EP0739822A1 - Procédé et dispositif pour la fabrication de sachets d'échantillons et sachet d'échantillon obtenu - Google Patents

Procédé et dispositif pour la fabrication de sachets d'échantillons et sachet d'échantillon obtenu Download PDF

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Publication number
EP0739822A1
EP0739822A1 EP96105180A EP96105180A EP0739822A1 EP 0739822 A1 EP0739822 A1 EP 0739822A1 EP 96105180 A EP96105180 A EP 96105180A EP 96105180 A EP96105180 A EP 96105180A EP 0739822 A1 EP0739822 A1 EP 0739822A1
Authority
EP
European Patent Office
Prior art keywords
bags
sample
bag
seams
film webs
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
EP96105180A
Other languages
German (de)
English (en)
Other versions
EP0739822B1 (fr
Inventor
Jürg Vollenweider
Erich Jäger
Werner Heuberger
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.)
Ferag AG
Original Assignee
Ferag AG
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 Ferag AG filed Critical Ferag AG
Publication of EP0739822A1 publication Critical patent/EP0739822A1/fr
Application granted granted Critical
Publication of EP0739822B1 publication Critical patent/EP0739822B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • 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

Definitions

  • the invention lies in the field of packaging technology and relates to a method for producing sample bags according to the preamble of the first, independent patent claim and an apparatus for carrying out the method and sample bags produced according to the method.
  • the sample bags produced contain fluid or solid samples and are particularly suitable for automated further processing at high processing speeds, for example for attaching to or introducing them into printed products.
  • the greatest obstacle to process-oriented handling of the sample bags when they are introduced into printed products has been identified as the very unfavorable and in many cases unstable form of bars, i.e. the shape that changes during handling. It is therefore the aim of the invention to give the bags a stabilized and also as flat a shape as possible in a manufacturing process modified according to the prior art, which shape allows the bags to be handled as desired. By stabilizing the bag shape, a change in the bag shape by shifting the contents during manipulation is to be prevented as far as possible. Furthermore, a pillow-shaped bag shape with an essentially elliptical cross section should either be avoided or its influence on the rod formation should be limited by further shaping means.
  • the additional steps for shape stabilization are integrated into the bag manufacturing process in such a way that hardly any additional work is required.
  • the shape stabilization during bag manufacture means that there is no loss of speed.
  • a small additional effort may be necessary, based on the advantages achieved.
  • sample bags produced by the method according to the invention are isolated or can be handled much more easily on the strand than known sample bags, since they have a stabilized shape, that is to say that they only change insignificantly during handling and are as flat as possible. For this reason, they can be easily strung into bars with known means, individually gripped and further processed, in particular also at high processing speeds.
  • the flattened sample product which has been made as flat as possible, is no longer unnecessarily applied, so more sample products or sample bags perfected in this way can be introduced per print product than before.
  • FIG. 1 shows in a very schematic manner an installation for packaging sample products in bags, as is used according to the prior art.
  • the principle of how the packaging process essentially proceeds is known: From rolls 1, film webs 1 'with, for example, a heat-fusible coating via deflection rollers 3 into a system part 10 for receiving the sample product 2 become arrow direction z (indicates the process direction of the product) drawn.
  • the film webs are closed into bags by forming continuous longitudinal seams and equidistant transverse seams 6, the resulting bags each being filled with a solid object 2 between the creation of successive transverse seams 6, for example.
  • the bags 12, which emerge from the plant part 10 as a quasi-endless string of bags, are usually subsequently separated from one another in the region of the transverse seams 6.
  • the finished sample bags 12 are typically pillow-shaped.
  • Figures 2 and 2a illustrate a first, exemplary variant of the method according to the invention and the corresponding product.
  • this method variant as much additional air as possible is pressed out of the bag as an additional, shaping measure before the bag is closed (creation of the transverse seam 6 after filling).
  • Experiments on bags with a fresh wipe each, as an example of a solid sample product, have shown that squeezing the air out of the bag gives surprisingly good results for the specified goal.
  • FIG. 2 shows, in the same way as FIG. 1, a system for carrying out the aforementioned method variant (same reference numbers for parts already described).
  • the pressing is carried out step by step by means of soft pressing elements 5, for example polyurethane cushions, which can be moved back and forth essentially in the Z direction and which bring the bag into the desired shape by pressing out the superfluous gas residues.
  • the pressing elements 5 are, for example, as shown, a movable cushion and a corresponding counter support, or they are two cushions that move against each other for the pressing.
  • the pressing elements 5 are arranged in the same system part 10 as the welding head 4 for the creation of the sealing cross seam.
  • the finished, welded sample bags as shown in FIG. 2a, are flat, rigid in a sense, retain their shape and behave much more like a flat sample product when handled than the sample bag produced in the known manner (FIG. 1a), which is soft padded, pillow-like object.
  • the achieved with the inventive method Strength is exactly what was aimed at and in the subsequent processing of the bags with the printed products brings the handling options that are required for high processing speeds.
  • Figure 3 shows a plant part 10 based on Figure 2 for continuous shape stabilization of bags with a solid content by squeezing air.
  • the closure elements 20 for the longitudinal closure seam and the closure elements 4 for the transverse closure seam, as well as the pressing elements 5 for stabilizing the shape of the bags, are integrated in two rollers or form matrices, between which the receiving chamber for the sample product to be filled is formed by means of a longitudinal closure seam 6 ', between which the Squeezing of the excess gas takes place and between which the sealing cross seam 6 is finally applied.
  • the pressing elements 5 consist of a soft, pliable material which does not damage the sample product 2 in the bag during pressing.
  • the partially covered sample product is conveyed in the direction of arrow z, at the same time closed longitudinally, conditioned (shape-stabilized) and then closed by means of a transverse seam.
  • the transverse webs 4 (closure elements) running in the axial direction of the rollers serve for this purpose. It is left open here whether the closure is brought about by rib formation or by welding or in another way.
  • FIGS. 4, 4a and 4b in turn show a further variant of the method according to the invention and the corresponding product using a very schematically represented system.
  • the shape stabilization is achieved by creating adhesion points in the receiving chamber of the bags, at which adhesion points the two film webs 1 'adhere to one another or are connected to one another as in the seam regions.
  • the points of detention are introduced either by means of a cycle pressure or by means of a roller pressure.
  • the anchor or detention points formed. point or line-shaped, do not have to have the same resistance to cohesion as the entire sealing seam around the periphery of the bag or the sample product. Bags made in this way are "flat" in any position. Since small leaks between the chambers do not affect the desired properties of the bag, the subsequent handling is also not critical. Even a point-by-point fixation with a few adhesive points to "cushion-shaped" depressions prevents the bag from forming a cushion.
  • the attachment points are produced, for example, on the finished sample product, heat not being able to be used in every case, that is to say that the term welding also means the term closing by other connection methods.
  • the bag can also be filled with the fluid sample product by means of a retractable cannula after the films have been anchored.
  • FIG. 4 shows a system for producing the above-described bags with fluid content, which are stabilized by additional adhesive points. It is important to show that the stabilization measure is again implemented by pressing elements 5 ', which pressing elements for fluid and for solid contents (pressing elements 5 in FIG. 2) are very similar to one another. Depending on the connection method of the inner surface of the bag, the pressing elements for creating the adhesion points (with fluid contents) are additionally heated, for example, or can be subjected to ultrasound. Such a solution makes the use of known filling machines very useful. For this reason and also on purpose, FIGS. 2 and 4 (or 3 and 5) for solid and for fluid sample products in cyclical operation (or in continuous operation) are very similar. Essentially, the pressing element 5 or 5 'is varied in accordance with the stabilization measure: on the one hand it is a cushion for pressing out excess gas, on the other hand it is a molding die for creating the adhesion points.
  • the fluid sample product P is filled in the system according to FIG. 4 in the direction of gravity g.
  • Other, more location-independent methods of filling such as, for example, injection through retractable cannulas, can also be used.
  • FIGS. 4a and 4b show sample bags which can be produced in a system according to FIG. 4 and which are therefore dimensionally stabilized by adhesive points between the two film blanks.
  • the bag according to FIG. 4a has, for example, four punctiform adhesive spots 6 ′′, which give the bag the more or less flat shape by creating a defined distance between the film webs forming the receiving chamber through these adhesive spots 6 ′′.
  • FIG. 4b shows a bag, the fluid content of which is distributed by two line-shaped adhesion points 6 ′′ in parallel chambers which open laterally into a common space. The line-shaped adhesive points 6 ′′ run parallel to the sealing cross seam 6.
  • Sample bags according to FIG. 4b in which the line-shaped adhesive points 6 ′′ run parallel to the longitudinal seams 6 ′, can be produced with press elements as shown in FIGS. 2 and 3, which press elements are to be adapted in terms of shape and function accordingly.
  • FIG. 5 shows a plant part 10 for the continuous conditioning of bags with fluid content by creating detention points.
  • the closure elements 20 for the longitudinal closure seam and the closure elements 4 for the transverse closure seam, as well as the pressing elements 5 for the shape stabilization or chamber formation of the bags are integrated in two rollers or form dies. between which the receiving chamber for the sample product to be filled is formed by means of a longitudinal sealing seam.
  • the pressing elements 5 are designed such that either seam-like adhesion points 6 ′′ (FIG. 4b) or point-like adhesion points 6 ′′ (FIG. 4a) are created.
  • the pressing elements 5 for conditioning consist of chambers K, into which the bag to be conditioned can spread, and of a means M with which the anchor or adhesive points are formed.
  • the partially encased sample product is conveyed in the direction of arrow z, at the same time closed longitudinally, conditioned and then closed by means of a transverse seam.
  • the transverse webs 4 running in the axial direction of the rollers serve this purpose. It is also left open here whether the closure and the adhesion points are caused by ribs or by welding or brought about in some other way.
  • the fluid sample product P is filled in, for example, in the direction of gravity g, as is also shown in FIG. 3.
  • the fluid sample product can be injected by means of retractable cannulas simultaneously with the formation of the anchor points or traps.
  • FIGS. 6 and 6a show a further, exemplary variant of the method according to the invention and the corresponding product.
  • the sample bags are reshaped after being closed, if they still form a quasi-endless bag strand, by rolling or folding and pressing the longitudinal edges of this bag strand.
  • FIG. 6 again shows a very schematically illustrated plant part, which has a pair of rollers 30 (for example analogous to the roller pairs of FIGS. 3 and 5 but without pressing elements 5 or 5 ') for producing the longitudinal seams 6' and the transverse seams 6.
  • the longitudinal seams 6 ' are not laid out to the extreme on the film edges but at a distance from them or have a correspondingly increased width.
  • the longitudinal edges are rolled or folded in there by corresponding guide elements (not shown) and then pressed in such a position, for example by a further pair of rollers 31. welded if necessary and thereby stabilized in this position.
  • the rolled-up or folded-in longitudinal edges 32 of the bag strand can also be stabilized in another way, for example by appropriately introducing an adhesive before rolling in and by pressing after rolling in.
  • FIG. 6a shows a sample bag produced in the system according to FIG. 6 in a section parallel to the transverse seams 6.
  • the FIGURE shows further, identical sample bags with dash-dotted lines as they are arranged in a stack. From this it can be seen that the resulting from the curling or folding by pressing, welding and / or gluing, stabilized longitudinal edge regions 32 of the sample bag act as support webs, by means of which the shape effect of the still substantially pillow-shaped central region of the bag is canceled. Furthermore, the edge regions 32 also have a shape-stabilizing effect due to their increased rigidity.
  • FIGS. 7 and 7a to 7c show a further, exemplary variant of the method according to the invention, which variant in turn has an additional, shaping method step compared to the manufacturing method according to the prior art.
  • a roof ridge-shaped fold 70 i.e. three fold lines each with an alternating folding direction, is made on one (1 '') of the film webs (FIG. 7a) before the longitudinal seams 6 'are produced parallel to the longitudinal edges of the film web with a corresponding folding tool (not shown) manufactured.
  • the film web 1 ′′ with the folds 70 is then continued in such a way that the folds are given the desired height by correspondingly reducing the film width (FIG. 7b).
  • the film web 1 ′′ is brought together with the other film web 1 ′ and 70 double seams (represented by two dash-dotted lines) are created as longitudinal seams on both sides of the folds. Then the bags are filled and the transverse seams 6 are created.
  • FIG. 7c A section parallel to the transverse seams through a finished sample bag is shown in FIG. 7c. It is obvious that the folds 70 fixed by the double longitudinal seams 6 'perform the same function as the edge regions of the bags thickened by rolling or folding according to FIG. 6a. A possibly significant difference from the embodiment according to FIG. 6a, however, is that the folds 70 after the manipulation, which make them easier as a form-stabilizing agent or only make them possible, can be easily compressed again and then only have a very small thickening effect. In other words, that means according to sample bags Figure 7c can be introduced easily and safely even at high processing speeds, for example in printed products. The folds 70 can be flattened just as easily when they are fixed in or on the printed product or later by pressing, as a result of which the bag in the printed product is certainly only applied to a minimum.
  • Variants of the method according to FIGS. 7 and 7a to 7c can consist in that one or two folds are created on each of the two film webs and in that the folds are not shaped like a roof ridge (have a triangular cross-section) but, for example, a circular segment-shaped or a trapezoidal cross-section exhibit.
  • the starting width of the two film webs can be of the same size or matched to one another such that the long edges of the two webs lie on one another in the finished bag.
  • FIGS. 8 and 8a show a further, exemplary variant of the method according to the invention and the product produced with it.
  • the bags produced according to this process variant are stabilized by an additional shaped element.
  • the shaped elements are frames 33, which are introduced as quasi-endless frame webs 33 'between the film webs 1' and 1 '', are connected to the film webs when the longitudinal and transverse seams are created, and are separated from one another together with the bags.
  • the frames 33 are made, for example, of plastic (solid or foamed) and are, for example, 0.5 to 1 mm thick.
  • FIG. 7a shows a sample bag with frame 33 in section parallel to the transverse seams. The figure also shows the peelable film area 34 in the closed and in the open (34 ') position.
  • FIG. 9 illustrates a further exemplary process variant of the process according to the invention and the product produced with it.
  • the starting products are in turn two film webs 1 'and a frame web 33', the frame web not being fed between the film webs but next to them, as in the method according to FIG. 8.
  • the frames 33 can have gaps 35 at one corner, for example.
  • the film webs 1 'of the sample bags are provided with tear-in notches at the corresponding points, for example during the separation process.
  • the film web 1 'facing away from the frame web 33' can be selected somewhat wider and a peelable connection can be made with the other film web, so that an opening analogous to the opening of the sample bag according to FIG. 8a is made possible.
  • FIG. 10 illustrates a further, exemplary variant of the method according to the invention and the product produced with it.
  • two strips 40 are introduced into the process as additional shaped elements, which strips are connected, for example welded or glued, to one of the film webs 1 'or to the bag strand in the region of the longitudinal seams.
  • a direct extrusion of one suitable plastic on one of the film webs 1 'or on the bag strand for producing the strips 40 is conceivable.
  • the strips 40 can also be introduced analogously to the method described in connection with FIGS. 8 and 8a before the seams are made between the two film webs 1 '.
  • the strips 40 can be adapted in wide limits with regard to material and material structure and with respect to cross section to the film webs used, to the content of the bags and / or to production parameters. Strips of cardboard, paper or plastic (solid or foamed) with any hollow or compact cross sections are conceivable.
  • FIGS. 11 and 12 illustrate exemplary process variants and corresponding products in which the shape stabilization is achieved by at least one individual shaped element for each bag.
  • Such shaped elements are, for example, rings 41 introduced between the film webs 1 'and 1 "or support points 42 attached to the outside of the bag in the area of the bag corners.
  • the shaped elements are, for example, welded onto one of the film webs 1" before the longitudinal and transverse seams are created, Glue or similar connection methods applied.
  • the rings 41 as shaped elements can have gaps 43 for opening the bags, for example.
EP96105180A 1995-04-24 1996-04-01 Procédé et dispositif pour la fabrication de sachets d'échantillons et sachet d'échantillon obtenu Expired - Lifetime EP0739822B1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
CH116795 1995-04-24
CH116795 1995-04-24
CH1167/95 1995-04-24
CH216/96 1996-01-29
CH21696 1996-01-29
CH21696 1996-01-29

Publications (2)

Publication Number Publication Date
EP0739822A1 true EP0739822A1 (fr) 1996-10-30
EP0739822B1 EP0739822B1 (fr) 2001-07-04

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EP96105180A Expired - Lifetime EP0739822B1 (fr) 1995-04-24 1996-04-01 Procédé et dispositif pour la fabrication de sachets d'échantillons et sachet d'échantillon obtenu

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US (1) US5735107A (fr)
EP (1) EP0739822B1 (fr)
CA (1) CA2173930A1 (fr)
DE (1) DE59607200D1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11292020A (ja) * 1998-04-08 1999-10-26 Yamagata Gravure:Kk 商品包装体の製造方法
EP1099632A1 (fr) 1999-09-16 2001-05-16 Ferag AG Procédé et dispositif pour alimenter des articles plats vers leur séparation individuelle

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1307397B1 (it) * 1999-10-05 2001-11-06 Giorgio Trani Contenitore a busta con facce realizzate con materiali di consistenzae/o di caratteristiche diverse e procedimento per la sua realizzazione
US6732498B2 (en) * 2001-06-29 2004-05-11 Mars, Incorporated Vacuum assisted cut-and-seal apparatus with transfer wheel
FR2848534B1 (fr) * 2002-12-11 2005-07-08 Valois Sas Ensemble de distribution de produit fluide
US7013621B2 (en) * 2003-06-18 2006-03-21 Shanklin Corporation Adjustable package geometry web forming apparatus and method
US20050005569A1 (en) * 2003-07-09 2005-01-13 Tigchelaar Mark A. Unidirectional fiber reinforced sheets in a thermoplastic matrix
ITMI20040490U1 (it) * 2004-11-03 2005-02-03 Ilapak Res & Dev Sa Imbustamento antimanomissione per tessere

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DE1123612B (de) * 1957-06-22 1962-02-08 Vera Delnon Geb Kasalova Vorrichtung zum Verpacken von Waren in allseitig geschlossenen, luftdichten Beuteln
DE1271012B (de) * 1964-11-27 1968-06-20 Sig Schweiz Industrieges Vorrichtung zum Herstellen gefuellter und verschlossener Flachbeutel
US3471990A (en) * 1967-01-03 1969-10-14 Johnson Co Gordon Apparatus for and method of stretching,sealing and removing the tab from packages
DE2449570A1 (de) * 1974-10-18 1976-04-22 Josef Thaller Geraet zum vakuumverpacken
GB2124580A (en) * 1982-08-04 1984-02-22 Reginald David Wilson Press for compressing textile and other articles for packaging
WO1986003163A1 (fr) * 1984-11-20 1986-06-05 Wilhelm Heisig Procede et dispositif pour la fabrication de coussins-sachets en feuille ainsi que coussin-sachet obtenu
WO1986005163A1 (fr) * 1985-02-28 1986-09-12 Societe Generale Des Eaux Minerales De Vittel Sachet en matiere synthetique souple comportant un moyen de rigidification et de stabilisation

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US2673495A (en) * 1946-03-13 1954-03-30 Continental Can Co Method and apparatus for making bags
US2737339A (en) * 1951-10-02 1956-03-06 Arkell Safety Bag Co Multiply bags
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US4324088A (en) * 1978-12-22 1982-04-13 Tokyo Shibaura Denki Kabushiki Kaisha Refuse storage apparatus with sealer for sealing pliable bag top
DE3837709A1 (de) * 1988-11-07 1990-05-10 Rovema Gmbh Schlauchbeutelmaschine
SE466306B (sv) * 1990-06-06 1992-01-27 Tetra Pak Holdings Sa Formningsdon vid foerpackningsmaskin foer flexibelt foerpackningsmaterial
AU639855B2 (en) * 1991-06-11 1993-08-05 Orihiro Co., Ltd. Vertical type forming, filling and closing machine for flexible package

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1123612B (de) * 1957-06-22 1962-02-08 Vera Delnon Geb Kasalova Vorrichtung zum Verpacken von Waren in allseitig geschlossenen, luftdichten Beuteln
DE1271012B (de) * 1964-11-27 1968-06-20 Sig Schweiz Industrieges Vorrichtung zum Herstellen gefuellter und verschlossener Flachbeutel
US3471990A (en) * 1967-01-03 1969-10-14 Johnson Co Gordon Apparatus for and method of stretching,sealing and removing the tab from packages
DE2449570A1 (de) * 1974-10-18 1976-04-22 Josef Thaller Geraet zum vakuumverpacken
GB2124580A (en) * 1982-08-04 1984-02-22 Reginald David Wilson Press for compressing textile and other articles for packaging
WO1986003163A1 (fr) * 1984-11-20 1986-06-05 Wilhelm Heisig Procede et dispositif pour la fabrication de coussins-sachets en feuille ainsi que coussin-sachet obtenu
WO1986005163A1 (fr) * 1985-02-28 1986-09-12 Societe Generale Des Eaux Minerales De Vittel Sachet en matiere synthetique souple comportant un moyen de rigidification et de stabilisation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11292020A (ja) * 1998-04-08 1999-10-26 Yamagata Gravure:Kk 商品包装体の製造方法
EP1099632A1 (fr) 1999-09-16 2001-05-16 Ferag AG Procédé et dispositif pour alimenter des articles plats vers leur séparation individuelle

Also Published As

Publication number Publication date
DE59607200D1 (de) 2001-08-09
EP0739822B1 (fr) 2001-07-04
US5735107A (en) 1998-04-07
CA2173930A1 (fr) 1996-10-25

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