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WO1996036757B1 - Barrier webs - Google Patents

Barrier webs

Info

Publication number
WO1996036757B1
WO1996036757B1 PCT/US1996/007156 US9607156W WO9636757B1 WO 1996036757 B1 WO1996036757 B1 WO 1996036757B1 US 9607156 W US9607156 W US 9607156W WO 9636757 B1 WO9636757 B1 WO 9636757B1
Authority
WO
WIPO (PCT)
Prior art keywords
article
web
fluid
analyte
absorbent
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.)
Ceased
Application number
PCT/US1996/007156
Other languages
French (fr)
Other versions
WO1996036757A2 (en
WO1996036757A3 (en
Filing date
Publication date
Priority claimed from US08/442,983 external-priority patent/US5869172A/en
Priority claimed from US08/487,004 external-priority patent/US5846604A/en
Priority claimed from US08/472,568 external-priority patent/US5874164A/en
Priority to AT96920271T priority Critical patent/ATE191523T1/en
Priority to EP96920271A priority patent/EP0826083B1/en
Priority to JP53508896A priority patent/JP3220466B2/en
Application filed filed Critical
Priority to CA002221235A priority patent/CA2221235C/en
Priority to AU58625/96A priority patent/AU5862596A/en
Priority to DE69607609T priority patent/DE69607609T2/en
Publication of WO1996036757A2 publication Critical patent/WO1996036757A2/en
Publication of WO1996036757A3 publication Critical patent/WO1996036757A3/en
Publication of WO1996036757B1 publication Critical patent/WO1996036757B1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Abstract

The present invention includes novel barrier webs that have certain desirable physical qualities such as water resistance, increased durability, improved barrier qualities and the like. The present invention further comprises a barrier web comprising a web that has been treated with a curable shear thinned thixotropic polymer composition, the fabric being adapted to be substantially impermeable to liquids, permeable to gases and impermeable to microorganisms. The barrier webs of the present invention are either impermeable to all microorganisms or are impermeable to microorganisms of certain sizes. The present invention also includes fabrics that are capable of either selective binding certain microorganisms, particles or molecules depending upon what binding partners are incorporated into the polymer before application to the fabric.

Claims

AMENDED CLAIMS [received by the International Bureau on 23 April 1997 (23.04.97); original claims 1-146 replaced by amended claims 1-104 (11 pages)]
1. An article comprising a web having a plurality of web members with interstice.; therebetween;
said web having been treated with a curable thixotropic polymer composition to form a thin film substantially encapsulating at least some of the web members leaving at least some of the interstices open, wherein the web is adapted to be:
substantially impermeable to liquids:
permeable to gases; and
selectively permeable or impermeable to particles.
2. The article of Claim 1, wherein the web is flexible.
3. The article of Claim 1, wherein the web is substantially rigid.
4. The article of Claim 1, wherein the web is comprised of fibers.
5. The article of Claim 1, wherein the web is woven.
6. The article of Claim 1, wherein the web is non-woven.
7. The article of Claim 1, wherein the web is comprised of a synthetic polymer.
8. The article of Claim 7, wherein the synthetic polymer is selected from the group consisting of polyamides, polyesters, regenerated cellulose, cellulose acetate, and mixtures thereof.
9. The article of Claim 1, wherein the web is comprised of natural fibers.
10. The article of Claim 9, wherein the natural fibers are selected from the group consisting of cotton, linen, wool and silk.
11. The article of Claim 4, wherein the fibers are comprised of a mixture of natural fibers and synthetic fibers.
12. The article of Claim 1 1 , wherein the fibers are comprised of a blend of cotton fibers and polyester fibers.
13. The article of Claim 4, further comprising a substantially continuous internal layer.
14. The article of Claim 1, wherein the article is a pad comprising at least one layer of the web and at least a second layer of an absorbent material.
15. The article of Claim 1, wherein the article is a protective gown comprising at least one layer of the web.
16. The article of Claim 1 , wherein the article is a protective webbing material.
17 The article of Claim 1, wherein the article is a wound dressing.
18. The article of Claim 17, wherein the wound dressing comprises an outer layer of the web and an absorbent inner layer.
19 The article of Claim 17, wherein the wound dressing has a growth factor selectively positioned on the surface of the web.
20 The article of Claim 19, wherein the growth factor is basic fibroblast growth factor (bFGF), acidic fibroblast growth factor (aFGF), nerve growth factor (NGF), epidermal growth factor (EGF), lnsulin-like growth factors 1 and 2, (IGF-1 and IGF-2), platelet derived growth factor (PDGF), tumor angiogenesis factor (TAF), pronectin, vascular endothelial growth factor (VEGF). corticotropin releasing factor (CRF), transforming growth factors α and β CTGF-α and TGF-β), ιnterleukιn-8 (IL-8); granulocyte-macrophage colony stimulating factor (GM-CSF), the interleukins, or the lnterferons.
21. The article of Claim 17, wherein a wound healing protein is incorporated into the polymer.
22. The article of Claim 21, wherein the wound healing protein is collagen, cross-linked collagen, fibronectin, pronectin, laminin, elastin, and cross-linked elastin and heparin, heparan sulfate, heparinoids, dermatan sulfate, pentosan polysulfate, chondroitin sulfate, hyaluronic acid, cellulose, agarose, chitin, dextran, and carrageenin or combinations or fragments thereof.
23. The article of Claim 17, wherein the wound dressing has an antimicrobial agent selectively positioned in the curable thixotropic polymer composition.
24. The article of Claim 23, wherein the antimicrobial agent is selected from the group consisting of antibacterial agents, antiviral agents, antifungal agents and antiprotozoal agents.
25. The article of Claim 24, wherein the antimicrobial agent is isoniazid, ethambutol, pyrazinamide, streptomycin, clofazimine. rifabutin, fluoroquinolones, ofloxacin, sparfloxacm, rifampm, dapsone, tctracycline, doxycyline, erythromycin, ciprofloxacin, doxycycline, ampicillin, amphotericin B, ketoconazole. fluconazole. pynmerliaminc, sulfadiazinc, clindamycin, lincomycin, azithromycin, clarithromycin, pcntamidine, atovaquone, paromomycin, diclazaril, acyclovir, trifluorouridine. foscamet, or ganciclovir.
26. The article of Claim 17, wherein the polymer has a modifier with reactivcly available sites capable of binding an agent.
27. The article of Claim 26, wherein the modifier is urethane.
28. The article of Claim 27, wherein the agent is iodine.
29. The article of Claim 28, wherein the iodine is reversibly bound to the urethane.
30. The article of Claim 1, wherein the web has a bioactive surface.
31. The article of Claim 30, wherein the bioactive surface comprises a bioactive molecule positioned on the surface of the web.
32. The article of Claim 31, wherein the bioactive molecule is a binding molecule
33. The article of Claim 32, wherein the binding molecule is selected from the group consisting of an antibody, an antigen, biotin, avidin, strep A or an enzyme, a biologically functional fragment thereof and any combination of the foregoing.
34. The article of Claim 31, wherein the bioactive molecule is a protein or peptide from a virus.
35. The article of Claim 34, wherein the virus is hepatitis B virus (HBV). hepatitis C (HCV), Ebola virus or the human immunodeficiency virus and related strains of virus.
36. The article of Claim 31, wherein the reactively available sites of the bioactive molecules are oriented outwardly from a surface of the web.
37. The article of Claim 1, wherein the particles are microorganisms.
38. The article of Claim 1, wherein the particles are cells.
39. The article of Claim 37, wherein the microorganisms are selected from the group consisting of fungi, bacteria, viruses or protozoa.
40. The article of Claim 1 , wherein the thixotropic polymer contains an antimicrobial agent.
41. The article of Claim 40, wherein the antimicrobial agent is selected from the group consisung of antibacterial agents, antiviral agents, antifungal agents and antiprotozoal agents.
42. The article of Claim 41 , wherein the antimicrobial agent is selected from the group consisting of isoniazid, ethambutol, pyrazinamide, streptomycin, clofazimine, rifabutin, fluoroquinolones, ofloxacin, sparfloxacin, rifampin, dapsone, tetracycline, doxycyline, erythromycin, ciprofloxacin, doxycycline, ampicillin, amphotericin B, ketoconazole, fluconazole, pyrimethamine, sulfadiazine. clindamycin. lincomycin, azithromycin, ciarithromycin, pentamidine. atovaquone, paromomycin, diclazarii, acyclovir, trifluorouridine, foscarnet, and ganciclovir.
43. The article of Claim 1 , wherein the web has one or more growth factors selectively positioned on a surface of the web.
44. The article of Claim 43, wherein the growth factor is selected from the group consisting of basic fibroblast growth factor (bFGF), acidic fibroblast growth factor (aFGF), nerve growth factor (NGF), epidermal growth factor (EGF), insulin-like growth factors 1 and 2, (IGF-1 and IGF-2), platelet derived growth factor (PDGF), tumor angiogeπesis factor (TAF), vascular endothelial growth factor (VEGF), corticotropin releasing factor (CRF), transforming growth factors α and β fTGF-α and TGF-β), mterleukin-8 (IL-8); granulocyte-macrophage colony stimulating factor (GM-CSF); the interleukins, an interferon.
45. The article of Claim 1, wherein a wound healing protein is incorporated into the polymer,
46. The article of Claim 45, wherein the wound healing protein is selected from the group consisting of collagen, cross-linked collagen, fibronectin, pronectin, laminin, elastin, cross-linked elastin hyaluronic acid and combinations or biologically functional fragments thereof.
47. The article of Claim 1 , wherein the polymer has a modifier with rcactively available sites capable of binding an agent.
48. The article of Claim 47, wherein the modifier is urethane.
49. The article of Claim 48, wherein the agent is iodine.
50. The article of Claim 49, wherein the iodine is rcversibly bound to the urethane
51. The article of Claim 1, wherein the thixotropic polymer is selected from the group consisting of silicones, polyurethanes, fluorosilicones, modified polyurethaπe silicones, modified silicone polyurethanes, lycra, acrylics, or polytetrafluoroethylene, or combinations thereof.
52. The article of Claim 1, wherein the web is selected from the group consisting of cotton, wool, silk, jute, linen, rayon, acetate, polyesters, polyethyleneterephthalate, polyamides, nylon, acrylics, olefins, aramids, azlons, glasses, modacrylics, novoloids, nytrils, rayons, sarans, spandex, vinal, vinyon, foams, films, foamed sheets, natural leathers, split hydes, synthetic leathers, vinyl urethate filtration membranes, polysulfones, polyimides, nitrocellulose, cellulose acetate, cellulose, and regenerated cellulose or combinations thereof.
53. The article of Claim 1 , wherein the liquid is a bodily fluid.
54. The article of Claim 53, wherein the bodily fluid is selected from the group consisting of saliva, gingival secretions, cerebrospinal fluid, gastrointestinal fluid, mucous, urogenital secretions, synovia! fluid, blood, scrum, plasma, urine, cystic fluid, lymph fluid, ascites, picural effusion, interstitial fluid, intracellular fluid, ocular fluids, seminal fluid, mammary secretions, and vitreal fluid, and nasal secretions.
55. The article of Claim 54, wherein the bodily fluid is urine.
56. The article of Claim 54, wherein the bodily fluid is blood.
57. The article of Claim 1, wherein the web is partially rigid.
58. The article of Claim 1, wherein the article is an absorbent garment containing a pad comprising at least one layer of the web and at least a second layer of an absorbent material.
59. The absorbent garment of Claim 58, wherein the particles are microorganisms.
60. The absorbent garment of Claim 58, wherein the particles arc cells.
61. The absorbent garment of Claim 59, wherein the microorganisms are selected from (he group consisting of fungi, bacteria, viruses or protozoa.
62. The absorbent garment of Claim 58, wherein the thixotropic polymer contains an antimicrobial agent.
63. The absorbent garment of Claim 62, wherein the antimicrobial agent is selected from the group consisting of antibacterial agents, antiviral agents, antifungal agents and antiprotozoal agents.
64. The absorbent garment of Claim 63, wherein the antimicrobial agent is isoniazid, ethambutol, pyrazmamide, streptomycin, clofazimine, rifabutin, fluoroquinolones, ofloxacin, sparfloxacin, rifampin, dapsone, tetracycline, doxycyline, erythromycin, ciprofloxacin, doxycycline, ampicillin, amphotericin B, ketoconazole. fluconazole, pyrimethamine, sulfadiazine. clindamycin, lincomycin, azithromycin, clarithromycin, pentamidine, atovaquone, paromomycin, diclazaril, acyclovir, trifluorouridine, foscarnet, or ganciclovir.
65. The absorbent garment of Claim 58, wherein the polymer has a modifier with reactively available sites capable of binding an agent.
66. The absorbent garment of Claim 65, wherein the modifier is urethane.
67. The absorbent garment of Claim 65, wherein the agent is iodine.
68. The absorbent garment of Claim 67, wherein the iodine is reversibly bound to the urethane.
69. The absorbent garment of Claim 58, wherein the thixotropic composition is silicones, polyurethanes, fluorosilicones. modified polyurethane silicones, modified silicone polyuremanes, acrylics, or polytetrafluorocthylene.
70. The absorbent garment of Claim 58, wherein the web is cotton, wool, silk, jute, linen, rayon, acetate, polyesters, polyediyleneterephthalate, polyamides, nylon, acrylics, olefins. aramids, azlons, glasses, modacrylics, novoloids, nytrils, rayons, saraπs, spaπdex, vinal, or vinyon.
71. The absorbent garment of Claim 58, wherein the liquid is bodily fluid
72. The absorbent garment of Claim 71 , wherein the bodily fluid is saliva, gingival secretions, cerebrospinal fluid, gastrointestinal fluid, mucous, urogenital secretions, synovial fluid, blood, serum, plasma, urine, cystic fluid, lymph fluid, ascites, pleural effusion, interstitial fluid, intracellular fluid, ocular fluids, seminal fluid, mammary secretions, and vitreal fluid, or nasal secretions.
73. The absorbent garment of Claim 72, wherein the bodily fluid is blood.
74. The absorbent garment of Claim 72, wherein the bodily fluid is urine,
75. The absorbent garment of Claim 58, wherein the garment is an incontinent brief.
76. The absorbent garment of Claim 75, wherein the incontinent brief further contains a shedding shield that is positioned next to the skin of the wearer.
77. The absorbent garment of Claim 76. wherein the absorbent pad in the incontinent brief is under the shedding shield.
78. The absorbent garment of Claim 77, wherein the absorbent pad is larger than the shedding shield.
79. The absorbent garment of Claim 77, wherein the absorbent pad is smaller than the shedding shield.
80. The absorbent garment of Claim 77, wherein there are a plurality of absorbent pads.
81. A method of measuring an analyte in a sample comprising:
contacting the sample with a web that has been treated with a curable thixotropic polymer composition with molecules positioned therein that bind the analyte; and
measuring the analyte bound to the web surface.
82. The method of Claim 81 , wherein the molecule that binds the analyte is an antibody, an antigen, or a fragment of an antibody or antigen, biotin, avidin, strep A or an enzyme or a combination thereof.
83. The method of Claim 81, wherein the analyte is a blood component.
84. The method of Claim 82, wherein the analyte is a microorganism or a component of a microorganism.
85. The method of Claim 84. wherein the microorganism is hepatitis B virus (HBV), hepatitis C (HCV), Ebola virus or the human immunodeficiency virus and related strains of virus.
86. The method of Claim 81, wherein the sample is a bodily fluid.
87. The method of Claim 86, wherein the bodily fluid is saliva, gingival secretions, cerebrospinal fluid, gastrointestinal fluid, mucous, urogenital secretions, synovial fluid, blood, serum, plasma, urine, cystic fluid, lymph fluid, ascites, pleural effusion, interstitial fluid, intracellular fluid, ocular fluids, seminal fluid, mammary secretions, and vitreal fluid, or nasal secretions.
88. A method of purifying or isolating an analyte in a solution comprising, contacting the solution containing the analyte with a web that has been treated with a curable thixotropic polymer composition with molecules positioned therein that bind the analyte,
separating the web with the analyte bound thereto from the solution.
89. The method of Claim 88, further comprising separating the analyte from the web.
90. The method of Claim 88. wherein the molecule that binds the analyte is an antibody, an antigen, or a fragment of an antibody or antigen, biotin, avidin, strep A or an enzyme or a combination thereof.
91. The method of Claim 88, wherein the analyte is a blood component.
92. The method of Claim 88, wherein die analyte is a protein or a particle.
93. The method of Claim 88, wherein the analyte is a microorganism or a component of a microorganism.
94. The method of Claim 88, wherein the analyte is a molecule, a fragment of a molecule, a latex particle or a cell.
95. The method of Claim 93, wherein the cell is a stem cell.
96. A kit for measuring an analyte comprising:
a container,
a web that has been treated with a curable thixotropic polymer composition with molecules positioned therein that bind the analyte.
97. The kit of Claim 96, further comprising a means for measuring the analyte.
98. The kit of Claim 96, wherein the molecule that binds the analyte is an antibody, an antigen, or a fragment of an antibody or antigen, biotin, avidin, strep A or an enzyme or a combination thereof.
99. The kit of Claim 96, further comprising buffer solutions.
100, An incontinent garment comprising:
a shedding shield positioned next to the skin of the wearer which is substantially impermeable to liquids;
one or more absorbent pads positioned under the shedding shield; and an outer layer which is breathable and substantially impermeable to liquids,
wherein the shedding shield is shaped to direct liquids toward the absorbent pad,
101. The incontinent garment of Claim 100, wherein the absorbent pad is larger than the shedding shield,
102. The incontinent garment of Claim 100, wherein the absorbent pad is smaller than the shedding shield.
103. The incontinent garment of Claim 100, wherein the absorbent pad is disposable.
104. The incontinent garment of Claim 103, wherein the shedding shield has one or more openings formed therein allowing some liquid to pass through the absorbent pad,
PCT/US1996/007156 1995-05-17 1996-05-17 Barrier webs Ceased WO1996036757A2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
DE69607609T DE69607609T2 (en) 1995-05-17 1996-05-17 BARRIER LAYERS
AU58625/96A AU5862596A (en) 1995-05-17 1996-05-17 Barrier webs
CA002221235A CA2221235C (en) 1995-05-17 1996-05-17 Barrier webs
EP96920271A EP0826083B1 (en) 1995-05-17 1996-05-17 Barrier webs
JP53508896A JP3220466B2 (en) 1995-05-17 1996-05-17 Barrier web
AT96920271T ATE191523T1 (en) 1995-05-17 1996-05-17 BARRIER LAYERS

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US08/442,983 US5869172A (en) 1988-03-14 1995-05-17 Internally-coated porous webs with controlled positioning of modifiers therein
US08/487,004 1995-06-07
US08/442,983 1995-06-07
US08/472,568 US5874164A (en) 1988-03-14 1995-06-07 Barrier webs having bioactive surfaces
US08/487,004 US5846604A (en) 1988-03-14 1995-06-07 Controlling the porosity and permeation of a web
US08/472,568 1995-06-07

Publications (3)

Publication Number Publication Date
WO1996036757A2 WO1996036757A2 (en) 1996-11-21
WO1996036757A3 WO1996036757A3 (en) 1997-04-03
WO1996036757B1 true WO1996036757B1 (en) 1997-05-22

Family

ID=27412157

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/US1996/007102 Ceased WO1996036761A2 (en) 1995-05-17 1996-05-16 Controlling the porosity and permeation of a web
PCT/US1996/007156 Ceased WO1996036757A2 (en) 1995-05-17 1996-05-17 Barrier webs

Family Applications Before (1)

Application Number Title Priority Date Filing Date
PCT/US1996/007102 Ceased WO1996036761A2 (en) 1995-05-17 1996-05-16 Controlling the porosity and permeation of a web

Country Status (8)

Country Link
US (1) US5846604A (en)
EP (2) EP0832318B1 (en)
JP (2) JP2986219B2 (en)
AT (2) ATE195772T1 (en)
AU (2) AU5795896A (en)
CA (2) CA2221203C (en)
DE (2) DE69609971T2 (en)
WO (2) WO1996036761A2 (en)

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