Abstract: This invention relates to packaging "sleeves", or multi-sided, tubular structures which may be used for packaging articles, as blanks for boxes, or the like, which are made from multiple layers of spirally wrapped strips of paper, fabric, or the like; which sleeves may have discrete corners at the junctures of their sidewalls, which corners may be permanent where rididity is desired, or foldable so that the sleeves may be flattened for storage and/or shipment.

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.

Abstract: This invention relates to packaging "sleeves", or multi-sided, tubular structures which may be used for packaging articles, as blanks for boxes, or the like, which are made from multiple layers of spirally wrapped strips of paper, fabric, or the like; which sleeves may have discrete corners at the junctures of their sidewalls, which corners may be permanent where rididity is desired, or foldable so that the sleeves may be flattened for storage and/or shipment.

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.

Abstract: The invention relates to packaging "sleeves," or multi-sided, tubular structures which may be used for packaging articles, as blanks for boxes, or the like, which are made from multiple layers of spirally wrapped strips of paper, fabric, or the like; which sleeves may have discrete corners at the junctures of their sidewalls, which corners may be permanent where rididity is desired, or foldable so that the sleeves may be flattened for storage and/or shipment.

Abstract: The present invention provides a packing container or receptacle comprising a shell body made of paper, cardboard, fabric, plastic or metal films and the like and having, for example, a circular or rectangular or otherwise polygonal cross-section, with the cover and/or bottom parts of said shell body including an axially extending side wall across the axial depth of which said cover is adapted to be inserted, at least partially, into an open end of said shell body, whereby the side wall of said container cover or of said bottom part, respectively, and the edge of said container or receptacle are secured against unintentional opening by means of fastener elements, wherein the improvement comprises that said fastener elements include at least one narrow clip flap being mounted to the upper edge of said container cover or of said bottom part, respectively, and being adapted to be flexibly folded from the outer side around the edge of said container or receptacle and which clip flap carries a stiff, pin-like lug