Title:
METHOD AND EQUIPMENT FOR MAKING POLYGONAL SECTIONAL PACKAGE SLEEVE
Document Type and Number:
Japanese Patent JPS51150488
Kind Code:
A
Abstract:
The present invention provides a method and an apparatus for producing a packaging sleeve of polygonal cross-section, particularly adapted to be foldably collapsed, wherein circular or tubular sleeve stock is formed on a stationary spindle or mandrel from a plurality of glued, thin layers of paper, fabric, plastic material or the like, wound or wrapped one over the other. The sleeve is thereafter shaped into a polygonal cross-section. During the shaping of the tubular packaging sleeve while it is in the glue-wetted state, at least one continuous folding edge impressed into the sleeve wall and extending in the longitudinal direction of said sleeve is press-formed at the desired longitudinally extending edge corners of the polygonal cross-section. The sleeve, wrapped to a final wall thickness after the winding or wrapping operation, is subjected, in the form of individual, separated sections or lengths, to a shaping operation to form a polygonal cross-section at a separate rate of feed, simultaneously with the formation of the folding edges.
Inventors:
FURANTSU YOTSUTO ZAURU
Application Number:
JP3206976A
Publication Date:
December 24, 1976
Filing Date:
March 25, 1976
Export Citation:
Assignee:
SAUL FRANZ J
International Classes:
B65B9/18; B31B50/88; B31C11/02; (IPC1-7): B31B1/28; B65B9/12