Preparation process for improving water absorption rate of kitchen paper

Abstract

The invention relates to the field of kitchen paper production, in particular to a preparation process for improving the water absorption rate of kitchen paper, and the preparation process comprises the steps of raw material selection, pulping and purification and printing, and the raw materials adopt plant long fibers, bamboo fibers, bagasse fibers and various long fiber materials, and are matched with ground jute core particles to form an integral structure raw material of the paper. According to the invention, a plurality of long fiber raw materials are added into the paper pulp, so that the overall strength of the paper is improved, certain elasticity of fibers can be reserved, the porosity among the fibers in the wrinkling process is improved, and meanwhile, beating enzyme and jute core particles are added for multiple times, so that the swelling performance of the fibers is improved, and the water absorption of the product is improved; extra fine limit in the paper pulp is recycled and removed, so that the content of fine fiber is reduced, the porosity of the product is improved, the water absorption of the paper finished product is further improved, and the absorption effect and the paper strength are ensured.

Description

Technical Field

[0001] The invention relates to the technical field of kitchen paper production, and in particular to a preparation process for improving the water absorption rate of kitchen paper. Background Art

[0002] Kitchen paper, which is paper towel specially used in the kitchen, has better water and oil absorption than ordinary paper towels, is not easy to be damaged, has a higher safety factor and will not drop paper scraps, thus avoiding the risk of secondary contamination of food.

[0003] As kitchen paper, water absorption is also a relatively important characteristic. The water absorption performance of traditional kitchen paper is average, and it often takes several sheets of paper towels to wipe off water stains on the surface of items, which cannot meet the use needs, resulting in poor cleaning effects, improper food handling, paper waste and other problems. Therefore, a preparation process for improving the water absorption rate of kitchen paper is urgently needed. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a preparation process for improving the water absorption rate of kitchen paper.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A preparation process for improving the water absorption rate of kitchen paper comprises the following steps:

[0007] S1. Raw material selection;

[0008] a. According to the mass percentage, take 100-120 parts of plant long fiber, 30-40 parts of bamboo fiber, 30-50 parts of anionic starch, 20-30 parts of bagasse fiber, 10-20 parts of calcium carbonate, 10-30 parts of raw water, and 5-7 parts of polyurethane resin;

[0009] S2, pulping and purification;

[0010] a. The raw materials in S1 are sent to the pulping equipment after being treated, and the corresponding chemical additives are continuously and evenly added during the pulping process, which are recorded by weight, including 3-5 parts of polyethyleneimine, 3-5 parts of acrylic copolymer, 2-4 parts of softener, 2-4 parts of wet strength agent, 1-3 parts of sizing agent, and 5-10 parts of pulping enzyme;

[0011] b. Add 10-16 parts of beating enzyme to the pulp prepared in S2-a again, and perform pulping treatment on the pulp for 20-40 minutes at a pulping efficiency of 55-75%;

[0012] c. Take the jute core mixture and grind it into 60-80 mesh particles by a grinder, then mix the ground raw material with Ca(OH)2 solution, wherein the mixing ratio of the particle raw material to the Ca(OH)2 solution is (8-10):1 by mass ratio, and then take out the particles after standing the mixture for 5-8 hours to obtain jute core particles;

[0013] d. Add the raw material prepared in S2-c to the raw material in S2-a, and refine at a constant temperature of 33-35°C for 10-15 minutes;

[0014] e. Vibrating the raw material obtained in S2-d for 4-6 hours, and then adding the pulp to a microfilter for filtering to treat fine fibers;

[0015] S3, printed.

[0016] Preferably, the anionic starch needs to be stirred and mixed with raw material water of 2-2.3 times its mass for 10-15 minutes before participating in the pulping process of the plant-limited raw material.

[0017] Preferably, the jute core mixture is taken out from the Ca(OH)2 solution and then dried in a vacuum dryer at 100-120°C for 2-2.6 hours before being added to S2-a.

[0018] Preferably, during the addition of the sizing agent, the amount of the sizing agent added to the slurry is in a mass ratio of (0.03-0.06):1, and the concentration of the slurry is controlled at 4.0-6.0%.

[0019] Preferably, the wet strength agent accounts for 1.25-1.35% by weight of the total slurry, and the softener accounts for 0.25-0.35% by weight of the total slurry.

[0020] Preferably, the jute core mixture has a content of 10-12 wt%, and raw water is added to adjust the concentration of the jute core mixture to 2.5-3.5% of the slurry.

[0021] Preferably, in S2, during the beating process of the pulp raw material, the pulp is continuously stirred at 75-85°C for 5-7h, and during the continuous beating process, beating enzyme should be continuously added three times, and the amount of beating enzyme added each time is 0.2:0.3:0.5 by mass ratio.

[0022] Preferably, the sizing agent is any one of anionic dispersed rosin, cationic dispersed rosin, modified petroleum resin, and modified alkyd resin.

[0023] Preferably, during the refining process, jute core particles are preferentially added to mix with a normal mass of pulp raw material, and after the first hour of mixing, the remaining pulp raw material is continuously added.

[0024] The beneficial effects of the present invention are:

[0025] In the present invention, several kinds of long fiber raw materials are added to the pulp to increase the overall strength of the paper, and a certain elasticity of the fiber can be retained, thereby increasing the porosity between the fibers during the wrinkling process. At the same time, beating enzymes and jute core particles are added multiple times to increase the swelling performance of the fiber and the water absorption of the product, and the fine particles in the pulp are additionally recovered and removed to reduce the fine fiber content, increase the porosity of the product, and further increase the water absorption of the finished paper, thereby ensuring the absorption effect and paper strength. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0027] Example 1

[0028] A preparation process for improving the water absorption rate of kitchen paper comprises the following steps:

[0029] S1. Raw material selection;

[0030] a. According to the mass percentage, take 100 parts of plant long fiber, 30 parts of bamboo fiber, 30 parts of anionic starch, 20 parts of bagasse fiber, 10 parts of calcium carbonate, 10 parts of raw water, and 5 parts of polyurethane resin;

[0031] S2, pulping and purification;

[0032] a. The raw materials in S1 are sent into the pulping equipment after being treated, and the corresponding chemical additives are continuously and evenly added during the pulping process, which are recorded by weight, including 3 parts of polyethyleneimine, 3 parts of acrylic copolymer, 2 parts of softener, 2 parts of wet strength agent, 1 part of sizing agent, and 5 parts of pulping enzyme;

[0033] b. Add 10 parts of beating enzyme to the pulp prepared in S2-a again, and refine the pulp for 20 minutes at a refining efficiency of 55-75%;

[0034] c. Taking the jute core mixture, and crushing the raw material into 60 mesh particles by a crusher, and then mixing the crushed raw material with the Ca(OH)2 solution, wherein the mixing ratio of the particle raw material to the Ca(OH)2 solution is 8:1 by mass ratio, and then taking out the particles after standing the mixture for 5 hours, thereby obtaining jute core particles;

[0035] d. Add the raw material prepared in S2-c to the raw material in S2-a, and refine at a constant temperature of 33°C for 10 minutes;

[0036] e. The raw material prepared in S2-d is subjected to vibration treatment for 4 hours, and then the pulp is added to a microfilter for filtration treatment to treat fine fibers;

[0037] S3, printed.

[0038] Furthermore, before the anionic starch is used in the pulping process of the plant-limited raw materials, it needs to be stirred and mixed with raw water twice its mass for 10 minutes.

[0039] Furthermore, the jute core mixture is taken out from the Ca(OH)2 solution and dried in a vacuum dryer at 100°C for 2 h before being added to S2-a.

[0040] Furthermore, during the addition of the sizing agent, the amount of the sizing agent added to the slurry is in a mass ratio of 0.03:1, and the concentration of the slurry is controlled at 4.0%.

[0041] Furthermore, the wet strength agent accounts for 1.25% by weight of the total slurry, and the softener accounts for 0.25% by weight of the total slurry.

[0042] Further, the jute core mixture has a content of 10 wt %, and raw water is added to adjust the concentration of the jute core mixture to 2.5 wt %.

[0043] Furthermore, in S2, during the beating process of the pulp raw material, the pulp is continuously stirred at 75°C for 5 hours. During the continuous beating process, beating enzyme should be continuously added three times, and the amount of beating enzyme added each time is 0.2:0.3:0.5 by mass ratio.

[0044] Example 2

[0045] A preparation process for improving the water absorption rate of kitchen paper comprises the following steps:

[0046] S1. Raw material selection;

[0047] a. According to the mass percentage, take 110 parts of plant long fiber, 35 parts of bamboo fiber, 40 parts of anionic starch, 25 parts of bagasse fiber, 15 parts of calcium carbonate, 20 parts of raw water, and 6 parts of polyurethane resin;

[0048] S2, pulping and purification;

[0049] a. The raw materials in S1 are sent into the pulping equipment after being treated, and the corresponding chemical additives are continuously and evenly added during the pulping process, which are recorded by weight, including 4 parts of polyethyleneimine, 4 parts of acrylic copolymer, 3 parts of softener, 3 parts of wet strength agent, 2 parts of sizing agent, and 7 parts of pulping enzyme;

[0050] b. 13 parts of beating enzyme were added to the pulp prepared in S2-a again, and the pulp was refined for 30 minutes at a refining efficiency of 65%;

[0051] c. Take the jute core mixture and grind it into 70 mesh particles through a grinder. Then mix the ground raw material with Ca(OH)2 solution. The mass ratio of the granular raw material to the Ca(OH)2 solution is 9:1. Then, let the mixture stand for 6.5 hours and then take out the particles to obtain jute core particles.

[0052] d. Add the raw material prepared in S2-c to the raw material in S2-a, and refine at a constant temperature of 34°C for 13 minutes;

[0053] e. The raw material prepared in S2-d is subjected to vibration treatment for 5 hours, and then the pulp is added to a microfilter for filtration treatment to treat fine fibers;

[0054] S3, printed.

[0055] Furthermore, before the anionic starch is used in the pulping process of the plant-limited raw materials, it needs to be stirred and mixed with 2.1 times the mass of raw water for 12 minutes.

[0056] Furthermore, the jute core mixture is taken out from the Ca(OH)2 solution and dried in a vacuum dryer at 110°C for 2.3 h before being added to S2-a.

[0057] Furthermore, during the addition of the sizing agent, the amount of the sizing agent added to the slurry is in a mass ratio of (0.03-0.06):1, and the concentration of the slurry is controlled at 5.0%.

[0058] Furthermore, the wet strength agent accounts for 1.30% by weight of the total slurry, and the softener accounts for 0.3wt% by weight of the total slurry.

[0059] Further, the jute core mixture has a content of 11 wt %, and raw water is added to adjust the concentration of the jute core mixture to 3% of the slurry.

[0060] Furthermore, in S2, during the beating process of the pulp raw material, the pulp is continuously stirred at 80°C for 6 hours. During the continuous beating process, the beating enzyme should be continuously added three times, and the amount of the beating enzyme added each time is 0.2:0.3:0.5 by mass ratio.

[0061] Example 3

[0062] A preparation process for improving the water absorption rate of kitchen paper comprises the following steps:

[0063] S1. Raw material selection;

[0064] a. According to the mass percentage, take 120 parts of plant long fiber, 40 parts of bamboo fiber, 50 parts of anionic starch, 30 parts of bagasse fiber, 20 parts of calcium carbonate, 30 parts of raw water, and 7 parts of polyurethane resin;

[0065] S2, pulping and purification;

[0066] a. The raw materials in S1 are sent into the pulping equipment after being treated, and the corresponding chemical additives are continuously and evenly added during the pulping process, which are recorded by weight, including 5 parts of polyethyleneimine, 5 parts of acrylic copolymer, 4 parts of softener, 4 parts of wet strength agent, 3 parts of sizing agent, and 10 parts of pulping enzyme;

[0067] b. 16 portions of beating enzyme were added to the pulp prepared in S2-a again, and the pulp was refined for 40 minutes at a refining efficiency of 75%;

[0068] c. Take the jute core mixture and grind it into 60-80 mesh particles through a grinder, then mix the ground raw material with Ca(OH)2 solution in a mass ratio of 10:1, and then let the mixture stand for 8 hours before taking out the particles to obtain jute core particles.

[0069] d. Add the raw material prepared in S2-c to the raw material in S2-a, and refine at a constant temperature of 35°C for 15 minutes;

[0070] e. The raw material prepared in S2-d is subjected to vibration treatment for 6 hours, and then the pulp is added to a microfilter for filtration treatment to treat fine fibers;

[0071] S3, printed.

[0072] Furthermore, before the anionic starch is used in the pulping process of the plant-limited raw materials, it needs to be stirred and mixed with 2.3 times the mass of raw water for 15 minutes.

[0073] Furthermore, the jute core mixture is taken out from the Ca(OH)2 solution and dried in a vacuum dryer at 120°C for 2.62.6 h before being added to S2-a.

[0074] Furthermore, during the addition of the sizing agent, the amount of the sizing agent added to the slurry is in a mass ratio of 0.06:1, and the concentration of the slurry is controlled at 6.0%.

[0075] Furthermore, the wet strength agent accounts for 1.35% by weight of the total slurry, and the softener accounts for 0.35% by weight of the total slurry.

[0076] Further, the jute core mixture has a content of 12 wt %, and raw water is added to adjust the concentration of the jute core mixture to 3.5 wt %.

[0077] Furthermore, in S2, during the beating process of the pulp raw material, the pulp is continuously stirred at 85° C. for 7 hours. During the continuous beating process, the beating enzyme should be continuously added three times, and the amount of the beating enzyme added each time is 0.2:0.3:0.5 by mass ratio.

[0078] Furthermore, the sizing agent is any one of anionic dispersed rosin, cationic dispersed rosin, modified petroleum resin, and modified alkyd resin.

[0079] Furthermore, during the refining process, jute core particles are preferentially added to mix with a normal mass of pulp raw material, and after the first hour of mixing, the remaining pulp raw material is continuously added.

[0080] In the present embodiment, plant long fibers, bamboo fibers, anionic starch, bagasse fibers, calcium carbonate, raw water, and polyurethane resin are used as pulp raw materials, wherein long fibers such as plant long fibers, bamboo fibers, and bagasse fibers can effectively improve the bonding effect between papers, and by increasing the amount of long fibers, a certain elasticity of the fibers is retained, and the porosity between the fibers during the wrinkling process is increased, and then polyethyleneimine, acrylic copolymers, softeners, wet strength agents, sizing agents, and beating enzymes are continuously and evenly added as chemical raw materials during the beating process, and continuously stirred to increase the mixing effect, wherein the beating enzyme is added in batches multiple times to improve the swelling properties of the fibers and improve the water absorption of the product.

[0081] At the same time, a jute core mixture is used and the raw material is crushed by a crusher, and then the crushed raw material is mixed with a Ca(OH)2 solution and allowed to stand to obtain jute core particles.

[0082] Then, during the refining process of the raw materials, the refining efficiency is appropriately reduced to increase the production of short fibers in the pulp, and the short fibers are separated through equipment to further increase the content of long fibers in the pulp, increase the porosity of the product, and improve the water absorption of the product.

[0083] In the present invention, several kinds of long fiber raw materials are added to the pulp to increase the overall strength of the paper, and a certain elasticity of the fiber can be retained, thereby increasing the porosity between the fibers during the wrinkling process. At the same time, beating enzymes and jute core particles are added multiple times to increase the swelling performance of the fiber and the water absorption of the product, and the fine particles in the pulp are additionally recovered and removed to reduce the fine fiber content, increase the porosity of the product, and further increase the water absorption of the finished paper, thereby ensuring the absorption effect and paper strength.

[0084] Among them, paper on the market is compared with the paper of the present invention, specifically kitchen paper A, kitchen paper B, kitchen paper C, kitchen paper D, and paper E containing jute core particles, wherein kitchen paper A, kitchen paper B, kitchen paper C, and kitchen paper D are different kitchen papers on the market, and paper E containing jute core particles is made from the pulp in this application document.

[0085]

[0086] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A preparation process for improving the water absorption rate of kitchen paper, characterized in that: The following steps are involved: S1. Raw material selection; a. According to the mass percentage, take 100-120 parts of plant long fiber, 30-40 parts of bamboo fiber, 30-50 parts of anionic starch, 20-30 parts of bagasse fiber, 10-20 parts of calcium carbonate, 10-30 parts of raw water, and 5-7 parts of polyurethane resin; S2, pulping and purification; a. The raw materials in S1 are sent to the pulping equipment after being treated, and the corresponding chemical additives are continuously and evenly added during the pulping process, which are recorded by weight, including 3-5 parts of polyethyleneimine, 3-5 parts of acrylic copolymer, 2-4 parts of softener, 2-4 parts of wet strength agent, 1-3 parts of sizing agent, and 5-10 parts of pulping enzyme; b. Add 10-16 parts of beating enzyme to the pulp prepared in S2-a again, and perform pulping treatment on the pulp for 20-40 minutes at a pulping efficiency of 55-75%; c. Take the jute core mixture and grind it into 60-80 mesh particles by a grinder, then mix the ground raw material with Ca(OH)2 solution, wherein the mixing ratio of the particle raw material to the Ca(OH)2 solution is (8-10):1 by mass ratio, and then take out the particles after the mixture is allowed to stand for 5-8 hours to obtain jute core particles; d. Add the raw material prepared in S2-c to the raw material in S2-a, and refine at a constant temperature of 33-35°C for 10-15 minutes; e. Vibrating the raw material obtained in S2-d for 4-6 hours, and then adding the pulp to a microfilter for filtering to treat fine fibers; S3, printed.

2. A preparation process for improving the water absorption rate of kitchen paper according to claim 1, characterized in that: Before the anionic starch is used in the pulping process of the plant-limited raw material, it needs to be stirred and mixed with raw material water of 2-2.3 times its mass for 10-15 minutes.

3. A preparation process for improving the water absorption rate of kitchen paper according to claim 1, characterized in that: After the jute core mixture is taken out from the Ca(OH)2 solution, it needs to be dried in a vacuum dryer at a temperature of 100-120°C for 2-2.6 hours and then added to S2-a.

4. A preparation process for improving the water absorption rate of kitchen paper according to claim 1, characterized in that: During the addition of the sizing agent, the amount of the sizing agent added to the slurry is in a mass ratio of (0.03-0.06):1, and the concentration of the slurry is controlled at 4.0-6.0%.

5. The preparation process for improving the water absorption rate of kitchen paper according to claim 1, characterized in that: The wet strength agent accounts for 1.25-1.35% of the total slurry mass, and the softener accounts for 0.25-0.35wt% of the total slurry mass.

6. A preparation process for improving the water absorption rate of kitchen paper according to claim 1, characterized in that: The jute core mixture has a content of 10-12 wt %, and raw water is added to adjust the concentration of the jute core mixture to 2.5-3.5 wt %.

7. A preparation process for improving the water absorption rate of kitchen paper according to claim 1, characterized in that: In S2, during the beating process of the pulp raw material, the pulp is continuously stirred at 75-85°C for 5-7h. During the continuous beating process, beating enzyme should be continuously added three times, and the amount of beating enzyme added each time is 0.2:0.3:0.5 by mass ratio.

8. The preparation process for improving the water absorption rate of kitchen paper according to claim 1, characterized in that: The sizing agent is specifically any one of anionic dispersed rosin, cationic dispersed rosin, modified petroleum resin, and modified alkyd resin.

9. A preparation process for improving the water absorption rate of kitchen paper according to claim 1, characterized in that: During the refining process, jute core particles are preferentially added to mix with a normal mass of pulp raw material, and after the first hour of mixing, the remaining pulp raw material is continuously added.

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