A corrugated member comprising a top web (2) and a carrier web (3) is manufactured by stepwise forward feed movement of the carrier web, with simultaneous deformation of the top web and joining of the two webs. At a shaping station (1), a deformation element (6) is first introduced between the top web (2) and the carrier web (3), and the top web is pressed against the carrier web by a first pressing means (4), downstream of the deformation element. Then, upstream of the deformation element (6), the top web (2) is pressed against the deformation element by a second pressing means (5), stretched over the deformation element, and joined to the carrier web (3).

The present invention relates to a printed paper folding apparatus comprising: conveyor means provided from the upstream side of a folded paper conveying path located below a folder unit to a folded paper cutting position on the downstream side thereof so as to convey a sheet of printed paper which is folded and discharged by the folder unit in a zigzag fashion; a folded paper separating position indicating device provided along the paper conveying path so as to indicate separating positions at intervals of a predetermined number of folds of the printed paper which is folded and discharged by the folder unit; a folder paper cutting device provided by the cutting position so as to automatically cut the paper, which is continuously conveyed by the conveyor means along the conveying path, into an upstream portion and a downstream portion relative to the conveying path; and a paper sorting device provided near the cutting position so as to automatically sort the upstream portion of the paper from the downstream portion thereof.

A filter comprising a composite sheet bent like a pleat and composed of a laminate of at least two monolayer sheets, in which the bent portions are fusion-welded, is provided in order to improve filtering properties while carrying out the composing and pleating processes in one process. A device for manufacturing the filter is also provided. The device comprises, for example: a pair of star-shaped gear type ribbed rolls engaged with each other for heating the composite sheet to temperatures suitable to fusion-weld the same at the front end of the gear while bending the composite sheet like a pleat having a bent width corresponding to the depth or height of the gear; star-shaped gear type bending roll for further bending the heated composite sheet like a pleat; and a pair of heating plates positioned opposed each other at a distance corresponding to the bent width of the pleat. In this device, the composite sheet is selectively and linearly heated and fusion-welded at the bent portions in contact with the front end of the gear while being bent, and it is further bent by the bending roll and then passed through between the heating plates where the composite sheet is heated and fusion-welded at the bent portions from the outer side thereof.

A filter insert and a method for producing the same in which the filter insert has an accordion-folded filter medium. In a first operating step, folded edges are impressed on the filter medium. Subsequently, by glue application devices which are provided with glue application nozzles, at least two glue beads are applied to the surface of the filter medium and the folding is carried out subsequently. At least one of the glue application devices is movable transversely to the transport direction of the filter medium.

A recyclable cushioning material for packaging obtained by forming a cushioning material for packaging used to protect articles supplied for physical distribution from being impacted with one sheet of corrugated fiberboard and a method and device for manufacturing the cushioning material, wherein a plurality of cutting lines (11 to 21) are formed in one sheet of corrugated fiberboard (10) in parallel with each other in the direction perpendicular to a direction in which the pleats of the corrugated fiberboard extend and a plurality of connection parts (25) are formed intermittently on each of these cutting lines so that a plurality of unit corrugated fiberboard (41 to 52) can be folded up alternately each other, openings (30 to 33) including the cutting lines are formed in the plurality of unit fiberboard (46 to 52) located on the inner side, and zig-zag foldings at the cutting lines (11 to 21) in which hump-folds and trough-folds are formed alternately each other are performed simultaneously by a zig-zag folding device (70), and the pleats are glued with gluing nozzles (82, 83) and pressed by a cylinder (87) so as to connect and stack the unit corrugated fiberboard (41 to 52) to each other, whereby the cushioning bodies for packaging (57 to 60) formed of a corrugated fiberboard stacked body having an article supporting part (55) can be assembled automatically.