CN115852722A - Method for producing corrugated base paper by adding waste vinasse pulp - Google Patents
Method for producing corrugated base paper by adding waste vinasse pulp Download PDFInfo
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- CN115852722A CN115852722A CN202211473748.4A CN202211473748A CN115852722A CN 115852722 A CN115852722 A CN 115852722A CN 202211473748 A CN202211473748 A CN 202211473748A CN 115852722 A CN115852722 A CN 115852722A
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- 239000002699 waste material Substances 0.000 title claims abstract description 44
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 28
- 239000010893 paper waste Substances 0.000 claims abstract description 40
- 229920001131 Pulp (paper) Polymers 0.000 claims abstract description 24
- 239000000839 emulsion Substances 0.000 claims abstract description 21
- 229920001909 styrene-acrylic polymer Polymers 0.000 claims abstract description 21
- 239000004952 Polyamide Substances 0.000 claims abstract description 20
- 229920002472 Starch Polymers 0.000 claims abstract description 20
- 125000002091 cationic group Chemical group 0.000 claims abstract description 20
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 20
- 229920002647 polyamide Polymers 0.000 claims abstract description 20
- 229920000768 polyamine Polymers 0.000 claims abstract description 20
- 238000004537 pulping Methods 0.000 claims abstract description 20
- 239000011347 resin Substances 0.000 claims abstract description 20
- 229920005989 resin Polymers 0.000 claims abstract description 20
- 239000008107 starch Substances 0.000 claims abstract description 20
- 235000019698 starch Nutrition 0.000 claims abstract description 20
- 238000004513 sizing Methods 0.000 claims abstract description 17
- 239000004458 spent grain Substances 0.000 claims abstract description 14
- LRWZZZWJMFNZIK-UHFFFAOYSA-N 2-chloro-3-methyloxirane Chemical compound CC1OC1Cl LRWZZZWJMFNZIK-UHFFFAOYSA-N 0.000 claims abstract description 10
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000002791 soaking Methods 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 52
- 239000004744 fabric Substances 0.000 claims description 48
- 238000003825 pressing Methods 0.000 claims description 42
- 238000010521 absorption reaction Methods 0.000 claims description 19
- 239000002002 slurry Substances 0.000 claims description 16
- 238000010009 beating Methods 0.000 claims description 14
- 238000001035 drying Methods 0.000 claims description 14
- 239000004033 plastic Substances 0.000 claims description 7
- 238000011002 quantification Methods 0.000 claims description 7
- 238000005096 rolling process Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 3
- 239000002994 raw material Substances 0.000 abstract description 11
- 235000013339 cereals Nutrition 0.000 description 11
- 238000002156 mixing Methods 0.000 description 6
- 238000005303 weighing Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000010903 husk Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 235000014692 zinc oxide Nutrition 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
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Abstract
The invention relates to the technical field of corrugated base paper production, and particularly discloses a method for producing corrugated base paper by adding spent grain pulp, which comprises the steps of pulping the prepared white spirit spent grain pulp, balancing moisture, and measuring the moisture content for later use; soaking, defibering and pulping the waste paper to measure the moisture for later use; preparing cationic starch, polyamide polyamine epichlorohydrin resin and the like for later use; the invention adopts white spirit waste vinasse pulp and waste paper pulp to produce the corrugated base paper, the white spirit waste vinasse pulp is used for replacing the waste paper pulp to produce the corrugated base paper, the cost of the existing raw materials is reduced, waste resources are fully utilized, the problem of shortage of the raw materials is solved, cationic starch is added to serve as a dry strength agent, polyamide polyamine epoxy chloropropane resin is added to serve as a wet strength agent, styrene-acrylic emulsion is adopted for surface sizing, the produced corrugated base paper reaches the first-class product, and the quality reaches the standard.
Description
Technical Field
The invention relates to the technical field of pulping and papermaking, in particular to a method for producing corrugated base paper by adding waste vinasse pulp.
Background
The existing corrugated raw paper is produced by more waste paper pulp. The waste paper pulp is the most main pulp in the pulping and papermaking production and consumption in China, and the main papermaking raw material of the packaging paper such as corrugated base paper is the waste paper pulp. However, with the banning of the policy of importing solid wastes comprehensively in China and the banning of the import of waste paper pulp, paper making enterprises in China gradually improve the recycling of the waste paper pulp in China. In recent years, corrugated medium paper in China has almost no export and is almost entirely used in China, and the consumption of the corrugated medium paper in China still has the situation of short supply and short demand, so that the import quantity of the corrugated medium paper is increased year by year. Under the conditions of insufficient raw materials and increasing consumption, corrugated raw paper in the pulping and papermaking industry in China is not only subjected to improvement and adjustment of production processes and production equipment, but also needs to find new papermaking raw materials.
Chinese white spirit is large and concentrated in vinasse, and if the white spirit is not treated in time, the white spirit is rotten, wastes resources and pollutes the environment. However, the spent grains have complex components and high water content, and are difficult to store and use, and fermentation fillers such as rice husks and the like are not easy to use, so that the utilization of the spent grains of the white spirit still has certain difficulties, but also has considerable development room.
The discarded residue is used as a papermaking raw material to be applied to producing corrugated paper and bobbin paper, and application tests show that the product has better hardness, stiffness, waterproofness and the like than the product produced by using all waste paper. The detection proves that the quality of the product meets the national relevant standard requirements, and the market popularization proves that the product completely meets the requirements. The waste residue is utilized to produce corrugated paper and bobbin paper, which not only has short flow and low cost, but also further improves the product quality.
In the prior art, the corrugated medium is usually produced from virgin fiber pulp and waste paper pulp, for example, in the regenerated high-strength corrugated medium and the production method thereof disclosed in the prior patent publication No. CN103321088B, the medium is made from waste paper pulp and pulp residue pulp. Or in the preparation method of the high-strength corrugated base paper disclosed in the prior patent publication No. CN110700005B, the corrugated base paper is prepared by mixing waste paper mixed pulp and broken paper pulp. There is no method for producing corrugated base paper by adding white spirit waste lees pulp into waste paper.
In order to reduce environmental pollution and realize full utilization of resources, a mode for treating waste lees resources is found, raw materials capable of replacing waste paper papermaking corrugated base paper are found for the pulping and papermaking industry, and the problems of waste pollution and waste of the waste lees resources and shortage of the papermaking resources of the corrugated base paper are solved. The invention provides a method for manufacturing corrugated base paper by adding white spirit waste lees pulp.
Disclosure of Invention
The invention aims to provide a method for producing corrugated base paper by adding spent grain pulp, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a method for producing corrugated medium by adding spent grain pulp comprises the following steps:
step one, pulping the prepared distilled grain pulp of the white spirit, balancing water, and measuring the water content for later use;
step two, soaking, defibering and pulping the waste paper to measure the moisture for later use;
step three, preparing cationic starch with the concentration of 1% -4% for later use;
step four, preparing polyamide polyamine epichlorohydrin resin with the concentration of 0.5-2% for later use;
fifthly, preparing styrene-acrylic emulsions with different concentrations for later use;
step six, after the waste vinasse pulp and the waste paper pulp are weighed according to a certain proportion, pouring the pulp into a fluffer for fluffing;
seventhly, pouring the defibered slurry into a plastic cup or a beaker after defibering, adding polyamide polyamine epoxy chloropropane resin with the concentration of 1% while stirring, standing for 1 minute, and removing paper from the pulp;
step eight, opening the rapid paper former to make paper, then automatically stopping the rapid paper former, opening the paper making barrel, covering paper making cloth and a blanket on the formed paper, rolling back and forth by using a press roll to remove part of water, then taking down the wet paper together with the paper making cloth, covering the paper making cloth on the other surface of the wet paper, then placing the wet paper between the two blankets, and then pressing by using a presser;
step nine, opening a presser to press wet paper sheets, blankets and papermaking cloths;
placing the formed paper pattern of the paper-making cloth clamp on a rapid paper sheet dryer for drying, taking out the paper pattern after the paper sheet is dried, removing the paper-making cloth on two sides, and placing the paper-making cloth in a sealing bag;
step eleven, performing surface sizing on the paper after papermaking, performing surface sizing on the paper by using 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9% and 1% of styrene-acrylic emulsion, and drying to obtain corrugated base paper;
and step twelve, carrying out constant temperature and constant humidity treatment on the paper pattern of the corrugated base paper, and measuring the quantification, the fracture length, the ring crush index, the water absorption, the tightness and the water absorption of the paper.
In one alternative: and in the sixth step, the slurry is poured into a fluffing cup of a fluffer, cationic starch is added, clear water with the volume of 1/3-1/2 of the volume of the fluffing cup is added, the fluffing speed is set to 10000 revolutions, and the fluffer is started until fluffing is finished.
In one alternative: and in the step eight, opening the water source and the vacuum pump power supply while opening the quick paper former, setting the quick paper former to be automatic, closing the paper making barrel of the quick paper former, starting the quick paper former, pouring the pulp of the defibering cup into the quick paper former when the water level reaches a first red line, and then waiting for the automatic stop of the quick paper former.
In one alternative: and in the ninth step, the paper pattern and the blanket are placed between an upper pressing plate and a lower pressing plate of a presser, the presser is started, the formed paper sheet is pressed for a specified time under a set pressure, and after the pressing is finished, the lower pressing plate of the presser is put down, and the blanket and the paper pattern are taken out.
In one alternative: and in the step twelve, the mixture is placed for more than 4 hours under the condition of constant temperature and humidity treatment.
In one alternative: the proportion of the waste lees pulp to the waste paper pulp is 2.
In one alternative: the beating degree of the waste vinasse pulp is 50-90 SR degrees, and the beating degree of the waste paper pulp is 50-90 SR degrees.
In one alternative: in the fifth step, the concentration of the styrene-acrylic emulsion is 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9% and 1%.
In one alternative: the cationic starch is a dry strength agent, and the polyamide polyamine epichlorohydrin resin is a wet strength agent.
In one alternative: in the eleventh step, the concentration of the styrene-acrylic emulsion is 0.6%, 0.7%, 0.8%, 0.9% and 1%.
Compared with the prior art, the invention has the beneficial effects that:
the invention adopts white spirit waste vinasse pulp and waste paper pulp to produce the corrugated base paper, the white spirit waste vinasse pulp is used for replacing the waste paper pulp to produce the corrugated base paper, the cost of the existing raw materials is reduced, waste resources are fully utilized, the problem of shortage of the raw materials is solved, cationic starch is added to be used as a dry strength agent, polyamide polyamine epoxy chloropropane resin is added to be used as a wet strength agent, styrene-acrylic emulsion is adopted for surface sizing, the produced corrugated base paper reaches the first-class product, and the quality reaches the standard.
Detailed Description
Example 1
In this embodiment, a method for producing corrugated medium by adding spent grain pulp includes the following steps:
step one, preparing the waste distilled grain pulp of the white spirit, wherein the beating degree of the waste distilled grain pulp of the white spirit is 87 DEG SR, and after beating, balancing moisture to measure the moisture content for later use;
step two, soaking, defibering and pulping the waste paper to determine the moisture for later use, wherein the pulping degree of the waste paper is 60 DEG SR;
step three, preparing cationic starch with the concentration of 2% as a dry strength agent for later use;
step four, preparing polyamide polyamine epichlorohydrin resin with the concentration of 1% as a wet strength agent for later use;
fifthly, preparing styrene-acrylic emulsion with the concentration of 1% for later use;
step six, mixing the waste vinasse pulp and the waste paper pulp according to the ratio of 2: weighing 8, pouring the slurry into a fluffer for fluffing, adding cationic starch, adding clear water with the volume of 1/3-1/2 of the volume of the fluffer cup, setting the fluffer rotation speed to 10000 revolutions, and starting the fluffer until fluffing is finished;
seventhly, after the defibering is finished, pouring the defibered slurry into a plastic cup or a beaker, adding the polyamide polyamine epoxy chloropropane resin with the concentration of 1 percent while stirring, standing for 1 minute, and removing paper from the pulp;
step eight, opening a rapid paper sheet former to carry out paper sheet making, simultaneously opening a water source and a vacuum pump power supply, setting the rapid paper sheet former to be automatic, closing a paper making barrel of the rapid paper sheet former, starting the rapid paper sheet former, pouring the slurry of a defibering cup into the rapid paper sheet former when the water level reaches a first red line, then waiting for the automatic stop of the rapid paper sheet former, opening the paper making barrel, covering a paper making cloth and a blanket on the formed paper, rolling back and forth by a press roller to remove part of water, then taking down the wet paper sheet together with the paper making cloth, covering the paper making cloth on the other surface of the wet paper sheet, then placing the wet paper sheet between the two blankets, and squeezing by a squeezer;
step nine, opening a presser, pressing the wet paper sheet, the blanket and the papermaking cloth, putting the paper pattern and the blanket between an upper pressing plate and a lower pressing plate of the presser, starting the presser, pressing the formed paper sheet for a specified time under a set pressure, putting down the lower pressing plate of the presser after pressing is finished, and taking out the blanket and the paper pattern;
tenthly, placing the formed paper pattern wrapped by the papermaking cloth in a quick paper sheet dryer for drying, taking out the paper pattern after the paper sheet is dried, removing the papermaking cloth on two sides, and placing the papermaking cloth in a sealing bag;
step eleven, performing surface sizing on the paper made by the paper making machine, performing surface sizing by using styrene-acrylic emulsion with the concentration of 1%, and drying to obtain corrugated base paper;
and step twelve, placing the paper pattern of the corrugated base paper for more than 4 hours under the condition of constant temperature and constant humidity, and measuring the quantification, the fracture length, the ring crush index, the water absorption, the tightness and the water absorption of the paper.
In this embodiment, the measured quality indexes of the corrugating medium are: basis weight 100g/m2, firmness: 0.50g/cm3; ring pressure index 5.7 N.m/g; and (3) fracture length: 3.85Km; water absorption: 97g/m2; moisture content: 8 percent.
Example 2
The difference from the embodiment 1 is that the method for producing the corrugated base paper by adding the waste lees pulp comprises the following steps:
step one, preparing the waste distilled grain pulp of the white spirit, wherein the beating degree of the waste distilled grain pulp of the white spirit is 87 DEG SR, and after beating, balancing moisture to measure the moisture content for later use;
step two, soaking, defibering and pulping the waste paper to determine the moisture for later use, wherein the pulping degree of the waste paper is 60 DEG SR;
step three, preparing cationic starch with the concentration of 2% as a dry strength agent for later use;
step four, preparing polyamide polyamine epichlorohydrin resin with the concentration of 1% as a wet strength agent for later use;
fifthly, preparing styrene-acrylic emulsion with the concentration of 0.9% for later use;
step six, mixing the waste vinasse pulp and the waste paper pulp according to the ratio of 2: weighing 8, pouring the slurry into a fluffer for fluffing, adding cationic starch, adding clear water with the volume of 1/3-1/2 of the volume of the fluffer cup, setting the fluffer rotation speed to 10000 revolutions, and starting the fluffer until fluffing is finished;
seventhly, pouring the defibered slurry into a plastic cup or a beaker after defibering, adding polyamide polyamine epoxy chloropropane resin with the concentration of 1% while stirring, standing for 1 minute, and removing paper from the pulp;
step eight, opening a rapid paper sheet former to carry out paper sheet making, simultaneously opening a water source and a vacuum pump power supply, setting the rapid paper sheet former to be automatic, closing a paper making barrel of the rapid paper sheet former, starting the rapid paper sheet former, pouring the pulp of a fluffing cup into the rapid paper sheet former when the water level reaches a first red line, then waiting for the automatic stop of the rapid paper sheet former, opening the paper making barrel, covering a paper making cloth and a blanket on the formed paper, rolling back and forth by a compression roller to remove partial water, then taking down the wet paper sheet together with the paper making cloth, covering the paper making cloth on the other surface of the wet paper sheet, then putting the wet paper sheet between the two blankets, and squeezing by a squeezer;
step nine, opening a presser, pressing the wet paper sheet, the blanket and the papermaking cloth, putting the paper pattern and the blanket between an upper pressing plate and a lower pressing plate of the presser, starting the presser, pressing the formed paper sheet for a specified time under a set pressure, putting down the lower pressing plate of the presser after pressing is finished, and taking out the blanket and the paper pattern;
tenthly, placing the formed paper pattern wrapped by the papermaking cloth in a quick paper sheet dryer for drying, taking out the paper pattern after the paper sheet is dried, removing the papermaking cloth on two sides, and placing the papermaking cloth in a sealing bag;
step eleven, performing surface sizing on the paper made by the paper making machine, performing surface sizing by using a styrene-acrylic emulsion with the concentration of 0.9%, and drying to obtain corrugated base paper;
and step twelve, placing the paper pattern of the corrugated base paper for more than 4 hours under the condition of constant temperature and constant humidity, and measuring the quantification, the fracture length, the ring crush index, the water absorption, the tightness and the water absorption of the paper.
In this embodiment, the measured quality indexes of the corrugating medium are: basis weight 100g/m2, firmness: 0.48g/cm3; ring pressure index 5.7 N.m/g; and (3) fracture length: 3.69km; water absorption: 101g/m2; moisture content: 8 percent.
Example 3
The method for producing the corrugated base paper by adding the waste lees pulp is different from the embodiment 1 and comprises the following steps:
step one, preparing the waste distilled grain pulp of the white spirit, wherein the beating degree of the waste distilled grain pulp of the white spirit is 87 DEG SR, and after beating, balancing moisture to measure the moisture content for later use;
step two, soaking, defibering and pulping the waste paper to determine the moisture for later use, wherein the pulping degree of the waste paper is 60 DEG SR;
step three, preparing cationic starch with the concentration of 2% as a dry strength agent for later use;
step four, preparing polyamide polyamine epichlorohydrin resin with the concentration of 1% as a wet strength agent for later use;
fifthly, preparing styrene-acrylic emulsion with the concentration of 0.8% for later use;
step six, mixing the waste vinasse pulp and the waste paper pulp according to the ratio of 2: weighing 8, pouring the slurry into a fluffer for fluffing, adding cationic starch, adding clear water with the volume of 1/3-1/2 of the volume of the fluffer cup, setting the fluffer rotation speed to 10000 revolutions, and starting the fluffer until fluffing is finished;
seventhly, pouring the defibered slurry into a plastic cup or a beaker after defibering, adding polyamide polyamine epoxy chloropropane resin with the concentration of 1% while stirring, standing for 1 minute, and removing paper from the pulp;
step eight, opening a rapid paper sheet former to carry out paper sheet making, simultaneously opening a water source and a vacuum pump power supply, setting the rapid paper sheet former to be automatic, closing a paper making barrel of the rapid paper sheet former, starting the rapid paper sheet former, pouring the slurry of a defibering cup into the rapid paper sheet former when the water level reaches a first red line, then waiting for the automatic stop of the rapid paper sheet former, opening the paper making barrel, covering a paper making cloth and a blanket on the formed paper, rolling back and forth by a press roller to remove part of water, then taking down the wet paper sheet together with the paper making cloth, covering the paper making cloth on the other surface of the wet paper sheet, then placing the wet paper sheet between the two blankets, and squeezing by a squeezer;
step nine, opening a presser, pressing the wet paper sheet, the blanket and the papermaking cloth, putting the paper pattern and the blanket between an upper pressing plate and a lower pressing plate of the presser, starting the presser, pressing the formed paper sheet for a specified time under a set pressure, putting down the lower pressing plate of the presser after pressing is finished, and taking out the blanket and the paper pattern;
tenthly, placing the formed paper pattern wrapped by the papermaking cloth in a quick paper sheet dryer for drying, taking out the paper pattern after the paper sheet is dried, removing the papermaking cloth on two sides, and placing the papermaking cloth in a sealing bag;
step eleven, performing surface sizing on the paper made by the paper making machine, performing surface sizing by using a styrene-acrylic emulsion with the concentration of 0.8%, and drying to obtain corrugated base paper;
and step twelve, placing the paper pattern of the corrugated base paper for more than 4 hours under the condition of constant temperature and constant humidity, and measuring the quantification, the fracture length, the ring crush index, the water absorption, the tightness and the water absorption of the paper.
In this embodiment, the measured quality indexes of the corrugating medium are: quantitative 100g/m2, firmness: 0.48g/cm3; ring pressure index 6.0 N.m/g; and (3) fracture length: 3.60km; water absorption: 105g/m2; moisture content: 8 percent.
Example 4
The difference from the embodiment 1 is that the method for producing the corrugated base paper by adding the waste lees pulp comprises the following steps:
step one, preparing waste distilled grain pulp of white spirit, wherein the beating degree of the waste distilled grain pulp of white spirit is 87 DEG SR, and after beating, balancing moisture to measure the moisture content for later use;
step two, soaking, defibering and pulping the waste paper to determine the moisture for later use, wherein the pulping degree of the waste paper is 60 DEG SR;
step three, preparing cationic starch with the concentration of 2% as a dry strength agent for later use;
step four, preparing polyamide polyamine epichlorohydrin resin with the concentration of 1% as a wet strength agent for later use;
fifthly, preparing styrene-acrylic emulsion with the concentration of 0.7% for later use;
step six, mixing the waste vinasse pulp and the waste paper pulp according to the ratio of 2: weighing 8, pouring the slurry into a fluffer for fluffing, adding cationic starch, adding clear water with the volume of 1/3-1/2 of the volume of the fluffer cup, setting the fluffing rotation speed to 10000 revolutions, and starting the fluffer until fluffing is finished;
seventhly, pouring the defibered slurry into a plastic cup or a beaker after defibering, adding polyamide polyamine epoxy chloropropane resin with the concentration of 1% while stirring, standing for 1 minute, and removing paper from the pulp;
step eight, opening a rapid paper sheet former to carry out paper sheet making, simultaneously opening a water source and a vacuum pump power supply, setting the rapid paper sheet former to be automatic, closing a paper making barrel of the rapid paper sheet former, starting the rapid paper sheet former, pouring the slurry of a defibering cup into the rapid paper sheet former when the water level reaches a first red line, then waiting for the automatic stop of the rapid paper sheet former, opening the paper making barrel, covering a paper making cloth and a blanket on the formed paper, rolling back and forth by a press roller to remove part of water, then taking down the wet paper sheet together with the paper making cloth, covering the paper making cloth on the other surface of the wet paper sheet, then placing the wet paper sheet between the two blankets, and squeezing by a squeezer;
step nine, opening a presser, pressing the wet paper sheet, the blanket and the papermaking cloth, putting the paper pattern and the blanket between an upper pressing plate and a lower pressing plate of the presser, starting the presser, pressing the formed paper sheet for a specified time under a set pressure, putting down the lower pressing plate of the presser after pressing is finished, and taking out the blanket and the paper pattern;
tenthly, placing the formed paper pattern wrapped by the papermaking cloth in a quick paper sheet dryer for drying, taking out the paper pattern after the paper sheet is dried, removing the papermaking cloth on two sides, and placing the papermaking cloth in a sealing bag;
step eleven, performing surface sizing on the paper made by the paper making machine, performing surface sizing by using a styrene-acrylic emulsion with the concentration of 0.7%, and drying to obtain corrugated base paper;
and step twelve, placing the paper pattern of the corrugated base paper for more than 4 hours under the condition of constant temperature and constant humidity, and measuring the quantification, the fracture length, the ring crush index, the water absorption, the tightness and the water absorption of the paper.
In this embodiment, the measured quality indexes of the corrugating medium are: basis weight 100g/m2, firmness: 0.47g/cm3; the ring pressure index is 6.5 N.m/g; and (3) fracture length: 3.54km; water absorption: 110g/m2; moisture content: 8 percent.
Example 5
The difference from the embodiment 1 is that the method for producing the corrugated base paper by adding the waste lees pulp comprises the following steps:
step one, preparing the waste distilled grain pulp of the white spirit, wherein the beating degree of the waste distilled grain pulp of the white spirit is 87 DEG SR, and after beating, balancing moisture to measure the moisture content for later use;
step two, soaking, defibering and pulping the waste paper to measure the moisture for later use, wherein the pulping degree of the waste paper is 60 DEG SR;
step three, preparing cationic starch with the concentration of 2% as a dry strength agent for later use;
step four, preparing polyamide polyamine epichlorohydrin resin with the concentration of 1% as a wet strength agent for later use;
fifthly, preparing styrene-acrylic emulsion with the concentration of 0.6% for later use;
step six, mixing the waste vinasse pulp and the waste paper pulp according to the ratio of 2:8, weighing, pouring the slurry into a fluffer for fluffing, adding cationic starch, adding clear water with the volume of 1/3-1/2 of the volume of the fluffer cup, setting the fluffing rotation speed to 10000 revolutions, and starting the fluffer until fluffing is finished;
seventhly, pouring the defibered slurry into a plastic cup or a beaker after defibering, adding polyamide polyamine epoxy chloropropane resin with the concentration of 1% while stirring, standing for 1 minute, and removing paper from the pulp;
step eight, opening a rapid paper sheet former to carry out paper sheet making, simultaneously opening a water source and a vacuum pump power supply, setting the rapid paper sheet former to be automatic, closing a paper making barrel of the rapid paper sheet former, starting the rapid paper sheet former, pouring the pulp of a fluffing cup into the rapid paper sheet former when the water level reaches a first red line, then waiting for the automatic stop of the rapid paper sheet former, opening the paper making barrel, covering a paper making cloth and a blanket on the formed paper, rolling back and forth by a compression roller to remove partial water, then taking down the wet paper sheet together with the paper making cloth, covering the paper making cloth on the other surface of the wet paper sheet, then putting the wet paper sheet between the two blankets, and squeezing by a squeezer;
step nine, opening a presser, pressing the wet paper sheet, the blanket and the papermaking cloth, putting the paper pattern and the blanket between an upper pressing plate and a lower pressing plate of the presser, starting the presser, pressing the formed paper sheet for a specified time under a set pressure, putting down the lower pressing plate of the presser after pressing is finished, and taking out the blanket and the paper pattern;
tenthly, placing the formed paper pattern wrapped by the papermaking cloth in a quick paper sheet dryer for drying, taking out the paper pattern after the paper sheet is dried, removing the papermaking cloth on two sides, and placing the papermaking cloth in a sealing bag;
step eleven, performing surface sizing on the paper after papermaking, performing surface sizing by using a styrene-acrylic emulsion with the concentration of 0.6%, and drying to obtain corrugated base paper;
and step twelve, placing the paper pattern of the corrugated base paper for more than 4 hours under the condition of constant temperature and constant humidity, and measuring the quantification, the fracture length, the ring crush index, the water absorption, the tightness and the water absorption of the paper.
In this embodiment, the measured quality indexes of the corrugated base paper are as follows: basis weight 100g/m2, firmness: 0.46g/cm3; the ring pressure index is 6.9 N.m/g; and (3) fracture length: 3.33km; water absorption: 127g/m2; moisture content: 8 percent.
The invention adopts the white spirit waste vinasse pulp and the waste paper pulp to produce the corrugated base paper in proportion, the white spirit waste vinasse pulp is used for replacing the waste paper pulp to produce the corrugated base paper, the cost of the existing raw materials is reduced, waste resources are fully utilized, the problem of raw material shortage is solved, cationic starch is added as a dry strength agent, polyamide polyamine epoxy chloropropane resin is added as a wet strength agent, styrene-acrylic emulsion is adopted for surface sizing, the produced corrugated base paper reaches the first-class product, and the quality reaches the standard.
Claims (10)
1. A method for producing corrugated medium by adding spent grain pulp is characterized by comprising the following steps:
step one, pulping the prepared distilled grain pulp of the white spirit, balancing water, and measuring the water content for later use;
step two, soaking, defibering and pulping the waste paper to measure the moisture for later use;
step three, preparing cationic starch with the concentration of 1% -4% for later use;
step four, preparing polyamide polyamine epichlorohydrin resin with the concentration of 0.5-2% for later use;
fifthly, preparing styrene-acrylic emulsions with different concentrations for later use;
step six, after the waste vinasse pulp and the waste paper pulp are weighed according to a certain proportion, pouring the pulp into a fluffer for fluffing;
seventhly, pouring the defibered slurry into a plastic cup or a beaker after defibering, adding polyamide polyamine epoxy chloropropane resin with the concentration of 1% while stirring, standing for 1 minute, and removing paper from the pulp;
step eight, opening the rapid paper former to make paper, then automatically stopping the rapid paper former, opening the paper making barrel, covering paper making cloth and a blanket on the formed paper, rolling back and forth by using a press roll to remove part of water, then taking down the wet paper together with the paper making cloth, covering the paper making cloth on the other surface of the wet paper, then placing the wet paper between the two blankets, and then pressing by using a presser;
step nine, opening a presser to press wet paper sheets, blankets and papermaking cloth;
tenthly, placing the formed paper pattern wrapped by the papermaking cloth in a quick paper sheet dryer for drying, taking out the paper pattern after the paper sheet is dried, removing the papermaking cloth on two sides, and placing the papermaking cloth in a sealing bag;
step eleven, performing surface sizing on the paper after papermaking, performing surface sizing on the paper by using the styrene-acrylic emulsion with the concentration of 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9% and 1%, and drying to obtain corrugated base paper;
and step twelve, carrying out constant temperature and constant humidity treatment on the paper pattern of the corrugated base paper, and measuring the quantification, the fracture length, the ring crush index, the water absorption, the tightness and the water absorption of the paper.
2. The method for producing corrugated medium as claimed in claim 1, wherein the pulp is poured into a fluffing cup of a fluffer in the sixth step, cationic starch is added, clear water with volume of 1/3-1/2 of the fluffing cup is added, fluffing speed is set at 10000 revolutions, and the fluffer is started until fluffing is completed.
3. The method for producing corrugated medium as claimed in claim 1, wherein the fast sheet former is turned on in step eight while the water source and the vacuum pump power source are turned on, the fast sheet former is set to be automatic, the paper making barrel of the fast sheet former is turned off, the fast sheet former is started, the pulp in the fluffing cup is poured into the fast sheet former when the water level reaches the first red line, and then the fast sheet former is stopped automatically.
4. The method for manufacturing corrugated medium by adding spent grain pulp as claimed in claim 1, wherein the paper pattern and the felt are placed between the upper and lower pressing plates of the pressing machine in the ninth step, the pressing machine is started, the formed paper sheet is pressed for a specified time under a set pressure, and after the pressing is finished, the lower pressing plate of the pressing machine is put down, and the felt and the paper pattern are taken out.
5. The method for producing corrugated medium by adding spent grain pulp as recited in claim 1, wherein the corrugated medium is left for more than 4 hours under the constant temperature and humidity treatment in the step twelve.
6. The method for producing corrugated medium as claimed in claim 1, wherein the ratio of spent grain pulp to waste paper pulp is 2.
7. The method for producing corrugated medium by adding spent grain pulp as claimed in claim 1, wherein the beating degree of the spent grain pulp is 50 ° SR-90 ° SR, and the beating degree of the waste pulp is 40 ° SR-80 ° SR.
8. The method for producing corrugated medium as claimed in claim 1, wherein the concentration of the styrene-acrylic emulsion in the fifth step is 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, 1%.
9. The method for manufacturing corrugated medium by adding spent grain pulp as claimed in claim 1, wherein the cationic starch is a dry strength agent, and the polyamide polyamine epichlorohydrin resin is a wet strength agent.
10. The method for producing corrugated medium as claimed in claim 1, wherein the concentration of the styrene-acrylic emulsion in the step eleven is 0.6%, 0.7%, 0.8%, 0.9%, 1%.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211473748.4A CN115852722A (en) | 2022-11-22 | 2022-11-22 | Method for producing corrugated base paper by adding waste vinasse pulp |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211473748.4A CN115852722A (en) | 2022-11-22 | 2022-11-22 | Method for producing corrugated base paper by adding waste vinasse pulp |
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| CN202211473748.4A Pending CN115852722A (en) | 2022-11-22 | 2022-11-22 | Method for producing corrugated base paper by adding waste vinasse pulp |
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| CN (1) | CN115852722A (en) |
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