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Method for producing degradable mulching film paper by utilizing fir leftover materials and branch material pulp

A technology for degrading plastic film and leftovers, which is applied in pulp beating methods, natural cellulose pulp/paper, papermaking, etc., can solve problems such as the limited source of degradable plastic film paper raw materials, and achieve the goal of being conducive to coordinated development, smooth and beautiful appearance, beneficial to The effect of ecological environment protection and market economy

Pending Publication Date: 2021-03-09
江西中竹生物质科技有限公司
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  • 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 mulch paper by using fir leftovers and branch wood pulp, so as to solve the technical problem that the source of raw materials for degradable mulch paper is relatively limited

Method used

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  • Method for producing degradable mulching film paper by utilizing fir leftover materials and branch material pulp
  • Method for producing degradable mulching film paper by utilizing fir leftover materials and branch material pulp
  • Method for producing degradable mulching film paper by utilizing fir leftover materials and branch material pulp

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Experimental program
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Effect test

Embodiment 1

[0068] Such as 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 vacu...

Embodiment 2

[0071] Such as 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 vacu...

Embodiment 3

[0074] Such as 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 60min; after heat preservation, it is sprayed into the blowing pot; the steamed Chinese fir pulp is pumped to the washing machine for vacuum wash...

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Abstract

The invention provides a method for producing degradable mulching film paper by utilizing fir leftover materials and branch material pulp. The method comprises the following steps of: pulping, concentrating, pulping at high concentration, feeding seasonings, removing sand, forming on a net, squeezing, drying, coiling, rewinding and packaging, wherein 100% fir fiber pulp is pulped at high concentration of 22%, and then pulped by a medium-concentration disc mill, the net concentration is set to be 0.18-0.3%, the the net pH value is 6.5-7.5, after forming on a net, squeezing is performed througha four-roller three-pressing area until the dryness is 47-49%, the paper quantity of the obtained mulching film paper is 50-60 g / m<2>, the paper dryness is 8-9%, the air permeability is 30-45 [mu]m / Pa.s, the longitudinal tensile index is 38-42 N.m / g, the transverse tensile index is 22-28 N.m / g, the water absorption value is 30-45 g / m<2>, and the paper tightness is 0.38-0.43 g / m<3>. According to the invention, fir leftover materials and branch material fibers are used as raw materials, so that the raw material source of the mulching film paper is expanded, the situation of tension supply of rawwood is relieved, and the performance of the mulching film paper 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 mulch paper by using fir leftovers and branch wood pulp. Background technique [0002] Plastic film mulching cultivation is an excellent agricultural production-increasing technology. Since plastic film can effectively control soil temperature and humidity, reduce water and nutrient loss, and prevent weed production, it can create a favorable local growth environment for crops. However, conventional mulches generally use polymer materials, which are difficult to degrade in soil. In response to this problem, researchers in the prior art have developed various degradable mulches, and paper mulch (also known as mulch paper or plant fiber mulch) is one of them. The mulch paper is made of plant fibers, which can be decomposed by microorganisms in the soil, and the decomposition products can be used as organic fertilizers to improve so...

Claims

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Application Information

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IPC IPC(8): D21D1/02D21H11/00D21F11/00
CPCD21H11/00D21D1/02D21F11/00
Inventor 刘洁王安睿
Owner 江西中竹生物质科技有限公司
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