Title: Machine for the production of packaging wrappers

Abstract: Disclosed is an apparatus and method for the continuous production of packaging wrappers from cut blanks of flat material. A flap-like portion of the blank material is abraded in a particular fashion to produce an area which upon folding and gluing provides a bonded joint having a thickness in the area of the bonding essentially equal to the thickness of the flat material of the wrapper. The packaging wrapper produced possesses an interior surface completely void of protrusions or uneven areas and an overall wrapper of even thickness throughout.

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Inventors: Kohmann, Karl-heinz (Dusseldorf, DE)
Heiber, Wolfgang (Dusseldorf, DE)

Application Number: 05/973664
Filing Date: 1978-12-27
Publication_date: 1981-05-19
Assignee: KOHMANN GMBH & CO FA

Primary Class(es): 493/231 493/264, 493/946, 409/138, 493/366, 493/254
Other Classes: B26D3/06; B31B1/20; B31B1/74; B31B5/36; B31F7/00; B26D3/00; B31B1/14; B31B5/00; B31B21/14
US Patent Ref:

3362294	January, 1968	Oxel	409/138	Apparatus for finishing sheet material
3432375	March, 1969	Rein	93/36PC	METHOD OF RAW EDGE PROTECTION
3495507	February, 1970	Haas et al.	93/58ST	METHOD OF MAKING SIDE SEAM SEALED CONTAINER
3599531	August, 1971	Wright et al.	409/138	RECIPROCATING MARGIN-FINISHING APPARATUS
3604317	September, 1971	Baun	93/58ST	SKIVING MACHINE DEVICE AND METHOD OF PREPARING A PROTECTED PAPERBOARD SIDE SEAM
3789731	February, 1974	Loy	409/138	EDGE TRIMMING APPARATUS
3908524	September, 1975	Shore	93/13	Record jacket making machine

Other Refs:
Primary Examiner: Coan, James F.
Assistant Examiner:
Attorney: Schwartz, Jeffery, Schwaab, Mack, Blumenthal & Koch

Claims: