Light-weight green non-heat-seal type tea leaf filter paper and preparation method thereof

A non-heat-sealable, tea filter paper technology, applied in chemical instruments and methods, filter paper, separation methods, etc., can solve the problems of shortage of papermaking raw materials, low paper strength, high cost, etc., to improve market competitiveness, paper quality Uniform softness, saving packaging costs

Active Publication Date: 2020-03-27
ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Not only is the cost expensive, the strength of the paper is low, but also the papermaking process and the addition of additives have caused some pollution to the environment, and there is a shortage of papermaking raw materials in my country. We should not blindly use traditional wood pulp, but should look for new high-quality fiber raw materials.

Method used

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  • Light-weight green non-heat-seal type tea leaf filter paper and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A method for preparing lightweight green non-heat-sealable tea filter paper, comprising the steps of:

[0021] (1) Beating: Three fiber pulps are beaten respectively, the concentration of the bark pulp is 5%, and the conical refiner beats until the degree of beating is 45°SR; the concentration of the full chlorine-free bleached coniferous wood pulp is 4%, and the double disc refiner beats The controlled beating degree is 42°SR; the concentration of viscose fiber pulp is 0.6%, and the volt type beater is beaten until the beating degree is 15°SR. The beaten pulp is mixed according to the mass ratio, and treated with a leveling refiner for 30s.

[0022] The said bark fiber is prepared by chemical thermo-mechanical method, the bark is first mechanically rubbed to remove the black bark on the surface to obtain the white bark, which is cut into small sections of 20 mm to 30 mm; the white bark is pretreated with biological enzymes for 8 hours , washed; then 4% NaOH and 2% H 2...

Embodiment 2

[0031] A method for preparing lightweight green non-heat-sealable tea filter paper, comprising the steps of:

[0032] (1) Beating: Three kinds of fiber pulp are beaten respectively, the concentration of the bark pulp is 4%, and the conical refiner beats until the degree of beating is 45°SR; the concentration of the full chlorine-free bleached coniferous wood pulp is 5%, and the double disc refiner beats The controlled beating degree is 42°SR; the concentration of viscose fiber pulp is 0.8%, and the beating degree is 15°SR with a volt type beater.

[0033] The said bark fiber is prepared by chemical thermo-mechanical method, the bark is first mechanically rubbed to remove the black bark on the surface to obtain the white bark, which is cut into small sections of 20 mm to 30 mm; the white bark is pretreated with biological enzymes for 8 hours , washed; then 4% NaOH and 2% H 2 o 2 Treat at 80°C for 60-80 minutes, and finally use a twin-screw press to make pulp, with a screw spe...

Embodiment 3

[0042] A method for preparing lightweight green non-heat-sealable tea filter paper, comprising the steps of:

[0043] (1) Beating: Three kinds of fiber pulp are beaten separately, the concentration of the bark pulp is 3%, and the conical refiner beats until the degree of beating is 45°SR; the concentration of the full chlorine-free bleached coniferous wood pulp is 6%, and the double disc refiner beats the pulp The controlled beating degree is 42°SR; the concentration of viscose fiber pulp is 1.0%, and the beating degree is 15°SR with a volt type beater.

[0044] The said bark fiber is prepared by chemical thermo-mechanical method, the bark is first mechanically rubbed to remove the black bark on the surface to obtain the white bark, which is cut into small sections of 20 mm to 30 mm; the white bark is pretreated with biological enzymes for 8 hours , washed; then 4% NaOH and 2% H 2 o 2 Treat at 80°C for 60-80 minutes, and finally use a twin-screw press to make pulp, with a sc...

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Abstract

The invention relates to the field of papermaking, in particular to non-heat-seal type tea leaf filter paper. The filter paper is prepared by mixing paper mulberry bark pulp, bleached softwood pulp and viscose acetal fibers for papermaking, green natural polymer assistants are selected as chemical assistants added into the pulp, and the filter paper has the characteristics of complete natural circulation and biological decomposition. The invention also discloses a preparation method of the tea leaf filter paper. The preparation method comprises the following steps: (1) pulping; (2) preparing pulp; (3) forming on a net; (4) squeezing; (5) drying; and (6) slitting the roll paper. The tea leaf filter paper prepared by the preparation method has good dry and wet strength, uniformity and softness and high air permeability, is beneficial to permeation of tea fragrance, is light in weight, can save packaging cost for users, and has higher market competitiveness.

Description

technical field [0001] The invention relates to a method for making tea filter paper, in particular to a lightweight green non-heat-sealable tea filter paper and a preparation method thereof. Background technique [0002] Teabags are very popular in European and American countries because of their convenient and hygienic drinking, quick dissolution of active ingredients in the tea leaves, and accurate quantification when drinking. More than 80% of the tea leaves in Canada, Italy, Holland, France and other countries are consumed in the form of teabags, and the UK and the U.S. have also reached about 80%. my country's teabag production started in the 1960s, with an annual output of about 30,000 tons of teabags, accounting for about 5% of the country's total tea production, and domestic consumption of teabags accounts for about 2% of the total tea sales. Tea raw materials, packaging materials and teabag packaging machines are the three elements of teabag production, and packag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/08D21H11/08D21H13/08D21H17/29D21H17/15D21H17/32D21F11/02D21H21/14D21H21/18D21H21/20B01D39/14
CPCD21H27/08D21H11/08D21H13/08D21H17/29D21H17/15D21H17/32D21F11/02D21H21/14D21H21/18D21H21/20B01D39/14B01D2239/0407B01D2239/10
Inventor 翟睿刘全鑫胡志军李国毅周怡恒郭大亮
Owner ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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