초록 ▼

The invention discloses a method of preventing transmission of viral pathogens between a source of viral pathogens and a target of said viral pathogens comprising positioning between said source and said target a microporous membrane material comprising (1) a thermoplastic polymer or polytetrafluoro

The invention discloses a method of preventing transmission of viral pathogens between a source of viral pathogens and a target of said viral pathogens comprising positioning between said source and said target a microporous membrane material comprising (1) a thermoplastic polymer or polytetrafluoroethylene and (2) a water- and oil-repellent fluorochemical compound which provides said membrane with oleophobic, hydrophobic and viral barrier properties.

대표청구항 ▼

[ What we claim is:] [1.] A process of thermally laminating a viral barrier microporous membrane to a nonwoven web comprising calendaring an assembly consisting essentially of the microporous membrane and the nonwoven web between a smooth roll and a heated point bonding roll such that the heated poi

[ What we claim is:] [1.] A process of thermally laminating a viral barrier microporous membrane to a nonwoven web comprising calendaring an assembly consisting essentially of the microporous membrane and the nonwoven web between a smooth roll and a heated point bonding roll such that the heated point bonding roll applies heat exogenously at spaced-apart points to create a thermal point bonded, viral barrier laminate having viral properties, wherein the viral barrier laminate permits less than 100 viruses to pass according to A[ Method ES 22-1992, wherein the microporous membrane comprises a thermoplastic polymer and a water- and oil-repellent fluorochemical compound that forms a microporous membrane with oleophobic and hydrophobic properties and further wherein the microporous membrane of the laminate comprises interconnected open and unfilled pores.][ Test Method ES 22-1992.][ Test Method ES 22-1992.][ Method ES 22-1992, wherein the microporous membrane comprises a thermoplastic polymer and a water- and oil-repellent fluorochemical compound that forms a microporous membrane with oleophobic and hydrophobic properties and further wherein the microporous membrane of the laminate comprises interconnected open and unfilled pores.]