Production process for preparing high-strength corrugated packing paper by using mineral fibers
阅读说明：本技术 一种利用矿物纤维制备高强瓦楞包装纸的生产工艺 (Production process for preparing high-strength corrugated packing paper by using mineral fibers ) 是由 章丽丽 王梅 于 2020-07-03 设计创作，主要内容包括：本发明公开了一种利用矿物纤维制备高强瓦楞包装纸的生产工艺,包括以下步骤：制备料浆,将混合矿物纤维原料与水混合,制备纤维浆料；活化矿物纤维,将纤维浆料通过研磨机进行研磨,使矿物纤维表面被活化；添加改性剂,向被活化后的纤维浆料中添加亲水性高分子材料进行充分混合,然后继续加入交联剂进行充分混合,最后再加入引发剂进行充分混,得到混合浆料；添加植物纤维；成型；本发明的利用矿物纤维制备高强瓦楞包装纸的生产工艺,大量采用矿物纤维代替植物纤维,避免了大量树木被砍伐,节能环保。且矿物纤维制备的瓦楞纸具有更好的防水、防潮、防火能力,使得瓦楞纸应用领域更广。(The invention discloses a production process for preparing high-strength corrugated packing paper by using mineral fibers, which comprises the following steps: preparing slurry, mixing the mixed mineral fiber raw material with water to prepare fiber slurry; activating mineral fibers, namely grinding the fiber slurry by a grinder so as to activate the surfaces of the mineral fibers; adding a modifier, adding a hydrophilic high polymer material into the activated fiber slurry for fully mixing, then continuously adding a cross-linking agent for fully mixing, and finally adding an initiator for fully mixing to obtain mixed slurry; adding plant fiber; molding; according to the production process for preparing the high-strength corrugated packing paper by using the mineral fibers, a large amount of mineral fibers are adopted to replace plant fibers, so that a large amount of trees are prevented from being felled, and the production process is energy-saving and environment-friendly. And the corrugated paper prepared by the mineral fibers has better waterproof, moistureproof and fireproof capabilities, so that the corrugated paper has wider application field.)
1. A production process for preparing high-strength corrugated packing paper by using mineral fibers is characterized by comprising the following steps:
(1) preparing slurry, namely mixing a mixed mineral fiber raw material with water to prepare a fiber slurry, wherein the concentration of the mineral fiber slurry is not more than 1%;
(2) activating mineral fibers, namely grinding the fiber slurry by a grinder so as to activate the surfaces of the mineral fibers;
(3) adding a modifier, adding a hydrophilic high polymer material into the activated fiber slurry for fully mixing, then continuously adding a cross-linking agent for fully mixing, and finally adding an initiator for fully mixing to obtain mixed slurry;
(4) adding plant fibers, adding the plant fibers into the mixed slurry obtained in the step (3), and fully mixing to obtain mixed fiber slurry;
(5) and (3) molding, namely molding the mixed fiber slurry into wet paper by using a molding machine, then extruding moisture on the wet paper by using a press roll to obtain a paper semi-finished product, finally cutting the paper semi-finished product by using a cutting mechanism, collecting the paper semi-finished product to be stacked, and drying at a low temperature.
2. The production process for preparing the high-strength corrugated packing paper by using the mineral fibers as claimed in claim 1, wherein the mixed mineral fiber raw material is a mixture of heavy calcium carbonate fibers, light calcium carbonate fibers, fly ash fibers, talcum powder fibers, glass fibers and silica fibers.
3. The process for producing high-strength corrugated packing paper using mineral fibers as claimed in claim 1, wherein the grinding machine comprises two opposite grinding disks, and the grinding surfaces of the two grinding disks are both provided with a non-smooth plane.
4. The production process for preparing the high-strength corrugated packing paper by using the mineral fibers as claimed in claim 1, wherein the hydrophilic polymer material is one or a mixture of chitosan, polyvinyl alcohol, carboxymethyl starch, sodium alginate, guar gum and artemisia desertorum gum.
5. The production process for preparing the high-strength corrugated packing paper by using the mineral fibers as claimed in claim 1, wherein the cross-linking agent is one or a mixture of N, N-methylene bisacrylamide, ethylene glycol bisacrylate, 1, 3-propylene glycol bisacrylate, epichlorohydrin and glutaraldehyde.
6. The production process for preparing high-strength corrugated packing paper by using mineral fibers as claimed in claim 1, wherein the initiator is one of ammonium sulfate, potassium persulfate and sodium persulfate.
7. The production process for preparing the high-strength corrugated packing paper by using the mineral fibers as claimed in claim 1, wherein the forming machine comprises a charging barrel and a forming belt arranged at the rear part of the charging barrel, a slurry outlet is arranged at the bottom of the charging barrel, a slurry distribution groove which is adapted to the width of the corrugated paper is arranged on the slurry outlet, the forming belt is a non-woven fabric conveying mesh belt tensioned by two driving rollers, and one end of the non-woven fabric conveying mesh belt is arranged at the lower part of the slurry distribution groove; a stirring mechanism is arranged in the charging barrel;
the compression roller comprises at least two stages of compression roller sets, each compression roller set comprises two roller shafts which are respectively arranged at the upper part and the lower part of the conveying surface of the non-woven fabric conveying mesh belt, and the two roller shafts are respectively connected with a transmission mechanism and a lifting mechanism;
the non-woven fabric conveying mesh belt is provided with a second conveying belt far away from the end of the slurry distributing groove, and the cutting mechanism is arranged at the upper part of the second conveying belt; and collecting the cut paper semi-finished products far away from the non-woven fabric conveying net belt end by the second conveying belt, and stacking the paper semi-finished products.
Technical Field
The invention belongs to the field of corrugated paper production, and particularly relates to a production process for preparing high-strength corrugated packing paper by using mineral fibers.
Background
Corrugated paper is a plate-shaped object formed by bonding corrugated paper of corrugated shapes formed by processing of liner paper and corrugated rollers, generally divided into single corrugated paper boards and double corrugated paper boards, and divided into the following two types according to the size of the corrugated paper: A. b, C, E, F five types. The corrugated paper has the advantages of low cost, light weight, easy processing, high strength, excellent printing adaptability, convenient storage and transportation and the like, is widely used as the package of food or digital products, is relatively environment-friendly and is widely used.
With the development of science and technology, the logistics industry develops rapidly. Corrugated paper is applied to more packaging fields, and the consumption of the corrugated paper is higher. Therefore, in the prior art, better requirements are put on corrugated paper, such as lower cost, more environmental protection, higher strength and hardness of the corrugated paper, and better waterproof and fireproof effects of the corrugated paper. In the prior art, corrugated paper is mostly made of plant fibers, so that a large number of trees are felled, and the environment is damaged.
Disclosure of Invention
The invention aims to provide a production process for preparing high-strength corrugated packing paper by using mineral fibers, which greatly adopts the mineral fibers to replace plant fibers, avoids cutting down a large number of trees, and is energy-saving and environment-friendly. And the corrugated paper prepared by the mineral fibers has better waterproof, moistureproof and fireproof capabilities, so that the corrugated paper has wider application field.
The invention relates to a production process for preparing high-strength corrugated packing paper by using mineral fibers, which comprises the following steps:
(1) preparing slurry, namely mixing a mixed mineral fiber raw material with water to prepare a fiber slurry, wherein the concentration of the mineral fiber slurry is not more than 1%;
(2) activating mineral fibers, namely grinding the fiber slurry by a grinder so as to activate the surfaces of the mineral fibers;
(3) adding a modifier, adding a hydrophilic high polymer material into the activated fiber slurry for fully mixing, then continuously adding a cross-linking agent for fully mixing, and finally adding an initiator for fully mixing to obtain mixed slurry;
(4) adding plant fibers, adding the plant fibers into the mixed slurry obtained in the step (3), and fully mixing to obtain mixed fiber slurry;
(5) and (3) molding, namely molding the mixed fiber slurry into wet paper by using a molding machine, then extruding moisture on the wet paper by using a press roll to obtain a paper semi-finished product, finally cutting the paper semi-finished product by using a cutting mechanism, collecting the paper semi-finished product to be stacked, and drying at a low temperature.
Preferably, the mixed mineral fiber raw material is a mixture of heavy calcium carbonate fibers, light calcium carbonate fibers, fly ash fibers, talcum powder fibers, glass fibers and silica fibers.
Preferably, the grinding machine comprises two opposing grinding discs, the grinding faces of both of which are provided as non-smooth flat faces.
Preferably, the hydrophilic polymer material is one or a mixture of chitosan, polyvinyl alcohol, carboxymethyl starch, sodium alginate, guar gum and artemisia glue.
Preferably, the crosslinking agent is one or a mixture of more of N, N-methylene bisacrylamide, ethylene glycol diacrylate, 1, 3-propylene glycol diacrylate, epichlorohydrin and glutaraldehyde.
Preferably, the initiator is one of ammonium sulfate, potassium persulfate and sodium persulfate.
Preferably, the forming machine comprises a charging barrel and a forming belt arranged at the rear part of the charging barrel, a slurry outlet is arranged at the bottom of the charging barrel, a slurry distribution groove which is adaptive to the width of the corrugated paper is arranged on the slurry outlet, the forming belt is a non-woven fabric conveying mesh belt tensioned by two driving rollers, and one end of the non-woven fabric conveying mesh belt is arranged at the lower part of the slurry distribution groove; a stirring mechanism is arranged in the charging barrel;
the compression roller comprises at least two stages of compression roller sets, each compression roller set comprises two roller shafts which are respectively arranged at the upper part and the lower part of the conveying surface of the non-woven fabric conveying mesh belt, and the two roller shafts are respectively connected with a transmission mechanism and a lifting mechanism;
the non-woven fabric conveying mesh belt is provided with a second conveying belt far away from the end of the slurry distributing groove, and the cutting mechanism is arranged at the upper part of the second conveying belt; and collecting the cut paper semi-finished products far away from the non-woven fabric conveying net belt end by the second conveying belt, and stacking the paper semi-finished products.
The production process for preparing the high-strength corrugated packing paper by using the mineral fiber has the beneficial effects that:
1. the corrugated paper is prepared by utilizing mineral fibers, so that the corrugated paper has better waterproof, moistureproof and protective capabilities, and the application field of the corrugated paper is wider.
2. The surface of the mineral fiber is ground and activated, so that the mineral fiber and various modified materials are well connected, and the thickness and the hardness of the formed corrugated paper are ensured.
3. The plant fiber is adopted, so that the toughness of the corrugated paper is improved, the performance of the corrugated paper is improved, and the corrugated paper is prevented from being broken.
Drawings
FIG. 1 is a schematic diagram of a molding machine according to the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
The invention relates to a production process for preparing high-strength corrugated packing paper by using mineral fibers, which comprises the following steps:
step one, preparing slurry: the mixed mineral fiber raw materials of heavy calcium carbonate fiber, light calcium carbonate fiber, fly ash fiber, talcum powder fiber, glass fiber and silicon dioxide fiber are fully mixed with water to prepare fiber slurry, and the concentration of the mineral fiber slurry is not more than 1%. The mineral fiber slurry has low concentration, is convenient for fully mixing the mineral fibers with water, is convenient for uniformly dispersing the mineral fibers in the water, and is combined with a modifier and plant fibers which are added later. Meanwhile, the mixed fiber pulp is conveniently and uniformly distributed on the non-woven fabric conveying mesh belt in the forming process, and the formed corrugated paper is ensured to be consistent in thickness.
In the technical scheme of the invention, the corrugated paper is prepared by adopting the mineral fibers, so that the corrugated paper has good waterproof, moistureproof and fireproof effects, and the application field of the corrugated paper is wider. And the mineral fiber is adopted to the corrugated paper, so that the use of plant fiber is reduced, and forest and environment are protected.
Secondly, activating mineral fibers: the fiber slurry is ground by a grinder to activate the surface of the mineral fibers. The grinder comprises two opposite grinding discs, and the grinding surfaces of the two grinding discs are both provided with non-smooth planes. The surface of the fiber is activated by grinding, and the surface hydroxyl-like groups are activated, so that the modified material is firmly connected with the mineral fiber. And the mineral fibers are activated in the state of fiber slurry, so that the cutting of the mineral fibers is effectively avoided.
Step three, adding a modifier: first, a hydrophilic polymer material is added to the activated fiber slurry and sufficiently mixed. The hydrophilic polymer material is at least one or a mixture of chitosan, polyvinyl alcohol, carboxymethyl starch, sodium alginate, guar gum and artemisia glue. The hydrophilic polymer material is combined and linked with the surface of the mineral fiber, so that the mineral fiber has hydrophilicity and can be well dispersed in water. Then, the crosslinking agent is continuously added and fully mixed. The cross-linking agent is one or a mixture of more of N, N-methylene bisacrylamide, ethylene glycol diacrylate, 1, 3-propylene glycol diacrylate, epichlorohydrin and glutaraldehyde. The cross-linking polymerization is utilized to form gel on the surface of the mineral fiber, so that the mineral fiber is changed into gel which can be dispersed in water, and the flexibility, the dispersibility and the bonding property with the plant fiber of the mineral fiber are improved. And finally, adding an initiator for full mixing to obtain mixed slurry. The initiator is one of ammonium sulfate, potassium persulfate and sodium persulfate.
Fourthly, adding plant fibers: and (4) adding plant fibers into the mixed slurry obtained in the step (3), and fully mixing to obtain mixed fiber slurry. The plant fiber is adopted, so that the toughness of the corrugated paper is improved, the performance of the corrugated paper is improved, and the corrugated paper is prevented from being broken.
And 5, forming: the method comprises the steps of firstly, forming wet paper from the mixed fiber pulp by using a forming machine, then, squeezing water on the wet paper by using a press roll to obtain a paper semi-finished product, finally, cutting the paper semi-finished product by using a cutting mechanism, collecting the paper semi-finished product into a stacked shape, and drying at a low temperature.
Referring to fig. 1, the molding machine in the present invention comprises a barrel 1 and a molding belt disposed at the rear of the barrel 1. The bottom of the charging barrel 1 is provided with a slurry outlet, and a slurry distribution groove 7 which is adaptive to the width of the corrugated paper is arranged on the slurry outlet. The forming belt is a non-woven fabric conveying net belt 3 tensioned by two driving rollers, and one end of the non-woven fabric conveying net belt 3 is arranged at the lower part of the pulp distribution groove 7; a stirring mechanism 2 is arranged in the charging barrel 1. The press roll comprises at least two stages of press roll sets 6, each press roll set 6 comprises two
It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by one of ordinary skill in the art and related arts based on the embodiments of the present invention without any creative effort, shall fall within the protection scope of the present invention. Structures, devices, and methods of operation not specifically described or illustrated herein are generally practiced in the art without specific recitation or limitation.