CN109778594A - Food card body paper and preparation method thereof - Google Patents
Food card body paper and preparation method thereof Download PDFInfo
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- CN109778594A CN109778594A CN201910015581.9A CN201910015581A CN109778594A CN 109778594 A CN109778594 A CN 109778594A CN 201910015581 A CN201910015581 A CN 201910015581A CN 109778594 A CN109778594 A CN 109778594A
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Abstract
This application discloses a kind of preparation method of food card body paper, include the following steps: to prepare surface layer slurry, base pastes and center stock respectively；First ASA sizing is carried out to surface layer slurry, the 2nd ASA sizing is carried out to base pastes；The sizing of rosin acidity is carried out to center stock；Surface layer slurry, center stock and base pastes are subjected to combined processing, form original paper, the bottom that the surface layer and base pastes that wherein surface layer slurry is formed are formed is located at center stock and is formed by the opposite two sides of sandwich layer；Drying and processing is carried out to original paper, forms body paper.Present invention also provides the food card body papers for using the above method to prepare.By the above-mentioned means, can be improved the structural stability and sizing efficiency of food card body paper.
Description
Technical field
This application involves pulp technology for making paper, in particular to food card body paper and preparation method thereof.
Background technique
Luxury food card body paper is mainly used for dixie cup, cutlery box, noodle bowl etc., this not only to the appearance requirement of food card body paper compared with
Height, and the product of food card body paper requires to contact with liquid in many cases, this is to the stiffness of food card body paper and water-fast
Performance is also more demanding.
Summary of the invention
The application mainly solving the technical problems that provide food card body paper preparation method and food card body paper, can solve
Difficulty is dehydrated in certainly existing food card body paper production process, and manufactured paper is easy the problem of being layered and turning to be yellow.
In order to solve the above technical problems, the application provides a kind of preparation method of food card body paper, comprising the following steps:
Surface layer slurry, base pastes and center stock are prepared respectively；
First ASA sizing is carried out to surface layer slurry, the 2nd ASA sizing is carried out to base pastes；
The sizing of rosin acidity is carried out to center stock；
Surface layer slurry, center stock and base pastes are subjected to combined processing, form original paper, wherein surface layer slurry
The bottom that the surface layer and base pastes of formation are formed is located at center stock and is formed by the opposite two sides of sandwich layer；
Drying and processing is carried out to original paper, forms body paper.
Present invention also provides a kind of food card body papers prepared using above-mentioned preparation method.
Compared with prior art, the beneficial effect of the application is: being respectively adopted first in surface layer slurry and base pastes
ASA sizing and the 2nd ASA sizing, center stock then use rosin acidity to be glued, it is possible to prevente effectively from system caused by acid sizing
Positive problem of uniting prevents paper to be layered, surface layer slurry and base pastes are adopted to effectively enhance the bonding force of paper interlayer
It is glued with ASA, effectively avoids rosin in traditional acid sizing and increase the difficulty of paper dewatering caused by the viscosity of slurry
Problem, close to neutrality, this is conducive to during paper drying and dewatering the processing environment of ASA sizing, and environment acidity height is avoided to draw
Playing the ferrous element in drying cylinder and getting rusty leads to paper contamination jaundice, influences into the appearance of paper.
Detailed description of the invention
Fig. 1 is the schematic diagram of food card body paper described in the embodiment of the present application；
Fig. 2 is the preparation flow figure of food card body paper described in the embodiment of the present application.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete
Site preparation description, it is clear that described embodiment is only a part of the embodiment of the application, instead of all the embodiments.It is based on
Embodiment in the application, those skilled in the art's every other reality obtained without making creative work
Example is applied, shall fall in the protection scope of this application.
Present inventor is by studying and testing discovery for a long period of time, if applied when producing cardboard only with acidity in starching
Glue, i.e. gum rosin and aluminum sulfate glue system, gum rosin and aluminum sulfate glue system to the control of paper machine green end system require compared with
Height easily makes system PCD the positive occurred, and especially in the case where surface layer and bottom are all made of whole wood pulp, PCD value is very
It is small, it is easy will lead to the Hydrogenbond quantity between fiber and fiber and tails off, bond strength is deteriorated, to influence the combination of paper
Intensity makes cardboard Coating combination difference or lamination occurs.And a large amount of additions of rosin and aluminum sulfate, cause plain boiled water and slurry
Viscosity increases, and also results in wet end dehydration difficulty, mass dryness fraction before page entering to dry cylinder is caused to reduce, dry difficult.In addition, paperboard surface
The rust staining that drying cylinder generates is contacted, is easy to turn yellow in the condition of acid high humility, influences the appearance and performance of food card body paper.In order to
It solves the above problems, the application provides following examples.
The food card body paper 100 of the structure of the food card body paper 100 of the present embodiment as shown in Fig. 1, the present embodiment wraps
Surface layer 110, bottom 130, sandwich layer 120 and top sizing layer 140 are included, wherein surface layer 110 and bottom 130 are located at sandwich layer 120
There can also be top sizing layer 140 on the outside of opposite two sides, surface layer 110 and bottom 130 respectively, wherein surface layer 110 and bottom
130 can be respectively adopted the first ASA sizing and the 2nd ASA sizing, such as with the ASA lotion of various concentration or same concentrations into
Row sizing, sandwich layer 120 can be then glued using rosin acidity, and top sizing layer 140 can be then glued using starch emulsion.
Fig. 2 show the preparation flow of food card body paper 100 in the present embodiment, and detailed process is as follows:
S1: surface layer slurry, center stock and base pastes are prepared respectively.
In this step, each layer slurry can be using the raw material preparation of conventional food card body paper respective layer.
S2: carrying out the first ASA sizing to surface layer slurry, carries out the 2nd ASA sizing to base pastes.
Specifically, it is that a kind of neutrality is applied that ASA full name, which is Alkenyl Succinic Anhydrides (alkenyl succinic anhydride),
Jelly, reactivity is very strong, can complete to be glued within a very short time.The ASA lotion that first ASA sizing uses is at least by the positive
Starch (i.e. cationic starch) emulsify with the ratio of 2:1~4:1 and mixes and formed with ASA stoste.2nd ASA sizing makes
ASA lotion at least by positive starch (cationic starch) and ASA stoste with the ratio of 2:1~4:1 carry out emulsification mix and
It is formed.Cationic starch can be used as stabilizer, make in emulsion process oil droplet in ASA stoste with cationic starch into
Row mixing assigns oil droplet with positive electricity, can be adsorbed on anionic cellulose when to base pastes or surface layer slurry sizing
On fiber, so that ASA lotion is relatively evenly distributed in fiber surface, sizing efficiency can be improved.
The ASA lotion and the 2nd ASA that first ASA sizing uses are glued the ASA lotion used, specifically can be ASA original
Liquid and a small amount of positive starch liquid are newborn by the ASA being mixed with again with a large amount of positive starch night after high-shear pump mixing and emulsifying
Liquid.
Specifically, it after preparing surface layer slurry and base pastes, is added respectively in administration timing of drug point into slurry corresponding
And the ASA lotion that has prepared and be uniformly mixed respectively, belong to plasm-glue-blending or internal sizing.Wherein the first ASA sizing makes
The dosage of ASA lotion is 1.2~2Kg/T, and wherein T indicates the quality of surface layer slurry.The ASA cream that 2nd ASA sizing uses
The dosage of liquid is 1.2~2Kg/T, and wherein T indicates the quality of base pastes.
In the present embodiment, the ASA lotion and the 2nd ASA that the first ASA sizing uses are glued the ASA lotion used, are made
It is identical that raw material can be all identical or parts, and mixed proportion between identical raw material can be identical or not
Together, such as the ratio between the first ASA positive starch being glued in the ASA lotion used and ASA stoste makes with the 2nd ASA sizing
Ratio between positive starch in ASA lotion and ASA stoste may be the same or different.
In this step, it can be separated step to the sizing of surface layer slurry and to the sizing of base pastes.
S3: the sizing of rosin acidity is carried out to center stock.
Specifically, after getting out center stock, corresponding administration timing of drug point be at least added into center stock rosin and
Aluminum sulfate is simultaneously uniformly mixed, and the dosage of aluminum sulfate and rosin can be respectively 10~20Kg/T, wherein the amount ratio of the two is
0.5:1~1.5:1, wherein T indicate center stock quality, it is furthermore preferred that the amount ratio of aluminum sulfate and rosin be 0.8: 1~
1.2∶1。
S4: surface layer slurry, center stock and base pastes are subjected to combined processing, form original paper.
That is, after layer slurry, base pastes and center stock are glued over there, by after sizing surface layer slurry,
Center stock and base pastes carry out combined processing.Specifically, surface layer slurry first with center stock it is compound after, then with bottom
Slurry is compound, to form original paper.In the present embodiment, original paper is not yet to carry out drying and processing.Practical compound
In the process, e.g. by three kinds of slurries be fed sequentially into respectively copy paper system forming, the original paper of formation include sandwich layer 120,
Surface layer 110 and bottom 130 are respectively corresponded and are formed by center stock, surface layer slurry and base pastes, surface layer 110 and bottom 130
It is located at the opposite two sides of sandwich layer 120.
In the present embodiment, different sizings are respectively adopted from surface layer 110, bottom 130 due to the present embodiment center core layer 120
Lotion is glued, therefore, to avoid complex compound of trivalent aluminium ion and aluminium in 120 plain boiled water of sandwich layer etc. to 110 He of surface layer
ASA lotion in bottom 130 impacts, and is individually recycled in the present embodiment to the plain boiled water of center stock, to recycle sandwich layer
The remainder of slurry.The plain boiled water of surface layer slurry and the plain boiled water of base pastes can be recycled individually, can also be recycled together.
Specifically, setting is optimized to the white-water system of paper machine, more than two white water recycle units is set in copy paper system, point
Surface layer slurry and base pastes and center stock Yong Yu not be recycled individually, prevent two kinds of glue system confusions, cause resource unrestrained
Take.
S5: drying and processing is carried out to original paper, forms body paper 100.
The original paper of forming is e.g. sent into drying cylinder and carries out drying and processing under certain pressure and suitable temperature,
Obtain body paper 100.Surface layer slurry and base pastes are glued using ASA lotion in the present embodiment, can be effectively reduced
The viscosity of slurry avoids viscosity is excessively high from causing dehydration difficulty, to effectively shorten drying time, improves production efficiency.
The present embodiment is glued by the way that the first ASA sizing and the 2nd ASA are respectively adopted in surface layer slurry and base pastes,
Center stock then uses rosin acidity to be glued, it is possible to prevente effectively from single acid glue system causes caused by the system positive excessively
The problems such as Hydrogenbond quantity between fiber and fiber tails off, and bond strength is deteriorated, to effectively enhance the viscous of paper interlayer
With joint efforts, paper is prevented to be layered.Surface layer slurry and base pastes can effectively improve single using ASA sizing type simultaneously
Acidity sizing will increase the problems such as paper dewatering caused by the viscosity of slurry is difficult, be used due to surface layer slurry and base pastes
Close to neutrality, this is conducive to during paper drying and dewatering the processing environment of ASA sizing, improves because environment acidity height causes to dry
Ferrous element in cylinder, which gets rusty, leads to problems such as paper contamination jaundice to influence appearance and performance at paper.
Further, top sizing S6: is carried out to body paper 100.
For example, the surface layer to the body paper 100 and bottom are using starch emulsion progress top sizing respectively.Such as to drying
The body paper 100 obtained after processing tiles, and top sizing stick can be used by a certain amount of starch emulsion and be equably coated in original
The surface layer 110 of paper 100 and the surface of bottom 130, namely top sizing is carried out to the surface layer 110 and bottom 130 of body paper 100, so
It is dried afterwards by the paper natural air drying after sizing or on dryer, is respectively formed surface on the surface of surface layer 110 and bottom 130
Glue application layer 140.Top sizing can further increase the stiffness of paper and enhance the water resistance of paper.
Sample 1
Prepare surface layer slurry and base pastes, is separately added into the ASA lotion prepared in corresponding administration timing of drug point and mixes
It closes uniformly, the dosage of ASA lotion is respectively 1.8Kg/T.Rosin and aluminum sulfate are added in center stock to be uniformly mixed, aluminum sulfate with
The dosage of rosin is respectively 18Kg/T.Then surface layer slurry, center stock and the base pastes after sizing are delivered to phase respectively
The fan pump answered is configured to original paper into copy paper system.The original paper of forming includes surface layer 110, sandwich layer 120 and bottom
130, then the paper of forming is sent into drying cylinder and dries obtained body paper 100, body paper 100 tiles after taking out, and uses top sizing
A certain amount of starch emulsion is equably coated in the surface layer 110 of body paper 100 and the surface of bottom 130 by stick, then will be after sizing
Paper drying.
Comparative example 1
Rosin and aluminum sulfate sizing are all made of in surface layer slurry, center stock and base pastes.Specifically, in center stock
Rosin and aluminum sulfate is added to be uniformly mixed, the dosage of aluminum sulfate and rosin is respectively 18Kg/T, in surface layer slurry and base pastes
It is separately added into the gum rosin of 6Kg/T and the aluminum sulfate of 12KG/T and is uniformly mixed respectively.By surface layer slurry, the sandwich layer after sizing
Slurry and base pastes are delivered to corresponding fan pump respectively, original paper are configured into copy paper system, then by forming
Original paper, which is sent into dry in drying cylinder, is made body paper, tiles after taking-up, using top sizing stick that a certain amount of starch emulsion is equal
It is coated in the surface layer of body paper and the surface of bottom evenly, then dries the body paper after sizing.
Comparative example 2
ASA lotion is all made of in surface layer slurry, center stock and base pastes to be glued.Specifically, in center stock
The ASA lotion of 2.0Kg/T is added and is uniformly mixed, is separately added into the ASA lotion of 1.8Kg/T simultaneously in surface layer slurry and base pastes
It is uniformly mixed respectively.Surface layer slurry, center stock and base pastes after sizing are delivered to corresponding fan pump respectively, are entered
Copy paper system is configured to original paper, and then the original paper of forming is sent into drying cylinder and dries obtained body paper, is tiled after taking-up,
A certain amount of starch emulsion is equably coated in the surface layer of body paper and the surface of bottom using top sizing stick, after being then glued
Body paper drying.
Table 1 is the specific experiment data of sample and each comparative example, wherein pH value is the pH value of the slurry after sizing, and side is seeped
Value is the value of 95 DEG C of hot water 10min.
As shown in table 1 below, sample 1 and comparative example 2 are using the surface layer slurry of ASA lotion preparation and the pH value of bottom layer slurry
PH value compared to the slurry being glued using rosin and aluminum sulfate is bigger, and is not gone out using the food card body paper of ASA lotion sizing
Existing macula lutea.That is, it is lower using the slurry acidity that ASA lotion is glued, environment can be effectively avoided during the drying process
Acidity height, which causes the ferrous element in drying cylinder to get rusty, causes paper contamination jaundice macula lutea occur.Moreover, using rosin and aluminum sulfate
It is not easy to be dehydrated during the drying process in surface layer and the food card body paper of bottom sizing preparation, this is because rosin increases slurry
Viscosity causes food card body paper before entering drying cylinder drying containing dilutional hyponatremia, so that humidity is larger in drying cylinder, and then extends paper
Drying time period, influence paper production efficiency.
The surface layer slurry and base pastes of sample 1 and comparative example 2 are all made of the sizing of ASA lotion, unlike, sample 1
Center stock is glued using rosin and aluminum sulfate, and 2 center core layer slurry of comparative example still uses ASA lotion to be glued, from the two
It is larger in the while infiltration value for seeping the food card body paper that data can be seen that the comparative example 2 being all glued using ASA lotion, i.e., it is water-fast
Property is poor, is not able to satisfy the water-fast demand of food card body paper.
The specific experiment data of 1 sample of table and each comparative example
The foregoing is merely presently filed embodiments, are not intended to limit the scope of the patents of the application, all to utilize this
Equivalent structure or equivalent flow shift made by application specification and accompanying drawing content, it is relevant to be applied directly or indirectly in other
Technical field similarly includes in the scope of patent protection of the application.
Claims (9)
1. a kind of preparation method of food card body paper, which comprises the following steps:
Surface layer slurry, base pastes and center stock are prepared respectively；
First ASA sizing is carried out to the surface layer slurry, the 2nd ASA sizing is carried out to the base pastes；
The sizing of rosin acidity is carried out to the center stock；
The surface layer slurry, the center stock and the base pastes are subjected to combined processing, form original paper, wherein
The bottom that the surface layer and the base pastes that the surface layer slurry is formed are formed is located at the center stock and is formed by core
The opposite two sides of layer；
Drying and processing is carried out to the original paper, forms the body paper.
2. preparation method according to claim 1, it is characterised in that: carried out at drying described to the original paper
Reason, form the body paper step includes: later
Top sizing is carried out to the body paper.
3. preparation method according to claim 2, it is characterised in that: described the step of carrying out top sizing to the body paper
Include:
The surface layer to the body paper and bottom are using starch emulsion progress top sizing respectively.
4. preparation method according to claim 1, it is characterised in that: described by the surface layer slurry, the center stock
And the base pastes carry out combined processing, the step of forming original paper includes:
The plain boiled water of the center stock is individually recycled, to recycle the remainder of the center stock.
5. preparation method according to claim 1, it is characterised in that: the ASA lotion that the first ASA sizing uses is at least
By positive starch and ASA stoste with the ratio of 2:1~4:1 carries out emulsification mixing and is formed, wherein first ASA sizing makes
The dosage of ASA lotion is 1.2~2Kg/T, and wherein T indicates the quality of the surface layer slurry.
6. preparation method according to claim 1, it is characterised in that: the ASA lotion that the 2nd ASA sizing uses is at least
By positive starch and ASA stoste with the ratio of 2:1~4:1 carries out emulsification mixing and is formed, wherein second ASA sizing makes
The dosage of ASA lotion is 1.2~2Kg/T, and wherein T indicates the quality of the base pastes.
7. preparation method according to claim 1, it is characterised in that: the sizing agent that the rosin acidity sizing uses is at least
It is mixed by rosin and aluminum sulfate, the mass ratio of the aluminum sulfate and the rosin is 0.5:1~1.5:1.
8. preparation method according to claim 7, it is characterised in that: the dosage of the aluminum sulfate is 10~20Kg/T, and/
Or 10~20Kg/T of dosage of the rosin, wherein T indicates the quality of the center stock.
9. a kind of food card body paper, it is characterised in that: the body paper is by preparation method according to claim 1-8
It is prepared.
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| CN111188225A (en) * | 2020-01-06 | 2020-05-22 | 宁波亚洲浆纸业有限公司 | Core layer pulp for paper cup base paper, paper cup base paper and preparation method thereof |
| CN111235940A (en) * | 2020-01-14 | 2020-06-05 | 宁波亚洲浆纸业有限公司 | Preparation method of core layer slurry, base paper, paperboard and paper machine |
| CN113152147A (en) * | 2021-04-22 | 2021-07-23 | 叶子包装(美国)有限公司 | Environment-friendly straw paper, preparation method thereof and paper straw processing technology |
| CN115369675A (en) * | 2022-10-24 | 2022-11-22 | 山东博汇纸业股份有限公司 | Method for controlling yellow spots of paper cup base paper |
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