TAPES AND METHODS OF USE FOR MASKING ALUMINUM SURFACES IN ACID ANODIZATION

A tape includes: a flexible backing layer having two major surfaces, wherein the backing layer has a thickness of greater than 25 micrometers; and an acrylic-based pressure sensitive adhesive layer disposed on one major surface of the backing layer, wherein the acrylic-based pressure sensitive adhes...

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Bibliographische Detailangaben
Hauptverfasser:	DEODHAR SARANG V, KOBE JAMES J, EVERAERTS ALBERT I, COX CHRISTOPHER W, OPATZ MEREDITH A, THOMAS CARLA S, JETTO BECKY A
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE ADHESIVES APPARATUS THEREFOR CHEMISTRY DYES ELECTROFORMING ELECTROLYTIC OR ELECTROPHORETIC PROCESSES METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL PAINTS POLISHES PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS USE OF MATERIALS AS ADHESIVES
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Beschreibung
Zusammenfassung:	A tape includes: a flexible backing layer having two major surfaces, wherein the backing layer has a thickness of greater than 25 micrometers; and an acrylic-based pressure sensitive adhesive layer disposed on one major surface of the backing layer, wherein the acrylic-based pressure sensitive adhesive comprises the reaction of one or more (C8-C20)alkyl acrylates with one or more reinforcing monomers having a homopolymer Tg of at least 50DEG C, wherein the acrylic-based pressure sensitive adhesive has a tan delta of at least 0.5 measured at 80DEG C and an oscillating frequency of 1 radian/second, and wherein the acrylic-based pressure sensitive adhesive layer has a thickness of at least 5 micrometers; wherein, when disposed on an aluminum substrate, the tape displays clean removal from thealuminum substrate according to the Clean Removal Test described in the Examples Section, and a leakage distance of less than 762 micrometers according to the Chromic Acid Anodization-Leakage Distance Test described in the E