Minnesota Mining and Manufacturing Company

Franklin C Larimore

Steven M Heilmann

Robert A Sinclair

A pressure-sensitive adhesive layer is crosslinked between carboxyl groups along one surface by polyvalent cations, thus making that surface substantially tack-free while leaving at least one broad surface of the layer tacky and pressure-sensitive. When a broad surface of the adhesive layer is thus made completely tack-free, the adhesive layer can be wound upon itself in roll form without a backing for convenient storage and shipment. Preferably a low-adhesion backsize coating covers the broad tack-free surface to insure that the adhesive layer can be unwound after prolonged storage without delaminating.

Method of making a pressure-sensitive adhesive tape having a

Pressure-sensitive adhesive tape having a substantially tack-free surface

A package for adhesive-surfaced sheet-like articles which may be delicate is formed by mounting the adhesive surface of the article onto a two-part release-surfaced carrier, one part of which supports the periphery of the article and the other part supporting the interior area of the article. With such a package, adhesive-surfaced sheet-like articles can be accurately placed onto an adherend without danger of contaminating the adhesive surface or allowing tearing, curling, or distortion of the article.

Peripherally supported package for adhesive-surfaced articles

A T.E.N.S. electrode is disclosed comprising an essentially dry, body-conformable, electrically-conductive interfacing layer having a maximum thickness of 10 mils, a low profile, one-piece electrically-conductive connector adherent to the top surface of the interfacing layer and a backing member, overlying the interfacing layer and the connector. The electrode is extensible in at least one direction up to 50 percent and requires less than about 25.times.10.sup.6 dynes/cm.sup.2 for an elongation of 20 percent as tested per ASTM Standard D-882.

T.E.N.S. Electrode

An essentially dry, disposable biomedical electrode is disclosed having an improved electrically-conductive material at the interface between the electrode and the skin. The conductive material comprises a dermally-nonirritating cohesive, conformable, synthetic hydrophilic polymer containing at least 5 mole percent of monomer units containing a salt of a carboxylic acid.

Biomedical electrode

An essentially dry, disposable biomedical electrode is disclosed having an improved electrically-conductive material at the interface between the electrode and the skin. The conductive material consists essentially of a cohesive, conformable, nonionic hydrophilic synthetic polymer.

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Shoreview, MN, United States of America

Franklin C Larimore