Granted Patent B2

US 7,922,983 · App. 11/192,442 · Granted Apr 12, 2011

Abstract

Claims (31)

1. A sterilization wrap, comprising:

a first sheet configured for providing a barrier so as to prevent at least some bacteria from passing therethrough, said first sheet configured to allow sterilization gas to pass therethrough, said first sheet having a perimeter, said first sheet comprising two laminates joined together, each laminate comprising a spunbonded layer, a meltblown layer, and a spunbonded layer; and

a second sheet attached to said first sheet, said second sheet being oriented from 20° to 70° in relation to the sides of said first sheet, said second sheet having a perimeter and said second sheet located on said first sheet so that said perimeter of said second sheet is contained entirely within said perimeter of said first sheet, such that the surface area of said second sheet is less than 50% of the surface area of said first sheet.

2. The sterilization wrap as set forth in claim 1 , wherein said second sheet is configured for providing a barrier so as to prevent at least some bacteria from passing therethrough.

3. The sterilization wrap as set forth in claim 1 , wherein said second sheet has a higher porosity than said first sheet.

4. The sterilization wrap as set forth in claim 1 , wherein said second sheet has a higher basis weight than said first sheet.

5. The sterilization wrap as set forth in claim 1 , wherein the pair of laminates are joined by a plurality of spaced apart and separate bond points, and wherein each of the pair of laminates has a basis weight of from about 16.96 gsm to about 118.69 gsm.

6. The sterilization wrap as set forth in claim 1 , wherein both said first and second sheets have a rectangular shaped upper surface, and wherein said second sheet is oriented on said upper surface of said first sheet such that the sides of said second sheet are oriented at 45° angles to the sides of said first sheet.

7. The sterilization wrap as set forth in claim 1 , wherein the surface area of said second sheet is from 18% to 44% of the surface area of said first sheet.

8. The sterilization wrap as set forth in claim 1 , wherein said second sheet is attached over the entire area of the bottom surface of said second sheet to said first sheet.

9. The sterilization wrap as set forth in claim 1 , wherein said second sheet is attached over less than the entire area of the bottom surface of said second sheet to said first sheet.

10. The sterilization wrap as set forth in claim 1 , wherein the perimeter of said second sheet is attached to said first sheet.

11. The sterilization wrap as set forth in claim 10 , wherein the perimeter of said second sheet is attached intermediately to said first sheet.

12. A sterilization wrap, comprising:

a first sheet adapted for use in a sterilization environment, said first sheet providing bacterial filtration to prevent at least some bacteria from passing therethrough, said first sheet configured to allow sterilization gas to pass therethrough for sterilizing objects, said first sheet having a perimeter and having an upper surface with a surface area, said first sheet includes a laminate that has a spunbonded layer, a meltblown layer, and a spunbonded layer; and

a second sheet attached to said upper surface of said first sheet to provide strength so as to resist tearing therethrough, said second sheet being oriented from 20° to 70° in relation to the sides of said first sheet, said second sheet having a perimeter and said second sheet located on said first sheet so that said perimeter of said second sheet is contained entirely within said perimeter of said first sheet, said second sheet having an upper surface with a surface area, said surface area of said second sheet being less than 50% of the surface area of said first sheet said second sheet configured to allow sterilization gas to pass therethrough.

13. The sterilization wrap as set forth in claim 12 , wherein said second sheet has a higher porosity than said first sheet.

14. The sterilization wrap as set forth in claim 12 , wherein said second sheet has a higher basis weight than said first sheet.

15. The sterilization wrap as set forth in claim 14 , wherein said second sheet has a basis weight greater than 118.69 gsm.

16. The sterilization wrap as set forth in claim 12 , wherein said first sheet includes an additional laminate that has a spunbonded layer, a meltblown layer, and a spunbonded layer, and wherein said pair of laminates are joined by a plurality of spaced apart and separate bond points, and wherein each of the pair of laminates has a basis weight of from about 16.96 gsm to about 118.69 gsm.

17. The sterilization wrap as set forth in claim 12 , wherein said first and second sheets are made from the same material.

18. The sterilization wrap as set forth in claim 12 , wherein said second sheet is made from a material selected from the group consisting of a foam, a woven web, a high loft material, and a bicomponent spunbond.

19. The sterilization wrap as sot forth in claim 12 , wherein said second sheet is attached over the entire area of the bottom surface of said second sheet to said first sheet.

20. The sterilization wrap as set forth in claim 12 , wherein the perimeter of said second sheet is attached to said first sheet.

21. The sterilization wrap as set forth in claim 13 , wherein

a basis weight of from 16.96 gsm to 118.69 gsm; and

said second sheet contains an absorbent material configured to allow sterilization gas to pass therethrough,

wherein said second sheet has a basis weight higher that the first sheet and greater than 118.69 gsm.

22. The sterilization wrap of claim 21 , wherein the second sheet includes a high loft material.

23. The sterilization wrap of claim 21 , wherein the second sheet has a higher porosity than the first sheet.

24. The sterilization wrap of claim 21 , wherein the first sheet is made from a pair of laminates.

Assignments (15)