US PATENT SUBCLASS 156 / 203
.~.~.~.~.~ And edge-joining of one piece blank to form tube

Current as of: June, 1999
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156 /   HD   ADHESIVE BONDING AND MISCELLANEOUS CHEMICAL MANUFACTURE

1  DF  METHODS {7}
60  DF  .~ Surface bonding and/or assembly therefor {93}
196  DF  .~.~ With permanent bending or reshaping or surface deformation of self sustaining lamina {11}
199  DF  .~.~.~ Running or continuous length work {4}
200  DF  .~.~.~.~ Longitudinal bending {3}
203.~.~.~.~.~ And edge-joining of one piece blank to form tube

DEFINITION

Classification: 156/203

(under subclass 200) Processes in which the longitudinal edges of web are bent into contact with each other to overlap or abut to form a hollow tubular body.