CN112626923B - Manufacturing process of box paperboard - Google Patents
Manufacturing process of box paperboard Download PDFInfo
- Publication number
- CN112626923B CN112626923B CN202011446011.4A CN202011446011A CN112626923B CN 112626923 B CN112626923 B CN 112626923B CN 202011446011 A CN202011446011 A CN 202011446011A CN 112626923 B CN112626923 B CN 112626923B
- Authority
- CN
- China
- Prior art keywords
- pulp
- grinding
- slurry
- paper
- disc
- 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
Images
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/10—Packing paper
-
- 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
- D21B1/32—Defibrating by other means of waste paper
-
- 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
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D1/00—Methods of beating or refining; Beaters of the Hollander type
- D21D1/20—Methods of refining
- D21D1/30—Disc mills
- D21D1/303—Double disc mills
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
- D21D5/02—Straining or screening the pulp
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/08—Mechanical or thermomechanical pulp
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/14—Secondary fibres
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H15/00—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution
- D21H15/02—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution characterised by configuration
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H15/00—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution
- D21H15/02—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution characterised by configuration
- D21H15/06—Long fibres, i.e. fibres exceeding the upper length limit of conventional paper-making fibres; Filaments
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Paper (AREA)
Abstract
The invention discloses a manufacturing process of cardboard paper, which comprises the following steps: the method comprises the following steps of S1, preparing wood pulp slurry by disintegrating, pulping and beating a wood pulp board, S2, mixing and disintegrating and pulping waste paper, removing impurities, screening, deslagging, and classifying to separate short fiber slurry and long and medium fiber mixed slurry, S3, mixing the short fiber slurry with the wood pulp fiber slurry after concentration and dispersion, beating to prepare surface layer paper pulp, S4, classifying the long and medium fiber mixed slurry to obtain long fiber slurry and medium fiber slurry, mixing the long fiber slurry with the wood pulp fiber slurry, purifying and screening, concentrating, squeezing, dispersing, and beating to prepare core layer paper pulp, concentrating, squeezing and dispersing the medium fiber slurry to prepare bottom layer paper pulp, and S5, preparing cardboard paper; the cardboard paper manufactured by the invention has less wood pulp consumption and high strength, can reduce the consumption of imported waste paper, meets the requirement of environmental protection, and solves the problems in the prior art.
Description
Technical Field
The invention belongs to the technical field of box paperboard manufacturing, and particularly relates to a manufacturing process of a box paperboard.
Background
The cardboard is also called kraft paper and craft paper, and is one of the main paper types of paper for cartons. The box paper board is mainly used for being made into a paper box after being bonded with a corrugated paper core, and is used for packaging household appliances, daily general goods, knitted cotton fabrics, cultural goods, external packages of Chinese and western patent medicines and the like. At present, pulping and papermaking enterprises continuously innovate and upgrade the technology in order to produce high-profit paper products, but with the gradual strictness of the environmental protection requirement, the quantity of No. 12 American waste (sundries of double-sorted old corrugated cases cannot exceed 0.5 percent and the total quantity of unqualified waste paper cannot exceed 2 percent) in imported waste paper is gradually reduced, and the domestic waste paper has low fiber quality and cannot be directly used for producing high-strength variety of 'yew' box paper boards. In order to not lose the market of the prior high-strength yew box board product, only the use amount of No. 12 American waste raw materials is replaced by low amount of wood pulp slurry, and the gap of the imported No. 12 American waste raw materials is filled, so as to continuously produce the high-strength yew box board.
However, adding low amounts of wood pulp slurry to the waste paper slurry presents two problems: 1. on the premise of not influencing the quality of the produced boxboard, the wood pulp slurry can be added into the existing waste paper manufacturing slurry by any technological means; 2. on the premise of not influencing the quality of the produced linerboards, how to control the addition of less wood pulp slurry is used for replacing more No. 12 American waste raw materials.
Disclosure of Invention
The invention aims to provide a manufacturing process of a box paperboard, which is technically improved on the basis of the original waste paper pulp process, adds wood pulp disintegrating, pulping and beating processes, then adds wood pulp fiber slurry into a pre-grinding pool of a mixed waste paper production line, adds the wood pulp fiber slurry of the pre-grinding pool into dispersed short fiber slurry and long fiber slurry after the mixed waste paper is subjected to disintegrating, roughing, fiber grading, purification screening, concentration, squeezing and dispersion treatment, and then carries out mixed pulping treatment, and then the obtained mixture is subjected to three-layer headbox adjustment and net section forming by a paper machine to be compounded into the high-strength 'yew' box paperboard.
The purpose of the invention can be realized by the following technical scheme:
a manufacturing process of box paperboard specifically comprises the following steps:
step S1, wood pulp slurry preparation: conveying a wood pulp paperboard into a hydrapulper through a chain plate machine, adding clear water into the pulper, pulping the wood pulp paperboard into wood pulp slurry under the action of a rotating cutter head, adding the wood pulp slurry into pulping equipment and pulping equipment for pulping and pulping to prepare wood pulp fiber material, and pumping the wood pulp fiber material into a pre-grinding pool for later use;
step S2, mixing waste paper for pulping: respectively conveying imported waste paper and domestic waste paper raw materials into a waste paper pulper through a chain plate machine, adding clear water into the waste paper pulper for mixed disintegration, conveying the crushed mixed waste paper pulp into a high-concentration slag separator, removing impurities in the mixed waste paper pulp, transferring the mixed waste paper pulp subjected to impurity removal into a transitional pulp tank for storage, conveying the mixed waste paper pulp subjected to transitional pulp tank into a coarse screening section to screen pulp, conveying the mixed waste paper pulp subjected to coarse screening into a heavy slag separator for further impurity removal to obtain refined mixed waste paper pulp, screening and purifying the refined mixed waste paper pulp again, and then separating the refined mixed waste paper pulp into short fiber pulp and long and medium fiber mixed pulp through a two-section grading screen;
step S3, preparing surface layer paper pulp: sending short fiber pulp to a plurality of discs for concentration, sending the concentrated short fiber pulp to a screw press through a medium-concentration vertical pipe for pressing, sending the pressed short fiber pulp to a heat dispersion machine for dispersion treatment, mixing the short fiber pulp with wood pulp fiber materials, and sending the mixture to a double-disc pulp grinding device for pulping to prepare surface layer pulp;
step S4, preparing core layer paper pulp and bottom layer paper pulp: enabling the long and medium fiber mixed slurry to pass through a secondary grading sieve, and dividing the long and medium fiber mixed slurry into long fiber slurry and medium fiber slurry; feeding the long fiber pulp screened by the classifying screen into a fine screen section for purification and fine screen screening, conveying the long fiber pulp subjected to fine screening to a plurality of discs for concentration, conveying the long fiber pulp subjected to fine screening into a screw press through a medium-concentration vertical pipe after concentration for pressing, conveying the long fiber pulp subjected to pressing into a thermal dispersion machine for dispersion treatment, and conveying the wood pulp fiber material and the long fiber pulp subjected to dispersion treatment into a double-disc pulping device respectively for pulping to obtain core layer paper pulp; conveying the medium fiber pulp screened by the grading sieve to a plurality of discs for concentration, conveying the concentrated medium fiber pulp to a screw press through a medium concentration vertical pipe for pressing, and conveying the pressed medium fiber pulp to a heat dispersion machine for heat dispersion treatment to prepare bottom layer paper pulp;
step S5, preparing a box paperboard: and (4) feeding the surface layer paper pulp prepared in the step (S3) into a surface layer of a paper machine, respectively feeding the core layer paper pulp and the bottom layer paper pulp prepared in the step (S4) into a core layer and a bottom layer of the paper machine, compounding the surface layer pulp, the core layer pulp and the bottom layer pulp by the paper machine to prepare raw paper, sequentially squeezing the obtained raw paper through a squeezing part, drying through a front drying part, applying glue on the surface of the raw paper, drying through a rear drying part, flatly decorating by a calender, curling by a curling machine, rewinding, and then cutting into finished kraft boxes and paper boards with certain specifications to be metered and stored.
Further, in the step S2, the imported waste paper is a waste corrugated cardboard with the mass of sundries in each hundred grams of waste paper not exceeding 0.5%, the total mass of unqualified waste paper not exceeding 2%, and the domestic waste paper is a waste corrugated cardboard with the mass of sundries in each hundred grams of waste paper not exceeding 1%, and the total mass of unqualified waste paper not exceeding 10%; wherein the unqualified waste paper is book and periodical paper, newspaper and coated paper; the sundries are glass, metal, foam, plastic, wood strips and sand grains; the weight ratio of the imported waste paper to domestic waste paper is 1.
Further, the average length of short fibers in the short fiber slurry is less than 0.6mm, the average length of fibers in the medium fiber slurry is between 0.6 and 0.75mm, and the average length of long fibers in the long fiber slurry is more than 0.75mm.
The double-disc pulping device comprises a base, a motor, a speed reducer, a bearing seat assembly, a pulp inlet bin, a disc grinding cavity, an adjusting mechanism, a pulp inlet pipe assembly and a pulp outlet pipe, wherein the motor is fixedly installed on one side above the base, the pulp inlet bin is fixedly installed on the other side above the base, the speed reducer is fixedly installed on one side, close to the motor, between the motor and the pulp inlet bin, a coupler is arranged between the motor and the speed reducer, the output end of the motor is fixedly connected with the input end of the speed reducer through the coupler, the bearing seat assembly is fixedly installed between the speed reducer and the pulp inlet bin, the disc grinding cavity is located on one side, far away from the bearing seat assembly, of the pulp inlet bin, the adjusting mechanism is located on one side, far away from the pulp inlet bin, the pulp inlet pipe assembly is communicated with the pulp inlet bin, and the pulp outlet pipe is located above the disc grinding cavity;
the slurry feeding bin comprises a slurry storage shell, a feed inlet is fixed on one side, close to the disc grinding cavity, of the top end of the slurry storage shell, the feed inlet is communicated with the interior of the slurry storage shell, a slurry bin supporting seat is arranged at the bottom end of the slurry storage shell, the bottom end of the slurry bin supporting seat is fixedly connected with the base, the top end of the slurry bin supporting seat is fixedly connected with the slurry storage shell, a main shaft is arranged in the slurry storage shell, a plurality of material blocking sealing rings are fixedly mounted on the main shaft, and the plurality of material blocking sealing rings are located on one side, close to the bearing seat assembly, in the slurry storage shell;
the bearing frame subassembly includes the bearing frame body, the bearing frame body is fixed in one side of thick liquid storehouse supporting seat, and the inside footstep bearings that are equipped with two opposition settings of bearing frame body, the speed reducer output runs through bearing frame body lateral wall and a footstep bearing fixed connection, the one end of main shaft runs through stores up thick liquid casing lateral wall and bearing frame body lateral wall and another footstep bearing fixed connection, two be equipped with the adapter sleeve between the footstep bearing, the main shaft passes through adapter sleeve fixed connection with the speed reducer output.
Further, the disc grinding chamber comprises a grinding chamber shell, the grinding chamber shell is fixedly connected with the pulp storage shell and the pulp bin supporting seat respectively, the inside of the grinding chamber shell is communicated with the inside of the pulp inlet bin, a discharge port is fixed at the top end of the grinding chamber shell, the discharge port is communicated with the inside of the grinding chamber shell, the top end of the discharge port is fixedly connected with one end of the pulp outlet pipe, a discharge valve is fixedly installed at the bottom end of the grinding chamber shell, the discharge valve is communicated with the inside of the grinding chamber shell, a grinding disc fixing plate is fixedly installed at one side, close to the pulp inlet bin, of the inside of the grinding chamber shell, a through hole is formed in the center of the grinding disc fixing plate, a grinding disc movable plate is arranged at one side, away from the pulp inlet bin, a rotary disc is arranged between the grinding disc fixing plate and the grinding disc movable plate, the center of the rotary disc is fixedly connected with the other end of the main shaft, two opposite grinding discs are arranged on two sides of the rotary disc respectively, and four grinding discs are fixedly connected with the rotary disc fixing plate and the grinding disc movable plate.
Further, the adjusting mechanism comprises a grinding cavity cover, the grinding cavity cover is fixedly connected with a grinding cavity shell, a screw shaft is arranged at the center of the grinding cavity cover, the screw shaft is movably connected with the grinding cavity cover, one end of the screw shaft is fixedly connected with the center of a grinding disc movable plate, a sealing ring is arranged between the grinding disc movable plate and the grinding cavity cover, the sealing ring is fixedly connected with the grinding cavity cover, the sealing ring is sleeved on the screw shaft and is in sliding connection with the screw shaft, a worm wheel is arranged inside the grinding cavity cover, the worm wheel is sleeved on the screw shaft and is in threaded connection with the screw shaft, the worm wheel is movably connected with the grinding cavity cover, a worm is arranged above the worm wheel, the worm is meshed with the worm wheel, the worm is located inside the grinding cavity cover and is movably connected with the grinding cavity cover, an adjusting shaft is fixed at the center of the worm, one end of the adjusting shaft is rotatably connected with the grinding cavity cover, and the other end of the adjusting shaft penetrates through the grinding cavity cover and is fixedly connected with an adjusting wheel disc.
Further, advance thick liquid pipe assembly and include that waste paper pulp advances pipe, wood pulp advances pipe, centrifugal stuff pump and mixed thick liquid pipe, waste paper pulp advances the one end of pipe and the input fixed connection of centrifugal stuff pump, wood pulp advances the one end of pipe and advances the fixed intercommunication in pipe center with waste paper pulp, the one end of mixed thick liquid pipe and the output fixed connection of centrifugal stuff pump, the other end and the feed inlet top fixed connection of mixed thick liquid pipe.
Furthermore, a plurality of slurry through holes are formed in the rotary table, and are distributed in a circular array by taking the center of the rotary table as a circle center.
Furthermore, the center of the pulp grinding disc is provided with a through hole, and the surface of one side of the pulp grinding disc is provided with a plurality of pulp passing grooves which are uniformly distributed.
The invention has the beneficial effects that:
the invention carries on the technological improvement on the basis of the pulping process of the original waste paper, increase the wood pulp and break down, defibrinate and pulp beating process, then add into and mix in the mixed waste paper production line and grind in the pool, mix the waste paper production line and set up and break down, roughing, fiber classification, purify and screen, concentrate, squeeze, disperse after processing, add the wood pulp fiber slurry of grinding in the pool into short fiber slurry and long fiber slurry after dispersing, mix and grind and process, then adjust and net part shaping through the three-layer head box of the paper machine, compound into the "Yew" boxboard of high strength, have the advantage that the consumption of wood pulp of boxboard made is little, the intensity is high, reduce the consumption of the imported waste paper, accord with the green requirement;
according to the invention, a small amount of wood pulp is used to replace imported waste paper, pulp fiber pulp after pulping and beating is added into short fiber pulp and long fiber pulp, and uniform beating is carried out, so that the quality of mixed pulp is improved, the consumption of imported waste paper in waste paper raw materials is reduced, the weight ratio of the imported waste paper in the original process to the domestic waste paper is 4: 4;
according to the invention, the wood pulp fiber material is respectively mixed with the short fiber pulp and the long fiber pulp and then added into the double-disc pulp grinding equipment, the mixed pulp is beaten through the relative motion of the two pairs of pulp grinding discs, and the fibers in the mixed pulp are broomed, so that the pulp quality is improved, and the index requirement of the paper machine for producing yew is better met.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of a double-disc refining apparatus according to the present invention;
FIG. 2 is a schematic structural view of the double-disc refining device of the present invention after the pulp inlet pipe assembly and the pulp outlet pipe are hidden;
FIG. 3 is a schematic structural view of a slurry inlet bin, a disc grinding chamber and an adjusting mechanism of the present invention;
FIG. 4 is a side view of the adjustment mechanism of the present invention;
FIG. 5 is a front view of the turntable of the present invention;
fig. 6 is a front view of the refining disc according to the present invention.
In the drawings, the reference numbers indicate the following list of parts:
1. a base; 2. a motor; 201. a coupling; 3. a speed reducer; 4. a bearing housing assembly; 401. a bearing housing body; 402. a thrust bearing; 403. connecting sleeves; 5. a pulp inlet bin; 501. a slurry storage shell; 502. a material blocking sealing ring; 503. a main shaft; 504. a feed inlet; 505. a pulp bin supporting seat; 6. a disc grinding chamber; 601. a grinding chamber housing; 602. a discharge port; 603. a discharge valve; 604. a millstone fixing plate; 605. a turntable; 606. a grinding disc; 607. a millstone movable plate; 7. an adjustment mechanism; 701. a grinding chamber cover; 702. a screw shaft; 703. a seal ring; 704. a worm gear; 705. a worm; 706. an adjustment shaft; 707. adjusting the wheel disc; 8. a slurry inlet pipe assembly; 801. waste paper pulp inlet pipe; 802. feeding wood pulp into a pipe; 803. centrifuging the slurry pump; 804. mixing the slurry pipe; 9. and (7) a pulp outlet pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A manufacturing process of box paperboard specifically comprises the following steps:
step S1, wood pulp slurry preparation: conveying a wood pulp paperboard into a hydrapulper through a chain plate machine, adding clear water into the pulper, pulping the wood pulp paperboard into wood pulp slurry under the action of a rotating cutter head, adding the wood pulp slurry into pulping equipment and pulping equipment for pulping and pulping to prepare wood pulp fiber material, and pumping the wood pulp fiber material into a pre-grinding pool for later use;
step S2, mixing waste paper for pulping: respectively conveying imported waste paper and domestic waste paper raw materials into a waste paper pulper through a chain plate machine, adding clear water into the waste paper pulper for mixed disintegration, conveying the crushed mixed waste paper pulp into a high-concentration slag separator, removing impurities in the mixed waste paper pulp, transferring the mixed waste paper pulp subjected to impurity removal into a transitional pulp tank for storage, conveying the mixed waste paper pulp subjected to transitional pulp tank into a coarse screening section to screen pulp, conveying the mixed waste paper pulp subjected to coarse screening into a heavy slag separator for further impurity removal to obtain refined mixed waste paper pulp, screening and purifying the refined mixed waste paper pulp again, and then separating the refined mixed waste paper pulp into short fiber pulp and long and medium fiber mixed pulp through a two-section grading screen;
step S3, preparing surface layer paper pulp: sending the short fiber pulp to a plurality of discs for concentration, sending the concentrated short fiber pulp to a screw press through a medium-concentration vertical pipe for pressing, sending the pressed short fiber pulp to a heat dispersion machine for dispersion treatment, mixing the short fiber pulp with wood pulp fiber, and sending the mixture to a double-disc pulp grinding device for beating to prepare surface layer paper pulp;
step S4, preparing core layer paper pulp and bottom layer paper pulp: enabling the long and medium fiber mixed slurry to pass through a secondary grading sieve, and dividing the long and medium fiber mixed slurry into long fiber slurry and medium fiber slurry; sending the long fiber pulp screened by the classifying screen into a fine screen section for purification and fine screen screening, conveying the fine screened long fiber pulp to a plurality of discs for concentration, sending the concentrated long fiber pulp to a screw press through a medium-concentration vertical pipe for pressing, sending the pressed long fiber pulp to a heat dispersion machine for dispersion treatment, and respectively conveying the wood pulp fiber pulp and the dispersed long fiber pulp into a double-disc pulp grinding device for pulping to prepare core layer pulp; conveying the medium fiber pulp screened by the classifying screen to a plurality of discs for concentration, conveying the concentrated medium fiber pulp to a screw press through a medium concentration vertical pipe for pressing, and conveying the pressed medium fiber pulp to a heat dispersion machine for heat dispersion treatment to obtain bottom layer paper pulp;
step S5, preparing a box board: and (4) feeding the surface layer paper pulp prepared in the step (S3) into a surface layer of a paper machine, respectively feeding the core layer paper pulp and the bottom layer paper pulp prepared in the step (S4) into a core layer and a bottom layer of the paper machine, compounding the surface layer pulp, the core layer pulp and the bottom layer pulp by the paper machine to prepare raw paper, sequentially squeezing the obtained raw paper through a squeezing part, drying through a front drying part, applying glue on the surface of the raw paper, drying through a rear drying part, flatly decorating by a calender, curling by a curling machine, rewinding, and then cutting into finished kraft boxes and paper boards with certain specifications to be metered and stored.
In the step S2, the imported waste paper is a waste corrugated cardboard with the mass of sundries in each hundred grams of waste paper not exceeding 0.5 percent and the total mass of unqualified waste paper not exceeding 2 percent, and the domestic waste paper is a waste corrugated cardboard with the mass of sundries in each hundred grams of waste paper not exceeding 1 percent and the total mass of unqualified waste paper not exceeding 10 percent; wherein the unqualified waste paper is book and periodical paper, newspaper and coated paper; the sundries are glass, metal, foam, plastic, wood strips and sand grains; the weight ratio of the imported waste paper to domestic waste paper is 1.
The average length of short fibers in the short fiber slurry is less than 0.6mm, the average length of fibers in the medium fiber slurry is 0.6-0.75mm, and the average length of long fibers in the long fiber slurry is more than 0.75mm.
Referring to fig. 1-6, the double-disc refining device in the above embodiment includes a base 1, a motor 2, a speed reducer 3, a bearing seat assembly 4, a pulp inlet bin 5, a disc refining chamber 6, an adjusting mechanism 7, a pulp inlet tube assembly 8 and a pulp outlet tube 9, the motor 2 is fixedly installed on one side above the base 1, the pulp inlet bin 5 is fixedly installed on the other side above the base 1, the speed reducer 3 is fixedly installed on one side between the motor 2 and the pulp inlet bin 5, which is close to the motor 2, a coupling 201 is arranged between the motor 2 and the speed reducer 3, an output end of the motor 2 is fixedly connected with an input end of the speed reducer 3 through the coupling 201, the bearing seat assembly 4 is fixedly installed between the speed reducer 3 and the pulp inlet bin 5, the disc refining chamber 6 is located on one side of the pulp inlet bin 5, the adjusting mechanism 7 is located on one side of the disc refining chamber 6, which is far from the pulp inlet bin 5, the pulp inlet tube assembly 8 is communicated with the pulp inlet bin 5, and the pulp outlet tube 9 is located above the disc refining chamber 6;
the slurry inlet bin 5 comprises a slurry storage shell 501, a feed inlet 504 is fixed on one side, close to the disc grinding cavity 6, of the top end of the slurry storage shell 501, the feed inlet 504 is communicated with the inside of the slurry storage shell 501, a slurry bin supporting seat 505 is arranged at the bottom end of the slurry storage shell 501, the bottom end of the slurry bin supporting seat 505 is fixedly connected with the base 1, the top end of the slurry bin supporting seat 505 is fixedly connected with the slurry storage shell 501, a main shaft 503 is arranged inside the slurry storage shell 501, a plurality of material blocking sealing rings 502 are fixedly mounted on the main shaft 503, and the plurality of material blocking sealing rings 502 are located on one side, close to the bearing seat assembly 4, inside the slurry storage shell 501;
bearing frame subassembly 4 includes bearing frame body 401, bearing frame body 401 is fixed in one side of thick liquid storehouse supporting seat 505, and bearing frame body 401 is inside to be equipped with two thrust bearings 402 that oppose the setting, 3 output of speed reducer runs through bearing frame body 401 lateral wall and a thrust bearing 402 fixed connection, the one end of main shaft 503 runs through and stores up thick liquid casing 501 lateral wall and bearing frame body 401 lateral wall and another thrust bearing 402 fixed connection, two be equipped with adapter sleeve 403 between the thrust bearing 402, main shaft 503 passes through adapter sleeve 403 fixed connection with 3 outputs of speed reducer.
The disc grinding cavity 6 comprises a grinding cavity shell 601, the grinding cavity shell 601 is fixedly connected with a pulp storage shell 501 and a pulp bin supporting seat 505 respectively, the inside of the grinding cavity shell 601 is communicated with the inside of the pulp inlet bin 5, a discharge port 602 is fixed at the top end of the grinding cavity shell 601, the discharge port 602 is communicated with the inside of the grinding cavity shell 601, the top end of the discharge port 602 is fixedly connected with one end of a pulp outlet pipe 9, a discharge valve 603 is fixedly installed at the bottom end of the grinding cavity shell 601, the discharge valve 603 is communicated with the inside of the grinding cavity shell 601, a grinding disc fixing plate 604 is fixedly installed at one side, close to the pulp inlet bin 5, of the inside of the grinding cavity shell 601, a through hole is formed in the center of the grinding disc fixing plate 604, a grinding disc movable plate 607 is arranged at one side, far away from the pulp inlet bin 5, of the grinding disc fixing plate 604, a rotary disc 605 is arranged between the grinding disc fixing plate 604 and the grinding disc movable plate 607, the center of the rotary disc 605 is fixedly connected with the other end of a main shaft 503, two grinding discs 606 are respectively arranged at two sides of the rotary disc 605, and four grinding discs 606 are fixedly connected with two sides of the rotary disc 605, the grinding disc fixing plate 604 and the grinding disc fixing plate 607 respectively.
The adjusting mechanism 7 comprises a grinding cavity cover 701, the grinding cavity cover 701 is fixedly connected with a grinding cavity shell 601, a spiral shaft 702 is arranged at the center of the grinding cavity cover 701, the spiral shaft 702 is movably connected with the grinding cavity cover 701, one end of the spiral shaft 702 is fixedly connected with the center of a grinding disc movable plate 607, a sealing ring 703 is arranged between the grinding disc movable plate 607 and the grinding cavity cover 701, the sealing ring 703 is fixedly connected with the grinding cavity cover 701, the sealing ring 703 is sleeved on the spiral shaft 702 and is in sliding connection with the spiral shaft 702, a worm wheel 704 is arranged inside the grinding cavity cover 701, the worm wheel 704 is sleeved on the spiral shaft 702 and is in threaded connection with the spiral shaft 702, the worm wheel 704 is movably connected with the grinding cavity cover 701, a worm 705 is arranged above the worm wheel 704, the worm 705 is meshed with the worm wheel 704, the worm is located inside the grinding cavity cover 701 and is movably connected with the grinding cavity cover 701, an adjusting shaft 706 is fixed at the center, one end of the adjusting shaft 706 is rotatably connected with the grinding cavity cover 701, and an adjusting wheel disc 707 is fixedly connected with the other end of the grinding cavity cover 706.
Advance thick liquid pipe assembly 8 and include that waste pulp advances pipe 801, wood pulp advances pipe 802, centrifugal slurry pump 803 and mix thick liquid pipe 804, waste pulp advances the one end of pipe 801 and the input fixed connection of centrifugal slurry pump 803, wood pulp advances the one end of pipe 802 and advances the fixed intercommunication in pipe 801 center with waste pulp, the one end of mixing thick liquid pipe 804 and the output fixed connection of centrifugal slurry pump 803, the other end and the feed inlet 504 top fixed connection of mixing thick liquid pipe 804.
The turntable 605 is provided with a plurality of slurry through holes which are distributed in a circular array by taking the center of the turntable 605 as the center of a circle.
The center of the pulping disc 606 is provided with a through hole, and the surface of one side of the pulping disc 606 is provided with a plurality of pulp passing grooves which are uniformly distributed.
The working principle of the invention is as follows:
when the double-disc pulping equipment is used, long fiber pulp or middle fiber pulp is introduced into a waste paper pulp inlet pipe 801, wood pulp fiber is introduced into a wood pulp inlet pipe 802, a centrifugal pulp pump 803 is started, two kinds of pulp are mixed according to a certain proportion and then pumped into a pulp inlet bin 5 through a mixed pulp pipe 804 and a feed inlet 504, a motor 2 is started, the output end of the motor 2 drives the input end of a speed reducer 3 to rotate through a coupler 201, the output end of the speed reducer 3 drives a main shaft 503 to rotate through a connecting sleeve 403, the main shaft 503 drives a rotary disc 605 to rotate in a grinding cavity shell 601, the rotary disc 605 drives a grinding disc 606 fixed on the rotary disc 605 to rotate, the mixed pulp respectively reaches a gap between the grinding disc 606 and a groove on the surface of the grinding disc 606 through a grinding disc fixing plate 604 and a through hole on the center of the grinding disc 606, the mixed pulp is beaten through relative movement between the grinding discs 606, fibers in the mixed pulp are divided into fibers and broomed, and the beaten pulp is taken out through centrifugal force and the pumped pressure and is sent out through a discharge port 602 and a pulp outlet pipe 9;
the adjusting wheel disc 707 is rotated to drive the adjusting shaft 706 to rotate, the adjusting shaft 706 drives the worm 705 to rotate, the worm 705 drives the worm wheel 704 to rotate, the worm wheel 704 is in threaded connection with the screw shaft 702, the adjusting screw shaft 702 slides in the grinding cavity cover 701, and the screw shaft 702 drives the grinding disc movable plate 607 to move, so that the grinding disc movable plate 607 is close to or far away from the rotating disc 605, and the size of the gap between the rotating disc 605 and the grinding disc movable plate 607 is adjusted; after finishing refining, the residual pulp in the pulp inlet bin 5 and the disc grinding chamber 6 can be discharged through the discharge valve 603.
The foregoing is merely exemplary and illustrative of the principles of the present invention and various modifications, additions and substitutions of the specific embodiments described herein may be made by those skilled in the art without departing from the principles of the present invention or exceeding the scope of the claims set forth herein.
Claims (2)
1. A manufacturing process of box paperboard is characterized in that: the method specifically comprises the following steps:
step S1, wood pulp slurry preparation: conveying a wood pulp paperboard into a hydrapulper through a chain plate machine, adding clear water into the pulper, pulping the wood pulp paperboard into wood pulp slurry under the action of a rotating cutter head, adding the wood pulp slurry into pulping equipment and pulping equipment for pulping and pulping to prepare wood pulp fiber material, and pumping the wood pulp fiber material into a pre-grinding pool for later use;
step S2, mixing waste paper for pulping: respectively conveying imported waste paper and domestic waste paper raw materials into a waste paper pulper through a chain plate machine, wherein the weight ratio of the imported waste paper to the domestic waste paper is 1;
step S3, preparing surface layer paper pulp: sending short fiber pulp to a plurality of discs for concentration, sending the concentrated short fiber pulp to a screw press through a medium-concentration vertical pipe for pressing, sending the pressed short fiber pulp to a heat dispersion machine for dispersion treatment, mixing the short fiber pulp with wood pulp fiber materials, and sending the mixture to a double-disc pulp grinding device for pulping to prepare surface layer pulp;
step S4, preparing core layer paper pulp and bottom layer paper pulp: enabling the long and medium fiber mixed slurry to pass through a secondary grading sieve, and dividing the long and medium fiber mixed slurry into long fiber slurry and medium fiber slurry; feeding the long fiber pulp screened by the classifying screen into a fine screen section for purification and fine screen screening, conveying the long fiber pulp subjected to fine screening to a plurality of discs for concentration, conveying the long fiber pulp subjected to fine screening into a screw press through a medium-concentration vertical pipe after concentration for pressing, conveying the long fiber pulp subjected to pressing into a thermal dispersion machine for dispersion treatment, and conveying the wood pulp fiber material and the long fiber pulp subjected to dispersion treatment into a double-disc pulping device respectively for pulping to obtain core layer paper pulp; conveying the medium fiber pulp screened by the grading sieve to a plurality of discs for concentration, conveying the concentrated medium fiber pulp to a screw press through a medium concentration vertical pipe for pressing, and conveying the pressed medium fiber pulp to a heat dispersion machine for heat dispersion treatment to prepare bottom layer paper pulp;
the average length of short fibers in the short fiber slurry is less than 0.6mm, the average length of fibers in the medium fiber slurry is between 0.6 and 0.75mm, and the average length of long fibers in the long fiber slurry is more than 0.75mm;
step S5, preparing a box paperboard: sending the surface layer paper pulp prepared in the step S3 into a surface layer of a paper machine, respectively sending the core layer paper pulp and the bottom layer paper pulp prepared in the step S4 into a core layer and a bottom layer of the paper machine, compounding the surface layer pulp, the core layer pulp and the bottom layer pulp by the paper machine to prepare raw paper, sequentially pressing the obtained raw paper by a pressing part, drying by a front drying part, applying glue on the surface, drying by a rear drying part, flatly finishing by a calender, curling by a curling machine, rewinding, cutting into finished kraft liner paper boards, and metering and storing the finished kraft liner paper boards;
the double-disc pulping device comprises a base (1), a motor (2), a speed reducer (3), a bearing seat assembly (4), a pulp inlet bin (5), a disc grinding cavity (6), an adjusting mechanism (7), a pulp inlet pipe assembly (8) and a pulp outlet pipe (9), wherein the motor (2) is fixedly installed on one side above the base (1), the pulp inlet bin (5) is fixedly installed on the other side above the base (1), the speed reducer (3) is fixedly installed on one side, close to the motor (2), between the motor (2) and the pulp inlet bin (5), a coupler (201) is arranged between the motor (2) and the speed reducer (3), the output end of the motor (2) is fixedly connected with the input end of the speed reducer (3) through the coupler (201), the bearing seat assembly (4) is fixedly installed between the speed reducer (3) and the pulp inlet bin (5), the disc grinding cavity (6) is located on one side, far away from the bearing seat assembly (4), of the pulp inlet bin (6), the adjusting mechanism (7) is located on one side, far away from the pulp inlet bin (5), the pulp inlet pipe assembly (8) is communicated with the disc grinding cavity (9);
the slurry inlet bin (5) comprises a slurry storage shell (501), a feed inlet (504) is fixed on one side, close to the disc grinding cavity (6), of the top end of the slurry storage shell (501), the feed inlet (504) is communicated with the inside of the slurry storage shell (501), a slurry bin supporting seat (505) is arranged at the bottom end of the slurry storage shell (501), the bottom end of the slurry bin supporting seat (505) is fixedly connected with the base (1), the top end of the slurry bin supporting seat (505) is fixedly connected with the slurry storage shell (501), a main shaft (503) is arranged inside the slurry storage shell (501), a plurality of material blocking sealing rings (502) are fixedly mounted on the main shaft (503), and the plurality of material blocking sealing rings (502) are located on one side, close to the bearing seat assembly (4), inside the slurry storage shell (501);
the bearing seat assembly (4) comprises a bearing seat body (401), the bearing seat body (401) is fixed on one side of a pulp bin supporting seat (505), two thrust bearings (402) which are oppositely arranged are arranged in the bearing seat body (401), the output end of the speed reducer (3) penetrates through the side wall of the bearing seat body (401) and is fixedly connected with one thrust bearing (402), one end of a main shaft (503) penetrates through the side wall of a pulp storage shell (501) and the side wall of the bearing seat body (401) and is fixedly connected with the other thrust bearing (402), a connecting sleeve (403) is arranged between the two thrust bearings (402), and the main shaft (503) is fixedly connected with the output end of the speed reducer (3) through the connecting sleeve (403);
the disc grinding chamber (6) comprises a grinding chamber shell (601), the grinding chamber shell (601) is respectively fixedly connected with a pulp storage shell (501) and a pulp bin supporting seat (505), the inside of the grinding chamber shell (601) is communicated with the inside of a pulp inlet bin (5), a discharge port (602) is fixed at the top end of the grinding chamber shell (601), the discharge port (602) is communicated with the inside of the grinding chamber shell (601), the top end of the discharge port (602) is fixedly connected with one end of a pulp outlet pipe (9), a discharge valve (603) is fixed at the bottom end of the grinding chamber shell (601), the discharge valve (603) is communicated with the inside of the grinding chamber shell (601), and a grinding disc fixing plate (604) is fixed at one side, close to the pulp inlet bin (5), of the inside of the grinding chamber shell (601), the grinding disc comprises a grinding disc fixing plate (604), a grinding disc movable plate (607) is arranged on one side, away from a pulp inlet bin (5), of the grinding disc fixing plate (604), a rotary disc (605) is arranged between the grinding disc fixing plate (604) and the grinding disc movable plate (607), a plurality of pulp through holes are formed in the rotary disc (605), the pulp through holes are distributed in a circular array mode by taking the center of the rotary disc (605) as the circle center, the center of the rotary disc (605) is fixedly connected with the other end of a main shaft (503), two grinding discs (606) which are oppositely arranged are arranged on two sides of the rotary disc (605), and the four grinding discs (606) are respectively connected with two sides of the rotary disc (605), the grinding disc fixing plate (604) is fixedly connected with the grinding disc movable plate (607); a through hole is formed in the center of the pulping disc (606), and a plurality of uniformly distributed pulp passing grooves are formed in the surface of one side of the pulping disc (606);
the adjusting mechanism (7) comprises a grinding cavity cover (701), the grinding cavity cover (701) is fixedly connected with the grinding cavity shell (601), a spiral shaft (702) is arranged at the center of the grinding cavity cover (701), the screw shaft (702) is movably connected with the grinding cavity cover (701), one end of the screw shaft (702) is fixedly connected with the center of the grinding disc movable plate (607), a sealing ring (703) is arranged between the grinding disc movable plate (607) and the grinding cavity cover (701), the sealing ring (703) is fixedly connected with the grinding cavity cover (701), the sealing ring (703) is sleeved on the spiral shaft (702) and is in sliding connection with the spiral shaft (702), a worm wheel (704) is arranged inside the grinding cavity cover (701), the worm wheel (704) is sleeved on the spiral shaft (702) and is in threaded connection with the spiral shaft (702), the worm wheel (704) is movably connected with the grinding cavity cover (701), a worm (705) is arranged above the worm wheel (704), the worm (705) is meshed with the worm wheel (704), the worm (705) is positioned in the grinding cavity cover (701) and movably connected with the grinding cavity cover (701), the center of the worm (705) is fixed with an adjusting shaft (706), one end of the adjusting shaft (706) is rotatably connected with the grinding cavity cover (701), and the other end of the adjusting shaft (706) penetrates through the grinding cavity cover (701) and is fixedly connected with an adjusting wheel disc (707);
advance thick liquid pipe subassembly (8) and advance pipe (801), wood pulp including waste pulp, advance pipe (802), centrifugal pump (803) and mix thick liquid pipe (804), waste pulp advances the one end of pipe (801) and the input fixed connection of centrifugal pump (803), wood pulp advances the one end of pipe (802) and advances pipe (801) center fixed intercommunication with waste pulp, the one end of mixing thick liquid pipe (804) and the output fixed connection of centrifugal pump (803), the other end and feed inlet (504) top fixed connection of mixing thick liquid pipe (804).
2. A process for manufacturing a linerboard as claimed in claim 1, wherein: in the step S2, the imported waste paper is a waste box paperboard with the mass of sundries in each hundred grams of waste paper not exceeding 0.5 percent and the total mass of unqualified waste paper not exceeding 2 percent, and the domestic waste paper is a waste box paperboard with the mass of sundries in each hundred grams of waste paper not exceeding 1 percent and the total mass of unqualified waste paper not exceeding 10 percent; wherein the unqualified waste paper is book and periodical paper, newspaper and coated paper; the sundries are glass, metal, foam, plastic, wood strips and sand grains.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011446011.4A CN112626923B (en) | 2020-12-09 | 2020-12-09 | Manufacturing process of box paperboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011446011.4A CN112626923B (en) | 2020-12-09 | 2020-12-09 | Manufacturing process of box paperboard |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112626923A CN112626923A (en) | 2021-04-09 |
| CN112626923B true CN112626923B (en) | 2022-11-01 |
Family
ID=75310188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011446011.4A Active CN112626923B (en) | 2020-12-09 | 2020-12-09 | Manufacturing process of box paperboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112626923B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114381965B (en) * | 2022-02-15 | 2023-12-19 | 浙江恒川新材料有限公司 | Beating equipment is used in production of straw body paper |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1477326A (en) * | 1973-09-17 | 1977-06-22 | Beloit Corp | Method and apparatus for classifying paper fibres |
| CN102493261A (en) * | 2011-12-30 | 2012-06-13 | 东莞地龙纸业有限公司 | Production method of kraft cardboard with ultra low gram weight |
| CN105484094A (en) * | 2016-01-14 | 2016-04-13 | 河北昌泰纸业有限公司 | Low-gram-weight kraft paper produced from reclaimed waste paper and production process |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB836911A (en) * | 1955-09-01 | 1960-06-09 | Sutherland Internat Ltd | Pulp refiner |
| US4378092A (en) * | 1980-10-27 | 1983-03-29 | Cell Develop, Inc. | Method and apparatus for grinding pulp stock in pulp defibrating apparatus of the double rotating disc type |
| CN1017078B (en) * | 1990-07-24 | 1992-06-17 | 东港实业有限公司 | Full-floating double millstone |
| CN202809368U (en) * | 2012-08-13 | 2013-03-20 | 杭州江菱造纸机械设备厂 | Energy-saving type double disc pulping device |
| CN103628344B (en) * | 2013-03-27 | 2016-03-02 | 杭州江菱造纸机械设备厂 | High leakproofness double disc refiner |
| CN204626158U (en) * | 2015-02-09 | 2015-09-09 | 山东旭日东机械有限公司 | A kind of double disc refiner for improving paper pulp beating degree |
| CN104775317A (en) * | 2015-02-09 | 2015-07-15 | 李增鹏 | Dual-disk pulping machine for increasing paper pulp beating degree |
| CN204919200U (en) * | 2015-09-15 | 2015-12-30 | 江西弘泰电子信息材料有限公司 | Thick liquid system is ground in energy -conserving slurrying |
| CN205062561U (en) * | 2015-09-15 | 2016-03-02 | 江西弘泰电子信息材料有限公司 | Wet process papermaking fiberizer |
| CN106894268B (en) * | 2017-01-04 | 2018-03-20 | 山鹰国际控股股份公司 | A kind of high-strength cow boxboard and preparation method thereof |
| CN108930184A (en) * | 2017-05-27 | 2018-12-04 | 湖北申邦化纤科技有限公司 | A kind of mill component for double disc refiner |
| CN207391911U (en) * | 2017-10-25 | 2018-05-22 | 浙江华宇纸业有限公司 | A kind of refining system with pre-washing function |
| CN108252137B (en) * | 2017-12-08 | 2020-12-01 | 东莞建晖纸业有限公司 | Preparation process of high-breakage-resistance environment-friendly kraft liner board paper |
| CN208328529U (en) * | 2018-04-19 | 2019-01-04 | 玖龙纸业（太仓）有限公司 | A kind of boxboard pulping system |
| CN210287945U (en) * | 2019-08-07 | 2020-04-10 | 杭州海鑫纸业有限公司 | Double-disc pulping machine for paper fibers |
| CN110629578A (en) * | 2019-10-28 | 2019-12-31 | 安徽华城兴建材科技有限公司 | Double-disc refiner for improving stability of plate making by pulp flow method and application method thereof |
-
2020
- 2020-12-09 CN CN202011446011.4A patent/CN112626923B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1477326A (en) * | 1973-09-17 | 1977-06-22 | Beloit Corp | Method and apparatus for classifying paper fibres |
| CN102493261A (en) * | 2011-12-30 | 2012-06-13 | 东莞地龙纸业有限公司 | Production method of kraft cardboard with ultra low gram weight |
| CN105484094A (en) * | 2016-01-14 | 2016-04-13 | 河北昌泰纸业有限公司 | Low-gram-weight kraft paper produced from reclaimed waste paper and production process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112626923A (en) | 2021-04-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1268808C (en) | Processing method of regenerated corrugated base paper | |
| CN102677523B (en) | Production process of raw material for coated white board paper | |
| US3411720A (en) | Production of mechanical pulp from wood chips | |
| CN112626923B (en) | Manufacturing process of box paperboard | |
| US4324612A (en) | Process for the preparation of groundwood pulp | |
| CN106223091A (en) | A kind of brush wood wood chip defibrator process slurry substitutes OCC slurry and joins the production method copying high-grade cardboard | |
| CN105544264A (en) | Wet-strength waste paper recycling chemi-mechanical pulping system | |
| CN111663352A (en) | Mixed pulping and papermaking process | |
| CN114481659A (en) | High-strength craft paper and production process thereof | |
| CN107938421B (en) | Recycled paper manufacturing method and recycled paper | |
| CN103451984A (en) | Method for producing neutral environmental-friendly artistic card paper by adopting reclaimed waste paper as raw materials | |
| CN205662483U (en) | Modified starch's precision finishing equipment | |
| CN112878096A (en) | Production process of high-yield poplar chemi-mechanical pulp | |
| JPH0346593B2 (en) | ||
| CN217174166U (en) | Grinding device of environment-friendly pulping machine for papermaking | |
| US4247363A (en) | Process for producing stone groundwood pulp from wood chips by using a stone grinder | |
| CN114622445B (en) | Preparation process of high-bulk white cardboard | |
| CN112391866A (en) | Method for producing food packaging paper by using bagasse pulp | |
| CN103046417B (en) | Coated white board pulping process low in energy consumption | |
| CN109750554A (en) | A kind of corrugated paper preparation process and equipment | |
| CN211171381U (en) | Thick liquid line feed system | |
| CN212023862U (en) | Heating spiral with slurry flow balance function | |
| CN211772385U (en) | Pulper for sufficiently pulping | |
| CN210766163U (en) | Residue slurry recycling system for screening out of paper-making reconstituted tobacco pressure screen | |
| CN203096507U (en) | Classifying screen device for middle fibers of papermaking sizing agent |
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 | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A Manufacturing Process for Box Board Effective date of registration: 20230726 Granted publication date: 20221101 Pledgee: China Co. truction Bank Corp Ma'anshan branch Pledgor: SHANYING INTERNATIONAL HOLDING Co.,Ltd. Registration number: Y2023980049936 |