WO2003066471A1 - Container to be filled with a liquid, method for producing one such container, and welding tool for carrying out the production method - Google Patents

Container to be filled with a liquid, method for producing one such container, and welding tool for carrying out the production method Download PDF

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Publication number
WO2003066471A1
WO2003066471A1 PCT/DE2003/000335 DE0300335W WO03066471A1 WO 2003066471 A1 WO2003066471 A1 WO 2003066471A1 DE 0300335 W DE0300335 W DE 0300335W WO 03066471 A1 WO03066471 A1 WO 03066471A1
Authority
WO
WIPO (PCT)
Prior art keywords
container
seam
boundary
peel
welding tool
Prior art date
Application number
PCT/DE2003/000335
Other languages
German (de)
French (fr)
Inventor
Dietmar Hansel
Claus Haupert
Xiaogang Gao
Franz Kugelmann
Matthias Meisinger
Original Assignee
Fresenius Medical Care Deutschland Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fresenius Medical Care Deutschland Gmbh filed Critical Fresenius Medical Care Deutschland Gmbh
Priority to AU2003208280A priority Critical patent/AU2003208280A1/en
Publication of WO2003066471A1 publication Critical patent/WO2003066471A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
    • A61J1/00—Containers specially adapted for medical or pharmaceutical purposes
    • A61J1/05—Containers specially adapted for medical or pharmaceutical purposes for collecting, storing or administering blood, plasma or medical fluids ; Infusion or perfusion containers
    • A61J1/10—Bag-type containers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/347—General aspects dealing with the joint area or with the area to be joined using particular temperature distributions or gradients; using particular heat distributions or gradients
    • B29C66/3472—General aspects dealing with the joint area or with the area to be joined using particular temperature distributions or gradients; using particular heat distributions or gradients in the plane of the joint, e.g. along the joint line in the plane of the joint or perpendicular to the joint line in the plane of the joint
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
    • B29C66/7234—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a barrier layer
    • B29C66/72341—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a barrier layer for gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/818—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps
    • B29C66/8181—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the cooling constructional aspects
    • B29C66/81811—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the cooling constructional aspects of the welding jaws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/818—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps
    • B29C66/8187—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the electrical insulating constructional aspects
    • B29C66/81871—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the electrical insulating constructional aspects of the welding jaws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B29C66/91421—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature of the joining tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/919—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
    • B29C66/9192—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams
    • 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
    • B65D75/5855—Peelable seals
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2207/00—Methods of manufacture, assembly or production
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/76—Making non-permanent or releasable joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/431—Joining the articles to themselves
    • B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
    • B29C66/5326—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially flat
    • B29C66/53261—Enclosing tubular articles between substantially flat elements
    • B29C66/53262—Enclosing spouts between the walls of bags, e.g. of medical bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/818—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps
    • B29C66/8181—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the cooling constructional aspects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7128—Bags, sacks, sachets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7148—Blood bags, medical bags
    • 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
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/30—Containers, packaging elements or packages, specially adapted for particular articles or materials for articles particularly sensitive to damage by shock or pressure

Abstract

The invention relates to a container (1) to be filled with a liquid, consisting of interconnected surface elements of a thin-layer material, the inner region of the container being at least partially defined by means of a boundary (4). The invention also relates to a method for producing one such container, and to a welding tool for carrying out said production method. The aim of the invention is to produce one such container in such a way that it is highly fall-resistant. To this end, an easily separable peel seal (6) is provided approximately parallel to the side of the boundary facing the inner region of the container.

Description

BESCHREIBUNG DESCRIPTION
Behälter zum Befullen mit einer Flüssigkeit, Verfahren zum Herstellen eines derartigen Behälters und Schweißwerkzeug zum Durchführen des HerstellungsverfahrensContainers for filling with a liquid, method for producing such a container and welding tool for carrying out the production method
Die Erfindung betrifft einen Behälter zum Befullen mit einer Flüssigkeit, bestehend aus miteinander verbundenen Flächenelementen aus dünnschichtigem Material, wobei der Innenbereich des Behälters zumindest in Teilbereichen eine Begrenzung aufweist. Sie betrifft weiterhin ein Verfahren zum Herstellen eines derartigen Behälters sowie ein Schweißwerkzeug zum Durchfuhren des Herstellungsverfahrens.The invention relates to a container for filling with a liquid, consisting of interconnected surface elements made of thin-layer material, the inner region of the container having a boundary, at least in partial regions. It also relates to a method for producing such a container and a welding tool for carrying out the production method.
Ein Behälter gemäß dem Oberbegriff ist beispielsweise aus der WO 95/26177 bekannt. Dort wird ein Beutel beschrieben, der aus einer polymeren Mehrschichtfolie in Schlauchform besteht und dessen Beutelkammern oben und unten durch Schweißnähte im Außenrandbereich gebildet werden. Die hierfür verwendete Mehrschichtfolie ist so ausgebildet, daß sie bei einer ersten Schweißtemperatur eine peelfähige Verbindung und bei einer zweiten, höheren Schweißtemperatur eine feste Verbindung eingeht, was es ermöglicht, die durch eine Peelnaht gebildete Trennung zwischen einzelnen Kammern eines Mehrkammerbeutels aufzuheben und die in den einzelnen Kammern enthaltenen Flüssigkeiten zu mischen. Derartige Beutel werden insbesondere als Behälter für medizinische Flüssigkeiten verwendet.A container according to the preamble is known for example from WO 95/26177. There a bag is described which consists of a polymeric multilayer film in the form of a tube and whose bag chambers are formed at the top and bottom by weld seams in the outer edge area. The multilayer film used for this is designed so that it forms a peelable connection at a first welding temperature and a fixed connection at a second, higher welding temperature, which makes it possible to remove the separation between individual chambers of a multi-chamber bag formed by a peel seam and that in the individual Mix liquids contained in chambers. Such bags are used in particular as containers for medical liquids.
Behälter zum Befullen mit einer Flüssigkeit, bestehend aus miteinander verbundenen Flächenelementen aus dünnschichtigem Material (z.B. in Form von Schlauchfolien), wobei der Innenbereich des Behälters durch eine Begrenzung (z.B. eine Begrenzungsnaht oder durch Knickstellen der Folie) gebildet wird, werden aus zahlreichen Materialien, insbesondere jedoch Polymeren und Metallfolien hergestellt, und in vielen Bereichen verwendet, z.B. als Behälter für Getränke, flüssige Lebensmittel oder feste Lebensmittel in einer Konservierungsflüssigkeit (z.B. eingelegte Oliven). Die Begrenzungsnaht wird in der Regel entweder durch Verschweißen oder durch Verkleben der dünnschichtigen Flächenelementen hergestellt. In allen diesen Bereichen, insbesondere jedoch im Bereich der medizinischen Anwendungen ist es von großer Bedeutung, daß der Behälter eine ausreichende Fallfestigkeit aufweist, wobei im medizinischen Bereich beispielsweiese der Behälter beim Fall aus 2 m Höhe nicht aufplatzen sollte. Beim Aufprall auf den Boden werden die Nähte des Behälters starken Druckstößen ausgesetzt, die oftmals die Tragfähigkeit übersteigen und zum Versagen der Nähte führen.Containers for filling with a liquid, consisting of interconnected surface elements made of thin-layer material (e.g. in the form of tubular films), the inner region of the container being formed by a boundary (for example a boundary seam or by kinking the film) are made from numerous materials, in particular however, polymers and metal foils are produced and used in many fields, for example as containers for beverages, liquid foods or solid foods in a preserving liquid (for example pickled olives). The boundary seam is usually produced either by welding or by gluing the thin-layer surface elements. In all of these areas, but especially in the field of medical applications, it is of great importance that the container has sufficient drop resistance, in the medical field, for example, the container should not burst when dropped from a height of 2 m. Upon impact with the floor, the seams of the container are subjected to strong pressure surges, which often exceed the load-bearing capacity and lead to failure of the seams.
Eine Probenpackung beispielsweise für kosmetische Proben, die durch zwei über eine Peelnaht verbundene Flächenelemente gebildet ist, ist beispielsweise aus der WO 98/56568 bekannt.A sample pack, for example for cosmetic samples, which is formed by two surface elements connected by a peel seam, is known for example from WO 98/56568.
Die WO 01/80806 beschreibt einen Behälter zum Aufbewahren von Flüssigkeiten, wobei in einem unteren Bereich, der zum oberen Bereich des Behälters hin durch eine weiche Trennwand abgetrennt ist, die Flüssigkeit aufbewahrt wird, und wobei die Trennwand beim Herunterfallen des Behälters nicht zerstört wird.WO 01/80806 describes a container for storing liquids, the liquid being stored in a lower region, which is separated from the upper region of the container by a soft partition, and the partition is not destroyed when the container falls down.
Aus der DE 197 37 471 AI ist eine Heizeinrichtung, insbesondere für Geräte zum thermischen Bearbeiten von Folien, bekannt, mit der ein Wärmeimpuls mit steilen Aufheiz- und Abkühlflanken erzeugbar ist. Dies wird dadurch erreicht, daß auf einem Metallsubstrat mit zugeordneter Kühlvorrichtung eine elektrisch isolierende Schicht vorgesehen wird, auf der mindestens eine Dickschichtleiterbahn als Heizleiter aufgebracht ist.From DE 197 37 471 AI a heating device, in particular for devices for the thermal processing of foils, is known with which a heat pulse with steep heating and cooling edges can be generated. This is achieved in that an electrically insulating layer is provided on a metal substrate with an associated cooling device, on which at least one thick-film conductor track is applied as a heating conductor.
ufgabe der Erfindung ist es, einen Behälter gemäß dem Oberbegriff zu schaffen, der eine lohe Fallfestigkeit aufweist.The object of the invention is to create a container according to the preamble which has a low drop resistance.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß in etwa parallel zu der Begrenzung :u dem Innenbereich des Behälters hin eine leichter trennbare Peelnaht angeordnet ist.This object is achieved according to the invention in that a peel seam which is easier to separate is arranged approximately parallel to the boundary: u towards the inside of the container.
)ie Peelnaht, die unmittelbar neben der Begrenzung oder von dieser beabstandet angeordnet ein kann, nimmt Druckstöße auf und reißt bei Stoßwellen entsprechender Stärke, wobei sie Energie absorbiert und somit den Druck auf die dahinter angeordnete Begrenzung (gleich ob iese durch eine Knickstelle der Folie, durch Verschweißen, Kleben oder auf andere Weise ebildet wurde) mindert. Durch das Vorsehen mehrerer Peelnähte oder einer entsprechend breiten Peelnaht vor der Begrenzung kann auch bei wiederholtem Aufprall des Behälters jeweils die Begrenzung durch das kontrollierte Aufreißen einer Peelnaht geschont werden. Die Belastbarkeit des Behälters durch Stoßkräfte, wie sie insbesondere beim Aufprall auftreten, wird auf diese Weise deutlich erhöht, je nach Konstellation sogar verdoppelt. Ist dies nicht erforderlich, kann bei gleichbleibender Fallbelastbarkeit die eingesetzte Materialstärke der Flächenelemente reduziert werden und dadurch Materialkosten eingespart werden.) The peel seam, which can be arranged directly next to or at a distance from the boundary, absorbs pressure surges and tears in the case of shock waves of corresponding strength, absorbing energy and thus the pressure on the boundary arranged behind (regardless of whether this is caused by a kink in the film, by welding, gluing or in some other way). By providing several peel seams or one accordingly wide peel seam in front of the boundary, the boundary can be spared by repeatedly tearing open a peel seam, even if the container is repeatedly impacted. The resilience of the container due to impact forces, such as occur particularly in the event of an impact, is significantly increased in this way and, depending on the constellation, even doubled. If this is not necessary, the material thickness of the surface elements used can be reduced while the load-bearing capacity remains the same, thereby saving material costs.
Die Schälkraft der Peelnaht muß auf die jeweilige Anwendung und Form des Behälters, das Material der Flächenelemente und die Verbindungsart der Flächenelemente abgestimmt werden. Ein weiterer Vorteil der Erfindung besteht darin, daß die Kerbeinflüsse von der eigentlichen Schweißnaht auf die Folie durch das Vorsehen einer Peelnaht deutlich reduziert werden. Der erfindungsgemäße Behälter ist für alle Flüssigkeiten bzw. in Flüssigkeiten gelagerte Feststoffe verwendbar.The peeling force of the peel seam must be matched to the respective application and shape of the container, the material of the surface elements and the type of connection of the surface elements. Another advantage of the invention is that the notch influences from the actual weld seam on the film are significantly reduced by the provision of a peel seam. The container according to the invention can be used for all liquids or solids stored in liquids.
Eine bevorzugte Ausgestaltung der Erfindung besteht darin, daß die Begrenzung als Begrenzungsnaht ausgebildet ist.A preferred embodiment of the invention is that the boundary is designed as a boundary seam.
Diese Art der Begrenzung ist durch Schweißen oder Kleben leicht herstellbar. Aus einer Schlauchfolie mittels einer oberen und einer unteren Begrenzungsnaht ein flüssigkeitsdichter Behälter erstellt werden. Ebenso kann aus zwei übereinandergelegten Flächenelementen durch Erstellen von Begrenzungsnähten ein Behälter erstellt werden.This type of limitation is easy to manufacture by welding or gluing. A liquid-tight container can be created from a tubular film by means of an upper and a lower boundary seam. A container can also be created from two superimposed surface elements by creating boundary seams.
Es liegt im Rahmen der Erfindung, daß die Peelnaht 1 bis 20 mm breit ist.It is within the scope of the invention that the peel seam is 1 to 20 mm wide.
Im Rahmen von Versuchen hat sich gezeigt, daß bereits bei 1 mm Breite der Peelnaht eine Schutzwirkung für die Begrenzung feststellbar ist. Je nach Anwendung und Zahl der Peelnähte sowie der erforderlichen Behältergröße kann der Abstand zwischen Peelnaht und Begrenzung in einem großen Bereich variiert werden.Tests have shown that a protective effect for the limitation can be determined even at 1 mm width of the peel seam. Depending on the application and number of peel seams and the required container size, the distance between peel seam and boundary can be varied over a wide range.
Es liegt im Rahmen der Erfindung, daß der Behälter aus polymerem Material besteht. Polymeres Material eignet sich aufgrund der geringen Materialkosten und der guten Schweißbarkeit für zahlreiche Anwendungsfälle.It is within the scope of the invention that the container is made of polymeric material. Due to the low material costs and the good weldability, polymer material is suitable for numerous applications.
Eine Ausbildung der Erfindung besteht darin, daß die Flächenelemente durch Verschweißen miteinander verbunden sind.An embodiment of the invention is that the surface elements are connected to one another by welding.
Bei einer bevorzugten Ausführungsform der Erfindung geht das polymere Material bei einer ersten Schweißtemperatur eine peelfähige Verbindung und bei einer zweiten, höheren Schweißtemperatur eine feste Verbindung ein.In a preferred embodiment of the invention, the polymeric material forms a peelable connection at a first welding temperature and a fixed connection at a second, higher welding temperature.
Mit einem derartigen Material können in einem Arbeitsgang Schweißnähte von unterschiedlicher Festigkeit hergestellt werden.With such a material, weld seams of different strengths can be produced in one operation.
Es ist vorteilhaft, daß das polymere Material eine polymere Mehrschichtfolie mit zwei oder mehr Schichten ist.It is advantageous that the polymeric material is a polymeric multilayer film with two or more layers.
Es ist zwar auch eine Monofolie denkbar, mit Mehrschichtfolien können jedoch zahlreiche Kriterien erfüllt werden, z.B. Gasdundurchlässigkeit, Sterilisierbarkeit, Biokompatibilität, geringe Herstellkosten, etc.Although a monofilm is also conceivable, numerous criteria can be met with multilayer films, e.g. Gas impermeability, sterilizability, biocompatibility, low manufacturing costs, etc.
Weiterhin ist vorgesehen, daß die Peelnaht entlang ihres Verlaufs Unterbrechungen aufweist, wohingegen die Begrenzung durchgehend ausgebildet ist.It is further provided that the peel seam has interruptions along its course, whereas the boundary is continuous.
Auch dies stellt eine Möglichkeit dar, in einem Arbeitsgang Nähte verschiedener Festigkeit herzustellen, gleich ob es sich um Schweiß- oder um Klebenähte handelt.This is also an option for producing seams of different strengths in one work step, regardless of whether they are welded or glued.
Eine Ausgestaltung der Erfindung besteht darin, daß die Flächenelemente durch Verkleben miteinander verbunden sind.One embodiment of the invention is that the surface elements are connected to one another by gluing.
Im Rahmen der Erfindung liegt auch ein Verfahren zum Herstellen eines erfindungsgemäßen Behälters, wobei der Behälter durch das Verbinden von Flächenelementen aus dünnschichtigem Material hergestellt wird, und der Innenbereich des Behälters zumindest in Teilbereichen eine Begrenzung aufweist, wobei in etwa parallel zu der Begrenzung zu dem Innenbereich des Behälters hin eine leichter trennbare Peelnaht angeordnet ist.A method for producing a container according to the invention also lies within the scope of the invention, the container being produced from thin-layer material by connecting surface elements, and the interior of the container at least in Partial areas has a boundary, with a peel seam that is easier to separate being arranged approximately parallel to the boundary toward the inner region of the container.
Hierbei ist es vorteilhaft, daß die Begrenzung als Begrenzungsnaht ausgebildet ist. Weiterhin liegt im Rahmen der Erfindung ein Verfahren zum Herstellen eines erfindungsgemäßen Behälters, wobei die Begrenzungsnaht und die Peelnaht gleichzeitig über ein Schweiß Werkzeug mit asymmetrischem Temperaturverlauf quer zur Nahtrichtung aufgebracht werden, wobei die Peelnaht mit einer geringeren Temperatur aufgebracht wird als die Begrenzungsnaht.It is advantageous here that the boundary is designed as a boundary seam. Furthermore, within the scope of the invention is a method for producing a container according to the invention, the boundary seam and the peel seam being applied simultaneously via a welding tool with an asymmetrical temperature profile transverse to the seam direction, the peel seam being applied at a lower temperature than the boundary seam.
Ebenso ist erfindungsgemäß vorgesehen, daß die Begrenzungsnaht und die Peelnaht gleichzeitig über ein Schweißwerkzeug aufgebracht werden, wobei das Schweißwerkzeug entlang dem Verlauf der Peelnaht Unterbrechungen aufweist.It is also provided according to the invention that the boundary seam and the peel seam are applied simultaneously via a welding tool, the welding tool having interruptions along the course of the peel seam.
Im Rahmen der Erfindung liegt weiterhin ein Schweißwerkzeug zum Durchführen des erfindungsgemäßen Verfahrens, wobei das Schweißwerkzeug einen asymmetrischem Temperaturverlauf quer zur Nahtrichtung aufweist.A welding tool for carrying out the method according to the invention is also within the scope of the invention, the welding tool having an asymmetrical temperature profile transverse to the seam direction.
Ebenso ist zu der Erfindung ein Schweißwerkzeug zum Durchfuhren des erfindungsgemäßen Verfahrens gehörig, das entlang dem Verlauf der Peelnaht Unterbrechungen der Heizschicht aufweist.The invention also includes a welding tool for carrying out the method according to the invention, which has interruptions in the heating layer along the course of the peel seam.
Nachfolgend wird ein Ausführungsbeispiel der Erfindung anhand von Zeichnungen erläutert.An exemplary embodiment of the invention is explained below with reference to drawings.
Es zeigenShow it
Fig. 1 einen erfindungsgemäßen Behälter,1 shows a container according to the invention,
Fig. 2a undFig. 2a and
Fig. 2b ein herkömmliches Schweißwerkzeug für die Herstellung von derartigen Behältern sowie der damit erzielte Temperaturverlauf quer zur Nahtrichtung, Fig. 3 ein erfindungsgemäßes Schweißwerkzeug für die Herstellung von derartigen Behältern sowie der damit erzielte Temperaturverlauf quer zur Nahtrichtung.2b shows a conventional welding tool for the production of such containers and the temperature profile achieved thereby transversely to the seam direction, Fig. 3 shows a welding tool according to the invention for the production of such containers as well as the temperature profile achieved thereby transverse to the seam direction.
Der in Fig. 1 dargestellte Behälter 1 besteht aus zwei miteinander verbundenen Flächenelementen aus dünnschichtigem Material, im vorliegenden Beispiel einer scWaucMörmigen polymeren Mehrschichtfolie, die bei einer ersten Temperatur eine peelfähige Verbindung und bei einer zweiten, höheren Temperatur eine feste Verbindung eingeht. Es sind jedoch grundsätzlich beliebige andere dünnschichtige Materialien und Verbindungstechniken möglich, z.B. auch miteinander verklebte Metallbahnen.The container 1 shown in FIG. 1 consists of two interconnected surface elements made of thin-layer material, in the present example a scWauc-shaped polymeric multilayer film, which forms a peelable connection at a first temperature and a fixed connection at a second, higher temperature. However, any other thin-layer materials and joining techniques are possible in principle, e.g. also metal sheets glued together.
Der zur Aufnahme einer Flüssigkeit dienende Innenbereich 2 des Behälters 1 weist einen Stutzen 3 auf und wird aus einer schlauchförmigen Folie durch jeweils eine Begrenzungsnaht 4 im oberen und im unteren Bereich des Behälters 1 gebildet. Weiterhin ist eine Aufhängevorrichtung 5 vorgesehen.The inner area 2 of the container 1, which is used to hold a liquid, has a nozzle 3 and is formed from a tubular film by a boundary seam 4 in the upper and lower area of the container 1. A suspension device 5 is also provided.
In etwa parallel zu der Begrenzungsnaht 4 ist zum Innenbereich des Behälters 1 hin eine etwa 1 bis 20 mm breite Peelnaht 6 angeordnet, die leichter trennbar ist als die Begrenzungsnaht 4. Ob und mit welcher Distanz zwischen Begrenzungsnaht 4 und Peelnaht 6 ein Abstand vorliegt, ergibt sich aus der jeweiligen Anwendung, der Behältergröße, dem erforderlichen Volumen und der Anzahl der Peelnähte 6. Es ist durchaus möglich, mehrere parallele Peelnähte 6 vorzusehen, um eine höhere Fallsicherheit bzw. eine Sicherheit gegen mehrmaligen Aufprall zu erreichen. Die erfindungsgemäße Vorgehensweise ergibt bereits bei einer Breite der Peelnaht 6 von nur 1 mm eine signifikante Steigerung der Fallfestigkeit, so daß der zusätzliche Platzbedarf ausgesprochen gering ist.Approximately parallel to the boundary seam 4, an approximately 1 to 20 mm wide peel seam 6 is arranged toward the inner region of the container 1, which is easier to separate than the boundary seam 4. Whether and with what distance there is a distance between the boundary seam 4 and the peel seam 6 from the respective application, the container size, the required volume and the number of peel seams 6. It is entirely possible to provide a plurality of parallel peel seams 6 in order to achieve a higher level of safety against falling or a multiple impact. The procedure according to the invention results in a significant increase in the drop resistance even with a width of the peel seam 6 of only 1 mm, so that the additional space requirement is extremely small.
Statt der durch unterschiedliche Schweißtemperaturen in ihrer Festigkeit unterschiedlichen Nähte können auch Nähte vorgesehen sein, bei denen die Begrenzungsnaht 4 durchgehend ausgebildet ist und die Peelnaht 6 entlang ihres Verlaufs Unterbrechungen aufweist, wobei die Unterbrechungen so klein sein können, daß dennoch kein Flüssigkeitsdurchtritt erfolgt.Instead of the seams differing in their strength due to different welding temperatures, seams can also be provided in which the boundary seam 4 is continuous and the peel seam 6 has interruptions along its course, the interruptions being so small that there is still no liquid passage.
Durch das Vorsehen von Peelnähten wird es möglich, einen Teil des Druckstoßes, wie er bei sinem Aufprall des Behälters auftritt, durch das kontrollierte Aufreißen der Peelnaht 6 zu adsorbieren und die bezüglich des Druckstoßes dahinter liegende Begrenzungsnaht 4 zu schonen. Hierdurch wird die Fallfestigkeit des Behälters deutlich erhöht; in Versuchen konnte eine Verdoppelung der Fallfestigkeit festgestellt werden. Alternativ ist es selbstverständlich möglich, bei gleicher Fallfestigkeit die Stärke der Materialbahnen zu reduzieren, womit Material eingespart werden kann.The provision of peel seams makes it possible to absorb part of the pressure surge, as occurs in the event of a collision of the container, by controlled peeling of the peel seam 6 adsorb and protect the boundary seam 4 located behind with respect to the pressure surge. As a result, the drop resistance of the container is significantly increased; Experiments have shown that the drop resistance has doubled. Alternatively, it is of course possible to reduce the thickness of the material webs with the same drop resistance, with which material can be saved.
In Fig. 2a ist ein Werkzeug 7 dargestellt, wie es herkömmlich zum Erstellen der Begrenzungsnähte 4 verwendet wird. Auf einem Metallsubstrat 8 mit zugeordneter Kühlvorrichtung wird eine elektrisch isolierende Keramikschicht 9 vorgesehen, auf der (teilweise unter Zwischenschaltung von Isolationsschichten 13) wiederum mindestens eine Dickschichtleiterbahn 10 als Heizleiter aufgebracht ist. Aus Fig. 2 ist deutlich zu entnehmen, daß der Aufbau der Heizschicht quer zur Nahtrichtung (Pfeil) symmetrisch ist. Der Temperaturverlauf quer zur Nahtrichtung (Fig. 2b) ist somit ebenfalls weitgehend symmetrisch.A tool 7 is shown in FIG. 2a, as is conventionally used to create the boundary seams 4. An electrically insulating ceramic layer 9 is provided on a metal substrate 8 with an associated cooling device, on which (partly with the interposition of insulation layers 13) in turn at least one thick-layer conductor track 10 is applied as a heating conductor. From Fig. 2 it can clearly be seen that the structure of the heating layer transverse to the seam direction (arrow) is symmetrical. The temperature profile transverse to the direction of the seam (FIG. 2b) is thus also largely symmetrical.
Bei dem in Fig. 3a dargestellten erfindungsgemäßen Werkzeug ist dies nicht der Fall. Dort ist ein erster Bereich 11 vorgesehen, mit dem die Begrenzungsnaht 4 erstellt wird und an den sich ein zweiter Bereich 12 anschließt, mit dem aufgrund der geringeren Schweißtemperaturen (siehe Temperaturverlauf in Fig. 3b) eine Peelnaht 6 erstellt wird. Der gestaffelte Aufbau der Dickschichtleiterbahnen 10 mit dazwischen angeordneten Isolationsschichten 13 läßt das Einstellen von fast beliebigen Temperaturen und Nahtbreiten im Bereich der Schweißnähte 4, 6 zu. Je nach Ausgestaltung der Dickschichtleiterbahnen 10, dem Vorliegen bzw. der Anordnung von Isolationsschichten 13 kann die Schälkraft der Peelnaht 6 auf das verwendete Material und die jeweilige Anwendung des Behälters 1 abgestimmt werden.This is not the case with the tool according to the invention shown in FIG. 3a. There, a first area 11 is provided, with which the boundary seam 4 is created and to which a second area 12 adjoins, with which a peel seam 6 is created due to the lower welding temperatures (see temperature profile in FIG. 3b). The staggered structure of the thick-film conductor tracks 10 with insulation layers 13 arranged between them allows the setting of almost any temperature and seam width in the area of the weld seams 4, 6. Depending on the configuration of the thick-film conductor tracks 10, the presence or the arrangement of insulation layers 13, the peeling force of the peel seam 6 can be matched to the material used and the respective application of the container 1.
Entsprechendes gilt auch für Klebeverbindungen beim Herstellen von Flüssigkeitsbehältern. Auch dort kann vor der eigentlichen Begrenzungsnaht eine leichter lösbare Peelnaht vorgesehen werden, z.B. durch das Vorsehen von Unterbrechungen entlang des Verlaufes der Peelnaht oder aber durch Verwendung unterschiedlicher Klebstoffe, so daß auch hier bei Auftreten eines Druckstoßes ein kontrolliertes Aufreißen der Peelnaht erfolgt, bei dem zumindest ein Teil des Druckstoßes absorbiert wird, so daß die dahinter liegende Begrenzungsnaht nur noch mit einem verminderten Druckstoß belastet wird. The same applies to adhesive connections when manufacturing liquid containers. There, too, a more easily detachable peel seam can be provided before the actual boundary seam, e.g. by providing interruptions along the course of the peel seam or by using different adhesives, so that here, too, when a pressure surge occurs, the peel seam is torn open in a controlled manner, in which at least part of the pressure surge is absorbed, so that the boundary seam behind it only remains is loaded with a reduced pressure surge.

Claims

PATENTANSPRÜCHE
1. Behälter zum Befallen mit einer Flüssigkeit, bestehend aus durch miteinander verbundenen Flächenelementen aus dünnschichtigem Material, wobei der Innenbereich des Behälters zumindest in Teilbereichen eine Begrenzung aufweist, dadurch gekennzeichnet, daß in etwa parallel zu der Begrenzung (4) zu dem Innenbereich (2) des Behälters (1) hin eine leichter trennbare Peelnaht (6) angeordnet ist.1. container for infesting with a liquid, consisting of interconnected surface elements made of thin-layer material, the inner region of the container having a boundary at least in partial regions, characterized in that approximately parallel to the boundary (4) to the inner region (2) a more easily separable peel seam (6) is arranged on the container (1).
2. Behälter gemäß Anspruch 1, dadurch gekennzeichnet, daß die Begrenzung (4) als Begrenzungsnaht (4) ausgebildet ist.2. Container according to claim 1, characterized in that the boundary (4) is designed as a boundary seam (4).
3. Behälter gemäß Anspruch 1, dadurch gekennzeichnet, daß die Peelnaht (6) 1 bis 20 mm breit ist.3. Container according to claim 1, characterized in that the peel seam (6) is 1 to 20 mm wide.
4. Behälter gemäß Anspruch 1, dadurch gekennzeichnet, daß der Behälter (1) aus polymerem Material besteht.4. Container according to claim 1, characterized in that the container (1) consists of polymeric material.
5. Behälter gemäß Anspruch 1, dadurch gekennzeichnet, daß die Flächenelemente durch Verschweißen miteinander verbunden sind.5. A container according to claim 1, characterized in that the surface elements are connected to one another by welding.
6. Behälter gemäß Anspruch 4, dadurch gekennzeichnet, daß das polymere Material bei einer ersten Schweißtemperatur eine peelfähige Verbindung und bei einer zweiten, höheren Schweißtemperatur eine feste Verbindung eingeht.6. A container according to claim 4, characterized in that the polymeric material enters into a peelable connection at a first welding temperature and a fixed connection at a second, higher welding temperature.
7. Behälter gemäß Anspruch 3, dadurch gekennzeichnet, daß das polymere Material eine polymere Mehrschichtfolie mit zwei oder mehr Schichten ist.7. Container according to claim 3, characterized in that the polymeric material is a polymeric multilayer film with two or more layers.
8. Behälter gemäß Anspruch 1, dadurch gekennzeichnet, daß die Peelnaht (6) entlang ihres Verlaufs Unterbrechungen aufweist, wohingegen die Begrenzung (4) durchgehend ausgebildet ist. 8. A container according to claim 1, characterized in that the peel seam (6) has interruptions along its course, whereas the boundary (4) is continuous.
9. Behälter gemäß Anspruch 1, dadurch gekennzeichnet, daß die Flächenelemente durch Verkleben miteinander verbunden sind.9. A container according to claim 1, characterized in that the surface elements are interconnected by gluing.
10. Verfahren zum Herstellen eines Behälters gemäß den Ansprüchen 1 bis 9, wobei der Behälter durch das Verbinden von Flächenelementen aus dünnschichtigem Material hergestellt wird, wobei der Innenbereich des Behälters zumindest in Teilbereichen eine Begrenzung aufweist, dadurch gekennzeichnet, daß in etwa parallel zu der Begrenzung (4) zu dem Innenbereich (2) des Behälters (1) hin eine leichter trennbare Peelnaht (6) angeordnet ist.10. A method for producing a container according to claims 1 to 9, wherein the container is made by connecting surface elements of thin-layer material, the inner region of the container having a boundary at least in partial areas, characterized in that approximately parallel to the boundary (4) a more easily separable peel seam (6) is arranged towards the inner region (2) of the container (1).
11. Verfahren gemäß Anspruch 10, dadurch gekennzeichnet, daß die Begrenzung (4) als Begrenzungsnaht (4) ausgebildet ist.11. The method according to claim 10, characterized in that the boundary (4) is designed as a boundary seam (4).
12. Verfahren zum Herstellen eines Behälters gemäß Anspruch 11, dadurch gekennzeichnet, daß die Begrenzungsnaht (4) und die Peelnaht (6) gleichzeitig über ein Schweißwerkzeug (7) mit asymmetrischem Temperaturverlauf quer 1 zur Nahtrichtung aufgebracht werden, wobei die Peelnaht (6) mit einer geringeren Temperatur aufgebracht wird als die Begrenzungsnaht (4).12. A method of producing a container according to claim 11, characterized in that the boundary seam (4) and the peel seam (6) are simultaneously applied on a welding tool (7) with an asymmetric temperature profile transversely 1 to the seam direction, the peel seam (6) is applied at a lower temperature than the boundary seam (4).
13. Verfahren zum Herstellen eines Behälters gemäß Anspruch 11, dadurch gekennzeichnet, daß die Begrenzungsnaht (4) und die Peelnaht (6) gleichzeitig über ein Schweißwerkzeug (7) aufgebracht werden, wobei das Schweißwerkzeug (7) entlang dem Verlauf der Peelnaht (6) Unterbrechungen aufweist.13. A method for producing a container according to claim 11, characterized in that the boundary seam (4) and the peel seam (6) are applied simultaneously via a welding tool (7), the welding tool (7) along the course of the peel seam (6) Has interruptions.
14. Schweißwerkzeug zum DurcMühren des Verfahrens gemäß Anspruch 12, dadurch gekennzeichnet, daß das Schweißwerkzeug (7) einen asymmetrischem Temperaturverlauf quer zur Nahtrichtung aufweist.14. Welding tool for performing the method according to claim 12, characterized in that the welding tool (7) has an asymmetrical temperature profile transverse to the direction of the seam.
15. Schweiß Werkzeug zum Durchführen des Verfahrens gemäß Anspruch 13, dadurch gekennzeichnet, daß das Schweißwerkzeug (7) entlang dem Verlauf der Peelnaht Unterbrechungen der Heizschicht aufweist. 15. welding tool for performing the method according to claim 13, characterized in that the welding tool (7) along the course of the peel seam has interruptions in the heating layer.
PCT/DE2003/000335 2002-02-06 2003-02-06 Container to be filled with a liquid, method for producing one such container, and welding tool for carrying out the production method WO2003066471A1 (en)

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US7740730B2 (en) 2004-04-15 2010-06-22 Teich Ag Method of closing a container with a lid
WO2018165300A1 (en) * 2017-03-08 2018-09-13 B. Braun Medical Inc. Flexible containers and related methods
US10654632B2 (en) 2017-03-08 2020-05-19 B. Braun Medical Inc. Flexible containers and related methods

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