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AssigneeVaproshield, LLC
InventorsDaniel Bess, Robert Piecinski, Leland D. Snyder
Estimating the term…
An ultra violet stable polyester membrane with a polyacrylic coating on one side and a coated pressure sensitive adhesive coating on its other side capable of allowing water vapor to pass through it. The pressure sensitive adhesive is formed of a copolymer comprising a backbone of n-butyl acrylate, 2-ethylhexyl acrylate, and vinyl acetate which is mixed with at least one surfactant and emulsified to produce air bubbles which form pores when the copolymer is set with about 80% to about 90% of the pore sizes ranging from about 200 microns to about 300 microns and being uniformly distributed to form a flow path through the pressure sensitive adhesive.
An ultra violet stable vapor permeable, air barrier and water resistive building membrane comprising a permeable polyester plastic sheet coated with a polyacrylic coating and bonded together, a coating of permeable pressure sensitive adhesive is applied and set on an outer surface of said polyester plastic sheet, said adhesive comprising a copolymer with a backbone of n-butyl acrylate, 2-ethylhexyl acrylate, and vinyl acetate which is mixed with at least one surfactant and emulsified to produce air bubbles which form pores within said copolymer adhesive when the copolymer is cured having a permeability of at least 40 Perms, said pores being uniformly distributed to form a water vapor flow path through the adhesive, and a release liner mounted over said pressure sensitive adhesive.
An ultra violet stable vapor permeable membrane comprising a polyester sheet and polyacrylic coating secured together, a coating of permeable pressure sensitive foamed adhesive coated over an outer back surface of said membrane, said pressure sensitive foamed adhesive comprising a copolymer comprising a backbone of n-butyl acrylate, 2-ethylhexyl acrylate, and vinyl acetate mixed with at least one surfactant and emulsified to produce bubbles in the adhesive which form pores when the copolymer is cured, said cured copolymer having about 80% to about 90% of the pore sizes ranging from about 200 microns to about 300 microns and a pore density in the cured pressure sensitive adhesive ranging from about 4000 per inch2 to about 4600 per inch2, said pores being uniformly distributed throughout said pressure sensitive adhesive to form a water vapor flow path through said polyester sheet and coating and the pressure sensitive adhesive.
An ultra violet stable vapor permeable, air barrier and water resistive building membrane comprising a permeable polyester plastic sheet coated with a polyacrylic coating and bonded together to form a polyacrylic front surface and a back surface, a coating of permeable pressure sensitive adhesive coated to said back surface of said sheet and cured and a release sheet mounted to said pressure sensitive adhesive coating, said adhesive comprising a copolymer which is mixed with at least one surfactant and emulsified to produce air bubbles which form pores within said copolymer when the copolymer is cured, with at least a majority of said pores having a pore size ranging from about 200 microns to about 300 microns, said pores being uniformly distributed to form a water vapor flow path through the adhesive, said coated membrane with a pressure sensitive porous adhesive having a vapor permeability ranging from about 40 to about 70 Perms.
Dependencies are inferred from the claim text.