WO2016052606A1 - 合わせガラス用中間膜及び合わせガラス - Google Patents
合わせガラス用中間膜及び合わせガラス Download PDFInfo
- Publication number
- WO2016052606A1 WO2016052606A1 PCT/JP2015/077707 JP2015077707W WO2016052606A1 WO 2016052606 A1 WO2016052606 A1 WO 2016052606A1 JP 2015077707 W JP2015077707 W JP 2015077707W WO 2016052606 A1 WO2016052606 A1 WO 2016052606A1
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- WO
- WIPO (PCT)
- Prior art keywords
- laminated glass
- resin layer
- plastic layer
- laminated
- interlayer film
- Prior art date
Links
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Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C27/00—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing
- C03C27/06—Joining glass to glass by processes other than fusing
- C03C27/10—Joining glass to glass by processes other than fusing with the aid of adhesive specially adapted for that purpose
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
- B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
- B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
- B32B17/10036—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising two outer glass sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
- B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
- B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
- B32B17/10559—Shape of the cross-section
- B32B17/10577—Surface roughness
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
- B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
- B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
- B32B17/10761—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer containing vinyl acetal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
- B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
- B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
- B32B17/10779—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer containing polyester
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/40—Properties of the layers or laminate having particular optical properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/538—Roughness
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2605/00—Vehicles
- B32B2605/006—Transparent parts other than made from inorganic glass, e.g. polycarbonate glazings
Definitions
- the present invention has a laminated structure of a plastic layer and a resin layer having a high Young's modulus, is excellent in impact resistance and penetration resistance, has high adhesion between the plastic layer and the resin layer, and is capable of blocking the resin layers.
- the present invention relates to an interlayer film for laminated glass that does not occur, and a laminated glass using the interlayer film for laminated glass.
- Laminated glass is highly safe because glass fragments are less likely to scatter even if broken due to external impact. For this reason, it is widely used as a window glass for vehicles such as automobiles, aircraft, buildings, and the like.
- laminated glass an interlayer film for laminated glass containing, for example, a polyvinyl acetal resin such as polyvinyl butyral resin and a plasticizer is interposed between at least a pair of glass plates, and laminated and integrated laminated glass is exemplified. It is done.
- Laminated glass is required to have high penetration resistance because it is not easily damaged even when subjected to an external impact.
- laminated glass with a multilayer structure in which a plastic layer with a high Young's modulus such as polyethylene terephthalate is laminated on a resin layer containing an adhesive resin such as polyvinyl acetal resin as laminated glass with improved impact resistance and penetration resistance
- An interlayer film has been proposed.
- Patent Document 1 discloses a resin layer (A) containing two transparent adhesive resins and a resin layer containing polyethylene terephthalate between two resin layers (a) ( An intermediate film comprising B) is disclosed.
- the resin layer (B) containing polyethylene terephthalate has a role of imparting excellent impact resistance, penetration resistance, flame heat resistance, and the like to the intermediate film.
- Patent Document 2 discloses an interlayer film for laminated glass composed of a laminate having a plasticized polyvinyl acetal resin film and a polyester film, and by using a polyester film having a high elastic modulus in combination.
- Patent Document 3 discloses an intermediate film in which two or more types of layers having different Young's moduli are laminated, and the intermediate film having a low Young's modulus is superimposed on both the front and back surfaces of the intermediate film having a high Young's modulus. It is described that the impact resistance and peel resistance are improved by adopting a layer structure.
- the example of Patent Document 3 describes an intermediate film in which two layers A and B are stacked in a stacked structure of A / B / A.
- An interlayer film for laminated glass having a multilayer structure in which a plastic layer with a high Young's modulus and a resin layer containing an adhesive resin such as polyvinyl acetal resin are laminated has low adhesion between the plastic layer and the resin layer, and the plastic layer and the resin layer There was a problem that and may peel off.
- As a means for improving the adhesion between the plastic layer and the resin layer it is conceivable to reduce the roughness of the surface of the resin layer on the side in contact with the plastic layer.
- the resin layer is stored as a roll before being laminated with the plastic layer.
- the surface roughness of the resin layer is reduced, there is a problem that blocking occurs in which the resin layers are bonded to each other in the roll-shaped body of the resin layer, making it difficult to pull out the resin layer.
- the present invention has a laminated structure of a plastic layer and a resin layer having a high Young's modulus, is excellent in impact resistance and penetration resistance, has high adhesion between the plastic layer and the resin layer, and is a resin.
- An object is to provide an interlayer film for laminated glass in which blocking between layers does not occur, and a laminated glass using the interlayer film for laminated glass.
- the present invention is an interlayer film for laminated glass having a multilayer structure having a plastic layer having a Young's modulus of 1 GPa or more and a first resin layer laminated on a first surface of the plastic layer.
- An interlayer film for laminated glass having a glossiness of 10 to 40 on the surface of the resin layer laminated on the plastic layer. The present invention is described in detail below.
- the interlayer film for laminated glass has a multilayer structure including a plastic layer having a Young's modulus of 1 GPa or more and a first resin layer laminated on the first surface of the plastic layer. Paying attention to the glossiness of the surface of the first resin layer laminated on the plastic layer, and adjusting this to a specific range, the high adhesion between the plastic layer and the resin layer, and the resin layer.
- the present invention has been completed by finding out that it is possible to simultaneously draw out the resin layer without causing blocking between the resin layers when it is made into a roll.
- the interlayer film for laminated glass of the present invention has a multilayer structure having a plastic layer having a Young's modulus of 1 GPa or more and a first resin layer. By using such a multilayer structure, excellent impact resistance and penetration resistance can be achieved.
- the plastic layer has a Young's modulus of 1 GPa or more.
- the Young's modulus of the plastic layer is preferably 1.5 GPa or more, and more preferably 2 GPa or more.
- the upper limit of the Young's modulus of the plastic layer is not particularly limited, but the upper limit is substantially about 10 GPa.
- the Young's modulus of the plastic layer is determined by the slope of the straight line portion of the strain-stress curve when a strain-stress curve is drawn at 23 ° C. by a tensile test according to JIS K7127. Means the numerical value represented.
- the plastic layer preferably contains a thermoplastic resin.
- the thermoplastic resin constituting the plastic layer is not particularly limited as long as it can achieve the Young's modulus, and examples thereof include linear polyolefins such as polyethylene, polypropylene, poly (4-methylpentene-1), and norbornenes.
- Ring opening metathesis polymers or addition polymers such as addition copolymers of norbornenes with other olefins, biodegradable polymers such as polylactic acid, polybutyl succinate, nylon 6, Polyamide such as nylon 11, nylon 12, nylon 66, aramid, polymethyl methacrylate, polyvinyl chloride, polyvinylidene chloride, polystyrene, styrene copolymer polymethyl methacrylate, polycarbonate, polypropylene terephthalate, polyethylene terephthalate, polyethylene naphthalate Polyester such as polybutylene terephthalate, polyethylene-2,6-naphthalate, polyether sulfone, polyether ether ketone, modified polyphenylene ether, polyphenylene sulfide, polyether imide, polyimide, polyarylate, Examples thereof include a tetrafluoroethylene resin, a trifluoride ethylene resin, a trifluoride ethylene resin, a trifluor
- thermoplastic resins may be used independently and may use 2 or more types together.
- PET polyethylene terephthalate
- PBT polybutylene terephthalate
- the like are preferable because they are easy to mold and can impart higher impact resistance and penetration resistance.
- the plastic layer preferably contains an ultraviolet shielding agent.
- the ultraviolet shielding agent is not particularly limited.
- a metallic ultraviolet shielding agent a metal oxide ultraviolet shielding agent, a benzotriazole ultraviolet shielding agent (benzotriazole compound), a benzophenone ultraviolet shielding agent (benzophenone compound), or a triazine type.
- examples thereof include an ultraviolet shielding agent (triazine compound), a malonic acid ester ultraviolet shielding agent (malonic acid ester compound), an oxalic acid anilide ultraviolet shielding agent (oxalic acid anilide compound), and a benzoate ultraviolet shielding agent (benzoate compound).
- the plastic layer preferably contains an antioxidant.
- the antioxidant is not particularly limited.
- the plastic layer may further contain additives such as a light stabilizer, a flame retardant, an antistatic agent, a pigment, a dye, an adhesion adjusting agent, a moisture proofing agent, and a fluorescent brightening agent, as necessary.
- additives such as a light stabilizer, a flame retardant, an antistatic agent, a pigment, a dye, an adhesion adjusting agent, a moisture proofing agent, and a fluorescent brightening agent, as necessary.
- the preferable lower limit of the thickness of the plastic layer is 5 ⁇ m, and the preferable upper limit is 300 ⁇ m. When the thickness of the plastic layer is within this range, excellent impact resistance and penetration resistance can be achieved. A more preferable lower limit of the thickness of the plastic layer is 30 ⁇ m, and a more preferable upper limit is 150 ⁇ m.
- the first resin layer has a lower limit of 10 and an upper limit of 40 on the surface on which the plastic layer is laminated.
- the glossiness is within this range, high adhesiveness to the plastic layer can be exhibited and blocking can be prevented from occurring.
- the glossiness is less than 10, the adhesion to the plastic layer is poor, and when it exceeds 40, the occurrence of blocking cannot be prevented.
- the preferable lower limit of the glossiness is 15, the preferable upper limit is 35, the more preferable lower limit is 18, and the more preferable upper limit is 30.
- the glossiness is measured in accordance with measurement method 2 described in JIS Z 8741: 1997 using a precision gloss meter (for example, “GM-26PRO” manufactured by Murakami Color Research Laboratory). Means 75 degree specular gloss.
- FIG. 1 is a schematic diagram for explaining the surface of the first resin layer on the side laminated on the plastic layer.
- An interlayer film 1 for laminated glass in FIG. 1 is an interlayer film for laminated glass having a two-layer structure of a plastic layer 2 and a first resin layer 3.
- the glossiness of the surface 31 on the side laminated on the plastic layer 2 of the first resin layer 3 of the interlayer film for laminated glass having the two-layer structure is controlled.
- the preferred lower limit of the 10-point average roughness Rz measured in accordance with JIS B0601-1982 on the surface laminated on the plastic layer is 5 ⁇ m, and the preferred upper limit is 55 ⁇ m.
- the more preferable lower limit of the ten-point average roughness Rz is 10 ⁇ m, the still more preferable lower limit is 15 ⁇ m, the more preferable upper limit is 50 ⁇ m, and the still more preferable upper limit is 35 ⁇ m.
- the first resin layer preferably has a roughness pitch of 80 ⁇ m or more measured according to JIS B0601-1982 on the surface laminated on the plastic layer.
- the pitch of the roughness is 80 ⁇ m or more, higher adhesiveness to the plastic layer can be exhibited and blocking can be further prevented.
- the roughness pitch is more preferably 100 ⁇ m or more, and further preferably 150 ⁇ m or more.
- the first resin layer preferably contains an adhesive thermoplastic resin.
- the adhesive thermoplastic resin include polyvinylidene fluoride, polytetrafluoroethylene, vinylidene fluoride-hexafluoropropylene copolymer, polytrifluoride ethylene, acrylonitrile-butadiene-styrene copolymer, polyester, Examples include polyether, polyamide, polycarbonate, polyacrylate, polymethacrylate, polyvinyl chloride, polyethylene, polypropylene, polystyrene, polyvinyl acetal, and ethylene-vinyl acetate copolymer. Of these, polyvinyl acetal is preferred.
- the polyvinyl acetal can be produced, for example, by acetalizing polyvinyl alcohol (PVA) with an aldehyde.
- PVA polyvinyl alcohol
- the degree of saponification of PVA is generally in the range of 70-99.9 mol%.
- the degree of polymerization of PVA for obtaining the polyvinyl acetal is preferably 200 or more, more preferably 500 or more, still more preferably 1700 or more, particularly preferably 2000 or more, preferably 5000 or less, more preferably 4000 or less, and even more preferably. Is 3000 or less, more preferably less than 3000, and particularly preferably 2800 or less.
- the polyvinyl acetal is preferably a polyvinyl acetal obtained by acetalizing PVA having a degree of polymerization of not less than the above lower limit and not more than the above upper limit. When the polymerization degree is equal to or higher than the lower limit, the penetration resistance of the laminated glass is further enhanced. When the polymerization degree is not more than the above upper limit, the intermediate film can be easily molded.
- the degree of polymerization of PVA indicates the average degree of polymerization.
- the average degree of polymerization is determined by a method based on JIS K6726 “Testing method for polyvinyl alcohol”.
- an aldehyde having 1 to 10 carbon atoms is preferably used as the aldehyde.
- aldehyde having 1 to 10 carbon atoms examples include formaldehyde, acetaldehyde, propionaldehyde, n-butyraldehyde, isobutyraldehyde, n-valeraldehyde, 2-ethylbutyraldehyde, n-hexylaldehyde, n-octylaldehyde, Examples include n-nonyl aldehyde, n-decyl aldehyde, and benzaldehyde.
- n-butyraldehyde n-hexylaldehyde or n-valeraldehyde is preferable, and n-butyraldehyde is more preferable.
- the said aldehyde only 1 type may be used and 2 or more types may be used together.
- the polyvinyl acetal is preferably polyvinyl butyral. By using polyvinyl butyral, the weather resistance of the interlayer film on the laminated glass member is further enhanced.
- the first resin layer preferably contains a plasticizer.
- the plasticizer is not particularly limited as long as it is a plasticizer generally used for an interlayer film for laminated glass.
- organic plasticizers such as monobasic organic acid esters and polybasic organic acid esters, organic Examples thereof include phosphoric acid plasticizers such as phosphoric acid compounds and organic phosphorous acid compounds.
- the organic plasticizer include triethylene glycol-di-2-ethylhexanoate, triethylene glycol-di-2-ethylbutyrate, triethylene glycol-di-n-heptanoate, and tetraethylene glycol-di-2.
- -Ethylhexanoate tetraethylene glycol-di-2-ethylbutyrate, tetraethylene glycol-di-n-heptanoate, diethylene glycol-di-2-ethylhexanoate, diethylene glycol-di-2-ethylbutyrate, diethylene glycol -Di-n-heptanoate and the like.
- triethylene glycol-di-2-ethylhexanoate, triethylene glycol-di-2-ethylbutyrate, or triethylene glycol-di-n-heptanoate is preferable. More preferably, it contains -2-ethylhexanoate.
- the content of the plasticizer relative to the thermoplastic resin in the first resin layer is not particularly limited.
- the content of the plasticizer with respect to 100 parts by mass of the thermoplastic resin is preferably 25 parts by mass or more, more preferably 30 parts by mass or more, still more preferably 35 parts by mass or more, preferably 80 parts by mass or less, more preferably. Is 60 parts by mass or less, more preferably 50 parts by mass or less.
- the content of the plasticizer is not less than the above lower limit, the penetration resistance of the laminated glass is further enhanced.
- the content of the plasticizer is not more than the above upper limit, the transparency of the interlayer film is further enhanced.
- the first resin layer preferably contains an adhesion adjusting agent.
- an alkali metal salt or alkaline-earth metal salt is used suitably, for example.
- salts, such as potassium, sodium, magnesium, are mentioned, for example.
- the acid constituting the salt include organic acids of carboxylic acids such as octylic acid, hexyl acid, 2-ethylbutyric acid, butyric acid, acetic acid and formic acid, or inorganic acids such as hydrochloric acid and nitric acid.
- the first resin layer is made of a modified silicone oil, a flame retardant, an antistatic agent, a moisture resistant agent, a heat ray reflective agent, a heat ray absorbing agent as an ultraviolet shielding agent, an antioxidant, a light stabilizer, and an adhesive force adjusting agent.
- An additive such as a coloring agent comprising an agent, an antiblocking agent, an antistatic agent, a pigment or a dye may be contained.
- the preferable lower limit of the thickness of the first resin layer is 100 ⁇ m, and the preferable upper limit is 2 mm. When the thickness of the first resin layer is within this range, excellent impact resistance and penetration resistance can be achieved.
- the more preferable lower limit of the thickness of the first resin layer is 200 ⁇ m, and the more preferable upper limit is 1 mm.
- a second resin layer may be further laminated on the second surface of the plastic layer opposite to the first surface.
- the second resin layer may be the same as the first resin layer, but a different one may be used.
- the glossiness of the surface of the second resin layer on the side laminated with the plastic layer is preferably 10 to 40.
- the method for producing the interlayer film for laminated glass of the present invention is not particularly limited, and may be laminated after each of the plastic layer and the first resin layer is prepared, and the resin composition as each raw material is removed from the co-extruder. You may manufacture by the method of co-extrusion and shape
- a mold when the first resin layer is extruded using an extruder a lip mold capable of imparting irregularities is adopted, and the conditions at the time of extrusion molding are controlled.
- the glossiness of the surface on the side laminated on the plastic layer can be 10-40.
- the glossiness of the obtained resin film surface is expected. Can be adjusted to the range. It is also effective to increase the distance from the mold to the cooling water tank. More specifically, a lip mold having a lip gap of 0.5 to 4.0 mm is used, the temperature of the resin composition at the mold entrance is 100 to 300 ° C., and the temperature of the lip mold is 100 to 300 ° C. By adjusting to 300 ° C. and extruding at a line speed of 3 to 35 m / min, the glossiness of the surface laminated on the plastic layer can be made 10 to 40.
- the laminated glass in which the interlayer film for laminated glass of the present invention is laminated between a pair of glass plates is also one aspect of the present invention.
- the said glass plate can use the transparent plate glass generally used. Examples thereof include inorganic glass such as float plate glass, polished plate glass, template glass, netted glass, wire-containing plate glass, colored plate glass, heat ray absorbing glass, heat ray reflecting glass, and green glass. Further, an ultraviolet shielding glass having an ultraviolet shielding coating layer formed on the glass surface can also be used. Furthermore, organic plastics plates such as polyethylene terephthalate, polycarbonate, and polyacrylate can also be used. Two or more types of glass plates may be used as the glass plate. For example, the laminated glass which laminated
- the present invention has a laminated structure of a plastic layer and a resin layer having a high Young's modulus, is excellent in impact resistance and penetration resistance, has high adhesion between the plastic layer and the resin layer, and An interlayer film for laminated glass in which blocking does not occur, and a laminated glass using the interlayer film for laminated glass can be provided.
- Example 1 Plastic layer A polyethylene terephthalate film (manufactured by Toray Industries Inc., “U34 Lumirror”, Young's modulus 4.5 GPa, thickness 100 ⁇ m) was used as the plastic layer.
- the resin composition was obtained by kneading.
- the obtained resin composition was extruded by an extruder to obtain a single first resin layer having a thickness of 380 ⁇ m.
- a lip mold having a lip gap of 1.0 mm was used, the temperature of the resin composition at the mold inlet was adjusted to 200 ° C., the temperature of the lip mold was adjusted to 210 ° C., and the line speed was 10 m / min. Extrusion was performed under the conditions.
- the obtained 1st resin layer was wound up in roll shape, and the roll-shaped body was obtained.
- thermocompression laminator (“MRK-650Y type” manufactured by MCK).
- An intermediate film for laminated glass having a two-layer structure was manufactured by thermocompression bonding by a roll-to-roll method under the conditions of a press pressure of 1 kN at the time of pressure bonding and a tension of 100 N at the time of conveyance.
- Examples 2 to 7, Comparative Examples 1 to 4 The interlayer film for laminated glass and the interlayer film in the same manner as in Example 1 except that the gap of the lip at the time of preparing the first resin layer, the temperature of the resin composition at the mold inlet, the temperature of the lip mold, and the line speed were changed. A roll was obtained.
- the present invention has a laminated structure of a plastic layer and a resin layer having a high Young's modulus, is excellent in impact resistance and penetration resistance, has high adhesion between the plastic layer and the resin layer, and An interlayer film for laminated glass in which blocking does not occur, and a laminated glass using the interlayer film for laminated glass can be provided.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Joining Of Glass To Other Materials (AREA)
- Laminated Bodies (AREA)
Abstract
Description
また、例えば特許文献2には、可塑化されたポリビニルアセタール樹脂膜とポリエステルフィルムとを有する積層体からなる合わせガラス用中間膜が開示されており、高弾性率を有するポリエステルフィルムを併用することにより、得られる中間膜の力学強度が向上し、これを用いて作製された合わせガラスの貫通強度等も著しく向上することが記載されている。
更に、例えば特許文献3には、ヤング率が異なる2種類以上の層を積層した中間膜が開示されており、高ヤング率の中間膜の表裏両面に低ヤング率の中間膜を重ね合わせて3層構造とすることにより耐衝撃性及び耐剥離性を向上させることが記載されている。特許文献3の実施例には、2つの層A、BがA/B/Aの積層構造で積層された中間膜が記載されている。
プラスチック層と樹脂層間の接着性を向上させる手段として、プラスチック層と接する側の樹脂層の表面の粗さを小さくすることが考えられる。通常、上記樹脂層は、プラスチック層と積層される前はロール状体として保管されている。しかしながら、樹脂層の表面の粗さを小さくすると、上記樹脂層のロール状体において樹脂層同士が接着してしまい、上記樹脂層の引き出しが困難になるというブロッキングが発生する問題があった。
以下に本発明を詳述する。
なお、本明細書において、上記プラスチック層のヤング率は、JIS K7127に準拠した引っ張り試験によって、23℃の条件で歪み-応力曲線を描いたときに、該歪み-応力曲線の直線部分の傾きにより表される数値を意味する。
上記プラスチック層を構成する熱可塑性樹脂は、上記ヤング率を達成できるものであれば特に限定されず、例えば、ポリエチレン、ポリプロピレン、ポリ(4-メチルペンテン-1)等の鎖状ポリオレフィンや、ノルボルネン類の開環メタセシス重合体又は付加重合体、ノルボルネン類と他のオレフィン類との付加共重合体等の脂環族ポリオレフィンや、ポリ乳酸、ポリブチルサクシネート等の生分解性ポリマーや、ナイロン6、ナイロン11、ナイロン12、ナイロン66等のポリアミドや、アラミドや、ポリメチルメタクリレート、ポリ塩化ビニル、ポリ塩化ビニリデン、ポリスチレン、スチレン共重合ポリメタクリル酸メチル、ポリカーボネート、ポリプロピレンテレフタレート、ポリエチレンテレフタレート、ポリエチレンナフタレート、ポリブチレンテレフタレート、ポリエチレン-2,6-ナフタレート等のポリエステルや、ポリエーテルサルフォンや、ポリエーテルエーテルケトンや、変性ポリフェニレンエーテルや、ポリフェニレンサルファイドや、ポリエーテルイミドや、ポリイミドや、ポリアリレートや、4フッ化エチレン樹脂や、3フッ化エチレン樹脂や、3フッ化塩化エチレン樹脂や、4フッ化エチレン-6フッ化プロピレン共重合体や、ポリフッ化ビニリデン等が挙げられる。これらの熱可塑性樹脂は単独で用いてもよく、2種以上を併用してもよい。なかでも、成形が容易で、より高い耐衝撃性、耐貫通性を付与できることから、ポリエチレンテレフタレート(PET)、ポリブチレンテレフタレート(PBT)等が好適である。
上記紫外線遮蔽剤は特に限定されず、例えば、金属系紫外線遮蔽剤、金属酸化物系紫外線遮蔽剤、ベンゾトリアゾール系紫外線遮蔽剤(ベンゾトリアゾール化合物)、ベンゾフェノン系紫外線遮蔽剤(ベンゾフェノン化合物)、トリアジン系紫外線遮蔽剤(トリアジン化合物)、マロン酸エステル系紫外線遮蔽剤(マロン酸エステル化合物)、シュウ酸アニリド系紫外線遮蔽剤(シュウ酸アニリド化合物)及びベンゾエート系紫外線遮蔽剤(ベンゾエート化合物)等が挙げられる。
上記酸化防止剤は特に限定されず、例えば、2,2-ビス[[[3-(3,5-ジ-tert-ブチル-4-ヒドロキシフェニル)プロピオニル]オキシ]メチル]プロパン-1,3-ジオール1,3-ビス[3-(3,5-ジ-tert-ブチル-4-ヒドロキシフェニル)プロピオナート]、4,4’-チオビス(6-tert-ブチル-3-メチルフェノール)、4,4’-ジメチル-6,6’-ジ(tert-ブチル)[2,2’-メチレンビス(フェノール)]、2,6-ジ-t-ブチル-p-クレゾール、4,4’-ブチリデンビス-(6-t-ブチル-3-メチルフェノール)等が挙げられる。
本明細書において光沢度とは、精密光沢計(例えば、村上色彩研究所社製、「GM-26PRO」等)を用いて、JIS Z 8741:1997に記載された測定方法2に準拠して測定される75度鏡面光沢を意味する。なお、上記第1の樹脂層の上記プラスチック層に積層される側の表面の形状によっては、光線の照射方向によって光沢度が変化する場合がある。この場合は、サンプル台に第1の樹脂層を静置し、光源の照射方向に対して第1の樹脂層をサンプル台上で回転させながら測定した際に、最小の値を示す光沢度を本発明の合わせガラス用中間膜の光沢度とすることが好ましい。
図1に上記第1の樹脂層の上記プラスチック層に積層される側の表面を説明する模式図を示した。図1の合わせガラス用中間膜1は、プラスチック層2と第1の樹脂層3との2層構造の合わせガラス用中間膜である。本発明では、この2層構造の合わせガラス用中間膜の第1の樹脂層3のプラスチック層2に積層される側の表面31の光沢度を制御する。
上記接着性の熱可塑性樹脂としては、例えば、ポリフッ化ビニリデン、ポリテトラフルオロエチレン、フッ化ビニリデン-六フッ化プロピレン共重合体、ポリ三フッ化エチレン、アクリロニトリル-ブタジエン-スチレン共重合体、ポリエステル、ポリエーテル、ポリアミド、ポリカーボネート、ポリアクリレート、ポリメタクリレート、ポリ塩化ビニル、ポリエチレン、ポリプロピレン、ポリスチレン、ポリビニルアセタール、エチレン-酢酸ビニル共重合体等が挙げられる。なかでも、ポリビニルアセタールが好適である。
上記可塑剤としては、合わせガラス用中間膜に一般的に用いられる可塑剤であれば特に限定されず、例えば、一塩基性有機酸エステル、多塩基性有機酸エステル等の有機可塑剤や、有機リン酸化合物、有機亜リン酸化合物等のリン酸可塑剤等が挙げられる。
上記有機可塑剤として、例えば、トリエチレングリコール-ジ-2-エチルヘキサノエート、トリエチレングリコール-ジ-2-エチルブチレート、トリエチレングリコール-ジ-n-ヘプタノエート、テトラエチレングリコール-ジ-2-エチルヘキサノエート、テトラエチレングリコール-ジ-2-エチルブチレート、テトラエチレングリコール-ジ-n-ヘプタノエート、ジエチレングリコール-ジ-2-エチルヘキサノエート、ジエチレングリコール-ジ-2-エチルブチレート、ジエチレングリコール-ジ-n-ヘプタノエート等が挙げられる。なかでも、トリエチレングリコール-ジ-2-エチルヘキサノエート、トリエチレングリコール-ジ-2-エチルブチレート、又は、トリエチレングリコール-ジ-n-ヘプタノエートを含むことが好ましく、トリエチレングリコール-ジ-2-エチルヘキサノエートを含むことがより好ましい。
上記接着力調整剤としては、例えば、アルカリ金属塩又はアルカリ土類金属塩が好適に用いられる。上記接着力調整剤として、例えば、カリウム、ナトリウム、マグネシウム等の塩が挙げられる。
上記塩を構成する酸としては、例えば、オクチル酸、ヘキシル酸、2-エチル酪酸、酪酸、酢酸、蟻酸等のカルボン酸の有機酸、又は、塩酸、硝酸等の無機酸が挙げられる。
上記第2の樹脂層は、上記第1の樹脂層と同様のものも用いることができるが、異なるものを用いてもよい。第1の樹脂層と第2の樹脂層とを異なる性質を有するものとすることにより、1層だけでは実現が困難であった種々の性能を有する合わせガラス用中間膜を提供することもできる。
なお、本発明の合わせガラス用中間膜が第2の樹脂層を有する場合、該第2の樹脂層の上記プラスチック層に積層される側の表面の光沢度は10~40であることが好ましい。
即ち、リップの間隔が広いリップ金型を用いること、押出時の樹脂組成物の温度を高く設定すること、ラインスピードを高く設定すること等によって、得られる樹脂膜表面の光沢度を所期の範囲に調整することができる。また、金型から冷却用水槽までの距離を長く取ることも効果的である。
より具体的には、リップ金型としてリップの間隙が0.5~4.0mmのものを用い、金型入口の樹脂組成物の温度を100~300℃に、リップ金型の温度を100~300℃に調整し、ラインスピード3~35m/分で押出しを行うことにより、上記プラスチック層に積層される側の表面の光沢度を10~40とすることができる。
上記ガラス板は、一般に使用されている透明板ガラスを使用することができる。例えば、フロート板ガラス、磨き板ガラス、型板ガラス、網入りガラス、線入り板ガラス、着色された板ガラス、熱線吸収ガラス、熱線反射ガラス、グリーンガラス等の無機ガラスが挙げられる。また、ガラスの表面に紫外線遮蔽コート層が形成された紫外線遮蔽ガラスも用いることができる。更に、ポリエチレンテレフタレート、ポリカーボネート、ポリアクリレート等の有機プラスチックス板を用いることもできる。
上記ガラス板として、2種類以上のガラス板を用いてもよい。例えば、透明フロート板ガラスと、グリーンガラスのような着色されたガラス板との間に、本発明の合わせガラス用中間膜を積層した合わせガラスが挙げられる。また、上記ガラス板として、2種以上の厚さの異なるガラス板を用いてもよい。
(1)プラスチック層
プラスチック層として、ポリエチレンテレフタレートフィルム(東レ社製、「U34 ルミラー」、ヤング率4.5GPa、厚み100μm)を用いた。
ポリビニルブチラール(水酸基の含有率30モル%、アセチル化度1モル%、ブチラール化度69モル%、平均重合度1700)100質量部に対し、可塑剤としてトリエチレングリコール-ジ-2-エチルヘキサノエート(3GO)40質量部と、紫外線遮蔽剤として2-(2’-ヒドロキシ-3’-t-ブチル-5-メチルフェニル)-5-クロロベンゾトリアゾール(BASF社製、「Tinuvin326」)0.5質量部と、酸化防止剤として2,6-ジ-t-ブチル-p-クレゾール(BHT)0.5質量部とを添加し、ミキシングロールで充分に混練し、樹脂組成物を得た。
得られた樹脂組成物を押出機により押出して、厚み380μmの単層の第1の樹脂層を得た。この際、リップ金型としてリップの間隙が1.0mmのものを用い、金型入口の樹脂組成物の温度を200℃、リップ金型の温度を210℃に調整し、ラインスピード10m/分の条件で押出しを行った。また、得られた第1の樹脂層をロール状に巻取り、ロール状体を得た。
得られた第1の樹脂層とプラスチック層とを熱圧着ラミネーター(エム・シー・ケー社製「MRK-650Y型」)を用いて、加熱温度90℃、圧着時のプレス圧1kN、搬送時の張力100Nの条件にて、ロールツーロール方式により熱圧着を行い、2層構造を有する合わせガラス用中間膜を作製した。
第1の樹脂層の調製時のリップの間隙、金型入口の樹脂組成物の温度、リップ金型の温度及びラインスピードを変更した以外は、実施例1と同様にして合わせガラス用中間膜及びロール状体を得た。
実施例及び比較例で得られた第1の樹脂層、合わせガラス用中間膜について、以下の方法により評価を行った。
結果を表1に示した。
得られた第1の樹脂層のプラスチック層に積層させる側の表面の光沢度を、精密光沢計(村上色彩研究所社製、「GM-26PRO」等)を用いて、JIS Z 8741:1997に記載された測定方法2に準拠して測定した。その際、サンプル台に第1の樹脂層を静置し、光源の照射方向に対して第1の樹脂層をサンプル台上で回転させながら測定し、最小の値を示す光沢度を第1の樹脂層のプラスチック層に積層される側の表面の光沢度とした。
また、得られた第1の樹脂層のプラスチック層に積層させる側の表面の十点平均粗さRz及び粗さのピッチをJIS B0601-1982に準拠した方法により測定した。
得られた第1の樹脂層の500m巻きのロール状体を巻返機に設置し、第1の樹脂層を引き出す際に必要な力を張力検出器(三菱電機製、LX-050TD)にて測定した。第1の樹脂層を引き出す際に必要な力の最も数値の高い部分が350N/m以下であれば、一般にブロッキングは発生していないと判断される。ロール状体からの引き出しに必要な力が200N/m以下である場合を「○○」と、200N/mを超えて350N/m以下である場合を「○」と、350N/mを超える場合を「×」と評価した。
プラスチック層と第1の樹脂層との接着力に関して、JIS K6854-2に準拠して、テンシロン万能材料試験機(オリエンテック社製、「RTM-500」)を用いて、23℃で、500mm/minの速度で、接着力を測定した。
一般に、プラスチック層と樹脂層との接着力が3N/5cm以上であれば、剥離等の問題は生じないと判断できる。プラスチック層と樹脂層との接着力が8N/5cm以上である場合を「○○○」、8N/5cm未満、5N/5cm以上である場合を「○○」と、5N/5cm未満、3N/5cm以上である場合を「○」と、3N/5cm未満である場合を「×」と評価した。
2 プラスチック層
3 第1の樹脂層
31 第1の樹脂層3のプラスチック層2に積層される側の表面
Claims (4)
- ヤング率が1GPa以上であるプラスチック層と、前記プラスチック層の第1の表面に積層された第1の樹脂層とを有する多層構造の合わせガラス用中間膜であって、前記第1の樹脂層の前記プラスチック層に積層される側の表面の光沢度が10~40であることを特徴とする合わせガラス用中間膜。
- 第1の樹脂層のプラスチック層に積層される側の表面のJIS B0601-1982に準拠して測定される十点平均粗さRzが5~55μmであることを特徴とする請求項1記載の合わせガラス用中間膜。
- 第1の樹脂層のプラスチック層に積層される側の表面のJIS B0601-1982に準拠して測定される粗さのピッチが80μm以上であることを特徴とする請求項1又は2記載の合わせガラス用中間膜。
- 請求項1、2又は3記載の合わせガラス用中間膜が、一対のガラス板の間に積層されていることを特徴とする合わせガラス。
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2015
- 2015-09-30 JP JP2015553971A patent/JP5933139B1/ja active Active
- 2015-09-30 US US15/323,497 patent/US20170197383A1/en not_active Abandoned
- 2015-09-30 CN CN201580020726.4A patent/CN106232549A/zh active Pending
- 2015-09-30 MX MX2017003745A patent/MX2017003745A/es unknown
- 2015-09-30 KR KR1020167029957A patent/KR102452747B1/ko active IP Right Grant
- 2015-09-30 RU RU2017114659A patent/RU2693107C2/ru active
- 2015-09-30 EP EP15846564.1A patent/EP3202731B1/en active Active
- 2015-09-30 WO PCT/JP2015/077707 patent/WO2016052606A1/ja active Application Filing
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Patent Citations (3)
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JP2000290046A (ja) * | 1999-04-09 | 2000-10-17 | Sekisui Chem Co Ltd | 合わせガラス用中間膜及びその製造方法 |
JP2010089365A (ja) * | 2008-10-08 | 2010-04-22 | Bridgestone Corp | 積層体 |
WO2012133370A1 (ja) * | 2011-03-29 | 2012-10-04 | 株式会社ブリヂストン | 熱線遮蔽性積層体及びそのフィルムロール |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPWO2015129758A1 (ja) * | 2014-02-25 | 2017-03-30 | 積水化学工業株式会社 | 合わせガラス用中間膜、合わせガラス用中間膜の製造方法及び合わせガラス |
US10906279B2 (en) | 2014-02-25 | 2021-02-02 | Sekisui Chemical Co., Ltd. | Interlayer film for laminated glass, method for manufacturing interlayer film for laminated glass, and laminated glass |
Also Published As
Publication number | Publication date |
---|---|
EP3202731A1 (en) | 2017-08-09 |
JP5933139B1 (ja) | 2016-06-08 |
RU2693107C2 (ru) | 2019-07-01 |
RU2017114659A (ru) | 2018-11-05 |
KR20170063434A (ko) | 2017-06-08 |
KR102452747B1 (ko) | 2022-10-07 |
CN106232549A (zh) | 2016-12-14 |
EP3202731B1 (en) | 2023-12-27 |
EP3202731A4 (en) | 2018-04-18 |
RU2017114659A3 (ja) | 2019-04-26 |
MX2017003745A (es) | 2017-06-30 |
JPWO2016052606A1 (ja) | 2017-04-27 |
US20170197383A1 (en) | 2017-07-13 |
JP2016166130A (ja) | 2016-09-15 |
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