DE4427955A1 - Mfr. of filter bag of air and liquid=permeable material - Google Patents

Mfr. of filter bag of air and liquid=permeable material

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Publication number
DE4427955A1
DE4427955A1 DE4427955A DE4427955A DE4427955A1 DE 4427955 A1 DE4427955 A1 DE 4427955A1 DE 4427955 A DE4427955 A DE 4427955A DE 4427955 A DE4427955 A DE 4427955A DE 4427955 A1 DE4427955 A1 DE 4427955A1
Authority
DE
Germany
Prior art keywords
filter material
filter
section
mfr
longitudinal edges
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
DE4427955A
Other languages
German (de)
Other versions
DE4427955B4 (en
Inventor
Christoph Goetz
Folker Richter
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.)
TEA GOETZ GMBH ACADEMY OF TEA, 30179 HANNOVER, DE
Original Assignee
Christoph Goetz & Co Teehandel
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 Christoph Goetz & Co Teehandel filed Critical Christoph Goetz & Co Teehandel
Priority to DE4427955A priority Critical patent/DE4427955B4/en
Publication of DE4427955A1 publication Critical patent/DE4427955A1/en
Application granted granted Critical
Publication of DE4427955B4 publication Critical patent/DE4427955B4/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/70—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for
    • B65D85/804—Disposable containers or packages with contents which are mixed, infused or dissolved in situ, i.e. without having been previously removed from the package
    • B65D85/808—Disposable containers or packages with contents which are mixed, infused or dissolved in situ, i.e. without having been previously removed from the package for immersion in the liquid to release part or all of their contents, e.g. tea 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • 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
    • 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
    • B29C66/729—Textile or other fibrous material made from plastics
    • 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
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/836—Moving relative to and tangentially to the parts to be joined, e.g. transversely to the displacement of the parts to be joined, e.g. using a X-Y table
    • 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
    • B31D—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER, NOT PROVIDED FOR IN SUBCLASSES B31B OR B31C
    • B31D1/00—Multiple-step processes for making flat articles ; Making flat articles
    • B31D1/0006—Multiple-step processes for making flat articles ; Making flat articles the articles being coffee filters
    • 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
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F5/00—Attaching together sheets, strips or webs; Reinforcing edges
    • B31F5/008—Attaching together sheets, strips or webs; Reinforcing edges by friction, e.g. obtained ultrasonic vibrations
    • 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
    • B29C2793/00—Shaping techniques involving a cutting or machining operation
    • 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
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2711/00—Use of natural products or their composites, not provided for in groups B29K2601/00 - B29K2709/00, for preformed parts, e.g. for inserts
    • B29K2711/12—Paper, e.g. cardboard
    • B29K2711/126—Impregnated
    • 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
    • B29L2031/14—Filters
    • 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
    • B29L2031/7122—Tea bags
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Packages (AREA)
  • Apparatus For Making Beverages (AREA)

Abstract

The filter bag is intended for brewing tea, coffee etc. During mfr. a preset section of material is cut off from an endless web and is folded into a two-layer configuration by back folding. The two longitudinal edges are welded together. The mfr. starts with uncoated, open-pore filter material. In the region of the longitudinal edges an adhesive is applied in a narrow strip. The two layers of the cut section are then welded together by ultrasound. Pref. open-pore paper is used as filter material.

Description

Die Erfindung bezieht sich auf ein Verfahren zur Herstellung einer Filtertüte aus luft- und flüssigkeitsdurchlässigem Filtermaterial, die zur Aufnahme einer Substanz zur Herstellung von Aufgußgetränken bestimmt ist, bei welchem von einem endlosen Band des Filtermaterials ein Abschnitt mit vorgegebener Länge abgetrennt wird und bei welchem der abgetrennte Abschnitt durch Zurückbiegen zu einem zweilagigen Gebilde gefaltet wird, dessen beide Längskanten miteinander verschweißt werden (EP-PS 0 020 598).The invention relates to a method of manufacture a filter bag made of air and liquid permeable Filter material used to hold a substance Production of infusion drinks is intended, in which of a section with an endless band of filter material predetermined length is cut off and at which the separated section by bending back to a two-layer Form is folded, its two longitudinal edges together are welded (EP-PS 0 020 598).

Filtertüten werden beispielsweise zur Herstellung von Tee verwendet. Auf diesen Anwendungsfall beziehen sich die weiteren Ausführungen, stellvertretend für andere Anwendungsfälle. Für die Zubereitung von Tee in unterschiedlichsten Geschmacksrichtungen sind beispielsweise fertig abgepackte Beutel erhältlich, in denen die entsprechende Tee-Substanz verschlossen ist. An den Beuteln ist ein Bindfaden angebracht, so daß sie in eine Teekanne oder in ein anderes Gefäß eingehängt und wieder aus derselben bzw. demselben entfernt werden können.Filter bags are used, for example, to make tea used. The relate to this application other versions, representative of others Use cases. For the preparation of tea in different flavors are for example pre-packaged bags available in which the appropriate Tea substance is closed. There is a on the bags Twine attached so that it can be in a teapot or in a hooked another vessel in and out of the same or same can be removed.

Es sind auch Filtertüten bekannt, die zur Zubereitung von Tee auf eine Spannvorrichtung mit weiter Öffnung aufgespannt werden, so daß die Tee-Substanz eingefüllt werden kann (DE-PS 28 57 169). Sie werden mittels der als Halter dienenden Spannvorrichtung in eine Teekanne oder ein anderes Gefäß eingebracht und wieder aus derselben bzw. demselben entfernt. Filter bags are also known for the preparation of tea clamped on a clamping device with a wide opening be so that the tea substance can be filled (DE-PS 28 57 169). They are used as a holder Clamping device in a teapot or other container introduced and removed from the same or the same.  

Die aufzuspannenden Filtertüten bestehen ebenso wie die aus der eingangs erwähnten EP-PS 0 020 598 bekannten Filtertüten aus ganzflächig beschichtetem Filtermaterial. Für die Beschichtung wird beispielsweise Polyethylen verwendet. Durch Aufbringen von Wärme und Druck können zwei Lagen dieses Filtermaterials miteinander verschweißt werden. Die Beschichtung des beispielweise aus Papier bestehenden Filtermaterials bedeutet einen Zusatzaufwand, und zwar sowohl bei der Herstellung des Filtermaterials als auch durch das zusätzliche Material selbst. Darüberhinaus sind eine Verschweißung mittels Wärme und Druck erlaubende Materialien nicht ohne weiteres recyclebar. Sie belasten daher die Umwelt.The filter bags to be clamped are made up of as well the filter bags known from EP-0 020 598 mentioned at the outset made of filter material coated all over. For the For example, polyethylene is used for the coating. By Applying heat and pressure can be two layers of this Filter material are welded together. The Coating of paper, for example Filter material means an additional effort, both in the manufacture of the filter material as well as by the additional material itself. Furthermore, one Welding using materials that allow heat and pressure not easily recyclable. Therefore, they pollute the environment.

Der Erfindung liegt die Aufgabe zugrunde, das eingangs geschilderte Verfahren zu vereinfachen und umweltfreundlicher zu gestalten.The invention has for its object that to simplify the described processes and make them more environmentally friendly to design.

Diese Aufgabe wird gemäß der Erfindung dadurch gelöst,According to the invention, this object is achieved by

  • - daß als Ausgangsmaterial ein unbeschichtetes, offenporiges Filtermaterial verwendet wird,- That an uncoated, open-pored filter material is used,
  • - daß im Bereich der beiden Längskanten des Filtermaterials jeweils ein schmaler Streifen eines Haftvermittlers aufgetragen wird und- That in the area of the two longitudinal edges of the filter material each a narrow strip of an adhesion promoter is applied and
  • - daß die beiden Lagen des Abschnitts an den Streifen, an denen der Haftvermittler aufgetragen ist, durch Ultraschall miteinander verschweißt werden.- That the two layers of the section on the strips to whom the bonding agent is applied, by Ultrasonically welded together.

Bei diesem Verfahren wird für die Herstellung der Filtertüten das unbehandelte Grundmaterial ohne Beschichtung eingesetzt. Die Herstellung desselben ist daher vergleichsweise preiswert und es belastet als Abfall nicht die Umwelt. Für das Verschweißen des Filtermaterials wird so wenig zusätzliches Material wie möglich eingesetzt, da nur an den zu verschweißenden Stellen schmale Streifen eines Haftvermittlers aufgetragen werden. Als Haftvermittler kann außerdem ein die Umwelt ebenfalls nicht belastendes lebensmittelechtes Bindemittel, beispielweise ein handelsüblicher Lack, verwendet werden. Schließlich ist der Aufwand an Energie beim Verschweißen des Filtermaterials relativ niedrig, da statt beheizter Schweißkanten eine Ultraschallanlage eingesetzt wird. Das Filtermaterial wird bei der Ultraschall- Verschweißung außerdem so gering erwärmt, daß ein Verbrennen ausgeschlossen werden kann.This process is used to manufacture the filter bags the untreated base material is used without coating. The manufacture of the same is therefore comparatively inexpensive and it does not pollute the environment as waste. For the Welding the filter material is so little additional Material used as possible because only on the narrow spots of an adhesion promoter be applied. As an adhesion promoter, a  Environmentally friendly food safe too Binder, for example a commercially available varnish, is used will. After all, the effort in energy is Welding of the filter material relatively low, because instead heated welding edges used an ultrasound system becomes. The filter material is Welding is also heated so low that it burns can be excluded.

Das Verfahren nach der Erfindung wird anhand der Zeichnungen als Ausführungsbeispiel erläutert.The method according to the invention is illustrated in the drawings explained as an embodiment.

Es zeigen:Show it:

Fig. 1 eine Vorrichtung zur Durchführung des Verfahrens nach der Erfindung in schematischer Darstellung. Fig. 1 shows a device for performing the method according to the invention in a schematic representation.

Fig. 2 einen Abschnitt aus Filtermaterial vor Fertigstellung einer Filtertüte. Fig. 2 shows a section of filter material before the completion of a filter bag.

Fig. 3 bis 6 unterschiedliche Ansichten von Filtertüten. FIG. 3 to 6 show different views of filter bags.

Auf einer Rolle 1 ist eine große Länge von bandförmigem, offenporigem Filtermaterial 2 aufgewickelt. Das Filtermaterial 2 ist beispielweise offenporiges Papier. Es wird in Richtung des Pfeiles 3 von der sich drehenden Rolle 1 abgezogen und durch eine Vorrichtung 4 geführt, in der im Bereich beider Längskanten ein schmaler Streifen 5 bzw. 6 eines Haftvermittlers aufgetragen wird. Die Streifen 5 und 6 sind in Fig. 2 gestrichelt eingezeichnet. Als Haftvermittler wird vorzugsweise ein lebensmittelechtes Bindemittel verwendet, das beispielweise als Lack im Handel erhältlich ist.A large length of band-shaped, open-pore filter material 2 is wound on a roll 1 . The filter material 2 is, for example, open-pore paper. It is pulled off the rotating roller 1 in the direction of the arrow 3 and passed through a device 4 in which a narrow strip 5 or 6 of an adhesion promoter is applied in the region of both longitudinal edges. The strips 5 and 6 are shown in broken lines in FIG. 2. A food-grade binding agent, which is commercially available, for example as a lacquer, is preferably used as the adhesion promoter.

In einer in Abzugsrichtung des Filtermaterials 2 folgenden Schneidvorrichtung 7 werden von dem quasi endlosen Band des Filtermaterials 2 Abschnitte 8 abgetrennt, aus denen jeweils eine Filtertüte durch Falten hergestellt wird. Dazu wird das eine Ende des Abschnitts 8 bis zur Anlage am verbleibenden Teil desselben zweilagig so zurückgebogen, daß die Streifen 5 bzw. 6 des Haftvermittlers aufeinander zu liegen kommen. Das Filtermaterial wird dann an den Streifen 5 und 6 mittels einer Ultraschallanlage 9 verschweißt.In a following in the drawing direction of the filter material 2 cutting device 7 of the filter material be 2 portions 8 separated from the quasi endless band, from each of which a filter bag is produced by folding. For this purpose, one end of section 8 is bent back in two layers until it rests on the remaining part of the section in such a way that strips 5 and 6 of the adhesion promoter come to lie on one another. The filter material is then welded to the strips 5 and 6 by means of an ultrasound system 9 .

Dabei können Filtertüten 10 entsprechend Fig. 3 und 4 hergestellt werden, die eine einseitig überstehende Lasche 11 haben. Sie dient zum vereinfachten Einfüllen der Tee-Substanz. Eine solche Filtertüte 10 kann bei entsprechender Länge ohne besonderen Halter in eine Teekanne eingesetzt werden.Filter bags 10 can be produced according to FIGS. 3 and 4, which have a tab 11 projecting on one side. It serves to simplify the filling of the tea substance. Such a filter bag 10 can be inserted into a teapot with a suitable length without a special holder.

Es können auch Filtertüten 12 hergestellt werden, die entsprechend Fig. 5 und 6 eine Öffnung an einer Stirnseite haben. Diese Filtertüten 12 können auf eine Spannvorrichtung aufgesteckt werden.Filter bags 12 can also be produced which, according to FIGS. 5 and 6, have an opening on one end face. These filter bags 12 can be placed on a clamping device.

Die Streifen 5 und 6 des Haftvermittlers können - wie beschrieben - kontinuierlich auf das Filtermaterial 2 aufgetragen werden. Bei entsprechend präziser Fertigung ist es aber auch möglich, den Haftvermittler zur Erzeugung von Filtertüten 10 (Fig. 3 und 4) nur an den zu verschweißenden Stellen aufzutragen. In allen Fällen ist es grundsätzlich auch möglich, den Haftvermittler erst auf die abgetrennten Abschnitte 8 aufzutragen.The strips 5 and 6 of the adhesion promoter can - as described - be applied continuously to the filter material 2 . With correspondingly precise production, however, it is also possible to apply the adhesion promoter to produce filter bags 10 ( FIGS. 3 and 4) only at the points to be welded. In all cases, it is in principle also possible to first apply the adhesion promoter to the separated sections 8 .

Claims (3)

1. Verfahren zur Herstellung einer Filtertüte aus luft- und flüssigkeitsdurchlässigem Filtermaterial, die zur Aufnahme einer Substanz zur Herstellung von Aufgußgetränken bestimmt ist, bei welchem von einem endlosen Band des Filtermaterials ein Abschnitt mit vorgegebener Länge abgetrennt wird und bei welchem der abgetrennte Abschnitt durch Zurückbiegen zu einem zweilagigen Gebilde gefaltet wird, dessen beide Längskanten miteinander verschweißt werden, dadurch gekennzeichnet,
  • - daß als Ausgangsmaterial ein unbeschichtetes, offenporiges Filtermaterial (2) verwendet wird,
  • - daß im Bereich der beiden Längskanten des Filtermaterials (2) jeweils ein schmaler Streifen (5, 6) eines Haftvermittlers aufgetragen wird und
  • - daß die beiden Lagen des Abschnitts (8) an den Streifen (5, 6), an denen der Haftvermittler aufgetragen ist, durch Ultraschall miteinander verschweißt werden.
1. A method for producing a filter bag made of air- and liquid-permeable filter material, which is intended to contain a substance for the production of infusion beverages, in which a section of a predetermined length is cut off from an endless band of filter material and in which the cut-off section is bent back a two-layer structure is folded, the two longitudinal edges of which are welded together, characterized in that
  • - That an uncoated, open-pore filter material ( 2 ) is used as the starting material,
  • - That in the area of the two longitudinal edges of the filter material ( 2 ) a narrow strip ( 5 , 6 ) of an adhesion promoter is applied and
  • - That the two layers of section ( 8 ) on the strips ( 5 , 6 ), on which the bonding agent is applied, are welded together by ultrasound.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß als Filtermaterial (2) offenporiges Papier verwendet wird.2. The method according to claim 1, characterized in that open-pore paper is used as the filter material ( 2 ). 3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß als Haftvermittler ein lebensmittelechter Lack verwendet wird.3. The method according to claim 1 or 2, characterized in that as an adhesion promoter a food-safe varnish is used.
DE4427955A 1994-08-06 1994-08-06 Method for producing a filter bag Expired - Fee Related DE4427955B4 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE4427955A DE4427955B4 (en) 1994-08-06 1994-08-06 Method for producing a filter bag

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4427955A DE4427955B4 (en) 1994-08-06 1994-08-06 Method for producing a filter bag

Publications (2)

Publication Number Publication Date
DE4427955A1 true DE4427955A1 (en) 1996-02-08
DE4427955B4 DE4427955B4 (en) 2005-05-04

Family

ID=6525134

Family Applications (1)

Application Number Title Priority Date Filing Date
DE4427955A Expired - Fee Related DE4427955B4 (en) 1994-08-06 1994-08-06 Method for producing a filter bag

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DE (1) DE4427955B4 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002040263A1 (en) * 2000-11-17 2002-05-23 Tecnea Engineering S.R.L. Method of sealing at least two portions of two flat bodies
WO2008152498A1 (en) * 2007-06-11 2008-12-18 Ima Flavour S.R.L. Single-lobe filter bag for infusion products

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL185263C (en) * 1977-11-14 1990-03-01 Bentz & Sohn Melitta HOLDER FOR A FILTER BAG FOR PREPARING TEA OR COFFEE.
DK146352C (en) * 1978-11-16 1984-02-27 Vangedal Nielsen Erling FILTER BAG
DE4141969A1 (en) * 1991-12-19 1993-06-24 Knecht Filterwerke Gmbh RING FILTER ELEMENT MADE OF A ZIGZAG FOLDED FILTER RAIL MATERIAL
DE4227744A1 (en) * 1992-08-21 1994-02-24 Knecht Filterwerke Gmbh Zigzag folded filter strip material - has folds stabilised at least on one side by linearly-formed fixation means running in fold direction

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002040263A1 (en) * 2000-11-17 2002-05-23 Tecnea Engineering S.R.L. Method of sealing at least two portions of two flat bodies
WO2008152498A1 (en) * 2007-06-11 2008-12-18 Ima Flavour S.R.L. Single-lobe filter bag for infusion products
US8047360B2 (en) 2007-06-11 2011-11-01 Ima Flavour S.R.L. Single lobe filter bag for infusion products
CN101687593B (en) * 2007-06-11 2012-04-18 Ima香料有限责任公司 Single-lobe filter bag for infusion products

Also Published As

Publication number Publication date
DE4427955B4 (en) 2005-05-04

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