EP0943731A1 - Matière filtrante avec mouillabilité réglable et son procédé de fabrication - Google Patents

Matière filtrante avec mouillabilité réglable et son procédé de fabrication Download PDF

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Publication number
EP0943731A1
EP0943731A1 EP98105114A EP98105114A EP0943731A1 EP 0943731 A1 EP0943731 A1 EP 0943731A1 EP 98105114 A EP98105114 A EP 98105114A EP 98105114 A EP98105114 A EP 98105114A EP 0943731 A1 EP0943731 A1 EP 0943731A1
Authority
EP
European Patent Office
Prior art keywords
filter material
material according
substance
basis weight
cellulose
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
EP98105114A
Other languages
German (de)
English (en)
Other versions
EP0943731B1 (fr
Inventor
Günter Grauer
Yves Le Brech
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.)
PAPCEL - PAPIER und CELLULOSE TECHNOLOGIE und HANDELS-GmbH
Schoeller und Hoesch GmbH
Original Assignee
PAPCEL - PAPIER und CELLULOSE TECHNOLOGIE und HANDELS-GmbH
Schoeller und Hoesch 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 PAPCEL - PAPIER und CELLULOSE TECHNOLOGIE und HANDELS-GmbH, Schoeller und Hoesch GmbH filed Critical PAPCEL - PAPIER und CELLULOSE TECHNOLOGIE und HANDELS-GmbH
Priority to ES98105114T priority Critical patent/ES2159903T3/es
Priority to AT98105114T priority patent/ATE202171T1/de
Priority to EP98105114A priority patent/EP0943731B1/fr
Priority to DE59800843T priority patent/DE59800843D1/de
Publication of EP0943731A1 publication Critical patent/EP0943731A1/fr
Application granted granted Critical
Publication of EP0943731B1 publication Critical patent/EP0943731B1/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
    • 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
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/08—Filter paper

Definitions

  • Filter bags for cold and hot filtration e.g. Tea bags, coffee bags (see also DE 39 02 298), filter bags for flavors, spices and cooking bags e.g. for rice and vegetables; Filter papers for tea and coffee, for those Beverage industry, for medical applications and as well Filtration of oils and emulsions from heat sealable and filter materials that are not heat-sealable.
  • hydrophilic filter papers immediately show a swelling behavior after contact with water that changes affects that the paper absorbs moisture heavily, swelling of the paper fibers begins and itself thereby the number of openings between the fibers and the Size of the openings changes.
  • a disadvantage of this hydrophobization is, however, that the water-repellent fiber property during leaching a teabag made from it a much larger one Takes time than an untreated one conventional pouch.
  • a tea or coffee filter made from such a is made hydrophobic filter material, the Increase the filtering time of the water in the filter so far that a machine infusion there is a risk that the filter overflows.
  • the present invention is therefore based on the object by controlling water wettability and water absorption of the filter material, i.e. through appropriate treatment of the filter material, an interplay between hydrophobic and hydrophilic properties (amphiphilic) of the To achieve filter material, so that a filter material is obtained in which after processing into an infusion bag or avoided the disadvantages described above for a filter become.
  • Another object of the present invention is a Process for producing such a filter material specify.
  • One embodiment of the present invention is the subject thus the filter material according to claim 1. Preferred Embodiments of this filter material are shown in FIGS Subclaims 2 to 13 are shown.
  • Another object of the present invention is a Process for producing such a filter material according to claim 14.
  • the filter material according to the invention which is impregnated with an amphiphilic substance or with a hydrophilic and a hydrophobic substance, expediently has a basis weight of between 10-120 g / m 2 , preferably 12-40 g / m 2 , the filter material not being heat-sealable or heat-sealable can be.
  • the filter material according to the invention has a controlled one Water wettability and water absorption. Under the Term "controlled water wettability and water absorption capacity" it is understood here and below that the Filter material has water wettability and water absorption capacity owns one between those completely hydrophobic filter material (0%) and one hydrophilic filter material (100%). Conveniently the filter material according to the invention has water wettability and water absorption in the range of 10% to 90%, preferably in the range of 10% to 50%.
  • the Water wettability and water absorption capacity can be e.g. using a suction level test, i.e. ever the filter material is more hydrophilic (if the proportion of hydrophilizing agent is larger) the higher the suction height. According to the suction level test was carried out under the conditions according to DIN 53106 (synonymous with ISO 8787).
  • Hydrophobic substances are among others:
  • Styrene-maleic anhydride copolymers styrene-butadiene copolymers, Polystyrene (PS), polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polyvinyl acetate (PVAc), Polyacrylamide, polymethacrylates, polyacrylates, polytetrafluoroethylene (PTFE), polyvinylidene chloride (PVDC), polyvinylidene fluoride (PVDF), silicone resins, terpene resins, ketone resins, Coumarone resins, styrene-acrylic acid copolymers, such as n-butyl acrylate-styrene copolymer, Ethyl cellulose (EC), cellulose acetate and Dimethylpolysiloxanes, preferably styrene-maleic anhydride copolymers, Styrene-butadiene copolymers and styrene-acrylic acid
  • Hydrophilic substances are among others:
  • PEG Polyethylene glycols
  • MC methyl cellulose
  • HPMC hydroxypropyl methyl cellulose
  • HPPC hydroxypropyl cellulose
  • HPC Hydroxypropyl methyl cellulose phthalate
  • PVP polyvinyl pyrrolidone
  • PVA polyvinyl alcohol
  • PEG polyacrylic acids
  • Gelatin alginates and sulfosuccinates, preferably Sulfosuccinates, especially sodium dialkyl sulfosuccinate.
  • Amphiphilic substances are among others:
  • Carboxymethyl cellulose CMC
  • cellulose acetate phthalate CAP
  • Polyacrylates surfactants, e.g. Soaps, ester sulfonates, Fatty alcohol ethoxylates, fatty alcohol ether sulfates, alkylbenzenesulfonates, such as dodecylbenzenesulfonate, alkanesulfonates, Fatty alcohol sulfates, such as lauryl alcohol sulfate, are preferred Dedecylbenzenesulfonate, carboxymethyl cellulose, cellulose acetate phthalate, especially sodium carboxymethyl cellulose.
  • the amount added is for the hydrophobic substances expediently 0.5-20%, preferably 10%, and in the hydrophilic substances expediently 0.01-5%, preferably 0.05%, based on the paper weight.
  • the amount added is in the case of amphiphilic substances expediently 0.1% -3%, preferably 1%.
  • the amount added preferably 0.05% hydrophilic and 10% hydrophobic substances, or 1% amphiphilic substances.
  • a filter material with an amphiphilic substance or with a hydrophobic and one treated hydrophilic substance is produced by the process of producing a filter material with Controlled water wettability and water absorption.
  • a filter material is generally produced in a manner known in the relevant art Application of an aqueous suspension of natural fibers and / or synthetic fibers on a paper machine wire.
  • the heat-sealable, synthetic Fibers deposited on the first layer and by a subsequent one Drying process melted the synthetic fibers, so that it deals with the natural fibers of the first layer connect.
  • the filter material produced according to the invention can be excellent for the production of filters for aqueous hot or Cold filtration, filter bags for drinks or flavors, Cooking bags, filters for medical applications and of Use filters to filter emulsions or oils.
  • the filter material according to the invention can preferably be used for the production of tea bags.
  • Preferred subject Embodiment of the present invention is thus one of the tea bag produced according to the filter material according to the invention.
  • Figure 1 shows a tea bag on the right, whose paper only is equipped hydrophobically and with the infusion upwards floats, with part of the bag not wetted by the water becomes.
  • the left teabag whose paper also hydrophilizes is located in the lower part of the vessel and becomes complete wetted. Through the precise setting of an amphiphilic paper property the tea bag made from it can then e.g. are held in the middle of the vessel, where experience has shown that Temperature is very high and the infusion is the fastest.
  • Figure 2 shows the course of the color intensity development of the Extract when infusing a tea bag as a function of time.
  • Curve 1 shows the course of the color development of a Extract from a tea bag, which is only hydrophobic equipped filter material was manufactured.
  • Curve 2 shows the color development of an extract from a tea bag an additional hydrophilized filter material. It is clear the faster color development (curve 2) within about 2 min. observed with the additionally hydrophilized bag.
  • a tea bag is placed in a beaker of boiling water poured over and the liquid with a magnetic stirrer constant kept moving.
  • the tea is infused by a continuously operating pump through a cell into the spectrophotometer. At a fixed wavelength is then dependent on the Time (X-axis) the spectral absorption of light (Y-axis) of the tea infusion.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filtering Materials (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Laminated Bodies (AREA)
EP98105114A 1998-03-20 1998-03-20 Matière filtrante avec mouillabilité réglable et son procédé de fabrication Expired - Lifetime EP0943731B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
ES98105114T ES2159903T3 (es) 1998-03-20 1998-03-20 Material filtrante humectable de forma regulable y procedimiento para su fabricacion
AT98105114T ATE202171T1 (de) 1998-03-20 1998-03-20 Filtermaterial mit einstellbarer benetzbarkeit und verfahren zu seiner herstellung
EP98105114A EP0943731B1 (fr) 1998-03-20 1998-03-20 Matière filtrante avec mouillabilité réglable et son procédé de fabrication
DE59800843T DE59800843D1 (de) 1998-03-20 1998-03-20 Filtermaterial mit einstellbarer Benetzbarkeit und Verfahren zu seiner Herstellung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP98105114A EP0943731B1 (fr) 1998-03-20 1998-03-20 Matière filtrante avec mouillabilité réglable et son procédé de fabrication

Publications (2)

Publication Number Publication Date
EP0943731A1 true EP0943731A1 (fr) 1999-09-22
EP0943731B1 EP0943731B1 (fr) 2001-06-13

Family

ID=8231631

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98105114A Expired - Lifetime EP0943731B1 (fr) 1998-03-20 1998-03-20 Matière filtrante avec mouillabilité réglable et son procédé de fabrication

Country Status (4)

Country Link
EP (1) EP0943731B1 (fr)
AT (1) ATE202171T1 (fr)
DE (1) DE59800843D1 (fr)
ES (1) ES2159903T3 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002031263A1 (fr) * 2000-10-09 2002-04-18 Dynamic Products Limited Sachet d'infusion a fraicheur amelioree et a perte de particules reduite
EP1215134A1 (fr) * 2000-12-13 2002-06-19 PAPCEL - PAPIER UND CELLULOSE, TECHNOLOGIE UND HANDELS-GmbH Matériau filtrant à propriétés d'infusion améliorées
WO2004067841A1 (fr) * 2003-01-31 2004-08-12 Dynamic Products Limited Fibres traitees en vue de fabriquer des emballages d'infusion a boire a fraicheur amelioree et emballage d'infusion a boire fabrique a partir de ces fibres
US10240294B2 (en) 2013-01-31 2019-03-26 Glatfelter Gernsbach Gmbh Crosslinking/functionalization system for a paper or non-woven web

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7517581B2 (en) 2003-09-26 2009-04-14 Parker-Hannifin Corporation Semipermeable hydrophilic membrane

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1053933A (fr) * 1900-01-01
GB1307637A (en) * 1970-07-28 1973-02-21 Paterson Sons Ltd R Packaging for beverages
EP0011968A1 (fr) * 1978-11-17 1980-06-11 Unilever Plc Composition détergente particulaire contenue dans un sachet fermé, fait d'un matériau en feuille
US4289580A (en) * 1979-11-13 1981-09-15 The Dexter Corporation Heat seal fibrous web and method of its manufacture
US4713285A (en) * 1986-05-02 1987-12-15 Frederick G. Crane, Jr. High temperature filter material
EP0287910A2 (fr) * 1987-04-23 1988-10-26 Jacobs Suchard GmbH Filtre, en particulier filtre à café ainsi que son procédé de fabrication
EP0632163A1 (fr) * 1993-07-01 1995-01-04 The Dexter Corporation Procédé de fabrication de feuilles poreuses utilisées pour des emballages d'infusion, et feuilles ainsi produites
US5595659A (en) * 1995-02-17 1997-01-21 Lydall, Inc. Filter material for removing chlorine from cold water in preparing a human-consumable beverage

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1053933A (fr) * 1900-01-01
GB1307637A (en) * 1970-07-28 1973-02-21 Paterson Sons Ltd R Packaging for beverages
EP0011968A1 (fr) * 1978-11-17 1980-06-11 Unilever Plc Composition détergente particulaire contenue dans un sachet fermé, fait d'un matériau en feuille
US4289580A (en) * 1979-11-13 1981-09-15 The Dexter Corporation Heat seal fibrous web and method of its manufacture
US4713285A (en) * 1986-05-02 1987-12-15 Frederick G. Crane, Jr. High temperature filter material
EP0287910A2 (fr) * 1987-04-23 1988-10-26 Jacobs Suchard GmbH Filtre, en particulier filtre à café ainsi que son procédé de fabrication
EP0632163A1 (fr) * 1993-07-01 1995-01-04 The Dexter Corporation Procédé de fabrication de feuilles poreuses utilisées pour des emballages d'infusion, et feuilles ainsi produites
US5595659A (en) * 1995-02-17 1997-01-21 Lydall, Inc. Filter material for removing chlorine from cold water in preparing a human-consumable beverage

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002031263A1 (fr) * 2000-10-09 2002-04-18 Dynamic Products Limited Sachet d'infusion a fraicheur amelioree et a perte de particules reduite
EP1215134A1 (fr) * 2000-12-13 2002-06-19 PAPCEL - PAPIER UND CELLULOSE, TECHNOLOGIE UND HANDELS-GmbH Matériau filtrant à propriétés d'infusion améliorées
WO2004067841A1 (fr) * 2003-01-31 2004-08-12 Dynamic Products Limited Fibres traitees en vue de fabriquer des emballages d'infusion a boire a fraicheur amelioree et emballage d'infusion a boire fabrique a partir de ces fibres
US10240294B2 (en) 2013-01-31 2019-03-26 Glatfelter Gernsbach Gmbh Crosslinking/functionalization system for a paper or non-woven web

Also Published As

Publication number Publication date
ES2159903T3 (es) 2001-10-16
DE59800843D1 (de) 2001-07-19
ATE202171T1 (de) 2001-06-15
EP0943731B1 (fr) 2001-06-13

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