Infection control bedding product
An infection control bedding product such as a pillow, duvet, mattress, cushion or such like having a sealed cover and having a deformable filling material, may comprise a liquid impermeable air permeable microbial barrier vent. The vent includes an oleophobic expanded polytetrafluoroethylene (PTFE) membrane extending past the perimeter of the aperture and a nonwoven layer extending past the perimeter of the aperture. A gasket may be bonded to the PTFE membrane, the nonwoven layer and the cover to form a liquid impermeable seal rendering the infection control bedding product liquid impermeable.
1. An infection control bedding product comprising:
a filling material;
a cover enclosing the filling material, the cover including an aperture configured to vent the infection control bedding product;
a filter membrane;
a strengthening layer attached to the filter membrane;
a gasket attached to the strengthening layer;
the gasket extending past the perimeter of the aperture and attached to the cover;
the infection control product being a substantially liquid impermeable air permeable microbial barrier.
2. An infection control bedding product as in claim 1 , wherein the strengthening layer is disposed intermediate the filter membrane and the gasket.
3. An infection control bedding product as in claim 1 , wherein the filter membrane, the strengthening layer, the gasket and the cover are bonded together to form a liquid impermeable seal.
4. An infection control bedding product as in claim 1 , wherein the filter membrane has a pore size between about 2 and 4 microns, and the filter membrane and the strengthening layer have:
air flow between about 20 and 40 liters per minute per square centimeter at 1 bar differential pressure, and
resistance to water of between about 0.2-0.8 bar entry pressure.
5. An infection control bedding product as in claim 1 , wherein the gasket and the cover comprise a first material.
6. An infection control bedding product as in claim 5 , wherein the first material comprises polyurethane.
7. An infection control bedding product as in claim 1 , wherein the filter membrane comprises an oleophobic expanded polytetrafluoroethylene (PTFE) membrane.
8. An infection control bedding product as in claim 1 , wherein the gasket and the cover are bonded to form a vent seam, the infection control bedding product includes a perimeter seam, and the vent seam is not integral with the perimeter seam.
9. An infection control bedding product comprising:
a filling material;
a cover enclosing the filling material, the cover including an aperture configured to vent the infection control bedding product and a liquid impermeable polyurethane coating;
a substantially liquid impermeable air permeable microbial barrier filter membrane;
a strengthening layer attached to the filter membrane and extending past the perimeter of the aperture, the strengthening layer bonded to the cover; and
the infection control product being a liquid impermeable air permeable microbial barrier.
10. An infection control bedding product as in claim 9 , further comprising a gasket, wherein the strengthening layer is disposed intermediate the filter membrane and the gasket.
11. An infection control bedding product as in claim 9 , wherein the filter membrane, the strengthening layer, and the cover are bonded together to form a liquid impermeable seal.
12. An infection control bedding product as in claim 9 , wherein the filter membrane has a pore size between about 2 and 4 microns, and the filter membrane and the strengthening layer have:
air flow between about 20 and 40 liters per minute per square centimeter at 1 bar differential pressure, and
resistance to water of between about 0.2-0.8 bar entry pressure.
13. An infection control bedding product as in claim 9 , wherein the filter membrane comprises an oleophobic expanded polytetrafluoroethylene (PTFE) membrane.
14. An infection control bedding product as in claim 9 , wherein the strengthening layer and the cover are bonded to form a vent seam, the infection control bedding product includes a perimeter seam, and the vent seam is not integral with the perimeter seam.
15. An infection control bedding product comprising:
a filling material;
a cover enclosing the filling material and having an aperture, the cover comprising a liquid impermeable material;
a liquid impermeable air permeable microbial barrier vent comprising:
an oleophobic expanded polytetrafluoroethylene (PTFE) membrane extending past the perimeter of the aperture; and
a nonwoven layer extending past the perimeter of the aperture; and
a gasket bonded to the PTFE membrane, the nonwoven layer and the cover to form a liquid impermeable seal rendering the infection control bedding product liquid impermeable.
16. An infection control bedding product as in claim 15 , wherein the nonwoven layer comprises at least one of a polyvinyl chloride (PVC) nonwoven material and a polypropylene nonwoven material.
17. An infection control bedding product as in claim 16 , wherein the polypropylene nonwoven material comprises a spun fibre polypropylene material.
18. An infection control bedding product as in claim 15 , wherein the nonwoven layer comprises a support backing nonwoven fused or laminated to the PTFE membrane and a strengthening nonwoven material.
19. An infection control bedding product as in claim 15 , wherein the vent has air flow between about 20 and 40 liters per minute per square centimeter at 1 bar differential pressure, and resistance to water of between about 0.2-0.8 bar entry pressure.
20. An infection control bedding product as in claim 15 , wherein the cover and the gasket comprise a polyurethane material.