초록 ▼

A multilayer web article, including a first layer of a porous material, e.g., Tyvek® film, and a second layer overlying and sealed to the first layer. The second layer is non-porous to passage of gas therethrough and includes a peelable film, e.g., of polyethylene, in contact with the first layer of

A multilayer web article, including a first layer of a porous material, e.g., Tyvek® film, and a second layer overlying and sealed to the first layer. The second layer is non-porous to passage of gas therethrough and includes a peelable film, e.g., of polyethylene, in contact with the first layer of porous material. The peelable film permits peeling removal of the second layer from the first layer to expose the first layer of porous material for passage of gas therethrough. In a specific construction, the web article constitutes one of opposedly facing panels of a lay-flat bag article, in which the facing panels are bonded to one another along superposed edges thereof. After pressurization integrity testing of the bag, the peelable film is peeled away to enable steam-and/or ETO-sterilization of the bag and its contents to be carried out.

대표청구항 ▼

What is claimed is: 1. A packaging article, comprising: a base member; a first sheet of a porous material joined along at least a first edge portion thereof to the base member to define an enclosed interior volume; a second sheet overlying and sealed to the first sheet, said second sheet (i) being

What is claimed is: 1. A packaging article, comprising: a base member; a first sheet of a porous material joined along at least a first edge portion thereof to the base member to define an enclosed interior volume; a second sheet overlying and sealed to the first sheet, said second sheet (i) being non-porous to passage of gas therethrough and (ii) comprising a peelable film in facial contact with the first sheet, said peelable film permitting peeling removal of the second sheet from the first sheet to expose the first sheet for passage of gas therethrough; and a pressurization gas inlet adapted to permit the ingress of pressurization gas to the enclosed interior volume, the inlet comprising a gland adapted to prevent fluid leakage. 2. The packaging article of claim 1, wherein said first sheet comprises a material selected from the group consisting of cellulosic and synthetic polymeric materials. 3. The packaging article of claim 2, wherein said first sheet comprises a cellulosic material. 4. The packaging article of claim 3, wherein said cellulosic material comprises paper. 5. The packaging article of claim 2, wherein said first sheet comprises a synthetic polymeric material. 6. The packaging article of claim 5, wherein said synthetic polymeric material comprises polyethylene. 7. The packaging article of claim 6, wherein the polyethylene comprises high-density polyethylene. 8. The packaging article of claim 1, wherein said first sheet comprises a flash-spun and bonded polymeric fibrous web. 9. The packaging article of claim 8, wherein said web comprises high density polyethylene fiber. 10. The packaging article of claim 1, wherein said first sheet comprises a porous web of a material selected from the group consisting of polyethylene, polysulfone, polyimide, polypropylene, polybutylene, polyvinylchloride, polyurethane, and polystyrene. 11. The packaging article of claim 1, wherein said first sheet comprises a film of heat-and pressure-consolidated flash-spun high density polyethylene fibers. 12. The packaging article of claim 1, wherein the second sheet further comprises a backing layer secured to the peelable film. 13. The packaging article of claim 1,in the form of a bag adapted to hold a product article therein. 14. The packaging article of claim 1, wherein the packaging article comprises a containment structure for a product article that must be sterile in end usage thereof. 15. The packaging article of claim 14, containing a medical device. 16. The packaging article of claim 14, containing a pharmaceutical agent. 17. The packaging article of claim 1 wherein the pressurization gas inlet is joined to the base member. 18. A packaging article useful for pressurization integrity testing and after pressurization integrity testing being permeable to sterilant gas for sterile packaging of a product article disposable therein, said packaging article comprising: a base member; a first sheet of a porous material joined along at least a first edge portion thereof to the base member to define an enclosed interior volume, the first sheet being permeable to passage of sterilant gas therethrough in exposure to a sterilant gas environment; a second sheet overlying and sealed to the first sheet, said second sheet (i) being non-porous to passage of said sterilant gas therethrough and (ii) comprising a peelable film in facial contact with the first sheet of porous material, said peelable film permitting peeling removal of the second sheet from the first sheet to expose the first sheet for passage of said sterilant gas therethrough; and a pressurization gas inlet adapted to permit the ingress of pressurization gas to the enclosed interior volume for pressurization integrity testing, the inlet comprising a gland adapted to prevent fluid leakage. 19. The packaging article of claim 18, wherein said first sheet comprises a cellulosic material. 20. The packaging article of claim 19, wherein said cellulosic material comprises paper. 21. The packaging article of claim 18, wherein said first sheet comprises a synthetic polymeric material. 22. The packaging article of claim 21, wherein said synthetic polymeric material comprises polyethylene. 23. The packaging article of claim 22, wherein the polyethylene comprises high-density polyethylene. 24. The packaging article of claim 18, wherein said first sheet comprises a flash-spun and bonded polymeric fibrous web. 25. The packaging article of claim 24, wherein said web comprises high-density polyethylene fiber. 26. The packaging article of claim 18, wherein said first sheet comprises a porous web of a material selected from the group consisting of polyethylene, polysulfone, polyimide, polypropylene, polybutylene, polyvinylchloride, polyurethane, and polystyrene. 27. The packaging article of claim 18, wherein said first sheet comprises a film of heat-and pressure-consolidated flash-spun high density polyethylene fibers. 28. The packaging article of claim 18, wherein the second sheet further comprises a backing layer secured to the peelable film. 29. The packaging article of claim 18, wherein the base member comprises a non-porous structural component. 30. The packaging article of claim 29, wherein said non-porous structural component is of sheet form. 31. The packaging article of claim 29, wherein said non-porous structural component comprises a shaped member adapted to secure at least a portion of said product article therein. 32. The packaging article of claim 18, in the form of a bag adapted to hold said product article therein. 33. The packaging article of claim 32, wherein said first sheet comprises a non-porous polyethylene sheet. 34. The packaging article of claim 33, wherein said first sheet comprises a film of heat-and pressure-consolidated flash-spun high density fibers. 35. The packaging article of claim 18, having a product article packaged therein. 36. The packaging article of claim 35, wherein said product article must be sterile in end usage thereof. 37. The packaging article of claim 36, wherein said product article comprises a medical device. 38. The packaging article of claim 36, wherein the product article comprises a pharmaceutical agent. 39. The packaging article of claim 18, in the form of a bag, wherein the base member comprises a non-porous panel, and wherein said first sheet comprises a film of heat-and pressure-consolidated flash-spun high density polyethylene fibers, and said non-porous panel is formed of polyethylene film. 40. The packaging article of claim 39, wherein the first sheet is joined to the base member at a bonded edge region having a bond strength greater than about 20 Newtons per 15 millimeter bonded edge region width. 41. The packaging article of claim 40, wherein the second sheet is sealed to the first sheet with a seal strength in a range of from about 1 to about 8 Newtons per 15 millimeters seal width. 42. The packaging article of claim 18 wherein the pressurization gas inlet is joined to the base member.