Patents by Inventor Herbert J. Stenzel

Herbert J. Stenzel has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5292713
    Abstract: Thermosensitive linerless labels (either thermal labels or thermal transfer labels) which can be used with food products contain a pressure sensitive adhesive covering one face of a substrate having a thermosensitive layer on the opposite face, and a release coat covering the thermosensitive layer. The release coating is preferably applied directly to the thermosensitive layer, and preferably is prepared by application and then drying of a formulation containing between about 5-25 parts chromium pentahydroxy (tetradecanoato) di-, and about 75-95% water or alcohol. Alternatively, the release coating may be a UV curable silicone with about 1-3% by weight photoinitiator. After the coatings are applied, the stock is dried in a manner that will not adversely affect the thermosensitive layer, e.g. by ultraviolet rays, or air drying at a temperature of less than 150.degree. F. A web comprising the substrate may be slit into individual rolls, and perfing or die cutting is practiced to form individual labels.
    Type: Grant
    Filed: July 15, 1992
    Date of Patent: March 8, 1994
    Inventors: Herbert J. Stenzel, William D. Swiercz