Light weight temperature resistant transparent laminate structure

• US 10,046,540 B2
• Filed: 04/20/2012
• Issued: 08/14/2018
• Est. Priority Date: 04/22/2011
• Status: Active Grant

• Current Assignee: Oran Safety Glass Inc. (Oran Safety Glass, Ltd.)
• Original Assignee: Oran Safety Glass Inc. (Oran Safety Glass, Ltd.)
• Inventors: Leighton, Katherine T, Aleshire, Edgar L, Serafin, Wiktor, Snively, Christopher M, Weinhold, Carsten, Wegert, Theodore A, Schaupert, Kurt
• Primary Examiner(s): Shah, Samir
• Assistant Examiner(s): Sawdon, Alicia J
• Application Number:
  US13/452,424
• Publication Number:
  US 20120269995A1
• Time in Patent Office: 2,307 Days
• Field of Search: 2961811, 428215, 428 34, 428412
• CPC Class Codes: B32B 17/04 bonded with or embedded in a plastic substance
• CPC Class Codes: B32B 17/10018 comprising only one glass sheet
• CPC Class Codes: B32B 17/10064 comprising at least two glass sheets, only one of which being an outer layer
• CPC Class Codes: B32B 17/10119 having a composition deviating from the basic composition of soda-lime glass, e.g. borosilicate
• CPC Class Codes: B32B 17/1077 containing polyurethane
• CPC Class Codes: B32B 2307/412 Transparent
• CPC Class Codes: B32B 2307/51 Elastic
• CPC Class Codes: B32B 2307/558 Impact strength, toughness
• CPC Class Codes: B32B 2333/12 Polymers of methacrylic acid esters, e.g. PMMA, i.e. polymethylmethacrylate
• CPC Class Codes: B32B 2369/00 Polycarbonates
• CPC Class Codes: B32B 2571/02 defensive, e.g. armour plates, anti-ballistic clothing camouflage nets B32B2459/00
• CPC Class Codes: B32B 27/08 of synthetic resin
• CPC Class Codes: B32B 27/30 comprising vinyl (co)polymers; comprising acrylic (co)polymers
• CPC Class Codes: B32B 27/365 comprising polycarbonates
• CPC Class Codes: B32B 27/40 comprising polyurethanes
• CPC Class Codes: B32B 7/022 Mechanical properties
• CPC Class Codes: B32B 7/04 Interconnection of layers
• CPC Class Codes: B32B 7/12 using interposed adhesives or interposed materials with bonding properties
• CPC Class Codes: F41H 5/0407 Transparent bullet-proof laminatesinformative reference: layered products essentially comprising glass in general B32B17/06, e.g. B32B17/10009; manufacture or composition of glass, e.g. joining glass to glass C03; permanent multiple-glazing windows, e.g. with spacing therebetween, E06B3/66
• CPC Class Codes: Y10T 428/239 Complete cover or casing
• CPC Class Codes: Y10T 428/24967 : Absolute thicknesses specified
• CPC Class Codes: Y10T 428/31507 : Of polycarbonate

Abstract

A transparent laminate structure is provided that includes a front section, a rear section, and a middle section securing the front and rear sections to one another with a gap therebetween. The front section has a strike face formed of an impact resistant layer and a polymer backing layer bonded to the impact resistant layer by an interlayer. The rear section has a forward face comprising at least one polymer layer. The front and middle sections can form an integral subassembly.

Claims

1. A transparent laminate structure, the structure consisting of and in consecutive order:

an impact resistant layer of borosilicate glass having a strike face on a front side;

a first layer of adhesive;

a second layer of adhesive having a Shore A hardness that is less than a Shore A hardness of the first layer of adhesive;

a first polycarbonate layer;

an adhesive aliphatic polyether film;

a second polycarbonate layer;

a spacer; and

a third polycarbonate layer separated from the second polycarbonate layer by the spacer and forming a gap between the second polycarbonate layer and the third polycarbonate layer,

wherein the gap is hermetically sealed by the spacer.

2. The transparent laminate structure of claim 1, wherein the gap comprises a transparent gas selected from the group consisting of air, nitrogen, argon, helium, oxygen, carbon dioxide, propane, and any combinations thereof.

3. The transparent laminate structure of claim 1, wherein the gap comprises a transparent liquid or gel.

4. The transparent laminate structure of claim 1, wherein the gap has a thickness of at least 0.5 inches.

5. The transparent laminate structure of claim 1, wherein the strike face comprises a de-icing layer.

6. The transparent laminate structure of claim 1, wherein the first or the second polycarbonate layer comprises a fiber reinforced polymer.

7. The transparent laminate structure of claim 1, wherein the impact resistant layer comprises a plurality of impact resistant layers.

8. The transparent laminate structure of claim 1, wherein the second polycarbonate layer has a thickness of up to about 0.22 inches, and wherein the first polycarbonate layer has a thickness of up to about 0.063 inches.

9. The transparent laminate structure of claim 1,

wherein the impact resistant layer, the first layer of adhesive, the second layer of adhesive, the first polycarbonate layer, the adhesive aliphatic polyether film, and the second polycarbonate layer form a front section of an integral subassembly removably secured to a frame holding a rear section comprising the third polycarbonate layer so as to form a hermetic space between the front and rear sections.

10. The transparent laminate structure of claim 9, further comprising a middle section defined by the spacer, the middle section further comprising a desiccant.

18. The transparent laminate structure of claim 1, wherein the adhesive is at least one polymer selected from the group consisting of:

an aliphatic polyether polyurethane, a poly(vinyl butyral), an ethylene/methacrylic acid copolymer, silicone, and an epoxy.

19. The transparent laminate structure of claim 1, wherein the first layer of adhesive has a Shore A hardness of 90 or higher.

20. The transparent laminate structure of claim 1, wherein the second layer of adhesive has a Shore A hardness of 79 or less.

21. The transparent laminate structure of claim 1, wherein the first adhesive layer has a modulus of elasticity that is higher than a modulus of elasticity of the second adhesive layer.

11. A transparent laminate structure assembly, the assembly comprising:

a frame located on a vehicle;

a rear section having at a forward face at least one polymer layer of polycarbonate, the rear section being removably installed in the frame;

a front section, consisting of, in order, a strike face on a front side of an impact resistant layer of borosilicate glass, a first layer of adhesive, a second layer of adhesive having a Shore A hardness less than a Shore A hardness of the first layer of adhesive, a first polycarbonate layer, an adhesive aliphatic polyether film, and a second polycarbonate layer; and

a middle section having a spacer that is securable to the frame so that the front and rear sections are securable to one another with a hermetically sealed gap between the front and rear sections.

12. The assembly of claim 11, wherein the gap comprises a transparent liquid or gel.

13. The assembly of claim 11, wherein the gap has a thickness of at least 0.5 inches.

14. The assembly of claim 11, wherein the first layer of adhesive has a modulus of elasticity that is higher than a modulus of elasticity of the second layer of adhesive.

15. The assembly of claim 11, wherein the second polycarbonate layer has a thickness up to about 0.22 inches.

16. The assembly of claim 15, wherein the first polycarbonate layer has a thickness up to about 0.063 inches.

17. The assembly of claim 11, wherein the middle section further comprises a desiccant.

22. The assembly of claim 11, wherein the first adhesive layer has a Shore A hardness of 90 or higher and the second adhesive layer has a Shore A hardness of 79 or less.