.~.~ And edge joining of one piece blank or strip {4}
145
.~.~.~ To form helically seamed tube
DEFINITION
Classification: 228/145
(under subclass 144) Process including bending a long attenuated web into a tubular coil to juxtapose the faces of opposite side edges along a line running spirally axially
along the tube so formed, and bonding the resulting seam.
SEE OR SEARCH THIS CLASS, SUBCLASS:
15.7, from apparatus for forming and edge bonding to form a helically seamed tube.
SEE OR SEARCH CLASS
72, Metal Deforming,
49+, for metal tube seaming by deformation. 140, Wireworking,
76, for a process of making ferrules by winding wire into a helix and soldering the adjacent convolutions together.
493, Manufacturing Container or Tube From Paper; or Other Manufacturing From a Sheet of Web,
299+, for making a helical tube from a sheet or web.