WO2004072375A1 - Method for manufacturing tea-bag sheet - Google Patents

Method for manufacturing tea-bag sheet Download PDF

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Publication number
WO2004072375A1
WO2004072375A1 PCT/KR2003/000595 KR0300595W WO2004072375A1 WO 2004072375 A1 WO2004072375 A1 WO 2004072375A1 KR 0300595 W KR0300595 W KR 0300595W WO 2004072375 A1 WO2004072375 A1 WO 2004072375A1
Authority
WO
WIPO (PCT)
Prior art keywords
paper
stuff
fibers
base paper
relative
Prior art date
Application number
PCT/KR2003/000595
Other languages
French (fr)
Inventor
Kang-Jin Lee
Original Assignee
Papertec Co Ltd E
Choi Jung-Hun
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 Papertec Co Ltd E, Choi Jung-Hun filed Critical Papertec Co Ltd E
Priority to AU2003215956A priority Critical patent/AU2003215956A1/en
Publication of WO2004072375A1 publication Critical patent/WO2004072375A1/en

Links

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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
    • B01D39/18—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being cellulose or derivatives thereof
    • 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
    • D21H11/14—Secondary 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
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/10—Packing paper
    • 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
    • D21H5/00—Special paper or cardboard not otherwise provided for
    • D21H5/12—Special paper or cardboard not otherwise provided for characterised by the use of special fibrous materials
    • D21H5/14—Special paper or cardboard not otherwise provided for characterised by the use of special fibrous materials of cellulose fibres only
    • 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
    • D21H11/02—Chemical or chemomechanical or chemothermomechanical pulp
    • D21H11/04—Kraft or sulfate pulp
    • 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
    • D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
    • D21H25/02—Chemical or biochemical treatment
    • 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

  • the present invention relates to a method for manufacturing a tea-bag sheet to contain green tea leaves or black tea leaves, and more particularly to a method for manufacturing a tea-bag sheet comprising treatments of porous paper including swelling, surface coating, impregnating, laminating and degenerating.
  • the tea-bag sheet should be excellent in tensile, wet and surface strengths and stiffness, strong in water resistance and heat resistance, hygienically stable and free delamination of surface paper fiber and powder. Also, it does not contain harmful substances such as fluorescent substances, environmental hormones, and the like and have a plurality of pores for a better freeness.
  • tea-bag sheets are formed by mixing expensive rayon, yam pulp, or chemical fibers in order to maintain a high wet strength and heat resistance and thus have economical and environmental problems.
  • a method for manufacturing a tea- bag sheet comprising the steps of: combining 80 wt% to 50 wt% of short fibers (Laub Holtz Bleached Kraft Pulp: LBKP) and 20 wt% to 50 wt% of long fibers (Nadel Holtz Bleached Kraft Pulp: NBKP) to prepare a perfect stuff of pure wooden fibers; beating the paper stuff to a freeness of 20 to 40°SR according to an application of a final product; adding a filler including calcium bicarbonate (CaC0 3 ), Talc, Clay or a mixture thereof; adding 1 wt% to 5 wt% of a wet strength additive relative to the pulp; adding
  • 0.05 wt% to 3 wt% of a paper stuff dispersant relative to the wooden fiber adjusting a pore size of a paper by adjusting a wire of a paper machine to 60 to 80 mesh; reacting a base paper with sulfuric acid for several seconds; and neutralizing and washing the treated base paper, followed by drying.
  • the wet strength additive is added in an amount of 1 wt% to 5 wt% and includes any one selected from the group consisting of epoxidated polyamide resins, melamine resins, polyamidoamine-epichloro PAAE) hydrin, urea-and formaldehyde-based resins, polyethyleneimine and mixtures thereof.
  • the paper stuff dispersant is added in an amount of 0.05 wt% to 3 wt% relative to the wooden fiber and includes any one selected from the group consisting of anionic polyacrylamides, polyethylenoxides, cationic starch, acethyl Starch, carboxymethycellulose, methycellulose and mixtures thereof.
  • 10 g/m 2 to 40g/m 2 of the base paper is treated with sulfuring acid in a concentration of 40 v% to 70v% and the treatment is performed by a single- or multiple impregnation, swelling and degeneration process.
  • Fig. 1 is a flow chart illustrating the method for manufacturing a tea- bag sheet according to the present invention.
  • the method for manufacturing a tea-bag sheet comprises the steps of combining short fibers (LBKP) with long fibers (NBKP) to prepare a perfect stuff of paper (S101); beating the stuff to a freeness of 20 to 40°SR according to an application of a final product (tea-bag sheet) (SI 02); adding a prescribed filler (SI 03); adding 1 wt% to 5 wt% of a wet strength additive relative to the pulp to reinforce the wet strength of the fibers (S104); adding 0.05 wt% to 3 wt% of a prescribed paper stuff dispersant relative to the wooden fiber (SI 05); adjusting a pore size of a paper by adjusting a wire of a paper machine to a proper mesh (S106); reacting 10g/m 2 to 40g/m 2 of a base paper with sulfuric acid in a concentration of 40v% to 70v% for several seconds (S107); and neutralizing and washing the treated base paper
  • the filler may be calcium bicarbonate (CaCOs), Talc, Clay or a mixture thereof.
  • the wet strength additive can be any one selected from the group consisting of epoxidated polyamide resins, melamine resins, polyamidoamine-epichloro (PAAE) hydrin, urea-and formaldehyde-based resins, polyethyleneimine and mixtures thereof;
  • the paper stuff dispersant is added in an amount of 0.05 wt% to 3 wt% relative to the wooden fibers and can be any one selected from the group consisting of anionic polyacrylamides, polyethylenoxides, cationic starch, acethyl Starch, carboxymethycellulose, methycellulose and mixtures thereof.
  • the wire is adjusted to 60 to 80 mesh.
  • the base paper is subjected to a single- or multiple impregnation, swelling and degeneration process.
  • the tea-bag sheet according to the present invention prepared by the above-described method satisfies requirements of a tea-bag sheet by using a porous base paper comprising pure wooden pulp and also can provide a environmentally friendly and hygienic product with a high wet strength.
  • the method for manufacturing a tea-bag sheet according to the present invention can provide a environmentally friendly and hygienic product with a high wet strength by using a porous base paper comprising pure wooden pulp.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Paper (AREA)

Abstract

The present invention relates to a method for manufacturing a tea-bag sheet to contain green tea leaves. The method comprises the steps of: combining 80 wt% to 50 wt% of short fibers with 20 wt% to 50 wt% of long fibers to prepare a perfect stuff of pure wooden fibers; beating the paper stuff to a freeness of 20 to 40¡ÆSR according to an application of a final product; adding a filler including calcium bicarbonate, Talc, Clay or a mixture thereof; adding 1 wt% to 5 wt% of a wet strength additive relative to the pulp; adding 0.05 wt% to 3 wt% of a paper stuff dispersant relative to the wooden fibers; adjusting a pore size of a paper by adjusting a wire of a paper machine to 60 to 80 mesh; reacting a base paper with sulfuric acid for several seconds; and neutralizing and washing the paper, followed by drying.

Description

METHOD FOR MANUFACTURING TEA-BAG SHEET
Technical Field
The present invention relates to a method for manufacturing a tea-bag sheet to contain green tea leaves or black tea leaves, and more particularly to a method for manufacturing a tea-bag sheet comprising treatments of porous paper including swelling, surface coating, impregnating, laminating and degenerating.
Background Art
In general, the tea-bag sheet should be excellent in tensile, wet and surface strengths and stiffness, strong in water resistance and heat resistance, hygienically stable and free delamination of surface paper fiber and powder. Also, it does not contain harmful substances such as fluorescent substances, environmental hormones, and the like and have a plurality of pores for a better freeness.
However, conventional tea-bag sheets are formed by mixing expensive rayon, yam pulp, or chemical fibers in order to maintain a high wet strength and heat resistance and thus have economical and environmental problems.
Disclosure of the Invention
Therefore, it is an object of the present invention to provide a method for manufacturing a tea-bag sheet which satisfies requirements of a tea-bag sheet and also can produce a environmentally friendly and hygienic product with a high wet strength, by using a porous base paper comprising pure wooden pulp.
In accordance with the present invention, the above and other objects can be accomplished by the provision of a method for manufacturing a tea- bag sheet comprising the steps of: combining 80 wt% to 50 wt% of short fibers (Laub Holtz Bleached Kraft Pulp: LBKP) and 20 wt% to 50 wt% of long fibers (Nadel Holtz Bleached Kraft Pulp: NBKP) to prepare a perfect stuff of pure wooden fibers; beating the paper stuff to a freeness of 20 to 40°SR according to an application of a final product; adding a filler including calcium bicarbonate (CaC03), Talc, Clay or a mixture thereof; adding 1 wt% to 5 wt% of a wet strength additive relative to the pulp; adding
0.05 wt% to 3 wt% of a paper stuff dispersant relative to the wooden fiber; adjusting a pore size of a paper by adjusting a wire of a paper machine to 60 to 80 mesh; reacting a base paper with sulfuric acid for several seconds; and neutralizing and washing the treated base paper, followed by drying.
The wet strength additive is added in an amount of 1 wt% to 5 wt% and includes any one selected from the group consisting of epoxidated polyamide resins, melamine resins, polyamidoamine-epichloro PAAE) hydrin, urea-and formaldehyde-based resins, polyethyleneimine and mixtures thereof.
The paper stuff dispersant is added in an amount of 0.05 wt% to 3 wt% relative to the wooden fiber and includes any one selected from the group consisting of anionic polyacrylamides, polyethylenoxides, cationic starch, acethyl Starch, carboxymethycellulose, methycellulose and mixtures thereof.
In the step to react the prepared base paper with sulfuric acid for several seconds, 10 g/m2 to 40g/m2 of the base paper is treated with sulfuring acid in a concentration of 40 v% to 70v% and the treatment is performed by a single- or multiple impregnation, swelling and degeneration process.
Brief Description of the Drawings
The above and other objects, features and other advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawing, in which:
Fig. 1 is a flow chart illustrating the method for manufacturing a tea- bag sheet according to the present invention.
Best Mode for Carrying out the Invention
Now, a preferred embodiment of the present invention will be described in detail with reference to the drawing.
As shown in Fig. 1, the method for manufacturing a tea-bag sheet according to the present invention comprises the steps of combining short fibers (LBKP) with long fibers (NBKP) to prepare a perfect stuff of paper (S101); beating the stuff to a freeness of 20 to 40°SR according to an application of a final product (tea-bag sheet) (SI 02); adding a prescribed filler (SI 03); adding 1 wt% to 5 wt% of a wet strength additive relative to the pulp to reinforce the wet strength of the fibers (S104); adding 0.05 wt% to 3 wt% of a prescribed paper stuff dispersant relative to the wooden fiber (SI 05); adjusting a pore size of a paper by adjusting a wire of a paper machine to a proper mesh (S106); reacting 10g/m2 to 40g/m2 of a base paper with sulfuric acid in a concentration of 40v% to 70v% for several seconds (S107); and neutralizing and washing the treated base paper (SI 08), followed by drying (SI 09).
In the step to combining the short fibers (LBKP) with the long fibers (NBKP) to prepare a paper stuff of pure wooden fibers (SI 01), 20 wt% to 50 wt% of the long fibers is combined with 80 wt% to 50 wt% of the short fibers according to the needed paper strength.
In the step to add a filler (S103), the filler may be calcium bicarbonate (CaCOs), Talc, Clay or a mixture thereof.
In the step to add 1 wt% to 5 wt% of a wet strength additive relative to the pulp to reinforce the wet strength of the fibers (SI 04), the wet strength additive can be any one selected from the group consisting of epoxidated polyamide resins, melamine resins, polyamidoamine-epichloro (PAAE) hydrin, urea-and formaldehyde-based resins, polyethyleneimine and mixtures thereof; In the step to add 0.05 wt% to 3 wt% of a prescribed paper stuff dispersant relative to the wooden fiber (SI 05), the paper stuff dispersant is added in an amount of 0.05 wt% to 3 wt% relative to the wooden fibers and can be any one selected from the group consisting of anionic polyacrylamides, polyethylenoxides, cationic starch, acethyl Starch, carboxymethycellulose, methycellulose and mixtures thereof.
In the step to adjust a pore size of a paper by adjusting a wire of a paper machine to a proper mesh (SI 06), the wire is adjusted to 60 to 80 mesh.
In the step to react 10g/m2 to 40g/m2 of a base paper with sulfuric acid in a concentration of 40v% to 70v% for several seconds (SI 07), the base paper is subjected to a single- or multiple impregnation, swelling and degeneration process.
The tea-bag sheet according to the present invention prepared by the above-described method satisfies requirements of a tea-bag sheet by using a porous base paper comprising pure wooden pulp and also can provide a environmentally friendly and hygienic product with a high wet strength.
Industrial Applicability
As described above, the method for manufacturing a tea-bag sheet according to the present invention can provide a environmentally friendly and hygienic product with a high wet strength by using a porous base paper comprising pure wooden pulp.

Claims

1. A method for manufacturing a tea-bag sheet comprising the steps of: preparing combining 80 wt% to 50 wt% of short fibers (Laub Holtz Bleached Kraft Pulp: LBKP) with 20 wt% to 50 wt% of long fibers (Nadel Holtz Bleached Kraft Pulp: NBKP) to prepare a perfect stuff of pure wooden fibers (S101); beating the paper stuff to a freeness of 20 to 40°SR according to an application of a final product (SI 02); adding a filler including calcium bicarbonate (CaC03), Talc, Clay or a mixture thereof (S 103); adding 1 wt% to 5 wt% of a wet strength additive relative to the pulp (S104); adding 0.05 wt% to 3 wt% of a paper stuff dispersant relative to the wooden fibers (SI 05); adjusting a pore size of a paper by adjusting a wire of a paper machine to 60 to 80 mesh (SI 06); reacting a base paper with sulfuric acid for several seconds (SI 07); and neutralizing and washing the treated base paper (SI 08), followed by drying (SI 09).
2. The method according to claim 1, wherein the wet strength additive is added in an amount of 1 wt% to 5 wt% and includes any one selected from the group consisting of epoxidated polyamide resins, melamine resins, polyamidoamine-epichloro (PAAE) hydrin, urea-and formaldehyde-based resins, polyethyleneimine and mixtures thereof; and the paper stuff dispersant is added in an amount of 0.05 wt% to 3 wt% relative to the wooden fibers and includes any one selected from the group consisting of anio ic polyacrylamides, polyethylenoxides, cationic starch, acethyl Starch, carboxymethycellulose, methycellulose and mixtures thereof.
3. The method according to claim 1, wherein the step to react the prepared base paper with sulfuric acid for several seconds is performed by treating 10 g/m2 to 40g/m2 of the base paper with sulfuring acid in a concentration of 40 v% to 70v% and the treatment includes a single- or multiple impregnation, swelling and degeneration process.
PCT/KR2003/000595 2003-02-12 2003-03-26 Method for manufacturing tea-bag sheet WO2004072375A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003215956A AU2003215956A1 (en) 2003-02-12 2003-03-26 Method for manufacturing tea-bag sheet

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2003-0008872 2003-02-12
KR10-2003-0008872A KR100496798B1 (en) 2003-02-12 2003-02-12 Method of manufacturing a tea-bag sheet

Publications (1)

Publication Number Publication Date
WO2004072375A1 true WO2004072375A1 (en) 2004-08-26

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KR (1) KR100496798B1 (en)
AU (1) AU2003215956A1 (en)
WO (1) WO2004072375A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103774504A (en) * 2013-12-28 2014-05-07 杭州泛林科技有限公司 Preparation method of functional packing material
CN106758443A (en) * 2016-12-09 2017-05-31 安徽农业大学 A kind of ginkgo leaf edible packing paper of nontoxic high flavones content and preparation method thereof

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012011625A1 (en) * 2010-07-21 2012-01-26 Kim Hae-Gon Teabag paper containing green laver and method for manufacturing same
CN106012654A (en) * 2016-06-11 2016-10-12 苏州思创源博电子科技有限公司 Preparation method for high-quality paper pulp

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5551898A (en) * 1978-09-30 1980-04-15 Asahi Chemical Ind Parchment paper with excellent wet dimension stability
JPS6014830A (en) * 1983-07-07 1985-01-25 ユニチカ株式会社 Synthetic paper for coffee or tea bag
JPS6075700A (en) * 1983-09-30 1985-04-30 旭化成株式会社 Heat sealable parchment paper having air permeability
EP0656224B1 (en) * 1993-12-01 1997-10-08 PAPCEL - PAPIER UND CELLULOSE, TECHNOLOGIE UND HANDELS-GmbH Filter material
KR0153412B1 (en) * 1994-12-30 1998-12-01 정보영 Cellulose pulp and synthetic pulp blended paper for wrapping foods and manufacturing method thereof
KR0153073B1 (en) * 1995-08-23 1998-12-01 하태준 Manufacturing method of cellulose pulp and synthetic pulp blended paper for wrapping foods
KR20020055742A (en) * 2000-12-29 2002-07-10 민태영 A method for preparing paper improving dimensional stability

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5551898A (en) * 1978-09-30 1980-04-15 Asahi Chemical Ind Parchment paper with excellent wet dimension stability
JPS6014830A (en) * 1983-07-07 1985-01-25 ユニチカ株式会社 Synthetic paper for coffee or tea bag
JPS6075700A (en) * 1983-09-30 1985-04-30 旭化成株式会社 Heat sealable parchment paper having air permeability
EP0656224B1 (en) * 1993-12-01 1997-10-08 PAPCEL - PAPIER UND CELLULOSE, TECHNOLOGIE UND HANDELS-GmbH Filter material
KR0153412B1 (en) * 1994-12-30 1998-12-01 정보영 Cellulose pulp and synthetic pulp blended paper for wrapping foods and manufacturing method thereof
KR0153073B1 (en) * 1995-08-23 1998-12-01 하태준 Manufacturing method of cellulose pulp and synthetic pulp blended paper for wrapping foods
KR20020055742A (en) * 2000-12-29 2002-07-10 민태영 A method for preparing paper improving dimensional stability

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103774504A (en) * 2013-12-28 2014-05-07 杭州泛林科技有限公司 Preparation method of functional packing material
CN103774504B (en) * 2013-12-28 2015-10-28 杭州泛林科技有限公司 A kind of preparation method of functional packaging materials
CN106758443A (en) * 2016-12-09 2017-05-31 安徽农业大学 A kind of ginkgo leaf edible packing paper of nontoxic high flavones content and preparation method thereof

Also Published As

Publication number Publication date
KR20040072398A (en) 2004-08-18
AU2003215956A1 (en) 2004-09-06
KR100496798B1 (en) 2005-06-22

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