JPH0740764A - Laminate for laminated glass with hologram layer - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a laminated body for a laminated glass for enclosing a hologram layer, which is used in the production of a laminated glass for enclosing a hologram layer, and which has excellent lamination accuracy of optical thin films and excellent work efficiency. With the goal. A laminate for laminated glass for enclosing a hologram layer of the present invention comprises: a hologram layer / on at least one glass plate.
A laminate used in the production of a hologram layer-encapsulated laminated glass in which a plasticizer barrier layer / a synthetic resin layer containing a plasticizer is laminated in this order, the laminate comprising a first carrier film 1, a hologram layer 3, The plasticizer barrier layer 5 and the second carrier film 7 are sequentially laminated, and the hologram layer and the plasticizer barrier layer have the same laminated area, or the laminated areas of the plasticizer barrier layers are the same. The size of the hologram layer surface, excluding the surface to which it adheres to the glass plate, is set so that it can be covered by the heat-pressing operation during glass production. Both carrier films are peeled off and used.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated body used for producing a laminated glass in which a hologram is enclosed, and more particularly to a combiner for a head-up display for automobiles, a heat ray reflection film for a window glass of a building and the like. Relates to a laminated body which enables accurate and efficient production of laminated glass useful for the above-mentioned uses.

[0002]

2. Description of the Related Art In recent years, holograms have come to be widely used for decoration, forgery prevention, optical elements, etc., and particularly recently, volume phase type (excellent in wavelength selectivity and stereoscopic effect) Lippman type) holograms are drawing attention.

For example, the hologram combiner is one optical element, and its function can be said to be a semi-transmissive imaging element. FIG. 13A is a diagram for explaining the photographing method, in which the light oscillated from the laser 20 is divided into two by the half mirror 21 and each laser light is divided into the lens 2 by the lens 2.
The holographic combiner is a holographic combiner in which the divergent light emitted from one point is changed at 2 and 23, and these two divergent lights are made incident from both sides of the volume phase hologram recording material 3 ′ such as a photopolymer to interfere as a Lippmann hologram.

Such a hologram combiner 3 is
As shown in (b) of the figure, light emitted from the display body 25 installed near one of the divergence points at the time of photographing is diffracted in the reflection direction,
The diffraction image is performed as if it came out from the image 25 'of the display body installed near the other divergent point at the time of shooting.
The imaging magnification and the image position are determined by the relative distances L and L ′ between the divergence point at the time of photographing and the recording material, and only the wavelength at the time of recording or the wavelength having a specific relationship with it is diffracted, Since light of other wavelengths is transmitted, the images can be superimposed or combined. As an optical element represented by such a hologram combiner, there is a combiner for head-up display and the like.

In particular, when it is used in the form of laminated glass for automobile applications, it must satisfy Japanese Industrial Standards for automobile safety glass (JIS 3211, 3212). According to the JIS term, "laminated glass is made by adhering two or more flat glass sheets with plastic as an intermediate film, which prevents most of the fragments from scattering due to the intermediate film even if they are damaged by the action of external force. The polyvinyl butyral film is usually used as an intermediate film of plastics.

In the case of enclosing a hologram as a combiner for head-up display in such a laminated glass, a structure of plate glass / hologram / polyvinyl butyral film / plate glass is used, and pre-compression bonding is performed by pressing with a roller or the like. After that, it is manufactured by heating at about 130 ° C., pressurizing and main-pressing, and the hologram laminated side is used as the vehicle interior side and the polyvinyl butyral film laminated side is used as the vehicle exterior direction.

However, in this layer structure, since the hologram and the polyvinyl butyral film are in direct contact with each other, tetraethylene glycol.n-heptanate, di- (n-hexyl) adipate, tri-titanium contained in the polyvinyl butyral are contained. Ethylene glycol di- (2-
When a plasticizer such as ethyl butyrate) permeates into the structure of the hologram, the structure of the interference fringes is disturbed and the characteristics of the structure change over time, resulting in deterioration of image quality. By interposing it between the hologram layer and the polyvinyl butyral layer, penetration of the plasticizer into the hologram is prevented. However,
In the past, the hologram layer and the plasticizer barrier layer were laminated manually by registering them, but both the hologram layer and the plasticizer barrier film are extremely thin and, because of the optical thin film, the lamination is performed. In that case, there is a problem that high precision is required and it is difficult to perform high quality lamination.

[0008]

DISCLOSURE OF THE INVENTION The present invention provides a laminated body for a laminated glass for enclosing a hologram layer, which is used in the production of a laminated glass for enclosing a hologram layer and which has excellent lamination accuracy of optical thin films and excellent work efficiency. It is an issue.

[0009]

The first hologram layer-enclosed laminated glass laminate of the present invention comprises a hologram layer / a plasticizer barrier layer / a synthetic resin layer containing a plasticizer in this order on at least one glass plate. Which is used in the manufacture of a laminated glass for enclosing a hologram layer, wherein the laminated body comprises a first carrier film, a hologram layer, a plasticizer barrier layer and a second carrier film, which are sequentially laminated. That is, the hologram layer and the plasticizer barrier layer have the same laminated area, or the laminated area of the plasticizer barrier layer is such that the adhesive surface with the glass plate is removed by the thermocompression bonding operation during the production of laminated glass. The size is set so that it can cover the entire circumference of the hologram layer surface, and a part of both carrier films is peelably bonded from both carrier films. Wherein the film is intended to be used by being peeled off.

The second hologram layer-enclosed laminated glass laminate of the present invention is a hologram layer in which a hologram layer / a plasticizer barrier layer / a synthetic resin layer containing a plasticizer are laminated in this order on at least one glass plate. A laminated body used in the production of encapsulated laminated glass, the laminated body comprising a first carrier film, a hologram layer, a plasticizer barrier layer, and a second carrier film.
A carrier film is sequentially laminated, and the hologram layer and the plasticizer barrier layer have the same laminated area, or the laminated area of the plasticizer barrier layer is a thermocompression bonding operation at the time of producing a laminated glass, The hologram carrier has a size that enables it to cover the entire circumference of the surface of the hologram layer excluding the bonding surface with the glass plate, and is peelably bonded to a part of the second carrier film, and the first carrier film is the same as the hologram layer. It is characterized in that it is adhered in a peelable manner in a laminated area and both carrier films are peeled off and used.

The laminated body for laminated glass containing the second hologram layer has a recording material layer having a hologram layer on the first carrier film, a plasticizer barrier layer forming material layer, and a second carrier layer.
It is formed by half-cutting a laminated structure composed of a carrier film, a first carrier film, a hologram layer, and a plasticizer barrier layer, or a first carrier film in the laminated structure,
It is obtained by half-cutting the hologram layer.

The third hologram layer-encapsulated laminated glass laminate of the present invention is obtained by laminating a hologram layer / a plasticizer barrier layer / a synthetic resin film containing a plasticizer in this order on at least one glass plate. A laminated body used for manufacturing a laminated glass containing a hologram layer, wherein a hologram layer is releasably laminated on a part of a first carrier film, and a plasticizer barrier layer is partly formed on a second carrier film. And the hologram layer and the plasticizer barrier layer have the same laminated area, or the laminated area of the plasticizer barrier layer is a It is of a size that can cover the entire circumference of the hologram layer surface excluding the adhesive surface to the plate, and can be used by peeling and removing the carrier film. And characterized in that.

In the third laminated body for laminated glass for enclosing a hologram layer, the hologram layer and the plasticizer barrier layer are:
It is characterized by being formed by half-cutting a recording material layer having a hologram layer on the first carrier film and a plasticizer barrier layer forming material layer on the second carrier film.

Further, in this third laminated body for laminated glass for enclosing hologram layers, the surfaces of the hologram layer and the plasticizer barrier layer are each covered with a peelable protective layer, and the protective layer is peeled off before use. It is characterized by being one.

First, the hologram layer-encapsulated laminated glass in the present invention is not limited to the above-mentioned automobile hologram layer-encapsulated laminated glass, and for example, glass / hologram / plasticizer barrier layer / plasticizer-containing synthetic resin film, glass / Applicable to laminated glass having a laminated structure of hologram / plasticizer barrier layer / synthetic resin film containing plasticizer / glass, glass / hologram / plasticizer barrier layer / synthetic resin film containing plasticizer / glass / synthetic resin film, etc. You can

Next, a laminate common to the laminates of the present invention will be described with reference to FIG. Figure 1
[FIG. 3] is a diagram for explaining a first laminated body for laminated glass for hologram encapsulation of the present invention, in which 1 is a first carrier film, 2 is a first adhesive layer, 3 is a hologram, and 4 is a second adhesive. Agent layer, 5 is a plasticizer barrier layer, 6 is a third adhesive layer, and 7 is a second carrier film.

As the first or second carrier film, a polyethylene (PE) film, a uniaxially stretched polyethylene film, a biaxially stretched polyethylene film, a stretched polypropylene (OPP) film, a non-stretched polypropylene (CPP) film, ethylene / vinyl acetate. Copolymer (EVA) film, ionomer film, ethylene / ethyl acrylate copolymer (EEA) film, ethylene / acrylic acid copolymer (EAA) film, ethylene / methacrylic acid copolymer (EMAA) film, ethylene / methyl Methacrylate copolymer (EMMA) film, ethylene-methyl acrylate copolymer (EM
A) film, polyester film, nylon film, triacetyl cellulose film, ethylene / vinyl alcohol copolymer (EVOH) film, polyvinylidene chloride (PVDC) film, biaxially oriented polyvinylidene chloride film, polyvinylidene fluoride film, polyacrylonitrile (PAN) film, polybutylene terephthalate (PBT) film, polyethylene terephthalate (PET) film, polyethylene naphthalate (PEN) film, amorphous polyethylene terephthalate (A-PET) film, polystyrene film, polyvinyl chloride film, polyvinyl alcohol film, Polycarbonate (PC) film, polymethylmethacrylate (PMMA) film, polyurethane film, film Containing resin film, a polymethylpentene film, a polybutene film, a polyimide film, polyarylate film, and the like. Various coextruded films can also be used. These carrier films are required to have supportability as a laminate and have a film thickness of 1 μm.
˜500 μm, preferably 10 μm to 100 μm. Further, the carrier film is removed by peeling off the carrier film when using the laminated body for hologram-encapsulated laminated glass of the present invention, and the laminated surface of the carrier film may be subjected to a peeling treatment with a silicone resin or the like. Also,
From the viewpoint of workability, the peeling forces on the respective laminated surfaces of the first and second carrier films may be different.

Next, as the hologram layer 3, a known hologram recording material such as silver salt, dichromated gelatin or photopolymer can be used as a recording material.
When it is enclosed in a laminated glass composed of a laminate of glass / hologram / plasticizer barrier layer / plasticizer-containing synthetic resin film / glass, a volume-type and phase-type hologram may be used, especially a wet development process. Photopolymers that do not require are preferred. Examples of the photopolymer include acrylic resin-based photopolymers.

The hologram layer may be laminated after recording the hologram on the recording material layer, but the hologram recording may be performed after the unrecorded recording material layer is used to form the laminate of the present invention. Alternatively, hologram recording may be performed on the recording material layer at any stage of the laminating process to form the hologram layer.

The size of the hologram layer can be appropriately selected according to the application, but in this first laminated body for laminated glass for enclosing a hologram layer, an unrecorded portion having a width of 1 cm to 5 cm is provided around the hologram layer. By forming the, the deterioration of the hologram due to the permeation of the plasticizer from the end can be prevented.

Next, the plasticizer barrier layer 5 is for preventing the plasticizer in the synthetic resin film containing the plasticizer, which will be described later, from penetrating into the hologram, and it is preferable that the plasticizer barrier layer 5 itself does not contain the plasticizer. . Further, when the laminated body of the present invention is used to form a laminated glass, it is heated and pressure-bonded, but the plasticizer barrier layer is preferably one having uniform heat shrinkage and little, and isotropic extension. In particular, it is preferable that the shrinkage factor at the time of heating at 100 ° C. is 2 to 5% or less because thermal distortion does not occur in the hologram. Especially, if the extension factor is adjusted so as to shrink like the hologram, the hologram diffraction The lattice is unlikely to generate strain due to the difference in heat shrinkage between the lattice and the plasticizer barrier layer.

In order to form such a plasticizer barrier layer, for example, polyvinyl alcohol (saponification degree of about 100) is used.
%) An aqueous solution is directly applied onto the hologram layer and dried, and then the film thickness is 0.1 μm to 100 μm, preferably 1 μm to 10 μm.
It is good to Further, an ethylene-vinyl acetate copolymer film (film thickness 0.1 μm to 100 μm, preferably 10
[mu] m to 100 [mu] m) may be laminated using the second adhesive layer, and film-shaped ones such as polyethylene terephthalate and polyvinyl chloride may be laminated, and a layer may be formed by a method such as coating. May be. If the thickness of the plasticizer barrier layer is large, the end parting is conspicuous. Therefore, the total thickness of the hologram layer and the plasticizer barrier layer is preferably 50 μm or less, and 25 μm from the perspective of perspective distortion. The following are preferred. In addition, the plasticizer barrier layer has a visible light transmittance of 90 at 400 to 780 nm.
% Or more and haze of 1% or less is preferable.

Next, the adhesive layer will be described. In the case where the first adhesive layer 2, the second adhesive layer 4, and the third adhesive layer are in contact with the hologram layer, an adhesive containing no plasticizer may be used to form the adhesive layer. The film thickness is set to 0.1 μm to 10 μm. Further, the optical characteristics of the adhesive layer are 400 to 7 as in the plasticizer barrier layer.
It is preferable that the visible light transmittance at 80 nm is 90% or more and the haze is 1% or less. When the hologram layer 3 and the plasticizer barrier layer 5 have adhesiveness by themselves, these adhesive layers can be omitted.

As such an adhesive, a natural rubber type,
Recycled rubber-based, chloroprene rubber-based, nitrile rubber-based, styrene-butadiene rubber-based, thermoplastic elastomer-based elastomer adhesives, epoxy resin-based, polyurethane-based synthetic resin-based adhesives, reactive acrylic-based adhesives,
Chemical reaction type adhesive such as cyanoacrylate, etc.,
UV curable adhesives, EB curable adhesives, hot melt adhesives such as ethylene / vinyl acetate copolymer resin hot melt adhesives, polyamide adhesives, polyester adhesives, thermoplastic elastomer adhesives, reactive hot melt adhesives, etc. Examples include water-soluble adhesives such as water-soluble adhesives, emulsion adhesives, latex adhesives, and inorganic adhesives. As a method for adhering the same, a thermoplastic resin may be sandwiched between the laminates and heated to a temperature equal to or higher than the softening point.
The B-curable type may be sandwiched between the laminates and irradiated with ultraviolet rays or electron beams to be cured, and the adhesive type may be simply sandwiched between the laminates and cured.

Next, a method for manufacturing the first laminated hologram laminated glass laminate shown in FIG. 1 will be described. Figure 4
6A to 6C are views for explaining a method for manufacturing the laminate shown in FIG. 1, in which 2'is a first adhesive coating layer and 3 '.
Is a recording material layer with or without hologram recording, 4 '
Denotes a second adhesive coating layer, 5'denotes a plasticizer barrier layer, 6'denotes a third adhesive coating layer, and the same symbols as those in FIG. 1 indicate the same contents.

First, as shown in FIG. 4 (a), a third adhesive layer coating layer 6 ', a plasticizer barrier layer 5', and a second adhesive are formed on the surface of the second carrier film 7 whose surface has been subjected to a release treatment. After sequentially forming the layer coating layers 4 ', the second adhesive film 4 is formed by leaving the second carrier film 7 as shown in the cross section in FIG. 2B and the plane in FIG. ', The plasticizer barrier layer coating layer 5', and the third adhesive coating layer 6'are half-cut to obtain a laminate 15. Half cutting can be performed by using a sharp blade, and may be performed by a known cutting device.

Further, as shown in FIG. 5 (d), the first carrier film 1 whose surface has been subjected to a peeling treatment is provided separately on the first surface.
After the adhesive coating layer 2'and the recording material layer 3'on which holograms are recorded or not recorded are sequentially formed, a cross section is shown in FIG. 8E and a plane is shown in FIG. First
The first adhesive coating layer 2 ′ and the recording material layer 3 ′ are similarly half-cut while leaving the carrier film 1 to obtain a laminate 16. At that time, the laminated area of the hologram layer 3 is half-cut so as to be the same as the laminated area of the plasticizer barrier layer 5.

Next, the laminated body 15 shown in FIG. 6 (b) and the laminated body 16 shown in FIG. 6 (e) are laminated as indicated by the arrows, and the first hologram layer of the present invention shown in FIG. A laminated body for enclosed laminated glass can be manufactured. Note that FIG. 6G is a conceptual view of the first hologram layer-encapsulated laminated glass laminate seen from a plane, and the dotted line portion shows the laminate sandwiched between both carrier films.

Next, another embodiment of the first laminated hologram laminated glass laminate of the present invention will be described with reference to FIG. The laminated body shown in FIG. 2 is obtained by laminating the hologram layer 3 with a smaller laminated area than the plasticizer barrier layer 5 in the laminated body shown in FIG. The relationship with the agent barrier layer 5 is set so that the plasticizer barrier layer 5 covers the entire circumference of the laminated glass except the contact portion with the glass 8, as shown in FIG. 12 described later. To be done.

In this laminate, since the hologram layer 3 including its end portion is covered with the plasticizer barrier layer 5, it is possible to prevent penetration of the plasticizer from the synthetic resin film containing the plasticizer. The unrecorded part in the hologram layer 3 required in the laminated body for laminated glass for enclosing hologram layer shown in FIG. 1 can be eliminated. In general, when there is an unrecorded portion around the hologram, whitening phenomenon (haze) and yellowing phenomenon (yellowness) occur, and the hologram portion, unrecorded portion,
The glass part has a triple structure, which causes an unfavorable problem, but it is not necessary to leave an unrecorded part in this laminate.
For example, it can be sealed without noise in the windshield of an automobile or the like.

As a manufacturing method, as shown in FIG. 7, it is formed in the same manner as the laminated body shown in FIG. 1 except that the relationship of the laminated area of the hologram layer 3 and the plasticizer barrier layer 5 is set as described above. To be done. That is, the laminated body 15 shown in FIG.
And a laminated body 16 shown in FIG. 8E 'can be laminated to form another laminated body for laminated glass for enclosing a first hologram layer. The figure (g) 'is a conceptual view of this laminate as seen from above, and the dotted line shows the state of the laminate sandwiched between both carrier films.

Since the hologram layer and the plasticizer barrier layer are laminated in one set between both carrier films in the first laminated body for laminated glass for enclosing hologram, positioning is performed when the hologram is enclosed in laminated glass. There is no need for the like, and it can be easily attached.

Next, the laminated body for laminated glass containing the second hologram layer will be described. This stack is shown in FIG. 3, and the stack is the same as that in the first stack described above. This second laminated body has the same laminated constitution as the laminated body shown in FIG. 1, but differs in the laminated area of the first carrier film.

FIG. 8 is a diagram showing an example of a method for manufacturing this laminated body. In FIG. 8, 1'is the same as in FIGS. 4 and 5 except that the first carrier film having the same laminated area as the hologram layer 3 is shown. The same reference numerals as those of the laminate indicate the same contents.

As shown in FIG. 8 (a), this laminate comprises a first carrier film 1, a first adhesive layer coating layer 2 ', a hologram-recorded or unrecorded recording material layer 3', and a second adhesive layer. Agent layer coating layer 4 ', plasticizer barrier layer forming material layer 5', third
After the adhesive layer coating layer 6 ′ and the second carrier film 7 are laminated in this order, the second carrier film to the first carrier film, the first adhesive coating layer, the hologram-recorded or unrecorded recording material layer, The second adhesive coating layer, the plasticizer barrier layer forming material layer, and the third adhesive coating layer are half-cut to obtain a second hologram layer-encapsulated laminated glass laminate shown in FIG. In the above aspect, the first carrier film may be left and the other laminated structures may be similarly half-cut.

Further, as another aspect of the second laminated body, although not shown, the second laminated body in FIG.
2 shows the relationship between the laminated area of the first carrier film 1'and the hologram layer 3 and the laminated area of the plasticizer barrier layer 5, the hologram layer 3 and the plasticizer barrier in the first laminated body shown in FIG. The relationship with the laminated area of the layer 5 may be similar. As a manufacturing method, the first carrier film 1'and the hologram layer 3 may be further half-cut in the second laminated body in FIG. 8B, and the half-cut first carrier film 1 ' And a hologram layer 3, and FIG. 8B.
The laminated body consisting of the second carrier film 7, the third adhesive layer 6, the plasticizer barrier layer 5, and the second adhesive layer 4 shown in FIG. May be formed by laminating in the same manner as in the laminated body shown in FIG. This mode exhibits the same effect as described in the section of the laminated body shown in FIG.

Next, the third hologram layer-encapsulated laminated glass laminate of the present invention will be described. This stack is
A combination of two kinds of laminated bodies, that is, the laminated body 15 shown in FIG. 6B and the laminated body 16 shown in FIG. 6E described in the section of the first laminated body for laminated glass for laminated hologram layer. Thus, the respective carrier films are peeled off, and the hologram layer 3 and the plasticizer barrier layer 5 can be individually sealed in the laminated glass.

Another embodiment of this laminate is shown in FIG.
A combination of the laminated body 15 shown in (b) 'and the laminated body 16 shown in (e) of the same drawing may be combined. In this case, the relationship between the laminated areas of the plasticizer barrier layer and the hologram layer will be described with reference to FIG. It is similar to that.

The form in which the hologram layer and the plasticizer barrier layer are laminated in the laminated glass using the third laminate is the same as that shown in FIGS. 1 and 2, respectively. The alignment of the plasticizer barrier layer and the hologram layer can be easily performed by coding the respective carrier films.

The two kinds of laminated bodies in the third laminated body are used as protective layers on the surfaces of the plasticizer barrier layer 5 in the laminated body 15 and the hologram layer 3 in the laminated body 16 until the laminated glass is manufactured. , For example, polyethylene terephthalate film, polypropylene film, polyethylene film, Teflon (trade name) film, polyvinylidene fluoride film, polyvinyl chloride film,
Polyvinylidene chloride film, various release treatment films,
Further, if a release-treated paper or the like is attached, it becomes suitable for protection of the hologram layer during half-cutting work, storage stability, scratch resistance, and transportability.

Next, a method for producing a hologram layer-enclosed laminated glass using the hologram layer-enclosed laminated glass laminate of the present invention will be described. FIG. 9 shows a method for producing a laminated glass composed of glass / hologram layer / plasticizer barrier layer / synthetic resin film containing a plasticizer / glass using the first laminate for laminated glass for inclusion of hologram layer of the present invention. It is a figure for explaining, and in the figure, 8 and 10 are glass, 9
Is a synthetic resin film containing a plasticizer, and the same symbols as in FIG. 1 indicate the same contents. As shown in FIG. 9, one or both of the carrier films in the first laminate are peeled off and adhered onto the glass from the hologram layer 3 side, and then the synthetic resin film 9 containing the plasticizer and the glass 10 are sequentially placed. Overlap, 130 ℃ ~ 150 ℃ in an autoclave, pressure 1 Kg / cm ² or more,
It is advisable to stack the layers for 30 to 60 minutes. The laminated state is shown in FIG.

FIG. 10 shows the case where the laminated body shown in FIG. 2 which is another embodiment is used. A laminated glass is obtained in the same manner as above, and its state is shown in FIG. Note that FIG.
1, the arrow 11 in FIG. 12 shows the exterior direction when this laminated glass is used for an automobile.

When the second laminated body for laminated glass for enclosing a hologram layer of the present invention is used, it is the same as that of the first one. In the case of the third laminated body for laminated hologram laminated glass, first, the laminated body 16 shown in FIG. 6 is peeled and removed in the case of having a release paper, and then laminated on the glass 8 from the hologram layer side. , Remove the carrier film.
Next, after peeling and removing the laminate 15 shown in FIG. 7B when the release paper is provided, after aligning and adhering to the hologram layer from the plasticizer barrier layer side, the carrier film is peeled and removed. The synthetic resin film 9 containing the plasticizer and the glass 10 may be stacked and stacked under the same conditions as described above.

[0044]

In the laminated body for laminated glass containing the first to third hologram layers of the present invention, since the hologram layer and the plasticizer barrier layer are carried on the carrier film,
When sticking to the glass surface, the high adhesion precision required for optical thin films can be efficiently obtained, and automation is also possible. In addition, in particular, the first and second shown in FIGS.
In the laminated body of 1, since the hologram layer and the plasticizer barrier layer are laminated between the carrier films in one set, there is no need to position the plasticizer barrier layer when enclosing the hologram in the laminated glass. Also, higher adhesion accuracy can be obtained.

Further, in the laminated body for laminated glass containing the first to third hologram layers, another embodiment in which the laminated area of the hologram layer is smaller than the laminated area of the plasticizer barrier layer is an unrecorded portion in the hologram layer. Since it is not necessary to provide the hologram layer, it is possible to prevent the hologram portion, the unrecorded portion, and the glass portion from being triple-structured due to a whitening phenomenon (haze), a yellowing phenomenon (yellowness), etc. Can be enclosed laminated glass. Hereinafter, the present invention will be described with reference to examples, but the present invention is not limited thereto.

[0046]

[Example 1] A polyurethane adhesive (made by Asahi Denka Kogyo Co., Ltd., made by Adeka BonTiter HUX232) on a polyethylene terephthalate film (made by Toray Co., Ltd., made by Lumirror T60, film thickness 50 μm) having a width of 300 mm. Was applied at a dry film thickness of 1 μm, and then a 10% aqueous solution of polyvinyl alcohol (Nippon Gosei Kagaku KK, Gohsenol NM-11, saponification degree 100%) was applied on the adhesive layer to give a dry film thickness of 5 μm. Was provided with a plasticizer barrier layer. Then, on the plasticizer barrier layer, 25 parts by weight of a polyurethane adhesive (same as above) and polyvinyl alcohol (same as above) 7
A 5% aqueous solution of a mixture of 5 parts by weight was dried to a film thickness of 1 μm.
To obtain a laminate. Then, a 220 mm × 220 mm square cut is made in the plasticizer barrier layer in the obtained laminate, and the portion other than the square is peeled off from the polyethylene terephthalate film to obtain a laminate A having a square plasticizer barrier layer. Got

On the other hand, a polypropylene film having a width of 300 mm (manufactured by Toyobo Co., Ltd., trade name: Pyrene film-O)
UV curing type adhesive (trade name: Wordlock XV, manufactured by Kyoritsu Chemical Industry Co., Ltd.) on T P2002, film thickness 50 μm)
L-0 9) was applied at a dry film thickness of 1 μm, and then a recorded hologram (film thickness of 15 μm) using an acrylic resin photopolymer as a recording material was adhered onto the adhesive layer, and further onto the hologram layer. A peeled polyethylene terephthalate film was laminated as a carrier film and irradiated with ultraviolet rays at 100 mJ / cm ² to obtain a laminate B.
Then, in the obtained laminate, the polyethylene terephthalate film is left, and the polypropylene film and the hologram layer are cut into a 220 mm × 220 mm square shape, and a portion other than the square is peeled and removed to form a laminate having a square hologram layer. Body B is obtained. As the hologram layer, an unrecorded portion was left in the periphery of 20 mm.

Then, on a 2 mm thick clear glass plate,
Peel off the polypropylene film in the laminate B,
The laminate B was laminated from the hologram layer side, the polyethylene terephthalate film was then peeled off, and the laminate A was laminated from the plasticizer barrier layer so as to correspond to the hologram layer, and then the polyethylene terephthalate film was peeled off. By laminating each of the laminated bodies, the optical thin film can be laminated accurately and easily.

Then, a polyvinyl butyral film having a thickness of 750 μm was laminated on the peeled surface, and a clear glass plate having a thickness of 2 mm was placed on the peeled surface and placed in an autoclave.
The hologram was enclosed between two glass plates at 0 ° C. and a pressure of 5 kg / cm ² .

The obtained laminated glass is good, and by using the third laminated body for laminated hologram for laminated glass of the present invention, laminated glass can be efficiently produced.

[0051]

Example 2 In the manufacturing process of the laminated body B of Example 1,
220mm x 22 for polyethylene terephthalate film and hologram layer, leaving polypropylene film
A laminate B'having a square hologram layer, in which a cut is made in a square shape of 0 mm and the portion other than the square is peeled and removed.
Got As the hologram layer, an unrecorded portion was left in the periphery of 20 mm.

After removing the polyethylene terephthalate film in the layered product B ', the layered product A in Example 1 is laminated from the plasticizer barrier layer side so as to correspond to the laminating position of the hologram layer. A laminated body for laminated glass containing 1 hologram layer was obtained.

To obtain a laminated glass by using the first hologram layer-enclosed laminated glass laminate of the present invention,
As shown in FIG. 9, first, the polypropylene film on the hologram layer side of the laminate was peeled and removed, and then laminated on clear glass, and then the surface layer of polyethylene terephthalate film was removed, followed by polyvinyl butyral film and clear glass. Were laminated, and a laminated glass was produced in the same manner as in Example 1.

A laminated glass similar to that described above could be produced, and further, alignment of the hologram layer and the plasticizer barrier layer was not necessary at the time of producing the laminated glass, and the glass could be easily produced.

[0055]

[Example 3] In the laminate B of Example 1, the polyethylene terephthalate film was left and the polypropylene film and the hologram layer were 200 mm x 200 m.
A square was cut into a square m, and a portion other than the square was peeled off to obtain a laminate C having a square hologram layer. As the hologram layer, no unrecorded portion was left in the periphery, and only the recording layer was left.

The laminate C thus obtained was used in Examples 1 and 2.
7B is used instead of the respective laminated bodies B in FIG. 7, and the third laminated body for laminated glass for hologram layer shown in FIGS. A first hologram layer-encapsulated laminated glass laminate shown in FIG. 2 was produced and used in the same manner as in Example 1 and Example 2 to produce the laminated glass shown in FIG. The manufacturing process of laminated glass using the laminated body shown in FIG. 2 is shown in FIG.

The obtained laminated glass had no noise such as haze and yellowness due to the hologram non-recording layer as compared with the laminated glass obtained in Example 1.

[0058]

[Example 4] A polypropylene film having a width of 300 mm, whose surface is exfoliated with silicone (manufactured by Panac Co., Ltd., trade name OPP # 40 red silicon, film thickness 40μ)
m), an acrylic adhesive (manufactured by Nippon Shokubai Co., Ltd., trade name Polyment KX-CK200) was applied at a dry film thickness of 2 μm, and then an acrylic resin photopolymer was used as a recording material on the adhesive layer. Pre-recorded hologram (film thickness 20
μm) was adhered. In addition, as the hologram layer, the periphery 20
The unrecorded area was left in mm.

Then, a polyurethane adhesive (same as above) was applied on the hologram layer in a dry film thickness of 1 μm, and then a 10% aqueous solution of polyvinyl alcohol (saponification degree 100%) was applied, and a plasticizer in a dry film thickness of 5 μm. A barrier layer is provided, and a polyurethane adhesive (made by Asahi Denka Co., Ltd., trade name ADEKA BONTITER HUX575) is dried to a film thickness of 1 μm.
The surface of the polyethylene terephthalate film having a width of 300 mm is peeled off with silicone (Toray Industries, Inc., trade name Lumirror S10, film thickness 25 μ)
m) was laminated to obtain a second hologram layer-encapsulated laminated glass laminate of the present invention.

A 220 mm × 220 mm square cut is made in the laminated structure consisting of a polypropylene film, a hologram layer and a plasticizer barrier layer in this laminate, and the parts other than the square are peeled off from the polyethylene terephthalate film to remove the square shape. Polypropylene film,
The laminated body shown in FIG. 3 comprising a hologram layer and a plasticizer barrier layer was obtained.

After the polypropylene film in this laminate was peeled off and removed, in the same manner as in the first hologram layer-enclosed laminated glass laminate of the present invention in Example 1,
A laminated glass was produced in the same manner as in Example 1.

The laminated glass thus obtained was the same as in Example 1.

[Brief description of drawings]

FIG. 1 is a diagram for explaining a first hologram-encapsulated laminated glass laminate of the present invention.

FIG. 2 is a diagram for explaining another aspect of the first hologram-encapsulated laminated glass laminate of the present invention.

FIG. 3 is a diagram for explaining a third hologram-encapsulated laminated glass laminate of the present invention.

FIG. 4 is a diagram for explaining a part of the method for manufacturing the first hologram-encapsulated laminated glass laminate of the present invention.

FIG. 5 is a diagram for explaining a part of the method for producing the first hologram-encapsulated laminated glass laminate of the present invention.

[Fig. 6] Fig. 6 is a diagram for explaining a method for manufacturing a first laminated body for laminated glass for hologram encapsulation of the present invention, and Figs. 6 (b) and (e) show the third laminated hologram for encapsulation of hologram of the present invention. It is a figure for demonstrating the laminated body for glass.

FIG. 7 is a diagram for explaining a method for producing a first hologram-encapsulated laminated glass laminate of the present invention, in which (b) ′ and (e) ′ are the third hologram of the present invention. It is a figure for demonstrating the laminated body for enclosure laminated glass.

FIG. 8 is a diagram for explaining a third method for producing a laminated body for laminated glass for enclosing holograms of the present invention.

FIG. 9 is a diagram for explaining a method for producing a laminated glass using the first hologram-encapsulated laminated glass laminate of the present invention.

FIG. 10 is a diagram for explaining a method for producing a laminated glass using the laminate of another aspect of the first hologram-encapsulated laminated glass laminate of the present invention.

FIG. 11 is a diagram for explaining a laminated glass produced by using the first hologram-encapsulated laminated glass laminate of the present invention.

FIG. 12 is a diagram for explaining a laminated glass produced by using the laminated body of another aspect of the first hologram-encapsulated laminated glass laminate of the present invention.

FIG. 13 is a diagram for explaining a hologram recording method and a recording / reproducing principle thereof.

[Explanation of symbols]

1 is a first carrier film, 2 is a first adhesive layer, 3 is a hologram, 4 is a second adhesive layer, 5 is a plasticizer barrier layer, 6
Is a third adhesive layer, 7 is a second carrier film, 8, 10
Is glass, 9 is a synthetic resin film containing a plasticizer, 11 is the exterior direction, 15 and 16 are laminated bodies for laminated glass containing a third hologram layer, 20 is a laser, 21 is a half mirror, 2
Reference numerals 2 and 23 are lenses, and 25 is a display body.

Claims (6)

[Claims] 1. A laminate used in the manufacture of a hologram layer-encapsulated laminated glass comprising a hologram layer / a plasticizer barrier layer / a synthetic resin layer containing a plasticizer laminated in this order on at least one glass plate. The laminated body is formed by sequentially laminating a first carrier film, a hologram layer, a plasticizer barrier layer, and a second carrier film, and whether the hologram layer and the plasticizer barrier layer have the same laminated area. , Or the laminating area of the plasticizer barrier layer is set to a size such that it can be covered over the entire circumference of the hologram layer surface excluding the bonding surface with the glass plate by the heat and pressure operation during the production of the laminated glass. A part of the carrier is releasably adhered from both carrier films, and both carrier films are used after being peeled off. A laminated body for laminated glass containing a glass layer. 2. A laminate used in the production of a hologram layer-encapsulated laminated glass comprising a hologram layer / a plasticizer barrier layer / a synthetic resin layer containing a plasticizer laminated in this order on at least one glass plate. The laminated body is formed by sequentially laminating a first carrier film, a hologram layer, a plasticizer barrier layer, and a second carrier film, and whether the hologram layer and the plasticizer barrier layer have the same laminated area. , Or the laminating area of the plasticizer barrier layer is set to a size such that it can be covered over the entire circumference of the surface of the hologram layer excluding the bonding surface with the glass plate by the heat pressing operation during the production of laminated glass. Is peelably adhered to a part of the carrier layer, and the first carrier film is peelably adhered in the same laminated area as the hologram layer. A laminated body for laminated glass containing a hologram layer, which is used after being separated and removed. 3. A laminated body for a laminated glass for enclosing a hologram layer, comprising a recording material layer having a hologram layer on a first carrier film, a plasticizer barrier layer forming material layer, and a second carrier film. It is formed by half-cutting a laminated structure composed of a film, a hologram layer, and a plasticizer barrier layer, or is obtained by further half-cutting the first carrier film and the hologram layer in the laminated structure. The laminated glass containing a hologram layer according to claim 2. 4. A laminate used in the production of a hologram layer-encapsulated laminated glass comprising a hologram layer / a plasticizer barrier layer / a synthetic resin film containing a plasticizer laminated in this order on at least one glass plate. , A hologram layer releasably laminated on a part of the first carrier film,
A plasticizer barrier layer is releasably laminated on a part of the second carrier film, and the laminated area of the hologram layer and the plasticizer barrier layer is the same, or the laminated area of the plasticizer barrier layer. The size of the hologram film is such that it can be covered over the entire circumference of the hologram layer surface excluding the bonding surface with the glass plate by the heat and pressure operation during the production of the laminated glass. A laminated body for laminated glass containing a hologram layer, characterized in that it is a thing. 5. A hologram layer and a plasticizer barrier layer are formed by half-cutting a recording material layer having a hologram layer on a first carrier film and a plasticizer barrier layer forming material layer on a second carrier film, respectively. The laminated body for laminated glass for enclosing a hologram layer according to claim 1 or 4, which is one. 6. The hologram layer and the plasticizer barrier layer each have a surface covered with a peelable protective layer, and the protective layer is peeled off before use. Laminate for laminated glass with hologram.