Process and machine for manufacturing a tubular element, notably for producing boxes.
Kind Code:
A1
Abstract not available for EP0011551
Abstract of corresponding document: US4308023
A process and machine for manufacturing a tubular element, for example for use in forming boxes, in which a strip of material is wound around a mandrel having a cross-section corresponding to that of the tubular element to be formed. The strip of material is arranged to extend in a plane and the mandrel is applied against the strip in a direction perpendicular to said plane to cause lateral parts of the strip to lift up on either side of the mandrel and to define two flaps projecting above the mandrel. A force is then exerted on each of the flaps in a direction parallel to said plane to fold the flaps down onto the mandrel and to bring their free edges into abutment.
Abstract of corresponding document: US4308023
A process and machine for manufacturing a tubular element, for example for use in forming boxes, in which a strip of material is wound around a mandrel having a cross-section corresponding to that of the tubular element to be formed. The strip of material is arranged to extend in a plane and the mandrel is applied against the strip in a direction perpendicular to said plane to cause lateral parts of the strip to lift up on either side of the mandrel and to define two flaps projecting above the mandrel. A force is then exerted on each of the flaps in a direction parallel to said plane to fold the flaps down onto the mandrel and to bring their free edges into abutment.
Inventors:
Bidegain, Georgy
Application Number:
EP19790400833
Publication Date:
05/28/1980
Filing Date:
11/08/1979
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Export Citation:
Assignee:
Embadac SA. (FR)
International Classes:
B31B3/00; B31B3/28
European Classes:
B31B3/28G
Foreign References:
| FR633406A | ||||
| CH194467A |