EP0780222A2 - Procédé et dispositif pour la fabrication de sacs de flans tubulaires mono- ou multi-couche - Google Patents

Procédé et dispositif pour la fabrication de sacs de flans tubulaires mono- ou multi-couche Download PDF

Info

Publication number
EP0780222A2
EP0780222A2 EP96117989A EP96117989A EP0780222A2 EP 0780222 A2 EP0780222 A2 EP 0780222A2 EP 96117989 A EP96117989 A EP 96117989A EP 96117989 A EP96117989 A EP 96117989A EP 0780222 A2 EP0780222 A2 EP 0780222A2
Authority
EP
European Patent Office
Prior art keywords
heated
fixed
areas
floor
hose
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP96117989A
Other languages
German (de)
English (en)
Other versions
EP0780222B1 (fr
EP0780222A3 (fr
Inventor
Fritz Achelpohl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Windmoeller and Hoelscher KG
Original Assignee
Windmoeller and Hoelscher KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Windmoeller and Hoelscher KG filed Critical Windmoeller and Hoelscher KG
Publication of EP0780222A2 publication Critical patent/EP0780222A2/fr
Publication of EP0780222A3 publication Critical patent/EP0780222A3/fr
Application granted granted Critical
Publication of EP0780222B1 publication Critical patent/EP0780222B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B31B70/60—Uniting opposed surfaces or edges; Taping
    • 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
    • B31B70/60—Uniting opposed surfaces or edges; Taping
    • B31B70/61—Uniting opposed surfaces or edges; Taping by applying or securing strips or tape
    • 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
    • B31B70/60—Uniting opposed surfaces or edges; Taping
    • B31B70/64—Uniting opposed surfaces or edges; Taping by applying heat or pressure
    • 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
    • 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
    • B31B2150/0014—Flexible containers made from sheets or blanks, e.g. from flattened tubes with square or cross bottom having their openings facing transversally to 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
    • B31B2150/00—Flexible containers made from sheets or blanks, e.g. from flattened tubes
    • B31B2150/003—Flexible containers made from sheets or blanks, e.g. from flattened tubes made from tubular sheets
    • 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
    • B31B2155/00—Flexible containers made from webs
    • B31B2155/003—Flexible containers made from webs starting from tubular webs
    • 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
    • B31B2160/10—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents
    • B31B2160/106—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents obtained from sheets cut from larger sheets or webs before finishing the bag forming operations
    • 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
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/60—Uniting opposed surfaces or edges; Taping
    • B31B50/72—Uniting opposed surfaces or edges; Taping by applying and securing strips or sheets
    • 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
    • B31B70/26—Folding sheets, blanks or webs
    • B31B70/36—Folding sheets, blanks or webs by continuously feeding them to stationary members, e.g. plates, ploughs or cores

Definitions

  • the invention relates to a method for producing sacks from single or multi-layered tube sections made of paper, in which at least one end of each flat tube section is pulled up to a floor square and the side folds formed thereby are wrapped and glued overlapping one another with partial overlap of the corner folds.
  • the object of the invention is therefore to provide a method of the type specified at the outset, with which the floors drawn up to form a floor square can be easily added and glued.
  • this object is achieved in a method of the type specified at the outset in that the tube sections in the regions to be bonded to one another are provided with coatings of thermoplastic material, the coatings are heated and pressed together.
  • the floors can easily be tightly glued when they are added by completely or partially providing the areas to be glued together with coatings made of thermoplastic material which, after it has been heated, that is, plasticized, can be readily glued to itself.
  • the plastic coatings are applied to the paper in a known manner.
  • the coatings made of thermoplastic material can for example consist of PE (polyethylene).
  • the overlapping side fold is expediently provided on the edge region of its inside with a coating with thermoplastic material.
  • a good adhesion of the overlapping side wrap to the outside of the overlapped side wrap can be achieved, in particular if the entire length of the hose section is provided with a plastic coating.
  • the outside of the added floor which is provided with a coating of thermoplastic plastic
  • a bottom cover sheet is pressed onto it, the bottom cover sheet of which with the thermoplastic coated side has previously been heated.
  • This bottom cover sheet eliminates the need to coat the inside of the overlapping side fold and leads to a particularly dense and firm bond to the bottom.
  • these can be provided over their entire surfaces with coatings made of thermoplastic plastic. These coatings also lead to an increase in the strength of the sacks and to improved resistance to the effects of moisture.
  • the method according to the invention can also be used with particular advantage if the tube sections consist entirely of a film made of thermoplastic material.
  • the method according to the invention can also be used to form the longitudinal seams in the manufacture of the tube sections from flat material webs.
  • the hose sections provided with the raised floors are expediently continuously conveyed transversely, the areas to be welded together being drawn over heating devices, such as heated sheets, plates or swords, which activate the areas to be bonded together by plasticizing the plastic coatings.
  • floor cover sheets are to be glued to the added floors, the surfaces of the floor and the floor cover sheet to be welded to one another are passed over heated plates.
  • a device for carrying out the method according to the invention with a conveyor device which transversely conveys the tube sections provided with the drawn-up bottoms is characterized in that, for turning in the side parts, a frame-fixed heated ruler is provided, around the side edges of which are fixed guide and / or pressure bars, the side inserts fold, a heated sword reaching between the side overlaps that increasingly overlap, which heats the areas of the side overlaps to be glued together.
  • the ruler can have the shape of an isosceles triangle or trapezoid in cross section. The height of the triangle or the trapezoid expediently decreases in the direction of transport.
  • the bottom region of the hose section is pulled over a table top and a partition plate that is fixed to the frame is provided, which between one side of the and the Level of the flat lying hose section folded bottom and the underlying end portion of the hose section engages.
  • a pair of squeeze rollers fixed to the frame is expediently provided, through which each floor passes after being added and glued, so that the parts to be glued together are pressed firmly against one another and good gluing is ensured.
  • each added floor runs under a frame-fixed heating plate, behind which a transport cylinder mounted in the frame is arranged in the conveying direction, which presses a floor cover sheet onto the floor, which is heated on its side facing the floor Coating made of thermoplastic is provided.
  • the transport cylinder can be enclosed over a part of its circumference by a heated curved shell.
  • the device for carrying out the method according to the invention with a conveyor device transversely conveying the hose sections provided with the drawn-up bottoms consists, according to the invention, of heated plates arranged at endless and at the same conveying speed as the conveyor device and parallel to the rotating conveying means, which relate to the Lay the inner areas of the corner folds to be glued to the outer areas to be wrapped and their mutually parallel edges form the folded edges for the side wraps, guide and / or pressure bars fixed to the frame being provided for wrapping the side wraps, the areas of the overlapping wrapped side wraps to be glued together Run over fixed swords and the heated plates are swung in opposite directions before the floors enter the pairs of press rolls.
  • FIG. 1 shows a flat-lying hose section 1, which is provided with an open bottom square 2, which is folded into the plane of the flat-lying hose section 1.
  • the corner inserts 4 have formed in the form of isosceles triangles due to the ground square.
  • the lateral areas of the floor square divided by dashed lines form the side folds 5 which are overlapped when the floor is laid.
  • the outside of the hose section 1 is provided with a coating made of thermoplastic material, for example PE.
  • the outer edge area of the inside of the right side fold 5 is also provided with a coating 6 made of thermoplastic material.
  • Side wraps are heated so that the plastic coatings are plasticized and stick together by overlapping wrapping of the side wraps. When the side folds 5 overlap, they not only stick to one another, but also to the areas of the corner folds covered by them.
  • the hose sections 1 are continuously conveyed in the direction of arrow A by two double belt conveyors 7, of which only the left one is shown.
  • the ends of the tube section 1 provided with the bottom squares are pulled by the double belt conveyors 7 over a fixed tabletop 8, in such a way that the still open bottom squares 2 enter under a sword-shaped ruler 9, the is fixed to the frame and has a cross section in the form of an isosceles triangle or an isosceles trapezoid with a decreasing height in conveying direction A.
  • the side edges 10, 11 of the ruler 8 form folded edges around which the side folds 5 are overlapped during their continuous transport.
  • frame-fixed rods 12 are provided which fold the side folds 5 around the folded edges 10, 11 and press them against the top of the ruler 9.
  • the ruler 9 is heated by heating rods arranged in its interior and not shown.
  • a separating plate 16 In order to prevent one side of the floor folded into the plane of the flat tube section 1 from sticking to the adjacent coated area of the outside of the tube section 1, a separating plate 16 preventing the adhesion grips between the bottom half and the adjacent area of the tube section 1.
  • a bottom cover sheet 21 is glued onto the added bottom 20 folded into the plane of the flat tube section 1.
  • the hose section 1 is continuously provided on its outside with a coating made of thermoplastic material.
  • the bottom cover sheet 21 is also provided on its underside, that is to say on its side facing the bottom, with a coating of thermoplastic material.
  • the floor conveyed flat over the table top 8 runs under a heated plate 22, which heats and plasticizes the top of the added floor coated with plastic.
  • a feed cylinder 23 which is not shown is provided with grippers holding the bottom cover sheet 21, the bottom cover sheet on the added bottom 20.
  • the application cylinder 23 is provided over the part of its circumference shown with a heated bowl-shaped plate 25 which is held fixed to the frame.
  • FIG. 7 shows the hose section 1 with a molded-on and added bottom with a glued-on bottom cover sheet 21.
  • the areas of the floor to be glued together are provided with format orders made of thermoplastic material.
  • FIG. 8 shows a tube section 1 made of paper, which is conveyed in the direction of arrow A and is provided with an open base square 30, which is folded into the plane of the tube section 1.
  • the corner turns 31 of the floor square are provided with adjacent triangular coatings 32 made of thermoplastic material, which are indicated by a shade of gray.
  • the side folds 33 are provided on their outer side areas with format plastic coatings 34, specifically that on the inside and the left one on the outside.
  • heated shoe-like plates 35 are provided, which are fastened to an endless chain 37 which rotates above the table top 36 by means of stamps 38.
  • the format plates 35 run with a speed that corresponds to the conveying speed of the hose sections 1.
  • the format plates 36 lie in the center of the corner inserts 31, as can be seen in FIG. 9, so that they heat the plastic coatings 32 in the format indicated by dashed lines in FIG. 9.
  • the side edges 39 of the format sheets form folded edges around which the side folds 33 are folded down by guide and pressure rods 40 fixed to the frame.
  • the upper sides of the format plates 39 heat the outer areas of the format coatings 32 so that after the overlapping wrapping of the side folds 33 they stick to themselves or to the corresponding outer sides of the floor, which are also provided with format coatings.
  • heated, fixed swords 42 are provided, which heat the coatings 34 on the outside and the inside of the side wraps 33 in the manner shown in FIG. 12.
  • the punches 38 are pivotally attached in their chain brackets 44, with pivot drives being provided which pivot the format plates 39 in the direction of the arrows B and C out of the added bottoms before they run through the nip of the pair of press rolls 45.
  • the device described with reference to FIGS. 10 to 13 can also be used if the outer side of the hose sections is provided with a coating of thermoplastic material.

Landscapes

  • Making Paper Articles (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Laminated Bodies (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
EP96117989A 1995-12-21 1996-11-09 Procédé et dispositif pour la fabrication de sacs de flans tubulaires mono- ou multi-couche Expired - Lifetime EP0780222B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19548110 1995-12-21
DE19548110 1995-12-21

Publications (3)

Publication Number Publication Date
EP0780222A2 true EP0780222A2 (fr) 1997-06-25
EP0780222A3 EP0780222A3 (fr) 1998-05-06
EP0780222B1 EP0780222B1 (fr) 2002-08-14

Family

ID=7780995

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96117989A Expired - Lifetime EP0780222B1 (fr) 1995-12-21 1996-11-09 Procédé et dispositif pour la fabrication de sacs de flans tubulaires mono- ou multi-couche

Country Status (8)

Country Link
US (2) US6095960A (fr)
EP (1) EP0780222B1 (fr)
JP (1) JPH09187874A (fr)
KR (1) KR970033792A (fr)
AT (1) ATE222178T1 (fr)
BR (1) BR9606138A (fr)
CZ (1) CZ330996A3 (fr)
DE (1) DE59609561D1 (fr)

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Publication number Priority date Publication date Assignee Title
DE19840792C2 (de) * 1998-09-08 2003-04-24 Chronos Richardson Gmbh Sack
US6890290B2 (en) * 2001-06-22 2005-05-10 Amplas, Inc. Method and apparatus for producing valve bags
US20030092551A1 (en) * 2001-11-14 2003-05-15 Roland Boss Methods and apparatus for scoring and trimming imaged sheet media
DE10261256B4 (de) * 2002-12-20 2004-11-11 Windmöller & Hölscher Kg Bodenlegevorrichtung
US7013621B2 (en) * 2003-06-18 2006-03-21 Shanklin Corporation Adjustable package geometry web forming apparatus and method
DE102008017446A1 (de) * 2008-04-03 2009-10-15 Windmöller & Hölscher Kg Vorrichtung und Verfahren zur Herstellung von Säcken
DE102008043758A1 (de) * 2008-11-14 2010-12-16 Windmöller & Hölscher Kg Vorrichtung und Verfahren zur Herstellung von Säcken aus Schlauchstücken, welche vorzugsweise Gewebe aus gereckten Kunststoffbändchen umfassen und aus zwei übereinander liegenden Wandungen bestehen
DE102009036556A1 (de) * 2009-08-10 2011-02-17 Windmöller & Hölscher Kg Verfahren und Vorrichtung zur Herstellung eines Sacks oder eines Beutels mit Vliesmaterial sowie Sack oder Beutel, welcher Vliesmaterial umfasst
US9963270B2 (en) * 2013-07-26 2018-05-08 Pouch Pac Innovations, Llc Pouch with smooth sides
DE102019213476A1 (de) * 2019-09-05 2021-03-11 Windmöller & Hölscher Kg Kreuzbodensack aus beschichtetem Papier sowie Verfahren zur Herstellung eines Kreuzbodensacks
DE102021001151A1 (de) * 2021-03-05 2022-09-08 Windmöller & Hölscher Kg Einrichtung und Verfahren zum Zulegen eines aufgezogenen Endes eines flach liegenden Schlauchstücks
CN114834094B (zh) * 2022-05-28 2023-09-15 厦门金锐奇工贸有限公司 一种用于纸袋糊底机的上胶翻底机构

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DE1005820B (de) * 1955-10-17 1957-04-04 Windmoeller & Hoelscher Dampfdichter Klotzbeutel aus mit Thermo-plasten beschichtetem Papier od. dgl. sowie Verfahren und Vorrichtung zu seiner Herstellung
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US3043199A (en) * 1959-10-16 1962-07-10 Windmoeller & Hoelscher Manufacture of cross-bottomed valve bags
US3103856A (en) * 1961-04-24 1963-09-17 Rawe Process and apparatus for manufacturing a flexible container
US3133480A (en) * 1961-06-06 1964-05-19 Quevilly Emballages Method of manufacture of multiwall paper bags and machine for the practical application of the said method
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CZ289183B6 (cs) * 1995-01-25 2001-11-14 Windmöller & Hölscher Zařízení na vytahování konců plochých hadicových odřezků

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Title
None

Also Published As

Publication number Publication date
US6095960A (en) 2000-08-01
US5989172A (en) 1999-11-23
BR9606138A (pt) 1998-11-03
EP0780222B1 (fr) 2002-08-14
ATE222178T1 (de) 2002-08-15
CZ330996A3 (en) 1997-07-16
EP0780222A3 (fr) 1998-05-06
JPH09187874A (ja) 1997-07-22
DE59609561D1 (de) 2002-09-19
KR970033792A (ko) 1997-07-22

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