EP0515896B1 - Poche - Google Patents

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Publication number
EP0515896B1
EP0515896B1 EP92107971A EP92107971A EP0515896B1 EP 0515896 B1 EP0515896 B1 EP 0515896B1 EP 92107971 A EP92107971 A EP 92107971A EP 92107971 A EP92107971 A EP 92107971A EP 0515896 B1 EP0515896 B1 EP 0515896B1
Authority
EP
European Patent Office
Prior art keywords
channel
tube
bag
pouring
bag according
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.)
Expired - Lifetime
Application number
EP92107971A
Other languages
German (de)
English (en)
Other versions
EP0515896A1 (fr
Inventor
Rudolf Aeschbach
Martin Wiesmann
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.)
Cellpack AG
Original Assignee
Cellpack 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 Cellpack AG filed Critical Cellpack AG
Publication of EP0515896A1 publication Critical patent/EP0515896A1/fr
Application granted granted Critical
Publication of EP0515896B1 publication Critical patent/EP0515896B1/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
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52—Details
    • B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/5861—Spouts
    • B65D75/5872—Non-integral spouts
    • B65D75/5883—Non-integral spouts connected to the package at the sealed junction of two package walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52—Details
    • B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/5816—Opening or contents-removing devices added or incorporated during package manufacture for tearing a corner or other small portion next to the edge, e.g. a U-shaped portion
    • B65D75/5822—Opening or contents-removing devices added or incorporated during package manufacture for tearing a corner or other small portion next to the edge, e.g. a U-shaped portion and defining, after tearing, a small dispensing spout, a small orifice or the like
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S383/00—Flexible bags
    • Y10S383/906—Dispensing feature

Definitions

  • the present invention relates to a bag according to the preamble of claim 1.
  • the known bags are provided with a pouring device which is arranged in the area of a corner so that the bags can be opened by severing a corner section.
  • a channel is formed solely by a pouring tube which is inserted and welded in parallel to the longitudinal edge 4 between the front and rear walls of the bag.
  • a preformed channel through deep drawing of the film parts is not available here.
  • the pouring pipe is placed against the weld seam of the longitudinal edge 4 between the film parts to determine its position and then the film parts are welded together on the opposite longitudinal side of the pouring pipe by means of a longitudinal seam, the film parts being pulled as closely as possible over the pouring pipe and the The weld seam should be made as close as possible to the pouring pipe.
  • Such an embodiment is disadvantageous. It is difficult to apply the last-mentioned weld seam close to the tube and thereby make it tight. Wrinkles can appear in the film parts. It would also be technically very complex to arrange the channel obliquely in the last solution, similar to the first solution mentioned, since then means for determining the position of the pouring tube are missing. So that the outflow of the container contents is good, the diameter of the pouring tube should not be too small, especially in the case of highly viscous liquids. In pouring pipes with a suitable and therefore larger diameter for fulfilling this purpose, cracks can occur in the film parts due to stretching of the film parts or the pipes are flattened if the longitudinal weld seam is as close as possible to the pipe as desired. To prevent the film parts from tearing, a thicker film would have to be selected for the bag. However, this is not desirable to save film material.
  • CH patent 677 093 describes a further solution which is intended to remedy the disadvantages indicated as far as possible.
  • an elaborate injection molded part is welded into the upper end of the foil bag, which holds the foil walls apart by means of wings and has a pouring channel.
  • the elaborate, specially manufactured injection molded part makes the whole bag more expensive.
  • EP-A-0 299 562 shows a container also made of film material.
  • this is not a collapsible bag, since its side walls are preformed over the entire surface to form a filling space of a predetermined, solid shape.
  • the problem of the side walls collapsing does not exist here.
  • the pouring device has a channel and a tube inserted therein, the tube extending into the preformed filling space of the container. In the case of such containers, there is a risk that the side walls will stick together when filled and that the outflow of the contents of the container will be made difficult, a priori, due to the differently designed container type.
  • the present invention has for its object to provide a collapsible bag as simple a solution as possible with minimal use of raw materials, wherein the collapse of the film parts in the area of the pouring device is prevented and a clearly defined channeling of the emptying of the container contents is to be obtained.
  • the inserted tube reinforces the zone in the area of the pouring device and prevents it from collapsing.
  • the thickness of the bag film no longer needs to be matched to the stress in the area of the pouring device. It can be matched to the load from the content and thus made thinner. This saves raw material.
  • the tube is no longer overloaded and a cheap, commercially available tube can be used, the inside diameter of which can now be matched to the desired outflow properties of the container contents and advantageously chosen as large as possible for highly viscous liquids.
  • the bag can thus be produced from a relatively thin film material, in which only one tube section is used as the foreign body.
  • the bag is generally emptied in one operation.
  • the space created by the filling material and the cavity created by the preformed bulge in the pouch walls in front of the pouring device merge into one another, so that after the pouch has been opened, the contents of the container can flow out without the risk of the pouch walls collapsing in the entrance zone of the pouring channel.
  • a bag of the type in question consists of a thermoplastic plastic film which is cut so that the side walls 1 and 2, as well as a known W-shaped folding base (see. EP-0 368 145 and EP-0 364 373) arise, which are joined together at the edges 3 by welding, gluing, heat sealing, etc., in order to produce a closed bag.
  • the bag need not be made from a one-piece film. So the bottom of the bag can be made of a separate film of the same or different quality and / or thickness than the walls.
  • the bag is also provided with corner seams at the corners in the area of the folded bottom. The corner seams are placed over the corners and each connect only one folding floor section to the directly opposite section of the front or rear wall. As a result, the outer folding edges form the edges on which the filled bag stands.
  • the folding base sections lying directly next to one another are preferably connected to one another by oblique corner seams.
  • the bag can be provided with a pouring device of different designs, as described below.
  • the pouring device shown in FIG. 1 comprises a pouring channel 4 and a tube 5 which is arranged in the pouring channel.
  • the pouring channel 4 is half formed by cylindrical, groove-shaped depressions which are formed in the side walls 1, 2.
  • Channel 4 is enclosed by a seam 6 placed over the corner section such that the upstream end of the pouring channel 4 lies outside this seam 6 and forms an inlet section 7.
  • the tube 5 is dimensioned such that in addition to the inlet section 7 there is an outlet section 8 of approximately the same size at the downstream end of the tube 5.
  • the tube 5 is fastened at the points designated 9 in the pouring channel 2.
  • a line 10 marked with the scissors symbol is attached to the outer surface of the bag, along which a section can be separated from the bag in order to open the latter.
  • nose-shaped depressions according to FIG. 2 can also be provided in the side walls 1, 2, in which the tube 5 is arranged and held.
  • FIGS. 3 and 4 show a second embodiment of the pouring device for the bag according to the invention.
  • the pouring device comprises a pouring channel 11 and a tube 13 which is arranged in the pouring channel 11.
  • the upstream end of the channel 11 opens into a pear-shaped space 12.
  • the channel 11 and the space 12 are each formed in half by depressions which are formed in the side walls 1, 2.
  • the tube 13 is so in the channel 11 arranged that the outlet section 8 is formed at the downstream end of the tube 13, and that the upstream end of the tube 13 projects into the pear-shaped space 12, which forms an inlet section.
  • the tube 13 is held in an area 14 of the channel 11 which adjoins the space 12 and is essentially displaceable in the axial direction.
  • the seam 6 is placed close to the wall of the channel 11 in this area 14, so that the tube 13 is guided.
  • the tube 13 is provided at both ends with a bead or flange 15 to secure the tube 13 against removal.
  • the dividing line 10 is placed in such a way that the tube 13 can be grasped when the bag is opened.
  • the main advantage of this solution according to the invention can be seen in particular in the fact that after the tube 13 has been pulled out, a pouring spout can be created, which makes it easier to transfer the contents of the bag without losing the advantages of the outflow.
  • FIGS. 5 to 6 show a third embodiment of the pouring device for the bag according to the invention.
  • the pouring device comprises a pouring channel 21 and a tube 22 which is arranged in the channel.
  • the upstream, inner end of the channel 21 opens into a lenticular or basin-shaped space 23.
  • the channel 21 and the space 23 are each formed in half by depressions which are formed in the side walls 1, 2.
  • the tube 22 is fixed in the channel 21 such that the outlet section 8 is formed at the downstream end of the tube 22 and that the upstream end of the tube 22 projects into the lenticular space 23, which has an inlet section forms.
  • the dividing line 10 is placed in such a way that it passes immediately in front of the downstream end of the tube 22.
  • a perforation 24 arranged partially and downstream around the channel 21 can also be provided in such a way that a pouring spout 26 is created by tearing off the section 25, as shown in FIG.
  • FIG. 7 shows a fourth embodiment of a pouring device for the bag according to the invention.
  • the pouring device is similar to that shown in FIG. 5 and comprises a pouring channel 21 and a tube 22 which is arranged in the pouring channel, the pouring channel 22 likewise opening into a lenticular space 23 with the upstream end.
  • the tube 22 is connected in the region of the upstream end by the seam 6 on the circumference to the side walls 1, 2 and closed by the seam 6 at the downstream end. Between these locations, the tube 22 is exposed in the pouring channel 21.
  • the dividing line 10 is placed in such a way that when the bag is opened, a section 29 of the tube 22 is also cut off in addition to the corner section part 28. Furthermore, a perforation 30 is provided which ends in the area in which the tube 22 lies freely in the pouring channel 21.
  • the perforation is first torn open and then the bag is cut along the dividing line 10. This creates a pouring spout that is similar to that shown in Figure 6.
  • the corner section is punched out in the form of a beak and the corner seam 6 follows the beak-shaped contour of the corner section.
  • the embodiment is designed essentially the same as in FIGS. 5 and 7 and like parts are designated by like reference numerals.
  • the tube 22 extends over the entire length of the preformed channel 21 and lies closely along this length against the channel walls.
  • the cavity 23 formed in the side walls 1 and 2 is approximately bean-shaped and it opens directly into the inlet end of the tube 22 with a gentle narrowing.
  • the embodiment according to FIG. 8 can also be provided with an angled channel and tube and / or with a locking pin.
  • the film walls forming the side walls made of thermoplastic material are heated and the pouring channel 4, 11 or 21 and the adjoining cavity 12 or 23 opening into the tube in the same process in a known manner in the deep-drawing process by means of vacuum, Compressed air and / or stamps are molded into the heated foil walls.
  • the pouring channel and the cavity could also be formed in only one heated film wall using the deep-drawing process.
  • the cylindrical plastic tube 5, 13 or 22 is then inserted into the preformed pouring channel and the weld seam 6, which is placed over the corner, and the other weld seams 3 are attached, with the exception of an area left open for filling the filling material.
  • the inserted tube is spot welded to the side walls to fix its position in the pouring channel.
  • the inner end of the tube preferably ends approximately at the inner boundary of the corner seam 6 to ensure the tube 6, the pouring channel, as shown at 7 in FIG. 1, is extended inwards relative to the tube 6 or the pouring channel or tube is one Bulge or cavity upstream, as shown at 12 in Fig. 3 and at 23 in Fig. 5, 7 and 8, the in the tube 6 opens.
  • the bag is filled with filling material up to about the height of the corner seams.
  • a closure pin can be provided which can be inserted into the outer end of the pouring channel or the tube.
  • pouring devices shown do not necessarily have to be arranged in a corner section. They can also be located on another suitable edge section of the bag.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
  • Fertilizing (AREA)
  • External Artificial Organs (AREA)

Claims (14)

  1. Sachet réalisé au moyen d'un matériau en feuille et comportant un fond ainsi que deux parois latérales planes réunies le long de leurs bords par une soudure linéaire, avec un bec verseur dans un coin ou une région du bord, ce bec étant agencé à l'intérieur de la soudure formant ce coin ou cette région de manière à ce que sa section permette de vider le contenu du sachet, la soudure à l'emplacement du coin ou de la région du bord étant formée de manière à entourer au moins partiellement le bec afin de maintenir l'embouchure de déversement en une position stable, le bec comportant un canal (4, 11, 21) formé par une rainure ménagée dans au moins une paroi latérale (1,2), caractérisé en ce que le bec comporte un tube (5, 13, 22) placé dans le canal pour empêcher que celui-ci ne s'affaisse et pour canaliser le déversement du contenu du sachet à travers le tube, et en ce qu'une cavité existe à proximité du bec, devant l'extrémité intérieure du canal ou du tuyau, sous forme d'un creux (12, 23) ménagé dans au moins une paroi latérale (1,2) du sachet pour amorcer le déversement du contenu du sachet à travers le tube.
  2. Sachet selon la revendication 1, caractérisé en ce que le canal (4, 11, 21) est formé pour moitié par une rainure dans chaque paroi latérale (1, 2), de façon à ce qu'une demi-section du canal se trouve dans chacune des parois latérales.
  3. Sachet selon une des revendications 1 ou 2, caractérisé en ce que le canal (4, 11, 21) est formé par des rainures cylindriques.
  4. Sachet selon la revendication 1, caractérisé en ce que la cavité (12, 23) est formée pour moitié par un creux ménagé dans chacune des parois latérales (1, 2), de façon à ce que chacune de celles-ci comprenne la moitié du volume de la cavité.
  5. Sachet selon une des revendications 1 à 4, caractérisé en ce que le tube (5, 13, 22) est fixé dans le canal (4, 11, 21).
  6. Sachet selon une des revendications 1 à 5, caractérisé en ce que le tube (13) est mobile dans le canal (11) et que des moyens (14) sont prévus dans le canal (11) et/ou sur le tube (13) pour éviter que le tube quitte le canal (11).
  7. Sachet selon une des revendications 1 à 6, caractérisé en ce que des perforations (24,30) sont prévues à proximité de la soudure (6).
  8. Sachet selon la revendication 7, caractérisé en ce que les perforations (24) sont en partie disposées du côté aval autour du canal (21) de manière à former un bec verseur (26) protubérant après l'arrachement.
  9. Sachet selon la revendication 8, caractérisé en ce qu'une section du tube (22) située du côté amont est fixée dans le canal, et que les perforations (30) sont disposées le long de cette section et transversalement par rapport au tube (22), de façon à ce qu'après l'arrachement ce tube (22) forme un bec verseur (26).
  10. Sachet selon la revendication 1, caractérisé en ce que la cavité (23) est en forme de lentille ou de haricot et converge vers l'embouchure du tube (figure 5).
  11. Sachet selon une des revendications 1 à 10, caractérisé en ce que le canal (4) se prolonge plus avant vers l'intérieur que le tube (5).
  12. Sachet selon une des revendications 1 - 11, caractérisé en ce que le tube communique à travers la prolongation (7) du canal (4) et/ou à travers la cavité (12, 23) avec l'intérieur du sachet afin d'obtenir un passage libre pour le déversement.
  13. Procédé pour la fabrication d'un sachet selon une des revendications 1 à 12 en un matériau plastique déformable par thermoplasticité, caractérisé en ce que le canal (4, 11, respectivement 21,) est formé par extrusion dans la feuille de plastique formant la ou les parois latérales, et que le tube (6) est ensuite placé dans le canal.
  14. Procédé selon la revendication 13, caractérisé en ce que l'on forme par la même extrusion le canal et la cavité (12, 23) avoisinante débouchant dans le tube.
EP92107971A 1991-05-16 1992-05-12 Poche Expired - Lifetime EP0515896B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4115923 1991-05-16
DE4115923 1991-05-16

Publications (2)

Publication Number Publication Date
EP0515896A1 EP0515896A1 (fr) 1992-12-02
EP0515896B1 true EP0515896B1 (fr) 1996-09-11

Family

ID=6431734

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92107971A Expired - Lifetime EP0515896B1 (fr) 1991-05-16 1992-05-12 Poche

Country Status (5)

Country Link
US (1) US5312189A (fr)
EP (1) EP0515896B1 (fr)
JP (1) JP3447752B2 (fr)
AT (1) ATE142590T1 (fr)
DE (1) DE59207087D1 (fr)

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GB2111944B (en) * 1981-12-22 1985-09-25 Metal Box Co Ltd Pouch-like bags for containing liquids
FR2532550B1 (fr) * 1982-09-02 1986-01-17 Synthelabo Biomedical Poches a usage medical, et en particulier destinees a l'alimentation parenterale
US4793121A (en) * 1987-01-02 1988-12-27 Jamison Mark D Dispensing spout pre-forming system for pouch
NL8701700A (nl) * 1987-07-17 1989-02-16 Heijenga S Management B V Houder voor een vloeibaar of pastavormig produkt.
CH677093A5 (en) * 1988-09-14 1991-04-15 Mifa Ag Frenkendorf Collapsible container for pourable materials - has moulded spout with two fastening wings set at corner area
FR2637572B1 (fr) * 1988-10-12 1990-12-14 Thimonnier Sa Recipient en matiere souple
CH677910A5 (fr) * 1988-11-09 1991-07-15 Cellpack Ag
US4978025A (en) * 1988-11-09 1990-12-18 Alizol S.A. Standable bag having an internal armature

Also Published As

Publication number Publication date
JP3447752B2 (ja) 2003-09-16
JPH05132069A (ja) 1993-05-28
ATE142590T1 (de) 1996-09-15
US5312189A (en) 1994-05-17
DE59207087D1 (de) 1996-10-17
EP0515896A1 (fr) 1992-12-02

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