CN115075052A - Method for preparing special glue applying powder for packaging paper - Google Patents
Method for preparing special glue applying powder for packaging paper Download PDFInfo
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- CN115075052A CN115075052A CN202210739814.1A CN202210739814A CN115075052A CN 115075052 A CN115075052 A CN 115075052A CN 202210739814 A CN202210739814 A CN 202210739814A CN 115075052 A CN115075052 A CN 115075052A
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- packaging paper
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- 239000000843 powder Substances 0.000 title claims abstract description 28
- 238000004806 packaging method and process Methods 0.000 title claims abstract description 27
- 239000003292 glue Substances 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 20
- 229920002472 Starch Polymers 0.000 claims abstract description 83
- 239000008107 starch Substances 0.000 claims abstract description 83
- 235000019698 starch Nutrition 0.000 claims abstract description 83
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 238000003756 stirring Methods 0.000 claims abstract description 24
- 102000004190 Enzymes Human genes 0.000 claims abstract description 23
- 108090000790 Enzymes Proteins 0.000 claims abstract description 23
- 238000004519 manufacturing process Methods 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 12
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 claims abstract description 10
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims abstract description 10
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 claims abstract description 10
- TVXBFESIOXBWNM-UHFFFAOYSA-N Xylitol Natural products OCCC(O)C(O)C(O)CCO TVXBFESIOXBWNM-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000011790 ferrous sulphate Substances 0.000 claims abstract description 10
- 235000003891 ferrous sulphate Nutrition 0.000 claims abstract description 10
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims abstract description 10
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims abstract description 10
- HEBKCHPVOIAQTA-UHFFFAOYSA-N meso ribitol Natural products OCC(O)C(O)C(O)CO HEBKCHPVOIAQTA-UHFFFAOYSA-N 0.000 claims abstract description 10
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 claims abstract description 10
- HEBKCHPVOIAQTA-SCDXWVJYSA-N xylitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)CO HEBKCHPVOIAQTA-SCDXWVJYSA-N 0.000 claims abstract description 10
- 229960002675 xylitol Drugs 0.000 claims abstract description 10
- 235000010447 xylitol Nutrition 0.000 claims abstract description 10
- 239000000811 xylitol Substances 0.000 claims abstract description 10
- 230000008569 process Effects 0.000 claims abstract description 9
- 239000002781 deodorant agent Substances 0.000 claims abstract description 8
- 239000012895 dilution Substances 0.000 claims abstract description 7
- 238000010790 dilution Methods 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 239000000243 solution Substances 0.000 claims abstract description 7
- 239000002994 raw material Substances 0.000 claims abstract description 4
- 238000003860 storage Methods 0.000 claims description 34
- 238000006243 chemical reaction Methods 0.000 claims description 30
- 229940088598 enzyme Drugs 0.000 claims description 22
- 238000002360 preparation method Methods 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 8
- 239000000725 suspension Substances 0.000 claims description 8
- 238000004513 sizing Methods 0.000 claims description 7
- 240000003183 Manihot esculenta Species 0.000 claims description 6
- 235000016735 Manihot esculenta subsp esculenta Nutrition 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 6
- 230000000844 anti-bacterial effect Effects 0.000 claims description 6
- 239000003899 bactericide agent Substances 0.000 claims description 6
- 239000006185 dispersion Substances 0.000 claims description 6
- 239000000428 dust Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 6
- OWEGMIWEEQEYGQ-UHFFFAOYSA-N 100676-05-9 Natural products OC1C(O)C(O)C(CO)OC1OCC1C(O)C(O)C(O)C(OC2C(OC(O)C(O)C2O)CO)O1 OWEGMIWEEQEYGQ-UHFFFAOYSA-N 0.000 claims description 3
- 239000004382 Amylase Substances 0.000 claims description 3
- 102000013142 Amylases Human genes 0.000 claims description 3
- 108010065511 Amylases Proteins 0.000 claims description 3
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 claims description 3
- 229920001353 Dextrin Polymers 0.000 claims description 3
- 239000004375 Dextrin Substances 0.000 claims description 3
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 claims description 3
- GUBGYTABKSRVRQ-PICCSMPSSA-N Maltose Natural products O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@@H]1O[C@@H]1[C@@H](CO)OC(O)[C@H](O)[C@H]1O GUBGYTABKSRVRQ-PICCSMPSSA-N 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 102000004139 alpha-Amylases Human genes 0.000 claims description 3
- 108090000637 alpha-Amylases Proteins 0.000 claims description 3
- 229940024171 alpha-amylase Drugs 0.000 claims description 3
- 235000019418 amylase Nutrition 0.000 claims description 3
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 claims description 3
- GUBGYTABKSRVRQ-QUYVBRFLSA-N beta-maltose Chemical compound OC[C@H]1O[C@H](O[C@H]2[C@H](O)[C@@H](O)[C@H](O)O[C@@H]2CO)[C@H](O)[C@@H](O)[C@@H]1O GUBGYTABKSRVRQ-QUYVBRFLSA-N 0.000 claims description 3
- 229910001424 calcium ion Inorganic materials 0.000 claims description 3
- 239000008367 deionised water Substances 0.000 claims description 3
- 229910021641 deionized water Inorganic materials 0.000 claims description 3
- 235000019425 dextrin Nutrition 0.000 claims description 3
- 239000008103 glucose Substances 0.000 claims description 3
- 230000007062 hydrolysis Effects 0.000 claims description 3
- 238000006460 hydrolysis reaction Methods 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 3
- 241000894006 Bacteria Species 0.000 claims description 2
- 238000009395 breeding Methods 0.000 claims description 2
- 230000001488 breeding effect Effects 0.000 claims description 2
- 230000001376 precipitating effect Effects 0.000 claims description 2
- 238000004026 adhesive bonding Methods 0.000 abstract description 3
- 239000000123 paper Substances 0.000 description 21
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000012856 packing Methods 0.000 description 3
- 239000011087 paperboard Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/16—Sizing or water-repelling agents
-
- 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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/005—Microorganisms or enzymes
-
- 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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/06—Alcohols; Phenols; Ethers; Aldehydes; Ketones; Acetals; Ketals
-
- 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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/07—Nitrogen-containing compounds
-
- 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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
- D21H17/24—Polysaccharides
- D21H17/28—Starch
-
- 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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/62—Rosin; Derivatives thereof
-
- 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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/63—Inorganic compounds
- D21H17/66—Salts, e.g. alums
-
- 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
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/36—Biocidal agents, e.g. fungicidal, bactericidal, insecticidal agents
-
- 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
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Microbiology (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Paper (AREA)
Abstract
The invention discloses a manufacturing method of special glue applying powder for packaging paper, which comprises the following steps: s1: preparing raw materials; s2: preparing equipment; s3: feeding; s4: dispersing; s5: adding an enzyme; s6: heating and converting; s7: adding hot water for dilution; s8: stirring with the prepared material: placing the prepared starch solution into a stirrer, adding 2.5% of acrylamide, 2.5% of xylitol, 2.5% of rosin, 2.5% of deodorant and 20% of ferrous sulfate according to the parts, uniformly stirring for one hour, and packaging and bagging after stirring. The special gumming powder for the packaging paper can obviously improve the strength of finished paper, improve the smoothness and the printing brightness of the finished paper, reduce the phenomena of printing hair and powder falling, improve the printability, improve the ring pressure of the packaging paper, resist water, control moisture regain, optimize the operation process, reduce the gluing cost of the paper and greatly reduce the using amount of starch.
Description
Technical Field
The invention relates to the field of sizing powder, in particular to a manufacturing method of special sizing powder for packaging paper.
Background
The special glue applying powder for the packaging paper aims to improve the surface strength of the paper and the paperboard and prevent the diffusion and the permeation of water-quality liquid, glue applying treatment needs to be carried out on the paper and the paperboard, the added material is called as the glue applying powder, the existing glue applying powder special for the packaging paper adopts more materials and has higher starch content, a large amount of starch can be wasted during production, the waste of grains is caused, and the preparation process is complicated.
Disclosure of Invention
The invention mainly aims to provide a manufacturing method of glue applying powder special for packaging paper, which can effectively solve the problems in the background technology.
In order to achieve the purpose, the invention adopts the technical scheme that:
the preparation method of the special glue applying powder for the packing paper comprises the following operation steps:
s1: preparation of raw materials: starch, acrylamide, xylitol, rosin, a deodorant, ferrous sulfate, wherein the starch content is 65%, the acrylamide content is 2.5%, the xylitol content is 2.5%, the rosin content is 2.5%, the deodorant content is 2.5%, the ferrous sulfate content is 20%, the bactericide content is 2.5%, and the enzyme content is 2.5%;
s2: preparation of the device: a storage bin with a screw conveyor, a dispersing tank, a stirrer, a filter, a conversion tank, a storage tank, a continuous digester and a stirrer;
s3: feeding: putting 65% of starch into a bin with a screw conveyor at the bottom according to the proportion;
s4: dispersing: connecting a dispersion tank to a discharge port of a storage bin, adding 2.5 percent of bactericide according to the parts, adding water until starch is submerged, starting a stirrer, maintaining the rotating speed at 500rpm, adding the starch into the dispersion tank through a bolt conveyor, and conveying the dispersed starch suspension into a storage tank with a stirrer through a 100-mesh filter for storage;
s5: adding an enzyme: adding the enzyme into a storage tank according to the portion, starting a stirrer, and uniformly stirring;
s6: heating and converting: when the liquid level in the starch paste storage tank reaches a preset low level, a pump is started to send starch into a conversion tank with a steam heating and stirring device, the conversion temperature is controlled to be 60-80 ℃, the conversion time of the starch in the conversion tank is maintained at about 15 minutes, the rotating speed of the stirring device of the conversion tank is maintained at 50-60rpm to ensure uniform conversion, and the pump is started to send the material to a continuous digester for gelatinization after uniform conversion;
s7: adding hot water for dilution: after the starch solution is heated, the starch is rapidly subjected to water absorption expansion, splitting and gelatinization due to high temperature difference and high pressure, simultaneously, enzymes in the material lose activity, the reaction is stopped, the cooked starch paste is added with hot water for online dilution, the starch paste is cooled while reaching the preset solid content, and then the starch paste is sent into a storage tank for storage, the gelatinization temperature is controlled to be 125 ℃, the gelatinization is incomplete due to too low temperature, and a steam automatic valve, a temperature sensor and a starch pump variable frequency motor of a continuous digester are interlocked to control the stability of the gelatinization temperature;
s8: stirring with the prepared material: placing the prepared starch solution into a stirrer, adding 2.5% of acrylamide, 2.5% of xylitol, 2.5% of rosin, 2.5% of deodorant and 20% of ferrous sulfate according to the parts, uniformly stirring for one hour, packaging and bagging after stirring is finished, and thus obtaining the special glue applying powder for packaging paper.
Preferably, when starch is added, sundries are prevented from entering the storage bin, and meanwhile, the storage bin needs to be connected with a dust remover, so that a large amount of dust generated in the feeding process is prevented from polluting air.
Preferably, the temperature of the storage tank is controlled to be more than 60 ℃, a jacket tank is adopted to introduce steam for heat preservation, and the stirring speed is kept at 30-40 rpm.
Preferably, in order to prevent the starch suspension in the pipeline from precipitating and prevent the paste in the pipeline from adsorbing the pipe wall, the pipeline is kept clean to prevent the bacteria from breeding.
Preferably, the amylase generally adopts medium-temperature alpha-amylase, the enzyme activity is generally 2000-3000u/ml, the action mechanism is to hydrolyze alpha-1, 4 glucosidic bonds of starch, long molecular chains of the starch are hydrolyzed into short molecular chains, the viscosity of gelatinized starch can be rapidly reduced after the enzyme action, dextrin, a small amount of glucose, maltose and the like are generated by hydrolysis, the pH range is 6.0-7.0, and the enzyme needs to be stored at low temperature before use.
Preferably, the high concentration of calcium ions in the process water can affect conversion, cause the high viscosity of the paste and affect sizing, and the water can be changed into deionized water for use according to the characteristics of regions.
Preferably, the starch is tapioca starch, wherein the starch only chain rate is more than 83%.
Preferably, the solid content of the starch suspension is controlled to be 20-25%, the cassava starch is added at a constant speed, the adding speed is not too high, and otherwise, the caking phenomenon is easy to generate.
Compared with the prior art, the invention has the following beneficial effects:
the special glue applying powder for the packaging paper can obviously improve the strength of the finished paper, improve the smoothness and the brightness of the finished paper, reduce the phenomena of printing hair and powder falling, improve the printability, has good compatibility with various surface sizing agents, has a simple preparation process, has more stable paste indexes and low labor intensity, can greatly reduce the labor force of workers, has the advantages of improving the ring pressure, resisting water and dampening control of the packaging paper, optimizing the operation process and reducing the gluing cost of the paper, and can also greatly reduce the using amount of starch.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to 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.
The invention relates to a manufacturing method of glue applying powder special for packaging paper, which comprises the following steps: s1: preparation of raw materials: starch, acrylamide, xylitol, rosin, a smell removing agent and ferrous sulfate, wherein the content of the starch is 65%, the content of the acrylamide is 2.5%, the content of the xylitol is 2.5%, the content of the rosin is 2.5%, the content of the smell removing agent is 2.5%, the content of the ferrous sulfate is 20%, the content of the bactericide is 2.5% and the content of the enzyme is 2.5%.
S2: preparation of the device: a storage bin with a screw conveyer, a dispersing tank, a stirrer, a filter, a conversion tank, a storage tank, a continuous digester and a stirrer.
S3: feeding: 65% of starch is put into a bin with a screw conveyor at the bottom according to the share, impurities are prevented from entering the bin when the starch is added, meanwhile, a dust remover is required to be connected into the bin, the phenomenon that a large amount of dust generated in the feeding process pollutes air is prevented, the starch is cassava starch, and the ratio of only chain starch is above 83%.
S4: dispersing: the method comprises the steps of connecting a dispersion tank to a discharge port of a storage bin, adding 2.5% of bactericide according to the proportion, adding water until starch is submerged, starting a stirrer, maintaining the rotating speed at 500rpm, adding the starch into the dispersion tank through a bolt conveyor, conveying the dispersed starch suspension into a storage tank with a stirrer through a 100-mesh filter for storage, controlling the solid content of the starch suspension to be 20% -25%, adding the cassava starch at a constant speed, controlling the adding speed not too fast, otherwise easily generating a caking phenomenon, controlling the temperature of the storage tank to be more than 60 ℃, keeping the stirring speed at 30-40rpm by adopting a jacket tank through steam for heat preservation, and changing the calcium ion concentration in process water to be too high to influence conversion, so that the viscosity of a paste liquid is too high to influence sizing, and changing the water into deionized water for use according to the characteristics of regions.
S5: adding an enzyme: adding the enzyme into a storage tank according to the proportion, starting a stirrer, and uniformly stirring the enzyme, wherein the amylase generally adopts medium-temperature alpha-amylase, the enzyme activity is generally 2000-3000u/ml, the action mechanism is to hydrolyze alpha-1, 4 glucosidic bonds of starch, and hydrolyze long molecular chains of the starch into short molecular chains, the viscosity of gelatinized starch can be rapidly reduced after the enzyme action, dextrin, a small amount of glucose, maltose and the like are generated by hydrolysis, the pH range is 6.0-7.0, and the enzyme needs to be stored at low temperature before being used.
S6: heating and converting: when the liquid level in the starch paste storage tank reaches a preset low level, a pump is started to send starch into a conversion tank with a steam heating and stirring device, the conversion temperature is controlled to be 60-80 ℃, the conversion time of the starch in the conversion tank is maintained at about 15 minutes, the rotating speed of the stirring device of the conversion tank is maintained at 50-60rpm so as to ensure uniform conversion, and the pump is started to send the material to a continuous digester for gelatinization after uniform conversion.
S7: adding hot water for dilution: after the starch liquid is heated, the starch is rapidly subjected to water absorption expansion, splitting and gelatinization under high temperature difference and pressure, simultaneously, enzymes in the material lose activity, the reaction is stopped, the cooked starch paste is added with hot water for online dilution, the starch paste is cooled while reaching the preset solid content, and then the starch paste is sent into a storage tank for storage, the gelatinization temperature is controlled to be 125 ℃, the gelatinization is incomplete when the temperature is too low, and a steam automatic valve, a temperature sensor and a starch pump variable frequency motor of a continuous digester are interlocked to control the stability of the gelatinization temperature.
S8: stirring with the prepared material: placing the prepared starch solution into a stirrer, adding 2.5% of acrylamide, 2.5% of xylitol, 2.5% of rosin, 2.5% of deodorant and 20% of ferrous sulfate according to the parts, uniformly stirring for one hour, packaging and bagging after stirring is finished, and thus the special packaging paper glue powder can be prepared.
The special glue applying powder for the packing paper can obviously improve the strength of the finished paper, improve the smoothness and the brightness of the finished paper, reduce the phenomena of printing hair and powder falling, improve the printability, has good compatibility with various surface sizing agents, has simple preparation process, has more stable paste indexes and low labor intensity, can greatly reduce the labor force of workers, has the advantages of improving the ring pressure, resisting water and dampening control of the packing paper, optimizing the operation process and reducing the gluing cost of the paper, and can also greatly reduce the using amount of starch.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The manufacturing method of the special glue applying powder for the packaging paper is characterized by comprising the following steps: the method comprises the following operation steps:
s1: preparation of raw materials: starch, acrylamide, xylitol, rosin, a deodorant, ferrous sulfate, wherein the starch content is 65%, the acrylamide content is 2.5%, the xylitol content is 2.5%, the rosin content is 2.5%, the deodorant content is 2.5%, the ferrous sulfate content is 20%, the bactericide content is 2.5%, and the enzyme content is 2.5%;
s2: preparation of the device: a storage bin with a screw conveyor, a dispersing tank, a stirrer, a filter, a conversion tank, a storage tank, a continuous digester and a stirrer;
s3: feeding: putting 65% of starch into a bin with a screw conveyor at the bottom according to the proportion;
s4: dispersing: connecting a dispersion tank to a discharge port of a storage bin, adding 2.5 percent of bactericide according to the parts, adding water until starch is submerged, starting a stirrer, maintaining the rotating speed at 500rpm, adding the starch into the dispersion tank through a bolt conveyor, and conveying the dispersed starch suspension into a storage tank with a stirrer through a 100-mesh filter for storage;
s5: adding an enzyme: adding the enzyme into a storage tank according to the portion, starting a stirrer, and uniformly stirring;
s6: heating and converting: when the liquid level in the starch paste storage tank reaches a preset low level, a pump is started to send starch into a conversion tank with a steam heating and stirring device, the conversion temperature is controlled to be 60-80 ℃, the conversion time of the starch in the conversion tank is maintained at about 15 minutes, the rotating speed of the stirring device of the conversion tank is maintained at 50-60rpm to ensure uniform conversion, and the pump is started to send the material to a continuous digester for gelatinization after uniform conversion;
s7: adding hot water for dilution: after the starch solution is heated, the starch is rapidly subjected to water absorption expansion, splitting and gelatinization due to high temperature difference and high pressure, simultaneously, enzymes in the material lose activity, the reaction is stopped, the cooked starch paste is added with hot water for online dilution, the starch paste is cooled while reaching the preset solid content, and then the starch paste is sent into a storage tank for storage, the gelatinization temperature is controlled to be 125 ℃, the gelatinization is incomplete due to too low temperature, and a steam automatic valve, a temperature sensor and a starch pump variable frequency motor of a continuous digester are interlocked to control the stability of the gelatinization temperature;
s8: stirring with the prepared material: placing the prepared starch solution into a stirrer, adding 2.5% of acrylamide, 2.5% of xylitol, 2.5% of rosin, 2.5% of deodorant and 20% of ferrous sulfate according to the parts, uniformly stirring for one hour, packaging and bagging after stirring is finished, and thus obtaining the special glue applying powder for packaging paper.
2. The method for manufacturing the glue applying powder special for the packaging paper as claimed in claim 1, is characterized in that: when starch is added, sundries are prevented from entering the storage bin, and meanwhile, the storage bin needs to be connected with a dust remover, so that a large amount of dust generated in the feeding process is prevented from polluting air.
3. The method for manufacturing the glue applying powder special for the packaging paper as claimed in claim 1, is characterized in that: the temperature of the storage tank is controlled to be above 60 ℃, a jacket tank is adopted to introduce steam for heat preservation, and the stirring speed is kept at 30-40 rpm.
4. The method for manufacturing the glue applying powder special for the packaging paper as claimed in claim 1, is characterized in that: in order to prevent the starch suspension in the pipeline from precipitating and prevent the paste in the pipeline from adsorbing the pipe wall, the pipeline is kept clean to prevent the bacteria from breeding.
5. The method for manufacturing the glue applying powder special for the packaging paper as claimed in claim 1, is characterized in that: the amylase generally adopts medium-temperature alpha-amylase, the enzyme activity is generally 2000-3000u/ml, the action mechanism is to hydrolyze alpha-1, 4 glucosidic bonds of starch, long molecular chains of the starch are hydrolyzed into short molecular chains, the viscosity of gelatinized starch can be rapidly reduced after the enzyme action, dextrin, a small amount of glucose, maltose and the like are generated by hydrolysis, the pH range is 6.0-7.0, and the enzyme needs to be stored at low temperature before being used.
6. The method for manufacturing the glue applying powder special for the packaging paper as claimed in claim 1, is characterized in that: the too high concentration of calcium ion in the process water can affect the conversion, cause the too high viscosity of the paste liquid and affect the sizing, and according to the characteristics of the region, the water can be changed into deionized water for use.
7. The method for manufacturing the glue applying powder special for the packaging paper as claimed in claim 1, is characterized in that: the starch is cassava starch, wherein the ratio of only chain starch is more than 83%.
8. The method for manufacturing the glue applying powder special for the packaging paper as claimed in claim 1, is characterized in that: the solid content of the starch suspension liquid is controlled to be 20-25%, the cassava starch is added at a constant speed, the adding speed cannot be too high, and otherwise, the caking phenomenon is easy to generate.
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Application publication date: 20220920 |