CN109629313A - A kind of preparation method of fluting medium - Google Patents
A kind of preparation method of fluting medium Download PDFInfo
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- CN109629313A CN109629313A CN201910041949.9A CN201910041949A CN109629313A CN 109629313 A CN109629313 A CN 109629313A CN 201910041949 A CN201910041949 A CN 201910041949A CN 109629313 A CN109629313 A CN 109629313A
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- 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
- D21F11/12—Making corrugated paper or board
-
- 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
- D21D1/02—Methods of beating; Beaters of the Hollander type
-
- 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
-
- 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
- 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
- D21H21/34—Ignifugeants
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- Polysaccharides And Polysaccharide Derivatives (AREA)
Abstract
The present invention relates to the processing technique field of fluting medium more particularly to a kind of preparation method of fluting medium, after wood pulp desanding defibrination, being concentrated into concentration is 20-25%, and fire retardant, modifier and waterproof agent is then added, mashing operation is carried out at 30-35 DEG C；The waterproof agent includes modified propylene acetoacetic ester and Lauxite, the modified propylene acetoacetic ester is the preparation method is as follows: by ethyl acrylate and vinyl alkyl silane mixture, after stirring 30-32min, emulsifier and water ultrasonic disperse 15-20min is added, then isothermal reaction 1.5-2h obtains the modified propylene acetoacetic ester at 80 DEG C.The fluting medium intensity that the present invention obtains is big, good toughness, and has stronger degradation capability, environmentally protective.
Description
Technical field
The present invention relates to the processing technique field of fluting medium more particularly to a kind of preparation methods of fluting medium.
Background technique
Currently, the online sale mode of extensive stock is hot, to drive the development of carrier.Therefore, for transport
The packing instructions for packing product are higher and higher on the way, especially waterproof, anticollision and in terms of have it is higher
It is required that.Present packaging industry generallys use corrugated case and packs to commodity, and corrugated board is the adherend of a multilayer, it
At least it is made of one layer of waveform core paper interlayer and a layer paperboard.It has very high mechanical strength, can support by handling process
It collides and falls and fall.The practical manifestation of corrugated case depends on three Xiang Yinsu: the structure of the characteristic and carton itself of core paper and cardboard.
Fluting medium is one of the important composition material for producing corrugated board.Fluting medium requires fiber bonding strength good,
Paper is smooth, there is preferable tightness and stiffness, it is desirable that has certain elasticity, to guarantee that manufactured carton has shockproof and resistance to pressure energy
Power.Application No. is the patents of CN201410007903 to propose " a kind of carbon fiber high-strength fluting medium and preparation method thereof ", passes through
Carbon fiber is added in body paper again, solves that existing fluting medium is at high cost, mechanical performance and the lower problem of antistatic performance, but
It is that the fluting medium toughness that the invention obtains is poor, reduces the shockproof properties of corrugated paper.
Summary of the invention
In view of the above problems, the present invention proposes a kind of preparation method of fluting medium, obtained fluting medium intensity is big, tough
Property is good, and has stronger degradation capability, environmentally protective.
In order to achieve the above object, the present invention is achieved through the following technical solutions: after wood pulp desanding defibrination, being concentrated into dense
Degree is 20-25%, and fire retardant, modifier and waterproof agent is then added, is prepared into original after carrying out mashing operation at 30-35 DEG C
Paper；The waterproof agent includes modified propylene acetoacetic ester and Lauxite, and the modified propylene acetoacetic ester will be the preparation method is as follows: will
After stirring 30-32min, emulsifier and water ultrasonic disperse 15-20min is added in ethyl acrylate and vinyl alkyl silane mixture,
Then isothermal reaction 1.5-2h obtains the modified propylene acetoacetic ester at 80 DEG C.
The present invention is when producing body paper, after wood pulp desanding defibrination, first by pulp concentration to concentration be 20-25%, then plus
Enter to be promoted the fire retardant of paper flame retardant effect and promote the modifier of timber toughness and intensity and promoted paper waterproof performance and
It is beaten at 30-35 DEG C after the waterproof agent of cushion performance, changes the mode of traditional low concentration mashing, long fibre element in wood pulp
More, the intensity of paper is mainly determined by the binding force between the intensity of cellulose itself and cellulose, and the length of cellulose
It is largely fixed the intensity of cellulose itself, the present invention rationally controls the parameter of beating process itself, in the technique item
It is beaten under part, while long fibre element is not easy to break, fibrillating effect is good, and obtained fluting medium intensity has very while high
Good toughness destroys small, the excessively high swollen for being easy to make de-watering of slurries, fiber of temperature to the structure of cellulose itself at 30-35 DEG C
Performance decline.Ethyl methacrylate is after silanization treatment and Lauxite cooperation is in the waterproof performance for promoting fluting medium
While, moreover it is possible to the cushion performance of fluting medium is promoted, to promote the shock-proof effect of corrugated case.
Preferably, the raw material of the wood pulp uses fast-growing willow, and the present invention uses fast-growing willow for the raw material of papermaking first, nowadays
Waste Paper Recycle Technique is more mature, and artificial fast-growing woods can satisfy the demand of the high-quality paper-making industry in part, fast-growing willow growth week
Phase is short, and molding is fast, and obtained wood-cellulose is long, good toughness, is conducive to the toughness and intensity that promote paper when producing body paper.
Preferably, the weight ratio of the modified methacrylic acid ethyl ester and Lauxite is (2-1): 1.
Preferably, the modifier comprises the following components in parts by weight: 5-7 parts of starch, 3-5 parts of Lauxites, 35-50 parts
Bentonite, 0.5-2 part hydroxymethyl cellulose, 8-10 parts of butyl propyleneglycol acid esters.
Bentonite cooperation starch and hydroxymethyl cellulose can promote the intensity of fluting medium, and bentonite can play support and make
With hydroxymethyl cellulose can promote bentonitic polarity, and bentonite and wood pulp inner cellulose are promoted under the action of starch
Affinity, so that bentonite dispersion is more evenly, supporting role is more effective, and butyl propyleneglycol acid esters cooperates Lauxite can be further
Improve the toughness of fluting medium so that fluting medium will not " brittle ", the case where avoiding the occurrence of cracking.
It is further preferred that the modifier the preparation method is as follows: by starch, Lauxite, bentonite and butyl third
Olefin(e) acid mixes in proportion, 10-15min is stirred at 25-30 DEG C with the revolving speed of 1000-1200rpm, then with 300-500rpm's
Revolving speed stirs 3-5h, and hydroxymethyl cellulose is added, and vacuumizes stand 8-12h after mixing evenly, and sieving obtains the modifier.
Further preferential, the mesh number of sieving is 200-400 mesh.
It is further preferred that the pressure vacuumized is -90kPa ~ -120kPa.
Preferably, the fire retardant the preparation method is as follows:
A: being dissolved in acetic acid for chitosan, after starch is added, stirs agglutination, obtains glue；
B: polybrominated diphenyl ethers and deionized water being added in glue, carries out ultrasonic disperse while stirring, then the high speed at 80 DEG C
30-60min is stirred, obtains bromination liquid after cooling；The revolving speed of the high-speed stirred is 600-800rpm；
C: bromination liquid is adjusted into pH to alkalinity, clay is added, 5-10min is reacted at 210-250 DEG C after mixing evenly, after cooling
It stands 8-12h and obtains the fire retardant.
The present invention is using chitosan as carrier, as the basic substance of fire retardant, chitosan natural environmental-protective, it is cheap can be again
It is raw and degradable, so that finally obtained fire retardant easily decomposes, have fewer environmental impacts.Dibromodiphenyl ether and clay cooperation, can be with
Cooperative flame retardant effect occurs, on the one hand, height is occurring for the class silica ingredient that clay is formed after 200 DEG C or more high-temperature process
It, can be to body paper surface migration, so that surface silicon, oxygen coalescence, form barrier layer, and then completely cut off between body paper and the external world when temperature burning
Heat transfer, achieve the effect that fire-retardant.In addition, the silicate lamellar structure in clay is dispersed in fluting medium with nanoscale
It is interior, the movement of cellulosic polymer is limited, so that body paper is easier to maintain original state when heated, and then avoids burning.Chitosan and
Dibromodiphenyl ether and clay also have good high temperature at charcoal, and when there is high temperature, fine and close layer of charcoal can be formed on body paper surface,
Starvation carries out fire-retardant.
It is further preferred that the power of ultrasonic disperse described in step B is 200-300w, the time of ultrasonic disperse is 1-2h.
It is further preferred that the concentration of acetic acid described in step A is less than 5%.
The beneficial effects of the present invention are: the fluting medium compression strength that the present invention obtains is high, there is biggish ring crush intensity；
Good toughness has stronger cushion performance, the advantageous shock-absorbing performance for promoting corrugated case；In rain erosion, it is not easy junk, is stablized
Property is good, can keep original shape and certain mechanical strength；There is degradable ability, it is environmentally protective.
Specific embodiment
This specific implementation method is only explanation of the invention, is not limitation of the present invention.Those skilled in the art
Member's any change made after having read specification of the invention, as long as within the scope of the claims, it all will be by
To the protection of Patent Law.
Embodiment 1:
A kind of preparation method of fluting medium, after fast-growing willow starches desanding defibrination, being concentrated into concentration is 20%, is then added fire-retardant
Agent, modifier and waterproof agent carry out mashing operation at 30 DEG C, the same traditional handicraft of other steps；The waterproof agent includes
Modified methacrylic acid ethyl ester and Lauxite, the modified methacrylic acid ethyl ester is the preparation method is as follows: press the weight ratio of 2:1
By ethyl methacrylate and vinyl alkyl silane mixture, after stirring 30min, emulsifier and water ultrasonic disperse 15min is added,
Then isothermal reaction 1.5h obtains modified methacrylic acid ethyl ester at 80 DEG C.
The fire retardant the preparation method is as follows:
A: after chitosan is dissolved in the acetic acid that concentration is 3%, after starch is added, agglutination is stirred, glue is obtained；
B: polybrominated diphenyl ethers and deionized water being added in glue, carries out ultrasonic disperse, power 200w while stirring, and the time is
1h, then the high-speed stirred 30min at 80 DEG C, obtains bromination liquid after cooling；The revolving speed of the high-speed stirred is 600rpm；
C: bromination liquid is adjusted into pH to alkalinity, clay is added, reacts 5min at 210 DEG C after mixing evenly, stands 8h after cooling
Obtain the fire retardant.
The modifier the preparation method is as follows: by 5kg starch, 3kg Lauxite, 35kg bentonite and 8kg butyl third
Olefin(e) acid mixes in proportion, stirs 10min at 25 DEG C with the revolving speed of 1000rpm, then stirs 3h with the revolving speed of 300rpm, is added
0.5kg hydroxymethyl cellulose vacuumizes stand 8h after mixing evenly, crosses 200 meshes and obtains the modifier.
Embodiment 2:
A kind of preparation method of fluting medium, after wood pulp desanding defibrination, being concentrated into concentration is 25%, and fire retardant is then added, improves
Agent and waterproof agent carry out mashing operation at 35 DEG C, the same traditional handicraft of other steps；The waterproof agent includes modified methyl
Ethyl acrylate and Lauxite, the modified methacrylic acid ethyl ester is the preparation method is as follows: by the weight ratio of 1:1 by methyl-prop
After stirring 32min, emulsifier and water ultrasonic disperse 20min is added, then 80 in olefin(e) acid ethyl ester and vinyl alkyl silane mixture
Isothermal reaction 2h obtains modified methacrylic acid ethyl ester at DEG C.
The fire retardant the preparation method is as follows:
A: being dissolved in acetic acid for chitosan, after starch is added, stirs agglutination, obtains glue；
B: polybrominated diphenyl ethers and deionized water being added in glue, carries out ultrasonic disperse, power 300w while stirring, and the time is
2h, then the high-speed stirred 60min at 80 DEG C, obtains bromination liquid after cooling；The revolving speed of the high-speed stirred is 800rpm；
C: bromination liquid is adjusted into pH to alkalinity, clay is added, reacts 10min at 250 DEG C after mixing evenly, is stood after cooling
12h obtains the fire retardant.
The modifier the preparation method is as follows: by 7kg starch, 5kg Lauxite, 50kg bentonite and 10kg butyl third
Olefin(e) acid mixes in proportion, stirs 15min at 30 DEG C with the revolving speed of 1200rpm, then stirs 5h with the revolving speed of 500rpm, is added
2kg hydroxymethyl cellulose vacuumizes stand 12h after mixing evenly, crosses 400 meshes and obtains the modifier.
Embodiment 3:
A kind of preparation method of fluting medium, after wood pulp desanding defibrination, being concentrated into concentration is 22%, and fire retardant is then added, improves
Agent and waterproof agent carry out mashing operation at 33 DEG C, the same traditional handicraft of other steps；The waterproof agent includes modified methyl
Ethyl acrylate and Lauxite, the modified methacrylic acid ethyl ester is the preparation method is as follows: by the weight ratio of 1.5:1 by methyl
Ethyl acrylate and vinyl alkyl silane mixture after stirring 30min, are added emulsifier and water ultrasonic disperse 15min, then exist
Isothermal reaction 1.8h obtains modified methacrylic acid ethyl ester at 80 DEG C.
The fire retardant the preparation method is as follows:
A: being dissolved in acetic acid for chitosan, after starch is added, stirs agglutination, obtains glue；
B: polybrominated diphenyl ethers and deionized water being added in glue, carries out ultrasonic disperse, power 250w while stirring, and the time is
1.5h, then the high-speed stirred 45min at 80 DEG C, obtains bromination liquid after cooling；The revolving speed of the high-speed stirred is 700rpm；
C: bromination liquid is adjusted into pH to alkalinity, clay is added, reacts 8min at 240 DEG C after mixing evenly, stands 10h after cooling
Obtain the fire retardant.
The modifier the preparation method is as follows: by 6kg starch, 4kg Lauxite, 42kg bentonite and 9kg butyl third
Olefin(e) acid mixes in proportion, stirs 12min at 28 DEG C with the revolving speed of 1100rpm, then stirs 4h with the revolving speed of 400rpm, is added
1kg hydroxymethyl cellulose, vacuumizes after mixing evenly, and 10h is stood under the pressure of -105kPa, crosses 300 meshes and obtains described change
Into agent.
Embodiment 4:
A kind of preparation method of fluting medium, after fast-growing willow starches desanding defibrination, being concentrated into concentration is 20%, is then added fire-retardant
Agent, modifier and waterproof agent carry out mashing operation at 30 DEG C, the same traditional handicraft of other steps；The waterproof agent includes
Modified methacrylic acid ethyl ester and Lauxite, the modified methacrylic acid ethyl ester is the preparation method is as follows: press the weight ratio of 2:1
By ethyl methacrylate and vinyl alkyl silane mixture, after stirring 31min, emulsifier and water ultrasonic disperse 18min is added,
Then isothermal reaction 1.5h obtains modified methacrylic acid ethyl ester at 80 DEG C.
The fire retardant the preparation method is as follows:
A: after chitosan is dissolved in the acetic acid that concentration is 3%, after starch is added, agglutination is stirred, glue is obtained；
B: polybrominated diphenyl ethers and deionized water being added in glue, carries out ultrasonic disperse, power 200w while stirring, and the time is
1h, then the high-speed stirred 30min at 80 DEG C, obtains bromination liquid after cooling；The revolving speed of the high-speed stirred is 600rpm；
C: bromination liquid is adjusted into pH to alkalinity, clay is added, reacts 5min at 210 DEG C after mixing evenly, stands 8h after cooling
Obtain the fire retardant.
The modifier the preparation method is as follows: by 6kg starch, 4kg Lauxite, 40kg bentonite and 8kg butyl third
Olefin(e) acid mixes in proportion, stirs 10min at 25 DEG C with the revolving speed of 1000rpm, then stirs 3h with the revolving speed of 300rpm, is added
1kg hydroxymethyl cellulose, vacuumizes after mixing evenly, and 8h is stood under the pressure of -120kPa, and 2,300 meshes excessively obtain described
Modifier.
Embodiment 5:
A kind of preparation method of fluting medium, after wood pulp desanding defibrination, being concentrated into concentration is 25%, and fire retardant is then added, improves
Agent and waterproof agent carry out mashing operation at 35 DEG C, the same traditional handicraft of other steps；The waterproof agent includes modified methyl
Ethyl acrylate and Lauxite, the modified methacrylic acid ethyl ester is the preparation method is as follows: by the weight ratio of 1:1 by methyl-prop
After stirring 30min, emulsifier and water ultrasonic disperse 15min is added, then 80 in olefin(e) acid ethyl ester and vinyl alkyl silane mixture
Isothermal reaction 2h obtains modified methacrylic acid ethyl ester at DEG C.
The fire retardant the preparation method is as follows:
A: being dissolved in acetic acid for chitosan, after starch is added, stirs agglutination, obtains glue；
B: polybrominated diphenyl ethers and deionized water being added in glue, carries out ultrasonic disperse, power 300w while stirring, and the time is
2h, then the high-speed stirred 30min at 80 DEG C, obtains bromination liquid after cooling；The revolving speed of the high-speed stirred is 600rpm；
C: bromination liquid is adjusted into pH to alkalinity, clay is added, reacts 10min at 250 DEG C after mixing evenly, is stood after cooling
12h obtains the fire retardant.
The modifier the preparation method is as follows: by 6kg starch, 5kg Lauxite, 50kg bentonite and 8kg butyl third
Olefin(e) acid mixes in proportion, stirs 15min at 30 DEG C with the revolving speed of 1200rpm, then stirs 5h with the revolving speed of 500rpm, is added
2kg hydroxymethyl cellulose, vacuumizes after mixing evenly, and 12h is stood under the pressure of -90kPa, crosses 400 meshes and obtains described change
Into agent.
The obtained fluting medium of embodiment 1-5 is tested for the property according to GB/T 13023-2008, is obtained such as following table institute
The data shown:
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of preparation method of fluting medium, it is characterised in that: after wood pulp desanding defibrination, being concentrated into concentration is 20-25%,
Then fire retardant, modifier and waterproof agent is added, is prepared into body paper after carrying out mashing operation at 30-35 DEG C；The waterproof
Auxiliary agent includes modified methacrylic acid ethyl ester and Lauxite, and the modified methacrylic acid ethyl ester is the preparation method is as follows: by first
After stirring 30-32min, emulsifier and water ultrasonic disperse 15- is added in base ethyl acrylate and vinyl alkyl silane mixture
20min, then isothermal reaction 1.5-2h obtains the modified methacrylic acid ethyl ester at 80 DEG C.
2. a kind of preparation method of fluting medium according to claim 1, it is characterised in that: the modified methacrylic acid
The weight ratio of ethyl ester and Lauxite is (2-1): 1.
3. a kind of preparation method of fluting medium according to claim 1, it is characterised in that: the raw material of the wood pulp uses
Fast-growing willow.
4. a kind of preparation method of fluting medium according to claim 1, which is characterized in that the modifier includes following
The component of parts by weight: 5-7 parts of starch, 3-5 parts of Lauxites, 35-50 parts of bentonites, 0.5-2 parts of hydroxymethyl celluloses, 8-10 parts
Butyl propyleneglycol acid esters.
5. a kind of preparation method of fluting medium according to claim 4, which is characterized in that the preparation side of the modifier
Method is as follows: starch, Lauxite, bentonite and butylacrylic acid being mixed in proportion, with 1000-1200rpm at 25-30 DEG C
Revolving speed stir 10-15min, 3-5h is then stirred with the revolving speed of 300-500rpm, hydroxymethyl cellulose is added, after mixing evenly
It vacuumizes and stands 8-12h, sieving obtains the modifier.
6. a kind of preparation method of fluting medium according to claim 5, it is characterised in that: the mesh number of the sieving is
200-400 mesh.
7. a kind of preparation method of fluting medium according to claim 5, it is characterised in that: the pressure vacuumized
For -90kPa ~ -120kPa.
8. a kind of preparation method of fluting medium according to claim 1, which is characterized in that the fire retardant preparation method
It is as follows:
A: being dissolved in acetic acid for chitosan, after starch is added, stirs agglutination, obtains glue；
B: polybrominated diphenyl ethers and deionized water being added in glue, carries out ultrasonic disperse while stirring, then the high speed at 80 DEG C
30-60min is stirred, obtains bromination liquid after cooling；The revolving speed of the high-speed stirred is 600-800rpm；
C: bromination liquid is adjusted into pH to alkalinity, clay is added, 5-10min is reacted at 210-250 DEG C after mixing evenly, after cooling
It stands 8-12h and obtains the fire retardant.
9. a kind of preparation method of fluting medium according to claim 8, it is characterised in that: ultrasonic disperse described in step B
Power be 200-300w, time of ultrasonic disperse is 1-2h.
10. a kind of preparation method of fluting medium according to claim 8, it is characterised in that: acetic acid described in step A it is dense
Degree is less than 5%.
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| CN110618713A (en) * | 2019-08-19 | 2019-12-27 | 江苏星光新材料科技有限公司 | Temperature constant system in corrugated medium production process |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110618713A (en) * | 2019-08-19 | 2019-12-27 | 江苏星光新材料科技有限公司 | Temperature constant system in corrugated medium production process |
| CN113529470A (en) * | 2021-07-23 | 2021-10-22 | 东莞顺裕纸业有限公司 | Production process of high-strength waterproof corrugated paper |
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