IP Library Granted Patent US 7,718,555
Granted Patent B1
US 7,718,555 · App. 11/528,936 · Granted May 18, 2010

Chemically protective laminated fabric

Assignee: Lakeland Industries Inc
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Quick Facts
Patent No.
US 7,718,555
App. No.
11/528,936
Granted
May 18, 2010
Kind
B1
Abstract

A fabric for chemical protective garments having at least two multilayered film laminates separated by a scrim forming a barrier chamber. The laminates are sandwiched between films of linear low density polyethylene and contain a different film from each other selected from ethyl vinyl alcohol, polyethylene terephthalate and polyamide. There is also the garment prepared with the fabric.

Claims (19)

1. A fabric for chemical protective garments and barriers which retards or stops the permeation of a variety of chemicals and comprises:

At least two multi layered film laminates separated by at least one non-woven scrim having a volumetric chamber to form a barrier space, each of said laminates being sandwiched between a film of linear low density polyethylene, each multilayered film laminate comprising a multilayer film selected from the group consisting of ethyl vinyl alcohol, polyethylene terephthalate and polyamide, with the proviso that each laminate has a different multilayered film.

2. The fabric of claim 1 which is about 10 to 13 oz/yd 2 and a thickness of about 20 to 28 mils when physically uncompressed.

3. The fabric of claim 1 wherein said scrim is needle punched.

4. The fabric of claim 3 wherein said scrim has a weight of about 1 to 4 oz/yd 2 .

5. The fabric of claim 1 wherein the polyamide is nylon.

6. The fabric of claim 1 which is about 2 to 7.5 mil in thickness.

7. The fabric of claim 1 comprising three multi film laminates.

8. The fabric of claim 1 comprising two multi film laminates.

9. A chemical protective garment prepared with the fabric of claim 8 .

10. The fabric of claim 1 where said scrim comprises a member selected from the group consisting of polyethylene, polypropylene and fire proof cotton.

11. The fabric of claim 10 wherein said scrim is spunbonded.

12. The fabric of claim 11 wherein said scrim is about 20 to 28 mils thick.

13. The fabric of claim 10 in which a film of an ionomer forms a sandwich with said scrim.

14. The fabric of claim 1 including a tie layer between the linear low density polyethylene and the multi film layers.

15. The fabric of claim 14 wherein said tie layer is an ionomer.

16. The fabric of claim 14 wherein said tie layer comprises ethyl vinyl acetate.

17. The fabric of claim 1 which comprises a fire retardant barrier.

18. A chemical protective garment prepared with the fabric of claim 1 .

Assignments (4)
SECURITY INTEREST Recorded May 17, 2017
From: LAKELAND INDUSTRIES, INC.
To: SUNTRUST BANK
Reel/Frame 042415/0975 →
RELEASE OF SECURITY INTEREST Recorded May 17, 2017
From: ALOSTAR BANK OF COMMERCIE
To: LAKELAND INDUSTRIES, INC.
Reel/Frame 042485/0631 →
SECURITY AGREEMENT Recorded Jul 3, 2013
From: LAKELAND INDUSTRIES, INC.; LAKELAND PROTECTIVE WEAR INC.
To: ALOSTAR BANK OF COMMERCE
Reel/Frame 030746/0767 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 5, 2010
From: SMITH, W. NOVIS; ROBERSON, CHARLES
To: LAKELAND INDUSTRIES, INC.
Reel/Frame 024190/0879 →