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WO2007068298A1 - Procede et dispositif de fabrication de poches en feuille - Google Patents

Procede et dispositif de fabrication de poches en feuille Download PDF

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Publication number
WO2007068298A1
WO2007068298A1 PCT/EP2006/008765 EP2006008765W WO2007068298A1 WO 2007068298 A1 WO2007068298 A1 WO 2007068298A1 EP 2006008765 W EP2006008765 W EP 2006008765W WO 2007068298 A1 WO2007068298 A1 WO 2007068298A1
Authority
WO
WIPO (PCT)
Prior art keywords
film
cavities
mold
molding
plan
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.)
Ceased
Application number
PCT/EP2006/008765
Other languages
German (de)
English (en)
Inventor
Thomas Holderbaum
Bernd Richter
Hubert Harth
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.)
Henkel AG and Co KGaA
Original Assignee
Henkel AG and Co KGaA
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 Henkel AG and Co KGaA filed Critical Henkel AG and Co KGaA
Publication of WO2007068298A1 publication Critical patent/WO2007068298A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/02—Enclosing successive articles, or quantities of material between opposed webs
    • B65B9/04—Enclosing successive articles, or quantities of material between opposed webs one or both webs being formed with pockets for the reception of the articles, or of the quantities of material

Definitions

  • the subject matter of the present application is a packaging method and a molding tool for carrying out this method as well as film pockets produced by the method according to the invention.
  • this application discloses a method for packaging of products in particular made with water-soluble materials film bags.
  • the method described is suitable, for example, for the packaging of fillers from the group of pharmaceuticals, personal care products, agricultural auxiliaries, building materials, dyes, laundry detergents, dishwashing detergents, adhesives or foodstuffs.
  • Film-wrapped, portioned and pre-dosed products or mixtures of substances are very popular with consumers due to their easy and safe handling. This is due, in particular, to the fact that the contents packed in the film bags do not come into physical contact with the consumer during use and incorrect dosages can be avoided.
  • Deep drawing is a stretch drawing process from the tensile forming group and is often referred to as thermoforming.
  • EP-A1-1, 161, 587 a method for producing a water-soluble packaging, by means of a deep-drawing process.
  • thermoforming thermoplastic films are heated by supplying heat until they reach a thermoelastic state in which they can be formed by pressure on a mold.
  • a mold consists of at least one molding area, which is a downwardly open or completely or closed cavity, which essentially dictates the final spatial shape of the film pocket and enables the reproducible production of defined spatial shapes.
  • the lattice-like arrangement of a majority of these cavities in a matrix is customary.
  • the film can be pre-stretched mechanically or pneumatically after reaching the thermoelastic state.
  • the pressure on the film to be formed can be done for example by the action of a stamp, by the action of compressed air and / or by the action of a negative pressure.
  • the pressure action can be carried out by two parts of a tool, which behave as positive and negative to each other and deform a spent between these tools film when squeezed.
  • the self-weight of a product placed on top of the film is also suitable as a compressive force.
  • a first film sheet the so-called lower film
  • a molding tool having at least one cavity and is preferably heated until a thermoelastic state is reached.
  • the film is formed in the cavity of the mold, for example by applying a vacuum.
  • these process steps are applied in parallel to a large number of the cavities of a matrix. Subsequently, contents can be introduced into the formed foil bag.
  • a second film sheet the so-called top film
  • a second film sheet is placed over the first molded film sheet and bonded to the webs of the mold by sealing, ie adherent, to the bottom film, so that a product in a film pocket formed in this way is completely enveloped by film.
  • thermoforming processes In all conventional thermoforming processes this results in a significant amount of waste film, which must be recycled or disposed of costly.
  • water-soluble film pockets and thus the corresponding cavities of the molds have comparatively simple geometries.
  • these are rectangular, square or circular base surfaces, with the corresponding shaping regions being arranged in the matrix like a grid.
  • the blend however, especially in circular bases is high. Even with square or rectangular basic shapes, the blend can be up to 50%.
  • the currently used water-soluble films are relatively expensive, so that the waste is a substantial part of the packaging costs for pre-portioned with contents film bags.
  • film pouches with increasing geometrical complexity have a lower bulk density, which is a problem, in particular when packaging the pouches in sales containers, in that these containers must be dimensioned significantly larger in comparison to pouches with simpler geometries.
  • Another object of the invention is to produce geometrically different, preferably geometrically complex, film pockets in one process step.
  • the method according to the invention allows a significant reduction of the crop even with geometrically complex bag pocket geometries.
  • the production speed for complex-shaped film pockets can be significantly increased because a separation of the sealed film pockets from each other with a continuous cutting line without discontinuation of the cutting tool is possible, with a cut line at least a portion of the edge of a foil pocket on the left of the cutting line and at least a partial circumference Butt edge of a foil bag on the right of the cutting line are separated from each other.
  • the inventive method allows in particular the economical production of geometrically complex film pockets that can be like a puzzle paste into each other.
  • extremely peculiar and distinctive designed foil bags with characteristic unique features can be realized for a particular product.
  • the film pockets according to the invention by the puzzle-like joining the possibility to save space and in a new, visually attractive way to be arranged in a package.
  • packaging volumes can also be reduced when using complex geometries of the film bags, so that the film bags do not have to be packed in large containers that are unattractive to the consumer. Of course, thus also transport space and storage space can be saved.
  • a particular advantage of the interconnected according to a preferred embodiment of the invention geometrically different pockets is that, for example, two different active substances can be stored spatially separated from each other and are mixed only when dissolving the water-soluble film. This is particularly advantageous when using two mixtures of substances, which are usually incompatible with one another, such as, for example, bleaching and enzymes.
  • Figure 1a film pocket in cross section and a plan view
  • Figure 1 b film bag with two cavities in cross section
  • Figure 1c Sealed foil bag with two cavities in cross section
  • Figure 1d film pocket with a folded cavity in cross section
  • Figure 3 Flow chart for the arrangement of geometrically identical cavities on the mold Figure 4: Flow chart for the arrangement of geometrically different from each other
  • Figure 5a basic body with manipulation point in the supervision
  • Figure 5b Arrangement of four basic bodies with manipulation points in the
  • Figure 5d Arrangement of four basic bodies with manipulation points in the
  • Figure 5e Arrangement of four basic bodies with shifted
  • FIG. 6 Flowchart for generating cavity geometries
  • FIG. 7 Packaging unit with foil pockets
  • FIG. 8 Arrangement of two geometrically different ones
  • FIG. 1 a shows a film pocket (1) produced by the method according to the invention.
  • the film bag (1) has a cavity (4), which is formed from a first, in particular water-soluble film (3) wherein a second, in particular water-soluble film (2) completely closes the opening of the cavities (4).
  • the cavity is usually cup-shaped, but can also take any other suitable form.
  • the volume of the cavities formed is preferably between 1 and 100 ml, preferably between 2 and 80 ml, more preferably between 3 and 60 ml and in particular between 4 and 40 ml.
  • the foil bag is completely enclosed by a sealing area (8, 7).
  • the sealing range is usually between 1-10 mm.
  • the base surface of the film pocket (1) is designed such that a plurality of film pockets (1) can be put together in a mosaic or parquet manner.
  • the base area of a film bag is understood to mean the projection surface of the film bag from the top view onto the film bag.
  • the film pouches (1) can be arranged in a puzzle-like manner to one another.
  • the term "puzzle-like” means that a plurality of foil pouches can be connected to each other essentially in a form-fitting manner.
  • the geometry of the base surface extends substantially consistently over the entire height of the film pocket or is formed only partially over the height of the film pocket.
  • the film pocket has a portion which substantially corresponds to the geometry of the base area and extends from the opening of a cavity (4) to the bottom of the cavity (4).
  • Figure 1 b and 1c show a particularly preferred embodiment of the invention.
  • the film pocket (1) is formed with a plurality of cavities (4,5).
  • the cavities are formed from a first, in particular water-soluble film (3) wherein a second, in particular water-soluble film (2), the openings of the cavities (4,5) completely closes.
  • the cavities (4, 5) are connected to one another via a web (6).
  • the cavities (4, 5) may have geometrically identical base surfaces, in a particularly preferred embodiment the base surfaces may also be geometrically different from each other.
  • the base surfaces of the cavities (4, 5) of such a film pocket (1) are designed in such a way that a plurality of such film pockets (1) can be placed in puzzle, parquet or mosaic fashion.
  • the cavities (4, 5) can be filled with the same or different substances or substance mixtures.
  • geometrically identical or different cavities with their end faces (2) can be fixed to one another. This can be achieved, for example, by folding down a film pocket along a web (6) and subsequently bonding the end faces (2) together.
  • the fixation can also be formed by embossing, sealing or welding.
  • the dissolution kinetics and thus the release of the filling can be controlled. It is possible that the top film and the bottom film consist of materials with different or equal release kinetics.
  • Preferred film materials are the polymers known from the prior art. Particular preference is given to films of a polymer having a molecular weight of between 5000 and 500,000 daltons, preferably between 7,500 and 250,000 daltons, and in particular between 10,000 and 100,000 daltons. With regard to the media in which, for example, washing and cleaning agents are usually incorporated In particular, portions according to the invention are preferred in which the film consists of a water-soluble polymer.
  • Such preferred polymers may be of synthetic or natural origin. If polymers are used on a native or partnative basis as film material, preferred film materials are selected from one or more substances from the group of carrageenan, guar, pectin, xanthan, cellulose and its derivatives, starch and its derivatives, and gelatin.
  • polymers which can be used as film materials are synthetic polymers which are preferably water-swellable and / or water-soluble. Such synthetic-based polymers can be "tailored" for the desired film permeability upon storage and dissolution of the film in use.
  • Water-soluble polymers in the context of the invention are those polymers which are soluble in water at room temperature in excess of 2.5% by weight.
  • the films may be made of any of the above-mentioned polymers, but it can also be used mixtures or multilayered layer structures of the polymers.
  • FIG. 2 shows the molding tool according to the invention for producing film pockets.
  • the molding tool (11) consists of a substantially rectangular frame which has on two opposite sides guide portions (13) which serve to transport the mold (11) by a corresponding manufacturing device.
  • a plurality of cavities (12) are arranged substantially periodically.
  • the cavities (12) are completely enclosed by webs (14,15).
  • the cavity (12) enclosed by the webs (14, 15) thus forms a closed circumferential line.
  • one of the webs (14,15) enclosed cavity (12) forms a circumferential line, the Has at least one turning point, more preferably a plurality of turning points.
  • one of the webs (14,15) enclosed cavity (12) forms a circumferential line, which has at least one undercut, more preferably a plurality of undercuts.
  • the cavities (12) arranged in the mold (1) have a pattern that is periodic in at least two directions.
  • the molding tool (11) may comprise a plurality of cavities (12), the circumferential lines of which are geometrically substantially identical.
  • the division of the surface of the molding tool (11) by the geometrically substantially identical cavities (12) takes place essentially by translation, mirroring, sliding mirroring and / or rotation.
  • the circumferential line of a cavity (12) is to be selected such that a non-overlapping and gapless arrangement of a plurality of identical cavities (12) on the surface of the molding tool is made possible.
  • gapless means that the distance of the circumferential lines of adjacent cavities (12) has a substantially constant value.
  • the distance of the circumferential lines of adjacent cavities (12), which corresponds to the width of the webs (14,15) is according to a preferred embodiment of the invention between 2-10 mm.
  • the web width is 4-6 mm.
  • a detailed representation of the arrangement of geometrically identical cavities in the mold is given with reference to Figure 3 at a later point.
  • the molding tool (11) has a plurality of cavities (12) which comprises at least two geometrically different circumferential lines.
  • the division of the matrix surface by the geometrically different cavities (12) is carried out by translation, mirroring, Gleitadorung and / or rotation of each group of geometrically identical cavities.
  • the circumferential line of a group of cavities (12) which are geometrically identical to one another is to be selected such that an overlapping-free and gapless arrangement of a plurality of identical cavities (12) together with at least one further group of geometrically identical cavities on the surface of the molding tool (11) is possible becomes.
  • gapless means that the distance of the circumferential lines of adjacent cavities (12) has a substantially constant value.
  • the distance of the circumferential lines of adjacent cavities (12), which corresponds to the width of the webs (14,15) is according to a preferred embodiment of the invention between 2-10 mm. According to a particularly preferred embodiment of the invention, the web width is 4-6 mm.
  • the relative web width defined as the ratio of land area to total area of the molding tool (11) minus the guide sections (3), is less than 0.5 in the plan view.
  • the cavities (12) are designed such that they can preferably form film chambers between 1 and 100 ml, preferably between 2 and 80 ml, particularly preferably between 3 and 60 ml and in particular between 4 and 40 ml.
  • the mold (11) are in particular corrosion-resistant materials, in particular materials from the group of Metals or polymers.
  • the webs (14,15) can also be made of composite materials.
  • molding tools (11) are used with a surface coating.
  • Such a coating preferably comprises deformable materials such as rubber, silicones or cork.
  • the openings of the mold are preferably rounded. Sharp corners or edges are preferably avoided. Both the coating and the rounding of the openings of the mold (11) serve to prevent damage to the water-soluble film in the course of the molding process.
  • FIG. 3 shows the method for arranging geometrically identical cavities in the mold (11) in the form of a flow chart.
  • the cavities and the molding tool (11) may be represented in a preferred embodiment of the invention by virtual objects representing the cavities and the molding tool (11).
  • the virtual objects may be part of a graphic computer program product for carrying out the described method for arranging cavities in a mold.
  • a suitable geometry of the circumferential line of a cavity is selected.
  • the method for selecting a suitable geometry of a cavity will be explained later with reference to FIG.
  • This first area corresponding to a cavity is positioned in a second process step (102) on a surface corresponding to the mold.
  • a second process step (102) on a surface corresponding to the mold.
  • an additional cavity surface identical to the first cavity surface is now arranged without overlapping on the mold surface. This means that no surface sections of two Kavticians vom overlap.
  • the added cavity area is now passed through the process loop (104), (105), (106) by translations, rotations, reflections, and glide reflections over the Mold surface moves until the distance of all arranged on the mold cavity surfaces have a constant distance from each other.
  • FIG. 4 shows the method sequence according to the invention for the arrangement of geometrically different cavities in a molding tool (11).
  • the method sequence according to FIG. 4 includes a loop (209, 211, 212) which increases the number of different geometries to be arranged on the surface of the molding tool (11) until a termination criterion (211) is selected.
  • one of the existing cavity geometries is first selected (212). This is then fulfilled in the loop (203), (204), (205), (206) until the abort criterion (204) or the abort criterion (205) is fulfilled.
  • FIGS. 5a-e disclose a method for producing identical surface geometries for the overlap-free arrangement of a plurality of cavities whose circumferential lines are at a constant distance from each other.
  • FIG. 5a shows a square basic body (301).
  • the base body (301) can also have any other shape that allows a plurality of identical base bodies to be arranged without gaps and without overlapping.
  • the base body (301) On the base body (301) is located at an arbitrary position on the circumference of the base body (301) has a manipulation point (302).
  • a manipulation point (302) In the following, at least four base bodies (301) are arranged without gaps and without overlapping one another according to FIG. 6b.
  • the selected manipulation point (302) is arranged at all Grundkörpem to the same selected position on the circumferential line.
  • the manipulated basic body (301) now has two corner points (303, 304) closest to a manipulation point (302) on the circumferential line, wherein the circumferential line runs through the corner points (303, 304) and through the manipulation point (302) as support points.
  • the course of the circumferential line between a vertex (304, 305) and the manipulation point (302) may be substantially rectilinear or, as shown in FIG. 5e, may have a curved course.
  • a manipulation point (307) can be arranged at a further arbitrary position on the circumference of the base body (301), the circumferential lines of all corresponding base bodies (301) being respectively displaced by the manipulation point (30). 302) on the corresponding circumferential line nearest corner points (305, 306) and the manipulation point (307) runs as a support points.
  • FIGS. 5a-e The procedure illustrated in FIGS. 5a-e enables the design of geometrically complex cavities for the production of film pockets with minimal waste.
  • the molding tool according to the invention is used in particular in processes for producing film bags.
  • the film material is formed by the action of a negative pressure in the cavity of a molding tool.
  • the deep-drawn sheet material is preferably fixed after deep drawing by using a negative pressure in their achieved by the deep-drawing process spatial form.
  • To generate the required negative pressure are all known to those skilled in the art for these purposes pumps, in particular the usable for a rough vacuum water jet, remplisstechniksdampfstrahl-, Wasserring- u. Piston pumps. But can also be used, for example, rotary vane, Sperrschieber-, Trochoiden- and sorption pumps and so-called Roots blower and cryopumps.
  • diffusion pumps, Roots blower, positive displacement, turbomolecular, sorption, lonengetter- pumps are suitable.
  • FIG. 7 shows a packaging unit (501) consisting of side walls (503, 502, 507, 508) and a bottom (504) which define a storage space (506) for accommodating products, in particular film bags according to the invention.
  • the packaging unit (501) has a cover (505) which closes the storage space and is preferably arranged such that it can be articulated on a side wall (503, 502, 507, 508).
  • the film pockets according to the invention are arranged in the storage space (506) of the packaging unit (501) in such a way that they can be positioned next to one another without overlapping and substantially without gap, whereby the pattern formed in the plan view is periodic at least in two different directions.
  • the packaging unit (501) may be wholly or partly made of paper, cardboard, plastic, metal, glass or ceramic.
  • FIG. 8 shows a further advantageous embodiment of the invention in which a plurality of substantially pocket-shaped film pockets (602) are arranged in a mosaic pattern, wherein in the formed, substantially square gaps between the octagonal film pockets (602), square Foil pockets (601) are arranged flush.
  • any other embodiment of the film pockets are also conceivable, which allows to arrange two geometrically different film pockets, mosaic-like and substantially flush.
  • the film pockets (601, 601) are provided with product or film of different colors.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)

Abstract

L'invention concerne un outil de formage (11) destiné en particulier à fabriquer des poches (1) en feuille par thermoformage, et qui comprend plusieurs cavités (12) qui sont fermées par des entretoises (14, 15) et qui, lorsque l'on observe l'outil de formage (11) dans une vue en plan, délimitent par une périphérie (16) des parties de formage qui définissent essentiellement la forme des poches (1) en feuille fabriquées par l'outil de formage (11). Les zones de formage des cavités (12) sont disposées sans superposition sur l'outil de formage (11) de telle sorte que les zones de formage soient mutuellement congruentes et que lorsque l'outil de formage (11) est observé dans une vue en plan, le motif formé par les zones de formage soit périodique dans au moins deux directions différentes, le rapport entre la surface des entretoises et la surface totale de l'outil de formage vu en plan étant inférieur à 0,5.
PCT/EP2006/008765 2005-12-14 2006-09-08 Procede et dispositif de fabrication de poches en feuille Ceased WO2007068298A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005060179.0 2005-12-14
DE200510060179 DE102005060179A1 (de) 2005-12-14 2005-12-14 Verfahren und Vorrichtung zur Herstellung von Folientaschen

Publications (1)

Publication Number Publication Date
WO2007068298A1 true WO2007068298A1 (fr) 2007-06-21

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/008765 Ceased WO2007068298A1 (fr) 2005-12-14 2006-09-08 Procede et dispositif de fabrication de poches en feuille

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DE (1) DE102005060179A1 (fr)
WO (1) WO2007068298A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0188832A2 (fr) * 1984-11-28 1986-07-30 The Procter & Gamble Company Procédé et dispositif pour fabriquer des sachets poreux contenant un produit granulaire
WO2000055415A1 (fr) * 1999-03-17 2000-09-21 Unilever Plc Processus de production d'emballages solubles dans l'eau
WO2004020288A1 (fr) * 2002-08-30 2004-03-11 Packaging Imolese S.P.A. Procede de fabrication de conteneurs solubles dans l'eau par thermoformage

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8108984U1 (de) * 1981-03-27 1981-08-20 Rinn & Cloos AG Zigarrenfabriken, 6301 Heuchelheim Verkaufseinheit fuer zigarren o.dgl.
US5623810A (en) * 1996-03-29 1997-04-29 Ethicon, Inc. Method for making sterile suture packages
DE19706797A1 (de) * 1997-02-20 1998-08-27 Kourtoglou Sa Verfahren zur Herstellung von Verpackungsbehältern aus Kunststoff sowie Formstation für einen Kunststoff-Verpackungsbehälter, Verpackungsmaschine und Kunststoff-Verpackungsbehälter, insbesondere hergestellt nach dem vorgenannten Verfahren, sowie Verfahren zur Herstellung befüllter und verschlossener Verpackungsbehälter
DE20101650U1 (de) * 2001-01-30 2001-04-05 JUMA Fleisch- und Wurstwaren GmbH, 94333 Geiselhöring Snack mit portionierten Back- und Wurstwaren

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0188832A2 (fr) * 1984-11-28 1986-07-30 The Procter & Gamble Company Procédé et dispositif pour fabriquer des sachets poreux contenant un produit granulaire
WO2000055415A1 (fr) * 1999-03-17 2000-09-21 Unilever Plc Processus de production d'emballages solubles dans l'eau
WO2004020288A1 (fr) * 2002-08-30 2004-03-11 Packaging Imolese S.P.A. Procede de fabrication de conteneurs solubles dans l'eau par thermoformage

Also Published As

Publication number Publication date
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