CN104911942A - Manufacturing process of ultrahigh bulk paper cup raw paper - Google Patents
Manufacturing process of ultrahigh bulk paper cup raw paper Download PDFInfo
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- CN104911942A CN104911942A CN201510412114.1A CN201510412114A CN104911942A CN 104911942 A CN104911942 A CN 104911942A CN 201510412114 A CN201510412114 A CN 201510412114A CN 104911942 A CN104911942 A CN 104911942A
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Abstract
The invention provides a manufacturing process of ultrahigh bulk paper cup raw paper. The manufacturing process comprises the steps of pulping, blending and papermaking. A surface layer is prepared from the following raw materials in percent: 70-75% of LBKP and 25-30% of NBKP; a bottom layer is prepared from the following raw materials in percent: 65-70% of LBKP and 30-35% of NBKP; a core layer is prepared from the following raw materials in percent: 20-30% of LBKP, 10-15% of NBKP and 60-65% of APMP; the bulkiness of the APMP pulp is 3.5-3.7cm<3>/g, and the tensile strength is 14-16N*m/g; the step of papermaking is to feed three layers of blended pulp into a papermaking machine to carry out compound papermaking; the quantity of the surface layer is 25-35g/m<2>, the quantity of the core layer is 110-130g/m<2> and the quantity of the bottom layer is 35-45g/m<2>. The raw paper has high bulkiness and good flexibility and is not easy to turn and explode.
Description
Technical field
The present invention relates to the manufacture craft of paper, be specifically related to a kind of manufacture craft of superelevation bulk cupstock.
Background technology
Cupstock needs to contact with liquid food, even needs to contact with the liquid food of heat, higher to the performance requirement such as deflection, obdurability of body paper.Deflection is the key factor affecting dixie cup machine-shaping, if body paper deflection is poor, be subject to during machine-shaping the powerful mechanism of mould easily occur dixie cup beat collapse or conquassation wrinkling, if body paper deflection is too high, easily make wiredrawn edge burst.The conventional method increasing body paper thickness improves the deflection of body paper at present, but the wiredrawn edge diameter of dixie cup processing mould does not allow body paper thickness too high, because thickness is too high, the pressure of shaping needs is larger, if thickness exceedes wiredrawn edge radius, the mechanical presses be subject to time shaping easily makes wiredrawn edge ftracture.In addition, for the body paper that need carry out surface printing, owing to needing surface finish when manufacturing paper with pulp, therefore also limit paper sheet thickness can only increase in proper range.Dixie cup is shaping all need longitudinal sealing after, then carry out glass underseal close and wiredrawn edge shaping, this just requires that paper has higher longitudinal deflection to resist the mechanical pressure that body paper is subject to processing formation mould impact of collision, avoid dixie cup the conjunction of cup underseal and wiredrawn edge shaping time beaten and collapsed.
When the obdurability height of cupstock is then related to body paper machine-shaping, whether dixie cup easily occurs that wiredrawn edge ftractures, and obdurability is higher, is more not easy to occur that wiredrawn edge ftractures.In wiredrawn edge forming process, due to the characteristic of fiber itself and the randomness of boiling making beating effect, the intensity of every root fiber binding ability and fiber itself is not identical, causes paper easily to destroy from the most weak spot of intensity, cause strain variation around, stress is redistributed; When weak spot stress exceedes the bond strength at this position or the intensity of fiber own, there is crackle in weak spot, and cracks unstability and spread, paper ftractures, percentage elongation is the important indicator weighing paper obdurability, and percentage elongation is higher, and the obdurability of paper is larger.Therefore the percentage elongation of paper is improved as far as possible to improve the obdurability of body paper in producing.
That cupstock is quantitatively 170 ~ 210g/m on the market
2, surface layer and bottom are quantitatively 30 ~ 40g/m
2, sandwich layer is quantitatively 110 ~ 130g/m
2, bulk is 1.2 ~ 1.3cm
3/ g, for cupstock quantitative equally, bulk is larger, then thickness is larger, and namely the deflection of body paper is better, but obdurability can be deteriorated, and increases the risk of wiredrawn edge cracking.In the production process of cupstock, the mode of the bulk of body paper, in order to production control cost, when maintaining body paper and being quantitatively constant, can improve to promote body paper performance as far as possible in producer, but when bulk is too high, more than 1.5cm
3during/g, thickness is blocked up, and the percentage elongation of body paper declines, and when machine-shaping, the pressure of shaping needs is larger, and what the mechanical presses be subject to time shaping made wiredrawn edge ftracture has a big risk increases greatly, reduces body paper performance.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of manufacture craft of superelevation bulk cupstock, and this technique not only can improve bulk to the 1.6 ~ 1.7cm of body paper
3/ g, can ensure that again body paper not easily occurs that when machine-shaping wiredrawn edge bursts.
Technical scheme provided by the invention is the manufacture craft of superelevation bulk cupstock, comprise slurrying, condiment, manufacture paper with pulp, described slurrying comprises manufacture surface layer, bottom and sandwich layer three layers of slurries, and described surface layer is made up of the raw material of following percentage by weight: LBKP 70 ~ 75%, NBKP 25 ~ 30%; Described bottom is made up of the raw material of following percentage by weight: LBKP 65 ~ 70%, NBKP 30 ~ 35%; Described sandwich layer is made up of following raw material: LBKP 20 ~ 30%, NBKP 10 ~ 15%, APMP 60 ~ 65%;
Described manufacture paper with pulp be by condiment after three layers of slurries send into paper machines and carry out compound and manufacture paper with pulp, surface layer is quantitatively 25 ~ 35g/m
2, sandwich layer is quantitatively 110 ~ 130g/m2, and bottom is quantitatively 35 ~ 45g/m
2.
LBKP slurry is chemical bleaching slurry short fiber; NBKP slurry is the long fibre of chemical bleaching slurry; APMP slurry is Alkaline Peroxide Mechanical Pulp, and its bulk is 3.5 ~ 3.7cm
3/ g, high bulk and the high strength of tensile strength 14 ~ 16Nm/g, APMP slurry can improve into the bulk of paper, and percentage elongation and folding strength.
The preparation method of described APMP is as follows:
1) heat-treat after Eucalyptus being cut into slices, wash, steam in advance;
2) be that the wood chip squeezer of 1:3 extrudes by the Eucalyptus compression ratio after steaming in advance, then impregnated in liquid, liquid is by H
2o
2, NaOH, DTPA, stabilizing agent and water composition, H
2o
21.5%, DTPA consumption of consumption to be 1.5%, NaOH consumption of Eucalyptus dry weight be Eucalyptus dry weight is 0.2% of Eucalyptus dry weight, and stabilizing agent dosage is Eucalyptus dry weight, and the consumption of water is for Eucalyptus dry weight 96.8%;
3) wood chip after dipping is proceeded to reaction warehouse, at 75 DEG C, react 40min;
4) reacted wood chip being proceeded to high-density paste mill, is carry out high consistency refining 40% time in mass concentration, and controlling defibrination temperature is 131 DEG C, and refining pressure is 340KPa, and the freedom after defibrination controls at 600 ~ 680ml;
5) in the slurry after high consistency refining, H is added respectively
2o
2, NaOH, DTPA and stabilizing agent, H
2o
21.5%, DTPA addition of addition to be the addition of Eucalyptus dry weight 3%, NaOH be Eucalyptus dry weight be 0.2% of Eucalyptus dry weight, the addition of stabilizing agent is 0.15% of Eucalyptus dry weight, at pH is 10,90 DEG C, bleach 50min;
6) by the slurry discharging after bleaching to eliminating potential pool, be stir for 4.5% time in mass concentration, controlling the latent temperature that disappears is 75 DEG C, and the time is 35min;
7) slurry after processing of diving disappearing carries out low dense defibrination, and refining concentration controls 4%, and temperature controls within 90 DEG C, and refining pressure controls at 150KPa, and pulp freedom controls at 400ml;
8) be screen the slurry after low dense defibrination for 2% time in mass concentration, good slurry freedom controls at 300ml;
9) slurry after screening is concentrated into 10% through polydisc thickener, then is that 10% storage is for subsequent use with mass concentration after four sections of pressafiner pulp washings.The bulk that finished product APMP starches can reach 3.5 ~ 3.7cm
3/ g, anti-tensile 14 ~ 16Nm/g.
For existing cupstock, owing to considering printing performance, the quantitative of surface layer is generally greater than or equal to the quantitative of bottom, and three layers of composite paper-cup body paper of the present invention, consider that bottom is the most weak location of Resisting fractre, when not changing body paper and being always quantitative, suitable minimizing surface layer quantitatively and transfer them to bottom, and suitably increase the content of bottom NBKP slurries, quantitative and the long stapled content of bottom by increase bottom, to improve the obdurability of bottom, greatly reduce wiredrawn edge explosion risk when machine-shaping.
As preferably, described paper machine is fourdrinier paper machine, regulates the slurry network speed ratio of manufacturing paper with pulp in process to be 0.94 ~ 0.96.Slurries are the tractive force netted when net, acceleration, can fiber dispersion be impelled, can reduce fleeces poly-with wadding is poly-again, the evenness of enhancing slurries, improves porous and the flexibility of body paper, namely improve the pliability of body paper, the corresponding reduction of risk of wiredrawn edge explosion during machine-shaping.When slurry network speed ratio is 0.95, the evenness of slurries is best, and the pliability of body paper is best.
Further, by strengthening opening degree of slice lip, increase slurry flow, and dilute slurries online concentration, the online concentration of surface layer and bottom slurries is reduced to 0.34 ~ 0.36% from 0.38%, and the online concentration of sandwich layer slurries is reduced to 0.8 ~ 0.9% from 1.0%, can be played optimize slurries evenness and fiber interweaving further by the online concentration and increase slurry flow reducing by three layers of slurries, improve the pliability of body paper, reduce wiredrawn edge explosion risk during machine-shaping further.
Described condiment comprises adding to be filled out, described in add that to fill out be that in sandwich layer slurries, add talcum powder and ore deposit fine, the weight ratio of talcum powder and ore deposit fibre is 2 ~ 4:1.Talcum powder is a kind of magnesium silicate minerals, adds the evenness that can improve paper in paper, smoothness, pliability, and ore deposit fibre is mineral fibres, interweaves well, can strengthen the intensity of paper with string.In traditional handicraft, the total amount that adds of talcum powder and ore deposit fibre is 150 ~ 200kg/t sandwich layer slurries, and the ratio of talcum powder and ore deposit fibre is 1:1, in the present invention under the prerequisite keeping filler total amount constant, the weight ratio of talcum powder and ore deposit fibre is adjusted to 2 ~ 4:1, obviously the speed of a motor vehicle can be promoted to 1100 ~ 1200m/min from 1000m/min.When the weight ratio of talcum powder and ore deposit fibre is 3:1, the speed of a motor vehicle can reach maximum.
Further, the freedom of LBKP in each layer slurries is adjusted 370 ~ 400ml from 330 ~ 350ml of routine, the freedom of NBKP is 300 ~ 330ml, the freedom of APMP is 300 ~ 330ml, because the freedom of slurry in slurries is all higher, therefore the drainability of slurries is better, can further improve the speed of a motor vehicle to 1200 ~ 1300m/min, and the decline of the tensile strength of paper can not be caused into, greatly improve production efficiency.
Condiment of the present invention comprises applying glue, and described applying glue adds rosin and aluminum sulfate respectively in three layers of slurries, and every layer of rosin consumption is 15 ~ 20kg/t every layer slurries, and every layer of addition of aluminum sulfate is 15 ~ 25kg/t every layer slurries.
Surface layer of the present invention is made up of the slurry of following percentage by weight: LBKP 72%, NBKP 28%; Described bottom is made up of the slurry of following percentage by weight: LBKP68%, NBKP 32%; Described sandwich layer is made up of following parts by weight paste: LBKP 25%, NBKP 10%, APMP 65%.
Surface layer of the present invention is quantitatively 30g/m
2, sandwich layer is quantitatively 113g/m
2, bottom is quantitatively 32g/m
2.
The present invention, when keeping quantitatively constant, had both improve the bulk 1.6 ~ 1.7cm of body paper
3/ g, obdurability is good, is not easy to occur that wiredrawn edge bursts, and realizes producing high-quality body paper, to meet the performance requirement of dixie cup machine-shaping to body paper when not increasing cost.
Detailed description of the invention
The present invention is further elaborated for following specific embodiment, but not as a limitation of the invention.
Embodiment 1
1) slurrying: comprise and manufacture surface layer, bottom and sandwich layer three layers of slurries, described surface layer slurries are made up of the raw material of following percentage by weight: LBKP 70%, NBKP 30%; Described bottom slurries are made up of the raw material of following percentage by weight: LBKP 65%, NBKP 35%; Described sandwich layer slurries are made up of following raw material: LBKP 20%, NBKP 15%, APMP 65%; The bulk of described APMP slurry is 3.5cm
3/ g, tensile strength 14Nm/g.
2) condiment: comprise applying glue, described applying glue adds rosin and aluminum sulfate respectively in three layers of slurries, and every layer of rosin consumption is 15kg/t every layer slurries, and every layer of addition of aluminum sulfate is 15kg/t every layer slurries.
3) manufacture paper with pulp: layer slurries feeding paper machine of three after condiment is carried out compound and manufactures paper with pulp, surface layer is quantitatively 25g/m
2, sandwich layer is quantitatively 110g/m
2, bottom is quantitatively 35g/m
2.
Comparative example 1
1) slurrying: comprise and manufacture surface layer, bottom and sandwich layer three layers of slurries, described surface layer slurries are made up of the raw material of following percentage by weight: LBKP 70%, NBKP 30%; Described bottom slurries are made up of the raw material of following percentage by weight: LBKP 70%, NBKP 30%; Described sandwich layer slurries are made up of following raw material: LBKP 20%, NBKP 15%, APMP 65%; The bulk of described APMP slurry is 3.5cm
3/ g, tensile strength 14Nm/g.
2) condiment: comprise applying glue, described applying glue adds rosin and aluminum sulfate respectively in three layers of slurries, and every layer of rosin consumption is 15kg/t every layer slurries, and every layer of addition of aluminum sulfate is 15kg/t every layer slurries.
3) manufacture paper with pulp: layer slurries feeding paper machine of three after condiment is carried out compound and manufactures paper with pulp, surface layer is quantitatively 30g/m
2, sandwich layer is quantitatively 110g/m
2, bottom is quantitatively 30g/m
2.
Embodiment 2
1) slurrying: comprise and manufacture surface layer, bottom and sandwich layer three layers of slurries, described surface layer slurries are made up of the raw material of following percentage by weight: LBKP 75%, NBKP 25%; Described bottom slurries are made up of the raw material of following percentage by weight: LBKP 70%, NBKP 30%; Described sandwich layer slurries are made up of following raw material: LBKP 30%, NBKP 10%, APMP 60%; The bulk of described APMP slurry is 3.7cm
3/ g, tensile strength 16Nm/g.
2) condiment: comprise applying glue, described applying glue adds rosin and aluminum sulfate respectively in three layers of slurries, and every layer of rosin consumption is 20kg/t every layer slurries, and every layer of addition of aluminum sulfate is 25kg/t every layer slurries.
3) manufacture paper with pulp: layer slurries feeding paper machine of three after condiment is carried out compound and manufactures paper with pulp, regulate the slurry network speed ratio of manufacturing paper with pulp in process to be 0.94, surface layer is quantitatively 35g/m
2, sandwich layer is quantitatively 130g/m
2, bottom is quantitatively 45g/m
2.
Embodiment 3
1) slurrying: comprise and manufacture surface layer, bottom and sandwich layer three layers of slurries, described surface layer is made up of the slurry of following percentage by weight: LBKP 72%, NBKP 28%; Described bottom is made up of the slurry of following percentage by weight: LBKP68%, NBKP 32%; Described sandwich layer is made up of following parts by weight paste: LBKP 25%, NBKP10%, APMP 65%; The bulk of described APMP slurry is 3.6cm
3/ g, tensile strength 15Nm/g.
2) condiment: comprise applying glue, described applying glue adds rosin and aluminum sulfate respectively in three layers of slurries, and every layer of rosin consumption is 18kg/t every layer slurries, and every layer of addition of aluminum sulfate is 20kg/t every layer slurries.
3) manufacture paper with pulp: layer slurries feeding fourdrinier paper machine of three after condiment is carried out compound and manufactures paper with pulp, regulate the slurry network speed ratio of manufacturing paper with pulp in process to be 0.96, surface layer is quantitatively 30g/m
2, sandwich layer is quantitatively 120g/m
2, bottom is quantitatively 40g/m
2.
Embodiment 4
1) slurrying: comprise and manufacture surface layer, bottom and sandwich layer three layers of slurries, described surface layer slurries are made up of the raw material of following percentage by weight: LBKP 70%, NBKP 30%; Described bottom slurries are made up of the raw material of following percentage by weight: LBKP 65%, NBKP 35%; Described sandwich layer slurries are made up of following raw material: LBKP 20%, NBKP 15%, APMP 65%; The bulk of described APMP slurry is 3.5cm
3/ g, tensile strength 14Nm/g.
2) condiment: comprise applying glue, described applying glue adds rosin and aluminum sulfate respectively in three layers of slurries, and every layer of rosin consumption is 20kg/t every layer slurries, and every layer of addition of aluminum sulfate is 25kg/t every layer slurries.
3) manufacture paper with pulp: layer slurries feeding fourdrinier paper machine of three after condiment is carried out compound and manufactures paper with pulp, regulate the slurry network speed ratio of manufacturing paper with pulp in process to be 0.95, surface layer is quantitatively 25g/m
2, sandwich layer is quantitatively 110g/m
2, bottom is quantitatively 35g/m
2.
Comparative example 2
1) slurrying: comprise and manufacture surface layer, bottom and sandwich layer three layers of slurries, described surface layer slurries are made up of the raw material of following percentage by weight: LBKP 70%, NBKP 30%; Described bottom slurries are made up of the raw material of following percentage by weight: LBKP 65%, NBKP 35%; Described sandwich layer slurries are made up of following raw material: LBKP 20%, NBKP 15%, APMP 65%; The bulk of described APMP slurry is 3.5cm
3/ g, tensile strength 14Nm/g.
2) condiment: comprise applying glue, described applying glue adds rosin and aluminum sulfate respectively in three layers of slurries, and every layer of rosin consumption is 20kg/t every layer slurries, and every layer of addition of aluminum sulfate is 25kg/t every layer slurries.
3) manufacture paper with pulp: layer slurries feeding fourdrinier paper machine of three after condiment is carried out compound and manufactures paper with pulp, regulate the slurry network speed ratio of manufacturing paper with pulp in process to be 1, surface layer is quantitatively 25g/m
2, sandwich layer is quantitatively 110g/m2, and bottom is quantitatively 35g/m
2.
Embodiment 5
1) slurrying: comprise and manufacture surface layer, bottom and sandwich layer three layers of slurries, described surface layer slurries are made up of the raw material of following percentage by weight: LBKP 75%, NBKP 25%; Described bottom slurries are made up of the raw material of following percentage by weight: LBKP 70%, NBKP 30%; Described sandwich layer slurries are made up of following raw material: LBKP 30%, NBKP 10%, APMP 60%; The bulk of described APMP slurry is 3.7cm
3/ g, tensile strength 16Nm/g.
2) condiment: comprise applying glue, described applying glue adds rosin and aluminum sulfate respectively in three layers of slurries, and every layer of rosin consumption is 20kg/t every layer slurries, and every layer of addition of aluminum sulfate is 25kg/t every layer slurries.
3) manufacture paper with pulp: layer slurries feeding fourdrinier paper machine of three after condiment is carried out compound and manufactures paper with pulp, regulate the slurry network speed ratio of manufacturing paper with pulp in process to be 0.95, the online concentration regulating surface layer and bottom slurries is 0.34%, and the online concentration of sandwich layer slurries is 0.8%.Surface layer is quantitatively 35g/m
2, sandwich layer is quantitatively 130g/m
2, bottom is quantitatively 45g/m
2.
Embodiment 5 '
1) slurrying: comprise and manufacture surface layer, bottom and sandwich layer three layers of slurries, described surface layer slurries are made up of the raw material of following percentage by weight: LBKP 75%, NBKP 25%; Described bottom slurries are made up of the raw material of following percentage by weight: LBKP 70%, NBKP 30%; Described sandwich layer slurries are made up of following raw material: LBKP 30%, NBKP 10%, APMP 60%; The bulk of described APMP slurry is 3.7cm
3/ g, tensile strength 16Nm/g.
2) condiment: comprise applying glue, described applying glue adds rosin and aluminum sulfate respectively in three layers of slurries, and every layer of rosin consumption is 20kg/t every layer slurries, and every layer of addition of aluminum sulfate is 25kg/t every layer slurries.
3) manufacture paper with pulp: layer slurries feeding fourdrinier paper machine of three after condiment is carried out compound and manufactures paper with pulp, regulate the slurry network speed ratio of manufacturing paper with pulp in process to be 0.95, the online concentration regulating surface layer and bottom slurries is 0.36%, and the online concentration of sandwich layer slurries is 0.9%.Surface layer is quantitatively 35g/m
2, sandwich layer is quantitatively 130g/m
2, bottom is quantitatively 45g/m
2.
Embodiment 5 "
1) slurrying: comprise and manufacture surface layer, bottom and sandwich layer three layers of slurries, described surface layer slurries are made up of the raw material of following percentage by weight: LBKP 75%, NBKP 25%; Described bottom slurries are made up of the raw material of following percentage by weight: LBKP 70%, NBKP 30%; Described sandwich layer slurries are made up of following raw material: LBKP 30%, NBKP 10%, APMP 60%; The bulk of described APMP slurry is 3.7cm
3/ g, tensile strength 16Nm/g.
2) condiment: comprise applying glue, described applying glue adds rosin and aluminum sulfate respectively in three layers of slurries, and every layer of rosin consumption is 20kg/t every layer slurries, and every layer of addition of aluminum sulfate is 25kg/t every layer slurries.
3) manufacture paper with pulp: layer slurries feeding fourdrinier paper machine of three after condiment is carried out compound and manufactures paper with pulp, regulate the slurry network speed ratio of manufacturing paper with pulp in process to be 0.95, the online concentration regulating surface layer and bottom slurries is 0.35%, and the online concentration of sandwich layer slurries is 0.9%.Surface layer is quantitatively 35g/m
2, sandwich layer is quantitatively 130g/m
2, bottom is quantitatively 45g/m
2.
Comparative example 3
1) slurrying: comprise and manufacture surface layer, bottom and sandwich layer three layers of slurries, described surface layer slurries are made up of the raw material of following percentage by weight: LBKP 75%, NBKP 25%; Described bottom slurries are made up of the raw material of following percentage by weight: LBKP 70%, NBKP 30%; Described sandwich layer slurries are made up of following raw material: LBKP 30%, NBKP 10%, APMP 60%; The bulk of described APMP slurry is 3.7cm
3/ g, tensile strength 16Nm/g.
2) condiment: comprise applying glue, described applying glue adds rosin and aluminum sulfate respectively in three layers of slurries, and every layer of rosin consumption is 20kg/t every layer slurries, and every layer of addition of aluminum sulfate is 25kg/t every layer slurries.
3) manufacture paper with pulp: layer slurries feeding fourdrinier paper machine of three after condiment is carried out compound and manufactures paper with pulp, regulate the slurry network speed ratio of manufacturing paper with pulp in process to be 0.95, the online concentration regulating surface layer and bottom slurries is 0.38%, and the online concentration of sandwich layer slurries is 1.0%.Surface layer is quantitatively 35g/m
2, sandwich layer is quantitatively 130g/m
2, bottom is quantitatively 45g/m
2.
Embodiment 6
1) slurrying: comprise and manufacture surface layer, bottom and sandwich layer three layers of slurries, described surface layer slurries are made up of the raw material of following percentage by weight: LBKP 70%, NBKP 30%; Described bottom slurries are made up of the raw material of following percentage by weight: LBKP 65%, NBKP 35%; Described sandwich layer slurries are made up of following raw material: LBKP 20%, NBKP 15%, APMP 65%; The bulk of described APMP slurry is 3.5cm
3/ g, tensile strength 14Nm/g.
2) condiment: comprise adding and fill out, adds talcum powder in sandwich layer slurries and ore deposit is fine, and the total amount that adds of talcum powder and ore deposit fibre is 150kg/t sandwich layer slurries, and the weight ratio of talcum powder and ore deposit fibre is 2:1.Also comprise applying glue, described applying glue adds rosin and aluminum sulfate respectively in three layers of slurries, and every layer of rosin consumption is 18kg/t every layer slurries, and every layer of addition of aluminum sulfate is 20kg/t every layer slurries.
3) manufacture paper with pulp: layer slurries feeding fourdrinier paper machine of three after condiment is carried out compound and manufactures paper with pulp, regulate the slurry network speed ratio of manufacturing paper with pulp in process to be 0.95, the online concentration regulating surface layer and bottom slurries is 0.35%, and the online concentration of sandwich layer slurries is 0.9%.Surface layer is quantitatively 25g/m
2, sandwich layer is quantitatively 110g/m
2, bottom is quantitatively 35g/m
2.
Embodiment 6 '
1) slurrying: comprise and manufacture surface layer, bottom and sandwich layer three layers of slurries, described surface layer slurries are made up of the raw material of following percentage by weight: LBKP 70%, NBKP 30%; Described bottom slurries are made up of the raw material of following percentage by weight: LBKP 65%, NBKP 35%; Described sandwich layer slurries are made up of following raw material: LBKP 20%, NBKP 15%, APMP 65%; The bulk of described APMP slurry is 3.5cm
3/ g, tensile strength 14Nm/g.
2) condiment: comprise adding and fill out, adds talcum powder in sandwich layer slurries and ore deposit is fine, and the total amount that adds of talcum powder and ore deposit fibre is 200kg/t sandwich layer slurries, and the weight ratio of talcum powder and ore deposit fibre is 4:1.Also comprise applying glue, described applying glue adds rosin and aluminum sulfate respectively in three layers of slurries, and every layer of rosin consumption is 18kg/t every layer slurries, and every layer of addition of aluminum sulfate is 20kg/t every layer slurries.
3) manufacture paper with pulp: layer slurries feeding fourdrinier paper machine of three after condiment is carried out compound and manufactures paper with pulp, regulate the slurry network speed ratio of manufacturing paper with pulp in process to be 0.95, the online concentration regulating surface layer and bottom slurries is 0.35%, and the online concentration of sandwich layer slurries is 0.9%.Surface layer is quantitatively 25g/m
2, sandwich layer is quantitatively 110g/m
2, bottom is quantitatively 35g/m
2.
Embodiment 6 "
1) slurrying: comprise and manufacture surface layer, bottom and sandwich layer three layers of slurries, described surface layer slurries are made up of the raw material of following percentage by weight: LBKP 70%, NBKP 30%; Described bottom slurries are made up of the raw material of following percentage by weight: LBKP 65%, NBKP 35%; Described sandwich layer slurries are made up of following raw material: LBKP 20%, NBKP 15%, APMP 65%; The bulk of described APMP slurry is 3.5cm
3/ g, tensile strength 14Nm/g.
2) condiment: comprise adding and fill out, adds talcum powder in sandwich layer slurries and ore deposit is fine, and the total amount that adds of talcum powder and ore deposit fibre is 180kg/t sandwich layer slurries, and the weight ratio of talcum powder and ore deposit fibre is 3:1.Also comprise applying glue, described applying glue adds rosin and aluminum sulfate respectively in three layers of slurries, and every layer of rosin consumption is 18kg/t every layer slurries, and every layer of addition of aluminum sulfate is 20kg/t every layer slurries.
3) manufacture paper with pulp: layer slurries feeding fourdrinier paper machine of three after condiment is carried out compound and manufactures paper with pulp, regulate the slurry network speed ratio of manufacturing paper with pulp in process to be 0.95, the online concentration regulating surface layer and bottom slurries is 0.35%, and the online concentration of sandwich layer slurries is 0.9%.Surface layer is quantitatively 25g/m
2, sandwich layer is quantitatively 110g/m
2, bottom is quantitatively 35g/m
2.
Comparative example 4
1) slurrying: comprise and manufacture surface layer, bottom and sandwich layer three layers of slurries, described surface layer slurries are made up of the raw material of following percentage by weight: LBKP 70%, NBKP 30%; Described bottom slurries are made up of the raw material of following percentage by weight: LBKP 65%, NBKP 35%; Described sandwich layer slurries are made up of following raw material: LBKP 20%, NBKP 15%, APMP 65%; The bulk of described APMP slurry is 3.5cm
3/ g, tensile strength 14Nm/g.
2) condiment: comprise adding and fill out, adds talcum powder in sandwich layer slurries and ore deposit is fine, and the total amount that adds of talcum powder and ore deposit fibre is 180kg/t sandwich layer slurries, and the weight ratio of talcum powder and ore deposit fibre is 1:1.Also comprise applying glue, described applying glue adds rosin and aluminum sulfate respectively in three layers of slurries, and every layer of rosin consumption is 18kg/t every layer slurries, and every layer of addition of aluminum sulfate is 20kg/t every layer slurries.
3) manufacture paper with pulp: layer slurries feeding fourdrinier paper machine of three after condiment is carried out compound and manufactures paper with pulp, regulate the slurry network speed ratio of manufacturing paper with pulp in process to be 0.95, the online concentration regulating surface layer and bottom slurries is 0.35%, and the online concentration of sandwich layer slurries is 0.9%.Surface layer is quantitatively 25g/m
2, sandwich layer is quantitatively 110g/m
2, bottom is quantitatively 35g/m
2.
Embodiment 7
1) slurrying: comprise and manufacture surface layer, bottom and sandwich layer three layers of slurries, described surface layer is made up of the slurry of following percentage by weight: LBKP 72%, NBKP 28%; Described bottom is made up of the slurry of following percentage by weight: LBKP68%, NBKP 32%; Described sandwich layer is made up of following parts by weight paste: LBKP 25%, NBKP10%, APMP 65%; The bulk of described APMP slurry is 3.6cm
3/ g, tensile strength 15Nm/g.The freedom regulating the freedom of LBKP in three layers of slurries to be the freedom of 370ml, NBKP to be 300ml, APMP is 300ml.
2) condiment: comprise adding and fill out, adds talcum powder in sandwich layer slurries and ore deposit is fine, and the total amount that adds of talcum powder and ore deposit fibre is 180kg/t sandwich layer slurries, and the weight ratio of talcum powder and ore deposit fibre is 3:1.Also comprise applying glue, described applying glue adds rosin and aluminum sulfate respectively in three layers of slurries, and every layer of rosin consumption is 18kg/t every layer slurries, and every layer of addition of aluminum sulfate is 20kg/t every layer slurries.
3) manufacture paper with pulp: layer slurries feeding fourdrinier paper machine of three after condiment is carried out compound and manufactures paper with pulp, regulate the slurry network speed ratio of manufacturing paper with pulp in process to be 0.95, the online concentration regulating surface layer and bottom slurries is 0.35%, and the online concentration of sandwich layer slurries is 0.9%.Surface layer is quantitatively 30g/m
2, sandwich layer is quantitatively 120g/m
2, bottom is quantitatively 40g/m
2.
Embodiment 7 '
1) slurrying: comprise and manufacture surface layer, bottom and sandwich layer three layers of slurries, described surface layer is made up of the slurry of following percentage by weight: LBKP 72%, NBKP 28%; Described bottom is made up of the slurry of following percentage by weight: LBKP68%, NBKP 32%; Described sandwich layer is made up of following parts by weight paste: LBKP 25%, NBKP10%, APMP 65%; The bulk of described APMP slurry is 3.6cm
3/ g, tensile strength 15Nm/g.The freedom regulating the freedom of LBKP in three layers of slurries to be the freedom of 400ml, NBKP to be 330ml, APMP is 330ml.
2) condiment: comprise adding and fill out, adds talcum powder in sandwich layer slurries and ore deposit is fine, and the total amount that adds of talcum powder and ore deposit fibre is 180kg/t sandwich layer slurries, and the weight ratio of talcum powder and ore deposit fibre is 3:1.Also comprise applying glue, described applying glue adds rosin and aluminum sulfate respectively in three layers of slurries, and every layer of rosin consumption is 18kg/t every layer slurries, and every layer of addition of aluminum sulfate is 20kg/t every layer slurries.
3) manufacture paper with pulp: layer slurries feeding fourdrinier paper machine of three after condiment is carried out compound and manufactures paper with pulp, regulate the slurry network speed ratio of manufacturing paper with pulp in process to be 0.95, the online concentration regulating surface layer and bottom slurries is 0.35%, and the online concentration of sandwich layer slurries is 0.9%.Surface layer is quantitatively 30g/m
2, sandwich layer is quantitatively 120g/m
2, bottom is quantitatively 40g/m
2.
Comparative example 5
1) slurrying: comprise and manufacture surface layer, bottom and sandwich layer three layers of slurries, described surface layer is made up of the slurry of following percentage by weight: LBKP 72%, NBKP 28%; Described bottom is made up of the slurry of following percentage by weight: LBKP68%, NBKP 32%; Described sandwich layer is made up of following parts by weight paste: LBKP 25%, NBKP10%, APMP 65%; The bulk of described APMP slurry is 3.6cm
3/ g, tensile strength 15Nm/g.The freedom regulating the freedom of LBKP in three layers of slurries to be the freedom of 350ml, NBKP to be 300ml, APMP is 300ml.
2) condiment: comprise adding and fill out, adds talcum powder in sandwich layer slurries and ore deposit is fine, and the total amount that adds of talcum powder and ore deposit fibre is 180kg/t sandwich layer slurries, and the weight ratio of talcum powder and ore deposit fibre is 3:1.Also comprise applying glue, described applying glue adds rosin and aluminum sulfate respectively in three layers of slurries, and every layer of rosin consumption is 18kg/t every layer slurries, and every layer of addition of aluminum sulfate is 20kg/t every layer slurries.
3) manufacture paper with pulp: layer slurries feeding fourdrinier paper machine of three after condiment is carried out compound and manufactures paper with pulp, regulate the slurry network speed ratio of manufacturing paper with pulp in process to be 0.95, the online concentration regulating surface layer and bottom slurries is 0.35%, and the online concentration of sandwich layer slurries is 0.9%.Surface layer is quantitatively 30g/m
2, sandwich layer is quantitatively 120g/m
2, bottom is quantitatively 40g/m
2.
Body paper above-described embodiment and comparative example made carries out indices inspection, the results are shown in following table 1, and above-mentioned body paper is processed into dixie cup respectively, detects its wiredrawn edge cracking situation, refers to table 2:
Table 1:
Table 2:
from table 1,2, embodiment 1 is comparative example 1 comparatively, and when maintenance is always quantitatively constant, quantitatively reduced by surface layer, bottom quantitatively increases, and suitably increases bottom N slurry proportioning, and its folding strength, percentage elongation significantly increase, and wiredrawn edge cracking rate significantly reduces.
The slurry network speed of embodiment 2 ~ 4 than and comparative example 2 less, therefore, higher all compared with comparative example 2 of the folding strength of embodiment 2 ~ 4, percentage elongation, and wiredrawn edge cracking rate reduces, wherein, folding strength, the percentage elongation of embodiment 4 are the highest, and wiredrawn edge cracking rate is minimum.
Embodiment 5 ~ 5 " compared with comparative example 3; the online concentration of its surface layer, bottom and sandwich layer is lower; therefore; embodiment 5 ~ 5 " folding strength, higher all compared with comparative example 2 of percentage elongation, and wiredrawn edge cracking rate is on the low side, wherein, embodiment 5 " folding strength, percentage elongation the highest, wiredrawn edge cracking rate is minimum.
Embodiment 6 ~ 6 " compared with comparative example 4, the interpolation ratio of talcum powder and ore deposit fibre is comparatively large, therefore, embodiment 6 ~ 6 " the speed of a motor vehicle apparently higher than comparative example 4, and embodiment 6 " the speed of a motor vehicle reach the highest.
Embodiment 7,7 ' is compared with comparative example 5, and the freedom of LBKP slurry is higher, and therefore, the speed of a motor vehicle of embodiment 7,7 ' is apparently higher than comparative example 5.
Claims (10)
1. the manufacture craft of superelevation bulk cupstock, comprise slurrying, condiment, manufacture paper with pulp, it is characterized in that: described slurrying comprises manufacture surface layer, bottom and sandwich layer three layers of slurries, and described surface layer slurries are made up of the raw material of following percentage by weight: LBKP 70 ~ 75%, NBKP 25 ~ 30%; Described bottom slurries are made up of the raw material of following percentage by weight: LBKP 65 ~ 70%, NBKP 30 ~ 35%; Described sandwich layer slurries are made up of following raw material: LBKP 20 ~ 30%, NBKP 10 ~ 15%, APMP 60 ~ 65%; The bulk of described APMP slurry is 3.5 ~ 3.7cm
3/ g, tensile strength is 14 ~ 16Nm/g;
Described manufacture paper with pulp be by condiment after three layers of slurries send into paper machines and carry out compound and manufacture paper with pulp, surface layer is quantitatively 25 ~ 35g/ ㎡, and sandwich layer is quantitatively 110 ~ 130g/ ㎡, and bottom is quantitatively 35 ~ 45g/ ㎡.
2. the manufacture craft of superelevation bulk cupstock according to claim 1, is characterized in that: described paper machine is fourdrinier paper machine, regulates the slurry network speed ratio of manufacturing paper with pulp in process to be 0.94 ~ 0.96.
3. the manufacture craft of superelevation bulk cupstock according to claim 2, is characterized in that: slurry network speed ratio is 0.95.
4. the manufacture craft of superelevation bulk cupstock according to claim 2, is characterized in that: in the process of manufacturing paper with pulp, and the online concentration regulating surface layer and bottom slurries is 0.34 ~ 0.36%, and the online concentration of sandwich layer slurries is 0.8 ~ 0.9%.
5. the manufacture craft of superelevation bulk cupstock according to claim 4, is characterized in that: the online concentration of surface layer and bottom slurries is 0.35%, and the online concentration of sandwich layer slurries is 0.9%.
6. the manufacture craft of superelevation bulk cupstock according to claim 1, it is characterized in that: described condiment comprises adding to be filled out, describedly add that to fill out be that in sandwich layer slurries, add talcum powder and ore deposit fine, both total amounts are 150 ~ 200kg/t sandwich layer slurries, and the weight ratio of talcum powder and ore deposit fibre is 2 ~ 4:1.
7. the manufacture craft of superelevation bulk cupstock according to claim 6, is characterized in that: the weight ratio of talcum powder and ore deposit fibre is 3:1.
8. the manufacture craft of superelevation bulk cupstock according to claim 7, is characterized in that: the freedom of LBKP is 370 ~ 400ml, the freedom of NBKP is 300 ~ 330ml, the freedom of APMP is 300 ~ 330ml.
9. the manufacture craft of the superelevation bulk cupstock according to any one of claim 1 ~ 8, it is characterized in that: described condiment also comprises applying glue, described applying glue adds rosin and aluminum sulfate respectively in three layers of slurries, rosin consumption is 15 ~ 20g/t slurries, and addition of aluminum sulfate is 15 ~ 25g/t slurries.
10. the manufacture craft of the superelevation bulk cupstock according to any one of claim 1 ~ 8, is characterized in that: described surface layer is made up of the slurry of following percentage by weight: LBKP 72%, NBKP 28%; Described bottom is made up of the slurry of following percentage by weight: LBKP68%, NBKP 32%; Described sandwich layer is made up of following parts by weight paste: LBKP 25%, NBKP 10%, APMP 65%.
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Application publication date: 20150916 |