JP3729461B2 - Method for producing laminated glass with hologram layer - Google Patents

Description

[0001]
[Industrial application fields]
  The present invention provides a laminated glass encapsulating a hologram.In the production methodIn particular, it enables accurate and efficient production of laminated glass useful for applications such as combiners for head-up displays for automobiles and heat ray reflective films for window glass in buildings.For the production method of laminated glass with hologramRelated.
[0002]
[Prior art]
In recent years, holograms have been widely used for decoration, anti-counterfeiting, optical elements, etc., and particularly recently, volume phase type (Lippmann type) holograms with excellent wavelength selectivity and excellent stereoscopic effect. Is attracting attention.
[0003]
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. The light oscillated from the laser 20 is divided into two by the half mirror 21, and each laser beam is emitted from one point by the lenses 22 and 23. Instead, a hologram combiner is one in which these two divergent lights are incident from both sides of a volume phase hologram recording material 3 'such as a photopolymer and interfered as a Lippmann hologram.
[0004]
Such a hologram combiner 3 diffracts the light emitted from the display body 25 installed in the vicinity of one divergence point at the time of photographing, as shown in FIG. In this case, the image forming magnification and the image position are expressed by a relative distance L between the divergence point and the recording material at the time of photographing. In addition, since only light having a wavelength at the time of recording or a wavelength having a specific relationship with it is diffracted and light of other wavelengths is transmitted, the image can be superimposed or synthesized. An optical element typified by such a hologram combiner includes a head-up display combiner.
[0005]
In particular, when used in the form of laminated glass for automotive applications, the Japanese Industrial Standards for automotive safety glass (JIS 3211, 3212) must be satisfied. In JIS terminology, “Laminated glass is made by bonding two or more sheet glasses with plastic as an intermediate film, so that even if broken by the action of external force, most of the fragments are not scattered by the intermediate film. In general, a polyvinyl butyral film is used as the plastic intermediate film.
[0006]
When encapsulating a hologram as a combiner for a head-up display in such a laminated glass, the glass is composed of plate glass / hologram / polyvinyl butyral film / plate glass, and after preliminarily pressure bonding with a roller or the like, 130 It is manufactured by heating and pressurizing to about 0 ° C. and then press-bonding, and the hologram lamination side is used as the in-vehicle direction, and the polyvinyl butyral film lamination side is used as the outside direction.
[0007]
However, in this layer configuration, since the hologram and the polyvinyl butyral film are in direct contact, tetraethylene glycol n-heptanate, di- (n-hexyl) adipate, triethylene glycol A plasticizer such as di- (2-ethylbutyrate) permeates into the hologram structure, thereby disturbing the structure of interference fringes, causing a change in characteristics over time, and deteriorating image quality. A plasticizer barrier layer is interposed between the hologram layer and the polyvinyl butyral layer to prevent penetration of the plasticizer into the hologram. Conventionally, however, the lamination of the hologram layer and the plasticizer barrier layer is performed manually in register, but both the hologram layer and the plasticizer barrier film are extremely thin films and are optical thin films. In the lamination, there is a problem that high accuracy is required and it is difficult to carry out lamination with excellent quality.
[0008]
[Problems to be solved by the invention]
  The present invention,Hologram layer encapsulated laminated glass with excellent optical thin film stacking accuracy and excellent work efficiencyHow to makeThe issue is to provide
[0009]
[Means for Solving the Problems]
  The method for producing the first hologram layer-sealed laminated glass of the present invention comprises a synthetic resin comprising an adhesive layer / hologram layer / adhesive layer / plasticizer barrier layer / adhesive layer / plasticizer on at least one glass plate. In the method for producing a hologram layer encapsulated laminated glass laminated in the order of the layers, a first carrier film, an adhesive layer, a hologram layer, an adhesive layer, a plasticizer barrier layer, an adhesive layer, and a second carrier film were sequentially laminated. It is a laminated body, and the hologram layer and the plasticizer barrier layer have the same laminated area, or the laminated area of the plasticizer barrier layer is bonded to the glass plate by a thermocompression bonding operation when producing laminated glass. Both of the layers in the laminate that are sized so as to be able to cover the entire circumference of the removed hologram layer surface and are releasably bonded to a part between the two carrier films. The carrier film is peeled and removed, and an adhesive layer, hologram layer, adhesive layer, plasticizer barrier layer, and adhesive layer are laminated in this order on at least one glass plate. It is characterized by being crimped.
[0010]
  The method for producing the second hologram layer encapsulated laminated glass of the present invention comprises a synthetic resin comprising an adhesive layer / hologram layer / adhesive layer / plasticizer barrier layer / adhesive layer / plasticizer on at least one glass plate. In the method for producing a hologram layer encapsulated laminated glass laminated in the order of the layers, a first carrier film, an adhesive layer, a hologram layer, an adhesive layer, a plasticizer barrier layer, an adhesive layer, and a second carrier film were sequentially laminated. It is a laminated body, and the hologram layer and the plasticizer barrier layer have the same laminated area, or the laminated area of the plasticizer barrier layer is bonded to the glass plate by a thermocompression bonding operation when producing laminated glass. The holographic layer surface is removed so that it can be covered over the entire circumference, and is peelably adhered to a part of the second carrier film. Both carrier films in the laminate that are releasably bonded with the same lamination area as the layer are peeled and removed, and an adhesive layer, hologram layer, adhesive layer, plasticizer barrier layer, adhesive on at least one glass plate The layers are laminated in this order, and are heat-pressed with a synthetic resin layer containing a plasticizer.
[0011]
  In addition, the method for producing the second hologram layer encapsulated laminated glass is such that the laminate is an adhesive layer on the first carrier film, a recording material layer having a hologram layer, an adhesive layer, a plasticizer barrier layer forming material layer, an adhesive Formed by half-cutting a laminated structure comprising a first carrier film, an adhesive layer, a hologram layer, an adhesive layer, a plasticizer barrier layer, and an adhesive layer from a laminate comprising an agent layer and a second carrier film Or it can be obtained by half-cutting the first carrier film, the adhesive layer and the hologram layer in the laminated structure.
[0015]
First, the hologram layer-encapsulated laminated glass in the present invention is not limited to the above-mentioned automotive hologram layer-encapsulated laminated glass. For example, glass / hologram / plasticizer barrier layer / synthetic resin film containing plasticizer, glass / hologram / plastic It can be applied to laminated glass having a laminated structure such as an agent barrier layer / synthetic resin film / glass containing plasticizer, glass / hologram / plasticizer barrier layer / synthetic resin film / glass / synthetic resin film containing plasticizer.
[0016]
Next, a common laminate in the laminate in the present invention will be described with reference to FIG.
FIG. 1 is a view for explaining a first hologram encapsulated laminated glass laminate according to the present invention, wherein 1 is a first carrier film, 2 is a first adhesive layer, 3 is a hologram, and 4 is a first film. 2 adhesive layers, 5 a plasticizer barrier layer, 6 a third adhesive layer, and 7 a second carrier film.
[0017]
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, an unstretched polypropylene (CPP) film, an 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 Combined (EMMA) film, ethylene / methyl acrylate copolymer (EMA) film, polyester film, nylon film, triacetyl cellulose film, ethylene / vinyl alcohol copolymer (EVOH) Film, polyvinylidene chloride (PVDC) film, biaxially stretched 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, polymethyl methacrylate (PMMA) film, polyurethane film, fluororesin film, polymethylpentene film , Polybutene film, 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 to 500 μm, preferably 10 μm to 100 μm. In addition, when using the laminate for hologram-encapsulated laminated glass of the present invention, the carrier film is peeled off and removed, and the laminated surface of the carrier film may be peeled off with a silicon resin or the like. Also, from the viewpoint of workability, it is preferable that the peel forces on the respective laminated surfaces of the first and second carrier films are different.
[0018]
Next, as the hologram layer 3, a known hologram recording material such as silver salt, dichromated gelatin, or photopolymer can be used as the recording material, but includes glass / hologram / plasticizer barrier layer / plasticizer. When encapsulated in a laminated glass composed of a synthetic resin film / glass laminate, a volume type and phase type hologram may be used, and a photopolymer that does not require a wet development step is particularly preferable. Examples of the photopolymer include acrylic resin-based photopolymers.
[0019]
Further, the hologram layer may be laminated after recording the hologram on the recording material layer, but the hologram recording may be performed after using the unrecorded recording material layer to form the laminate in the present invention, or the lamination process. The hologram layer may be formed by performing hologram recording on the recording material layer at any of the stages.
[0020]
The size of the hologram layer can be appropriately determined according to the application, but in this first hologram layer encapsulated laminated glass laminate, an unrecorded portion having a width of 1 cm to 5 cm is formed around the hologram layer. Accordingly, the deterioration of the hologram due to the penetration of the plasticizer from the end portion can be prevented.
[0021]
Next, as the plasticizer barrier layer 5, a plasticizer in a synthetic resin film containing a plasticizer described later is prevented from penetrating into the hologram, and the plasticizer barrier layer 5 itself preferably does not contain a plasticizer. Further, when the laminated body of the present invention is used to make laminated glass, it is heat-pressed, but the plasticizer barrier layer preferably has a uniform and small thermal shrinkage and isotropically stretched. In particular, those having a shrinkage ratio of 2 to 5% or less when heated at 100 ° C. are preferable because they do not cause thermal distortion in the hologram. Particularly, if the extension ratio is adjusted so as to shrink in the same manner as the hologram, diffraction of the hologram The lattice is less likely to be distorted due to a difference in thermal shrinkage between the lattice and the plasticizer barrier layer.
[0022]
In order to form such a plasticizer barrier layer, for example, an aqueous solution of polyvinyl alcohol (degree of saponification of about 100%) is directly applied onto the hologram layer and dried to a film thickness of 0.1 μm to 100 μm, preferably 1 μm to 10 μm. Good. Further, an ethylene-vinyl acetate copolymer film (film thickness: 0.1 μm to 100 μm, preferably 10 μm to 100 μm) may be laminated using the second adhesive layer, and further, polyethylene terephthalate, polyvinyl chloride, etc. The film may be laminated, or a layer may be formed by a method such as coating. When the thickness of the plasticizer barrier layer is thick, the end part is noticeable, so the total film thickness of the hologram layer and the plasticizer barrier layer is preferably 50 μm or less, and 25 μm from the viewpoint of perspective distortion. The following is preferred. The plasticizer barrier layer preferably has a visible light transmittance of 400% to 780 nm of 90% or more and a haze of 1% or less.
[0023]
Next, the adhesive layer will be described. In the first adhesive layer 2, the second adhesive layer 4, and the third adhesive layer, when contacting with the hologram layer, it may be formed using an adhesive containing no plasticizer, The film thickness is 0.1 μm to 10 μm. As the optical characteristics of the adhesive layer, it is preferable that the visible light transmittance at 400 to 780 nm is 90% or more and the haze is 1% or less, like the plasticizer barrier layer. In addition, when the hologram layer 3 and the plasticizer barrier layer 5 have adhesiveness by themselves, these adhesive layers can be omitted.
[0024]
Such adhesives include natural rubber-based, recycled rubber-based, chloroprene rubber-based, nitrile rubber-based, styrene / butadiene rubber-based, thermoplastic elastomer-based elastomer-based adhesives, and epoxy resin-based, polyurethane-based, etc. Synthetic resin adhesives, reactive acrylic adhesives, chemically reactive adhesives such as cyanoacrylates, etc., UV curable adhesives, EB curable adhesives, and ethylene / vinyl acetate copolymer resin hot melt systems , Polyamide-based, polyester-based, thermoplastic elastomer-based, reactive hot-melt-based hot-melt adhesives, water-soluble adhesives such as water-based adhesives, emulsion-based adhesives, latex-based adhesives, and inorganic adhesives Agents and the like. As the bonding method, thermoplastic materials may be sandwiched between laminates and heated to a temperature above the softening point, and UV and EB curing types may be sandwiched between laminates and irradiated with ultraviolet rays, electron beams. It is good to cure by irradiation, and the adhesive type is simply cured by being sandwiched between laminates.
[0025]
Next, a method for manufacturing the first hologram layer-enclosed laminated glass laminate shown in FIG. 1 will be described.
4 to 6 are diagrams for explaining a method of manufacturing the laminate shown in FIG. 1, in which 2 ′ is a first adhesive coating layer, 3 ′ is a hologram recorded or unrecorded. In the recording material layer, 4 'is a second adhesive coating layer, 5' is a plasticizer barrier layer, 6 'is a third adhesive coating layer, and the same reference numerals as those in FIG.
[0026]
First, as shown in FIG. 4A, a third adhesive layer coating layer 6 ′, a plasticizer barrier layer 5 ′, and a second adhesive layer coating layer are formed on the surface of the second carrier film 7 whose surface has been peeled off. After the layers 4 ′ are sequentially formed, the second carrier film 7 is left, the second adhesive coating layer 4 ′, the plastic is left as shown in FIG. The agent barrier layer coating layer 5 ′ and the third adhesive coating layer 6 ′ are half-cut to obtain a laminate 15. Half-cutting is possible if a sharp blade is used, and may be performed by a known cutting device.
[0027]
Further, as shown in FIG. 5 (d), separately, the first adhesive coating layer 2 'and the recording material layer 3 on which the hologram has been recorded or not recorded are formed on the surface of the first carrier film 1 whose surface has been peeled off. 'Is sequentially formed, and then, as shown in FIG. 4E, the cross section is shown, and in FIG. 2F, the plane is shown, leaving the first carrier film 1 and the first adhesive coating layer 2 ′, the recording material layer. Similarly, 3 ′ is half-cut to obtain a laminate 16. At that time, the lamination area of the hologram layer 3 is half-cut so as to be the same as the lamination area of the plasticizer barrier layer 5.
[0028]
Next, the laminated body 15 shown in FIG. 6B and the laminated body 16 shown in FIG. 6E are laminated as shown by arrows, and the first hologram layer-encapsulated laminated glass of the present invention shown in FIG. Can be produced. In addition, FIG.6 (g) is the conceptual diagram which looked at the laminated body for 1st hologram layer enclosure laminated glasses from the plane, and a dotted line part shows the laminated body pinched | interposed between both carrier films.
[0029]
Next, another embodiment of the first hologram layer encapsulated laminated glass laminate of the present invention will be described with reference to FIG.
The laminate shown in FIG. 2 is obtained by stacking the hologram layer 3 with a smaller laminate area than the plasticizer barrier layer 5 in the laminate shown in FIG. As shown in FIG. 12 to be described later, the relationship with the agent barrier layer 5 is set so that the plasticizer barrier layer 5 covers the entire circumference except for the contact portion with the glass 8 when encapsulated in the laminated glass. Is done.
[0030]
In this laminate, since the hologram layer 3 is covered with the plasticizer barrier layer 5 including its end portions, the penetration of the plasticizer from the synthetic resin film containing the plasticizer can be prevented. The unrecorded portion in the hologram layer 3 required in the hologram layer-enclosed laminated glass laminate shown can be dispensed with. In general, when an unrecorded portion exists in the periphery of a hologram, a whitening phenomenon (haze) and a yellowing phenomenon (yellowness) occur, resulting in a triple structure of a hologram portion, an unrecorded portion, and a glass portion. In this laminated body, there is no need to leave an unrecorded portion, and it can be made noise-free, for example, as it is enclosed in a windshield of an automobile or the like.
[0031]
As a manufacturing method, as shown in FIG. 7, it is formed in the same manner as the laminate shown in FIG. 1 except that the relationship of the laminate area of the hologram layer 3 and the plasticizer barrier layer 5 is set as described above. That is, the laminate 15 shown in FIG. 7 (b) ′ and the laminate 16 shown in FIG. 7 (e) can be laminated to form a first hologram layer encapsulated laminated glass laminate. In addition, the figure shown by the same figure (g) 'is the conceptual diagram which looked at this laminated body from the plane, and a dotted line part shows the state of the laminated body clamped between both carrier films.
[0032]
Since the first hologram layer-encapsulated laminated glass laminate has a hologram layer and a plasticizer barrier layer laminated in one set between both carrier films, positioning and the like are necessary when encapsulating the hologram in the laminated glass. There is no, and it can be made to stick easily.
[0033]
Next, the 2nd hologram layer enclosure laminated glass laminated body is demonstrated. This laminate is shown in FIG. 3 and the laminate is the same as that in the first laminate described above.
The second laminated body has the same laminated structure as that of the laminated body shown in FIG. 1, but is different in the laminated area of the first carrier film.
[0034]
FIG. 8 is a diagram showing an example of a method for producing this laminate, in which 1 ′ represents the first carrier film having the same laminate area as the hologram layer 3, and the laminate in FIGS. The same reference numerals indicate the same contents.
[0035]
As shown in FIG. 8 (a), this laminate has a first carrier film 1, a first adhesive layer coating layer 2 ', a hologram recording or non-recording recording material layer 3', and a second adhesive layer coating. After the layer 4 ′, the plasticizer barrier layer forming material layer 5 ′, the third adhesive layer coating layer 6 ′, and the second carrier film 7 are sequentially laminated, the second carrier film, the first carrier film, and the first adhesive are stacked. The coating layer, the hologram recording or non-recording recording material layer, the second adhesive coating layer, the plasticizer barrier layer forming material layer, and the third adhesive coating layer are half-cut, and the second shown in FIG. The laminate for a hologram layer encapsulated laminated glass. In addition, in the said aspect, a 1st carrier film may be left and another laminated structure may be half-cut similarly.
[0036]
Further, as another aspect of the second laminated body, although not shown, in the second laminated body in FIG. 8B, the laminated area and plasticity of the first carrier film 1 'and the hologram layer 3 are not shown. The relationship between the lamination area of the agent barrier layer 5 and the lamination area of the hologram layer 3 and the plasticizer barrier layer 5 in the first laminate shown in FIG. As the production method, in the second laminate in FIG. 8B, the first carrier film 1 ′ and the hologram layer 3 may be further half-cut, or the half-cut first carrier film 1 ′. And the hologram layer 3 and a laminate composed 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. The lamination relationship between the hologram layer 3 and the plasticizer barrier layer 5 may be laminated in the same manner as in the laminate shown in FIG. This aspect shows the same effect as described in the section of the laminate shown in FIG.
[0037]
  next,Reference exampleThe laminate for hologram layer-sealed laminated glass will be described.
This laminated body has two types of laminated bodies, the laminated body 15 shown in FIG. 6 (b) described in the section of the first hologram layer encapsulated laminated glass and the laminated body 16 shown in FIG. 6 (e). Each carrier film is peeled off, and the hologram layer 3 and the plasticizer barrier layer 5 can be individually sealed and encapsulated in glass.
[0038]
As another embodiment of this laminate, a laminate 15 shown in FIG. 7 (b) ′ and a laminate 16 shown in FIG. 7 (e) ′ may be combined. In this case, the plasticizer barrier layer and the hologram layer The relationship between the stacked areas is the same as that described with reference to FIG.
[0039]
  thisReference example1 and FIG. 2 are the same as those shown in FIGS. 1 and 2, respectively. However, the plasticizer barrier layer and the hologram are laminated in the laminated glass. The alignment with the layer can be easily performed by coding each carrier film.
[0040]
  Also thisReference exampleThe two types of laminates in the laminates are, for example, a polyethylene terephthalate film and a polypropylene film as protective layers on the surface of the plasticizer barrier layer 5 in the laminate 15 and the hologram layer 3 in the laminate 16 until the laminated glass is produced. , Polyethylene film, Teflon (registered trademark) film, polyvinylidene fluoride film, polyvinyl chloride film, polyvinylidene chloride film, various release treatment films, release treatment film, etc. It is suitable for the protection, storage stability, scratch resistance and transportability of the hologram layer during operation.
[0041]
Next, a method for producing a hologram layer encapsulated laminated glass using the laminate for hologram layer encapsulated laminated glass of the present invention will be described.
FIG. 9 shows a method for producing a laminated glass comprising glass / hologram layer / plasticizer barrier layer / synthetic resin film containing plasticizer / glass using the first hologram layer-encapsulated laminated glass laminate of the present invention. It is a figure for demonstrating, in the figure, 8 and 10 are glass, 9 is a synthetic resin film containing a plasticizer, The same code | symbol as FIG. 1 shows the same content.
As shown in FIG. 9, after peeling off one or both of the carrier films in the first laminate and bonding them on the glass from the hologram layer 3 side, the synthetic resin film 9 containing the plasticizer and the glass 10 are sequentially formed. Overlap, 130 to 150 ° C, pressure 1Kg / cm in autoclave²As mentioned above, it is good to laminate | stack on the conditions for 30 to 60 minutes. The laminated state is shown in FIG.
[0042]
Moreover, the case where the laminated body shown in FIG. 2 which is another aspect is used is shown in FIG. A laminated glass is formed in the same manner as described above, and its state is shown in FIG. In addition, the arrow 11 in FIG. 11, FIG. 12 shows the vehicle outer direction in the case of making this laminated glass for motor vehicles.
[0043]
  The same applies to the case of using the second hologram layer-encapsulated laminated glass laminate of the present invention.
  Also,Reference exampleIn the case of the laminate for hologram layer encapsulated laminated glass, first, the laminate 16 shown in FIG. 6 is peeled and removed if it has release paper, and then laminated on the glass 8 from the hologram layer side, Remove. Next, after having peeled off and removed the laminate 15 shown in FIG. 5B when having release paper, it was aligned with the hologram layer from the plasticizer barrier layer side and adhered, and the carrier film was peeled off and removed. The synthetic resin film 9 containing a plasticizer and the glass 10 are stacked and laminated under the same conditions as described above.
[0044]
[Operation and effect of the invention]
  The first to the present inventionSecondSince the hologram layer-enclosed laminated glass laminate has a hologram layer and a plasticizer barrier layer supported on a carrier film, it can efficiently obtain high adhesion accuracy required for an optical thin film when it is attached to the glass surface. Can be automated. In particular, in the first and second laminates shown in FIGS. 1 and 3, the hologram layer and the plasticizer barrier layer are laminated in one set between both carrier films, so that the hologram is formed in the laminated glass. When encapsulating, there is no need for positioning with the plasticizer barrier layer, and higher adhesion accuracy is obtained.
[0045]
  Also, first to firstSecondIn the hologram layer-enclosed laminated glass laminate, another embodiment in which the lamination area of the hologram layer is smaller than the lamination area of the plasticizer barrier layer is not required to provide an unrecorded portion on the hologram layer. It is possible to prevent a triple structure of a hologram portion, an unrecorded portion, and a glass portion due to a haze), a yellowing phenomenon (yellowness), and the like, and a hologram layer-enclosed laminated glass without noise can be obtained.
EXAMPLES Hereinafter, although an Example demonstrates this invention, this invention is not limited by this.
[0046]
[Reference example]
  Polyurethane adhesive (Asahi Denka Kogyo Co., Ltd., trade name Adekabon titer HUX232) on a polyethylene terephthalate film (trade name Lumirror T60, made by Toray Industries Co., Ltd., film thickness 50 μm) having a width of 300 mm and a dry film thickness of 1 μm. Then, a 10% aqueous solution of polyvinyl alcohol (manufactured by Nippon Synthetic Chemical Industry Co., Ltd., Gohsenol NM-11, saponification degree 100%) is applied onto the adhesive layer, and a plasticizer barrier layer having a dry film thickness of 5 μm Was provided. Next, a 5% aqueous solution of a mixture comprising 25 parts by weight of a polyurethane adhesive (same as above) and 75 parts by weight of polyvinyl alcohol (same as above) was applied on the plasticizer barrier layer with a dry film thickness of 1 μm to obtain a laminate. . Next, a 220 mm × 220 mm square is cut in the plasticizer barrier layer in the obtained laminate, and a portion other than the square is peeled off from the polyethylene terephthalate film, and a laminate A having a square plasticizer barrier layer is obtained. Got.
[0047]
On the other hand, on a polypropylene film having a width of 300 mm (trade name: Pyrene Film-OT P2002, film thickness: 50 μm, manufactured by Toyobo Co., Ltd.), an ultraviolet curable adhesive (trade name: WORDLOCK XVL, manufactured by Kyoritsu Chemical Industry Co., Ltd.). -09) is applied with 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 is bonded onto the adhesive layer, and further peeled off onto the hologram layer. The treated polyethylene terephthalate film is laminated as a carrier film, and ultraviolet rays are 100 mJ / cm.²Irradiation yielded laminate B. Next, in the obtained laminate, a polyethylene terephthalate film is left, a 220 mm × 220 mm square is cut in the polypropylene film and the hologram layer, and portions other than the square are peeled and removed, and a laminate having a square hologram layer Body B was obtained. In addition, as a hologram layer, an unrecorded portion was left around 20 mm.
[0048]
Next, on the clear glass plate with a thickness of 2 mm, the polypropylene film in the laminate B is peeled off, and the laminate B is laminated from the hologram layer side, and then the polyethylene terephthalate film is peeled and removed, and is further made to correspond to the hologram layer. After the laminate A was laminated from the plasticizer barrier layer, the polyethylene terephthalate film was peeled off. By laminating using each laminated body, an optical thin film can be laminated accurately and easily.
[0049]
Next, a 750 μm-thick polyvinyl butyral film was laminated on the peeled surface, and a 2 mm-thick clear glass plate was placed thereon, placed in an autoclave, 130 ° C., 5 kg / cm.²The hologram was enclosed between two glass plates by pressure.
[0050]
  The obtained laminated glass is good,Reference exampleWhen the laminate for hologram layer-sealed laminated glass is used, it is possible to efficiently produce laminated glass.
[0051]
【Example1]
  Reference exampleIn the manufacturing process of the laminate B, a polypropylene film is left, a polyethylene terephthalate film and a hologram layer are cut into a 220 mm × 220 mm square shape, parts other than the square are peeled and removed, and a laminate having a square hologram layer Body B 'was obtained. In addition, as a hologram layer, an unrecorded portion was left around 20 mm.
[0052]
  After removing the polyethylene terephthalate film in this laminate B ′, corresponding to the lamination position of the hologram layer,Reference exampleWas laminated from the side of the plasticizer barrier layer to obtain the first hologram layer encapsulated laminated glass laminate of the present invention.
[0053]
  To make a laminated glass using this first hologram layer-encapsulated laminated glass laminated body of the present invention, as shown in FIG. 9, first, after peeling off the polypropylene film on the hologram layer side in the laminated body, Laminate on clear glass, then remove the surface polyethylene terephthalate film, then laminate polyvinyl butyral film, clear glass,Reference exampleA laminated glass was produced in the same manner as described above.
[0054]
A laminated glass similar to the above could be produced, and the positioning of the hologram layer and the plasticizer barrier layer was not necessary at the time of producing the laminated glass, and could be easily produced.
[0055]
【Example2]
  Reference exampleIn the laminate B, a polyethylene terephthalate film is left, a 200 mm × 200 mm square is cut in the polypropylene film and the hologram layer, and portions other than the square are peeled off to obtain a laminate C having a square hologram layer. Obtained. Note that the hologram layer was made to leave only the recording layer without leaving an unrecorded portion in the periphery.
[0056]
  The obtained laminate C isReference example,Example1In place of each laminate B in the above,Reference example,Example1Similarly, as shown in FIGS. 7 (b) ′ and (e) ′.Reference exampleThe hologram layer-enclosed laminated glass laminate and the first hologram layer-enclosed laminated glass laminate shown in FIG.Reference example,Example1In the same manner as above, the laminated glass shown in FIG. 12 was used. The manufacturing process of the laminated glass using the laminated body shown by FIG. 2 is shown by FIG.
[0057]
  The resulting laminated glass isReference exampleCompared with the laminated glass obtained in 1), it was free from noise such as haze and yellowness due to the hologram non-recording layer.
[0058]
[Example 3]
  An acrylic adhesive (made by Nippon Shokubai Co., Ltd., trade name) on a polypropylene film (made by Panac Corporation, trade name: OPP # 40 red silicon, film thickness: 40 μm) having a width of 300 mm, whose surface was peeled off by silicone. Polyment KX-CK200) was applied with a dry film thickness of 2 μm, and a recorded hologram (film thickness of 20 μm) using an acrylic resin photopolymer as a recording material was adhered onto the adhesive layer. In addition, as a hologram layer, an unrecorded portion was left around 20 mm.
[0059]
Next, a polyurethane adhesive (same as above) is applied to the hologram layer with a dry film thickness of 1 μm, and then a 10% aqueous solution of polyvinyl alcohol (saponification degree 100%) is applied to form a plasticizer barrier layer with a dry film thickness of 5 μm. Furthermore, after applying a polyurethane adhesive (trade name Adekabon titer HUX575 manufactured by Asahi Denka Kogyo Co., Ltd.) with a dry film thickness of 1 μm, the surface was peeled with silicone, and a 300 mm wide polyethylene terephthalate film ( Toray Industries, Inc., trade name Lumirror S10, film thickness 25 μm) was laminated to obtain a second hologram layer-encapsulated laminated glass laminate of the present invention.
[0060]
A 220 mm × 220 mm square shape is cut in the laminated structure composed of the polypropylene film, hologram layer, and plasticizer barrier layer in this laminate, and the portions other than the square are peeled off from the polyethylene terephthalate film to obtain a square polypropylene film, The laminated body shown in FIG. 3 consisting of a hologram layer and a plasticizer barrier layer was obtained.
[0061]
  After peeling and removing the polypropylene film in this laminate,In the same manner as the first hologram layer encapsulated laminated glass laminate of the present invention,Reference exampleSimilarly, a laminated glass was produced.
[0062]
  The laminated glass obtained in this wayReference exampleIt was the same as that in
[Brief description of the drawings]
FIG. 1 is a view for explaining a first hologram encapsulated laminated glass laminate of the present invention.
FIG. 2 is a view for explaining another aspect of the first hologram encapsulated laminated glass laminate of the present invention.
FIG. 3 is a view for explaining a second hologram encapsulated laminated glass laminate of the present invention.
FIG. 4 is a diagram for explaining a part of the manufacturing method of the first hologram encapsulated laminated glass laminate of the present invention.
FIG. 5 is a diagram for explaining a part of the manufacturing method of the first hologram encapsulated laminated glass laminate of the present invention.
FIGS. 6A and 6B are diagrams for explaining a method for producing a first laminated body for hologram-encapsulated laminated glass according to the present invention, and FIGS. 6B and 6E are laminates for hologram-enclosed laminated glass of a reference example. FIGS. It is a figure for demonstrating a body.
FIG. 7 is a view for explaining a method for producing a first hologram encapsulated laminated glass laminate of the present invention, and (b) ′ and (e) ′ are hologram encapsulated laminated glass of a reference example. It is a figure for demonstrating the laminated body for use.
FIG. 8 is a view for explaining a method for producing the second hologram encapsulated laminated glass laminate of the present invention.
FIG. 9 is a view 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 view for explaining a method for producing a laminated glass using a laminated body of another embodiment of the first laminated body for hologram encapsulated laminated glass of the present invention.
FIG. 11 is a view for explaining a laminated glass produced using the first hologram-enclosed laminated glass laminate of the present invention.
FIG. 12 is a view for explaining a laminated glass produced by using a laminated body of another aspect in the first hologram encapsulated laminated glass laminate of the present invention.
FIG. 13 is a diagram for explaining a hologram recording method and its recording / reproducing principle.
[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 a vehicle exterior direction, 15 and 16 areReference exampleA laminated body for laminated glass of hologram layer, 20 is a laser, 21 is a half mirror, 22 and 23 are lenses, and 25 is a display body.

Claims (3)

In a method for producing a hologram layer encapsulated laminated glass laminated in the order of an adhesive layer / hologram layer / adhesive layer / plasticizer barrier layer / adhesive layer / plasticizer on at least one glass plate , A laminate in which a first carrier film, an adhesive layer, a hologram layer, an adhesive layer, a plasticizer barrier layer, an adhesive layer, and a second carrier film are sequentially laminated, and the hologram layer and the plasticizer barrier layer are the same The laminated area of the plasticizer barrier layer or the laminated area of the plasticizer barrier layer can be covered over the entire circumference of the hologram layer surface excluding the adhesive surface with the glass plate by the thermocompression bonding operation when making the laminated glass. Then, both carrier films in the laminate adhered to a part between both carrier films so as to be peelable from both carrier films are peeled and removed, so that at least one piece of glass Adhesive layer thereon, a hologram layer, an adhesive layer, a plasticizer barrier layer, an adhesive layer are laminated in this order, the hologram layer sealed laminated glass characterized in that it is heat-pressed and the synthetic resin layer containing a plasticizer Manufacturing method. In a method for producing a hologram layer encapsulated laminated glass laminated in the order of an adhesive layer / hologram layer / adhesive layer / plasticizer barrier layer / adhesive layer / plasticizer on at least one glass plate , A laminate in which a first carrier film, an adhesive layer, a hologram layer, an adhesive layer, a plasticizer barrier layer, an adhesive layer, and a second carrier film are sequentially laminated, and the hologram layer and the plasticizer barrier layer are the same The laminated area of the plasticizer barrier layer or the laminated area of the plasticizer barrier layer can be covered over the entire circumference of the hologram layer surface excluding the adhesive surface with the glass plate by the thermocompression bonding operation when making the laminated glass. The first carrier film is releasably adhered to a part of the second carrier film, and the first carrier film is peeled off at the same lamination area as the hologram layer. Turbocharger rear film is peeled off, the adhesive layer on at least one glass plate, a hologram layer, an adhesive layer, a plasticizer barrier layer, an adhesive layer are laminated in this order, and heating the synthetic resin layer containing a plasticizer A method for producing a hologram layer-sealed laminated glass, characterized by being pressure-bonded. The laminate is composed of an adhesive layer on a first carrier film, a recording material layer having a hologram layer, an adhesive layer, a plasticizer barrier layer forming material layer, an adhesive layer, and a laminate comprising a second carrier film. A laminated structure comprising a carrier film, an adhesive layer, a hologram layer, an adhesive layer, a plasticizer barrier layer , and an adhesive layer is formed by half-cutting, or the first carrier film is further formed in the laminated structure. The method for producing a hologram layer-encapsulated laminated glass according to claim 2, which is obtained by half-cutting an adhesive layer and a hologram layer.

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