeled off,
Provided is a laminated body for preventing glass scattering which does not stain glass after peeling. SOLUTION: At least one side of the base film having such an adhesive property that it can be attached to glass,
A laminate in which a release film is laminated, wherein the base film is made of a vinyl chloride resin or a polyolefin resin, and the laminate has a surface opposite to a surface on which the base film is attached to glass. Direction, the curl amount is 10 to 1
A glass shatterproof laminate having the property of bending by 00 cm.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to vibrations caused by earthquakes by being attached to window glass, glass shelves, glass cases, and other glass products of general households, shops, etc. by utilizing the self-adhesive force of a film. The present invention relates to a glass scattering preventing laminate for preventing glass from scattering when glass is broken by flying objects and the like, and a method for manufacturing the same.

[0002]

2. Description of the Related Art Heretofore, a glass shatterproof film using a film of a vinyl chloride resin, a polyester resin or a polyolefin resin as a base material and having one surface provided with tackiness has been commercially available. However, these glass shatterproof films, unlike stickers, seals, etc., need to be affixed to the entire surface of the glass, and during the affixing operation, air bubbles are likely to enter between the glass and the film, so that the air bubbles are prevented from entering. For this reason, there have been problems such as requiring a great deal of attention and a great deal of time, and making the film unusable due to wrinkling or contamination during the sticking operation.

[0003]

DISCLOSURE OF THE INVENTION The present invention can be easily applied without leaving air bubbles between a substrate film (glass shatterproof film) and a glass surface. There is no peeling of the material film from the glass, and when it becomes necessary to remove the base film from the glass, it can be easily peeled off, and the glass does not become dirty after peeling, and the glass shatterproof laminate and its laminate It is intended to provide a manufacturing method.

[0004]

SUMMARY OF THE INVENTION The gist of the present invention is a laminate comprising a base film having at least one side sticky enough to be attached to glass and a release film laminated on both sides of the base film. The base film is made of a vinyl chloride resin or a polyolefin resin, and the laminate is curved by a curl amount of 10 to 100 cm in a direction opposite to the surface on which the base film is attached to the glass. It exists in a laminated body for preventing glass scattering having properties. Further, the gist of the present invention is that the above-mentioned glass shatterproof laminate in which a contamination prevention layer is formed on the surface of the base film opposite to the surface to be attached to glass, the release film is polyethylene, polypropylene, polyester, acrylic, polyamide Alternatively, the above-mentioned glass shatterproof laminate having a thickness of 5 to 30% of the thickness of the base film, which is made of a vinyl chloride resin, and a laminate obtained by laminating release films on both sides of the base film. In manufacturing, the tensile tension between the unwinding roll and the laminating roll of the release film to be laminated to the surface of the base film to be bonded to the glass, the release to laminate to the surface opposite to the surface to be bonded to the glass Laminating with a tension less than the tension between the film unwinding roll and laminating roll. The production method of the layer body, the unwinding speed of the release film from the unwinding roll to be laminated on the surface of the base film to be bonded to the glass, and the unwinding of the release film to be laminated on the surface opposite to the surface to be bonded to the glass The unwinding speed is higher than the unwinding speed from the roll, and the laminating roll is taken up at a laminating roll speed higher than the unwinding speed of each of the release film and the base film. Take control,
The present invention also resides in a method for manufacturing the above-mentioned laminated body for preventing glass scattering.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail.
In the present invention, a base film made of a vinyl chloride resin or a polyolefin resin is used. The substrate film has at least one surface (a surface to be attached to glass, a surface which becomes convex when measuring curl ("convex side") when a laminate is formed).
Must have such an adhesive property that it can be attached to glass.

The vinyl chloride resin usable in the present invention includes, in addition to a homopolymer of vinyl chloride, a vinyl chloride resin containing vinyl chloride as a main component and other monomers copolymerizable therewith. Resins such as copolymers and mixtures thereof are included. Other monomers copolymerizable with vinyl chloride, for example, ethylene, propylene, acrylonitrile,
Examples include vinyl acetate, maleic acid or its ester, acrylic acid or its ester, and methacrylic acid or its ester. The vinyl chloride resin used in the present invention usually contains a plasticizer. As a plasticizer, dioctyl phthalate (di-2-ethylhexyl phthalate), dibutyl phthalate, diisodecyl phthalate,
Phthalates such as diisononyl phthalate; aliphatic dibasic esters such as dioctyl adipate and dioctyl sebacate; phosphates such as tricresyl phosphate and triaryl phosphate; polyester plasticizers; trimellitic acid Ester plasticizers, epoxy plasticizers and the like can be mentioned, and these can be used alone or in combination of two or more. In general, the adhesive strength between the base film and the glass varies depending on the amount of the plasticizer, so the amount is adjusted according to the required degree of the adhesive strength. Usually, the compounding amount of the plasticizer is 100
It is 30 to 120 parts by weight per part by weight. Further, in addition to the plasticizer, the vinyl chloride-based resin may further contain, if necessary, a stabilizer, a coloring agent, an ultraviolet absorber, a light stabilizer, an antioxidant, and a modifier which are usually added to the vinyl chloride-based resin. Etc. may be blended. Examples of the stabilizer include metal soaps, epoxy compounds, and organic phosphite-based stabilizers. These stabilizers can be used alone or in combination of two or more. Usually, the amount of the stabilizer is 0.5 to 10 parts by weight. As the colorant, an organic pigment, an inorganic pigment, or the like can be blended, and examples thereof include titanium oxide, zinc white, ultramarine, and phthalocyanine blue. These colorants can be used alone or in combination of two or more. Usually, the compounding amount of the coloring agent is 0.01 to 30 parts by weight. Examples of the ultraviolet absorber include a hydroquinone-based compound, a salicylic acid-based compound, a benzophenone-based compound, a benzotriazole-based compound, and a cyanoacrylate-based compound. These ultraviolet absorbers can be used alone or in combination of two or more. Usually, the compounding amount of the ultraviolet absorber is 0.05 to 3.
0 parts by weight. As the light stabilizer, a hindered amine light stabilizer and the like can be blended. Usually, the compounding amount of the light stabilizer is 0.01 to 3.0 parts by weight. As antioxidants,
Examples include phenolic antioxidants, thiodipropionate antioxidants, and aliphatic sulfite antioxidants, and these can be used alone or in combination of two or more. Usually, the compounding amount of the antioxidant is 0.01 to 3.0 parts by weight. Examples of the modifier include ethylene-vinyl acetate copolymer, nitrile-butadiene rubber, urethane resin, cumarone-indene resin, terpene resin, alkylphenol resin, and rosin resin. These modifiers can be used alone or in combination of two or more. Usually, the amount of the modifier is 1 to 100 parts by weight.

Since the adhesive strength between the vinyl chloride resin film and the glass changes depending on the amount of the additive, like the plasticizer, the amount of the additive is adjusted according to the required degree of the adhesive strength. A plasticizer and various additives described above are added to a vinyl chloride resin as needed, mixed with a Henschel mixer or the like, kneaded with a Banbury mixer or the like, and then formed into a film by a calendering method or an extrusion method. Thus, a vinyl chloride resin film that can be used in the present invention is obtained.

The polyolefin resins usable in the present invention include polyethylene resins, polypropylene resins, ethylene-propylene copolymer resins, ethylene-vinyl acetate copolymer resins, ethylene-methyl methacrylate copolymer resins, and the like. Mixtures and the like can be mentioned.
If necessary, the polyolefin-based resin may be blended with an ultraviolet absorber, an antioxidant, a coloring agent, a modifier and the like which are usually used for the polyolefin-based resin. Examples of the ultraviolet absorber include salicylic acid compounds, benzophenone compounds, and benzotriazole compounds. These ultraviolet absorbers can be used alone or in combination of two or more. Usually, the compounding amount of the ultraviolet absorber is 0.05 to 3.0 parts by weight. As antioxidants,
A phenolic antioxidant can be blended. Usually, the compounding amount of the antioxidant is 0.01 to 3.0 parts by weight. As the colorant, an organic pigment, an inorganic pigment, or the like can be blended, and examples thereof include titanium oxide, zinc white, ultramarine, and phthalocyanine blue. These colorants can be used alone or in combination of two or more. Usually, the compounding amount of the colorant is 0.01 to 3
0 parts by weight. Examples of the modifier include an ethylene-vinyl acetate copolymer, a nitrile-butadiene rubber, a polyurethane resin, a coumarone-indene resin, a terpene resin, an alkylphenol resin, and a rosin resin. These modifiers can be used alone or in combination of two or more. Usually, the amount of the modifier is 1 to 100 parts by weight.

Since the adhesive strength between the polyolefin resin film and the glass changes depending on the amount of these additives, the amount is adjusted according to the required degree of adhesive strength. The polyolefin resin is mixed with the various additives described above as necessary, mixed with a Henschel mixer or the like, kneaded with a Banbury mixer or the like, and then formed into a film by a calendar method or an extrusion method. A polyolefin resin film that can be used is obtained.

[0010] The thickness of the base film is 0.02 to 1.0 m
m is preferable, and the adhesive strength between the base film and glass (measured by a method according to the test method described in JIS A 5759 (measured by a method described in Examples)) is 1 to 30 gf / c.
It is preferable that m is because the substrate film is satisfactorily stuck to the glass without peeling. Adhesive strength is 1gf /
When it is less than 30 cm, the substrate film tends to peel off from the glass when the glass is broken, and the effect of preventing glass scattering is not sufficient. It is not preferable because the workability deteriorates, for example, due to close contact or air bubbles easily entering between the glass and the film. As described above, the adhesive strength can be adjusted by the amounts of various additives.

Further, on the base film of the present invention, on the premise that its function is not impaired, the surface of the base film opposite to the surface to be attached to glass (when formed into a laminate, it becomes concave during curl measurement). On the (“concave side”) surface)), a contamination prevention layer for preventing contamination of the base film itself may be laminated. Examples of the resin used for the contamination prevention layer include an acrylic resin, a fluorine resin, a polyurethane resin, a silicone resin, and a polyvinyl alcohol resin.
The contamination prevention layer can be formed by dissolving these resins in a solvent and coating them, or laminating a film made of these resins on a base film. The anti-staining layer may contain a stabilizer, an ultraviolet absorber, an antioxidant, a light stabilizer, a colorant, a modifier and the like, if necessary.

The release film of the present invention comprises polyethylene,
It can be obtained by forming a film of polypropylene, polyester, acrylic, polyamide, vinyl chloride resin or the like by a calender method, an extrusion method, an inflation method or the like. The release film is laminated on both sides of the base film using a laminator or the like. The thickness of the release film is preferably in the range of 5 to 30%, more preferably in the range of 8 to 20% of the thickness of the base film. If the thickness is less than 5%, it is difficult to peel off from the base film, and if it exceeds 30%, the release film becomes too stiff and easily peels off from the base film during lamination.

The glass shatterproof laminate of the present invention (hereinafter, referred to as “laminate”)
It is necessary that the laminate bends (curls) by a specific amount of curl in the direction of the surface opposite to the surface on which the substrate film is attached to the glass. As a method of curling the laminate, for example, when laminating a release film on both sides of the base film, the tensile tension of one of the release films (here, "tensile tension" means that the film is stretched in the longitudinal direction or (Which means the tension applied to the film by pulling in the width direction) is larger than the tensile tension of the other release film, and the distortion of one release film is increased, and lamination is performed. By doing so, the release film having a larger distortion curls toward the release film side (so that the release film side becomes the concave surface of the laminate) in an attempt to eliminate the distortion. More specifically, for example, when laminating the films, the speed of unwinding each release film from the unwinding roll (FIG. 2) is made different from the speed of taking off from the laminating roll (FIG. 2). The tension of the release film with the lower unwinding speed from the unwinding roll increases,
The obtained laminate is curled such that the release film side is the concave surface of the laminate. When laminating both release films, the unwinding speed of the unwinding roll of the base film is preferably set to be slightly lower than the take-up speed from the laminating roll. If the unwinding speed of the unwinding roll of the base film is too low, the tensile stress remaining in the base film increases, and the base film may be shrunk after the release film is peeled off. The curl amount of the laminate according to the present invention refers to a value measured by the curl amount measuring method described below.

Curl Amount Measurement Method A laminate is cut into a size of 400 mm in the length direction and 100 mm in the width direction to prepare a measurement sample. This measurement sample is placed on a horizontal smooth plate having a size of 800 mm in length × 400 mm in width × 2 mm in thickness such that one of the cross sections in the length direction of the laminate comes into contact with the plate surface. At this time, when the laminated body is viewed from the cross-sectional side in the longitudinal direction, it becomes a part of the circumference of a circle having a radius R as shown in FIG. 1. Therefore, a and b shown in FIG. R is obtained, and this is set as a curl amount R (unit: cm). The measurement of a and b is performed on the convex side of the laminate as shown. Further, the plate surface must be smooth enough not to prevent curling of the laminate.

[0015]

## EQU1 ## R = b ² / 2a

In the present invention, R needs to be 10 to 100 cm, and particularly preferably 15 to 70 cm. Even if R is less than 10 cm or more than 100 cm, the workability at the time of attaching the glass deteriorates. The laminate of the present invention is preferably one in which the base film becomes flat when both release films are peeled off from the laminate. Note that the term “flat” here means that when a base film is placed on a horizontal smooth plate such that one surface of the film and the plate surface overlap with each other, the base film is flat and has unevenness. No warpage.

When the laminate of the present invention is used, the release film on the convex side of the laminate is peeled or completely peeled off, and then the substrate film surface after peeling is adhered to glass to remove bubbles and wrinkles. After confirming that there is no release film, the release film on the concave side may be peeled off from the base film. In this way, the base film can be attached to the glass, and the attached base film satisfactorily functions as a glass shatterproof film.

In the laminate of the present invention, since the laminate is curled by a specific curl amount in the direction opposite to the surface on which the base film is attached to the glass, bubbles and wrinkles are generated. The base film can be easily stuck to the glass without any need. Also, since the release film is laminated on both sides of the base film, even after being stored in a wound state,
When rewinding during use, the base films do not stick to each other due to self-adhesion.

[0019]

EXAMPLES The present invention will be described below in detail with reference to examples, but the present invention is not limited to the following examples unless it exceeds the gist thereof.

<Evaluation Test Method> (1) Measurement of curl amount A glass shatterproof laminate (hereinafter referred to as “laminate”) was cut into a size of 400 mm in the length direction and 100 mm in the width direction, and measured. A sample was prepared. This measurement sample was set to a length of 8
The laminated body was placed on a horizontal smooth plate having a size of 00 mm × 400 mm × thickness 2 mm such that one of the cross sections in the length direction of the laminate was in contact with the plate surface. At this time, when the laminated body is viewed from the cross-sectional side in the longitudinal direction, it becomes a part of the circumference of a circle having a radius R as shown in FIG. 1. Therefore, a and b shown in FIG. R was determined, and this was defined as the curl amount R (unit: cm).

[0021]

## EQU2 ## R = b ² / 2a

(2) Peelability of Base Film and Release Film After the laminate was prepared, it was left for one hour, and the presence or absence of peeling of the base film and release film was visually evaluated.

(3) Adhering workability A glass plate having a width of 475 mm x a length of 575 mm x a thickness of 3 mm is placed on a glass plate having a width of 470 mm x a length of 570 mm x a predetermined thickness.
After peeling off the convex release film from the substrate film at room temperature under 1) of the laminate, the base film surface is attached to glass using a hand roller, and then the concave release film is removed from the base film. From the glass and the substrate film was measured until it could be stuck without bubbles. Do the same work with three people, find the average of three people,
The time (second) was taken as the sticking workability.

(4) Glass Scattering Prevention Using a sample in which a substrate film was adhered to a glass plate, the glass scattering prevention was evaluated in accordance with JIS A 5759 B method (interlayer displacement fracture test) (however, The size of the film and the like was as follows). The results were expressed as the glass shatter prevention rate (A).

A = {1− (m ₀ / m)} × 100 A: glass scattering prevention rate (%) m: mass of glass plate before test (g) m ₀ : mass of glass scattered (g) Material film: length 1215 mm x width 910 mm x predetermined thickness (Table 1) Glass plate: length 1219 mm x width 914 mm x thickness 3 m
m The measurement of the glass scattering prevention rate was carried out after the substrate film was stuck and allowed to stand at room temperature for 10 days after sticking.

(5) Adhesive strength Adhesive strength was measured by the method specified in JIS A 5759 adhesive strength test. However, the measurement conditions were as follows. Peeling speed: 100 mm / min Test piece (base film): width 10 mm x length 150 mm
× Specified thickness (Table-1)

The test piece was peeled in a 180 ° direction by a constant-speed extension type tensile tester (Autograph IM100 manufactured by Shimadzu Corporation), and the adhesive strength was measured. The adhesive strength of the same three test pieces was measured, and the average value was determined.

<Example 1> (1) Base film Vinyl chloride resin (degree of polymerization: 1300) 100 parts by weight Dioctyl phthalate (DOP) 60 parts by weight Epoxidized soybean oil 3 parts by weight Ba-Zn based stabilizer 2 parts by weight

The above compound was added to the vinyl chloride resin, mixed with a Henschel mixer, kneaded with a Banbury mixer, formed into a 0.3 mm-thick film with a calendar having a final roll temperature of 170 ° C., and had a tensile modulus of elasticity. (JIS
K 6900) 200 kgf / cm ² substrate film was obtained.

(2) Release Film A thickness of 0.03 mm, tensile modulus of elasticity, manufactured by Tamapoli Co., Ltd.
1900kgf / cm ^Two Low density polyethylene film
Was used as a release film.

(3) Preparation of Laminated Body Using a dry laminator manufactured by Hirano Techseed Co., Ltd., release films were formed on both sides of the base film at a laminating roll speed of 10 m / min and a linear pressure of 10 kg / cm at room temperature. The laminate was curled to R = 15 cm so that the release film 2 side was the concave side of the laminate, and this was subjected to a test. The results are shown in Table 1.

Tensile tension conditions Tensile tension (kg / cm ² ) Unwinding speed from unwinding roll (m / min) Release film 1 19.5 Base film 0.067 9.8 Release film 2 1. 667 8.5

<Example 2> (1) Base film 50 parts by weight of ethylene-vinyl acetate copolymer 50 parts by weight of ethylene-methyl methacrylate copolymer
0.3mm thick film by T-die extruder at 190 ℃
And a tensile modulus of elasticity of 2500 kgf / cm ^TwoBase material
A film was obtained.

(2) Release Film A biaxially stretched polypropylene film having a thickness of 0.04 mm and a tensile modulus of elasticity of 23000 kgf / cm ² manufactured by Tokyo Cellophane Paper Co., Ltd. was used as the release film.

(3) Preparation of Laminated Body Using the laminator apparatus used in Example 1 under the same conditions, release films were laminated on both sides of the base film under the following tensile tension conditions, and the release film 2 side was laminated. Obtain a laminate curled to R = 70 cm so as to be the concave side of the body,
This was subjected to a test. The results are shown in Table 1.

Tensile tension conditions Tensile tension (kg / cm ² ) Unwinding speed from unwinding roll (m / min) Release film 1 2.5 9.7 Base film 0.1 9.7 Release film 2 3.75 9.5

Example 3 (1) Base Film The base film of Example 1 was used. (2) Release Film A biaxially stretched polypropylene film having a thickness of 0.012 mm and a tensile modulus of elasticity of 18000 kgf / cm ² manufactured by Nimura Chemical Industry Co., Ltd. was used as the release film.

(3) Preparation of Laminate Using the laminator apparatus used in Example 1 under the same conditions, release films were laminated on both sides of the base film under the following tensile tension conditions, and the release film 2 side was laminated. To obtain a laminate curled to R = 10 cm so as to be the concave surface of the body,
This was subjected to a test. The results are shown in Table 1.

Tensile tension conditions Tensile tension (kg / cm ² ) Unwinding speed from unwinding roll (m / min) Release film 1 6.667 9.5 Base film 0.067 9.8 Release film 2 10 9.0

Comparative Example 1 (1) Base Film The base film of Example 1 was used. (2) Release Film The release film of Example 1 was used.

(3) Preparation of Laminate Using the laminator apparatus used in Example 1 under the same conditions, release films were laminated on both sides of the base film under the following tensile tension conditions, and the release film 2 side was laminated. The laminate was curled to R = 5 cm so as to be on the concave side of the body, and was subjected to a test. The results are shown in Table 1.

Tensile tension conditions Tensile tension (kg / cm ² ) Unwinding speed from unwinding roll (m / min) Release film 1 19.5 Base film 0.067 9.8 Release film 2 3. 333 8.0

Comparative Example 2 (1) Base Film The base film of Example 1 was used. (2) Release Film The release film of Example 1 was used.

(3) Preparation of Laminate Using the laminator apparatus used in Example 1 under the same conditions, release films were laminated on both sides of the base film under the following tension conditions, and the release film 2 side was laminated. The laminate was curled to R = 110 cm so as to be on the concave side of the body, and was subjected to a test. The results are shown in Table 1.

Tensile tension conditions Tensile tension (kg / cm ² ) Unwinding speed from unwinding roll (m / min) Release film 1 19.5 Base film 0.067 9.8 Release film 2 1. 067 9.3

Comparative Example 3 (1) Base Film The base film of Example 1 was used. (2) Release film Tamapoli Co., Ltd. thickness 0.10mm, tensile modulus
1900kgf / cm ^Two Low density polyethylene film
Was used as a release film.

(3) Preparation of Laminate Using the laminator apparatus used in Example 1 under the same conditions, release films were laminated on both sides of the base film under the following tension conditions, and the release film 2 side was laminated. The laminate was curled to R = 190 cm so as to be on the concave side of the body, and was subjected to a test. The results are shown in Table 1.

Tensile tension conditions Tensile tension (kg / cm ² ) Unwinding speed from unwinding roll (m / min) Release film 1 0.9 9.6 Base film 0.067 9.8 Release film 2 1.3 9.2 (In this laminate, one hour after the production of the laminate, the release film on the concave side of the laminate and the base film are peeled off, and the curl amount immediately after the production of the laminate is maintained. Could not be done.)

<Comparative Example 4> A commercially available glass shatterproof film with an adhesive (Home Glass Mate manufactured by Modern Plastics Industry Co., Ltd.) was used for the test. The results are shown in Table 1. The characteristics of the above commercial products are shown below.

Composition: semi-rigid vinyl chloride film / acrylic adhesive / release paper Total thickness 0.24 mm Base film (semi-rigid vinyl chloride film / acrylic adhesive) 0.15 mm release film (release paper) ) Thickness 0.09mm R = 200cm (Curl is hardly recognized) <Evaluation result>

[0051]

[Table 1] * 1 Indicates the ratio (%) of the thickness of the release film to the base film.

[0052]

Industrial Applicability The glass shatterproof laminate of the present invention enables a base film (glass shatterproof film) to be stuck to a glass surface in a short time without generating bubbles or wrinkles. The film has excellent glass shatterproof properties.

[Brief description of the drawings]

BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a diagram showing a state in which a laminate is placed on a horizontal smooth plate such that one of the cross sections in the length direction of the laminate is in contact with a plate surface in measuring a curl amount. Cross section side)
FIG.

FIG. 2 is a schematic view illustrating a state of manufacturing a laminate using a laminator.

[Explanation of symbols]

D laminate A one end of the laminate C the other end of the laminate O center of a circle with arc AC B point on arc AC tangent A to arc AC at EB A 'perpendicular to tangent E from A A) AA 'length b AB length R Curl amount (radius of circle having center O and arc AC) F, G, H, I Vertex of horizontal smooth plate α ゜ angle 1/2 of AOB angle 1 Laminating roll 2 Unwinding roll 3 Release film 4 Base film

Continued on the front page (72) Inventor Keiji Tanaka 2nd Oike, Iwatsuka-cho, Nakamura-ku, Nagoya-shi, Aichi Prefecture Mitsubishi Chemical MKV Corporation Nagoya Office

Claims (5)

[Claims] Claims 1. At least one side of a base film having such adhesiveness that at least one side can be attached to glass,
A laminate in which a release film is laminated, wherein the base film is made of a vinyl chloride resin or a polyolefin resin, and the laminate has a surface opposite to a surface on which the base film is attached to glass. Direction, the curl amount is 10 to 1
A glass shatterproof laminate having the property of bending by 00 cm. 2. The glass shatterproof laminate according to claim 1, wherein a contamination prevention layer is formed on the surface of the base film opposite to the surface to be attached to the glass. 3. The release film according to claim 1, wherein the release film is made of polyethylene, polypropylene, polyester, acrylic, polyamide or vinyl chloride resin, and the thickness thereof is 5 to 30% of the thickness of the base film. The laminated body for preventing glass scattering as described in the above. 4. When a release film is laminated on both sides of a base film to produce a laminate, an unwinding roll and a laminating roll of the release film to be laminated on a surface of the base film to be attached to glass. 2. The laminating method according to claim 1, wherein the laminating is performed by setting the tensile tension between the laminating roll and the unwinding roll of the release film to be laminated on the surface opposite to the surface to be attached to the glass to be smaller than the tensile tension. A method for producing a laminated body for preventing glass scattering. 5. A release film unwinding roll for laminating a release film to be laminated to a surface of a base film to be bonded to glass, the unwinding speed of the release film being unlaminated to a surface opposite to the surface to be bonded to the glass. Control of the tensile tension by laminating at a speed higher than the unwinding speed from the laminating roll and at a laminating roll with a laminating roll take-up speed higher than each of the release speeds of the release film and the base film. The method for producing a laminated body for preventing glass scattering according to claim 4, wherein the method is performed.