CA1243060A - Encapsulated glazing product_ - Google Patents

Encapsulated glazing product_

Info

Publication number
CA1243060A
CA1243060A CA000481690A CA481690A CA1243060A CA 1243060 A CA1243060 A CA 1243060A CA 000481690 A CA000481690 A CA 000481690A CA 481690 A CA481690 A CA 481690A CA 1243060 A CA1243060 A CA 1243060A
Authority
CA
Canada
Prior art keywords
glazing
glass
gasket
sheet
lacerative
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
CA000481690A
Other languages
French (fr)
Inventor
Siegfried H. Herliczek
Edward W. Curtze
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pilkington North America Inc
Original Assignee
LOF Glass 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 LOF Glass Inc filed Critical LOF Glass Inc
Application granted granted Critical
Publication of CA1243060A publication Critical patent/CA1243060A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04Interconnection of layers
    • B32B7/12Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • CCHEMISTRY; METALLURGY
    • C03GLASS; MINERAL OR SLAG WOOL
    • C03CCHEMICAL 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
    • C03C27/00Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00Moulds or cores; Details thereof or accessories therefor
    • B29C33/0038Moulds or cores; Details thereof or accessories therefor with sealing means or the like
    • B29C33/0044Moulds or cores; Details thereof or accessories therefor with sealing means or the like for sealing off parts of inserts projecting into the mould cavity
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14336Coating a portion of the article, e.g. the edge of the article
    • B29C45/14434Coating brittle material, e.g. glass
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/68Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
    • B29C70/74Moulding material on a relatively small portion of the preformed part, e.g. outsert moulding
    • B29C70/76Moulding on edges or extremities of the preformed part
    • B29C70/763Moulding on edges or extremities of the preformed part the edges being disposed in a substantial flat plane
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06Layered 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
    • B32B17/10Layered 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
    • B32B17/10005Layered 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
    • B32B17/10009Layered 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
    • B32B17/10018Layered 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 only one glass sheet
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06Layered 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
    • B32B17/10Layered 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
    • B32B17/10005Layered 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
    • B32B17/10165Functional features of the laminated safety glass or glazing
    • B32B17/10293Edge features, e.g. inserts or holes
    • B32B17/10302Edge sealing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06Layered 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
    • B32B17/10Layered 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
    • B32B17/10005Layered 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
    • B32B17/10165Functional features of the laminated safety glass or glazing
    • B32B17/1033Laminated safety glass or glazing containing temporary protective coatings or layers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06Layered 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
    • B32B17/10Layered 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
    • B32B17/10005Layered 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
    • B32B17/1055Layered 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
    • B32B17/10761Layered 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60JWINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J10/00Sealing arrangements
    • B60J10/70Sealing arrangements specially adapted for windows or windscreens
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2075/00Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2709/00Use of inorganic materials not provided for in groups B29K2703/00 - B29K2707/00, for preformed parts, e.g. for inserts
    • B29K2709/08Glass
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/50Properties of the layers or laminate having particular mechanical properties
    • B32B2307/554Wear resistance
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2367/00Polyesters, e.g. PET, i.e. polyethylene terephthalate
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2581/00Seals; Sealing equipment; Gaskets
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2605/00Vehicles
    • B32B2605/08Cars
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/24Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24777Edge feature

Abstract

ABSTRACT OF THE DISCLOSURE
A glazing unit comprised of a glass substrate and a laceration inhibiting shield supported by and extending over what would otherwise be an exposed surface of the substrate. A
gasket or frame member composed of a synthetic polymer extends around a major portion of the periphery of the glass substrate and shield and is adhered to the marginal edge surfaces of each, such gasket having been formed in situ adjacent the said periphery.

Description

~2430~0 The present invention relates generally to an encapsulated glazing product including a glass substrate having a layer of plastic material secured thereto and presenting an exposed surface, and a polymeric frame member surrounding a major portion of the peripheral regions of the glass and plastic layer assembly.
In the early stages of the automobile industry, single sheets of ordinary or annealed glass were employed as windshields. As it became evident that thls type of windshield presented a considerable safety hazard, the single sheets of annealed glass were replaced with single sheets of heat treated or tempered glass. Thereafter, as laminated safety glass was developed to reduce the severity of lacerative injuries, its use in automobile windshields greatly increased until today, when almost all automotive windshields are constructed of some type of laminated glass. However, the use of laminated glazing structures in all of the openings of automotive vehicles, besides being very costly, can substantially add to the weight of the vehicle thereby adversely affecting fuel economies which are of great importance at the present time. Therefore, with a mind for developing as safe a vehicle as possible within acceptable weight parameters, attention has been given to developing anti-lacerative glazing structures for automotive vehicles. The tnajor thrust of the present invention is directed to glazing structures for use in vehicles which structures have inherent safety characteristics and are nevertheless of a reduced overall weight. It is felt to be advantageous to retrace the history of vehicular glazing structures which are hereinafter briefly addressed.

~3~

Today, typically, an assembly of laminated glass of the type utilized in vehicle windshields consists of two sheets of glass bonded together with a thin plastic interlayer, such as a sheet polyvinyl butyral, for example. In the event of an impact on a laminated glass windshield sufficient to break the glass, the plastic interlayer functions to bind the glass fragments together, thus reducing the risk of injury to a driver or passenger as a result of flying glass or contact with the windshield. Further developments with this type of laminated glass, such as those disclosed in United States Patent No. 3,231,461, have resulted in laminated windshields with improved penetration resistance. Consequently, in view of the ever growing recognition of the necessity for increased safety precautions, continuing efforts have been and are still being made to appreciably reduce the injury producing potential of an automobile windshield.
Recently, it has been found that the addition of a second plastic layer bonded to the exposed surface of the inboard glass sheet of the laminated windshield further increases the safety efEectiveness of the windshield. The second plastic layer has typically been termed a protective laceration inhibiting shield since it has been found that the additional plastic layer will appreciably reduce the number and severity of lacerative injuries to persons thrown against the windshield under all impact conditions. Further, it has been found that the laceration shield when produced under certain conditions of manufacture improves the ability of the laminated windshield to decelerate the movement of a person thrown against the windshield, while also increasing the penetration resistance of the windshield as compared to conventional laminated windshields. Also, the laceration shield reduces the amount of flying glass and, thus, the injury to occupants as a result of objects that may be thrown against the windshield from overpasses or elsewhere outside the vehicle.
An example of an automotive windshield which incorporates, as part oF its laminated structure, a protective laceration shield bonded to its inboard glass surface is disclosed in United States Patent No. 4,242,403. In this patent, the laceration shield includes a penetration resisting multi-layer body consisting of an inner layer of relatively soft, extensible plastic material such as polyvinyl butyral, for example, which is adhered to the inboard surface of the windshield, an intermediate layer of more durable plastic such as a polyester, and an outer coating of an abrasion resistant material.
It will be understood that an unlaminated glass sheet could be provided in thickness sufficient to preclude shattering. However, such a glass product would not be acceptable to the automotive industry because it would result in a part employing too much weight.
While automotive safety standards in the United States require laminated structures for windshields, side lights and backlights may be fabricated of single glass sheets which are tempered. Since, in a rather substantinl number oi vehicle collisions, occupants are callsed to be propelled through side lights, continued attention must also be given to the safety considerations of the construction of side light and back light structures.
It has been found that a thinner glass part may be produced from a combination of a sheet of glass and a plastic layer to provide a lighter weight product having acceptable scratch and shatter resistance properties. Assuming that the appropriate bonding is achieved between the glass and plastic sheet, the product will shatter in many small pieces of glass, 3~

a larger portion of which will tend to cling to the plastic with obvious safety effects.
An important aspect of the design of a glass-plastic product for use in the automotive industry is the manner in which such products absorb energy upon the impact of the type experienced during an automobile collision. It is a desideratum of the designers to develop a structure for use in vehicular applications which will absorb the energy upon impact on a curve which minimizes injury to automobile occupants.
It has been found that one method for applying a plastic layer to one surface of a single sheet of glass is disclosed in United States Patent No. 3,806,387. In this method, a sheet of glass, a layer of adhesive, and a layer of thin transparent plastic sheeting are assembled in a stack to produce a laminated assembly. A second sheet of forming glass conforming to the configuration of the sheet of glass in the laminated assembly is then placed on top of the plastic sheet.
The surface of the glass forming sheet which is placed adjacent to the plastic sheet is coated with a demolding agent to prevent any adhesion between the glass forming sheet and the plastic sheet. Next, the spaces between the individual lamina are evacuated and the laminated assembly is positioned in fln autoclave. The autoclave applies pressure to the exterior surfaces of the laminated assembly while heating the assembly to a temperature which causes bonding between the glass sheet and the plastic sheet. After the assembly is removed from the autoclave, the forming sheet can be removed from the stack.
The structures and methods of producing the structures of the prior art have failed to fully contemplate the necessity for producing anti-lacerative glazing structures which can be used in side light, back light and sun roof applications as well as for windshield applications.

~Z43C~

The present invention contemplates an anti-lacerative glazing structure and method of producing the same which cooperate to increase the safety levels of vehicular glazings within acceptable economic and weight parameters.
A complete multi-layer glazing unit as contemplated by this invention includes, essentially, a glass substrate, and a laceration inhibiting shield supported by and extending over what would otherwise be an exposed surface of the substrate.
The glass substrate may take such varied forms as the 1() conventional laminated safety glass structures currently required in automobile windshields in this country, the single sheet heat strengthened or tempered glass glazing commonly employed in automobile side lights, back lights and sun roofs, or an annealed glass sheet. A gasket or frame member composed of a synthetic polymer extends around a major portion of the periphery of the glass substrate and shield and is adhered to the marginal edge surfaces of each, such gasket having been formed in situ adjacent such periphery and having assumed, while confined, intimate contact with the portions to which it is adhered.
An object of the invention is to produce an anti-lacerative glazing structure for use in side L;ght, bnck light and sun roof, as well as windshield, applications in the vehicular industry Another object of the invention is to produce an anti-lacerative structure which embodies inherent physical characteristics able to rapidly dissipate the energy of an article impacting a relatively small area of the structure throughout the entire area of the product.
Another object of the invention is to produce an anti-lacerative structure for vehicular use having a polymeric frame formed in situ which encapsulates the peripheral portions 3~iO

of the structure.
According to the preser.t invention, there is provided a glazing product for use in closing an opening in a structure, characterized by a main body of a generally transparent sheet of glazing material, a layer of transparent plastic material adhered in superimposed and substantially coextensive relation to at least one surface of said sheet of glazing material) and a gasket formed in situ about the peripheral marginal edges of said main body and said layer and adhesively secured thereto.
Further in accordance with the invention, there is provided a glazing including a glass substrate having adhered to a major surface thereof a layer of plastic material, said plastic material having an exposed surface and being effective to provide increased anti-lacerative properties to the glass sheet when the glazing is impacted and the glass sheet broken, and a gasket extending about a ma30r portion of the periphery of the glazing and adhered to the adjacent marginal edge surfaces of both the glass substrate and plastic lflyer, said gasket having been polymerized in situ adjacent said edge surfaces and having assumed through the autogenous mechanism incident to its polymerization and cure whiLe confined intimate contact with said surfaces.
Also, according to this invention, there is provided a method of producing an anti-lacerative glazing product including a glass sheet and a gasket adhered to the periphery thereof, characterized by the steps of:
assembling into a superimposed stacked arrangement a glass substrate sheet and a plastic anti-lacerative sheet;
laminating said plastic sheet to said glass sheet to form an integral assembly;

positioning said integral assembly within the interior of a mold cavity formed by a plurality of ~Z~

cooperating die sections, said mold cavity having the shape and position, relative to said integral assembly, of the ultimate gasket, and enclosing the marginal surfaces of the assembly immediately adjacent the periphery thereof;
injecting into the mold cavity a composition which is capable upon cure to produce a gasket and, when cured in contact with the marginal surfaces of the integral laminated assembly, adheres thereto;
controlling the pressure at which the composition is injected into the mold cavity to one sufficiently low that the glass substrate sheet and plastic anti-lacerative sheet are not damaged;
controlling the temperature of the mold cavity, the injection of the composition and the amount of the composition injected so that the composition assumes upon curing intimate contact with the mold cavity and with the sheets of said integral assembly;
curing the composition and removing the resulting encapsulated anti-lacerative glazing product from the mold cavity.
In the accompanying drawings:
Fig. 1 ;9 a perspective view ox an anti-lacerative automotive windshield assembly embodying the features of the invention;
Fig. 2 is a fragmentary sectional view of the windshield assembly illustrated in Fig. 1, taken along line
2-2 thereof;
Fig. 3 is a top plan view of a mold section employed in forming the polymeric frame member on the glazing product illustrated in Figs. 1 and 2;
Fig. 4 is an enlarged fragmentary sectional view
3~

of the mold structure of Fig. 3 taken along line 4-4 thereof, and Fig. 5 is an enlarged fragmentary sectional view showing pad members for supporting a laminated structure during the production of an encapsulated windshield assembly incorporating the features of the invention.
It should be noted at the outset of this description that, while the embodiment of the invention illustrated in the drawings and described herein concerns an anti-lacerative windshield assembly consisting of a single sheet of glass, it will be appreciated that the invention can be readiLy incorporated in an anti-lacerative windshield consisting of a laminated composite employing two or more sheets of glass Also, while the preferred embodiment of the invention is described as a vehicle windshield, it will be appreciated that the assembly may also be advantageously employed as a side light or a rear light for vehicular use. Further, it will be understood that the glass sheet material can also be replaced by plastic sheet rnaterial to evolve a product having many of the same inherent advantages.
Referring to Figs. l and 2, there is shown one type of anti-lacerative glass assembly useful as an automotive windshield 10 which includes a sheet of glaRs 12 and a plastic anti-lacerative sheet 14 secured to one surface of the glass sheet 12 by an interlayer 16 of a relatively soft extensible plastic material.
In a preferred embodiment, the glass sheet 12 has a thickness of from 0.050 inch to 0.200 inch. Typically, the soft extensible plastic layer 16 has a thickness of from 0.005 to 0.045 inch and can be Eormed of a polyvinyl acetal such as polyvinyl butyral, for example. The anti-lacerative layer or sheet 14, typically is formed of a thickness in the range of ~Z~L3~6~J

from 0.002 to 0.007 inch and can be formed oE a polyester, for example.
Another material that may be employed as the plastic layer 16 is a scratch-resistant polyurethane, for example of the type disclosed in U.S. patent No. 3,979,548, which can be cast directly on a surface of the glass substrate 12 and is self-adhesive thereto or is pre-cast and then adhered to the glass through a suitable adhesive material as is well known in the art.
A frame member or gasket 18 is molded to surround the peripheral edge portions of the assembly including the glass sheet 12, the anti-lacerative layer 14, and the associated interlayer 16. The frame member 18 is typically formed of an elastomeric material which is advantageously applied by a reaction injection molding (RIM) process and, by the autogenous mechanism of the molding process, is securely affixed to the glass substrate and anti-lacerative layer.
The above described product can be readily integrally attached to the material defining the periphery or outline of a vehicle windshield opening, for example, during the manufacture of the vehicle.
It will be appreciated that the windshield assembly described above produces an extremely Raze and light weight structure which may be readily and economically installed in a vehicle during the vehicle manufacture. The resultant structure exhibits rather unexpected results from a safety standpoint. It is believed that by the Eormation of the frame 18, as an integral part of the assembly, the plastic anti-lacerative layer 14 and the frame 18 cooperate to dissipate energy over the entire area of the assembly when impacted by a projectile such as a human being during an automobile collision. By such expeditious energy dissipation, ~2~3~

the severity of injury, particularly head injuries, can be materially reduced. To more fully understand and appreciate the phenomenon, the assembly of the invention can be likened to a drumhead. In drumhead constructions, a membrane, such as animal hide, is stretched over the open end of a hollow cylinder and securely maintained in the stretched position by an adjustable tightening hoop or the like. The plastic layer 14 of the assembly described above is similar to the membrane of the drumhead, while the frame 18 functions in a manner similar to the drum hoop.

Accordingly, upon impact by an object against a limited area of the composite product, the energy of the impacting object is rapidly dissipated throughout the entire assembly. This is true even in the event there may be "let go's" or adhesive failures between the plastic layer 14 and the glass. In addition to its function to dissipate the impact energy, the plastic layer 14 cooperates with the frame member 18 to present a closure even in the event of glass breakage and failure of the bond between the glass and frame member, to militate against the penetration of the object completely through the assembly, and functions to assist in elastically causing the object, once the impact energy has been absorbed, to reverse its initial direction of motion flnd be flided in retrograde movement.
In producing the invention described above, the glass sheet 12 is initially formed into the desired shape to conform with the opening in the sheet metal of the vehicle into which the assembly of the invention is to be applied, and then typically a plastic composite of the layer 14 and the layer 16 are applied to a previously cleaned surface of the glass sheet 12 adapted to face inwardly of the associated vehicle. A cover sheet formed of a sheet of glass having the desired high :~Z~3~6~;) optical properties is placed against the exposed surface of the plastic layer 14 to assist in the bonding of the plastic composite to the inboard surface of the glass sheet 12. After the cover sheet has been positioned against the outer surface of the plastic layer 14, the air spaces between the individual laminae are evacuated to urge the individual laminae toward one another. This can be accomplished by utilizing an associated vacuum system which typically consists of a vacuum ring adapted to surround the peripheral edges of the assembly. The vacuum ring is attached to a source of vacuum which effectively cooperate to cause any air pockets between the individual laminae to be removed. The assembly having the vacuum ring attached is then placed in an autoclave unit designed to apply pressure to the exterior surfaces of the assembly while simultaneously heating the entire assembly to a predetermined temperature to cause the plastic interlayer 16 to bond the anti-lacerative sheet 14 to the associated inboard surface of the glass sheet 12. While in the autoclave, the vacuum ring can be connected to a source of vacuum to maintain vacuum during the bonding operation. Typically, the pressure within the autoclave is in the range of from 200 to 275 PSI while the temperature is in the range of from 250 F. to 325~ F. This temperature and pressure are typically maintained for approximately twenty (20) minutes to assure an effective bonding between the individual laminae.
After the then laminated assembly has been removed from the autoclave, the associated vacuum ring is removed.
Next, the associated cover sheet or cover plate can be removed from the laminated assembly and then the completed laminated assembly can be placed into the mold cavity 24 of a mold section 22 of a reaction injection molding device 20, as generally illustrated in Figs. 3 to 5, inclusive.

~3~

Referring to Figs. 3 through 5, there is shown a molding device 20 specifically adapted to form a gasket about the periphery of a laminated anti-lacerative assembly such as an automobile windshield, for example. The molding device 20 is comprised of a lower section 22 (a top plan view of which is shown in the left hand portion of Fig. 3) and an upper section 26 (a top plan view of which is shown in the right hand portion of Fig. 3). While the mold sectons 22 and 26 are typically formed of a metallic material such as steel or aluminum, for example, other types of substantially non-resilient material can be used. Suitable means, not shown, are provided to open and close the mold sections 22 and 26. Each of the mold sections 22 and 26 can be provided with passageways 28 and 30 for circulating a suitable coolant therethrough.
As shown in Figs. 4 and 5, the mold sections 22 and 26 are provided with recessed portions 32 and 34, respectfully, in facing relationship to one another such that, when the mold sections are closed, the recessed portions 32 and 34 cooperate to define a chamber 36 for receiving a glass sheet 12 on which a gasket is to be formed. When the mold sections are open, the laminated assembly is positioned on the lower .section 22 90 that the outer peripheral portion of the lower surface thereof rests on a resilient lower seal 38 posit;oned within a groove 40 formed in the upper surface of the lower section 22. After the laminated assembly is suitably positioned on the seal 38 of the lower mold section 22, the upper mold section 26 is lowered into position to enable the outer peripheral portions of the facing surfaces of the cooperating mold sections 22 and 26 to be clamped together in metal-to-meta] contact, as shown in Fig.
5. The upper mold section 26 carries a resilient upper seal 44 positioned in a groove 46 formed opposite the groove 40. The upper seal 44 cooperates with the lower seal 38 to press ~Z430~

yieldingly against the laminated product to effectively resiliently support the laminated product within the chamber 36.
In the drawings, the chamber 36 of the molding device 20 is slightly larger than the laminated product to avoid any glass-to-metal contact between the laminated product and the metallic mold sections 22 and 26. However, it will be appreciated that the chamber 36 can be formed of any shape as long as the chamber is sufficiently large to avoid any glass-to-metal contact between the laminated product and the metallic mold sections. For example, the portions of the mold sections 22 and 26 which are below and above the central portion of the laminated product can be removed such that each mold section will be generally ring-shaped.
The seals 38 and 44 are preferably formed of a silicone rubber material and can be secured within the respective grooves 40 and 46 by means of a suitable adhesive.
In addition to resiliently supporting the laminated product within the chamber 36, the seals 38 and 44 cooperate with selected portions of the laminated product and the mold sections 22 and 26 for defining a gasket forming cavity 50 utilized to form an encapsulating gasket. The cavity 50 communicates with a gate 52 and an inlet means 54 for receiving from an associated nozzle member 56 a composition which i8 capable of polymerization to produce, for example, a microcellular elastomeric gasket. Typically, the gasket forming material is adapted to polymerize and cure in situ on the peripheral portion of the laminated product and the process by which it is formed is the well known reaction injection molding process.

The first step in producing the gasket 18 for the laminated windshield 10 involves thorough cleaning of the ~2'~3~

front, rear and peripheral edges of the glass sheet material 12, and the layer 14 to prepare the surfaces for adherence of the gasket 18. In this respect, in the event the layer 14 includes a polyester anti-lacerative sheet it is often desirable that an abrasion resistant coating be applied to the exposed surface thereof. If this is the case, it is preferred that this coating be removed from the areas of the polyester sheet to be covered by and adhered to the gasket prior to formation of the gasket.
The next step is applying a primer coating to at least the previously cleaned glass surfaces. Satisfactory results have been achieved by initially employing a layer of a product which is commercially available under the designation "Betaseal, Glass Primer 435.18 Commercial Grade", from Essex Chemical Company, Clifton, New Jersey, U.S.A. The glass bond area is initially wiped with the primer to form the layer, which acts as a coupling agent. The primer material is a clear moisture-sensitive primer comprising gamma-aminopropyltriethoxysilane, which promotes adhesion between other Betaseal products and glass. If desired, primers of this type may also be applied to anti-lacerative sheet areas to be covered by the gasket-forming material.
Following the application of the layer above mentioned, a second primer layer is applied over the primary layer. Satisfactory results can be obtained by utilizing a product which is commercially available under the designation "Betaseal, Glass Primer 435.20 Commercial Grade", from Essex Chemical Company. This material is a blackout primer which prevents ultraviolet degradation of urethane sealants and adhesives and assists in the rapid formation of a hydrolytically stable bond between the glass and the urethane.
Approximately 20 minutes after the superimposed layers have 3~

been applied, the assembly is placed in the die cavity of the mold assembly illustrated in Figs. 3, 4, and 5, where the gasket 18 is produced as aforementioned.
It is often desirable to apply an additional coating to the outer exposed surface of the gasket 18 before the structure is installed in a vehicle. The coating can be a black urethane-based paint, such as one manufactured by PPG
Industries, Inc., Pittsburgh, Pennsylvania, U.S.A., under the designation Purethane 700 HSE-848. The paint coating is baked at approximately 140 - 150~F for about 20-30 minutes. The coating is employed to protect exposed gasket materials from degradation which would otherwise be caused by exposure to ultraviolet radiation normally present in unfiltered sunlight.
The preformed window assembly can be installed in an appropriate vehicle opening by applying a bead of adhesive material, for example a urethane sealant such as one manufactured by the Essex Chemical Company designated as Betaseal 551.2, with water paste, to the marginal rear edge surface of the gasket member 18, positioning the assembly in alignment with the vehicle opening, and pushing the assembly into position. As the assembly is pushed into position, the adhesive bead is maintained in a compressed cond;tion between the assembly and the mounting flange surrounding the opening.
As soon as the adhesive material cures for a sufficient period, the installation i9 complete.
The following example constitutes the best mode presently contemplated by the inventors. It is to be construed as illustrative, and not as limiting.
EXAMPLE
The surfaces of the upper and lower mold sections 26 and 22 which surround the mold cavity between the two, when assembled, are treated with a solvent-based mold release agent which is a blend of waxes; the particular mold release agent is commercially available from Park Chemical Company, Detroit, Michigan, U.S.A., under the trade designation PRC-789. The assembly to be provided with an encapsulating gasket 18 includes a clear sheet of flat glass of nominal 0.155 inch thickness. The surface of the sheet which is adapted to face the interior of the vehicle in which it is to be glazed, i.e., the inboard surface of the sheet, has a protective laceration inhibiting shield bonded thereto. This shield comprised a three layer composite sheet including a first layer of high adhesion polyvinyl butyral 0.015 inch in thickness bonded to the glass, a second layer of flame treated polyester ("Mylar") 0.004 inch in thickness, and an abrasion resistant coating on the exposed surface of the polyester made from silica-reinforced methyl-siloxane. The abrasion resistant coating had been removed from the peripheral marginal area of the shield adapted to contact the encapsulating gasket.
The assembly is appropriately positioned on the lower mold 22, after which the upper mold 26 is mated with the lower mold 22, and the two are clamped together. A charge composed of one part by weight of a polyol composition and 0.63 part by weight of an isocyanate is then forced into a mixing head under a pressure of about 2,500 p9i and from thence into the mold 20 at a pressure of about 50 psi. The polyol and isocyanate streams are maintained at a temperature of about 100F, while the mold 22 is maintained at a temperature of about 145F. The polyol and isocyanate streams are thoroughly mixed before they reach the mold. Approximately one and one-half minutes after the urethane composition is injected therein, the mold 20 may be opened, and the assembly lO removed therefrom.
The resulting elastomeric gasket is microcellular, and has a specific gravity of 1.07 g/cc; a hardness (Shore "A"3 ~3~

of 90; a tensile strength of 1500 psi; a percent elongation of 279; and a flexural modulus Nat 75~F) of approximately 3500.
The polyol composition used in carrying out the procedure described in the foregoing example is typically composed of 100 pounds of a base polyol, namely a 6000 molecular weight polyether triol with ethylene oxide "capping", sold under the trademark "Voranol" 5815 by the Dow Chemical Company, Midland, Michigan, U.S.A.; 10 pounds of ethylene glycol; and 3 pounds of 20% carbon black in polyol.
The isocyanate used in practicing the procedure of the foregoing example is a modified 4,4' diphenyl methane diisocyanate sold under the trademark Rubinate LF 179 by the Rubicon Chemicals Co., Geismar, Louisiana, U.S.A.
The above constituents are catalyzed by the addition of dibutyl tin dilaurate, and a solution of triethylenediamine in dipropylene glycol.
While the preferred embodiment of the invention utilizes a composition of polyurethane to achieve the desired results, other compositions of nylons, polyesters, and epoxies may be suitably utilized as the gasket forming material.

Claims (21)

THE EMBODIMENTS OF THE INVENTION IN WHICH AN EXCLUSIVE PROPERTY
OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A glazing product for use in closing an opening in a structure, characterized by a main body of a generally transparent sheet of glazing material, a layer of transparent plastic material adhered in superimposed and substantially coextensive relation to at least one surface of said sheet of glazing material, and a gasket formed in situ about the peripheral marginal edges of said main body and said layer and adhesively secured thereto.
2. A glazing product as claimed in claim 1, characterized in that said main body comprises a sheet of glass.
3. A glazing product as claimed in either of claims 1 or 2, characterized in that gasket is composed of a synthetic polymer.
4. A glazing, including a glass substrate having adhered to a major surface thereof a layer of plastic material, said plastic material having an exposed surface and being effective to provide increased anti-lacerative properties to the glass sheet when the glazing is impacted and the glass sheet broken, and a gasket extending about a major portion of the periphery of the glazing and adhered to the adjacent marginal edge surfaces of both the glass substrate and plastic layer, said gasket having been polymerized in situ adjacent said edge surfaces and having assumed through the autogenous mechanism incident to its polymerization and cure while confined intimate contact with said surfaces.
5. A glazing as claimed in claim 4, characterized in that said gasket extends completely around the periphery of the glazing.
6. A glazing as claimed in claim 4, characterized in that said exposed surface of said plastic layer has an abrasion resistant coating applied thereto.
7. A glazing as claimed in claim 4, characterized in that said glass substrate is composed of a single glass sheet.
8. A glazing as claimed in claim 4, characterized in that said substrate is composed of a plurality of glass sheets laminated together through an interposed adhesive material.
9. A glazing as claimed in claim 7, characterized in that said glass sheet is tempered.
10. A glazing as claimed in claim 7, characterized in that said glass sheet is heat strengthened.
11. A glazing as claimed in claim 4, characterized in that said gasket is formed of an elastomeric material.
12. A glazing as claimed in claim 4, characterized in that said gasket is composed of polyurethane.
13. A glazing as claimed in claim 4, characterized in that said gasket is comprised of a microcellular polyurethane elastomer.
14. A glazing as claimed in claim 4, characterized in that said layer of plastic material includes a thickness of polyvinyl butyral one surface of which is adhered to said major surface of glass, and a thickness of polyester adhered to the other surface of said polyvinyl butyral.
15. A glazing as claimed in claim 14, characterized in that an abrasion resistant coating made from silica-reinforced methyl-siloxane is applied to the free surface of said thickness of polyester.
16. A glazing as claimed in claim 15, characterized in that said gasket is comprised of a microcellular polyurethane elastomer.
17. A glazing, including at least one sheet of glass having adhered to a major surface thereof a layer of plastic material, said plastic material having an exposed surface and being effective to provide increased anti-lacerative properties to the glass sheet when the glazing is impacted and the glass sheet broken, and a gasket extending about a major portion of the periphery of the glazing and adhered to the adjacent marginal edge surfaces of both the glass and plastic layer, said gasket having been polymerized in situ adjacent said edge surfaces and having assumed through the autogenous mechanism incident to its polymerization and cure while confined intimate contact with said surfaces.
18. A glazing as claimed in claim 17, characterized in that said gasket extends completely around the periphery of the glazing.
19. A method of producing an anti-lacerative glazing product including a glass sheet and a gasket adhered to the periphery thereof, characterized by the steps of:
assembling into a superimposed stacked arrangement a glass substrate sheet and a plastic anti-lacerative sheet;
laminating said plastic sheet to said glass sheet to form an integral assembly;
positioning said integral assembly within the interior of a mold cavity formed by a plurality of cooperating die sections, said mold cavity having the shape and position, relative to said integral assembly, of the ultimate gasket, and enclosing the marginal surfaces of the assembly immediately adjacent the periphery thereof;
injecting into the mold cavity a composition which is capable upon cure to produce a gasket and, when cured in contact with the marginal surfaces of the integral laminated assembly, adheres thereto;

controlling the pressure at which the composition is injected into the mold cavity to one sufficiently low that the glass substrate sheet and plastic anti-lacerative sheet are not damaged;
controlling the temperature of the mold cavity, the injection of the composition and the amount of the composition injected so that the composition assumes upon curing intimate contact with the mold cavity and with the sheets of said integral assembly;
curing the composition and removing the resulting encapsulated anti-lacerative glazing product from the mold cavity.
20. A method of producing an anti-lacerative glazing product as claimed in claim 19, characterized in that said composition both polymerizes and cures upon injection into said mold cavity when in contact with the marginal surfaces of the integral laminated assembly.
21. A method of producing an anti-lacerative glazing product as claimed in claim 20, characterized in that said composition is a mixture of a polyol and an isocyanate which upon polymerization and cure forms a polyurethane elastomer.
CA000481690A 1984-09-04 1985-05-16 Encapsulated glazing product_ Expired CA1243060A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/646,942 US4543283A (en) 1984-09-04 1984-09-04 Encapsulated glazing product
US646,942 1984-09-04

Publications (1)

Publication Number Publication Date
CA1243060A true CA1243060A (en) 1988-10-11

Family

ID=24595084

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000481690A Expired CA1243060A (en) 1984-09-04 1985-05-16 Encapsulated glazing product_

Country Status (15)

Country Link
US (1) US4543283A (en)
JP (1) JPS6166645A (en)
KR (1) KR860002432A (en)
AU (1) AU581661B2 (en)
BE (1) BE902540A (en)
BR (1) BR8503518A (en)
CA (1) CA1243060A (en)
DE (1) DE3521115A1 (en)
ES (1) ES8800870A1 (en)
FR (1) FR2569625A1 (en)
GB (1) GB2164080B (en)
IT (1) IT1182049B (en)
LU (1) LU85932A1 (en)
NL (1) NL8501622A (en)
SE (1) SE462846B (en)

Families Citing this family (69)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2609093B2 (en) * 1986-12-24 1991-08-30 Saint Gobain Vitrage METHOD FOR OBTAINING MULTIPLE GLAZING AND DEVICE FOR CARRYING OUT SAID METHOD
CA1328801C (en) * 1986-02-20 1994-04-26 Michel Canaud Multiple glazing, process for obtaining same, and process implementation means
US4861540A (en) * 1986-04-16 1989-08-29 Donnelly Corporation Method for forming a molded assembly with an embedded part
US4700525A (en) * 1986-04-16 1987-10-20 Donnelly Corporation Molded panel assembly and fasteners therefor
JPH0645298B2 (en) * 1986-04-24 1994-06-15 東海興業株式会社 Method for manufacturing automobile window device
FR2600933B1 (en) * 1986-07-04 1988-12-09 Boussois Sa PROCESS FOR THE MANUFACTURE OF A GLAZING COMPRISING A THERMOFUSIBLE RESIN JOINT OVERMOLDED AROUND ITS PERIPHERY AND GLASS THUS OBTAINED
EP0252207B1 (en) * 1986-07-10 1992-12-09 Asahi Glass Company Ltd. Process for the production of a glazing product
JPS6315215U (en) * 1986-07-16 1988-02-01
GB8618727D0 (en) * 1986-07-31 1986-09-10 Wiggins Teape Group Ltd Thermoplastic sheets
DE3632148A1 (en) * 1986-09-22 1988-03-31 Scharwaechter Gmbh Co Kg PROTECTIVE COVER FOR SCRATCH-SENSITIVE LENSES
DE3632472A1 (en) * 1986-09-24 1988-03-31 Flachglas Ag MOTORCYCLE DISC
JPS63159125A (en) * 1986-12-23 1988-07-02 Central Glass Co Ltd Window member and manufacture thereof
US4823511A (en) * 1987-02-05 1989-04-25 Libbey-Owens Ford Co. Retention shield window assembly and method of making the same
FR2624787B1 (en) * 1987-12-18 1990-05-04 Esswein Sa METHOD FOR MANUFACTURING FRAMED COMPOSITE PANEL, AND RESULTING PANEL
US5073012A (en) * 1988-02-12 1991-12-17 Donnelly Corporation Anti-scatter, ultraviolet protected, anti-misting, electro-optical assemblies
US5355245A (en) * 1988-02-12 1994-10-11 Donnelly Corporation Ultraviolet protected electrochemichromic rearview mirror
US5115346A (en) * 1988-02-12 1992-05-19 Donnelly Corporation Anti-scatter, ultraviolet protected, anti-misting, electro-optical rearview mirror
US5239406A (en) * 1988-02-12 1993-08-24 Donnelly Corporation Near-infrared reflecting, ultraviolet protected, safety protected, electrochromic vehicular glazing
JPH066311B2 (en) * 1988-02-18 1994-01-26 株式会社池田硝子工業所 Method of manufacturing plate-shaped body with molding or holder
FR2627721B1 (en) * 1988-02-29 1991-01-25 Peugeot METHOD AND DEVICE FOR PRODUCING A SOLIDARITY JOINT OF THE PERIPHERAL PART OF A GLAZING AND GLAZING OBTAINED
DE3920925C2 (en) * 1988-07-05 1997-07-03 Heidel Gmbh & Co Kg Molding tool for producing (foaming) a profile from multi-component plastic, in particular polyurethane, on the edge of a glass pane
ATE85268T1 (en) * 1988-08-26 1993-02-15 Recticel APPARATUS AND METHOD FOR AT LEAST PARTIAL ENCAPSULATION OF A SUBSTANTIALLY SHEET OBJECT.
US4832782A (en) * 1988-09-27 1989-05-23 Libbey-Owens-Ford Co. Vacuum ring for producing laminated glass
ES2010479A6 (en) * 1989-04-18 1989-11-01 Libbey Owens Ford Co Retention shield window assembly and method.
IT1238018B (en) * 1989-10-24 1993-06-23 Lys Fusion Spa PROCESS AND MOLD FOR THE CO-MOLDING OF PLASTIC MATERIALS WITH DETERIORABLE INSERTS
GB2241191B (en) * 1990-02-22 1993-08-25 David Kane Forming decorative panels
US5268183A (en) * 1990-05-04 1993-12-07 Vidrio Plano De Mexico, S.A. Mold apparatus having an outwardly angled seal for encapsulating a glass sheet
GB2245861B (en) * 1990-06-22 1995-01-18 Pilkington Glass Ltd Edge encapsulation
US5208080A (en) * 1990-10-29 1993-05-04 Ford Motor Company Lamination of semi-rigid material between glass
US5147485A (en) * 1990-10-29 1992-09-15 Ford Motor Company Lamination of semi-rigid material between glass
US5411696A (en) 1990-12-27 1995-05-02 Tokai Kogyo Kabushiki Kaisha Process of making a panel unit
US5273354A (en) * 1991-03-07 1993-12-28 Donnelly Corporation Molded refrigerator shelf and support bracket
US5403084A (en) * 1991-03-07 1995-04-04 Donnelly Corporation Molded refrigerator shelf with snap-in slide
US5362145A (en) * 1991-03-07 1994-11-08 Donnelly Corporation Molded refrigerator shelf
US5454638A (en) 1991-03-07 1995-10-03 Donnelly Technology, Inc. Adjustable refrigerator shelving
US5441338A (en) * 1991-03-07 1995-08-15 Donnelly Corporation Snap-on shelf
DE4126909C2 (en) * 1991-08-14 1994-12-15 Ibm Plate-shaped part with a seal running around the side surfaces and its use
US5422058A (en) * 1993-03-03 1995-06-06 Okamoto; Satoru Mounting structure of sheet glass on window frame and the like
CA2174305C (en) * 1995-06-07 2007-07-03 Ronald A. Cageao Method of producing gaskets from polyurethane/urea compositions and gaskets produced therefrom
JPH09125834A (en) * 1995-10-31 1997-05-13 Ykk Architect Prod Kk Fitting structure of sheet glass for sash
US5908674A (en) * 1995-12-13 1999-06-01 E. I. Du Pont De Nemours And Company Impact-resisting glazing structure
US6276064B1 (en) * 1996-05-31 2001-08-21 Black & Decker, Inc. Viewing window for saw guard and method of making same
FR2757804B1 (en) * 1996-12-30 1999-01-22 Saint Gobain Vitrage GLASS EQUIPPED WITH A PLASTIC FRAME, PARTS AND METHOD FOR THE PRODUCTION THEREOF
DE19745919C1 (en) * 1997-10-17 1999-08-12 Minnesota Mining & Mfg Injection mold for the encapsulation of plastic around a filter material, filter for filtering fluids and method for producing such a filter
US6375699B1 (en) 1997-10-17 2002-04-23 3M Innovative Properties Company Injection mold for insert-molding a synthetic material around a filter material, filter for the filtration of fluids and method for producing such filter
US6408574B1 (en) 1998-11-04 2002-06-25 Transit Care, Inc. Quick release sacrificial shield and window assembly
US6425215B2 (en) 1998-11-04 2002-07-30 Transit Care, Inc. Sacrificial shield for window assembly
US7254927B1 (en) 1998-11-04 2007-08-14 Transit Care, Inc. Process for retrofitting an existing bus window having rubber seals with metal members that define a retention space for a sacrificial member
US6855386B1 (en) 1999-03-19 2005-02-15 3M Innovative Properties Company Wet surface adhesives
US6624273B1 (en) 1999-03-19 2003-09-23 3M Innovative Properties Company Plasticized acrylics for pressure sensitive adhesive applications
US6518343B1 (en) 1999-06-18 2003-02-11 3M Innovative Properties Company Wet-stick adhesives, articles, and methods
US6441092B1 (en) 1999-06-18 2002-08-27 3M Innovative Properties Company Wet-stick adhesives
EP1194495B1 (en) 1999-06-18 2006-08-23 3M Innovative Properties Company Nonwoven sheets, adhesive articles, and methods for making the same
US6419298B2 (en) 1999-09-16 2002-07-16 Transit Care, Inc. Window protector assembly
US6206453B1 (en) 1999-09-16 2001-03-27 Transit Care, Inc. Window protector assembly
US6665984B2 (en) * 2001-06-13 2003-12-23 Gemtron Corporation Washer door or lid defined by a tempered glass panel bordered by an open frame-like encapsulation of one-piece injection molded polymeric/copolymeric synthetic plastic material
US20030104171A1 (en) * 2001-11-29 2003-06-05 Maclachlan Julia Method of using short wavelength UV light to selectively remove a coating from a substrate and article produced thereby
DE10202404A1 (en) * 2002-01-22 2003-08-07 Schott Glas Method of making a bracket
KR20040019597A (en) * 2002-08-28 2004-03-06 젬트론 코포레이션 A Washer Door or Lid Defined by a Tempered Glass Panel Bordered by an Open Frame-Like Encapsulation of One-Piece Injection Molded Polymeric/Copolymeric Synthetic Plastic Material
US6869128B2 (en) 2002-10-11 2005-03-22 Transit Care, Inc. Quick change window assembly
DE10306957A1 (en) * 2003-02-19 2004-09-09 Webasto Vehicle Systems International Gmbh Window assembly for a vehicle and manufacturing method therefor
US20070278817A1 (en) * 2006-05-30 2007-12-06 Dorsey Gregg R Clear plastic convering to protect cars
FR2917311B1 (en) * 2007-06-12 2009-10-09 Peugeot Citroen Automobiles Sa DEVICE FOR INSTALLING A GLUE CORD ON A BORDER OF A FILM PROTECTING A GLAZING ELEMENT.
FR2946917B1 (en) * 2009-06-19 2012-06-29 Saint Gobain MANUFACTURING METHOD AND SHEET GLAZING WITH AT LEAST ONE HOLE
US20110023548A1 (en) * 2009-07-29 2011-02-03 Garner Sean M Glass substrate comprising an edge web portion
US10562274B1 (en) * 2016-02-22 2020-02-18 Apple Inc. Glass fastening and sealing systems
HUE058782T2 (en) 2016-12-02 2022-09-28 Mi Integration S E N C Apparatus and method for injection molding encapsulation
EP3453810B1 (en) * 2017-05-24 2023-03-22 Skylux N.V. Dome device and method for manufacturing thereof
BE1025566B1 (en) * 2017-09-20 2019-04-19 Skylux N.V. Method for manufacturing a multi-walled device, in particular a multi-walled roof device

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3281296A (en) * 1963-04-08 1966-10-25 Permaglass Method for edge sealing safety glass
GB1052697A (en) * 1963-10-21 1900-01-01
FR2123089B1 (en) * 1970-12-11 1974-08-23 Saint Gobain
GB1359168A (en) * 1971-05-21 1974-07-10 Glaverbel Panels incorporating a glass sheet and the manufacture thereof
FR2251608B1 (en) * 1973-11-16 1977-09-23 Saint Gobain
US3919022A (en) * 1974-02-21 1975-11-11 Ppg Industries Inc Window panel edge construction
US4027061A (en) * 1975-11-18 1977-05-31 Monsanto Company Laminated safety glass
GB1546011A (en) * 1976-07-14 1979-05-16 Essex Chemical Corp Direct glazing method for installing windshields and backlights on automobile bodies on an assembly line
US4242403A (en) * 1976-08-02 1980-12-30 Libbey-Owens-Ford Company Automotive glazing units and method of producing the same
CA1081732A (en) * 1977-12-27 1980-07-15 Cleon C. Morgan Window assembly
US4227950A (en) * 1979-04-05 1980-10-14 Corning Glass Works Direct casting method for producing low-stress glass/plastic composite lenses
DE3140366C2 (en) * 1981-10-10 1985-02-14 Metzeler Kautschuk GmbH, 8000 München Method and device for producing a built-in part, consisting of a disk and a sealing and holding frame
IT1193617B (en) * 1982-02-03 1988-07-21 Schade Wilhelm ELEMENT FOR A WINDOW FRAME, IN PARTICULAR FOR VEHICLES, PROCEDURE FOR ITS MANUFACTURE AND PIECES FOR IMPLEMENTING THE PROCEDURE
FR2543535B1 (en) * 1983-03-31 1986-08-14 Saint Gobain Vitrage SAFETY GLAZING, AND IN PARTICULAR WINDSHIELD FOR MOTOR VEHICLES
CA1259090A (en) * 1983-09-26 1989-09-05 Libbey-Owens-Ford Co. Preformed window assembly and method of making the same
CA1237746A (en) * 1983-12-12 1988-06-07 Sheller Globe Corp Molded urethane window gasket assembly with hinge member and apparatus and method for making same
DE3419894A1 (en) * 1984-05-28 1985-11-28 Metzeler Kautschuk GmbH, 8000 München METHOD FOR MAKING A GLASS DISC ON A FRAME OF ELASTOMERIC MATERIAL

Also Published As

Publication number Publication date
SE8502480D0 (en) 1985-05-21
SE8502480L (en) 1986-03-05
LU85932A1 (en) 1986-01-22
AU4280385A (en) 1986-03-13
GB8513511D0 (en) 1985-07-03
IT1182049B (en) 1987-09-30
SE462846B (en) 1990-09-10
US4543283A (en) 1985-09-24
IT8548330A0 (en) 1985-07-10
GB2164080B (en) 1988-05-25
BR8503518A (en) 1986-04-22
KR860002432A (en) 1986-04-26
JPS6166645A (en) 1986-04-05
GB2164080A (en) 1986-03-12
FR2569625A1 (en) 1986-03-07
AU581661B2 (en) 1989-03-02
DE3521115A1 (en) 1986-03-13
BE902540A (en) 1985-09-16
ES8800870A1 (en) 1987-12-01
ES543479A0 (en) 1987-12-01
NL8501622A (en) 1986-04-01

Similar Documents

Publication Publication Date Title
CA1243060A (en) Encapsulated glazing product_
EP0252207B1 (en) Process for the production of a glazing product
US4059469A (en) Glazing units, methods of making the same and adhesion promoters therefor
CN1052691C (en) Energy absorbing mounting systems for motor vehicle windows
US5763089A (en) Asymmetric glass-plastics safety glass pane
US3881043A (en) Laminated safety windshields
US5766755A (en) Laminated safety pane for aircraft
US4795667A (en) Vehicle window assembly having a retention shield and method and apparatus for producing same
US5667595A (en) Process for manufacturing a solar module and the solar module prepared thereby
CN1188177A (en) Sound absorbing article and method of making same
US20060232093A1 (en) Window arrangement for a vehicle and method for the production thereof
PL190583B1 (en) Composote glazing panel of glass and aplastic, assembly incorporating such composite glazing panel, method of making such assembly and method of determining optimum geometric parameters of that panel and glazing panel having such optimised parameters
EP0781792A1 (en) Cross-linked polyurethane resin sheet and laminated product employing it
US3781184A (en) Safe bi-modal windshields
KR19990045614A (en) Laminated pane and its manufacturing method
EP0431534A2 (en) Method of making window glass with a gasket
US20030022001A1 (en) Laminated glazing
EP0320871A2 (en) Bilayer windshield with an abrasion and solvent resistant polyurethane protective coating
US4911984A (en) Laminated glazing unit
US4923757A (en) Bilayer windshield with an abrasion and solvent resistant polyurethane protective coating
EP0581746B1 (en) Movable transparent panel structure to close the roof of an automobile
CN85106415A (en) Glass for seal window and manufacture method thereof
JPS61281118A (en) Crosslinked type polyurethane based resin sheet
JPS62103219A (en) Material for window and manufacture thereof
JP4353614B2 (en) Method for producing film-reinforced glass

Legal Events

Date Code Title Description
MKEX Expiry