(under subclass 461) Methods for modifying the temperature of the cover material sufficient to fuse or soften at least a portion or ingredient of such cover material to effect an attachment of contacting areas of the ends of the cover material.
(1) Note. The portion of the cover fused may be either the surface of the cover material or an added coating layer on the cover material.
SEE OR SEARCH THIS CLASS, SUBCLASS:
373.7, for apparatus for heating or cooling an outturned closure seam and see the Notes thereto for art related to seam heating elsewhere classified.
477, for methods of closing covers involving heat sealing.
SEE OR SEARCH CLASS
156, Adhesive Bonding and Miscellaneous Chemical Manufacture, appropriate subclasses as the generic home for making adhered seams and laminating processes for producing articles.
