WO2010036219A1 - Fenêtres anti-écaillage - Google Patents

Fenêtres anti-écaillage Download PDF

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Publication number
WO2010036219A1
WO2010036219A1 PCT/US2008/011144 US2008011144W WO2010036219A1 WO 2010036219 A1 WO2010036219 A1 WO 2010036219A1 US 2008011144 W US2008011144 W US 2008011144W WO 2010036219 A1 WO2010036219 A1 WO 2010036219A1
Authority
WO
WIPO (PCT)
Prior art keywords
glass
thickness
ionomer
laminate
glass laminate
Prior art date
Application number
PCT/US2008/011144
Other languages
English (en)
Inventor
Nelson Bolton
Novis Smith
Original Assignee
Agp Plastics, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Agp Plastics, Inc. filed Critical Agp Plastics, Inc.
Priority to PCT/US2008/011144 priority Critical patent/WO2010036219A1/fr
Publication of WO2010036219A1 publication Critical patent/WO2010036219A1/fr

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
    • B32B17/10743—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 acrylate (co)polymers or salts thereof
    • 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
    • B32B17/10009—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
    • B32B17/10128—Treatment of at least one glass sheet
    • B32B17/10137—Chemical strengthening

Definitions

  • the present invention relates to improved transparent composite light weight windows for vehicles and transportation applications with maximum impact resistance to a real weight with greater than 97% transmittance and less than 5% haze.
  • Laminated windshields, windows, and back lights for automobiles have been laminated from the beginning of the automobile.
  • the automobile sidelights or side windows on the other hand have been tempered so that an impact on the breaking of the glass, the sidelights break into small pieces (discs) safely to minimize harm to the occupants.
  • U.S. Patent No. 4,125,669 to Triebel et al discloses a laminated safety glass which utilizes a thick outside layer of silicate glass which is bonded to a polycarbonate pane of at least 1.5 mm thick.
  • U.S. Patent No. 4,312,903 to Molari discloses impact resistant, double glazed structures comprising a plurality of laminae selected from polycarbonate, glass and solid resinous materials.
  • the glass laminae faces the direction of impact and has a thickness from about 30 to 220 mils.
  • the structure utilizes relatively thick outward layers and relatively thin inward layers.
  • a light weight anti-spall laminated safety glass for windows less than 3/8 inch or 8 mm in thickness.
  • the safety glass comprises front and rear chemically treated or tempered glass of less than 1 mm in thickness, preferably 0.75 mm or less with an intermediate clear ionomer resin sheet which is about 2 mm to 6 mm in thickness.
  • the ratio for the thickness of the resin to that of the total thickness of the two sheets of chemically strengthened or tempered glass is 0.14 to 1.3.
  • the transmittance is greater than 97% and less than 50% haze.
  • the resins used in the invention are the lithium or sodium neutralized copolymers of ethylene and acrylic or methacrylic acid having an acid content of from 15 to 22% by weight.
  • the resin is crosslinked with a diamine.
  • the present invention relates to optimum or maximum impact resistance windows which are less than 3/8 inch or 8 mm in thickness. More particularly, there is provided a safety glass laminate of less than 8 mm in thickness comprising front and rear tempered or chemically strengthened glass with sodium ion or lithium ion neutralized or partially neutralized ionomer interlayer having a thickness less than 1 mm, preferably 0.75 mm or less. The ratio of the ionomer to that of the total thickness of the two sheets of glass is about 0.14 to .3.
  • the ionomers are the sodium or lithium neutralized and or partially neutralized to 35 to 100% copolymers of ethylene acrylic or methacrylic acid with the acid content being from about 17 to 22% by weight which are obtained as described in U.S. Patent No. 4,799,346.
  • a amino crosslinking agent such as bis (1,3-aminomethyl) cyclohexane and bis aminomethyl dicyclohexane.
  • the present invention describes this optimum or maximum impact resistance per thickness construction for windows less than 3/8" or 8 mm.
  • the ratio of the resin thickness to glass thickness would be in the range of 0.14 to 1.3 for these transparent thin composite windows which are under 8 mm in thickness.
  • Glass is needed to prevent scratching and abrasion of the high impact plastic resin sheet which causes haze and discoloration and provide stiffness as a laminar composite construction. It does not contribute to the maximum impact resistance for this composite window based on weight except as part of the synergistic laminar composite construction.
  • the impact resistance of the laminated window/sidelight is due to the resin sheet which should be as thick as possible within the limitations of the thickness allowed for the sidelight or window.
  • the glass should be as thin as possible since it provides the scratch resistance and best optical qualities for the composite transparent sheet and also adds the stiffness needed on the outside of this thin composite sheet laminate.
  • the best optically clear, highest impact resins are the lithium or sodium neutralized copolymers of ethylene and acrylic or methacrylic acid with the acid content being from 15 to 22% by weight. These resins are best bonded to thin chemically strengthened glass sheet which is less than 1 mm thick and preferably 0.75 mm or less. This combination of the ultra thin chemically strengthened glass with the lithium or sodium neutralized copolymers of ethylene and acrylic or methacrylic acid give the maximum impact resistance per mm thickness for these optically clear laminated windows (sidelights) under 8 mm total thickness. The most effective ratio for the thickness of the resin to that of the total thickness of the two sheets of chemically strengthened glass are 0.14 to 1.3 for the total thickness under 8 mm.
  • the laminates have a transmittance greater than 97% with less than 5% haze.
  • the ionomer used may already be partially neutralized with up to 90% of sodium or lithium ion.
  • a particular example of such a resin is "SURLYN" 1601, manufactured by the Polymer Products Department of the DuPont Company.
  • a cross-linked partially sodium neutralized ethylene-acrylic acid ionomer resin was added to the resin port of a small extruder having an extruding barrel temperature which was maintained at 325 degrees-400 degrees Fahrenheit.
  • a film was extruded and cut into a twelve inch square of 0.75 mm thickness and stacked between a pair of 0.75 millimeter of chemically strengthened glass plates.
  • the assembly was placed in a so- called "polymer" bag of the type disclosed in U.S. Patent No. 3,311,517 to Keslar et al.
  • the bag comprises an outer ply of polyethylene terephthalate and an inner ply of polyethylene bonded thereto.
  • the bag was inserted into a second bag of the same material, evacuated and sealed.
  • the sealed unit was placed in an anotclave at 255 degrees Fahrenheit for three minutes under 150-200 psi pressure in a vacuum. The unit was then cooled to room temperature and the pressure reduced. The assembly was removed from the autoclave and the bags and plastic wrapping were removed from the assembly.
  • the resulting windshield is then ready to insert into a suitable support or frame and secured therein.
  • Example 2 Following the procedure of Example 1, a 12 inch square laminate was prepared with an outer and inner layer of a 4 mm chemically strengthened glass plate, a 2 mm of a chemically strengthened glass plate and a 4 mm interlayer of the resin of Example 1.
  • a 5 inch diameter iron ball was suspended as a pendulum.
  • the laminate was mounted in a vertical position and the ball was pulled back thirty-six inches from the object and permitted to fall and hit the laminate.
  • the laminate shattered on impact.
  • the resin prevented any penetration of sharp pieces from the outer layer.
  • the inner layer shattered into chards of about 1 A" which were projected.
  • a 12 inch square laminate was prepared with an outer layer of 0.25 chemically strengthened glass, an inner layer of a 2 mm chemically strengthened glass and an interlayer of 6 mm thick ionomer.
  • a hit by the ball resulted in the outer layer breaking into powder at the point of strike with no penetration of glass through the interlayer and the innerlayer shattering in pieces of glass being projected.
  • Example 1 The laminate of Example 1 was subjected to the same conditions of Tests 1 and 2. The results were that the outer and inner glass plates were powdery at point of impact.
  • the thickness of the outer glass plate and the thickness of the interlayer were not a factor in preventing chards of glass from being projected at an occupant of an automobile when a sidelight is struck by a propelled object.
  • the thinness of the outer layer and the interlayer were important to arrive at a thin light weight laminate.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Joining Of Glass To Other Materials (AREA)
  • Laminated Bodies (AREA)

Abstract

L'invention concerne un verre feuilleté léger anti-écaillage destiné à être utilisé dans des fenêtres latérales d’automobiles et autres vitrages. Le verre feuilleté est constitué de plaques minces extérieure et intérieure en verre renforcé chimiquement et d’une couche intermédiaire mince d’un ionomère neutralisé au sodium ou au lithium.
PCT/US2008/011144 2008-09-25 2008-09-25 Fenêtres anti-écaillage WO2010036219A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/US2008/011144 WO2010036219A1 (fr) 2008-09-25 2008-09-25 Fenêtres anti-écaillage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2008/011144 WO2010036219A1 (fr) 2008-09-25 2008-09-25 Fenêtres anti-écaillage

Publications (1)

Publication Number Publication Date
WO2010036219A1 true WO2010036219A1 (fr) 2010-04-01

Family

ID=42059971

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2008/011144 WO2010036219A1 (fr) 2008-09-25 2008-09-25 Fenêtres anti-écaillage

Country Status (1)

Country Link
WO (1) WO2010036219A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012073030A1 (fr) 2010-12-01 2012-06-07 Pilkington Group Limited Vitrage stratifié
NL2009706C2 (nl) * 2012-10-26 2014-04-29 Aviat Glass & Technology B V Glaslaminaat, hechtlaag, en voertuig omvattende een dergelijk glaslaminaat.
WO2014168481A1 (fr) * 2013-04-11 2014-10-16 Aviation Glass & Technology B.V. Miroir de véhicule, et procédé de fabrication d'un tel miroir
EP2879868A4 (fr) * 2012-08-03 2016-04-13 Corning Inc Vitrages de sécurité de faible poids transparent multi-couches

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4663228A (en) * 1983-05-03 1987-05-05 Advanced Glass Systems Corp. Laminated safety glass
US20070289693A1 (en) * 2006-06-15 2007-12-20 Anderson Jerrel C Thermoplastic resin compositions suitable for use in transparent laminates
US20080044666A1 (en) * 2006-08-17 2008-02-21 Anderson Jerrel C Amine-neutralized ethylene acid copolymers, shaped articles and laminates produced therefrom

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4663228A (en) * 1983-05-03 1987-05-05 Advanced Glass Systems Corp. Laminated safety glass
US20070289693A1 (en) * 2006-06-15 2007-12-20 Anderson Jerrel C Thermoplastic resin compositions suitable for use in transparent laminates
US20080044666A1 (en) * 2006-08-17 2008-02-21 Anderson Jerrel C Amine-neutralized ethylene acid copolymers, shaped articles and laminates produced therefrom

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012073030A1 (fr) 2010-12-01 2012-06-07 Pilkington Group Limited Vitrage stratifié
EP2879868A4 (fr) * 2012-08-03 2016-04-13 Corning Inc Vitrages de sécurité de faible poids transparent multi-couches
NL2009706C2 (nl) * 2012-10-26 2014-04-29 Aviat Glass & Technology B V Glaslaminaat, hechtlaag, en voertuig omvattende een dergelijk glaslaminaat.
WO2014084725A1 (fr) * 2012-10-26 2014-06-05 Aviation Glass & Technology B.V. Stratifié en verre, couche adhésive et véhicule comprenant un tel stratifié en verre
WO2014168481A1 (fr) * 2013-04-11 2014-10-16 Aviation Glass & Technology B.V. Miroir de véhicule, et procédé de fabrication d'un tel miroir
CN105246685A (zh) * 2013-04-11 2016-01-13 航空玻璃技术有限公司 车辆镜以及用于制造该镜的方法

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