Removable foam adhesive tape
AssigneeMinnesota Mining and Manufacturing Company
InventorsJames L. Bries, Michael D. Hamerski
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Abstract
Conformable pressure-sensitive adhesive tapes which comprise a layer of polymeric foam in the backing and may be adhered firmly to a substrate and thereafter removed therefrom after only being stretched at an angle no greater than about 35° from the surface of the substrate. Articles for mounting an object such as a picture to a surface such as a wall comprising a pressure-sensitive adhesive tape of the invention are also described.
Claims18
A pressure-sensitive adhesive tape comprising a multilayer backing and a first layer of a pressure-sensitive adhesive composition coated on at least one surface of said backing, said backing comprising a first layer of polymeric foam and either a layer of a solid polymeric film or a second layer of polymeric foam adhered in adjoining relationship to one another, said multilayer backing further having a lengthwise elongation at break of from about 50% to about 1200%, and a Young's modulus of less than about 2400 psi, said tape being capable of being firmly bonded to a substrate and thereafter being removable therefrom after being stretched at an angle no greater than about 35° from the surface of said substrate without said backing rupturing prior to the removal of said tape from said surface.
A pressure-sensitive adhesive tape comprising a multi-layer backing and a first layer of a pressure-sensitive adhesive composition coated on at least one surface of said backing, said backing comprising a layer of a heat laminated or coextruded polymeric foam/polymeric film and either an additional layer of solid polymeric film or an additional layer of polymeric foam adhered to said polymeric film of said heat laminated or coextruded polymeric foam/polymeric film, said multilayer backing further having a lengthwise elongation at break of from about 50% to about 1200%, and a Young's modulus of less than about 2400 psi, said tape being capable of being firmly bonded to a substrate and thereafter being removable therefrom after being stretched at an angle no greater than about 35° from the surface of said substrate without said backing rupturing prior to the removal of said tape from said surface.
Dependencies are inferred from the claim text.