摘要:
The present invention is directed to a method forming a bottom-gusseted package, wherein each package includes an inwardly-extending, pleat-like gusset at the bottom of the package. To permit heat-sealing formation of each package, the sleeve from which each gusset is formed comprises a lamination of two differing polymeric materials, so that only an exterior surface of each sleeve exhibits the desired heat-sealing characteristics. To facilitate package formation, the sleeves from which the bottom gussets are formed are maintained in a temporarily closed or sealed configuration during package formation by providing a preferably frangible bond or seal at the edge of each sleeve. This result is preferably achieved by folding the laminate material, and temporarily sealing or joining an outer layer of the laminate material from which gusset is formed, while an inner layer is maintained in an unsealed condition.
摘要:
A machine for producing bags comprises a station (4) for forming a tube (2a), which forms a band (2) of transversely perforated flexible material into a tube (2a), a holding station (6) for retaining the tube (2a), a folding station (7) for forming a bottom (20) at the end of the tube (2a), a folding roller (72) comprising a folding blade (720) for folding a flap (21) at the end of the tube (2a) and a tear-off bar (722) for pinching the tube (2a) against the drum (71), the folding station (7) and the holding station (6) being configured to jointly exert a traction on the tube (2a) and detach a portion of the tube (2a). The tear-off bar (722) is disposed behind the folding blade (720), the machine controlling the rotation of the folding station (7) in order to synchronise the drum (71) with the front of the tube (2a).
摘要:
Method for continuously manufacturing a bag for packaging food products from a sheet of plastic film, according to which: -the film is subjected to successive folding operations so as to produce lateral gussets (1c, 1d) between two walls (1a, 1b), -a longitudinal weld line (L1) is made at the connection of the external edges of the gussets (1c, 1d) to the walls (1a, 1b), -a transverse weld line (L2) forming a bottom (1e) is made at regular intervals, -an oblique weld line (L3) is made at regular intervals between the external edges of the gussets (1c, 1d) and the transverse weld line (L2) forming the bottom (1e), -a triangular zone produced by the oblique weld lines (L3) and the bottom (1e) is cut out, -a cut is made at the bottom (1e) having symmetrically, on both sides, oblique lines so as to form a bag opening.
摘要:
Die Erfindung betrifft eine Trennschweißeinrichtung zum bereichsweisen Fügen und bereichsweisen Trennen von verschweißbaren Folienbahnen (2, 3) mit einer temperierbaren Arbeitsfläche (4) zur Auflage von zu fügenden und zu trennenden Folienbahnen (2, 3), die eine elektrische Heizeinrichtung (11, 12, 13) umfasst, sowie mit einem Gegenhalter (15) zur bereichsweisen Einleitung von Druckkräften auf die Folienbahnen (2, 3), der mit der Arbeitsfläche (4) einen variabel einstellbaren Arbeitsspalt (32, 33, 34) begrenzt und der zwei voneinander beabstandet angeordnete Fügestempel (29, 30) und einen zwischen den Fügestempeln (29, 30) angeordneten Trennstempel (31) umfasst, wobei der Trennstempel (31) und/oder wenigstens ein Fügestempel (29, 30) beweglich am Gegenhalter (15) aufgenommen sind. Erfindungsgemäß ist vorgesehen, dass dem Trennstempel (31) und/oder dem Fügestempel (29, 30) jeweils ein Kraftsensor (45) und/oder jeweils ein Bewegungssensor (44), insbesondere ein Wegsensor, zur Ermittlung eines vom Trennstempel (31) bestimmten Trennverlaufs und/oder eines vom Fügestempel (29, 30) bestimmten Fügeverlaufs zugeordnet sind.
摘要:
A segment of a tubular element (10) made of a sheet of synthetic material is folded longitudinally twice respectively along a first centerline (L1) and a successive second centerline (L2) so as to have, in a flattened configuration, eight superimposed layers along its entire width. The eight layers are mutually heat-sealed along a transverse heat-sealing line (16) that is proximate to an end of the segment of tubular element (10) and forms the bottom of the bag.
摘要:
A paper/plastic-film carrier bag (40), comprises: a cylindrical receiving portion, which is configured to receive an approximately cubic-shaped article (20); and a long-shaped handgrip portion (42, 43), being formed extending from one of upper sides (44, 45) of said cylindrical receiving portion, on a side of which is in contact any one of sides of the approximately cubic-shaped article, and reaching to another upper side of the cylindrical receiving portion facing thereto. And a method for manufacturing the above, in particular, the plastic-film carrier bag, comprises the following steps of: a step of producing a fully-closed sack by conducting a welding process on a cylindrical plastic film progressing in an in-line process, for sealing a portion to be a side surface of the plastic-film carrier bag and separating from; a step of removing an unnecessary portion from one or plural pieces of said fully-closed sack (s) being piled up, on a side of a handgrip portion along one edge thereof being inparallel with a direction of progress of the in-line process; and thereby manufacturing the plastic-film carrier bag described above.
摘要:
The invention describes a device (1) for producing bags from hose-shaped material (2), comprising fabric from stretched plastic strips, comprising at least: - at least one hose formation device (13) or hose unwinding device (3) with which hose-shaped material (2) can be produced from web-shaped material (14) for producing bags (12) and wherein the hose-shaped material (2) can be conveyed in a transport direction (x') and - at least one hose isolation device (6) with which (6) hose pieces (16) can be isolated out of the hose-shaped material (2) and - a floor formation device (8, 9, 10, 11) with which (8, 9, 10, 11) floors can be formed at at least one end of a hose piece (16), - at least one transport device for transporting the hose pieces (16) in a transport direction (x) within the floor formation device (8, 9, 10, 11) running perpendicular to the extension direction (y) thereof. The transport direction (x') of the hose-shaped material (2) in the hose formation (13) or hose unwinding device (3) and the transport direction (x) of the hose pieces in the transport device are parallel to one another.
摘要:
Method for manufacturing draw string bags comprising the steps of providing a plastic material, extruding the plastic material to a longitudinal tubular foil (2), cutting (104) longitudinally at least two strips (10, 11) from said tubular foil, thereby providing a U-profiled foil (3) having two legs with an inner side (16), an outer side (17) and a free cut edge (18), leading (106) the at least two strips on either outer side of said legs adjacent the free cut edge, folding (108) the foil adjacent the free cut edges over said strips to form hems (8) and sealing the hems (8) to form tubular channels (19) in which the strips extend, thus forming draw strings (9), and sealing (110) transversely the U-profiled foil to provide a plurality of bags.