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Method for producing degradable seedling raising paper container by utilizing fir leftover materials and branch wood pulp

A technology for leftovers and seedling paper, applied in pulp beating method, paper making, application, etc., can solve problems such as limited source of raw materials for seedling paper containers, and achieve the effects of being beneficial to ecological environmental protection and market economy, broadening sources, and alleviating supply shortages

Active Publication Date: 2021-03-12
江西中竹生物质科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the technical defects of the prior art, and provides a method for producing degradable seedling-raising paper containers using fir leftovers and branch wood pulp, so as to solve the problem of seedling-raising paper containers. The technical problem that the raw material source of the container is relatively limited

Method used

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  • Method for producing degradable seedling raising paper container by utilizing fir leftover materials and branch wood pulp
  • Method for producing degradable seedling raising paper container by utilizing fir leftover materials and branch wood pulp
  • Method for producing degradable seedling raising paper container by utilizing fir leftover materials and branch wood pulp

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] like figure 1 , figure 2 , shown in table 1: choose cheap, source the Chinese fir leftovers and branches of wood processing plants with wide range of sources as the basic raw material of fir pulp; enter the cooking pot after crushing and screening the qualified Chinese fir chips of 10-50mm; before cooking, according to the additives The ratio of water weight to 1:4 is mixed with the washing liquid after pulp washing and fir chips, of which the water content of fir chips accounts for 46%; gradually add steam to the cooking pot to the set temperature, and the temperature change process and time Including: increasing the temperature from 70°C to 120°C by adding the amount of steam, and the time used is 70 minutes; from 120°C to 130°C, the time used is 35 minutes; from 130°C to 168°C, the time used is 90 minutes; holding time 60 minutes; after heat preservation, it is sprayed into the spray pot; after steaming, the Chinese fir pulp is pumped to the pulp washer for vacuum ...

Embodiment 2

[0070] like figure 1 , figure 2 , shown in table 1: choose cheap, source the Chinese fir leftovers and branches of wood processing plants with wide range of sources as the basic raw material of fir pulp; enter the cooking pot after crushing and screening the qualified Chinese fir chips of 10-50mm; before cooking, according to the additives The ratio of water weight to 1:4 is mixed with the washing liquid after pulp washing and fir chips, of which the water content of fir chips accounts for 46%; gradually add steam to the cooking pot to the set temperature, and the temperature change process and time Including: increasing the temperature from 70°C to 120°C by adding the amount of steam, and the time used is 70 minutes; from 120°C to 130°C, the time used is 35 minutes; from 130°C to 168°C, the time used is 90 minutes; holding time 60 minutes; after heat preservation, it is sprayed into the spray pot; after steaming, the Chinese fir pulp is pumped to the pulp washer for vacuum ...

Embodiment 3

[0073] like figure 1 , figure 2 , shown in table 1: choose cheap, source the Chinese fir leftovers and branches of wood processing plants with wide range of sources as the basic raw material of fir pulp; enter the cooking pot after crushing and screening the qualified Chinese fir chips of 10-50mm; before cooking, according to the additives The ratio of water weight to 1:4 is mixed with the washing liquid after pulp washing and fir chips, of which the water content of fir chips accounts for 46%; gradually add steam to the cooking pot to the set temperature, and the temperature change process and time Including: increasing the temperature from 70°C to 120°C by adding the amount of steam, and the time used is 70 minutes; from 120°C to 130°C, the time used is 35 minutes; from 130°C to 168°C, the time used is 90 minutes; holding time 60 minutes; after heat preservation, it is sprayed into the spray pot; after steaming, the Chinese fir pulp is pumped to the pulp washer for vacuum ...

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Abstract

The invention provides a method for producing a degradable seedling raising paper container by utilizing fir leftover materials and branch wood pulp. The method comprises the following steps of: pulping, concentrating, medium-concentration pulping, pulp mixing, concentration mixing, forming, drying, hot-pressing shaping and packaging. 100% of fir fiber pulp is subjected to 5%-6% medium-concentration disc mill pulping and pulp mixing, the pH value is adjusted to 6.5-7.5, and water is added to adjust the concentration to 0.8%-1.2%, the thickened pulp is pumped into a forming machine for wet press forming, a wet press formed container is dried through a drying machine, and then the container is sent into a hot press shaping machine for shaping; according to the obtained seedling raising papercontainer, the material is quantified at 250-260g / m<2>, the dryness is 7%-8%, the stiffness of a cup body is 3.5-3.8N, and the compression resistance is 300-350N; and no leakage occurs after soakingin water at 60DEG C for 30min. According to the invention, the fir leftover materials and the branch wood fibers are used as raw materials, so that the raw material source of the seedling raising paper container is expanded, the situation of tension supply of raw wood is relieved, and the performance of the seedling raising paper container is improved to a certain extent.

Description

technical field [0001] The invention relates to the technical field of pulping and papermaking, in particular to a method for producing degradable seedling-raising paper containers by using fir leftovers and branch wood pulp. Background technique [0002] Seedling container refers to the carrier used to accommodate soil, nutrient solution and other cultivation substrates in seedling activities, mainly including seedling trays, seedling cups and other products. Most of the seedling trays and seedling cups currently on the market are plastic products, and large-scale and long-term use will cause great harm to the environment. A small number of seedling trays and seedling cups are made of paper materials, of which waste paper pulp is used as raw material for poor quality ones, but waste paper pulp contains a large number of microorganisms harmful to humans, animals and plants; good quality ones are made of virgin wood pulp. However, it will consume a large amount of native woo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21B1/06D21C7/00D21D1/02D21J3/00A01G9/029
CPCD21D1/02D21J3/00D21B1/06D21C7/00A01G9/029Y02W90/10
Inventor 刘洁王安睿
Owner 江西中竹生物质科技有限公司
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