Plastic tube and method and apparatus for manufacturing

Details Plastic tube and method and apparatus for manufacturing Plastic tube and method and apparatus for manufacturing

1995-07-06

1999-03-23

Dye, Rena L.

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

428 352, 428 355, 428124, 428129, 428138, 428192, 428906, 222 92, 222107, 206701, 206719, 206722, B65D 8586

Patent

active

058856765

ABSTRACT:
A plastic tube and a method and apparatus for forming it in which a strip of relatively thin plastic sheet material is cut from a roll of the material and wound around a mandrel. Overlapping ends of the strip are sealed to form the tube. The edge of the strip is inwardly bent to form an inwardly extending lip. When used in the manufacture of a capacitor, the tube is placed in a can on top of the disc of insulating material and a capacitor roll is placed in the tube. The edge of the sheet material can be pre-creased so that when folded inwardly, darts of the material form the lip.

REFERENCES:
patent: 2003326 (1935-06-01), Wellman
patent: 4060179 (1977-11-01), McGhic
patent: 4580702 (1986-04-01), Hatakeyama et al.
patent: 4621763 (1986-11-01), Brauner

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