CN112252067B - Preparation process of hot-melt dry-wet-pressing mixed tableware and industrial lining product - Google Patents
Preparation process of hot-melt dry-wet-pressing mixed tableware and industrial lining product Download PDFInfo
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- CN112252067B CN112252067B CN202011041715.3A CN202011041715A CN112252067B CN 112252067 B CN112252067 B CN 112252067B CN 202011041715 A CN202011041715 A CN 202011041715A CN 112252067 B CN112252067 B CN 112252067B
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
- D21B1/30—Defibrating by other means
- D21B1/34—Kneading or mixing; Pulpers
- D21B1/345—Pulpers
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
- D21J3/00—Manufacture of articles by pressing wet fibre pulp, or papier-mâché, between moulds
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/64—Paper recycling
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Abstract
The invention relates to the technical field of paper pulp products, in particular to a preparation process of hot-melt dry-wet-pressure mixed tableware and industrial lining products, which comprises the following steps: s1, fixing one end of the pulp board with the water content of 10% on a rolling shaft, fixing the other end of the pulp board on a transmission belt, and propelling the pulp board forward by using the transmission belt; s2, separating and defibering the pulp board fibers through a defibering machine, grinding the pulp board fibers by using air pressure, and then defibering, wherein the dry pulp board fibers are converted into wet pulp fibers; s3, mixing the wet pulp fibers with water, and then transporting the wet pulp fibers through a transmission belt with attached vacuum adsorption; s4, enabling wet pulp fibers adsorbed on the conveying belt to respectively pass through the high-speed crusher, the air suspension power pulper and the napping machine, completely eliminating hydraulic pulping, enabling air pulping operation to be simple and continuous, avoiding any waste water, avoiding devices such as a pulp distribution pool, a pulp storage pool, a pulp supply pool and a pulp pump and greatly reducing investment.
Description
Technical Field
The invention relates to the technical field of paper pulp products, in particular to a preparation process of hot-melt dry-wet-pressure mixed tableware and industrial lining products.
Background
With the increasing white pollution caused by the foam plastic box, the method brings great threat to human living environment, and therefore, the replacement of foam plastic products by pulp products has become a necessary trend.
The traditional preparation process of tableware and industrial lining products is to completely smash pulp plates, and then the pulp is mixed with water and injected into a mould through a pipeline, and the processes of molding, shaping and trimming are sequentially completed.
Therefore, we propose a preparation process of hot-melt dry-wet-pressing mixed tableware and industrial lining products to solve the above problems.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a preparation process of hot-melt dry-wet-pressing mixed tableware and industrial lining products.
A preparation process of hot-melt dry-wet-pressing mixed tableware and industrial lining products comprises the following steps:
s1, fixing one end of the pulp board with the water content of 10% on a rolling shaft, fixing the other end of the pulp board on a transmission belt, and propelling the pulp board forward by using the transmission belt;
s2, separating and defibering the pulp board fibers through a defibering machine, grinding the pulp board fibers by using air pressure, and then defibering, wherein the dry pulp board fibers are converted into wet pulp fibers;
s3, mixing the wet pulp fibers with water, and then transporting the wet pulp fibers through a transmission belt with attached vacuum adsorption;
s4, enabling the wet pulp fibers adsorbed on the conveying belt to pass through a high-speed crusher, an air suspension power pulper and a fluff raising machine respectively, puffing and dissociating the wet pulp fibers to obtain cotton-shaped fluff fibers with the length of about 5mm, adsorbing the puffed fibers on the conveying belt again to form a fluff fiber net, and controlling the thickness of the fluff fiber net to be 2.8-3.2 cm;
s5, uniformly spraying food-grade hot melt agent on the advancing fluff fiber web through a high-pressure spray head by passing the fluff fiber web through a first air-pressure spraying device, wherein the spraying thickness is not more than 0.2 mm; the fluff fiber net passes through a second spraying device, and the waterproof and oil-proof agent is uniformly sprayed on the surface of the fluff fiber net through a spray head;
s6, continuously advancing the conveyor belt with the fluff fiber net through a high-temperature rotating shaft at 120 ℃, adding the crepe paper to the high-temperature rotating shaft, and extruding the fluff fiber net and the crepe paper through the rapid high temperature under the pressure of 55-65t, wherein the crepe paper and the fluff fiber net are combined together;
s7, mixing the crepe paper and the fluffy fiber net, continuing to move to a forming and shaping integrated die cavity, overlapping, pressing and punching an upper die with a cutter and a bottom die by 120t of oil pressure, controlling the die temperature at 100-105 ℃ for 5S, and quickly drying and pressing the water to within 10% within 5S to achieve the dryness required by a finished product;
after die pressing and punching, the upper die is automatically lifted and returned, and simultaneously, the air pressure blowing device is started to blow the punched product into a turnover basket on the other layer of the equipment, and all the processes are finished through manual selection, disinfection and packaging.
Preferably, in S1, can install a plurality of rollers as required, fix the polylith pulp board, cooperate the transmission band to realize the transportation of mixing of polychrome many kinds of thick liquids.
Preferably, in S3, the moisture content of the wet pulp fibers is maintained at 72-77% after the wet pulp fibers are adsorbed by the vacuum adsorption-attached conveying belt, moisture in the wet pulp fibers is sucked during the operation of the conveying belt, and the sucked water is returned to the water supply tank through the return pipe.
Preferably, in the S4, the forming density is 0.28-0.32g/cm 3 A low density fluff web of (a).
Preferably, in S5, after the spraying of the water and oil repellent agent is completed, the coating needs to be cured for 2min, and after the curing, the water and oil repellent agent is attached to the surface of the fluff pulp fiber.
Preferably, in the step S6, after the high-temperature rotating shaft treatment, the water content of the crepe paper with the original water content of less than 10 percent is increased to 28 to 32 percent, a high-density dry-wet-pressed fluff fiber web is formed, and the density reaches 0.65 to 0.75g/cm 3 。
The invention has the beneficial effects that:
1. the process completely does not use hydraulic pulping, has simple and coherent air pulping operation, does not generate any waste water, does not need equipment such as a pulp distribution pool, a pulp storage pool, a pulp supply pool, a pulp pump and the like, and greatly reduces the investment.
2. The process does not need grouting, the problem of uneven thickness of the product is solved, and the product is uniform and regular.
3. The traditional process needs vacuum suction for forming, the adsorption time is about 20s, and the new process does not need the link, so that the investment of vacuum pump equipment is saved, the time is greatly saved, and the productivity is improved;
4. the traditional process needs to transfer the molded product to shaping for 40-60s hot pressing, the temperature of a hot pressing die needs about 200 ℃, the pressure is about 60t, the new process does not need to transfer, but is completed by one-time 5s stamping, the temperature only needs 100 ℃, and a large amount of heat energy consumption is reduced.
5. The traditional process needs a separate edge trimmer for trimming, has no trimming procedure, is completed together with shaping, and greatly reduces the labor cost.
6. The whole process of the production process can be completed by only 1 person, the traditional process needs about 10 persons, and the labor cost is reduced by 10 times.
7. The whole process completion time of the process only needs 8s, which is 25 times of the production efficiency of the traditional process.
8. The production cost of the process is 1/4 of the traditional process, and the process has great price competitive advantage.
Detailed Description
The present invention will be further illustrated with reference to the following specific examples.
In example 1, a process for preparing a hot melt dry wet pressed mixed tableware and industrial lining product comprises the following steps:
s1, fixing one end of the pulp board with the water content of 10% on a rolling shaft, fixing the other end of the pulp board on a transmission belt, and propelling the pulp board to move forwards by using the transmission belt;
s2, separating and defibering the pulp board fibers through a defibering machine, grinding the pulp board fibers by using air pressure, and then defibering, wherein the dry pulp board fibers are converted into wet pulp fibers;
s3, mixing the wet pulp fibers with water, and then transporting the wet pulp fibers through a transmission belt with attached vacuum adsorption;
s4, enabling the wet pulp fibers adsorbed on the conveying belt to pass through a high-speed crusher, an air suspension power pulper and a fluff raising machine respectively, puffing and dissociating the wet pulp fibers to obtain cotton-shaped fluff fibers with the length of about 5mm, adsorbing the puffed fibers on the conveying belt again to form a fluff fiber net, and controlling the thickness of the fluff fiber net to be 2.8 cm;
s5, uniformly spraying a food-grade hot melt agent on the advancing fluff fiber web through a high-pressure spray head by passing the fluff fiber web through a first air-pressure spraying device, wherein the spraying thickness is not more than 0.2 mm; the fluff fiber net passes through a second spraying device, and the waterproof and oil-proof agent is uniformly sprayed on the surface of the fluff fiber net through a spray head;
s6, continuously advancing the conveyor belt with the fluff fiber net through a high-temperature rotating shaft at 120 ℃, adding the crepe paper to the high-temperature rotating shaft, and extruding the fluff fiber net and the crepe paper through the rapid high temperature under 55t of pressure, wherein the crepe paper and the fluff fiber net are combined together;
s7, mixing crepe paper and a fluff fiber web, then continuing to move into a forming integrated die cavity, overlapping, pressing and punching an upper die with a cutter and a bottom die by 120t of oil pressure, controlling the die temperature at 100 ℃ for 5S, rapidly drying and pressing water within 5S to within 10% to achieve the dryness required by a finished product, simultaneously rapidly heating a hot melt agent in the high-density fluff pulp web to generate a viscose, and completely forming no gap between dry pressure and wet pressure after extrusion bonding to ensure perfect combination;
after die pressing and punching, the upper die is automatically lifted and returned, and simultaneously, the air pressure blowing device is started to blow the punched product into a turnover basket on the other layer of the equipment, and all the processes are finished through manual selection, disinfection and packaging.
Further, in S1, can install a plurality of rollers as required, fix the polylith thick liquid board, the cooperation transmission band realizes the mixed transportation of many kinds of thick liquids of polychrome.
Further, in S3, the moisture content of the wet pulp fibers is maintained at 72% after the wet pulp fibers are adsorbed by the conveyor belt with the vacuum adsorption, moisture in the wet pulp fibers is sucked in the operation process of the conveyor belt, and the sucked water flows back to the water supply tank through the return pipe.
Further, in S4, the formed density was 0.28g/cm 3 A low density fluff web of (a).
Further, in S5, after the spraying of the water and oil resistant agent is completed, the curing is performed for 2min, and after the curing, the water and oil resistant agent is attached to the surface of the fluff pulp fiber.
Further, in S6, after the high-temperature rotating shaft treatment, the water content of the crepe paper with the original water content of less than 10 percent is increased to 28 percent, a high-density dry-wet-pressed fluff fiber net is formed, and the density reaches 0.65g/cm 3 。
In example 2, a process for preparing a hot melt dry wet pressed mixed tableware and industrial lining product comprises the following steps:
s1, fixing one end of the pulp board with the water content of 10% on a rolling shaft, fixing the other end of the pulp board on a transmission belt, and propelling the pulp board to move forwards by using the transmission belt;
s2, separating and defibering the pulp board fibers through a defibering machine, grinding the pulp board fibers by using air pressure, and then defibering, wherein the dry pulp board fibers are converted into wet pulp fibers;
s3, mixing the wet pulp fibers with water, and then transporting the wet pulp fibers through a transmission belt with attached vacuum adsorption;
s4, enabling the wet pulp fibers adsorbed on the conveying belt to pass through a high-speed crusher, an air suspension power pulper and a fluff raising machine respectively, puffing and dissociating the wet pulp fibers to obtain cotton-shaped fluff fibers with the length of about 5mm, adsorbing the puffed fibers on the conveying belt again to form a fluff fiber net, and controlling the thickness of the fluff fiber net to be 3.2 cm;
s5, uniformly spraying food-grade hot melt agent on the advancing fluff fiber web through a high-pressure spray head by passing the fluff fiber web through a first air-pressure spraying device, wherein the spraying thickness is not more than 0.2 mm; the fluff fiber net passes through a second spraying device, and the waterproof and oil-proof agent is uniformly sprayed on the surface of the fluff fiber net through a spray head;
s6, continuously advancing the conveyor belt with the fluff fiber net through a high-temperature rotating shaft at 120 ℃, adding the crepe paper to the high-temperature rotating shaft, and extruding the fluff fiber net and the crepe paper through rapid high temperature extrusion under 65t of pressure, wherein the crepe paper and the fluff fiber net are combined together;
s7, mixing the crepe paper and the fluffy fiber net, continuing to move to a forming and shaping integrated die cavity, overlapping, pressing and punching an upper die with a cutter and a bottom die by 120t of oil pressure for 5S, controlling the die temperature at 105 ℃, and quickly drying and pressing water within 5S to within 10% to achieve the dryness required by a finished product;
after die pressing and punching, the upper die is automatically lifted and returned, and simultaneously, the air pressure blowing device is started to blow the punched product into a turnover basket on the other layer of the equipment, and all the processes are finished through manual selection, disinfection and packaging.
Further, in S1, can install a plurality of rollers as required, fix the polylith thick liquid board, the cooperation transmission band realizes the mixed transportation of many kinds of thick liquids of polychrome.
Further, in S3, the moisture content of the wet pulp fibers is maintained at 77% after the wet pulp fibers are adsorbed by the vacuum adsorption-attached conveying belt, moisture in the wet pulp fibers is sucked during the operation of the conveying belt, and the sucked water is returned to the water supply tank through the return pipe.
Further, in S4, the formed density was 0.32g/cm 3 A low density fluff web of (a).
Further, in S5, after the spraying of the water and oil resistant agent is completed, the curing is performed for 2min, and after the curing, the water and oil resistant agent is attached to the surface of the fluff pulp fiber.
Further, in S6, after the high-temperature rotating shaft treatment, the water content of the crepe paper with the original water content of less than 10 percent is increased to 32 percent, a high-density dry-wet-pressed fluff fiber net is formed, and the density reaches 0.75g/cm 3 。
In example 3, a process for preparing a hot melt dry wet pressed mixed tableware and industrial liner product, comprising the steps of:
s1, fixing one end of the pulp board with the water content of 10% on a rolling shaft, fixing the other end of the pulp board on a transmission belt, and propelling the pulp board forward by using the transmission belt;
s2, separating and defibering the pulp board fibers through a defibering machine, grinding the pulp board fibers by using air pressure, and then defibering, wherein the dry pulp board fibers are converted into wet pulp fibers;
s3, mixing the wet pulp fiber with water, and then transporting the wet pulp fiber through a transmission belt with attached vacuum adsorption;
s4, subjecting the wet pulp fibers adsorbed on the conveying belt to puffing and dissociation through a high-speed crusher, an air suspension power pulper and a fluff raising machine respectively to obtain cotton-shaped fluff fibers with the length of about 5mm, adsorbing the puffed fibers on the conveying belt again to form a fluff fiber web, and controlling the thickness of the fluff fiber web to be 3 cm;
s5, uniformly spraying food-grade hot melt agent on the advancing fluff fiber web through a high-pressure spray head by passing the fluff fiber web through a first air-pressure spraying device, wherein the spraying thickness is not more than 0.2 mm; the fluff fiber net passes through a second spraying device, and the waterproof and oil-proof agent is uniformly sprayed on the surface of the fluff fiber net through a spray head;
s6, continuously advancing the conveying belt with the fluff fiber net through a high-temperature rotating shaft at 120 ℃, adding the crepe paper to the high-temperature rotating shaft, and extruding the fluff fiber net and the crepe paper through rapid high temperature extrusion under 60t of pressure, wherein the crepe paper and the fluff fiber net are combined together;
s7, mixing the crepe paper and the fluffy fiber net, continuing to move to a forming and shaping integrated die cavity, overlapping, pressing and punching an upper die with a cutter and a bottom die by 120t of oil pressure for 5S, controlling the die temperature at 102 ℃, and quickly drying and pressing water within 5S to within 10% to achieve the dryness required by a finished product;
after die pressing and punching, the upper die is automatically lifted and returned, and simultaneously, the air pressure blowing device is started to blow the punched product into a turnover basket on the other layer of the equipment, and all the processes are finished through manual selection, disinfection and packaging.
Further, in S1, can install a plurality of rollers as required, fix the polylith thick liquid board, the cooperation transmission band realizes the mixed transportation of many kinds of thick liquids of polychrome.
Further, in S3, the moisture content of the wet pulp fibers is maintained at 75% after the wet pulp fibers are adsorbed by the conveyor belt with the vacuum adsorption, moisture in the wet pulp fibers is sucked in the operation process of the conveyor belt, and the sucked water flows back to the water supply tank through the return pipe.
Further, in S4, the formed density was 0.3g/cm 3 A low density fluff web of (a).
Further, in S5, after the spraying of the water and oil resistant agent is completed, the curing is performed for 2min, and after the curing, the water and oil resistant agent is attached to the surface of the fluff pulp fiber.
Further, in S6, after the high-temperature rotating shaft treatment, the water content of the crepe paper with the original water content of less than 10 percent is increased to 30 percent, a high-density dry-wet-pressed fluff fiber net is formed, and the density reaches 0.7g/cm 3 。
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered as the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (6)
1. A preparation process of hot-melt dry-wet-pressing mixed tableware and industrial lining products is characterized by comprising the following steps:
s1, fixing one end of the pulp board with the water content of 10% on a rolling shaft, fixing the other end of the pulp board on a transmission belt, and propelling the pulp board forward by using the transmission belt;
s2, separating and defibering the pulp board fibers through a defibering machine, grinding the pulp board fibers by using air pressure, and then defibering, wherein the dry pulp board fibers are converted into wet pulp fibers;
s3, mixing the wet pulp fibers with water, and then transporting the wet pulp fibers through a transmission belt with attached vacuum adsorption;
s4, enabling the wet pulp fibers adsorbed on the conveying belt to pass through a high-speed crusher, an air suspension power pulper and a fluff raising machine respectively, puffing and dissociating the wet pulp fibers to obtain cotton-shaped fluff fibers with the length of about 5mm, adsorbing the puffed fibers on the conveying belt again to form a fluff fiber net, and controlling the thickness of the fluff fiber net to be 2.8-3.2 cm;
s5, uniformly spraying food-grade hot melt agent on the advancing fluff fiber web through a high-pressure spray head by passing the fluff fiber web through a first air-pressure spraying device, wherein the spraying thickness is not more than 0.2 mm; the fluff fiber net passes through a second spraying device, and the waterproof and oil-proof agent is uniformly sprayed on the surface of the fluff fiber net through a spray head;
s6, continuously advancing the conveyor belt with the fluff fiber net through a high-temperature rotating shaft at 120 ℃, adding the crepe paper to the high-temperature rotating shaft, and extruding the fluff fiber net and the crepe paper through the rapid high temperature under the pressure of 55-65t, wherein the crepe paper and the fluff fiber net are combined together;
s7, mixing the crepe paper and the fluffy fiber net, continuing to move to a forming and shaping integrated die cavity, overlapping, pressing and punching an upper die with a cutter and a bottom die by 120t of oil pressure, controlling the die temperature at 100-105 ℃ for 5S, and quickly drying and pressing the water to within 10% within 5S to achieve the dryness required by a finished product;
after die pressing and punching, the upper die is automatically lifted and returned, and simultaneously, the air pressure blowing device is started to blow the punched product into a turnover basket on the other layer of the equipment, and all the processes are finished through manual selection, disinfection and packaging.
2. The process according to claim 1, wherein in step S1, a plurality of rollers are installed as required to fix a plurality of pulp sheets, and a conveyor belt is used to transport mixed multi-color and multi-pulp.
3. The process of claim 1, wherein in step S3, the moisture content of wet pulp fibers is maintained at 72-77% after being absorbed by the conveyor belt with vacuum absorption, the moisture in the wet pulp fibers is extracted during the operation of the conveyor belt, and the extracted water is returned to the water supply tank through the return pipe.
4. The process of claim 1, wherein in the step of S4, a low density fluff web with a density of 0.28-0.32g/cm3 is formed.
5. The process according to claim 1, wherein the step of S5, after spraying the water and oil repellent agent, is carried out for 2min, and after curing, the water and oil repellent agent is attached to the surface of the fleece web.
6. The process for preparing hot-melt dry-wet-pressed mixed tableware and industrial lining products according to claim 1, wherein in S6, after high-temperature rotating shaft treatment, the moisture content of crepe paper with the original moisture content of less than 10% is increased to 28% -32%, and high-density dry-wet-pressed fluff fiber is formedThe density of the net reaches 0.65-0.75g/cm 3 。
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| CN101827616A (en) * | 2007-10-15 | 2010-09-08 | 金伯利-克拉克环球有限公司 | Absorbent composite with improved fluid wicking and web integrity |
| CN106192542A (en) * | 2016-07-14 | 2016-12-07 | 自贡竹语科技有限公司 | A kind of clean method for preparing of high-quality highly purified true qualities bamboo Time of Fluff Slurry |
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| AT241825B (en) * | 1961-03-24 | 1965-08-10 | Mixolit Kunststofferzeugung Ge | Process for the production of shaped bodies, in particular sheets made of cellulose-containing fiber material |
| CN101338533A (en) * | 2008-07-31 | 2009-01-07 | 杨清国 | Method for producing toilet paper |
| CN107916596A (en) * | 2017-11-07 | 2018-04-17 | 陕西聚洁瀚化工有限公司 | A kind of preparation method of paper mould joint product |
| CN109371758A (en) * | 2018-11-29 | 2019-02-22 | 浙江丰舟特种纸有限公司 | A kind of preparation method for the face tissue that flexibility is good |
| CN110846940B (en) * | 2019-10-21 | 2022-08-12 | 兰考裕富精密科技有限公司 | Method and system for producing pulp molded product |
| CN110820167A (en) * | 2019-11-29 | 2020-02-21 | 山东冠骏清洁材料科技有限公司 | Production process of functional PP wood pulp spunlace composite cloth |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101827616A (en) * | 2007-10-15 | 2010-09-08 | 金伯利-克拉克环球有限公司 | Absorbent composite with improved fluid wicking and web integrity |
| CN106192542A (en) * | 2016-07-14 | 2016-12-07 | 自贡竹语科技有限公司 | A kind of clean method for preparing of high-quality highly purified true qualities bamboo Time of Fluff Slurry |
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Effective date of registration: 20220704 Address after: 250204 West workshop of Daguan Village North Village Committee courtyard, Longshan street, Zhangqiu District, Jinan City, Shandong Province Applicant after: Shandong zhiwo mechanical equipment Co.,Ltd. Address before: 256800 north of Qingfeng 2nd Road and west of Binhai Avenue, Chengbei Industrial Park, Zhanhua District, Binzhou City, Shandong Province Applicant before: Shandong Lanwo environmental protection tableware Co.,Ltd. |
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