US3853040A - Process and apparatus for making crossed-end bags from weldable material - Google Patents

Process and apparatus for making crossed-end bags from weldable material Download PDF

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Publication number
US3853040A
US3853040A US00353973A US35397373A US3853040A US 3853040 A US3853040 A US 3853040A US 00353973 A US00353973 A US 00353973A US 35397373 A US35397373 A US 35397373A US 3853040 A US3853040 A US 3853040A
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Prior art keywords
patch
crossed
open
drum
folds
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Expired - Lifetime
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US00353973A
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English (en)
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F Achelpohl
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Windmoeller and Hoelscher KG
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Windmoeller and Hoelscher KG
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Priority claimed from DE19722221376 external-priority patent/DE2221376C3/de
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
    • B65D31/14—Valve bags, i.e. with valves for filling
    • B65D31/142—Valve bags, i.e. with valves for filling the filling port being formed by folding a flap connected to a side, e.g. block bottoms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
    • B65D31/08—Bags or like containers made of paper and having structural provision for thickness of contents with block bottoms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2150/00—Flexible containers made from sheets or blanks, e.g. from flattened tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2150/00—Flexible containers made from sheets or blanks, e.g. from flattened tubes
    • B31B2150/001—Flexible containers made from sheets or blanks, e.g. from flattened tubes with square or cross bottom
    • B31B2150/0012—Flexible containers made from sheets or blanks, e.g. from flattened tubes with square or cross bottom having their openings facing in the direction of movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2160/00—Shape of flexible containers
    • B31B2160/20—Shape of flexible containers with structural provision for thickness of contents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/02—Feeding or positioning sheets, blanks or webs
    • B31B70/022—Holders for feeding or positioning sheets or webs
    • B31B70/024—Rotating holders, e.g. star wheels, drums

Definitions

  • This invention relates to a process and apparatus for making crossed-end bags from weldable material, which bags have an end consisting of open crossed-end folds and an end patch welded to the edges of the open crossed-end folds.
  • the bag-making machine cannot operate at a high rate so that this known machine is not sufficiently economical.
  • the bags can be processed with high accuracy and at a high rate and while they are moved continuously.
  • each tubing section is preferably rotated through whereas the direction of movement remains unchanged. It will also be desirable to erect the crossed-end folds and the end patch for the welding of the side edges of the end patch so that the formation of the longitudinal seam welds on that half of the end portion which previously engaged the remainder of the bag workpiece.
  • the tubing section is desirably rotated through when the first end has been closed and the second end is then pulled open and closed like the first end.
  • the end patch of one end may be shorter than the end opening and together with a valve patch partly overlapped by the end patch may be applied to the open crossed-end folds in such a manner that one end of the end patch covers the edge of one infolded corner portion and one end of the valve patch covers the edge of the other infolded corner portion whereafter the seam welds are provided with join the end patch and the valve patch to the associated infolded corner portion.
  • tubing sections are provided at theopening-defining edges with short slitsbeforethe tubing sections are pulled open so that inwardly extending, free, rectangular end portions are formed at the infolded corner portions as the latter are pulled open.
  • Such tubing sections can be processed in a much simpler manner by the process according to the invention; this will be referred to more in detail hereinafter.
  • a continuously revolving drum provided with means for pulling open and reversely folding the leading end of the tubing section to form open crossed-end folds;
  • a gripper cylinder which rotates in synchromism with the drum on-a stationary axis and serves to apply the end patch or patches to the open crossedend folds;
  • two welding jaws which are associated with each pulling-open station and are mounted on the drum for axial and radial movements and are controlled to lie on the end patch or patches over the insulating fingers during the welding operation;
  • a welding device for forming longitudinal seam welds on the longitudinal edges of the bag workpieces which are being handled by endless conveyors.
  • welding jaw drive means which are much more favorable as regards space requirement and simplicity of adjustment and which comprise a pressure fluid cylinder, preferably a pneumatic cylinder, which is secured in the drum and extends parallel to the drum axis and comprises two oppositely moving pistons, whereas the welding jaws are mounted on the ends of the piston rods connected to such pistons and are radially movable with respect to the drum, in conjunction with a control rail, which is reciprocable parallel to itself in the radial direction of the drum and is engaged by rollers mounted on the carriers for the welding jaws.
  • a pressure fluid cylinder preferably a pneumatic cylinder
  • FIG. 1 is an illustrative embodiment of a bag mad according to the invention
  • FIG. 2 is a sectional view taken on line Il--Il in FIG. 1,
  • FIG. 3 is a sectional view taken on line IIIIII in FIG.
  • FIG. 4 is a sectional view taken on line IV-IV in FIG. 1,
  • FIGS. 5a and 5b are a diagrammatic elevation showing the bag-making machine used to make the bag according to FIGS. 1 to 4.
  • FIGS. 6a and 6b illustrate the processing steps carried out by the bag-making machine shown in FIGS. 5a and 5b;
  • FIG. 7 is an enlarged side elevation showing the endlaying device of the bag-making machine of FIG. 5a;
  • FIG. 8 is a sectional view taken on line VIII-VIII in FIG. 7.
  • FIGS. 9 to 11 show three typical processing steps of the end-laying device of FIGS. 7 and 8;
  • FIG. 12 is a' diagrammatic transverse sectional view showing a welding device for joining the end patches and the valve patch to the longitudinal edges of the crossed-end folds.
  • the bag 1 shown in FIG. 1 has a closed lower end and an upper end provided with a filling valve 2.
  • Each end comprises open crossed-end folds, which are closed by an end patch 3 (lower end) and by an end patch 4 and a valve patch 5 overlapped by the end patch 4 (top end).
  • the ends of the patches 3, 4, 5 are joined by seam welds 6, 7; 6, 7' (FIGS. 2 and 3) to the inner edges of the infolded corner portions 8,9 and 8', 9, respectively.
  • the sides of the patches 3, 4, 5 are joined by seam welds l0, l1 and 10', 11', respectively, to those longitudinal edges of the crossed-end folds which extend between the infolded corner portions.
  • the filling valve 2 is readily formed by the overlap between the end patch 4 and the valve patch 5; this is particularly distinctly apparent from FIG. 2.
  • the bag-making machine shown in FIGS. 5a and 5b and described hereinafter serves for the mass production of the bag shown in FIGS. 1 to 4.
  • a cross cutter 12 of known type serves to cut tubing sections from a tubing A of synthetic thermoplastic sheeting.
  • An end-laying device 13 comprises a continuously revolving drum 26 and forms open crossed-end folds at the leading end of each tubing section.
  • the drum 26 is provided with means for applying the end patch 3 (FIG. 1) to the open crossed-end folds and with means for joining the ends of the end patch to the inside edges of the infolded corner portions of the crossed-end folds by seam welds 6', 7' (FIG. I).
  • the end-laying device 13 is succeeded by a turning device 14, preferably according to the German Pat. No.
  • a second end-laying device 13 is similar to the endlaying device 13 but is provided with means for the simultaneous application of an end patch 4 and of a valve patch 5 (FIG. 1), which is overlapped by the end patch 4, to the open crossed-end folds formed by the endlaying device 13, and joins one end of each of these patches 4, 5 to the infolded corner portions of the crossed-end folds by the seam welds 6, 7.
  • a turning device 14 succeeds the end-laying device 13' and serves to turn the bag workpiece through 90 in a horizontal plane.
  • the turning device 14' is succeeded by a welding device 15 for joining the end patches 3, 4 and the valve patch 5 to the longitudinal edges of the crossed-end folds by the longitudinal seam welds 10, 11; l0, 11 (FIG. 1).
  • FIGS. 6a and 6b illustrate the mode of operation of the bag-making machine shown in FIGS. 5a and 5b.
  • tubing sections S in the length re-. quired for the manufacture of respective bags are cut from a tubing A, which is continuously advanced by a feed roller pair 16.
  • the tubing sections S are advanced further and fed to the end-laying device 13, the design of which is apparent from FIGS. 7 and 8.
  • the end-laying device 13 the leading end of the tubing section is pulled open and is flattened to form open crossed-end folds.
  • the gripper cylinder 18 the end patch 3 is then applied to the open crossed-end folds and by means of lateral welding jaws 35, 36, shown in FIGS.
  • the bag workpiece now enters the turning device 14 and is fed by the latter to the second end-laying device 13'.
  • the turning device 14 By the turning device 14, the bag workpiece is turned in a horizontal plane through 180 in the direction of arrow so that the other, still open end of the tubing section is now the leading end.
  • the tubing section end is pulled open and is flattened to form open crossed-end folds.
  • the gripper cylinder 18' By means of the gripper cylinder 18', the end patch 4 and the valve patch overlapped by the end patch 4 are then applied to the open crossed-end fold.
  • the patches 4, 5 are subsequently joined by seam welds 6, 7 to the infolded corner portions 8, 9 of the crossed-end folds.
  • the end patches 4 and the valve patches 5 are cut from the sheeting webs B and V, which are advanced from the supply rolls 19 and 26. The latter are laterally offset from each other so that the sheeting webs move to the cutting device and the gripper cylinder 18 so as to provide for the desired overlap x of the patches 4, 5.
  • the bag workpiece From the end-laying device 13', the bag workpiece enters the turning device 14, which turns the bag workpiece through 90 so that it is advanced transversely to its longitudinal direction.
  • the two folded ends are erected by the deflecting plates 21, 21 from a flattened position to an upright position and are transferred to the pairs of double belt conveyors 22, 23; 22', 23', which move the bag workpiece having folded ends through the welding device 15, which comprises pairs of radiant heaters 24, 25; 24', 25' and in which the end patches 3, 4 and the valve patch 5 are joined to the longitudinal edges of the crossed-end folds by the longitudinal seam welds 10, l1; 11'.
  • These longitudinal seam welds produced by radiant heaters are flush with the longitudinal edges of the bag end. This is different from the showings of FIGS. 1 and 4, where longitudinal seam welds are shown which have been made with the aid of hot rolls or hot tape.
  • the space requirement may be reduced if the bag workpieces are advanced to the welding device in the manner shown in FIG. 12.
  • Each of the two halves of the crossed-end folds at each end are angled through 45 upwardly and downwardly, respectively, from the plane in which the bag workpieces are advanced so that these two halves at each end include an angle of 90.
  • the crossed-end halves are guided by stationary guide plates 69, 70, '71 and 69, 70', 71. respectively, as they move past the radiant heaters 24a, a or 24a, 25a'..
  • the turning device 14, the end-laying device 13, and the welding device22-25 may be omitted if the bags are to be closed only at one end.
  • the end-laying device 13 or 13 is shown on a larger scale in FIGS. 7 and 8.
  • the device comprises a continusection at its leading open end.
  • the diameter of the gripper cylinder and its angular position relative to the drum 26 are selected so that the vacuum strip 29 of the cylinder always rolls on one of the vacuum strips 27, 27', 27" of the drum.
  • Associated with the vacuum strip 27 are a lateral pair of grippers 30, 31, a pair of insulating fingers 32, 33, a number of grippers 34 on the leading edge of the vacuum strip, and a pair of welding jaws 35, 36.
  • the pair of lateral grippers 30, 31 are arranged to engage the tubing section S at its side edges and to retain it on the drum 26 at the point where the folding of the end is to be initiated (see FIGS. 9 and 10).
  • the pair of insulating fingers 32, 33 are arranged on the drum 26 and controlled to move over the vacuum strip 27 (arrow 44) opposite to the direction of rotation of the drum and to engage the vacuum strip 27 adjacent to the corner portions 8, 9, and 8', 9', respectively, as the same are infolded.
  • the pair of insulating fingers are secured to levers 37, 38 and, as is apparent from FIG. 7, are curved like arcs of a circle in accordance with the periphery of the drum 26.
  • the levers 37, 38 have a common pivot 66, which is mounted at one end in bellcrank levers 39 and at the other end in links 40, which are pivoted on aligned pivots 41, 42 mounted on the drum.
  • a stationary pusher cam 43 imparts to the levers 37, 38 a pivotal movement in the peripheral direction of the drum (arrow 44) as the latter rotates.
  • the stationary pusher cam 45 imparts to said levers an additional radial movement (arrow 46) by means of the bell-crank lever 39.
  • the pusher cams 43, 45 are shaped so that the fingers 32, 33 move from the end position shown on the left in FIG. 7 to the end position shown at the top in FIG. 7 as the end of the tubing section is pulled open. This movement of the fingers 32, 33 is indicated in FIG. 9.
  • the welding jaws 35, 36 are provided with pairs of guide rods 46, 47, which are mounted in carriers 48, 49 to be radially displaceable relative to the drum 26.
  • the carriers 48, 49 are mounted on the end of the piston rods associated with two oppositely moving pistons 50, 51, which slide in the common pneumatic cylinder 52, which is parallel to the axis of the drum 26. Compressed air is admitted at 53 between the pistons 50, 51 through a bore, not shown, in the drum shaft and a control valve, not shown, which is mounted on said shaft.
  • the welding jaws 35, 36 are moved from their outer position, shown in solid lines, to the inner position, shown in dash-dot lines, in a direction which is parallel to the axis of the drum; this is indicated in FIG. 8.
  • the welding jaws 35, 36 are exactly over the insulating fingers 32, 33.
  • the pairs of radial guide rods 46, 47 carry rollers 58, 59, which by springs 56, 57 are urged against a control bar 60, which is parallel to the axis of the drum 26.
  • This control bar is movable in parallel to itself and is linked to the drum, e.g., by parallel-motion links 61, 62.
  • an actuator 64 which is pivoted at 63 to the control bar 60, the latter is radially reciprocated to impart to the welding jaws 35, 36 a radial movement with respect to the drum in that the bar-60 moves the pairs of welding jaws 35, 36 from their inner position, shown in dash-dot lines in FIG. 8, radially against the shell of the drum so that they engage the pairs of insulating fingers 32, 33 and lift from the latter after an interval of time, which is independent of the machine cycle and controlled by a timer. Thereafter, the fingers 32, 33 re turn to their outer position, shown in solid lines.
  • a gripper cylinder 18 is associated with the drum 26 and feeds the end patch 3, 4 and, if desired, the valve patch to the bag workpiece which is disposed on the drum.
  • another gripper cylinder 65 for removing the bag workpiece and for forwarding it to the turning device 14 is associated with the drum 26.
  • the tubing section S is gripped at its leading open end by the vacuum strip 29 of the gripper cylinder 28, and as the tubing section S rolls on the drum 26 the tubing section S is engaged on the other side face by the vacuum strip 27 of the drum 26. As a result, the leading end is pulled open.
  • the point where the end folds begin is controlled by the lateral grippers 30, 31, which engage the tubing section at both'side edges and retain it on the drum.
  • the insulating fingers 32, 33 as shown in FIG.
  • the described folding to form open crossed-end folds is performed during the rotation of the drum 26 from the gripper cylinder 28 to the gripper cylinder 18.
  • the gripper cylinder 18 rotating in synchronism with the drum 26 now lays the end patch 2 or, if the end is to be provided with a filling valve 2, the end patch 4 and the valve patch 5 overlapped by the end patch 4, on the open crossed-end folds. At their leading edge, these edges and the leading edge of the crossed-end folds are gripped and exactly held in position by the grippers 34,
  • the welding jaws 35, 36 move from their outer position shown in solid lines in FIG. 8 over 5 and beyond the infolded corner portions of the end folds into their inner position, shown in dotted lines, and in said inner position engage the inner ends of the infolded corner portions, which inner ends rest on the insulating fingers 32, 33, and the jaws also engage the ends of the end patches 3, 4 and of the valve patches 5, which ends overlap said infolded corner portions. Said patches are thus joined to the infolded corner portions by the seam welds 6, 7 and 6, 7' (FIG. 11).
  • the insulating fingers 32, 33 prevent a welding of the infolded corner portions to the sides of the bag ends.
  • This welding operation is performed as the drum rotates from the gripper cylinder 18 to the gripper cylinder 65. Shortly before the end folds arrive at the gripper cylinder 65, the welding jaws 35, 36'are returned to their outer position and the insulating fingers 32, 33 are returned to their initial position, shown on the left in FIG. 7, and the lateral grippers 30, 31 are opened. The workpiece which is now retained on the drum only by the grippers 34 is then received by the gripper cylinder 65 moving in synchronism and is transferred by the latter to succeeding conveyors 68, which feed the workpiece to the turning device 14 or 14, which is shown in FIGS. 5a and 5b.
  • the end when the end has been finished to that extent and erected upright by the deflecting plates 21, 21, the end is squared along the lines 74, 75, shown in dotted lines in FIG. 11, by a squaring device 76, 77 shown in FIG. 5 before the end moves into the welding device 15, in which the longitudinal seams 10, ll, 11' are formed.
  • the crossed end leaving the welding device 15 has the configuration shown on the right in FIG. 5b and in FIG. 1.
  • Apparatus for making crossed-end bags from weldable material which bags have an end consisting of open crossed-end folds and an end patch welded to the edges of the open crossed-end folds, characterized by the following features:
  • a gripper cylinder which rotates in synchronism with the drum on a stationary axis and serves to apply the end patch or patches (3 and 4, to the open crossed-end folds;
  • grippers which are mounted on the drum and receive the end patches from the gripper cylinder and which grip and retain the end patches and the crossed-end folds at their leading edges;
  • two welding jaws (35, 36) which are associated with each pulling-open station and are mounted on the drum for axial and radial movements and are controlled to lie on the end patch or patches over the insulating fingers during the welding operation;
  • a welding device for forming longitudinal seam welds (10, ll, l0, 11) on the longitudinal edges of the bag workpieces which are being handled by endless conveyors.
  • Apparatus according to claim 5 characterized by a pressure fluid cylinder (52), which is secured in the drum (26) and extends parallel to the drum axis and comprises two oppositely moving pistons (50, 51), whereas the welding jaws (35, 36) are mounted on the ends of the piston rods connected to such pistons and are radially movable with respect to the drum, in conjunction with a control rail (60), which is reciprocable parallel to itself in the radial direction of the drum and is engaged by rollers (58, 59) mounted on the carriers for the welding jaws.
  • a pressure fluid cylinder 52
  • the welding jaws 35, 36
  • stationary guide plates (69 to 71; 69' to 71) are provided, which serve to guide on both sides the erected end halves adjacent to the welding device (15) for forming the longitudinal end seam welds, which welding device is suitably provided with radiant heaters (24a, 25a, 24a, 25a), and double belt conveyors (72, 73; 72', 73') are provided, which engage the side walls of the bag close to the folded-end edges.

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US00353973A 1972-05-02 1973-04-24 Process and apparatus for making crossed-end bags from weldable material Expired - Lifetime US3853040A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722221376 DE2221376C3 (de) 1972-05-02 Verfahren und Vorrichtung zum Herstellen von Kreuzbodensäcken aus schweißbarem Werkstoff

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US3853040A true US3853040A (en) 1974-12-10

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US00353973A Expired - Lifetime US3853040A (en) 1972-05-02 1973-04-24 Process and apparatus for making crossed-end bags from weldable material

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US (1) US3853040A (en])
JP (1) JPS4942472A (en])
ES (1) ES414214A1 (en])
FR (1) FR2183497A5 (en])
IT (1) IT982832B (en])
NL (1) NL7305914A (en])

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3974747A (en) * 1973-08-28 1976-08-17 Dai Nippon Printing Company Limited Machine for manufacturing square bags of thermoplastic film
US4264317A (en) * 1978-07-14 1981-04-28 Windmoller & Holscher Method of making valved sacks provided with cross-bottoms
US4453270A (en) * 1982-05-19 1984-06-05 Westvaco Corporation Pasted valve stepped end bag
US4725262A (en) * 1981-12-29 1988-02-16 Masayoshi Yokomatsu Process and apparatus for the manufacture of a valved sack with self-sealing valve
US5203758A (en) * 1991-03-22 1993-04-20 Windmoller & Holscher Method for manufacturing a sack or bag with a bottom being rectangular in the filled state and with a handle, and a sack or bag manufactured in accordance with said method
US6095960A (en) * 1995-12-21 2000-08-01 Windmoller Holscher Method and device for manufacturing bags from tubular paper sections of a single layer or multiple layers
US20040224830A1 (en) * 2003-05-07 2004-11-11 Newport Corp. Method for manufacturing angulated bottom paper bag with handle in rotary type bag manufacturing machine
US20050176569A1 (en) * 2004-02-05 2005-08-11 Wold James T. Method of folding flat bottom bag
US20070269573A1 (en) * 2006-05-17 2007-11-22 Carol Boyer Device and method for distribution of condiments
US20130156352A1 (en) * 2010-08-25 2013-06-20 Windmoeller & Hoelscher Kg Sack and method and device for producing sacks
US20170203531A1 (en) * 2016-01-19 2017-07-20 S. C. Johnson & Son, Inc. System and process for making a pouch or container

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2648263A (en) * 1948-10-02 1953-08-11 Arthur W Richens Method of making bags
US3043199A (en) * 1959-10-16 1962-07-10 Windmoeller & Hoelscher Manufacture of cross-bottomed valve bags
US3266387A (en) * 1962-10-16 1966-08-16 Windmoeller & Hoelscher Method and machine for making bags
DE1226869B (de) * 1963-08-16 1966-10-13 Windmoeller & Hoelscher Bodenlegemaschine zum Herstellen von Kreuzboden-Ventilsaecken im Querfoerderverfahren
US3473446A (en) * 1966-03-29 1969-10-21 Marius Berghgracht Process for the manufacture of paper or similar multi-ply bags,and bags obtained by the process

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2648263A (en) * 1948-10-02 1953-08-11 Arthur W Richens Method of making bags
US3043199A (en) * 1959-10-16 1962-07-10 Windmoeller & Hoelscher Manufacture of cross-bottomed valve bags
US3266387A (en) * 1962-10-16 1966-08-16 Windmoeller & Hoelscher Method and machine for making bags
DE1226869B (de) * 1963-08-16 1966-10-13 Windmoeller & Hoelscher Bodenlegemaschine zum Herstellen von Kreuzboden-Ventilsaecken im Querfoerderverfahren
US3473446A (en) * 1966-03-29 1969-10-21 Marius Berghgracht Process for the manufacture of paper or similar multi-ply bags,and bags obtained by the process

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3974747A (en) * 1973-08-28 1976-08-17 Dai Nippon Printing Company Limited Machine for manufacturing square bags of thermoplastic film
US4264317A (en) * 1978-07-14 1981-04-28 Windmoller & Holscher Method of making valved sacks provided with cross-bottoms
US4725262A (en) * 1981-12-29 1988-02-16 Masayoshi Yokomatsu Process and apparatus for the manufacture of a valved sack with self-sealing valve
US4453270A (en) * 1982-05-19 1984-06-05 Westvaco Corporation Pasted valve stepped end bag
US5203758A (en) * 1991-03-22 1993-04-20 Windmoller & Holscher Method for manufacturing a sack or bag with a bottom being rectangular in the filled state and with a handle, and a sack or bag manufactured in accordance with said method
US6095960A (en) * 1995-12-21 2000-08-01 Windmoller Holscher Method and device for manufacturing bags from tubular paper sections of a single layer or multiple layers
US6932754B2 (en) * 2003-05-07 2005-08-23 Newport Corp. Method for manufacturing angulated bottom paper bag with handle in rotary type bag manufacturing machine
US20040224830A1 (en) * 2003-05-07 2004-11-11 Newport Corp. Method for manufacturing angulated bottom paper bag with handle in rotary type bag manufacturing machine
US20050176569A1 (en) * 2004-02-05 2005-08-11 Wold James T. Method of folding flat bottom bag
US6991592B2 (en) * 2004-02-05 2006-01-31 Genpak Llc Method of folding flat bottom bag
US20070269573A1 (en) * 2006-05-17 2007-11-22 Carol Boyer Device and method for distribution of condiments
US20130156352A1 (en) * 2010-08-25 2013-06-20 Windmoeller & Hoelscher Kg Sack and method and device for producing sacks
US9205957B2 (en) * 2010-08-25 2015-12-08 Windmoeller & Hoelscher Kg Sack and method and device for producing sacks
US20170203531A1 (en) * 2016-01-19 2017-07-20 S. C. Johnson & Son, Inc. System and process for making a pouch or container
CN110744864A (zh) * 2016-01-19 2020-02-04 S.C.约翰逊父子公司 用于制作袋或容器的系统和方法
US10919252B2 (en) * 2016-01-19 2021-02-16 S. C. Johnson & Son, Inc. System and process for making a pouch or container
US11904568B2 (en) * 2016-01-19 2024-02-20 S.C. Johnson & Son, Inc. System and process for making a pouch or container

Also Published As

Publication number Publication date
NL7305914A (en]) 1973-11-06
DE2221376B2 (de) 1975-07-10
IT982832B (it) 1974-10-21
JPS4942472A (en]) 1974-04-22
DE2221376A1 (de) 1973-11-15
FR2183497A5 (en]) 1973-12-14
ES414214A1 (es) 1976-01-16

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