CN109706778B - Production process of engineering copying base paper - Google Patents
Production process of engineering copying base paper Download PDFInfo
- Publication number
- CN109706778B CN109706778B CN201811588463.9A CN201811588463A CN109706778B CN 109706778 B CN109706778 B CN 109706778B CN 201811588463 A CN201811588463 A CN 201811588463A CN 109706778 B CN109706778 B CN 109706778B
- Authority
- CN
- China
- Prior art keywords
- pulp
- drying
- paper
- sizing
- ton
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Paper (AREA)
Abstract
The invention relates to the field of papermaking, in particular to a production process of engineering copy base paper, which can replace blueprint base paper, and the production process takes needle chemical pulp, broad-leaf chemical pulp and mechanical chemical pulp as raw materials, adds anionic garbage treatment agent, brightening agent, pigment, sizing agent, filler and the like for mixing, then sprays the mixture to a net part through a head box for dehydration, and then sequentially carries out press dehydration, drying in a front drying area, sizing by a surface sizing machine, drying in a rear drying area, calendaring and finishing by a calendaring machine, and then rolls the mixture to obtain a finished product. Compared with the prior art, the paper has the characteristics of high strength, good stiffness, low water absorption, low expansion and contraction rate and the like, and can well meet the use requirements of high-speed wide-width drawing copying and printing. The printing ink is used for a high-speed copier, has good printing effect and can completely replace blueprint paper.
Description
Technical Field
The invention relates to the field of papermaking, in particular to a production process of engineering copying base paper.
Background
Blueprint paper, also known as blueprint paper, is a chemical coating processing paper specially used for blueprint of various engineering designs and mechanical manufacturing, and is essential in production, scientific research and construction. The paper or cloth sensitized by ferricyanide and iron salt is usually exposed and then washed by clear water to develop the exposed photographic paper with blue background and white picture, especially for printing maps, mechanical pictures and architectural patterns. However, the conventional process for manufacturing blueprint paper uses an acid paper-making technique, thereby causing a great pollution to the environment. And in the subsequent blueprinting process, ammonia nitrogen gas can be generated, and further harm is caused to the ecological environment and human bodies. Meanwhile, blueprinting operation is complicated, production cost is high, and the requirement of large-scale use of the existing engineering drawings developed at a high speed cannot be met.
Disclosure of Invention
The invention provides a production process of engineering copy base paper, which can replace blueprint base paper, and the production process takes needle chemical pulp, broad-leaf chemical pulp and mechanical chemical pulp as raw materials, adds anion garbage treatment agent, whitening agent, pigment, sizing agent, filler and the like for mixing, then sprays the mixture to a net part through a head box for dehydration, and then sequentially carries out press dehydration, drying in a front drying area, sizing by a surface sizing machine, drying in a rear drying area and calendaring and finishing by a calendaring machine, and then rolls up to obtain a finished product. The paper has the characteristics of high strength, good stiffness, low water absorption, low expansion ratio and the like, and can well meet the use requirements of high-speed wide-width drawing copying and printing. The printing ink is used for a high-speed copier, has good printing effect and can completely replace blueprint paper.
The invention provides a production process of engineering copying base paper, which can replace blueprint base paper, and the paper prepared by the method has the characteristics of high strength, good stiffness, low water absorption, low expansion ratio and the like, and can well meet the use requirements of high-speed wide-width drawing copying and printing.
The specific production process of the invention is as follows:
a production process of engineering copy base paper comprises the following specific steps:
(1) preparation of a slurry raw material: the weight percentages of all the sizing agents are as follows:
22-35% of needle-leaf chemical pulp, 60-75% of broad-leaf chemical pulp and the balance of chemi-mechanical pulp;
(2) a papermaking process: pulping the pulp raw materials according to a proportion, wherein the needle chemical pulp is pulped to 46-50 DEG SR, the broad-leaf chemical pulp is pulped to 20-25 DEG SR, the chemical mechanical pulp is pulped to 48-52 DEG SR, and then conveying the pulped pulp to a mixed pulp tank and uniformly mixing the pulp according to the proportion;
adding the following components into a mixed pulp tank: polyaluminium chloride with the concentration of 10wt% is used as an anion garbage treating agent, and the dosage of the polyaluminium chloride is 0.2-0.3 kg/ton pulp; a whitening agent with the fluorescence intensity of 34% is used in an amount of 5-7 kg/ton of pulp, the pulp obtained by fully and uniformly mixing the substances is pumped into a pre-papermaking pool, and 0.12-0.15 kg/ton of pulp of pigment blue and 0.08-0.1 kg/ton of pulp of pigment violet are sequentially added; 0.7-1.0 kg/ton of ASA pulp internal sizing agent; 65-grade ground calcium carbonate filler, wherein the dosage of the filler is 140-160 kg per ton of pulp; the dosage of the modified high-molecular cationic tapioca starch is 12-15 kg/ton pulp; 0.3-0.4 kg of polyacrylamide retention aid per ton of pulp and 2-3 kg of bentonite filter aid with whiteness of 70 percent per ton of pulp;
then spraying the mixture to a net part through a head box for dehydration, and then sequentially carrying out press dehydration, drying in a front drying area, sizing by a surface sizing machine, drying in a rear drying area, calendaring and finishing by a calender and then reeling to obtain a finished product;
the specific step parameters are as follows:
a. dewatering the wire part: the slurry with the weight concentration of 0.68 percent is sprayed to a forming wire through a slurry flowing box, and is dehydrated through a dehydration panel under the forming wire and four low-pressure vacuum box panels with the vacuum degrees of-5 to-6 kpa, -11 to-13 kpa, -15 to-16 kpa and-18 to-19 kpa in sequence, and then enters a lapping former for further dehydration and then enters a vacuum couch roll;
b. dewatering in a pressing part: after the wet paper sheet is further dehydrated by a vacuum couch roll with the vacuum degree of-52 to-53 kpa, the wet paper sheet is guided to a suction felt by a suction vacuum roll with the vacuum degree of-44 to-45 kpa, and the paper sheet dryness reaches 48 to 49 percent after the wet paper sheet is further dehydrated by a three-roll two-pressure area consisting of a vacuum press roll (high pressure-51 to-52 kpa, low pressure-43 to-44 kpa) and two grooved rolls;
c. drying in a pre-drying area: gradually increasing the temperature of the drying cylinder from front to back, controlling the temperature to be 50-90 ℃, entering the wet paper sheet out of the pre-drying area, and controlling the water content of the paper sheet out of the drying area to be 3.5-4%;
d. surface sizing, namely feeding paper sheets in the forming process into a 45-degree inclined-line sizing machine, metering the surface sizing agent glue solution with the weight concentration of 8 percent on a sizing roller by a 03-groove sizing rod, and uniformly metering the glue solution with the amount of 37-43 g/m2The surface sizing agent glue solution is coated on the surface of the paper;
wherein the proportion of the surface sizing agent glue solution is as follows: starch: styrene-acrylic surface sizing agent: hexasulfonic acid whitening agent: blue pigment: 39-42 parts of purple pigment: 2.5-2.7: 2.9-3.1: 0.012-0.015: 0.008 to 0.01; unit is kg/ton paper; after the components are mixed according to the proportion, a roller is added on the surface sizing agent glue solution which is adjusted to have the weight concentration of 8% by adding water;
c. and (3) drying in a post-drying area: gradually increasing the temperature of the drying cylinder from front to back, controlling the temperature to be 45-90 ℃, enabling the paper sheets after glue application by the glue applicator to enter a post-drying area, and controlling the water content of the paper sheets out of the post-drying area to be 5-6%;
d. press polishing, coiling and cutting: and the paper sheet out of the drying part is calendered by a hard-nip calender, reeled by a reeling machine, cut and rewound by a rewinding machine to obtain a finished product, and the finished product is packaged and stored.
Further, the polyaluminum chloride is used as an anionic garbage treatment agent, can effectively treat resin and anionic garbage in a system, seizes ASA hydrolysate, and contributes to retention of particles of ASA emulsion on fibers.
Furthermore, the bentonite is used as a filter aid, the main index granularity (round screen passing rate of 45 mu m) of the bentonite is not less than 99.5%, the whiteness is not less than 70%, and the bentonite is matched with a retention aid PAM to form a binary retention and drainage aid system, so that the bentonite can effectively adsorb fine fibers and fillers, improve the drainage performance, and is beneficial to reducing the cost due to low price.
Further, the internal sizing agent is a neutral sizing agent ASA (effective content is 100%) emulsion product, the whitening agent is a disulfonic acid whitening agent product with high fluorescence intensity, and pigment blue and pigment violet are sun-proof grade eight products; in the process of making paper, the neutral sizing technology is adopted to be beneficial to long-term storage of paper, and meanwhile, the pigment with high sun-proof level is also beneficial to ensuring that the hue of the paper does not change greatly for a long time, so that the long-term storage of the drawing is facilitated.
Furthermore, in the surface sizing technology, in order to ensure better water resistance of paper sheets, a styrene-acrylic surface sizing agent which takes water resistance as a main part and enhancement as an auxiliary part is added into surface sizing starch; because the whiteness of the produced paper is high, the requirement cannot be met only by adding a whitening agent and a coloring pigment into pulp, 2.9-3.1 kg/ton of a hexa-sulfonic acid whitening agent and purple and blue pigments are added into surface sizing liquid, and the addition amount of the coloring pigment is interlocked with a hue detector control system of finished paper to finely adjust the hue of the paper. Therefore, the surface sizing agent mainly with water resistance is added, so that the surface water resistance of the paper is ensured, and the warping problem caused by high environmental humidity in the copying process is reduced. Meanwhile, a small amount of coloring agents are added in the surface sizing process, so that the color difference of the same batch of paper can be effectively avoided, the uniform coloring of the raw paper by the dye in the downstream customer processing process is facilitated, and the problem of color spots caused by nonuniform coloring and the influence on the visual effect are avoided.
Furthermore, the high-dispersity calcium carbonate filler is prepared by fully mixing high-molecular-weight and high-strength cationic starch with the filler on line, and forming a mixture with positive electric property with the filler by utilizing the self groups of the high-molecular-weight and high-strength cationic starch, namely wrapping a plurality of calcium carbonate particles by the high-molecular-weight cationic starch, so that the particle size of the calcium carbonate filler is increased, the mixture enters a pulp pipeline and then is crosslinked with other fine fibers and the like to form a certain bonding force, the loss of the fine fibers and the filler is reduced, the adverse effects of the filler on the strength and the stiffness of finished paper are reduced to the maximum extent, and the strength index of the finished paper is improved.
The technical scheme of the invention is mainly used for solving the problems of the blueprint paper and meeting the increasing demands of the market on high-quality engineering drawings. The paper prepared by the technical method is used for a high-speed copier, has good printing effect and can completely replace blueprint paper. The successful development of the product fills the blank of domestic high-grade engineering copying base paper and meets the huge market demand of domestic engineering copying base paper. The product quality reaches the quality level of imported like products.
Detailed Description
Description of the raw materials used in the examples
The anionic garbage treating agent is polyaluminium chloride with model number DY-A produced by Shandong Dongyo
The whitening agent is disulfonic acid whitening agent of HL-B type produced by Shanxi Sanshuihui river science and technology Limited
The pigment is Blue pigment of Cartaren Blue BLF-CN and purple pigment of Cartaren tinting Violet BN pa produced by high chemical engineering (China) Limited
The sizing agent is a product of type fennesize AS2300 manufactured by Kalima (Shanghai) management Co., Ltd
The retention aid is a product of Percol 182, model number of Pasteur Chemicals Ltd
The filter aid is bentonite with BT-28 type produced by Zhejiang Changren constant science and technology GmbH
The starch in the pulp is Geltron 28-type high molecular cassava modified starch produced by Thailand Universal starch industry Co
The surface sizing agent is a BDsize 8028 styrene-acrylic product of Shanghai Baidi chemical Co Ltd
Index checking basis involved in the embodiment
Quantitative determination (g/m) in the present invention2) Detecting according to GB451.2-89 standard
Whiteness (%) was measured according to GB/T7974-87 standard
Tightness (g/cm)3) Detecting according to GB451.3-89 standard
Detecting the normal/reverse smoothness(s) according to the GB456-89 standard
Water absorption (g/m)2) Detecting according to GB451.3-89 standard
The water resistance(s) is detected according to the GB460-89 standard
The longitudinal/transverse folding resistance (secondary) is detected according to the GB457-89 standard
The fracture length (m) is detected according to GB453-89 standard
The stiffness (mN.m) is measured according to GB/T2679.3 standard
The transverse expansion and contraction rate (%) was measured according to GB45-89 standard
All percentages referred to in the examples are percentages by weight, unless otherwise indicated
Example 1
A production process of engineering copy base paper comprises the following specific steps:
(1) preparation of a slurry raw material: the mixture ratio of the various sizing agents is as follows: 30% of needle-leaf chemical pulp, 67% of broad-leaf chemical pulp and 3% of chemi-mechanical pulp.
(2) A papermaking process: pulping the pulp raw materials according to a proportion, wherein the needle-leaved chemical pulp is pulped to 46-degree SR, the broad-leaved chemical pulp is pulped to 25-degree SR, and the chemical mechanical pulp is pulped to 48-degree SR, and then conveying the pulped pulp to a mixed pulp tank and uniformly mixing the pulp according to the proportion; adding 0.27 kg/ton pulp of anionic garbage treating agent and 5.6 kg/ton pulp of whitening agent into the mixed pulp tank, and uniformly mixing; and pumping the fully and uniformly mixed slurry into a papermaking front pool, and sequentially adding 0.13 kg/ton of slurry of pigment blue, 0.1 kg/ton of slurry of pigment violet, 0.75 kg/ton of slurry of ASA slurry internal sizing agent, 150 kg/ton of slurry of filler, 14 kg/ton of slurry of high molecular weight and high strength cationic starch, 0.35 kg/ton of slurry of retention aid and 2.8 kg/ton of slurry of filter aid. Then the mixture is sprayed to a net part through a head box for dehydration, and then is rolled to obtain a finished product after being sequentially subjected to press dehydration, drying in a front drying area, sizing by a surface sizing machine, drying in a rear drying area, and calendaring and finishing by a calender.
a. Dewatering the wire part: and the slurry with the weight concentration of 0.68 percent is sprayed to a forming wire through a slurry flowing box, and is dehydrated through a dehydration panel under the forming wire and four low-pressure vacuum box panels with the vacuum degrees of-5 kpa, -12kpa, -15kpa and-18 kpa in sequence, and then enters a lapping former for further dehydration and finally reaches a vacuum couch roll.
b. Dewatering in a pressing part: after the wet paper sheet is further dewatered by a vacuum couch roll with the vacuum degree of minus 53kpa, the wet paper sheet is guided to a suction felt by a suction vacuum roll with the vacuum degree of minus 45kpa, and the paper sheet dryness reaches 48 percent after the wet paper sheet is further dewatered by a three-roll two-nip formed by a vacuum press roll (with the high pressure of minus 51.6kpa and the low pressure of minus 43kpa) and two grooved rolls.
c. Drying in a pre-drying area: the number of the drying cylinders in the part is 39, the temperature of the drying cylinders is gradually increased from front to back, the temperature is controlled to be 50-90 ℃, the wet paper sheet enters the pre-drying area, and the water content of the paper sheet is controlled to be 3.8 percent.
d. Surface sizing, namely feeding paper sheets in the forming process into a 45-degree inclined-type sizing machine, metering the glue solution with the weight concentration of 8 percent on a sizing roller by a 03-groove sizing rod, and uniformly adding the glue solution with the amount of 38g/m2The surface glue solution is coated on the surface of the paper;
wherein the proportion of the surface sizing liquid used is (unit kg/ton paper): starch: styrene-acrylic surface sizing agent: hexasulfonic acid whitening agent: blue pigment: purple pigment 40: 2.5: 2.9: 0.013: 0.01; after the components are mixed according to the proportion, a roller is added on the surface sizing agent glue solution which is adjusted to have the weight concentration of 8% by adding water;
e. and (3) drying in a post-drying area: the temperature of the drying cylinders is gradually increased from front to back, the temperature is controlled to be 45-90 ℃, the paper sheets which are sized by the sizing machine enter a post-drying area, and the water content of the paper sheets which are discharged from the drying area is controlled to be 5.2%.
f. Press polishing, coiling and cutting: and the paper sheet out of the drying part is calendered by a hard-nip calender, reeled by a reeling machine, cut and rewound by a rewinding machine to obtain a finished product, and the finished product is packaged and stored.
Example 2
A production process of engineering copy base paper comprises the following specific steps:
(1) preparation of a slurry raw material: the mixture ratio of the various sizing agents is as follows: 30% of needle chemical pulp, 65% of broad-leaf chemical pulp and 5% of chemi-mechanical pulp.
(2) A papermaking process: pulping the pulp raw materials according to a proportion, wherein the needle-leaved chemical pulp is pulped to 50 DEG SR, the broad-leaved chemical pulp is pulped to 21 DEG SR, and the chemical mechanical pulp is pulped to 52 DEG SR, and then conveying the pulped pulp to a mixed pulp tank and uniformly mixing the pulp according to the proportion; adding 0.3 kg/ton pulp of anionic garbage treating agent and 6.0 kg/ton pulp of whitening agent into the mixed pulp tank, and uniformly mixing; the fully and uniformly mixed slurry is pumped into a pulp front pool, and then 0.135kg of pigment blue per ton of slurry, 0.108kg of pigment violet per ton of slurry, 0.79kg of ASA (acrylonitrile-styrene-acrylate copolymer) internal sizing agent per ton of slurry, 157kg of filler per ton of slurry are sequentially added to be mixed with 14.5kg of cationic starch with high molecular weight and high strength per ton of slurry, 0.36kg of retention aid per ton of slurry and 2.9kg of filter aid per ton of slurry. Then the mixture is sprayed to a net part through a head box for dehydration, and then is rolled to obtain a finished product after being sequentially subjected to press dehydration, drying in a front drying area, sizing by a surface sizing machine, drying in a rear drying area, and calendaring and finishing by a calender.
a. Dewatering the wire part: and the slurry with the weight concentration of 0.68 percent is sprayed to a forming wire through a slurry flowing box, and is dehydrated through a dehydration panel under the forming wire and four low-pressure vacuum box panels with the vacuum degrees of-5 kpa, -13kpa, -16kpa and-18 kpa in sequence, and then enters a lapping former for further dehydration and finally reaches a vacuum couch roll.
b. Dewatering in a pressing part: after the wet paper sheet is further dewatered by a vacuum couch roll with the vacuum degree of-54 kpa, the wet paper sheet is guided to a suction felt by a suction vacuum roll with the vacuum degree of-46 kpa, and the paper sheet dryness reaches 48 percent after the wet paper sheet is further dewatered by a three-roll two-nip formed by a vacuum press roll (high pressure of-52 kpa and low pressure of-43 kpa) and two grooved rolls.
c. Drying in a pre-drying area: the number of the drying cylinders in the part is 39, the temperature of the drying cylinders is gradually increased from front to back, the temperature is controlled to be 50-90 ℃, the wet paper sheet enters the pre-drying area, and the water content of the paper sheet is controlled to be 3.8 percent.
d. Surface sizing, namely feeding paper sheets in the forming process into an inclined-line sizing machine with an angle of 45 degrees, wherein the weight concentration of the paper sheets after being adjusted on a sizing machine is 8 percentThe glue solution is measured by a 03-groove glue applying rod, and the glue solution is uniformly mixed to 42g/m2The surface glue solution is coated on the surface of the paper;
wherein the proportion of the surface sizing liquid used is (unit kg/ton paper): starch: styrene-acrylic surface sizing agent: hexasulfonic acid whitening agent: blue pigment: purple pigment 41: 2.7: 3.0: 0.014: 0.008; after the components are mixed according to the proportion, a roller is added on the surface sizing agent glue solution which is adjusted to have the weight concentration of 8% by adding water;
e. and (3) drying in a post-drying area: the temperature of the drying cylinders is gradually increased from front to back, the temperature is controlled to be 45-90 ℃, the paper sheets which are sized by the sizing machine enter a post-drying area, and the water content of the paper sheets which are discharged from the drying area is controlled to be 5.3%.
f. Press polishing, coiling and cutting: and the paper sheet out of the drying part is calendered by a hard-nip calender, reeled by a reeling machine, cut and rewound by a rewinding machine to obtain a finished product, and the finished product is packaged and stored.
TABLE 1 comparison of data on various indexes of blueprint base paper and examples 1 and 2
| Blueprint base paper | Embodiment 1 | Example II | |
| Quantitative g/m2 | 79.8 | 79.6 | 79.5 |
| Whiteness% | 94.3 | 94.5 | 94.4 |
| a value | 2.65 | 2.67 | 2.69 |
| b value | -14.9 | -15.0 | -14.8 |
| Tightness g/m3 | 0.78 | 0.76 | 0.75 |
| Smoothness (normal/reverse) s | 42/33 | 45/36 | 47/39 |
| Water absorption g/m2 | 18.5 | 17 | 16 |
| Water resistance s | 35 | 37 | 39 |
| Folding strength (longitudinal/transverse) times | 106/55 | 110/59 | 113/61 |
| Length of fracture m | 6100 | 6190 | 6210 |
| Stiffness mN | 100 | 107 | 110 |
| Transverse expansion ratio% | 2.4 | 2.2 | 2.3 |
| Ash content% | 12.0 | 12.3 | 12.2 |
Note: a. b refers to the colorimetric value of the paper color, i.e., the color space coordinate of the paper color, where a represents red and green (red is a positive value and green is a negative value), and b represents yellow and blue (yellow is a positive value and blue is a negative value).
As can be seen from the comparison of data of various indexes of the blueprint base paper in the table 1 and the examples 1 and 2, the smoothness, the water resistance, the stiffness and the strength of the examples 1 and 2 are obviously higher than those of the blueprint base paper, and the water absorption and the expansion rate of the examples are lower than those of the blueprint base paper, so that the characteristics can well meet the use requirements of high-speed wide-width printing paper copying and printing, and the performance of the blueprint base paper is better than that of the blueprint base paper. Moreover, the beating degree of the needle-leaved chemical pulp is properly improved, the beating degree of the broad-leaved chemical pulp is reduced, and meanwhile, the chemi-mechanical pulp is subjected to high beating, so that the good fiber uniformity of the mixed pulp can be ensured, a certain bulk can be provided for finished paper, and the paper is endowed with the characteristics of smooth and fine surface and the like while the physical strength of the paper is improved. Meanwhile, by adjusting the dosage of chemicals such as sizing agent, starch in the pulp, retention aid, filter aid, colorant and the like, the water resistance of the paper is improved and the stability of the hue of the paper is ensured under the condition of ensuring the stability of ash of the paper.
Therefore, from the view of finished product data, all indexes of the blueprint base paper reach and are superior to the quality requirements of blueprint base paper, and the blueprint base paper can be completely replaced.
Claims (1)
1. A production process of engineering copying base paper is characterized by comprising the following steps: the method comprises the following specific steps:
(1) preparation of a slurry raw material: the weight percentages of all the sizing agents are as follows:
22-35% of needle-leaf chemical pulp, 60-75% of broad-leaf chemical pulp and the balance of chemi-mechanical pulp;
(2) a papermaking process: pulping the pulp raw materials according to a proportion, wherein the needle-leaved chemical pulp is pulped to 46-50 DEGoPulping SR, broad leaf chemical pulp to 20-25oPulping SR, chemical mechanical pulp to 48-52oSR, then conveying the pulped pulp to a mixed pulp tank and uniformly mixing the pulp in proportion;
adding the following components into a mixed pulp tank: polyaluminium chloride with the concentration of 10wt% is used as an anion garbage treating agent, and the dosage of the polyaluminium chloride is 0.2-0.3 kg/ton pulp; a whitening agent with the fluorescence intensity of 34% is used in an amount of 5-7 kg/ton of pulp, the pulp obtained by fully and uniformly mixing the substances is pumped into a pre-papermaking pool, and 0.12-0.15 kg/ton of pulp of pigment blue and 0.08-0.1 kg/ton of pulp of pigment violet are sequentially added; 0.7-1.0 kg/ton of ASA pulp internal sizing agent; 65-grade ground calcium carbonate filler, wherein the dosage of the filler is 140-160 kg per ton of pulp; the dosage of the modified high-molecular cationic tapioca starch is 12-15 kg/ton pulp; 0.3-0.4 kg of polyacrylamide retention aid per ton of pulp and 2-3 kg of bentonite filter aid with whiteness of 70 percent per ton of pulp;
then spraying the mixture to a net part through a head box for dehydration, and then sequentially carrying out press dehydration, drying in a front drying area, sizing by a surface sizing machine, drying in a rear drying area, calendaring and finishing by a calender and then reeling to obtain a finished product; the specific steps of the wire part dehydration, the press dehydration, the drying in the pre-drying area, the sizing by a surface sizing machine, the drying in the post-drying area and the calendaring by a calender are as follows:
a. dewatering the wire part: the slurry with the weight concentration of 0.68 percent is sprayed to a forming wire through a slurry flowing box, and is dehydrated through a dehydration panel under the forming wire and four low-pressure vacuum box panels with the vacuum degrees of-5 to-6 kPa, -11 to-13 kPa, -15 to-16 kPa and-18 to-19 kPa in sequence, and then enters a lapping former for further dehydration and then enters a vacuum couch roll;
b. squeezing and dewatering: after the wet paper sheet is further dehydrated by a vacuum couch roll with the vacuum degree of-52 to-53 kPa, the wet paper sheet is led to a suction felt by a suction vacuum roll with the vacuum degree of-44 to-45 kPa, and after the wet paper sheet is further dehydrated by a three-roll two-nip region consisting of a vacuum press roll and two grooved rolls, the dryness of the paper sheet reaches 48 to 49 percent;
c. drying in a pre-drying area: gradually increasing the temperature of the drying cylinder from front to back, controlling the temperature to be 50-90 ℃, entering the wet paper sheet out of the pre-drying area, and controlling the water content of the paper sheet out of the drying area to be 3.5-4%;
d. surface sizing, namely feeding paper sheets in the forming process into a 45-degree inclined-type sizing machine, metering the surface sizing agent glue solution with the weight concentration of 8 percent after being adjusted on a sizing roller by a 03-groove sizing rod, and uniformly metering the glue solution with the amount of 37-43 g/m2Coating the surface sizing agent glue solution on the surface of the paper;
e. and (3) drying in a post-drying area: gradually increasing the temperature of the drying cylinder from front to back, controlling the temperature to be 45-90 ℃, enabling the paper sheets after glue application by the glue applicator to enter a post-drying area, and controlling the water content of the paper sheets out of the post-drying area to be 5-6%;
f. press polishing, coiling and cutting: the paper sheet out of the drying part is calendered by a hard nip calender, reeled by a reeling machine, cut and rewound by a rewinding machine to form a finished product, and packaged and put in storage;
the proportion of the surface sizing agent glue solution is as follows: starch: styrene-acrylic surface sizing agent: hexasulfonic acid whitening agent: blue pigment: violet pigment = 39-42: 2.5-2.7: 2.9-3.1: 0.012-0.015: 0.008-0.01; unit is kg/ton paper; after the components are mixed according to the proportion, a roller is added on the surface sizing agent glue solution which is adjusted to have the weight concentration of 8% by adding water;
the internal sizing agent is a neutral sizing agent ASA emulsion product, the whitening agent is a disulfonic acid whitening agent product with high fluorescence intensity, and the pigment blue and the pigment violet are sun-proof grade eight products.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811588463.9A CN109706778B (en) | 2018-12-25 | 2018-12-25 | Production process of engineering copying base paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811588463.9A CN109706778B (en) | 2018-12-25 | 2018-12-25 | Production process of engineering copying base paper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109706778A CN109706778A (en) | 2019-05-03 |
| CN109706778B true CN109706778B (en) | 2021-06-18 |
Family
ID=66257465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811588463.9A Active CN109706778B (en) | 2018-12-25 | 2018-12-25 | Production process of engineering copying base paper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109706778B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111705543B (en) * | 2020-05-28 | 2022-06-21 | 仙鹤股份有限公司 | Preparation method of high-whiteness high-strength carbonless copy paper base paper |
| CN112553941A (en) * | 2020-11-09 | 2021-03-26 | 山东华泰纸业股份有限公司 | Production process of ink jet printing paper |
| CN112609503A (en) * | 2020-12-10 | 2021-04-06 | 岳阳林纸股份有限公司 | Surface sizing solution for electrostatic copying paper and application |
| CN113047075A (en) * | 2021-03-25 | 2021-06-29 | 浙江龙游太平纸业有限公司 | Preparation process of high-quality engineering base paper for wide drawings |
| CN113756133B (en) * | 2021-09-13 | 2022-07-12 | 亚太森博(广东)纸业有限公司 | Production method and production equipment for controlling paper warping and paper |
| CN115710833B (en) * | 2022-11-09 | 2023-05-12 | 中冶纸业银河有限公司 | Wallpaper base paper production device and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101691701A (en) * | 2009-10-14 | 2010-04-07 | 福建省晋江优兰发纸业有限公司 | Method for producing environment-friendly electrostatic copying paper |
| CN101691702A (en) * | 2009-10-14 | 2010-04-07 | 福建省晋江优兰发纸业有限公司 | High thickness beige electrostatic copying paper and production method thereof |
| CN102154928A (en) * | 2011-03-16 | 2011-08-17 | 亚太纸业（广东）有限公司 | High-whiteness reproducing paper and preparation method thereof |
| CN103184709A (en) * | 2011-12-28 | 2013-07-03 | 康吉诺（北京）科技有限公司 | Manufacturing method for environment-friendly carbonless copy base paper |
| CN105586802A (en) * | 2016-02-19 | 2016-05-18 | 岳阳林纸股份有限公司 | Manufacturing method of Pinfeng base paper |
-
2018
- 2018-12-25 CN CN201811588463.9A patent/CN109706778B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101691701A (en) * | 2009-10-14 | 2010-04-07 | 福建省晋江优兰发纸业有限公司 | Method for producing environment-friendly electrostatic copying paper |
| CN101691702A (en) * | 2009-10-14 | 2010-04-07 | 福建省晋江优兰发纸业有限公司 | High thickness beige electrostatic copying paper and production method thereof |
| CN102154928A (en) * | 2011-03-16 | 2011-08-17 | 亚太纸业（广东）有限公司 | High-whiteness reproducing paper and preparation method thereof |
| CN103184709A (en) * | 2011-12-28 | 2013-07-03 | 康吉诺（北京）科技有限公司 | Manufacturing method for environment-friendly carbonless copy base paper |
| CN105586802A (en) * | 2016-02-19 | 2016-05-18 | 岳阳林纸股份有限公司 | Manufacturing method of Pinfeng base paper |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109706778A (en) | 2019-05-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109706778B (en) | Production process of engineering copying base paper | |
| CN101255662B (en) | Method for producing metallic high temperature transfer base paper | |
| CN102212983B (en) | High-intensity environment-friendly craft paper and manufacturing method thereof | |
| CN105316977A (en) | A manufacturing process method for cardboard paper with a printing surface layer | |
| CN103321096B (en) | A kind of coated white cardboard and production technology thereof | |
| CN102277776B (en) | Method for making slightly-coated elegant pure paper | |
| CN110130142B (en) | Low-gram-weight digital ink-jet transfer printing base paper and production method thereof | |
| CN104389235A (en) | Low-quantification and high-strength coating white board paper and preparation process thereof | |
| CN106894291B (en) | A kind of manufacturing method of glass barrier paper | |
| CN113089362B (en) | Method for producing wine label base paper by fourdrinier vat paper machine | |
| CN104846684B (en) | Environment-friendly plastics-absorption double-surface coated white board paper and preparation technology thereof | |
| CN105839465A (en) | Manufacturing method heat sublimation transfer printing paper | |
| CN111005262B (en) | All-cotton transfer printing base paper and production method thereof | |
| CN106087523B (en) | A kind of papermaking process of on-line coater water-transfer printing paper base stock body paper | |
| CN106894277A (en) | A kind of manufacture method of lottery ticket dedicated raw paper | |
| CN104213469B (en) | Micro-retractility printed form decorating base paper and preparation method thereof | |
| CN105970716A (en) | Method for making manual watercolour paper | |
| CN105088897A (en) | Novel coating paper and preparation method thereof | |
| CN108316045B (en) | Natural color transfer printing base paper production method | |
| CN102704345A (en) | Method for making trace coated offset paper | |
| CN108411704A (en) | A kind of high interfacial bonding strength dumb light U.S. line paper and preparation method thereof | |
| CN110820412A (en) | Formula and preparation method of high-strength ivory board | |
| CN108277695A (en) | A kind of manufacturing method of frosted body paper | |
| CN107513879A (en) | A kind of recycling reuse method of mthod of white water from paper making anionic trash | |
| CN109457545A (en) | A kind of production technology of the kraft liner board of high brightness |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20190503 Assignee: RIZHAO HUATAI PAPER Co.,Ltd. Assignor: SHANDONG HUATAI PAPER Co.,Ltd. Contract record no.: X2022980012111 Denomination of invention: A production process of engineering copy base paper Granted publication date: 20210618 License type: Common License Record date: 20220809 |