(under subclass 239) Processes wherein external tension is applied to a self-sustaining body so as to effectively increase at least one surface dimension thereof or otherwise reshape the body by extending it beyond the elastic limit.
(1) Note. Incidental stretching which occurs in the normal reshaping of a workpiece between dies is not considered sufficient to place a patent in this subclass.
SEE OR SEARCH THIS CLASS, SUBCLASS:
2, for processes of forming polarizing sheets by a stretching step.
88+, for tensional deformation of self-sustaining bodies generated by direct application of fluid pressure or vacuum to work or molding material.
288, for stretching of running length work. SEE OR SEARCH CLASS
427, Coating Processes,
171+, for processes of coating combined with stretching or tensioning.
