US3899621A - Security film for shatter-proofing windows - Google Patents

Security film for shatter-proofing windows Download PDF

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Publication number
US3899621A
US3899621A US29581672A US3899621A US 3899621 A US3899621 A US 3899621A US 29581672 A US29581672 A US 29581672A US 3899621 A US3899621 A US 3899621A
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stratum
polyester
security film
thickness
strata
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Michael E Willdorf
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Van Leer Plastics BV
Material Distributors Corp
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Material Distributors Corp
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Priority to US05295816 priority Critical patent/US3899621A/en
Priority to US05/597,481 priority patent/US4075386A/en
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Assigned to VAN LEER PLASTICS reassignment VAN LEER PLASTICS ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: VAN LEER PLASTICS, B.V.,
Assigned to VAN LEER PLASTICS B.V. reassignment VAN LEER PLASTICS B.V. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: VAN LEER U.S.A.
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10009—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
    • B32B17/10018—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 only one glass sheet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10165—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
    • B32B17/1022—Metallic coatings
    • B32B17/10229—Metallic layers sandwiched by dielectric layers
    • 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
    • B32B17/1077—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 polyurethane
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
    • B32B17/10779—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer containing polyester
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • 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
    • B32B7/00—Layered 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
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44F—SPECIAL DESIGNS OR PICTURES
    • B44F1/00—Designs or pictures characterised by special or unusual light effects
    • B44F1/06—Designs or pictures characterised by special or unusual light effects produced by transmitted light, e.g. transparencies, imitations of glass paintings
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/29—Laminated material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2311/00—Metals, their alloys or their compounds
    • B32B2311/24—Aluminium
    • 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
    • B32B2367/00—Polyesters, e.g. PET, i.e. polyethylene terephthalate
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
    • C09J2301/16—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the structure of the carrier layer
    • C09J2301/162—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the structure of the carrier layer the carrier being a laminate constituted by plastic layers only
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
    • C09J2301/302—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier the adhesive being pressure-sensitive, i.e. tacky at temperatures inferior to 30°C
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2400/00—Presence of inorganic and organic materials
    • C09J2400/10—Presence of inorganic materials
    • C09J2400/16—Metal
    • C09J2400/163—Metal in the substrate
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2467/00—Presence of polyester
    • C09J2467/006—Presence of polyester in the substrate
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2475/00—Presence of polyurethane
    • C09J2475/006—Presence of polyurethane in the substrate
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/14—Layer or component removable to expose adhesive
    • Y10T428/1414—Ceramic, glass, glasslike, vitreous
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/14—Layer or component removable to expose adhesive
    • Y10T428/1438—Metal containing
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/14—Layer or component removable to expose adhesive
    • Y10T428/1452—Polymer derived only from ethylenically unsaturated monomer
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
    • Y10T428/2495—Thickness [relative or absolute]
    • Y10T428/24967—Absolute thicknesses specified
    • Y10T428/24975—No layer or component greater than 5 mils thick
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
    • Y10T428/263—Coating layer not in excess of 5 mils thick or equivalent
    • Y10T428/264—Up to 3 mils
    • Y10T428/265—1 mil or less
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
    • Y10T428/2848—Three or more layers
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31551—Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
    • Y10T428/31565—Next to polyester [polyethylene terephthalate, etc.]
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31551—Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
    • Y10T428/31598—Next to silicon-containing [silicone, cement, etc.] layer
    • Y10T428/31601—Quartz or glass
    • Y—GENERAL 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31678—Of metal
    • Y10T428/31681—Next to polyester, polyamide or polyimide [e.g., alkyd, glue, or nylon, etc.]

Definitions

  • ABSTRACT [52] US. Cl. 428/216; 350/1; 428/40;
  • the present invention relates to a security film for shatter-proofing windows against impact or explosion, and, more particularly, to security film for application to one face of a window as a shield to prevent fragmentation of glass notwithstanding its splintering or cracking when damaged.
  • Prior security films, when adhered to window faces, have tended to rip in the event of impact or explosion to the accompanyment of flying glass, which is the primary danger that safety film is intended to prevent.
  • the object of the present invention is to provide, as
  • a security film for shatterproofing ordinary window panes a laminated assemblage in which at least one polyurethane stratum is interposed between at least a pair of polyester strata, each of the latter of which are self supporting, and one of the latter of which is provided with a pressure sensitive surface. It has been found that such an assemblage, when adhered to the inner or outer face of an ordinary window pane, is characterized by an unusual ability to absorb energy without rupture, possibly because of the microstructure of the polyester which is devoid of surface discontinuities, the tenacity with which polyurethane can be bonded to polyester and the energy redistribution of which the entire assemblage is capable when incrementally under stress.
  • Another object of the present invention is to provide a process for applying such an assemblage to the inside or outside of an ordinary window pane, by wetting the pressure sensitive adhesive with an aqueous detergent, which permits the assemblage to be slipped into optically clear contact with the window pane face and which then evaporates through the assemblage, which fortuitously is moisture permeable, and via its edges to permit activation of the pressure sensitive adhesive.
  • the invention accordingly comprises the products and processess of the present invention, together with their components, steps and interrelationships, which are referred to in the present disclosure, the scope of which will be indicated in the appended claims.
  • FIG. 1 is a flow diagram illustrating a security film, in exaggerated cross section, undergoing a process of the present invention
  • FIG. 2 illustrates a window incorporating the present invention
  • FIG. 3 is an alternative product, in exaggerated cross section, analogous to the product of FIG. 1;
  • FIG. 4 is another alternative product embodying the present invention.
  • FIG. 5 is a further alternative product embodying the present invention.
  • the security film of FIG. 1 which is flexible, comprises, in laminated sequence, a moisture permeable polyester stratum 12, an elastomeric polyurethane bonding stratum l4, a moisture permeable polyester stratum 16 and a pressure sensitive adhesive straturn 18. All of these strata are optically clear and transparent.
  • polyester strata 12 and 16 are of the type sold by Dupont under the trademark Mylar or by I.C.I. under the trademark Melinex.
  • polyurethane bonding stratum 14 is formed as an elastomer by casting a mixture of an isocyanate containing compo- -nent and a hydroxyl containing component on one of the faces of polyester strata 12, 16, then superposing another of the faces thereon and compressing the two strata during heat curing.
  • pressure sensitive adhesive 18 is composed of a mixture of synthetic and natural rubbers, e.g. neoprene and latex, a tackifier such as terpene, and an organic solvent such as toluene or methyl ethyl ketone. This pressure sensitive adhesive is optically clear and transparent.
  • polymeric strata l2 and 14 each range in thickness from 0.5 to 5 mils
  • elastomeric bonding stratum l4 ranges in thickness from 0.2 to 0.4 mils
  • pressure sensitive adhesive 18 ranges in thickness from 0.5 to 1.5 mils.
  • a clear aqueous detergent 22 is applied to pressure sensitive stratum 18 in order to deactivate the pressure sensitive adhesive during application of the film shown at 10, to a window 24.
  • the aqueous detergent coat serves as a lubricant to permit smoothing of the film and elimination of air pockets between the film and the window.
  • the aqueous detergent diffuses through the edges of the interface between the film and the window and through the film itself.
  • the pressure sensitive adhesive in particular being vapor permeable but insoluable with respect to water.
  • the detergent is polar and the pressure sensitive adhesive is non-polar.
  • the alternative embodiment of FIG. 3 comprises, in laminated sequence, a moisture permeable polyester stratum 32, an elastomeric polyurethane bonding stratum 34, a moisture permeable polyester stratum 36, a pressure sensitive adhesive stratum 38, and a release stratum 40, all analogous to their counterparts in the embodiment of FIG. 1.
  • this alternative embodiment comprises a vapor deposited aluminium coat 40 that is characterized by a visible light transmission of 5% to and a thickness of no more than 300 angstrom units.
  • one or both of the polyester strata contains an ultraviolet absorbent, for example, a dispersed substituted benzophenone of the type sold by Antara Chemicals under the trademark Uvinul.
  • FIGS. 3 and 4 Alternative heavier duty security films embodying the present invention are shown in FIGS. 3 and 4.
  • the security film of FIG. 3 comprises in laminated sequence a polyester stratum 46, a polyurethane stratum 48, a polyester stratum 50, a polyurethane stratum 52, a polyester stratum 54, a pressure sensitive adhesive stratum 56 and a release stratum 58.
  • the security film of FIG. 4 comprises all of the strata of FIG. 3, designated 60, 64, 66, 68, 70, 72, and 74, and additionally an interposed vapor deposited aluminum coat 62.
  • the polyester strata, polyurethane strata, vapor deposited strata, pressure sensitive strata and release strata are analogous to their counterparts in FIGS. 1 and 3.
  • each of the security films of FIGS. 1, 3 and 4 the security film is applied at 76 to the inside or outside face of a window pane 78.
  • the security film of FIGS. 1 or 4 When in position, the security film of FIGS. 1 or 4 is capable of preventing fragmentation of window 78 when it is cracked or otherwise damaged by an external impact or explosion at a position 80.
  • the security film of FIG. 2 or 5 When in position, the security film of FIG. 2 or 5, in addition to serving the function of that of FIG. 1 or 4, serves as a solar control window for reduction of transmission of infrared, visible and ultraviolet radiation.
  • the present invention accordingly comprises a security film for application to an ordinary window pane in order to render it splinter proof. Since certain changes may be made in the foregoing disclosure without departing from the scope of the invention herein involved, it is intended that all matter shown in the accompanying drawing or described in the foregoing specification be interpreted in an illustrative and not in a limiting sense.
  • An assemblage consisting of only one sheet of window glass and a security film said security film comprising an assemblage of strata including at least one first polyester support stratum, at least one second polyester support stratum, at least one elastomeric bonding stratum, and only one pressure sensitive adhesive stratum, said one first polyester support stratum and said one second polyester stratum each being com.- posed of polyethylene terephthalate and ranging from 0.5 to 5 mils in thickness, said one elastomeric bonding stratum being composed of polyurethane and being interposed between said one first polyester support stra- .tum and said one second polyester support stratum and in direct contact with the inner faces of said one first polyester support stratum and said one second polyester support stratum, said polyurethane bonding stratum ranging in thickness from 0.2 to 0.4 mil, said pressure sensitive stratum being coated on one of the outer faces of said assemblage and being adhered to said only one face of only one sheet of window glass, said pressure sensitive stratum being composed of a composition including a rubber and a
  • a security film for application to only one face of only one sheet of window glass comprising an assemblage of strata including at least one first polyester support stratum, at least one second polyester support stratum, at least one elastomeric bonding stratum, and only one pressure sensitive adhesive stratum, said one first polyester support stratum and said one second polyester stratum each being composed of polyethylene terephthalate and ranging from 0.5 to 5 mils in thickness, said one elastomeric bonding stratum being composed of polyurethane and being interposed between said one first polyester support stratum and said one second polyester support stratum and in direct contact with the inner faces of said one first polyester support stratum and said one second polyester support stratum, said polyurethane bonding stratum ranging in thickness from 0.2 to 0.4 mil, said pressure sensitive stratum being coated on one of the outer faces of said assemblage for adhesion to said only one face of only one sheet of window glass, said pressure sensitive stratum being composed of a composition including a rubber and a tackifier and ranging in thickness from

Abstract

A security film for shatter-proofing windows comprises a polyurethane stratum interposed between a pair of polyester strata, each of which is self supporting, the film being bonded to the inner face of the window by a pressure sensitive adhesive.

Description

United States Patent Willdorf ]*Aug. 12, 1975 [54] SECURITY FILMFORSHATTER-PROOFING 3,290,203 12/1966 Antonson et a1. 161/167 3,445,423 5/1969 Sunshine et a1 161/190 3,657,057 4/1972 Shorr et a1. 161/408 Inventor: Michael Willdorf, Maiden, Mass- 3,671,370 6/1972 Litteli 161/190 1731 Assigiieei Maiiiiai iiisiiiiiiiiiiis Ciiiwaiiiiii, 33311112 1111335 EZZTKJIIIIIIIII: '13:"1517142 wobumi Mass- 3,718,535 2/1973 Armstrong et a1... 161/190 1 Notice: The p i of the term f i 3,775,226 11/1973 Wmdorf 161/4 patent subsequent to Nov. 27, 1990, has been disclaimed. Primary Exam1ner-George F. Lesmes Filed! 1972 Assistant Examiner-Wi11iam R. Dixon, Jr. [21] AppL Nos. 295,816 gttgrney, Agent, or FirmMorse, Altman, Oates &
e 0 Related US. Application Data [63] Continuation-impart of Ser. No. 113,426, Feb. 8,
1971, Pat. NO. 3,775,226.
[57] ABSTRACT [52] US. Cl. 428/216; 350/1; 428/40;
/3 4; 428/ /458 A security film for shatter-proofing windows com- [51] Int. Cl- B4417 1/100 prises a polyurethane stratum interposed between a Field Of Search pair of polyester strata, each of which is self support- 161/165 ing, the film being bonded to the inner face of the window by a pressure sensitive adhesive. [56] References Cited UNITED STATES PATENTS 7 Claims, 5 Drawing Figures 2,955,961 10/1960 Koller 161/190 6 O P O LYES TER 62 VAPOR DEPOSITED ALUMINUM COAT 64 POLYURETHANE 66 POLYESTER POLYURETHANE POLYESTER PRESSU RE SENSITIVE ADHES 1 VE RELEASE STRATU 1V1 PATENIEII I 3,899,621
SHEET 1 POLYESTER POLYURETHANE POLYESTER I0 v PRESSURE SENSITIVE ADHESIVE AQUEOUS DETERGENT APPLICATOR SECURITY FILM DEACTIVATED PRESSURE SENSITIVE ADHESIVE AQUEOUS DETERGENT WINDOW SECURITY FILM I REACTIVATED PRESSURE SENSITIVE ADHESIVE WINDOW IMPACT OR 2 EXPLOSION SIiEET 2 POLYESTER VAPOR DEPOSITED ALUMINUM COAT gig/ L POLYURETHANE POLYESTER 42 PRESSURE SENSITVE ADHESIVE RELEASE STRATUM FIG 3 POLYESTER POLYURETHANE /POLYESTER POLYURETHANE [\POLYESTER PRESSURE SENSITIVE ADHESIVE RELEASE STRATUM 6O POLYESTER VAPOR DEPOSITED ALUMINUM /COAT 64 1 POLYURETHANE 66 POLYESTER 68 POLYURETHANE 7O POLYESTER 72 Sa i S \PRESSURE SENSITIVE ADHESIVE T4 RELEASE STRATUM 1 SECURITY FILM FOR SHATTER-PROOFING WINDOWS RELATED APPLICATION The presentapplication is a continuation-in-part of application Ser. No. 113,426, filed Feb. 8, 1971, now US. Pat. No. 3,775,226, issued Nov. 27, 1973.
BACKGROUND AND SUMMARY The present invention relates to a security film for shatter-proofing windows against impact or explosion, and, more particularly, to security film for application to one face of a window as a shield to prevent fragmentation of glass notwithstanding its splintering or cracking when damaged. Prior security films, when adhered to window faces, have tended to rip in the event of impact or explosion to the accompanyment of flying glass, which is the primary danger that safety film is intended to prevent.
The object of the present invention is to provide, as
i a security film for shatterproofing ordinary window panes, a laminated assemblage in which at least one polyurethane stratum is interposed between at least a pair of polyester strata, each of the latter of which are self supporting, and one of the latter of which is provided with a pressure sensitive surface. It has been found that such an assemblage, when adhered to the inner or outer face of an ordinary window pane, is characterized by an unusual ability to absorb energy without rupture, possibly because of the microstructure of the polyester which is devoid of surface discontinuities, the tenacity with which polyurethane can be bonded to polyester and the energy redistribution of which the entire assemblage is capable when incrementally under stress.
Another object of the present invention is to provide a process for applying such an assemblage to the inside or outside of an ordinary window pane, by wetting the pressure sensitive adhesive with an aqueous detergent, which permits the assemblage to be slipped into optically clear contact with the window pane face and which then evaporates through the assemblage, which fortuitously is moisture permeable, and via its edges to permit activation of the pressure sensitive adhesive.
Other objects of the present invention are to provide, in an assemblage of the present invention: a vapor deposited aluminum coat on at least one of the polyester strata for reduction of infrared transmission; and/or an ultra-violet absorbing pigment for reduction of ultraviolet transmission.
Further objects of the present invention will in part be obvious and will in part appear hereinafter.
The invention accordingly comprises the products and processess of the present invention, together with their components, steps and interrelationships, which are referred to in the present disclosure, the scope of which will be indicated in the appended claims.
BRIEF DESCRIPTION OF DRAWINGS For a fuller understanding of the nature and objects of the present invention, reference is made to the following detailed description, taken in connection with the accompanying drawing wherein:
FIG. 1 is a flow diagram illustrating a security film, in exaggerated cross section, undergoing a process of the present invention;
FIG. 2 illustrates a window incorporating the present invention;
FIG. 3 is an alternative product, in exaggerated cross section, analogous to the product of FIG. 1;
FIG. 4 is another alternative product embodying the present invention; and
FIG. 5 is a further alternative product embodying the present invention.
DETAILED DESCRIPTION Generally, the security film of FIG. 1, which is flexible, comprises, in laminated sequence, a moisture permeable polyester stratum 12, an elastomeric polyurethane bonding stratum l4, a moisture permeable polyester stratum 16 and a pressure sensitive adhesive straturn 18. All of these strata are optically clear and transparent. Typically polyester strata 12 and 16 are of the type sold by Dupont under the trademark Mylar or by I.C.I. under the trademark Melinex. Typically polyurethane bonding stratum 14 is formed as an elastomer by casting a mixture of an isocyanate containing compo- -nent and a hydroxyl containing component on one of the faces of polyester strata 12, 16, then superposing another of the faces thereon and compressing the two strata during heat curing. Typically pressure sensitive adhesive 18 is composed of a mixture of synthetic and natural rubbers, e.g. neoprene and latex, a tackifier such as terpene, and an organic solvent such as toluene or methyl ethyl ketone. This pressure sensitive adhesive is optically clear and transparent.
Preferably, polymeric strata l2 and 14 each range in thickness from 0.5 to 5 mils, elastomeric bonding stratum l4 ranges in thickness from 0.2 to 0.4 mils and pressure sensitive adhesive 18 ranges in thickness from 0.5 to 1.5 mils.
As shown in FIG. 1, following stripping of a silicone release stratum 20 from pressure sensitive adhesive stratum 18, a clear aqueous detergent 22 is applied to pressure sensitive stratum 18 in order to deactivate the pressure sensitive adhesive during application of the film shown at 10, to a window 24. During such superposition, the aqueous detergent coat serves as a lubricant to permit smoothing of the film and elimination of air pockets between the film and the window. Following application of the film to the window, the aqueous detergent diffuses through the edges of the interface between the film and the window and through the film itself. In order to facilitate such evaporation, preferably all of the strata of the film are selected for their vapor permeability, the pressure sensitive adhesive in particular being vapor permeable but insoluable with respect to water. In other words, the detergent is polar and the pressure sensitive adhesive is non-polar.
The alternative embodiment of FIG. 3 comprises, in laminated sequence, a moisture permeable polyester stratum 32, an elastomeric polyurethane bonding stratum 34, a moisture permeable polyester stratum 36, a pressure sensitive adhesive stratum 38, and a release stratum 40, all analogous to their counterparts in the embodiment of FIG. 1. In addition, this alternative embodiment comprises a vapor deposited aluminium coat 40 that is characterized by a visible light transmission of 5% to and a thickness of no more than 300 angstrom units. In a modification of the embodiment of FIG. 2, one or both of the polyester strata contains an ultraviolet absorbent, for example, a dispersed substituted benzophenone of the type sold by Antara Chemicals under the trademark Uvinul.
Alternative heavier duty security films embodying the present invention are shown in FIGS. 3 and 4. The security film of FIG. 3 comprises in laminated sequence a polyester stratum 46, a polyurethane stratum 48, a polyester stratum 50, a polyurethane stratum 52, a polyester stratum 54, a pressure sensitive adhesive stratum 56 and a release stratum 58. The security film of FIG. 4 comprises all of the strata of FIG. 3, designated 60, 64, 66, 68, 70, 72, and 74, and additionally an interposed vapor deposited aluminum coat 62. In FIGS. 4 and 5, the polyester strata, polyurethane strata, vapor deposited strata, pressure sensitive strata and release strata are analogous to their counterparts in FIGS. 1 and 3.
In operation of each of the security films of FIGS. 1, 3 and 4, the security film is applied at 76 to the inside or outside face of a window pane 78. When in position, the security film of FIGS. 1 or 4 is capable of preventing fragmentation of window 78 when it is cracked or otherwise damaged by an external impact or explosion at a position 80. When in position, the security film of FIG. 2 or 5, in addition to serving the function of that of FIG. 1 or 4, serves as a solar control window for reduction of transmission of infrared, visible and ultraviolet radiation.
The present invention accordingly comprises a security film for application to an ordinary window pane in order to render it splinter proof. Since certain changes may be made in the foregoing disclosure without departing from the scope of the invention herein involved, it is intended that all matter shown in the accompanying drawing or described in the foregoing specification be interpreted in an illustrative and not in a limiting sense.
What is claimed is:
1. An assemblage consisting of only one sheet of window glass and a security film, said security film comprising an assemblage of strata including at least one first polyester support stratum, at least one second polyester support stratum, at least one elastomeric bonding stratum, and only one pressure sensitive adhesive stratum, said one first polyester support stratum and said one second polyester stratum each being com.- posed of polyethylene terephthalate and ranging from 0.5 to 5 mils in thickness, said one elastomeric bonding stratum being composed of polyurethane and being interposed between said one first polyester support stra- .tum and said one second polyester support stratum and in direct contact with the inner faces of said one first polyester support stratum and said one second polyester support stratum, said polyurethane bonding stratum ranging in thickness from 0.2 to 0.4 mil, said pressure sensitive stratum being coated on one of the outer faces of said assemblage and being adhered to said only one face of only one sheet of window glass, said pressure sensitive stratum being composed of a composition including a rubber and a tackifier and ranging in thickness from 0.5 to 1.5 mil, all of the strata of said assemblage being optically clear and moisture permeable, and a light transmitting aluminum coat that is vapor deposited on one inner face of said one first polyester stratum and said one second polyester stratum, said vapor deposited aluminum coat being characterized by a visible light transmission ranging from 5 to and a thickness of no more than 300 angstrom units, at least one of said one firstpolyester stratum and said one second polyester stratum containing an ultraviolet absorbing dye.
2. A security film for application to only one face of only one sheet of window glass, said security film comprising an assemblage of strata including at least one first polyester support stratum, at least one second polyester support stratum, at least one elastomeric bonding stratum, and only one pressure sensitive adhesive stratum, said one first polyester support stratum and said one second polyester stratum each being composed of polyethylene terephthalate and ranging from 0.5 to 5 mils in thickness, said one elastomeric bonding stratum being composed of polyurethane and being interposed between said one first polyester support stratum and said one second polyester support stratum and in direct contact with the inner faces of said one first polyester support stratum and said one second polyester support stratum, said polyurethane bonding stratum ranging in thickness from 0.2 to 0.4 mil, said pressure sensitive stratum being coated on one of the outer faces of said assemblage for adhesion to said only one face of only one sheet of window glass, said pressure sensitive stratum being composed of a composition including a rubber and a tackifier and ranging in thickness from 0.5 to 1.5 mil, all of the strata of said assemblage being optically clear and moisture permeable.
3. The security film of claim 2 wherein a light transmitting aluminum coat is vapor deposited on one inner face of said one first polyester stratum and said one second polyester stratum. I i
4. The security film of claim 3 wherein said vapor deposited aluminum coat is characterized by a visible light transmission ranging from 5 .to 60% and a thickness of not more than 300 angstrom units.
5. The security film of clairnj2 wherein at least one of said one first polyester stratum and said one second polyester stratum contains an ultraviolet absorbing dye.
6. The security film of claim 3 wherein there are two polyester strata and one bonding stratum.
7. The security film of claim 2 where there are more than two polyester strata and more than one bonding Stratum. I

Claims (7)

1. AN ASSEMBLAGE CONSISTING OF ONLY ONE SHEET OF WINDOW GLASS AND A SECURITY FILM, SAID SECURITY FILM COMPRISING AN ASSEMBLAGE OF STRATA INCLUDING AT LEAST ONE FIRST POLYESTER SUPPORT STRATUM, AT LEAST ONE SECOND POLYESTER SUPPORT STRATUM, AT LEAST ONE ELASTOMERIC BONDING STRATUM, AND ONLY ONE PRESSURE SENSITIVE ADHESIVE STRATUM, SAID ONE FIRST POLYESTER SUPPORT STRATUM AND SAID ONE SECOND POLYESTER STRATUM EACH BEING COMPOSED OF POLYETHYLENE TEREPHTHALATE AND RANGING FROM 0.5 TO 5 MILS IN THICKNESS SAID ONE ELASTOMERIC BONDING STRATUM BEING COMPOSED OF POLYURETHANE AND BEING INTERPOSED BETWEEN SAID ONE FIRST POLYESTER SUPPORT STRATUM AND SAID ONE SECOND POLYESTER SUPPORT STRATUM AND IN DIRECT CONTACT WITH THE INNER FACES O SAID ONE FIRST POLYESTER SUPPORT STRATUM AND SAID ONE SECOND POLYESTER SUPPORT STRATUM, SAID POLYURETHANE BONDING STRATUM RANGING IN THICKNESS FROM 0.2 TO 0.4 MILS, SAID PRESSURE SENSITIVE STRATUM BEING COATED ON ONE OF THE OUTER FACES OF SAID ASSEMBLAGE AND BEING ADHERED TO SAID ONLY ONE FACE OF ONLY ONE SHEET OF WINDOW GLASS, SAID PRESSURE SENSATIVE STRATUM BEING COMPOSED OF A COMPOSITION INCLUDING A RUBBER AND A TACKIFIER AND RANGING IN THICKNESS FROM 0.5 MIL, ALL OF THE STRATA OF SAID ASSEMBLAGE BEING OPTICALLY CLEAR AND MOISTURE PREMEABLE, AND A LIGHT TRANSMITTING ALUMINUM COAT THAT IS VAPOR DEPOSITED ON ONE INNER FACE OF SAID ONE FIRST POLYESTER STRATUM AND SAID ONE SECOND POLYESTER STRATUM, SAID VAPOUR DEPOSITED ALUMINUM COAT BEING CHARACTERIZED BY A VISIBLE LIGHT TRANSMISSION RANGING FROM 5 TO 60% AND A THICKNESS OF NO MORE THAN 300 ANGSTROM UNITS, AT LEAST ONE OF SAID ONE FIRST POLYESTER STRATUM AND SAID ONE SECOND POLYESTER STRATUM CONTAINING AN ULTRAVIOLET ABSORBING DYE.
2. A SECURITY FILM FOR APPLICATION TO ONLY ONE FACE OF ONLY ONE SHEET OF WINDOW GLASS, SAID SECURITY FILM COMPRISING AN ASSEMBLY OF STRATA INCLUDING AT LEAST ONE FIRST POLYESTER SUPPORT STRATUM, AT LEAST ONE SECOND POLYESTER SUPPORT STRATUM, AT LEAST ONE ELASTOMERIC BONDING STRATUM, AND ONLY ONE PRESSURE SENSITIVE ADHESIVE STRATUM, SAID ONE FIRST POLYESTER SUPPORT STRATUM AND SAID ONE SECOND POLYESTER STRATUM EACH BEING COMPOSED OF POLYETHYLENE TERPHTHALE AND RANGING FROM 0.5 TO 5 MILS IN THICKNESS, SAID ONE ELASTOMERIC BONDING STRATUM BEING COMPOSED OF POLYURETHANC AND BEING INTERPOSED BETWEEN SAID ONE FIRST POLYESTER SUPPORT STRATUM AND SAID ONE SECOND POLYESTER SUPPORT STRATUM AND IN DIRECT CONTACT WITH THE INNER FACES OF SAID FIRST ONE POLYESTER SUPPORT STRATUM AND SAID ONE SECOND POLYESTER SUPORT STRATUM, SAID POLYURETHANC BONDING STRATUM RANGING IN THICKNESS FROM 0.2 TO 0.4 MIL, SAID PRESSURE SENSATIVE STRATUM BEING COATED ON ONE OF THE OUTER FACES OF SAID ASSEMBLAGEFOR ADHENSION TO SAID ONLY ONE FACE OF ONLY ONE SHEET OF WINDOW GLASS, SAID PRESSURE SENSATIVE STRATUM BEING COMPOSED OF A COMPOSITION INCLUDING A RUBBER AND A TACKIFIER AND RANGING IN THICKNESS FROM 0.5 TO 1.5 MIL. ALL OF THE STRATA OF SAID ASSEMBLAGE BEING OPTICALLY CLEAR AND MOISTURE PERMERABLE.
3. The security film of claim 2 wherein a light transmitting aluminum coat is vapor deposited on one inner face of said one first polyester stratum and said one second polyester stratum.
4. The security film of claim 3 wherein said vapor deposited aluminum coat is characterized by a visible light transmission ranging from 5 to 60% and a thickness of not more than 300 angstrom units.
5. The security film of claim 2 wherein at least one of said one first polyester stratum and said one second polyester stratum contains an ultraviolet absorbing dye.
6. The security film of claim 3 wherein there are two polyester strata and one bonding stratum.
7. The security film of claim 2 where there are more than two polyester strata and more than one bonding stratum.
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US4257536A (en) * 1979-10-15 1981-03-24 American Can Company Laminate structure for collapsible dispensing container
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WO2001068360A1 (en) * 2000-03-15 2001-09-20 Cpfilms, Inc. Flame retardant optical films
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EP0022636A1 (en) * 1979-07-16 1981-01-21 Minnesota Mining And Manufacturing Company Composite sheets
US4257536A (en) * 1979-10-15 1981-03-24 American Can Company Laminate structure for collapsible dispensing container
US4678690A (en) * 1986-01-10 1987-07-07 Rexham Corporation Premasked decal
US6040061A (en) * 1992-10-01 2000-03-21 3M Innovative Properties Company Tear resistant multilayer films based on sebacic acid copolyesters and articles incorporating such films
US5427842A (en) * 1992-10-01 1995-06-27 Minnesota Mining And Manufacturing Company Tear resistant multilayer films and articles incorporating such films
US5604019A (en) * 1992-10-01 1997-02-18 Minnesota Mining And Manufacturing Company Tear resistant multilayer films and articles incorporating such films
US5304224A (en) * 1992-10-01 1994-04-19 Minnesota Mining And Manufacturing Company Coated abrasive article having a tear resistant backing
US5355636A (en) * 1992-10-01 1994-10-18 Minnesota Mining And Manufacturing Company Tear resistant coated abrasive article
DE19526912C3 (en) * 1995-07-24 2001-10-11 Haverkamp Sst Sicherheitstechn Process to improve the security against break-in of glass windows and doors with the help of a transparent film
US5773112A (en) * 1996-02-29 1998-06-30 Lintec Corporation Label with a metallic layer of controlled thickness
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US8658273B2 (en) * 2000-09-11 2014-02-25 Arjowiggins Security Security sheet comprising a transparent or translucent layer
KR100408858B1 (en) * 2001-05-28 2003-12-06 주식회사 유아이오씨 The evaporation film and method manufacture vacuum evaporation film of seeing through one side
WO2005000577A2 (en) * 2003-03-04 2005-01-06 Gti Sucursal Colombia Pet as edge seal for multilaminated glazings
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US20060105121A1 (en) * 2003-03-04 2006-05-18 Andrea Cruz Pet as edge seal for multilaminated compositions
WO2005070666A1 (en) * 2004-01-23 2005-08-04 K.M.B. Klebetechnik Gmbh Fire-resistant glass provided with an edge protection
US20080145632A1 (en) * 2004-11-26 2008-06-19 Mitsui Chemicals, Inc. Window Material for Display
US20080199704A1 (en) * 2005-04-29 2008-08-21 Ho Charlie C Multilayer Polyurethane Protective Films
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