EP0380127B1 - Heisssiegelfähiges Teebeutelpapier und Vefahren zu dessen Herstellung - Google Patents

Heisssiegelfähiges Teebeutelpapier und Vefahren zu dessen Herstellung Download PDF

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Publication number
EP0380127B1
EP0380127B1 EP90101601A EP90101601A EP0380127B1 EP 0380127 B1 EP0380127 B1 EP 0380127B1 EP 90101601 A EP90101601 A EP 90101601A EP 90101601 A EP90101601 A EP 90101601A EP 0380127 B1 EP0380127 B1 EP 0380127B1
Authority
EP
European Patent Office
Prior art keywords
paper
phase
heat
tea bag
tea
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP90101601A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0380127A2 (de
EP0380127A3 (de
Inventor
Günter Dipl.-Phys. Heinrich
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.)
UNICON PAPIER- und KUNSTSTOFFHANDELSGESELLSCHAFT MBH
Original Assignee
UNICON PAPIER- und KUNSTSTOFFHANDELSGESELLSCHAFT MBH
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 UNICON PAPIER- und KUNSTSTOFFHANDELSGESELLSCHAFT MBH filed Critical UNICON PAPIER- und KUNSTSTOFFHANDELSGESELLSCHAFT MBH
Priority to AT90101601T priority Critical patent/ATE98720T1/de
Publication of EP0380127A2 publication Critical patent/EP0380127A2/de
Publication of EP0380127A3 publication Critical patent/EP0380127A3/de
Application granted granted Critical
Publication of EP0380127B1 publication Critical patent/EP0380127B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
    • D21H13/10—Organic non-cellulose fibres
    • D21H13/12—Organic non-cellulose fibres from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H13/16—Polyalkenylalcohols; Polyalkenylethers; Polyalkenylesters
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
    • D21F11/02—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines of the Fourdrinier type
    • D21F11/04—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines of the Fourdrinier type paper or board consisting on two or more layers
    • 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
    • D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
    • D21H11/12—Pulp from non-woody plants or crops, e.g. cotton, flax, straw, bagasse
    • 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
    • D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
    • D21H13/10—Organic non-cellulose fibres
    • 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
    • D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
    • D21H13/10—Organic non-cellulose fibres
    • D21H13/12—Organic non-cellulose fibres from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H13/14—Polyalkenes, e.g. polystyrene polyethylene

Definitions

  • the invention relates to a teabag paper consisting of a first phase of natural fibers and a second phase of heat-sealing synthetic fibers.
  • the invention also relates to a method for producing such a teabag paper and its use for producing a teabag.
  • Heat-sealable teabag papers which have a basis weight of 16 g / m2 and up and which can be processed into teabags on high-speed packaging machines at up to 4000 units per minute.
  • These tea bag papers usually consist of about 75% natural fibers and about 25% heat-sealing synthetic materials.
  • DE-PS 1 546 330 describes a method in which the thermoplastic fibers and the non-heat-sealable fibers are deposited together in an aqueous suspension onto the screen in a paper machine. Due to the property of the lower density of the thermoplastic fibers made of polypropylene, a different content of polypropylene fibers is deposited on the two surfaces of the paper formed. The above-mentioned disadvantages of paper that can be sealed on one side also apply there. This process is described for a paper of 17 g / m2.
  • the object of the invention is achieved in that in one step an aqueous suspension of the natural fibers with a consistency of less than 0.1% is applied to a paper machine screen to form a first layer, that in a second step the heat-sealable synthetic fibers are deposited on the first layer in such a way that they penetrate the first layer, the penetration of the layers being stopped by the drainage, and that the synthetic fibers are subjected to a subsequent drying process are melted in such a way that they envelop the natural fibers during re-consolidation.
  • the penetration of the two layers can be particularly enhanced by sharp drainage.
  • Well-known natural fibers such as hemp, manila, jute, sisal and other long-fiber wood pulp are used for the first layer.
  • Polyethylene, polypropylene or copolymers of vinyl chloride and vinyl acetate are preferably used for the second layer of heat-sealable fibers.
  • Fig. 1b shows how through the described sharp drainage of the two layers, in particular the second layer with the fibers 2, a penetration of the two layers is achieved so that the synthetic fibers 2 get between the natural fibers 1 and from the top of the first layer down to the bottom between the natural fibers 1.
  • Fig. 2 shows the basic structure of a paper machine, as it can be used to produce a tea bag paper according to the invention.
  • a suspension “A” is formed from the ground natural fibers and water, and also a suspension “B” from the partially ground synthetic fibers and water.
  • the material 9 now formed from natural fibers and synthetic fibers is removed from the sieve and fed to drying.
  • This drying can be done in different ways, e.g. by contact drying or through-flow drying.
  • the elements 10 only give a rough schematic indication of corresponding drying elements.
  • the heating of the two-layer fiber material causes the synthetic fibers 2 in the mixed layer 9 to melt.
  • the synthetic fibers at least partially envelop the natural fibers, so that the tea bag paper rolled up on a roll 11 can be heat-sealed on both sides.
  • a tea bag paper according to the invention was compared with a conventional heat-sealable tea bag paper (sample B) and a conventional non-heat-sealable tea bag paper (sample C).
  • table A B C Basis weight [g / m2] 12.2 16.5 12.3 Time of first color development [sec.] 8.9 11.8 9.7 Tea diffusion factor (density x air resistance) 1.71 3.59 1.86
  • Pattern A is the subject of the invention, for pattern B around conventional known heat sealable tea bag papers, for pattern C around non-heat-sealable teabag papers.
  • the tea diffusion factor is a calculated quantity.
  • the lowest bulk density and high porosity (low air resistance) determine the speed at which tea leaching takes place from a bag. So if the product from bulk density and air resistance is as small as possible, the prerequisites for good tea leaching or tea diffusion are given.
  • the bulk density is the known quotient of the basis weight and the thickness.
  • the air resistance is specified in seconds and is determined by measuring the time in which a fixed volume of air flows through a defined area of the paper to be tested (see also Gurley measurement).

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Packages (AREA)
  • Tea And Coffee (AREA)
  • Apparatus For Making Beverages (AREA)
  • Laminated Bodies (AREA)
  • Making Paper Articles (AREA)
EP90101601A 1989-01-26 1990-01-26 Heisssiegelfähiges Teebeutelpapier und Vefahren zu dessen Herstellung Expired - Lifetime EP0380127B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90101601T ATE98720T1 (de) 1989-01-26 1990-01-26 Heisssiegelfaehiges teebeutelpapier und vefahren zu dessen herstellung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3902298A DE3902298C1 (enrdf_load_stackoverflow) 1989-01-26 1989-01-26
DE3902298 1989-01-26

Publications (3)

Publication Number Publication Date
EP0380127A2 EP0380127A2 (de) 1990-08-01
EP0380127A3 EP0380127A3 (de) 1991-08-21
EP0380127B1 true EP0380127B1 (de) 1993-12-15

Family

ID=6372857

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90101601A Expired - Lifetime EP0380127B1 (de) 1989-01-26 1990-01-26 Heisssiegelfähiges Teebeutelpapier und Vefahren zu dessen Herstellung

Country Status (4)

Country Link
EP (1) EP0380127B1 (enrdf_load_stackoverflow)
AT (1) ATE98720T1 (enrdf_load_stackoverflow)
DE (2) DE3902298C1 (enrdf_load_stackoverflow)
ES (1) ES2048329T3 (enrdf_load_stackoverflow)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6784126B2 (en) 1990-12-21 2004-08-31 Kimberly-Clark Worldwide, Inc. High pulp content nonwoven composite fabric
US5573841A (en) * 1994-04-04 1996-11-12 Kimberly-Clark Corporation Hydraulically entangled, autogenous-bonding, nonwoven composite fabric
DE19719807A1 (de) * 1997-05-13 1998-11-19 Bayer Ag Heißsiegelfähiges Filtermaterial mit biologisch abbaubaren Polymeren
DE10206924B4 (de) 2002-02-19 2005-12-15 Papierfabrik Schoeller & Hoesch Gmbh & Co. Kg Heisssiegelfähige Filtermaterialien
DE10231403B3 (de) * 2002-07-11 2004-02-05 Papierfabrik Schoeller & Hoesch Gmbh & Co. Kg Heisssiegelfähiges Filtermaterial
GB2403719A (en) 2003-07-07 2005-01-12 Reckitt Benckiser Nv Water-softening method
DE102018107944B3 (de) * 2018-04-04 2019-06-19 Delfortgroup Ag Verbessertes filterpapier, herstellungsverfahren und daraus gefertigter beutel

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1294064A (en) * 1970-09-23 1972-10-25 Dexter Corp Heat-sealant particles and web materials containing same
GB1411776A (en) * 1972-11-21 1975-10-29 Mitsubishi Paper Mills Ltd Method for producing a non-woven fabric
US4289580A (en) * 1979-11-13 1981-09-15 The Dexter Corporation Heat seal fibrous web and method of its manufacture

Also Published As

Publication number Publication date
DE59003814D1 (de) 1994-01-27
ES2048329T3 (es) 1994-03-16
EP0380127A2 (de) 1990-08-01
ATE98720T1 (de) 1994-01-15
DE3902298C1 (enrdf_load_stackoverflow) 1990-08-23
EP0380127A3 (de) 1991-08-21

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