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EP1424293B1 - Récipient d' emballage en plastique - Google Patents

Récipient d' emballage en plastique Download PDF

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Publication number
EP1424293B1
EP1424293B1 EP03027250A EP03027250A EP1424293B1 EP 1424293 B1 EP1424293 B1 EP 1424293B1 EP 03027250 A EP03027250 A EP 03027250A EP 03027250 A EP03027250 A EP 03027250A EP 1424293 B1 EP1424293 B1 EP 1424293B1
Authority
EP
European Patent Office
Prior art keywords
flat
packaging container
film
hose
films
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
EP03027250A
Other languages
German (de)
English (en)
Other versions
EP1424293A2 (fr
EP1424293A3 (fr
Inventor
Axel Uwe Klaus
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.)
Polymer-Synthese-Werk
Original Assignee
Polymer-Synthese-Werk
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 Polymer-Synthese-Werk filed Critical Polymer-Synthese-Werk
Publication of EP1424293A2 publication Critical patent/EP1424293A2/fr
Publication of EP1424293A3 publication Critical patent/EP1424293A3/fr
Application granted granted Critical
Publication of EP1424293B1 publication Critical patent/EP1424293B1/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
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/24—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants
    • B65D81/26—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants with provision for draining away, or absorbing, or removing by ventilation, fluids, e.g. exuded by contents; Applications of corrosion inhibitors or desiccators
    • B65D81/266—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants with provision for draining away, or absorbing, or removing by ventilation, fluids, e.g. exuded by contents; Applications of corrosion inhibitors or desiccators for absorbing gases, e.g. oxygen absorbers or desiccants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/008—Stiffening or reinforcing
    • 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
    • B65D75/38—Articles or materials enclosed in two or more wrappers disposed one inside the other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2155/00—Flexible containers made from webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2155/00—Flexible containers made from webs
    • B31B2155/002—Flexible containers made from webs by joining superimposed webs, e.g. with separate bottom webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2160/00—Shape of flexible containers
    • B31B2160/10—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2170/00—Construction of flexible containers
    • B31B2170/20—Construction of flexible containers having multi-layered walls, e.g. laminated or lined
    • B31B2170/204—Construction of flexible containers having multi-layered walls, e.g. laminated or lined involving folding a web about an already tubular web

Definitions

  • the invention relates to a packaging container made of plastic, consisting of a flat tube which is closed at least on one side and forms a bag-shaped container, wherein the flat tube outside the edge of two other flat films is surrounded, which at the longitudinal and transverse edges of the inner flat tube a Form edge overlap
  • Packaging containers made of plastic which consist for example of a single-layer or multi-layer flat hose, are required for various types of substances in order to protect them from contamination or, in the case of granular materials, to be able to deliver them in a specific packaging size.
  • packaging bags are used, which are made of a flat hose.
  • a desiccant for example silica gel, calcium sulfate or the like.
  • This is done, for example, with the aid of a perforated cover film, which is welded to cover the desiccant bag on the inner surface of the tubular film edge-shaped.
  • the sealed at one end of the packaging bag is everted and on the now exposed inner surface of a desiccant bag and above a perforated cover sheet is placed and welded with its edge on the inner surface.
  • a packaging bag which has only been welded at one end is used and a larger circular cut-out is incorporated and a previously perforated inner film and a second non-perforated outer film are welded from the outside to the edge of the cutout with the interposition of a desiccant.
  • cover films extend only over a small area of the packaging container without increasing the tightness of the packaging container,
  • British patent specification GB 515,014 discloses a packaging arrangement in which an inner flat hose is partially laminated from the outside with a flat film. In order to prevent the packaging container from tearing under high pressure, it is proposed to round out the corners of the packaging container, so that no acute-angled corners are created where the packaging container can tear.
  • an aseptic bag which is suitable for the separation of liquids.
  • This bag has another pocket within an outer pocket, the two pockets being separated by an air space. It is envisaged that the inner pocket is perforated to filter out individual particles from liquids.
  • US Pat. No. 3,838,794 discloses an arrangement of two nested bags wherein a pressurized air space is provided between the bags.
  • the pressurized air space serves to force liquid out of the inner bag to the outside.
  • German patent application DE 196 00 530 a double bag arrangement is disclosed, in which a non-transparent tubular film packaging is arranged in a further, transparent tubular film packaging.
  • This arrangement serves to store light-sensitive liquids, wherein the liquid penetrates from the outside into the transparent bag after opening the inner bag and thus the liquid level can be recognized by the transparent outer packaging.
  • the invention is therefore based on the object to provide a packaging container which resists high internal pressure, is gas and aroma-tight and which has a high rigidity and is easier to fill.
  • the packaging container according to the invention is based on the object to provide a packaging container available, which remains free after production of foreign particles and germs.
  • a further object of the invention is to provide a packaging container which can not only be manufactured and transported free of foreign particles and germs, but can also be reliably re-welded.
  • Yet another object of the invention is to provide a packaging material which can be safely wound in the closed state.
  • a uniform outer film layer is placed over the entire width of the inner flat tube, so that it can be achieved that the inner flat tube can be welded from the outside through the outer film.
  • This welding can be carried out over the entire width with the same temperature and a comparable heat flow, so that no uneven welding of the inner flat tube transversely to the machine direction occurs.
  • the packaging container both a high rigidity, especially at the opening edge, a gas and aroma resistance, a high resistance to high internal pressures, as in the storage of many Overfilled filled packaging may occur, a particle and germ deficiency, even during storage, and also has a safe Aufwickelhus.
  • the lamination is achieved that the heat flow through the composite layers in the welding of the inner tube is high enough that the inner tube, which has a higher melting temperature than the outer sheet material, high enough to weld the inner tube safely without that at this process dissolves the outer material.
  • the inner flat hose can, if required, still be welded during production by welding through the outer film material, so that the inner flat hose remains largely free of germs and particles and is slit on filling in a filling machine on one side, wherein at the Schlitzrändem by the stiffness of the outer film layer no rolling effect occurs, so that a machine filling without special measures for opening edge stabilization are necessary.
  • the inner flat tube can be re-welded with a generic welding machine, without cannulation or insufficient welding are expected. For filling the packaging bag described above, two methods are mainly used.
  • connection of the inner flat tube with the outer flat films can in this case be produced by bonding by hot melt adhesive or welding due to heat, wherein for filling the inner flat tube both in the inner and the outer flat films, a filling opening is present, which are subsequently closed.
  • the temperature for closing the inner flat tube or for laminating with the outer flat foil is preferably selected so that the temperature for laminating is lower than that for closing the flat tube.
  • the marginal overlap is uniformly ensured and an undesirable displacement of the inner flat tube can not occur is provided that the inner flat tube and the outer flat films are glued or welded together. This ensures that the inner flat tube is firmly fixed in relation to the outer flat foil.
  • the inner flat hose closed on one side in the form of individual bag-shaped containers in two outer two flat outer foils are spaced, wherein the flat films in the area between the inner bag-shaped flat hose touch.
  • the inner flat tube is then sealed, for example, welded, and then additionally glued or welded the outer flat films in the overlapping area.
  • the outer films can preferably consist of a laminated film or an aluminum foil.
  • the inner flat tube and the outer flat films are made of a multilayer film, wherein the two-layer inner flat tube with an outer layer of LDPE (low density polyethylene) and an inner layer of HDPE (High Density Polyethylene) is prepared and the outer flat films of LDPE or a multilayer film are produced, whereby the inner flat tube with the outer flat films can be welded together by the action of temperature when the two LDPE films are opposite.
  • the melting point is chosen so that the outer flat films are not damaged or blocked by the heat due to a higher melting temperature.
  • the particular advantage of the plastic packaging container according to the invention is that the packaging bags are provided with an additional protective film, which can be gas-tight and airtight, for example, in the form that an overlapping edge region is created, which is a complete enclosure of the inner Flat hose allows.
  • Another significant advantage is that a prefastening of the packaging container can be done and they are delivered as a roll, so that after a severing of the outer flat film individual packaging bags arise that have the aforementioned properties.
  • FIG. 1 shows, in a plan view for better illustration, a flat tube 1 with a lower flat foil 2, which can be glued to one another, for example, or else welded together.
  • the lower flat film 2 is dimensioned so that it projects beyond the edge region of the flat hose 1 on all sides and thus completely surrounds it.
  • the inner flat hose 1 is closed in the embodiment shown on one side by a weld 3, while the opposite side has an opening 4, in which a Teflon slide 5 is inserted to prevent closure of the opening 4 during manufacture.
  • multilayer films are used both as flat tube 1 and flat film 2, wherein the two-layer inner flat tube 1 is produced with an outer layer of LDPE and an inner layer of HDPE, while the outer flat film of LDPE or a multilayer film can be produced, the LDPA film opposite to the flat hose 1 comes to rest.
  • the melting point is chosen so that the outer flat film 2 is not damaged or blocked by the effect of heat due to a higher melting temperature.
  • a hotmelt adhesive can preferably be used.
  • Figure 2 shows the arrangement of Figure 1 with an additional upper flat film 6, which comes to cover with the lower flat film 2 and in the illustration shown, however, is slightly shifted to the top right and additionally has a folded corner region 7 for improved presentation.
  • Figure 3 shows a finished packaging container 10 with inner flat tube 1 and outer flat films 2, 6 after filling, wherein the inner flat tube 1 is closed on both sides by a weld 3, 8 and the outer flat films 2, 6 by welds 12, 13, 14 and 15 additional are closed.
  • weld seams are dispensed with, at least in the case of the outer flat films 2, 6 and either an adhesive coating is used instead or a laminated flat film 2, 6 is used which connects to each other and to the inner flat hose 1 as a result of low heat action without special weld allows.
  • weld seams are dispensed with, at least in the case of the outer flat films 2, 6 and either an adhesive coating is used instead or a laminated flat film 2, 6 is used which connects to each other and to the inner flat hose 1 as a result of low heat action without special weld allows.
  • welds 12, 13, 14, 15 for the outer flat films 2, 6 and for the inner flat hose 1 with the welds 3, 11 is shown.
  • Figure 4 and 5 shows in a side view and top view of the manufacturing process of the packaging container 10 according to the invention, wherein a prepared flat hose 1 is fed to a production line and simultaneously from supply rollers 16, 17, a lower and upper flat film 2, 6 is supplied in such a way that the flat tube. 1 spaced between the flat films 2, 6 comes to rest.
  • pressure rollers 18, 19 By means of pressure rollers 18, 19, the adhesion of the outer flat films 2, 6 on the flat hose 1 can be effected here, for example when using an adhesive film.
  • a weld is preferred is a longitudinal welding by a weld 12 by means of an upper and lower heating element 20, 21 and the production of a transverse weld 14 by two further heating rods 22, 23.
  • a first indicated production variant is based on a separation of the weld seam 14, so that individual packaging containers 10 are produced, which are fed to a packaging machine.
  • a separation of the individual packaging containers 10 is dispensed with and they are wound up on a roll which is further used in a packaging installation. Within the packaging machine, it is thus possible to handle individual packaging containers 10 and to fill them after cutting through the weld seam 14.
  • the welding device it is possible to coat the lower and upper flat films 2, 6 with an adhesive film facing the flat hose 1, so that the two outer flat films 2, 6 adhere directly to the flat top of the flat tube 1 and lie on each other in the edge region.
  • a hot melt adhesive it is possible to use a hot melt adhesive.
  • a connection of the inner flat hose 1 with the outer flat films 2 can be effected by a large-surface temperature action, wherein the connection is made with a suitable temperature selection, without the inner flat hose 1 is closed on all sides.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Food Science & Technology (AREA)
  • Bag Frames (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Wrappers (AREA)
  • Packages (AREA)

Claims (7)

  1. Récipient (10) d'emballage en matière plastique, constitué d'un tube (1) souple plat, qui est fermé au moins d'un côté et qui forme un récipient en forme de sac, le tube (1) souple plat étant entouré avec empiètement sur les bords à l'extérieur de deux rubans (2, 6) plats supplémentaires qui forment un chevauchement marginal sur les bords longitudinaux et transversaux du tube (1) souple plat se trouvant à l'intérieur,
    caractérisé
    en ce que le tube (1) souple plat est doublé sur toute la surface par les rubans plats.
  2. Récipient d'emballage suivant la revendication 1,
    caractérisé
    en ce que le tube (1) souple plat intérieur et les rubans (2, 6) plats supplémentaires ont une ouverture (4) de remplissage correspondante et peuvent, après le remplissage, être fermés par au moins un et de préférence par au moins deux cordons de liaison distincts, par exemple par des cordons (13, 18) de collure ou de soudure.
  3. Récipient d'emballage suivant la revendication 1 ou 2,
    caractérisé
    en ce que des récipients individuels en forme de sac du tube (1) souple plat, intérieur et fermé d'un côté sont reçus en étant à distance dans deux rubans (2, 6) plats extérieurs des deux côtés, les rubans (2, 6) se touchant dans la partie comprise entre les récipients intérieurs en forme de sac.
  4. Récipient d'emballage suivant l'une ou plusieurs des revendications 1 à 3,
    caractérisé
    en ce que plusieurs récipients sont préconfectionnés en marchandise, en rouleau et pour l'emploi de récipients individuels peuvent être utilisés après séparation des rubans (2, 6) plats extérieurs.
  5. Récipient d'emballage suivant l'une ou plusieurs des revendications 1 à 4,
    caractérisé
    en ce que les rubans (2, 6) plats extérieurs sont en un ruban doublé, notamment en ruban d'aluminium.
  6. Récipient d'emballage suivant la revendication 5,
    caractérisé
    en ce que le tube (1) souple plat intérieur et les rubans (2, 6) plats extérieurs sont constitués en une feuille à plusieurs couches.
  7. Récipient d'emballage suivant l'une ou plusieurs des revendications 1 à 6,
    caractérisé
    en ce que le tube (1) souple plat intérieur est en une feuille à deux couches, ayant une couche extérieure en polyéthylène basse densité et une couche intérieure en polyéthylène haute densité et les rubans (2, 6) plats extérieurs sont en polyéthylène haute densité ou en une feuille à plusieurs couches ayant une face intérieure en polyéthylène basse densité.
EP03027250A 2002-11-28 2003-11-28 Récipient d' emballage en plastique Expired - Lifetime EP1424293B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10255521 2002-11-28
DE10255521A DE10255521A1 (de) 2002-11-28 2002-11-28 Verpackungsbehälter aus Kunststoff

Publications (3)

Publication Number Publication Date
EP1424293A2 EP1424293A2 (fr) 2004-06-02
EP1424293A3 EP1424293A3 (fr) 2005-01-19
EP1424293B1 true EP1424293B1 (fr) 2007-06-06

Family

ID=32240494

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03027250A Expired - Lifetime EP1424293B1 (fr) 2002-11-28 2003-11-28 Récipient d' emballage en plastique

Country Status (3)

Country Link
EP (1) EP1424293B1 (fr)
AT (1) ATE364019T1 (fr)
DE (2) DE10255521A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005051640B4 (de) * 2005-10-26 2010-10-14 Nordenia Deutschland Gronau Gmbh Verpackungsbeutel, insbesondere für Schokoladenwaren

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB515014A (en) * 1937-08-04 1939-11-23 Leroy Lincoln Salfisberg Improvements in packages for storing and dispensing powders, pastes, liquids and like fluid substances
BE449192A (fr) * 1943-02-13
GB932524A (en) * 1961-12-05 1963-07-31 Spiral Mfg Proprietary Ltd Tubular moisture-proof packaging material and method of and apparatus for its manufacture
US3838794A (en) * 1972-07-10 1974-10-01 H Markham Package for storing and dispensing liquids
GB2074128B (en) * 1980-04-18 1984-02-15 Pillopak Bv Mailing-containers and a method of manufacture thereof
DK138295A (da) * 1995-12-06 1997-06-07 Tetra Laval Holdings & Finance Aseptisk påse för afskiljning av vätska
DE19655056C2 (de) * 1996-01-10 2001-03-01 Nutrichem Diaet & Pharma Gmbh Beutel zur Aufnahme mindestens einer Flüssigkeit und flüssigkeitsgefüllter Beutel
DE20106034U1 (de) * 2001-04-06 2001-07-05 August Töpfer & Co. (GmbH & Co.), 20539 Hamburg Verpackung für Badesalz

Also Published As

Publication number Publication date
DE50307413D1 (de) 2007-07-19
DE10255521A1 (de) 2004-06-24
EP1424293A2 (fr) 2004-06-02
EP1424293A3 (fr) 2005-01-19
ATE364019T1 (de) 2007-06-15

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