CA2548415A1 - Protective laminates - Google Patents

Protective laminates Download PDF

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Publication number
CA2548415A1
CA2548415A1 CA 2548415 CA2548415A CA2548415A1 CA 2548415 A1 CA2548415 A1 CA 2548415A1 CA 2548415 CA2548415 CA 2548415 CA 2548415 A CA2548415 A CA 2548415A CA 2548415 A1 CA2548415 A1 CA 2548415A1
Authority
CA
Canada
Prior art keywords
layer
protective laminate
highly impermeable
textile
laminate
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.)
Granted
Application number
CA 2548415
Other languages
French (fr)
Other versions
CA2548415C (en
Inventor
Daniel M. Wyner
Richard Pierce
Michael Nahmias
Gregory F. Carey
James H. Wyner
Ralph Birchard Lloyd
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.)
Shawmut Corp
EIDP Inc
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2548415A1 publication Critical patent/CA2548415A1/en
Application granted granted Critical
Publication of CA2548415C publication Critical patent/CA2548415C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D31/00—Materials specially adapted for outerwear
    • A41D31/04—Materials specially adapted for outerwear characterised by special function or use
    • A41D31/08—Heat resistant; Fire retardant
    • A41D31/085—Heat resistant; Fire retardant using layered materials
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D31/00—Materials specially adapted for outerwear
    • A41D31/04—Materials specially adapted for outerwear characterised by special function or use
    • A41D31/10—Impermeable to liquids, e.g. waterproof; Liquid-repellent
    • A41D31/102—Waterproof and breathable
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D5/00—Composition of materials for coverings or clothing affording protection against harmful chemical agents
    • 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
    • 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
    • B32B27/28—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
    • B32B27/286—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42 comprising polysulphones; polysulfides
    • 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
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/724—Permeability to gases, adsorption
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption
    • B32B2307/7265—Non-permeable
    • 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
    • B32B2437/00—Clothing
    • 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
    • Y10T428/249921—Web or sheet containing structurally defined element or component
    • Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
    • Y10T428/249978—Voids specified as micro
    • 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
    • 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.]
    • 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]
    • Y10T428/31725—Of polyamide
    • 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]
    • Y10T428/31786—Of polyester [e.g., alkyd, 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
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
    • 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
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
    • Y10T442/2139—Coating or impregnation specified as porous or permeable to a specific substance [e.g., water vapor, air, 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
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/30—Woven fabric [i.e., woven strand or strip material]
    • 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
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/30—Woven fabric [i.e., woven strand or strip material]
    • Y10T442/3472—Woven fabric including an additional woven fabric layer
    • Y10T442/3602—Three or more distinct layers
    • Y10T442/365—At least one layer is a preformed synthetic polymeric film or sheet
    • 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
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/30—Woven fabric [i.e., woven strand or strip material]
    • Y10T442/3854—Woven fabric with a preformed polymeric film or sheet
    • 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
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/30—Woven fabric [i.e., woven strand or strip material]
    • Y10T442/3854—Woven fabric with a preformed polymeric film or sheet
    • Y10T442/3878—Fluorinated olefin polymer or copolymer sheet or film [e.g., Teflon@, etc.]

Abstract

Protective laminates are provided that include (a) a layer that is breathable and highly impermeable to chemicals to a degree that is subject to reduction upon flexing of the highly impermeable layer alone; and (b) a breathable non-textile layer attached to the highly impermeable layer, the non-textile layer mitigating the reduction in the impermeability of the highly impermeable layer if the laminate is flexed. The laminates may, for example, be attached to textiles and used in protective fabrics.

Claims (67)

1. A protective laminate comprising a layer that is breathable, and highly impermeable to chemicals to a degree that is subject to reduction upon flexing of the highly impermeable layer alone; and a breathable hydrophilic non-textile layer attached to the highly impermeable layer, the non-textile layer mitigating the reduction in the impermeability of the highly impermeable layer if the laminate is flexed.
2. The protective laminate of claim 1 further comprising a second non-textile layer, wherein the highly impermeable layer is interposed between the non-textile layers.
3. The protective laminate of claim 1 further comprising a second highly impermeable layer, wherein the non-textile layer is interposed between the highly impermeable layers.
4. The protective laminate of claim 1 further comprising a textile layer attached to the highly impermeable layer.
5. The protective laminate of claim 1 further comprising a textile layer attached to the non-textile layer.
6. The protective laminate of claim 1 wherein the highly impermeable layer comprises a fluorinated ion exchange polymer.
7. The protective laminate of claim 1 wherein the non-textile layer comprises an elastomeric polymer.
8. The protective laminate of claim 1 wherein the non-textile layer comprises a polymer selected from the group consisting of polyurethane, copolyester, polyether block amide, polyamide-elastomer alloy, and mixtures thereof.
9. The protective laminate of claim 1 wherein the non-textile layer comprises polyurethane.
10. The protective laminate of claim 1 wherein the protective laminate has a MVT of at least 2000.
11. The protective laminate of claim 1 wherein the highly impermeable layer is microporous.
12. The protective laminate of claim 1 wherein the highly impermeable layer is monolithic.
13. The protective laminate of claim 1 wherein the non-textile layer is microporous.
14. The protective laminate of claim 1 wherein the non-textile layer is monolithic.
15. The protective laminate of claim 1 wherein the highly impermeable layer has a thickness of about 1 to 100 µm.
16. The protective laminate of claim 1 wherein the non-textile layer has a thickness of about 1 to 50 µm.
17. A protective laminate comprising a layer that is breathable, and highly impermeable to chemicals to a degree that is subject to reduction upon flexing of the highly impermeable layer alone;
a non-textile layer attached to the highly impermeable layer, the non-textile layer mitigating the reduction in the impermeability of the highly impermeable layer if the laminate is flexed; and a second non-textile layer, wherein the highly impermeable layer is interposed between the non-textile layers.
18. The protective laminate of claim 17 further comprising a textile layer attached to the highly impermeable layer.
19. The protective laminate of claim 17 further comprising a textile layer attached to one of the non-textile layers.
20. The protective laminate of claim 17 wherein the highly impermeable layer comprises a fluorinated ion exchange polymer.
21. The protective laminate of claim 17 wherein the non-textile layer comprises a hydrophilic polymer.
22. The protective laminate of claim 17 wherein the non-textile layer comprises an elastomeric polymer.
23. The protective laminate of claim 17 wherein the non-textile layer comprises a polymer selected from the group consisting of polyurethane, copolyester, polyether block amide, polyamide-elastomer alloy, and mixtures thereof.
24. The protective laminate of claim 17 wherein the non-textile layer comprises polyurethane.
25. The protective laminate of claim 17 wherein the protective laminate has a MVT
of at least 2000.
26. The protective laminate of claim 17 wherein the highly impermeable layer is microporous.
27. The protective laminate of claim 17 wherein the highly impermeable layer is monolithic.
28. The protective laminate of claim 17 wherein the non-textile layer is microporous.
29. The protective laminate of claim 17 wherein the non-textile layer is monolithic.
30. The protective laminate of claim 17 wherein the highly impermeable layer has a thickness of about 1 to 100 µm.
31. The protective laminate of claim 17 wherein the non-textile layer has a thickness of about 1 to 50 µm.
32. A protective laminate comprising a layer that is breathable, and highly impermeable to chemicals to a degree that is subject to reduction upon flexing of the highly impermeable layer alone;
a non-textile layer attached to the highly impermeable layer, the non-textile layer mitigating the reduction in the impermeability of the highly impermeable layer if the laminate is flexed; and a second highly impermeable layer, wherein the non-textile layer is interposed between the highly impermeable layers.
33. A protective laminate comprising a first layer comprising fluorinated ion exchange polymer, and a breathable hydrophilic polymer layer attached to the first layer.
34. The protective laminate of claim 33 wherein the first layer is highly impermeable to chemicals to a degree that is subject to reduction upon flexing of the highly impermeable layer alone and the hydrophilic polymer layer mitigates reduction in the impermeability of the first layer if the laminate is flexed.
35. The protective laminate of claim 33 wherein the first layer comprises highly fluorinated ion exchange polymer.
36. The protective laminate of claim 33 wherein the first layer comprises perfluorinated ion exchange polymer.
37. The protective laminate of claim 33 wherein the first layer comprises fluorinate ion exchange polymer having sulfonate functional groups.
38. The protective laminate of claim 33 wherein the sulfonate function groups are in hydrogen ion or sodium ion form.
39. The protective laminate of claim 33 further comprising a second hydrophilic polymer layer, wherein the first layer is interposed between the hydrophilic polymer layers.
40. The protective laminate of claim 33 further comprising a textile layer attached to the first layer.
41. The protective laminate of claim 33 further comprising a textile layer attached to the hydrophilic polymer layer.
42. The protective laminate of claim 33 wherein the protective laminate has a MVT
of at least 200.
43. The protective laminate of claim 33 wherein the protective laminate has a MVT
of at least 2000.
44. The protective laminate of claim 33 wherein the first layer has a MVT of at leap 200.
45. The protective laminate of claim 33 wherein the hydrophilic polymer layer has MVT of at least 200.
46. The protective laminate of claim 33 wherein the first layer is monolithic.
47. The protective laminate of claim 33 wherein the hydrophilic polymer layer is monolithic.
48. The protective laminate of claim 33 wherein the first layer has a thickness of about 1 to 100 µm.
49. The protective laminate of claim 33 wherein the hydrophilic polymer layer has a thickness of about 1 to 50 µm.
50. The protective laminate of claim 33 where the hydrophilic polymer layer has a thickness of about 2 to 25 µm
51. The protective laminate of claim 33 wherein the hydrophilic polymer layer is attached to the first layer by being thermally bonded directly to the first layer without intervening adhesive.
52. The protective laminate of claim 33 wherein the hydrophilic polymer layer is elastomeric.
53. The protective laminate of claim 33 wherein the hydrophilic polymer layer comprises a polymer selected from the group consisting of polyurethane, copolyester, polyether block amide, polyamide-elastomer alloy, and mixtures thereof.
54. The protective laminate of claim 33 wherein the hydrophilic polymer layer comprises polyurethane or polyether block amide.
55. A protective laminate comprising a first layer comprising fluorinated ion exchange polymer, and a breathable elastomeric polymer layer attached to the first layer.
56. A method comprising:
attaching a first layer comprising fluorinated ion exchange polymer to a breathable non-textile layer by directly thermally bonding the non-textile layer to the first layer.
57. The method of claim 56 wherein the first layer is highly impermeable to chemicals to a degree that is subject to reduction upon flexing of the highly impermeable layer, the non-textile layer mitigating the reduction in the impermeability of the highly impermeable layer if the laminate is flexed.
58. An article comprising (a) a protective laminate comprising a first layer comprising fluorinated ion exchange polymer; and a non-textile layer attached to the highly impermeable layer; and (b) a textile layer, attached to the protective laminate to form a chemically resistant fabric;
the chemically resistant fabric being configured to define the article.
59. The article of claim 58 wherein the article is selected from the group consisting of protective structures, garments, and inserts for footwear.
60. The article of claim 59 wherein the protective structure comprises a tent.
61. The article of claim 59 wherein the garment comprises a glove.
62. A method comprising:
bonding a layer that is breathable and highly impermeable to chemicals to a degree that is subject to reduction upon flexing of the highly impermeable layer, to a breathable, hydrophilic non-textile layer, the non-textile layer mitigating the reduction in the impermeability of the highly impermeable layer if the laminate is flexed.
63. An article comprising (a) a protective laminate comprising a layer that is breathable and highly impermeable to chemicals to a degree that is subject to reduction upon flexing of the highly impermeable layer alone; and a breathable, hydrophilic non-textile layer attached to the highly impermeable layer, the non-textile layer mitigating the reduction in the impermeability of the highly impermeable layer if the laminate is flexed; and (b) a textile layer, attached to the protective laminate to form a chemically resistant fabric;
the chemically resistant fabric being configured to define the article.
64. The article of claim 63 wherein the article is selected from the group consisting of protective structures, garments, and inserts for footwear.
65. The article of claim 64 wherein the protective structure comprises a tent.
66. The article of claim 64 wherein the garment comprises a glove.
67. A protective laminate comprising a layer that is breathable, and highly impermeable to chemicals to a degree that is subject to reduction upon flexing of the highly impermeable layer alone; and a breathable elastomeric non-textile layer attached to the highly impermeable layer, the non-textile layer mitigating the reduction in the impermeability of the highly impermeable layer if the laminate is flexed.
CA 2548415 2003-12-10 2004-12-07 Protective laminates Expired - Fee Related CA2548415C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10/732,554 2003-12-10
US10/732,554 US20050130521A1 (en) 2003-12-10 2003-12-10 Protective laminates
PCT/US2004/040910 WO2005061223A1 (en) 2003-12-10 2004-12-07 Protective laminates

Publications (2)

Publication Number Publication Date
CA2548415A1 true CA2548415A1 (en) 2005-07-07
CA2548415C CA2548415C (en) 2012-10-30

Family

ID=34652891

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2548415 Expired - Fee Related CA2548415C (en) 2003-12-10 2004-12-07 Protective laminates

Country Status (4)

Country Link
US (3) US20050130521A1 (en)
EP (1) EP1694501A4 (en)
CA (1) CA2548415C (en)
WO (1) WO2005061223A1 (en)

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US20110171864A1 (en) 2011-07-14
US7553779B2 (en) 2009-06-30
US20050266754A1 (en) 2005-12-01
EP1694501A4 (en) 2009-08-19
CA2548415C (en) 2012-10-30
EP1694501A1 (en) 2006-08-30
US20050130521A1 (en) 2005-06-16

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