Anti-microbial breathable laminate

• US 20050196603A1
• Filed: 02/09/2005
• Published: 09/08/2005
• Est. Priority Date: 03/08/2004
• Status: Abandoned Application

• Current Assignee: Brian Parker, Joel M. Furey, Mark E. Carr, Satish Chandra, Vinesh Naik, William F. Mcnally
• Original Assignee: Brian Parker, Joel M. Furey, Mark E. Carr, Satish Chandra, Vinesh Naik, William F. Mcnally
• Inventors: Naik, Vinesh, Parker, Brian, Carr, Mark E., Chandra, Satish, McNally, William F., Furey, Joel M.
• Application Number:
  US11/054,835
• Publication Number:
  US 20050196603A1
• Time in Patent Office: Days
• US Class Current: 428/319.3
• CPC Class Codes: B32B 2255/02 on fibrous or filamentary layer
• CPC Class Codes: B32B 2255/10 on synthetic resin layer or on natural or synthetic rubber layer
• CPC Class Codes: B32B 2255/205 Metallic coating
• CPC Class Codes: B32B 2255/26 Polymeric coating
• CPC Class Codes: B32B 2262/0261 Polyamide fibres
• CPC Class Codes: B32B 2307/21 Anti-static
• CPC Class Codes: B32B 2307/30 having particular thermal properties
• CPC Class Codes: B32B 2307/7145 Rot proof, resistant to bacteria, mildew, mould, fungi
• CPC Class Codes: B32B 2307/724 Permeability to gases, adsorption
• CPC Class Codes: B32B 2307/7248 Odour barrier
• CPC Class Codes: B32B 27/12 next to a fibrous or filamentary layer
• CPC Class Codes: B32B 27/322 comprising halogenated polyolefins, e.g. PTFE
• CPC Class Codes: B32B 27/40 comprising polyurethanes
• CPC Class Codes: B32B 5/022 Non-woven fabric
• CPC Class Codes: B32B 5/024 Woven fabric
• CPC Class Codes: B32B 7/14 applied in spaced arrangements, e.g. in stripes
• CPC Class Codes: Y10T 428/24802 Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
• CPC Class Codes: Y10T 428/249981 Plural void-containing components
• CPC Class Codes: Y10T 428/249991 Synthetic resin or natural rubbers
• CPC Class Codes: Y10T 428/249992 Linear or thermoplastic

Abstract

A multilayer breathable fabric providing protection against microbial growth, along with anti-odor, anti-static, heat and moisture transfer is disclosed. The breathable fabric includes, in certain embodiments, a membrane containing a porous scaffold material having a void volume and an interconnecting microstructure, and may have a resin composition applied to at least one surface of the scaffold material. The fabric further includes silver-containing substrate placed in contact with the membrane, the silver-containing substrate being secured to the membrane by an adhesive system.

Claims

1. A multilayer breathable fabric, the breathable fabric comprising:

a) a bicomponent membrane containing;

i) a porous scaffold material having a void volume of at least 60% and an interconnecting microstructure, and

ii) a resin composition applied to at least one surface of the scaffold material,

wherein the resin partially fill the voids sufficient to create adhesion of the resin to the scaffold material, but not such that all voids within the scaffold are filled, and

b) a silver-containing substrate placed in contact with the bicomponent membrane, and being secured to the bicomponent membrane by a discontinuous adhesive layer.

2. The multilayer breathable fabric of claim 1, wherein the porous scaffold material comprises polytetraflouroethylene.

3. The multilayer breathable fabric of claim 1, wherein the porous scaffold material is at least 10 microns thick.

4. A multi-layer fabric comprising:

a breathable membrane, the breathable membrane combining an expanded PTFE film partially impregnated with a resin material; and

silver-containing substrate in contact with the breathable membrane.

5. The multi-layer fabric of claim 4, wherein the resin material comprises polyurethane.

6. The multi-layer fabric of claim 4, wherein the laminate further comprises a woven nylon layer, and wherein the breathable membrane is laminated to the woven nylon layer.

7. The multi-layer fabric of claim 4, wherein the silver-containing substrate layer comprises non-wovens, tricot, stretch, plain weave, ripstop and other fabric designs.

8. The multi-layer fabric of claim 4, wherein the silver-containing substrate spun yarn uses staple silver-containing substrate of various lengths and Deniers.

9. The multi-layer fabric of claim 4, wherein the silver is present in from 0.1% to 42% percent by weight of the silver-containing layer.

10. A microbe-resistant breathable membrane, the breathable membrane comprising:

an expanded PTFE film partially impregnated with a resin material; and

silver-containing substrate in contact with the breathable membrane.

11. The microbe-resistant breathable membrane of claim 10, wherein the PTFE film is partially impregnated with polyurethane.

12. The microbe-resistant breathable membrane of claim 10, wherein the silver-containing layer comprise a non-woven, tricot, stretch, plain weave, or ripstop weave.

13. The anti-microbial silver-containing substrate from claim 10, also providing anti-static properties.

14. The anti-microbial silver-containing substrate from claim 10, also providing anti-odor properties.

15. The anti-microbial silver-containing substrate from claim 10, also providing efficient heat transfer properties.

16. The anti-microbial silver-containing substrate from claim 10, also providing efficient moisture transfer properties.

17. A microbe-resistant breathable membrane, the breathable membrane comprising an expanded PTFE film;

and silver-containing substrate in contact with the breathable membrane.