EP2206600B1 - Verfahren zur Herstellung eines Folienbeutels - Google Patents

Verfahren zur Herstellung eines Folienbeutels Download PDF

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Publication number
EP2206600B1
EP2206600B1 EP09016162.1A EP09016162A EP2206600B1 EP 2206600 B1 EP2206600 B1 EP 2206600B1 EP 09016162 A EP09016162 A EP 09016162A EP 2206600 B1 EP2206600 B1 EP 2206600B1
Authority
EP
European Patent Office
Prior art keywords
film
strip
bag
folded
material web
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.)
Not-in-force
Application number
EP09016162.1A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2206600A2 (de
EP2206600A3 (de
Inventor
Detlef Stöppelmann
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.)
Mondi Halle GmbH
Original Assignee
Mondi Halle GmbH
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 Mondi Halle GmbH filed Critical Mondi Halle GmbH
Priority to PL09016162T priority Critical patent/PL2206600T3/pl
Publication of EP2206600A2 publication Critical patent/EP2206600A2/de
Publication of EP2206600A3 publication Critical patent/EP2206600A3/de
Application granted granted Critical
Publication of EP2206600B1 publication Critical patent/EP2206600B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING 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
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00Making flexible containers, e.g. envelopes or bags
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING 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
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00Making flexible containers, e.g. envelopes or bags
    • B31B70/74Auxiliary operations
    • B31B70/86Forming integral handles or mounting separate handles
    • B31B70/864Mounting separate handles on bags, sheets or webs
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING 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
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2155/00Flexible containers made from webs
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING 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
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2155/00Flexible containers made from webs
    • B31B2155/002Flexible containers made from webs by joining superimposed webs, e.g. with separate bottom webs
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING 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
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2160/00Shape of flexible containers
    • B31B2160/10Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING 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
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2160/00Shape of flexible containers
    • B31B2160/20Shape of flexible containers with structural provision for thickness of contents
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING 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
    • B31BMAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00Making flexible containers, e.g. envelopes or bags
    • B31B70/74Auxiliary operations
    • B31B70/86Forming integral handles or mounting separate handles
    • B31B70/864Mounting separate handles on bags, sheets or webs
    • B31B70/87Applying handles on one side of a moving longitudinally folded web, e.g. after cutting a tubular web longitudinally; Applying handles on both sides of a moving web and folding this web longitudinally afterwards

Definitions

  • the invention relates to the production of a foil bag, which has at least one grip band.
  • foil bags can be easily transported even with a high weight. From the practice open foil bags are known as simple shopping bags or foil packaging bags both at its upper end, which are closed before the removal of the contents.
  • a method for producing a film bag open at its end is known from US 3,850,724 known.
  • the strips of material formed from a heat-sealable film are first folded in a U-shape and subsequently placed on a carrier sheet in a further process step.
  • the so prefabricated carrying handle can then be attached to a bag film before or after the formation of a film tube, wherein the carrying handle can be arranged both on the inside, as well as on the outside of the film bag to be formed. Since the carrying handle must be prefabricated on different devices in several steps, the described method is expensive. In particular, the speed to be achieved is limited by the required provision of prefabricated carrying handles.
  • the EP 1 712 482 A1 relates to a foil bag with bag surfaces and at least one handle made of a heat-sealable film, the bag surfaces having a bag-inside layer of a heat-sealable material.
  • the bag surfaces window-like, spaced from the edges of the film bag openings are provided, which are covered by foil slips, wherein the sheets of foil on the heat-sealable film inside layer the bag surfaces are attached.
  • the at least one carrying handle is sealed with its ends in the region of the openings from the outside on the foil strip.
  • the present invention has the object to provide a method for producing a film bag, which allows in a simple and reliable manner at a high throughput the formation of foil bags, which are provided with grip bands.
  • Solution to the problem and object of the invention is a method for producing a film bag, being supplied in an unfolded state in a process step for attachment of a strip of material provided as a handle strip and subsequently folded over the ends, the folded ends of the strip of material by a pivoting movement a provided for the formation of the film bag material web are placed and positively connected thereto and the pivoting movement is performed about an outside of the folded strip of material pivot axis, which is formed obliquely relative to the surface normal of the material web, that the pivot axis starting from the surface normal in the longitudinal direction Material web is tilted by a tilt angle.
  • the folded strip of material is fed laterally to the intended fastening point during rotation about the pivot axis lying outside.
  • the material strip By tilting the pivot axis compared to the surface normal of the material web, however, the material strip is additionally lowered and thus placed with its ends on the material web, so that an immediately following attachment of the ends to the material web is made possible.
  • a lateral feed and a lowering are combined by a single pivot movement about a pivot axis tilted in the longitudinal direction of the material web by a tilt angle.
  • the strip of material is folded in such a way that its folded-over ends and a middle section connecting the ends lie in one plane.
  • the pivot axis is substantially perpendicular to this plane.
  • this can be held on an arm, holder, carrier or the like.
  • the tilt angle is preferably between 3 ° and 30 °, more preferably between 10 ° and 20 °. It should be noted that at a low tilt angle only a relatively small reduction and at a large tilt angle there is a risk that the ends of the strip of material when folded hang over uncontrolled and so can not be fixed.
  • two grip bands are provided for producing a film bag, which are arranged on opposite side surfaces of the film bag. Accordingly, it is usually provided that for the formation of a film bag, two strips of material are fed, folded and fastened.
  • the method for producing a film bag comprises, as further method steps, feeding a bag film, forming openings in the bag film, preferably by punching, attaching at least one film pad to a first side of the bag film to cover the openings, folding the film Bag film to a formed as a film tube material web, wherein the film strip is disposed on the inside of the film tube and is accessible through the at least one associated opening, attaching the folded ends of the strip of material to the at least one foil strip, whereby the ends on the associated foil tape with non-positively the bag film are connected and the separation of a film bag from the web.
  • the individual process steps are particularly preferably carried out in the order indicated.
  • the bag film is first folded before the grip is attached to the folded to a film tube material web.
  • the material web preferably has side gussets extending in the longitudinal direction, which can be formed, for example, by appropriately positioned swords and forming shoulders.
  • the inventive method allows in particular at a high production throughput cost-effective production of the EP 1 712 482 A1 known foil bag.
  • a supply of strips of material is expediently provided on each side of the material web.
  • the method according to the invention may also be provided in principle to provide only a strip of material in the formation of a film bag or to attach the material strips before the formation of a film tube on the bag film as a material web.
  • the folded-over material strips for a foil bag are placed side by side on the material web, the bag foil subsequently being folded into a film tube so that the grip bands are arranged on the outside.
  • heat-sealing is generally understood to mean a local cohesive connection by pressure and / or temperature.
  • Next Conventional heated sealing jaws can also be used for other methods such as ultrasonic or high frequency welding.
  • the non-positive connection can also be formed by multiple sealing.
  • the ends of the strip of material may first be tacked by ultrasonic welding and then firmly joined by heat sealing jaws by single or multiple sealing.
  • the strip of material is preferably applied to the bag film as a grip strip in such a way that the ends connected to the bag film point in the transport direction, that is to say the feed direction of the bag film.
  • the middle section of the strip of material can unintentionally set up and jam in the further handling.
  • it can be provided to fix the material strip in addition to the non-positive connection at its ends, for example by hot-melt adhesive, to the bag film.
  • This additional fixation usually serves easy handling during production. For this purpose, in particular a selective bonding of the material strip with the bag film may be sufficient.
  • the additional connection should in particular ensure that the handles rest against the bag during processing and do not fold up. Therefore, the fixing points are at or near a central grip portion of the strips of material.
  • this additional fixation is not usually used to absorb the tensile forces acting in addition to the connection at the ends of the strip of material when using the foil bag.
  • the fixation is expediently rather such that it is released in a first use of the strip of material as a grip band.
  • hot-melt adhesive for example, an adhesive tape between the outside of the bag and the associated strip of material, an inside on the described additional fixation an additional recess arranged adhesive tape, a peelable seal against a arranged on a further punching foil sheet or a connection can be provided by a hot or a cold sealing varnish.
  • the preferably heat-sealable material strip can be formed, for example, from a polyolefin such as polyethylene or polypropylene.
  • a polyolefin such as polyethylene or polypropylene.
  • this may be formed by folding a film strip on itself, wherein the longitudinal edges of the film strip are preferably fixed by heat sealing.
  • the film strip can be folded so that the longitudinal edges are arranged laterally or centrally in the material strip formed.
  • it may also be provided to form the strips of material from a multilayer film.
  • a film may be provided which has sealable outer layers of polyolefin, for example polyethylene, and a core layer of polyamide.
  • a band-shaped material can be supplied to form the grip band, in which case individual strips of material are separated from the band-shaped material.
  • Fig. 1 shows a film bag 1 manufactured by the method according to the invention, which has two in each case folded into a U-shaped grip tape strip of material 2 with unfolded ends 2a and a middle portion 2b arranged therebetween.
  • a bag film 3 is supplied and provided by punching with openings 4, wherein the distance between each four adjacent openings 4 corresponds to the length of the bag film 3, which is provided for the formation of a film bag 1.
  • 3 foil tape 6 are placed on a first, heat-sealable side 5 of the bag film to cover the openings 4 and fixed by heat sealing.
  • an associated foil strip 6 is provided for each of the openings 4.
  • two of the openings 4 can be covered by a common sheet of foil 6.
  • the bag film 3 is formed with sword and shoulder to a gussets having web 7.
  • longitudinal sealing seams 8a, 8b are produced with sealing jaws.
  • one of the longitudinal sealing seams 8a is used to connect the longitudinal edges of the bag film 3, while the other longitudinal sealing seams 8b are provided for reinforcement.
  • the bag film 3 is formed by a composite film and has an inner first side 5 of a layer of a polyolefin, for example polyethylene (PE) and opposite an outer layer of polyethylene terephthalate (PET).
  • the PET layer is printed on the side facing its first layer 5 side.
  • one or more intermediate layers for example adhesion promoter layers and barrier layers, be arranged.
  • the window-like, approximately rectangular opening 4 is covered on the inside of the bag by the film sheet 6, which overlaps the opening 4 edge. In the overlapping region of the film sheet 6 is attached to the first side 5 of the bag film 3 with a continuous, self-contained sealing seam 9 surrounding the opening 4.
  • the side of the film pile 6, which bears against the first side 5 of the bag film 3, also consists of a polyolefin, for example polyethylene (PE), whereby a good sealability is ensured.
  • PE polyethylene
  • the film strip 6 may be formed in multiple layers and in particular a barrier layer, for example made of PET.
  • the strip of material may for example be formed of polyethylene and is sealed at its folded ends 2a along a continuous, self-contained sealed seam 9 on the foil strip 6.

Landscapes

  • Making Paper Articles (AREA)
  • Bag Frames (AREA)
EP09016162.1A 2009-01-10 2009-12-31 Verfahren zur Herstellung eines Folienbeutels Not-in-force EP2206600B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL09016162T PL2206600T3 (pl) 2009-01-10 2009-12-31 Sposób wytwarzania woreczka foliowego

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009004324A DE102009004324A1 (de) 2009-01-10 2009-01-10 Verfahren zur Herstellung eines Folienbeutels

Publications (3)

Publication Number Publication Date
EP2206600A2 EP2206600A2 (de) 2010-07-14
EP2206600A3 EP2206600A3 (de) 2012-05-16
EP2206600B1 true EP2206600B1 (de) 2013-05-15

Family

ID=42123049

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09016162.1A Not-in-force EP2206600B1 (de) 2009-01-10 2009-12-31 Verfahren zur Herstellung eines Folienbeutels

Country Status (4)

Country Link
EP (1) EP2206600B1 (pl)
JP (1) JP5633955B2 (pl)
DE (1) DE102009004324A1 (pl)
PL (1) PL2206600T3 (pl)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2060451A (en) * 1935-07-27 1936-11-10 Harford K Steen Method of making handled shopping bags
DE1532830B1 (de) * 1965-09-23 1970-09-03 Holweg Const Mec Verfahren und Maschine zum fortlaufenden Herstellen von Tragtaschen
BE755472A (fr) 1969-08-29 1971-02-01 Lehmacher Hans Sac ainsi que procede et dispositifs pour sa fabrication
DE2215675B2 (de) * 1972-03-30 1974-04-11 Hans 5216 Niederkassel Lehmacher Tragetasche aus thermoplastischer Kunststoffolie
JPH069888B2 (ja) * 1988-12-21 1994-02-09 スーパーバック株式会社 袋の製法
DE10137844B4 (de) * 2001-08-02 2010-02-25 Windmöller & Hölscher Kg Verfahren zur Herstellung von Schlaufengrifftragetaschen
JP3657929B2 (ja) * 2002-07-02 2005-06-08 株式会社タナカ産業 手提げ袋の提手
PL1712482T3 (pl) * 2006-07-01 2009-05-29 Nordenia Deutschland Halle Gmbh Torba foliowa

Also Published As

Publication number Publication date
EP2206600A2 (de) 2010-07-14
EP2206600A3 (de) 2012-05-16
JP2010159089A (ja) 2010-07-22
PL2206600T3 (pl) 2013-12-31
DE102009004324A1 (de) 2010-07-15
JP5633955B2 (ja) 2014-12-03

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