WO1998055294A1 - Laminated glass resistant to uv radiation - Google Patents
Laminated glass resistant to uv radiation Download PDFInfo
- Publication number
- WO1998055294A1 WO1998055294A1 PCT/FR1998/001115 FR9801115W WO9855294A1 WO 1998055294 A1 WO1998055294 A1 WO 1998055294A1 FR 9801115 W FR9801115 W FR 9801115W WO 9855294 A1 WO9855294 A1 WO 9855294A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- polyester film
- resin
- glazing according
- glazing
- filter
- Prior art date
Links
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
- 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
- B32B17/10706—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 being photo-polymerized
-
- 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
-
- 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
- B32B17/10165—Functional features of the laminated safety glass or glazing
- B32B17/10174—Coatings of a metallic or dielectric material on a constituent layer of glass or polymer
-
- 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
- B32B17/10165—Functional features of the laminated safety glass or glazing
- B32B17/10247—Laminated safety glass or glazing containing decorations or patterns for aesthetic reasons
- B32B17/10256—Laminated safety glass or glazing containing decorations or patterns for aesthetic reasons created by printing techniques
- B32B17/10284—Laminated safety glass or glazing containing decorations or patterns for aesthetic reasons created by printing techniques on intermediate layer
Definitions
- the present invention relates to laminated glazing resistant to UV rays.
- laminated glazings comprising at least two rigid plates between which is inserted at least one layer of flexible plastic material (s).
- the rigid plate is most often made of glass, but can also be made of rigid plastic.
- the presence of the layer (s) of flexible plastic material (s) in the laminated glazing has the function of improving the mechanical properties of the glazing, in particular the impact resistance, and the thermal and acoustic insulation properties.
- laminated glazings consisting of two rigid outer plates, between which are disposed a polyester film and at least one layer of poly (vinylbutyral) (PVB).
- PVB poly (vinylbutyral)
- STADIP poly (vinylbutyral)
- the polyester film is generally introduced as a film carrying a graphic, holographic, metallized or metallized holographic representation; and PVB is introduced not only as a bonding resin on either side of the polyester film but also as a reinforcing resin to improve the mechanical properties of the glazing.
- PVB has filter properties against UV rays and protects the polyester film from aging due to UV rays, that is to say from yellowing and hardening. In addition, the PVB protects the representation, which is possibly supported by the polyester film. Unfortunately, PVB has four drawbacks.
- the first of these drawbacks is that it does not provide optimal impact resistance; the second drawback is that its range of thermal stability is low, hence uncertain for safety; the third drawback is that it requires significant equipment for its implementation: in fact PVB is used in the form of flexible plates that one places between two rigid plates of laminated glazing and the adhesion to said plates is obtained by a heat treatment under pressure; the fourth drawback is that it is sensitive to water, which results in bleaching and a reduction in its attachment properties on the rigid plates to which it adheres. If the PVB layer is replaced by a polyester layer, it is necessary to add a UV filter to the said layer because the polyester does not by itself have UV filtering properties.
- the polymerization must be carried out in situ to ensure bonding; this results in three major drawbacks: first, a hardener must be added to the monomer resin, hence a risk of heterogeneity of the mixture and a risk of causing irregularities in the glazing, which are liable to disturb the homogeneity glazing and deforming the images seen through the glazing or the image of the representation carried by the polyester film; secondly, the implementation is always delicate because, after mixing the hardener, the manufacturer of the product has only a fairly limited time to pour the resin between the rigid plates of the laminated glazing; thirdly, the fact of adding a UV filter to the mixture before polymerization always causes a clouding of the transparency which is very troublesome for the optical qualities of the laminated glazing obtained.
- a polyester film containing UV filters is used. Indeed, if a polyester film is produced containing a UV filter: - or else, the film is mixed with the resin after polymerization and before extrusion; - Or, the film is treated after extrusion; but, in both cases, the polymerization of the polyester is not carried out in the presence of the filter and it results therefrom that no transparency disorder is observed.
- the use of such a film makes it possible not only to avoid the degradation of the polyester film, but also to avoid, in all cases, the degradation of the performance supported by the polyester film.
- the graphic representation is made in the mass of the polyester film and, in this case, surprisingly, the presence of the UV filter in the film prevents degradation; or else the graphic representation is carried by the film on its face not directly irradiated by UV rays; or else the graphic representation is carried by the film on its face situated on the side of the UV irradiation and, in this case, the graphic representation is covered by a polyester film comprising a UV filter thereby forming a sandwich film.
- the present invention therefore relates to a laminated glazing comprising two external plates of rigid transparent material, at least one polyester film disposed between the two above-mentioned external plates and at least one layer of resin forming a flexible interlayer between the two plates.
- external characterized in that the resin of a resin layer does not, by itself, have UV filter properties and that the polyester film contains at least one UV filter.
- the polyester film participates in the impact resistance of laminated glazing; the fact of having incorporated a UV filter makes it possible to maintain the properties of the laminated glazing thus formed over time.
- the laminated glazing comprises two external plates of rigid material: it can comprise at least one similar plate interposed between the external plates.
- This rigid material is, as explained above, glass or a transparent rigid plastic, such as a polymethacrylate, in particular polymethyl methacrylate.
- the resin in a resin layer is a transparent polymer capable of forming a flexible film and having no UV screening properties. It preferably comprises a high impact resistance: it is advantageously capable of being crosslinked by irradiation with UV rays. It can be chosen from the group formed by unsaturated polyesters, poly carbonates, polymethacrylates or polyacrylates, in particular acrylic urethane polymers. Among the resins which can be used in particular, mention may be made of the resin sold under the trade name "CONLOC" by the company "BOHLE” or under the trade name "VITRALIT" by the company "CVA".
- the polyester film is advantageously a poly (ethyl col terephthalate) film.
- the polyester film used contains at least one UV filter.
- This UV filter can be introduced into the polyester film by any known means, such as grafting of molecules on the surface, deposition on the surface or addition in the mass.
- the UV filter is, for example, a benzophenone, a benzotriazole, a substituted acrylonitrile or a phenol-nickel complex, these compounds being well known to those skilled in the art. Mention may more particularly be made of the UV filters sold under the name "UV-SHIELD" by the company "GAMCOLOR”.
- the amount of UV filter used varies depending on the UV filter and the polyester. It is generally between 0.1 and 1.5% by weight relative to the weight of the polyester film.
- the polyester film can be uniformly colored or bear a graphic or holographic representation.
- the UV filter is introduced into said film.
- the representation can be a graphic printing set up in any way, in particular by screen printing; optionally, the polyester film can be mass-dyed.
- graphic representation is meant according to the present invention any drawing, pattern or inscription obtained by any process.
- the polyester film can be glued.
- the film is fixed by the glued part against a plate of transparent rigid material of the glazing; it can in particular be fixed by gluing on the internal face of one of the two external plates of the glazing.
- the polyester film bears a graphic representation, such bonding is provided on the internal face of the external plate which receives UV radiation, the layer of resin, which forms a flexible interlayer, being disposed between the non-glued side of the film.
- polyester and the rigid plate that does not receive UV radiation. It is advantageous to use an acrylic type adhesive which promotes UV filtration.
- polyester film When the polyester film is not glued, it is preferably placed between two layers of resin forming flexible interlayer.
- Laminated glazing can be prepared by any known process.
- the first external rigid plate is placed on a horizontal table and a double-sided adhesive strip is applied around the periphery of the plate. It is understood that one could use any other material capable of sticking to the rigid plates and of forming between them a bead of uniform thickness.
- This adhesive strip defines the spacing between the external plates of the glazing and therefore the thickness of the layer of resin forming flexible interlayer; the strip serves as a seal.
- a second rigid external plate is deposited on the adhesive strip and the two rigid plates are pressed against each other.
- the protective layer of the adhesive strip has been maintained over a certain length so as to provide at least one opening allowing the introduction of the resin between the two external plates and an opening so that air can escape; these two openings can form only one as long as it is large enough.
- the resin is then injected into the volume formed between the two rigid plates.
- the resin When the resin is mixed with a catalyst and / or hardener, it is injected between the rigid plates and allowed to crosslink.
- the glazing is passed through a UV oven equipped with appropriate lamps.
- the process for manufacturing the laminated glazing takes place as described above, the polyester film being bonded to the side facing inwards of one of the rigid plates.
- the preparation is carried out on a vertical table and the polyester film is suspended under tension, parallel to the rigid plates: the resin is poured on either side of the polyester film to constitute two layers of resin forming flexible inserts on either side of the polyester film.
- a double-sided adhesive strip sold under the name “3M No. 4910" by the company “3M” is attached to the periphery of this plate.
- the protective film was removed from the adhesive strip except over a length of 1 cm located at one of the upper corners of the first glass plate.
- Parallel to the first plate is suspended a poly (ethyl glycol terephthalate) film containing 0.1% by weight of an UV filter sold under the trade name "TINUVIN 571" by the company "CIBA-GEIGY”.
- An image was printed by screen printing on one side of this film using organic inks from one of the ranges:
- a second glass plate identical to the first is then applied to the adhesive strip.
- the table is tilted in a horizontal position and the air escapes through the injection opening. After filling, the injection opening is sealed using a hot-melt adhesive.
- the resin is then polymerized in a tunnel oven equipped with UV-A lamps.
- the residence time of the plate is 20 seconds.
Landscapes
- Laminated Bodies (AREA)
- Joining Of Glass To Other Materials (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98928421A EP0921940A1 (en) | 1997-06-04 | 1998-06-03 | Laminated glass resistant to uv radiation |
AU80253/98A AU8025398A (en) | 1997-06-04 | 1998-06-03 | Laminated glass resistant to uv radiation |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9706896A FR2764284B1 (en) | 1997-06-04 | 1997-06-04 | SHEET GLASS RESISTANT TO UV RAYS |
FR97/06896 | 1997-06-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998055294A1 true WO1998055294A1 (en) | 1998-12-10 |
Family
ID=9507589
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1998/001115 WO1998055294A1 (en) | 1997-06-04 | 1998-06-03 | Laminated glass resistant to uv radiation |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0921940A1 (en) |
AU (1) | AU8025398A (en) |
CA (1) | CA2262589A1 (en) |
FR (1) | FR2764284B1 (en) |
WO (1) | WO1998055294A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6811841B1 (en) | 2003-04-15 | 2004-11-02 | 3M Innovative Properties Company | Light-stable structures |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES1050634Y (en) * | 2001-11-28 | 2002-08-16 | Curvados Cristales Sa | SOLAR ATTENUATOR PLURILAMINATED GLASS |
ES2353778B1 (en) * | 2008-07-28 | 2011-10-03 | Agustin Gifre Ramon | DECORATIVE PANEL OF BACKLIGHTED MULTI-GLASS GLASS. |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0019556A1 (en) * | 1979-05-17 | 1980-11-26 | Bonnet, Albert Lucien Léon | Safety device for the windscreen of a motor vehicle |
FR2495130A1 (en) * | 1980-12-03 | 1982-06-04 | Solar Control France | Protective laminated glazing incorporating polyester interlayer - to reduce wt. for given performance |
EP0160510A2 (en) * | 1984-04-24 | 1985-11-06 | Bridgestone Corporation | Sandwich glass |
EP0396349A2 (en) * | 1989-05-01 | 1990-11-07 | Bridgestone Corporation | Sandwich glass |
GB2264259A (en) * | 1992-02-24 | 1993-08-25 | Rankins | Laminated glazing material |
FR2706446A1 (en) * | 1993-06-18 | 1994-12-23 | Saint Gobain Vitrage Int | Laminated glazing with an apparent pattern. |
-
1997
- 1997-06-04 FR FR9706896A patent/FR2764284B1/en not_active Expired - Fee Related
-
1998
- 1998-06-03 AU AU80253/98A patent/AU8025398A/en not_active Abandoned
- 1998-06-03 WO PCT/FR1998/001115 patent/WO1998055294A1/en not_active Application Discontinuation
- 1998-06-03 EP EP98928421A patent/EP0921940A1/en not_active Withdrawn
- 1998-06-03 CA CA 2262589 patent/CA2262589A1/en not_active Abandoned
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0019556A1 (en) * | 1979-05-17 | 1980-11-26 | Bonnet, Albert Lucien Léon | Safety device for the windscreen of a motor vehicle |
FR2495130A1 (en) * | 1980-12-03 | 1982-06-04 | Solar Control France | Protective laminated glazing incorporating polyester interlayer - to reduce wt. for given performance |
EP0160510A2 (en) * | 1984-04-24 | 1985-11-06 | Bridgestone Corporation | Sandwich glass |
EP0396349A2 (en) * | 1989-05-01 | 1990-11-07 | Bridgestone Corporation | Sandwich glass |
GB2264259A (en) * | 1992-02-24 | 1993-08-25 | Rankins | Laminated glazing material |
FR2706446A1 (en) * | 1993-06-18 | 1994-12-23 | Saint Gobain Vitrage Int | Laminated glazing with an apparent pattern. |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6811841B1 (en) | 2003-04-15 | 2004-11-02 | 3M Innovative Properties Company | Light-stable structures |
Also Published As
Publication number | Publication date |
---|---|
CA2262589A1 (en) | 1998-12-10 |
EP0921940A1 (en) | 1999-06-16 |
FR2764284B1 (en) | 1999-08-13 |
FR2764284A1 (en) | 1998-12-11 |
AU8025398A (en) | 1998-12-21 |
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