Repositionable tape closure system for a thin film article
AssigneeMinnesota Mining and Manufacturing Company
InventorRamsis Gobran
Life of this patent
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Abstract
A pressure-sensitive adhesive closure system for a disposable diaper, or the like, in which a pressure-sensitive adhesive fastening tab releasably attaches to a non-blocking thin diaper backsheet which has been treated to raise the surface energy and pattern printed, preferably in a polar solvent, in a discrete area with a release material. The release material prevents the backsheet from blocking in roll form and allows the pressure-sensitive adhesive fastening tab to be removed from the backsheet without destruction of the backsheet.
Claims9
A roll of nonblocking thermoplastic film consisting essentially of a film having two faces each of said two faces having a surface energy of greater than about 33 dynes/cm.sup.2, one of said two faces printed with a low-adhesion material by coating a curable 100 percent solids, polar solvent or aqueous based low-adhesion material over from 10 to 75 percent of said one film face, the remaining portion of said one film face not printed with low-adhesion material, the film thickness being less than about 50 microns wherein the film can be unwound without blocking.
Dependencies are inferred from the claim text.