CN107384248A - Cardboard adhesive based on starch and preparation method thereof - Google Patents

Cardboard adhesive based on starch and preparation method thereof Download PDF

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Publication number
CN107384248A
CN107384248A CN201710701548.2A CN201710701548A CN107384248A CN 107384248 A CN107384248 A CN 107384248A CN 201710701548 A CN201710701548 A CN 201710701548A CN 107384248 A CN107384248 A CN 107384248A
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Prior art keywords
starch
farinaceous size
alkali lye
quality
adhesive
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CN201710701548.2A
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Chinese (zh)
Inventor
张文学
魏志理
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Chengdu Jiuhua Yiyuan Packaging Co Ltd
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Chengdu Jiuhua Yiyuan Packaging Co Ltd
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Priority to CN201710701548.2A priority Critical patent/CN107384248A/en
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J103/00Adhesives based on starch, amylose or amylopectin or on their derivatives or degradation products
    • C09J103/12Amylose; Amylopectin; Degradation products thereof
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02Non-macromolecular additives
    • C09J11/04Non-macromolecular additives inorganic
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/38Boron-containing compounds
    • C08K2003/387Borates
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/02Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure

Abstract

The invention discloses cardboard adhesive based on starch and preparation method thereof, the cardboard adhesive based on starch includes starch, dissolves starch and prepare the solvent, alkali lye, borax of farinaceous size, the pH value of alkali lye regulation farinaceous size to 89;The preparation method of cardboard adhesive based on starch, including prepare farinaceous size;Alkali lye is added to farinaceous size, the farinaceous size temperature is 36 38 DEG C, adjusts the pH value of farinaceous size to 89 and prepares weakly alkaline farinaceous size, continues thereafter with heating, stirs farinaceous size to the gelatinization point of farinaceous size, prepare starch paste;Starch paste is cooled to after 30 DEG C and adds borax, stirs finished product cardboard adhesive.The present invention reduces glue step in the case of no reduction glue time, disposably adds alkali lye, reduces weighting error, improves glue reliability and stability.

Description

Cardboard adhesive based on starch and preparation method thereof
Technical field
The present invention relates to a kind of starch adhesive and preparation method, and in particular to cardboard adhesive and its system based on starch Preparation Method.
Background technology
Corrugated board is the adherend of a multilayer, and it is at least made up of one layer of waveform core paper interlayer and a layer paperboard. It has very high mechanical strength, can support collision in by handling process and fall and fall.The practical manifestation of corrugated case depends on three Factor:The structure of the characteristic and carton of core paper and cardboard in itself.The bonding strength of corrugated paper board is physical to corrugated board progress The important indicator that can be examined.The adhesion process of corrugated board includes physical change and the chemical change of complexity, mainly takes Certainly include viscosity, pH value, gelatinization point, solids content etc. in the quality of mucilage of starch agent, the physical and chemical index of mucilage of starch agent and refer to Mark, the change of these indexs directly affect the bonding strength of corrugated board.
At present, starch adhesive, traditional one-step method glue are typically prepared using traditional one-step method glue method:Add at twice Caustic soda, causes the gradual expansion of starch granules, and produces viscosity and suspension effect, and when starch gradually expands, paste viscosity also can It is gradually increasing, one-step method alkali lye residual, viscosity can be continuously increased, and to very temperature sensitive, temperature is higher, and viscosity, which rises, gets over It hurry up, when starch granules is expanded to a certain degree, after its viscosity reaches required standard, now addition viscosity stabiliser is (stable Agent), to neutralize excessive alkali, do not allow starch granules to continue to expand, viscosity is not continued to rise, and the control of paste viscosity is made In the range of;Such a way, alkali lye need to add twice, just can guarantee that viscosity steadily rises, and automatic glue making machine is not due to stopping Stirring produces vibration, and interference is produced to weighing sensor, adds the error of alkali lye and larger twice, and error adds 0.5% or so Add stabilizer that error also occurs, cause adhesive bad stability, the viscosity of adhesive is difficult to control, it is steady after viscosity mistake Height, the bonding strength of corrugated paper board, spread and adhesive permeability are adversely affected.
The content of the invention
The technical problems to be solved by the invention are tradition by adding alkali lye twice and being glued using the stable adhesive of stabilizer Adhesive performance prepared by the one-step method glue method of degree change it is unstable, and it is an object of the present invention to provide cardboard adhesive based on starch and Its preparation method, solve the problems, such as that starch adhesive performance prepared by traditional one-step method glue method is unstable.
The present invention is achieved through the following technical solutions:
Cardboard adhesive based on starch, including starch, dissolve starch and prepare the solvent, alkali lye, borax of farinaceous size, The pH value of alkali lye regulation farinaceous size is to 8-9.
Use starches as board pasted material, it is necessary to by heating, and add other chemical substances, change of starch Kernel structure, it is gelatinized swelling and intersperse among in water, change the physics and chemical characteristic of starch, improve starch molecule and paper fiber Compatibility, improve the mobility and permeability of starch-hydrocolloid, the requirement of corrugated board production technique could be met.The present invention does not adopt With stabilizer come the temperature of inhibited starch adhesive, avoid what is occurred when weighing error or the addition that addition stabilizer occurs Starch adhesive viscosity is unstable caused by human error, and viscosity rising is too fast, and viscosity is too high;Disposable addition of the invention is slightly Excessive alkali lye so that farinaceous size is in alkalescent, by heating mode, accelerates gelatinization reaction of the starch under alkali lye effect, Make adhesive slurry viscosity fast lifting, then by way of reducing temperature, slow down gelatinization reaction speed, prevent that viscosity is quick Increase, during adhesive use, adhesive constantly circulates, stirs and viscosity can be made to diminish, and offsets under low temperature environment slowly The incrementss of gelatinization reaction viscosity, so adhesive viscosity B coefficent is little in the service life of 3 hours;The present invention is not being reduced Reduce glue step in the case of the glue time, disposably add alkali lye, reduce weighting error, improve glue reliability and steady It is qualitative.The present invention does not add stabilizer, can ensure the alkalescence of adhesive, in production process, because also having slightly in adhesive Excessive alkali lye, it in identical vapor (steam) temperature, can accelerate adhesive gelatinization reaction speed;The slightly excessive caustic soda of the present invention has Effect reduces gelatinization point, and gelatinization point must match with production line vapor (steam) temperature, paper wood characteristic and speed of production, gelatinization point Too high, starch is not easy to cure, and causes viscous and bad.
The alkali lye is the caustic soda of concentration 33.3%.Caustic soda is used to reduce gelatinization point, and controls viscosity.Starch Particle due to itself there is very strong cohesive force, hydrone to be not easily penetrated into, it is necessary to bring hydrone into by the strength of paste agent In starch granules, weaken starch polymer intermolecular forces, reduce gelatinization point.Secondly, can be put when paste agent is dissolved in starch fluid Go out certain heat, expand starch granules, produce stickiness, can also make amylan that there is good mobility, and be not easy mouldy It is rotten, in cardboard industry, caustic soda is typically selected as paste agent.
The quality of starch accounts for the 22%-25% of finished paper board adhesive gross mass, the quality of borax and the mass ratio of starch For:0.007-0.012:1.000, the quality of the alkali lye and the mass ratio of starch are:0.061-0.071:1.000.Starch exists The mass percent of made finished product cardboard adhesive is solid content, and solid content is higher, and bonding strength is better, but cost is more high two-sided Machine 22%~25%;Influence of the borax to adhesive index, can not be measured with instrument, can only be bonded and imitated according to corrugated board Fruit is adjusted, and air humidity changes in weather, and borax amount needs corresponding adjustment, adjusting range according to content of starch and Fixed, air humidity is higher, and borax amount should be more;Caustic soda dosage can not be excessive, and it is many to add excessive caustic soda residual volume, caustic soda Residual volume is more, and the viscosity of starch adhesive is more unstable, it is difficult to control, and also the present invention does not use in stabilizer and caustic soda, Therefore, the amount of caustic soda must be controlled strictly in the present invention, keep the alkalescent of farinaceous size.
The starch is made up of amylose, amylopectin, and the quality of the amylose accounts for the 15% of starch gross mass ~28%, the quality of the amylopectin accounts for the 72%~85% of starch gross mass.Starch includes amylose and amylopectin, In adhesion process, because of the penetration of amylose molecule, the grasping force of its shape of branched amylopectin molecules such as branch, when starch After grain infiltration is impregnated on the inside of the facial tissue and core paper of corrugated board, is gradually expanded in the presence of temperature, reach gelatinization point, just Start to bond;Starch granules contained humidity evaporates, and part is absorbed by facial tissue and core paper, paper, core paper, corrugation in amylan links Turn into an entirety with facial tissue, reach the purpose of bonding.
The quality of the starch accounts for the 25% of finished paper board adhesive, and the quality of alkali lye and the mass ratio of starch are: 0.066:1.000, the quality of borax and the mass ratio of starch are:0.010:1.000.The present invention combines existing glue amount, system Glue time and viscose glue agent parameter preferably go out optimal proportioning, obtain cost performance highest finished paper board adhesive.
The preparation method of cardboard adhesive based on starch, comprises the following steps:
S1, starch is weighed, stirring prepares farinaceous size in 36-38 DEG C of solvent by starch dissolution;
S2, the farinaceous size into step S1 add alkali lye, and the farinaceous size temperature is 36-38 DEG C, adjusts starch slurry The pH value of liquid prepares weakly alkaline farinaceous size to 8-9, continues thereafter with heating, the gelatinization temperature of stirring farinaceous size to farinaceous size Degree, prepares starch paste;
S3, the starch paste obtained in step S2 is cooled to after 30 DEG C adds borax, stirring finished product cardboard is gluing Agent.
The present invention disposably adds slight excess of alkali lye so that farinaceous size is in alkalescent, by heating mode, is accelerated Gelatinization reaction of the starch under alkali lye effect, makes adhesive slurry viscosity fast lifting, then by way of reducing temperature, subtracts Slow gelatinization reaction speed, prevents viscosity from quickly increasing, during adhesive use, adhesive constantly circulates, stirs and can make Viscosity diminishes, and the incrementss that reaction viscosity is slowly gelatinized under low temperature environment is offset, so adhesive glues in the service life of 3 hours Degree change is little;The present invention reduces glue step in the case of no reduction glue time, disposably adds alkali lye, reduces Weighting error, improve glue reliability and stability.Borax is used for the robustness for increasing binder film, tack is improved, to paste Liquid has water sorption, and principle is that the starch for making short chain forms complex compound with its hydroxyl or hydroxyl with boron atom, is not advised by these Crosslinking then, network structure is formed, there is crosslinking viscosifying action, be advantageous to improve initial bonding strength and accelerate rate of drying.
Solvent temperature in the step S1 is 36.5 DEG C;Farinaceous size temperature is 36.5 DEG C in step S2.Solvent temperature For the initial temperature of starch dissolution, certain solvent temperature is raised, is advantageous to starch and quickly dissolves in a solvent;Starch slurry liquid temperature Spend for glue temperature, if glue temperature is spent low, after alkali lye adds, viscosity rises very slow, and the glue cycle can be elongated;Such as Fruit glue temperature is too high, and viscosity rising is very fast, and operator is difficult control adhesive viscosity number.
Solvent is aqueous solvent, and alkali lye is the soda bath of concentration 33.3%.It is gluing that the quality of the starch accounts for finished product cardboard The 25% of agent, the quality of alkali lye and the mass ratio of starch are:0.066:1.000, the quality of borax and the mass ratio of starch are: 0.010:1.000.The present invention combines existing glue amount, glue time and viscose glue agent parameter and preferably goes out optimal proportioning, obtains Cost performance highest finished paper board adhesive.
Gelatinization point in the step S2 is 53 DEG C.Beaker equipped with adhesive is put and heated into boiling water, side heating While stirring adhesive with thermometer, adhesive is slowly sticky can not extremely to be stirred and adhesive temperature no longer rises, viscose glue now Agent temperature is both gelatinization point.Gelatinization point must match with production line vapor (steam) temperature, paper wood characteristic and speed of production, gelatinization Temperature is too high, and starch is not easy to cure, and causes viscous and bad.Gelatinization point is too low, and adhesive does not penetrate into paper and is just gelatinized in advance, Same Poor cohesion.
The present invention compared with prior art, has the following advantages and advantages:
1st, the cardboard adhesive of the invention based on starch does not add stabilizer, can ensure the alkalescence of adhesive, produce Cheng Zhong, because there is slight excess of alkali lye in adhesive, in identical vapor (steam) temperature, adhesive can be made to be gelatinized reaction speed Accelerate;
2nd, the preparation method of the cardboard adhesive of the invention based on starch adds the amount of skipping over caustic soda so that farinaceous size is in weak Alkalescence, the gelatinization point of starch is reduced, improve the gelatinization speed of starch;
3rd, the preparation method of the cardboard adhesive of the invention based on starch is reduced in the case of no reduction glue time Glue step, alkali lye is disposably added, reduce weighting error, improve glue reliability and stability.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, with reference to embodiment, the present invention is made Further to describe in detail, exemplary embodiment of the invention and its explanation are only used for explaining the present invention, are not intended as to this The restriction of invention.
Embodiment 1
The cardboard adhesive based on starch of the invention, including starch, dissolve starch and prepare the solvent of farinaceous size, alkali Liquid, borax, the pH value of alkali lye regulation farinaceous size to 8-9;The starch is made up of amylose, amylopectin, described The quality of amylose accounts for the 15%~28% of starch gross mass, the quality of the amylopectin account for starch gross mass 72%~ 85%;The alkali lye is the caustic soda of concentration 33.3%;The quality of starch accounts for the 22%-25% of finished paper board adhesive gross mass, The quality of borax and the mass ratio of starch are:0.007-0.012:1.000, the quality of the alkali lye and the mass ratio of starch are: 0.061-0.071:1.000.
Starch includes amylose and amylopectin, in adhesion process, because the penetration of amylose molecule, side chain form sediment The grasping force of its shape of powder molecule such as branch, after starch granules infiltration is impregnated on the inside of the facial tissue and core paper of corrugated board, Gradually expanded in the presence of temperature, reach gelatinization point, just start to bond;Starch granules contained humidity evaporates, and part quilt cover Paper and core paper absorb, and paper, core paper, corrugation and facial tissue turn into an entirety in amylan links, and reach the purpose of bonding.
Caustic soda is used to reduce gelatinization point, and controls viscosity.Starch granules because itself has very strong cohesive force, Hydrone is not easily penetrated into, it is necessary to is brought in starch granules hydrone into by the strength of paste agent, is made to make between starch polymer Firmly weaken, reduce gelatinization point.Secondly, certain heat can be released when paste agent is dissolved in starch fluid, expands starch granules, produced Raw stickiness, can also make amylan have good mobility, and be not easy moldy metamorphism, in cardboard industry, typically from caustic soda As paste agent.
Starch is solid content in the mass percent of made finished product cardboard adhesive, and solid content is higher, and bonding strength is better, But the higher Double-plate machine 22%~25% of cost;Influence of the borax to adhesive index, can not be measured with instrument, can only basis Corrugated board bonding effect is adjusted, and air humidity changes in weather, and borax amount needs corresponding adjustment, adjusting range root Depending on content of starch, air humidity is higher, and borax amount should be more;Caustic soda dosage can not be excessive, and it is residual to add excessive caustic soda Surplus is a lot, and caustic soda residual volume is more, and the viscosity of starch adhesive is more unstable, it is difficult to controls, and the present invention does not use surely Determine agent and neutralize caustic soda, therefore, the amount of caustic soda must be controlled strictly in the present invention, keep the alkalescent of farinaceous size.
Use starches as board pasted material, it is necessary to by heating, and add other chemical substances, change of starch Kernel structure, it is gelatinized swelling and intersperse among in water, change the physics and chemical characteristic of starch, improve starch molecule and paper fiber Compatibility, improve the mobility and permeability of starch-hydrocolloid, the requirement of corrugated board production technique could be met.The present invention does not adopt With stabilizer come the temperature of inhibited starch adhesive, avoid what is occurred when weighing error or the addition that addition stabilizer occurs Starch adhesive viscosity is unstable caused by human error, and viscosity rising is too fast, and viscosity is too high;Disposable addition of the invention is slightly Excessive alkali lye so that farinaceous size is in alkalescent, by heating mode, accelerates gelatinization reaction of the starch under alkali lye effect, Make adhesive slurry viscosity fast lifting, then by way of reducing temperature, slow down gelatinization reaction speed, prevent that viscosity is quick Increase, during adhesive use, adhesive constantly circulates, stirs and viscosity can be made to diminish, and offsets under low temperature environment slowly The incrementss of gelatinization reaction viscosity, so adhesive viscosity B coefficent is little in the service life of 3 hours;The present invention is not being reduced Reduce glue step in the case of the glue time, disposably add alkali lye, reduce weighting error, improve glue reliability and steady It is qualitative.The present invention does not add stabilizer, can ensure the alkalescence of adhesive, in production process, because also having slightly in adhesive Excessive alkali lye, it in identical vapor (steam) temperature, can accelerate adhesive gelatinization reaction speed;The slightly excessive caustic soda of the present invention has Effect reduces gelatinization point, and gelatinization point must match with production line vapor (steam) temperature, paper wood characteristic and speed of production, gelatinization point Too high, starch is not easy to cure, and causes viscous and bad.
Embodiment 2
The quality of the starch accounts for the 25% of finished paper board adhesive, and the quality of alkali lye and the mass ratio of starch are: 0.066:1.000, the quality of borax and the mass ratio of starch are:0.010:1.000.The present invention combines existing glue amount, system Glue time and viscose glue agent parameter preferably go out optimal proportioning, obtain cost performance highest finished paper board adhesive, make to make into 25% high solids content, the characteristic of the low viscosity of 16 seconds and 53 DEG C of low gelatinization point, effectively energy-conservation is presented in product cardboard adhesive, Improve production efficiency.
Embodiment 3
The preparation method of cardboard adhesive based on starch, comprises the following steps:
S1, starch is weighed, stirring prepares farinaceous size in 36-38 DEG C of solvent by starch dissolution;
S2, the farinaceous size into step S1 add alkali lye, and the farinaceous size temperature is 36-38 DEG C, adjusts starch slurry The pH value of liquid prepares weakly alkaline farinaceous size to 8-9, continues thereafter with heating, the gelatinization temperature of stirring farinaceous size to farinaceous size Degree, prepares starch paste;
S3, the starch paste obtained in step S2 is cooled to after 30 DEG C adds borax, stirring finished product cardboard is gluing Agent.
Solvent is aqueous solvent, and alkali lye is the soda bath of concentration 33.3%.
The present invention disposably adds slight excess of alkali lye so that farinaceous size is in alkalescent, by heating mode, is accelerated Gelatinization reaction of the starch under alkali lye effect, makes adhesive slurry viscosity fast lifting, then by way of reducing temperature, subtracts Slow gelatinization reaction speed, prevents viscosity from quickly increasing, during adhesive use, adhesive constantly circulates, stirs and can make Viscosity diminishes, and the incrementss that reaction viscosity is slowly gelatinized under low temperature environment is offset, so adhesive glues in the service life of 3 hours Degree change is little;The present invention reduces glue step in the case of no reduction glue time, disposably adds alkali lye, reduces Weighting error, improve glue reliability and stability.Borax is used for the robustness for increasing binder film, tack is improved, to paste Liquid has water sorption, and principle is that the starch for making short chain forms complex compound with its hydroxyl or hydroxyl with boron atom, is not advised by these Crosslinking then, network structure is formed, there is crosslinking viscosifying action, be advantageous to improve initial bonding strength and accelerate rate of drying.
Embodiment 4
Based on embodiment 3, the quality of the starch accounts for the 25% of finished paper board adhesive, the quality of alkali lye and the matter of starch Measuring ratio is:0.066:1.000, the quality of borax and the mass ratio of starch are:0.010:Solvent in 1.000, the step S1 Temperature is 36.5 DEG C;Farinaceous size temperature is 36.5 DEG C in step S2.Solvent temperature is the initial temperature of starch dissolution, raises one Fixed solvent temperature, be advantageous to starch and quickly dissolve in a solvent;Farinaceous size temperature is glue temperature, if glue temperature degree Too low, after alkali lye adds, viscosity rising is very slow, and the glue cycle can be elongated;If glue temperature is too high, viscosity rises very It hurry up, operator is difficult control adhesive viscosity number.The present invention, will by taking 1641 kilograms of a tank finished paper board adhesive gross weight as an example For 410 kilograms of starch dissolution in 1200 kilograms of water, warming while stirring obtains farinaceous size, and farinaceous size is extremely made heat It is according to the quality of alkali lye and the mass ratio of starch after glue temperature:0.066:1.000 27 kilograms of alkali lye of Standard entertion, by starch The pH value of slurries is adjusted to 8 or so, is continued thereafter with heating, stirring farinaceous size to the gelatinization point of farinaceous size, is prepared starch Paste, starch paste add 4 kilograms of boraxs after being cooled to 30 DEG C, stirring is up to starch paste viscosity stabilization, so as to finished product Cardboard adhesive;The present embodiment under starch paste preparation condition, by changing glue temperature, tests different systems in above-mentioned steps The viscosity of finished paper board adhesive at a temperature of glue and viscosity rise time preferred glue temperature most preferably;Different glue temperature The viscosity and viscosity rise time test result such as following table of starch paste under degree;
Shown in upper table, after glue temperature is less than 36 DEG C, after alkali lye adds, viscosity rising is very slow, and the glue cycle can become It is long.After if glue temperature is higher than 38 DEG C, viscosity rising is very fast, and operator is difficult control adhesive viscosity value;With reference to upper Result is stated, when glue temperature is 36.6 DEG C, viscosity and viscosity rise time parameter are optimal, it is therefore preferable that glue temperature is 36.5℃。
Embodiment 5
Based on embodiment 4, the present invention is by taking 1641 kilograms of a tank finished paper board adhesive gross weight as an example, by 410 kilograms of shallow lake Powder is dissolved in 1200 kilograms of water, and warming while stirring obtains farinaceous size, by farinaceous size by heat to adding after 36.5 DEG C 27 kilograms of alkali lye, the pH value of farinaceous size is adjusted to 8 or so, continues thereafter with heating, stirring farinaceous size to farinaceous size Gelatinization point, starch paste is prepared, starch paste adds 4 kilograms of boraxs after being cooled to 30 DEG C, stirring is until starch paste viscosity It is stable, so as to finished product cardboard adhesive.Viscosity after being stablized is 16s, and gelatinization point is 53 DEG C of finished product cardboard glue Stick.
Comparative example 1
Contrasted with embodiment 5, the present embodiment prepares finished paper board adhesive using a traditional step glue method;With a tank finished product Exemplified by 1641 kilograms of cardboard adhesive gross weight, by 410 kilograms of starch dissolution in 1200 kilograms of water, warming while stirring obtains Farinaceous size, heat it is public to be added 17 to 10 kilograms of alkali lye are first added after 36.5 DEG C by farinaceous size after stirring and dissolving is uniform Jin, heating, stirring farinaceous size are continued thereafter with to the gelatinization point of farinaceous size, starch paste is prepared, when starch paste reaches After required standard, viscosity stabiliser (stabilization agent) is now added, to neutralize excessive alkali, does not allow starch granules to continue swollen Swollen, viscosity does not continue to rise, and then adds 4 kilograms of boraxs, stirs finished product cardboard adhesive;The finished product cardboard is gluing Agent gelatinization point is 57 DEG C, viscosity 24s;The finished paper board adhesive prepared in the present embodiment using a traditional step glue method Viscosity and gelatinization point are above the viscosity and gelatinization point of the finished paper board adhesive prepared in embodiment 5 using the present invention, Illustrate that present invention gelatinization speed is fast, the gluing time is short, improves the throughput rate of corrugated board;And finished product cardboard in the present invention The viscosity of adhesive is easy to control, in the case where ensureing that the viscosity rise time is short, viscosity is controlled use in Double-plate machine it is minimum Under viscosity, Double-plate machine is 16-24s using viscosity.
Above-described embodiment, the purpose of the present invention, technical scheme and beneficial effect are carried out further Describe in detail, should be understood that the embodiment that the foregoing is only the present invention, be not intended to limit the present invention Protection domain, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc., all should include Within protection scope of the present invention.

Claims (10)

1. the cardboard adhesive based on starch, it is characterised in that including starch, the solvent for dissolving starch and preparing farinaceous size, Alkali lye, borax, the pH value of alkali lye regulation farinaceous size to 8-9.
2. the cardboard adhesive according to claim 1 based on starch, it is characterised in that the alkali lye is concentration 33.3% Caustic soda.
3. the cardboard adhesive according to claim 2 based on starch, it is characterised in that the quality of starch accounts for finished product cardboard The 22%-25% of adhesive gross mass, the quality of borax and the mass ratio of starch are:0.007-0.012:1.000 the alkali lye Quality and the mass ratio of starch be:0.061-0.071:1.000.
4. the cardboard adhesive based on starch according to any one claim in claim 1-3, it is characterised in that The starch is made up of amylose, amylopectin, and the quality of the amylose accounts for the 15%~28% of starch gross mass, institute The quality for stating amylopectin accounts for the 72%~85% of starch gross mass.
5. the cardboard adhesive according to claim 3 based on starch, it is characterised in that the quality of the starch accounts for finished product The 25% of cardboard adhesive, the quality of alkali lye and the mass ratio of starch are:0.066:1.000, the quality of borax and the matter of starch Measuring ratio is:0.010:1.000.
6. the preparation method of the cardboard adhesive based on starch according to any one claim in claim 1-5, It is characterised in that it includes following steps:
S1, starch is weighed, stirring prepares farinaceous size in 36-38 DEG C of solvent by starch dissolution;
S2, the farinaceous size into step S1 add the pH value of alkali lye regulation farinaceous size, and the farinaceous size temperature is 36-38 DEG C, the pH value for adjusting farinaceous size prepares weakly alkaline farinaceous size to 8-9, continues thereafter with heating, stirring farinaceous size to shallow lake The gelatinization point of slurry liquid, prepares starch paste;
S3, the starch paste obtained in step S2 is cooled to after 30 DEG C adds borax, stir finished product cardboard adhesive.
7. the preparation method of the cardboard adhesive according to claim 6 based on starch, it is characterised in that the step S1 In solvent temperature be 36.5 DEG C;Farinaceous size temperature is 36.5 DEG C in step S2.
8. the preparation method of the cardboard adhesive according to claim 6 based on starch, it is characterised in that solvent is water-soluble Agent, alkali lye are the soda bath of concentration 33.3%.
9. the preparation method of the cardboard adhesive according to claim 8 based on starch, it is characterised in that the starch Quality accounts for the 25% of finished paper board adhesive, and the quality of alkali lye and the mass ratio of starch are:0.066:1.000, the quality of borax Mass ratio with starch is:0.010:1.000.
10. the preparation method of the cardboard adhesive according to claim 9 based on starch, it is characterised in that the step Gelatinization point in S2 is 53 DEG C.
CN201710701548.2A 2017-08-16 2017-08-16 Cardboard adhesive based on starch and preparation method thereof Pending CN107384248A (en)

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Publication number Priority date Publication date Assignee Title
CN109109377A (en) * 2018-06-08 2019-01-01 天长市天翔包装有限公司 A kind of method of carton machine-shaping
CN111811993A (en) * 2020-08-12 2020-10-23 东莞建泰生物科技有限公司 Method for rapidly detecting viscosity of starch and application of method in production
CN111978887A (en) * 2020-08-26 2020-11-24 常熟市宏华外贸包装有限责任公司 Paste formula suitable for centralized glue making of corrugated paper
CN113150718A (en) * 2021-04-01 2021-07-23 广州大学 Preparation and application of environment-friendly flame-retardant adhesive for cartons

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109109377A (en) * 2018-06-08 2019-01-01 天长市天翔包装有限公司 A kind of method of carton machine-shaping
CN111811993A (en) * 2020-08-12 2020-10-23 东莞建泰生物科技有限公司 Method for rapidly detecting viscosity of starch and application of method in production
CN111978887A (en) * 2020-08-26 2020-11-24 常熟市宏华外贸包装有限责任公司 Paste formula suitable for centralized glue making of corrugated paper
CN113150718A (en) * 2021-04-01 2021-07-23 广州大学 Preparation and application of environment-friendly flame-retardant adhesive for cartons

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