A papermaking method using waste tea stems as raw materials

A technology for tea stalks and raw materials, which is applied in the field of papermaking using waste tea stalks as raw materials, can solve the problems of shortage and low quality, and achieve the effects of high paper strength, fine fiber distribution and good interweaving performance.

Inactive Publication Date: 2019-01-18
FUJIAN GREEN GOLD BIOTECH CO LTD
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  • Description
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  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a papermaking method using discarded tea stalks as raw material in order to solve the problem of low quality and shortage of existing papermaking fiber raw materials. The specific steps are as follows:

Method used

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  • A papermaking method using waste tea stems as raw materials

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Embodiment 1

[0021] The papermaking method of the present invention is that waste tea stalk is raw material, concrete steps are as follows:

[0022] Step 1. Preprocessing

[0023] Select tea stems for washing, drying, chopping and dedusting;

[0024] Step 2. Cooking and pressing

[0025] The tea stem in step 1 is passed through a water solvent (liquid-to-material mass ratio 40:1), and extracted at a temperature of 80°C for 35 minutes to obtain the tea polyphenols therein, which is then used; then NaOH and anthraquinone, NaOH are added to the tea stem The dosage is 20%, the dosage of anthraquinone is 3‰, and the liquid ratio is 1:3. (the amount of sodium hydroxide and anthraquinone is relative to the quality of the dry tea stalks, and the liquid ratio is the quality of the dry tea stalks: the quality of water). After fully stirring and mixing evenly, steaming is carried out, and then the cooking waste liquid is separated by dehydration and pressing to obtain Coarse slurry (through this s...

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Abstract

The invention relates to a papermaking method taking waste tea stems as raw materials. The method comprises the specific steps of, firstly, performing pretreatment on selected tea stems through cleaning, drying, shredding and dedusting; secondly, cooking and squeezing the tea stems obtained from the first step, and extracting tea polyphenol contained in the tea stem in aqueous solvent for standby; thirdly, preparing pulp by grinding coarse pulp squeezed in the second step through a high-concentration disc mill, performing pulp screening treatment in a pulp screening machine and then performing pulp screening treatment on screen residues. The papermaking method taking the waste tea stems as the raw materials achieves reasonable application of the waste tea stems and provides a new material source for the papermaking industry; the content of lignin of the tea stems is higher than that of common straw materials, the morphologic length-width ratio of fiber can reach to 74-90, and fiber is dense in distribution and good in interweaving performance, so that the tea stems can be high in papermaking strength and can serve as an ideal papermaking material.

Description

technical field [0001] The invention relates to the technical field of papermaking, in particular to a papermaking method using waste tea stems as raw materials. Background technique [0002] my country is a big tea producing country. Our total tea output, planting area and total output value are all in the first place in the world, and it is increasing by 10% every year. In addition to drinking tea, tea beverages, tea health products, tea food, etc. have gradually formed a scale and produced considerable economic benefits. The rapid development of my country's tea also promotes the rapid development of my country's economy. In 2014, my country's total tea output reached 2.09 million tons, which doubled compared with ten years ago. And tea stalks are picked out as waste in the tea processing and production process. According to statistics, the production of tea stalk waste in the tea production and processing process will account for more than 20% of the total proportion of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21F9/00D21H11/12
CPCD21F9/00D21H11/12
Inventor 岳金权张阳阳岳欣赵银铃郑丁源
Owner FUJIAN GREEN GOLD BIOTECH CO LTD
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