Avery Dennison Corporation

Nailesh M Sangani

Michael D Hilston

Carol A Caldwell

Robert K Rega

Carolyn Eberly

Markieta Valvoda

A stretchable tape includes a nonextensible layer having a separation line, a pressure-sensitive adhesive layer, an extensible layer and an adhesive inhibiting masking between adjacent portions of the extensible layer and adhesive layer to enable relative movement and tape stretchability. The tape is especially useful in the manufacture of diaper tabs. The tape stock and diaper tabs may be manufactured using conventional web processing equipment.

Stretchable tape

A composite construction is described which comprises (A) a layer of plasticized polymer film having a face side and a back side; (B) a release-coated liner having one surface in contact with the back side of the layer of plasticized polymer film; and either (C) a plasticizer-resistant polymer backcoating on the other surface of the release-coated liner (B) which is essentially impervious to the plasticizer in (A); or (D) a removable plasticizer-resistant polymer film in contact with the face side of the layer of plasticized polymer film (A). Such composite constructions are capable of being wound upon themselves in roll form and may be readily unwound for use. When unwound, the presence of mottling on the surface of the vinyl film is observed to be minimized or eliminated. The invention also relates to a method of preventing the formation of mottling when composites comprising at least a layer of plasticized polymer film and a release-coated liner are either wound upon themselves to form a roll or stacked upon each other. The method comprises applying a plasticizer-resistant polymer backcoating on the surface of the release-coated liner which is not in contact with the plasticized polymer film, or contacting the surface of the plasticized polymer film opposite the release-coated liner with a removable plasticizer-resistant polymer film.

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Mentor, OH, United States of America

Nailesh M Sangani