CN115652685A - Surface layer antistatic paper for paper tube and preparation process thereof - Google Patents
Surface layer antistatic paper for paper tube and preparation process thereof Download PDFInfo
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Abstract
The invention belongs to the technical field of papermaking, and particularly relates to surface layer antistatic paper for a paper tube and a preparation process thereof, wherein the quantitative amount of the surface layer antistatic paper for the paper tube is 60g/m 2 The allowable error range of the horizontal quantification is +/-1.0 percent, and the allowable error range of the longitudinal quantification is +/-1.2 percent; the front smoothness is 70-90s; the smoothness of the back surface is 10-30s; surface resistivity < 10 6 The breaking strength of omega cm is more than or equal to 300kPa; the longitudinal dry tensile strength is more than or equal to 40N/15mm; the longitudinal wet tensile strength is more than or equal to 15N/15mm; the air permeability is more than or equal to 10 mu m/Pa.s; the surface absorbency is 20-30%; the dryness of the finished paper is 92-94%; surface antistatic for paper tubeThe paper preparation process comprises pulping, auxiliary material adding, drifting, papermaking, rewinding and packaging; compared with the prior art, the antistatic adhesive has the advantages of good antistatic effect, smooth and flat surface, good adhesion, higher tension and the like.
Description
Technical Field
The invention belongs to the technical field of papermaking, and particularly relates to surface layer antistatic paper for a paper tube and a preparation process thereof.
Background
At present, the domestic paper tube industry is rapidly developed, and the paper tubes are widely applied to a plurality of fields and industries such as chemical fiber industry, film industry, printing industry, paper making industry, metallurgical industry and the like. In the chemical fiber industry, the paper tube is required to have smooth surface, low friction force between the paper tube and chemical fiber filaments, high cleanliness and static electricity prevention, while the existing paper tube has rough surface and large friction force between the paper tube and the chemical fiber filaments, the chemical fiber filaments at the bottommost layer are easy to hook and knot, and finally waste of the chemical fiber filaments is caused, meanwhile, the paper tube has rough surface and is easy to generate static electricity to adsorb dust, influence the cleanliness of the chemical fiber filaments, and the static electricity is easy to generate in the process of winding and unwinding.
At present, the parchment paper tube is mostly used in the chemical fiber industry, namely, one layer of parchment paper is coated on the surface of the paper tube, but the parchment paper has limited anti-static capacity and influences the performance of the paper tube, and the parchment paper has strong anti-penetration capacity to grease and water and poor adhesive absorption, so the problem of poor adhesion with the paper tube exists, and the cost is increased for chemical fiber by using the parchment paper tube.
Disclosure of Invention
Aiming at the problems, the invention provides surface layer antistatic paper for a paper tube and a preparation process thereof.
In order to achieve the purpose, the invention adopts the technical scheme that: a preparation process of surface layer antistatic paper for a paper tube comprises the following steps:
step one, pulping; firstly, respectively pulping bleached softwood pulp and bleached hardwood pulp by pulping, removing impurities and pulping, and then according to the bleached softwood pulp and the bleached hardwood pulp, the pulping process comprises the following steps of: 7, adding dispersed carbon fibers in the pulp preparation process, wherein the adding amount of the carbon fibers is 3-5% of the adding amount of each ton of paper to obtain mixed pulp, and finally diluting the mixed pulp to a concentration of 2.8%;
adding auxiliary materials; adding a dry strength agent and a wet strength agent into the diluted mixed slurry;
step three, flow transmission; the mixed slurry added with the dry strength agent and the wet strength agent in the step two sequentially passes through a desander, a pressure screen and a pulse attenuator and finally reaches a head box;
step four, papermaking; the method comprises the following steps of (1) adopting a single fourdrinier wire form, uniformly distributing slurry in a head box on a forming wire, then forming a wet paper web through dehydration, sequentially passing the wet paper web through a press part and a drying part, and finally carrying out calendaring and reeling to obtain base paper;
and fifthly, rewinding and packaging.
Preferably, the pulping comprises: respectively putting bleached softwood pulp and bleached hardwood pulp into a hydraulic pulper for pulping, wherein the pulping concentration is 4.0-5.0%, pulping and then respectively entering different beating front pools, removing impurities from the softwood pulp and the hardwood pulp through high-concentration slag removers, wherein the softwood pulp is longer in fiber, stiff and elastic in fiber, the wet weight of the fiber cannot be too high in the pulping process, and pulping by adopting a double-disc mill and a conical refiner in series, wherein the pulping degree is controlled to be 32 +/-1 DEG SR;
the hardwood pulp is thin and short, double disc grinding pulping is adopted, the fibrillation and devillicate brooming of the fiber are noticed in the pulping process, and the pulping degree is controlled to be 36 +/-1 DEG SR; beating softwood pulp and hardwood pulp, and then respectively entering corresponding beating pools;
according to softwood pulp and hardwood pulp 3:7, preparing pulp in a pulp preparation pool, selecting short carbon fibers with the length of 3-5mm, putting the short carbon fibers with the addition amount of 3% -5% of the addition amount of each ton of paper into water, adding low molecular weight polyacrylamide serving as a dispersing agent and an adhesive into the water, adding the mixture into the pulp preparation pool after uniform dispersion, fully mixing the mixture with the pulp in the pulp preparation pool, diluting the mixed pulp to the concentration of 2.8%, and then feeding the diluted pulp into a pre-papermaking pool.
Preferably, the auxiliary material addition comprises: adding a dry strength agent into a fore-papermaking pool, wherein the addition amount of the dry strength agent is 1.5-2.0% of the addition amount of each ton of paper; adding a wet strength agent into the fore-stock, wherein the addition amount of the wet strength agent is 2.0-2.5% of the addition amount of each ton of paper.
Preferably, the streaming comprises: the pulp in the pool before papermaking is treated by a first-stage three-section sand remover, then enters a pressure screen, then enters a head box through a pulse attenuator, the head box adopts a dilution water head box, and white water in a white water tank outside the machine needs to be treated by a white water pressure screen and then enters the head box to dilute the pulp in the head box.
Preferably, the papermaking comprises: papermaking adopts a single long net form, pulp is uniformly distributed on a forming net through a pulp flowing box, passes through a table roller, a table board, a wet suction box and a vacuum suction box, passes through a facing roller, and is finally dewatered through a dewatering element such as a vacuum couch roller to form a wet paper web; transferring the wet paper web to a pressing part through a vacuum suction transfer roll after passing through a vacuum couch roll, and then entering a drying part after passing through three-roll two-press-area compound pressing and one blind hole roll pressing, wherein the dryness of the paper web can reach 46-48 percent; after drying in the drying section, the dryness of the paper web can reach 92-94%, and after drying, the paper web is calendered by a double-nip soft calender and then is rolled to obtain the base paper.
Preferably, the rewinding and packaging comprises: and setting the rewinding speed at 1200m/min, the maximum rewinding width at 2700mm and the maximum rewinding diameter at 1300mm, and packaging after rewinding.
The utility model provides an utilize paper pipe for antistatic paper preparation technology preparation of surface layer antistatic paper the paper pipe for antistatic paper, the raw materials of the antistatic paper of surface layer for the paper pipe are bleaching softwood pulp, bleaching hardwood pulp and carbon fiber, the proportion of bleaching softwood pulp and bleaching hardwood pulp is 3:7; the addition amount of the carbon fiber is 3-5% of each ton of paper.
Compared with the prior art, the invention has the advantages and positive effects that:
(1) The prior paper tube is easy to generate static electricity, dust is easy to adsorb, and the cleanliness of chemical fiber threads is influenced, but the surface layer anti-static paper for the paper tube is made by mixing plant fibers and conductive fibers by a wet method, so that the paper tube has a good anti-static effect;
(2) The front surface of the anti-static paper for the surface layer of the paper tube has high smoothness, so that the surface can be ensured to be smooth and flat, and the back surface has low smoothness, so that good adhesion can be ensured;
(3) In the prior art, the glue absorption performance of parchment paper is poor, the air permeability of the surface layer anti-static paper for the paper tube is higher than that of the parchment paper, and the glue absorption performance is obviously improved compared with the parchment paper;
(4) The surface antistatic paper for the paper tube has higher dry tensile strength and wet tensile strength, can obtain higher tension in the tube coiling process, and improves the surface smoothness of the paper tube.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced as follows:
FIG. 1 is a flow chart of a process for preparing the surface antistatic paper for paper tubes provided in example 1.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and thus the present invention is not limited to the specific embodiments of the present disclosure.
Example 1
The invention is further described with reference to the attached figure 1, and a preparation process of surface layer antistatic paper for paper tubes is provided, wherein the steps for preparing the surface layer antistatic paper for the paper tubes are as follows:
step one, pulping; firstly, respectively pulping bleached softwood pulp and bleached hardwood pulp by pulping, impurity removal and pulping, and then according to the bleached softwood pulp and the bleached hardwood pulp 3:7, adding dispersed carbon fibers in the pulp preparation process, wherein the adding amount of the carbon fibers is 3-5% of the adding amount of each ton of paper to obtain mixed pulp, and finally diluting the mixed pulp to a concentration of 2.8%;
adding auxiliary materials; adding a dry strength agent and a wet strength agent into the diluted mixed slurry;
step three, flow transmission; the mixed slurry added with the dry strength agent and the wet strength agent in the step two sequentially passes through a desander, a pressure screen and a pulse attenuator and finally reaches a head box;
step four, papermaking; the method comprises the following steps of (1) adopting a single fourdrinier wire form, uniformly distributing slurry in a head box on a forming wire, then forming a wet paper web through dehydration, sequentially passing the wet paper web through a press part and a drying part, and finally carrying out calendaring and reeling to obtain base paper;
and fifthly, rewinding and packaging.
The pulping process comprises the following steps: respectively putting bleached softwood pulp and bleached hardwood pulp into a hydraulic pulper for pulping, wherein the pulping concentration is 4.0-5.0%, pulping and then respectively entering different beating front pools, removing impurities from the softwood pulp and the hardwood pulp through high-concentration slag removers, wherein the softwood pulp is longer in fiber, stiff and elastic in fiber, the wet weight of the fiber cannot be too high in the pulping process, and pulping by adopting a double-disc mill and a conical refiner in series, wherein the pulping degree is controlled to be 32 +/-1 DEG SR; the hardwood pulp is thin and short, double disc grinding pulping is adopted, the fibrillation and devillicate brooming of the fiber are noticed in the pulping process, and the pulping degree is controlled to be 36 +/-1 DEG SR; after the softwood pulp and the hardwood pulp are beaten, the softwood pulp and the hardwood pulp enter corresponding beating back pools respectively and are beaten according to the softwood pulp and the hardwood pulp 3:7, preparing pulp in a pulp preparation pool, selecting short carbon fibers with the length of 3-5mm, putting the short carbon fibers with the addition amount of 3-5% of the addition amount of each ton of paper into water, adding low molecular weight polyacrylamide serving as a dispersing agent and an adhesive into the water, adding the mixture into the pulp preparation pool after uniform dispersion, fully mixing the mixture with the pulp in the pulp preparation pool, diluting the mixed pulp to the concentration of 2.8%, and then feeding the diluted pulp into a pre-papermaking pool.
The softwood pulp is pulped by connecting the double-disc mill and the conical refiner in series, so that the fiber humidity can be reduced, and the paper forming performance is ensured; hardwood pulp is pulped by a double disc mill and is pulped under a medium-concentration condition, so that excessive fiber cutting can be well avoided.
The mixed slurry in the slurry preparation pool enters the fore-stock through a slurry extracting pipeline of a slurry extracting pump, and a concentration diluting device is arranged on the slurry extracting pipeline and can dilute the mixed slurry to the concentration of 2.8%.
The auxiliary material addition comprises: adding a dry strength agent into a pre-papermaking pool, wherein the addition amount of the dry strength agent is 1.5-2.0% of the addition amount of each ton of paper; adding a wet strength agent into the fore-stock, wherein the addition amount of the wet strength agent is 2.0-2.5% of the addition amount of each ton of paper.
The dry strength agent and the wet strength agent are added in the fore-stock pool, so that the dry tension and the wet tension of the paper can be increased.
The streaming comprises the following steps: the pulp in the pool before papermaking is treated by a first-stage three-section sand remover, then enters a pressure screen, then enters a head box through a pulse attenuator, the head box adopts a dilution water head box, and white water in a white water tank outside the machine needs to be treated by a white water pressure screen and then enters the head box to dilute the pulp in the head box.
Partial impurities still exist in the slurry in the pre-papermaking tank, and the partial impurities need to be removed through a first-stage three-section desander.
The papermaking method comprises the following steps: papermaking adopts a single long net form, pulp is uniformly distributed on a forming net through a pulp flowing box, passes through a table roller, a table board, a wet suction box and a vacuum suction box, passes through a facing roller, and is finally dewatered through a dewatering element such as a vacuum couch roller to form a wet paper web; transferring the wet paper web to a pressing part through a vacuum suction transfer roll after passing through a vacuum couch roll, and then entering a drying part after passing through three-roll two-press-area compound pressing and one blind hole roll pressing, wherein the dryness of the paper web can reach 46-48 percent; after drying in the drying section, the dryness of the paper web can reach 92-94%, and after drying, the paper web is calendered by a double-nip soft calender and then is rolled to obtain the base paper.
The drying part is responsible for the final dehydration of the wet paper web, the drying part comprises 8 groups of drying cylinders and adopts a double-row distribution mode, the lower row of 1-3 groups of drying cylinders adopts a vacuum cylinder, and the 8 th group of drying cylinders adopts 2 cooling cylinders.
Rewinding and packaging comprises: and setting the rewinding speed at 1200m/min, the maximum rewinding width at 2700mm and the maximum rewinding diameter at 1300mm, and packaging after rewinding.
The paper tube prepared by the preparation process is subjected to main index detection by using the surface layer antistatic paper, and the result is shown in table 1:
| index (I) | Unit of | Standard value | Detection value |
| Quantification of | g/m 2 | 60 | 60 |
| Surface resistivity | Ω·cm | ＜1*10 6 | 5.7*10 4 |
| Transverse quantitative difference | ％ | ≤±1.0 | 0.8 |
| Longitudinal quantitative difference | ％ | ≤±1.2 | 1.0 |
| Surface absorbency | ％ | 20-30 | 26 |
| Burst strength | kPa | ≥300 | 350 |
| Moisture content | ％ | 6-8 | 6.5 |
| Longitudinal dry tensile strength | N/15mm | ≥40 | 48 |
| Longitudinal wet tensile strength | N/15mm | ≥15 | 19 |
| Front surface smoothness | s | 70-90 | 83 |
| Smoothness of the back side | s | 10-30 | 13 |
| Degree of air permeability | μm/Pa·s | ≥10 | 17 |
TABLE 1
The column of "standard value" in table 1 is the quality inspection standard of the surface antistatic paper for paper tubes.
The column of "detection value" in table 1 is an average detection value of the surface antistatic paper for the paper tube after a plurality of detections.
From table 1, it can be seen that:
the surface antistatic paper for the paper tube has a fixed weight of 60g/m 2 The allowable error range of the horizontal quantification is +/-1.0%, and the allowable error range of the longitudinal quantification is +/-1.2%.
The achievable properties of the surface antistatic paper for paper tubes are as follows:
the front smoothness is 70-90s;
the smoothness of the back surface is 10-30s;
surface resistivity < 10 6 Ω·cm
The burst strength is more than or equal to 300kPa;
the longitudinal dry tensile strength is more than or equal to 40N/15mm;
the longitudinal wet tensile strength is more than or equal to 15N/15mm;
the air permeability is more than or equal to 10 mu m/Pa.s;
the surface absorbency is 20-30%;
the paper dryness is 92-94%.
The main technical indexes of the prepared product show that the surface antistatic paper for the paper tube has better transverse quantitative and longitudinal quantitative control, good paper evenness, and higher longitudinal dry tensile strength, longitudinal wet tensile strength and air permeability than standard values.
The surface anti-static paper for the paper tube has low surface resistivity and good anti-static effect, can effectively solve the problem that the surface of the paper tube adsorbs dust, and can effectively avoid the generation of static electricity during the winding and unwinding processes.
The surface antistatic paper for the paper tube has good dry and wet tensile strength, can still ensure high winding tension after glue invasion, avoids paper breakage and can be well attached to the paper tube.
The surface antistatic paper for the paper tube has smooth surface, good cleanliness, strong glue absorbing capacity and tight adhesion with the paper tube.
The surface antistatic paper for the paper tube is prepared from bleached softwood pulp, bleached hardwood pulp and carbon fiber, wherein the softwood pulp is pulped in series by a double-disc mill and a conical pulping machine, and the hardwood pulp is pulped by the double-disc mill, so that the paper quality index is ensured.
After the carbon fibers are put into water, low molecular weight polyacrylamide is added to disperse the carbon fibers, so that the carbon fibers are fully mixed with the sizing agent in the sizing pool.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may apply the above-mentioned technical details to other fields by using the equivalent embodiments with equivalent changes or modifications, but any simple modification and equivalent changes made to the above embodiments according to the technical spirit of the present invention may still fall within the protection scope of the technical solution of the present invention.
Claims (7)
1. The preparation process of the surface layer antistatic paper for the paper tube is characterized by comprising the following steps:
step one, pulping; firstly, respectively pulping bleached softwood pulp and bleached hardwood pulp by pulping, removing impurities and pulping, and then according to the proportion of the bleached softwood pulp and the bleached hardwood pulp, the method comprises the following steps of: 7, adding dispersed carbon fibers in the pulp preparation process, wherein the adding amount of the carbon fibers is 3-5% of the adding amount of each ton of paper, so as to obtain mixed pulp, and finally diluting the mixed pulp to a concentration of 2.8%;
adding auxiliary materials; adding a dry strength agent and a wet strength agent into the diluted mixed slurry;
step three, flow transmission; the mixed slurry added with the dry strength agent and the wet strength agent in the step two sequentially passes through a desander, a pressure screen and a pulse attenuator and finally reaches a head box;
step four, papermaking; the method comprises the following steps of (1) adopting a single fourdrinier wire form, uniformly distributing slurry in a head box on a forming wire, then forming a wet paper web through dehydration, sequentially passing the wet paper web through a press part and a drying part, and finally carrying out calendaring and reeling to obtain base paper;
and fifthly, rewinding and packaging.
2. The process for preparing the surface antistatic paper for the paper tube as claimed in claim 1, wherein the pulping comprises: respectively putting bleached softwood pulp and bleached hardwood pulp into a hydraulic pulper for pulping, wherein the pulping concentration is 4.0-5.0%, pulping and then respectively entering different beating front pools, removing impurities from the softwood pulp and the hardwood pulp through high-concentration slag removers, wherein the softwood pulp is longer in fiber, stiff and elastic in fiber, the wet weight of the fiber cannot be too high in the pulping process, and pulping by adopting a double-disc mill and a conical refiner in series, wherein the pulping degree is controlled to be 32 +/-1 DEG SR;
the hardwood pulp is thin and short, double disc grinding pulping is adopted, the fibrillation and devillicate brooming of the fiber are noticed in the pulping process, and the pulping degree is controlled to be 36 +/-1 DEG SR; beating softwood pulp and hardwood pulp, and then respectively entering corresponding beating pools;
according to softwood pulp and hardwood pulp 3:7, mixing pulp in a pulp mixing pool, selecting short carbon fibers with the length of 3-5mm, putting the short carbon fibers with the addition of 3% -5% of the addition of each ton of paper into water, adding low molecular weight polyacrylamide serving as a dispersing agent and an adhesive into the water, dispersing uniformly, adding the mixture into the pulp mixing pool, fully mixing the mixture with the pulp in the pulp mixing pool, diluting the mixed pulp to the concentration of 2.8%, and then feeding the diluted pulp into a pre-papermaking pool.
3. The process for preparing the surface layer antistatic paper for the paper tube as claimed in claim 1, wherein the auxiliary material addition comprises:
adding a dry strength agent into a fore-papermaking pool, wherein the addition amount of the dry strength agent is 1.5-2.0% of the addition amount of each ton of paper;
adding a wet strength agent into the fore-stock, wherein the addition amount of the wet strength agent is 2.0-2.5% of the addition amount of each ton of paper.
4. The process for preparing a surface antistatic paper for a paper tube according to claim 1, wherein the flowing comprises: the pulp in the pool before papermaking is treated by a first-stage three-section desander and then enters a pressure screen, and then enters a head box through a pulse attenuator, the head box adopts a dilution water head box, and white water in a white water tank outside the machine needs to be treated by a white water pressure screen and then enters the head box to dilute the pulp in the head box.
5. The process for preparing the surface antistatic paper for the paper tube as claimed in claim 1, wherein the papermaking comprises the following steps: papermaking adopts a single long net form, slurry is uniformly distributed on a forming net through a pulp flowing box, passes through a table roll, a table board, a wet suction box and a vacuum suction box, then passes through a finishing roll, and finally is dehydrated through a dehydrating element such as a vacuum couch roll to form a wet paper web;
transferring the wet paper web to a pressing part through a vacuum suction shifting roller after the wet paper web is subjected to vacuum couch roll, and then, performing composite pressing through a three-roller two-press area and blind hole roller pressing, and then, allowing the wet paper web to enter a drying part, wherein the dryness of the paper web can reach 46-48%;
after drying in the drying section, the dryness of the paper web can reach 92-94%, and after drying, the paper web is calendered by a double-nip soft calender and then rolled to obtain the base paper.
6. The process for preparing the surface antistatic paper for the paper tube according to claim 1, wherein the rewinding and packaging comprises: and setting the rewinding speed at 1200m/min, the maximum rewinding width at 2700mm and the maximum rewinding diameter at 1300mm, and packaging after rewinding.
7. The surface antistatic paper for paper tubes, which is prepared by the process for preparing the surface antistatic paper for paper tubes according to any one of claims 1 to 6, is characterized in that the basis weight of the surface antistatic paper for paper tubes is 60g/m 2 (ii) a The surface resistivity of the surface antistatic paper for the paper tube is less than 10 6 Ω·cm。
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| CN105624915A (en) * | 2016-01-04 | 2016-06-01 | 仙鹤股份有限公司 | Papermaking technology of anti-static dust-free paper containing carbon fibers |
| CN109972454A (en) * | 2019-03-28 | 2019-07-05 | 汇胜集团平原纸业有限公司 | A kind of FB(is explosion-proof) paper tube base paper and its preparation process |
| JP2021055229A (en) * | 2019-10-01 | 2021-04-08 | 王子ホールディングス株式会社 | Paper tube paper base material and paper tube |
| CN113089358A (en) * | 2021-05-18 | 2021-07-09 | 汇胜集团股份有限公司 | Surface layer polishing base paper and preparation process thereof |
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2022
- 2022-11-07 CN CN202211385569.5A patent/CN115652685B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103711022A (en) * | 2014-01-08 | 2014-04-09 | 山东天地缘实业有限公司 | Carbon fiber high-strength corrugated raw board and preparing method thereof |
| JP2016016951A (en) * | 2014-07-09 | 2016-02-01 | 大王製紙株式会社 | Paper tube and sanitary paper roll |
| CN105624915A (en) * | 2016-01-04 | 2016-06-01 | 仙鹤股份有限公司 | Papermaking technology of anti-static dust-free paper containing carbon fibers |
| CN109972454A (en) * | 2019-03-28 | 2019-07-05 | 汇胜集团平原纸业有限公司 | A kind of FB(is explosion-proof) paper tube base paper and its preparation process |
| JP2021055229A (en) * | 2019-10-01 | 2021-04-08 | 王子ホールディングス株式会社 | Paper tube paper base material and paper tube |
| CN113089358A (en) * | 2021-05-18 | 2021-07-09 | 汇胜集团股份有限公司 | Surface layer polishing base paper and preparation process thereof |
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