CN113981737A - Production process of soft tissue - Google Patents
Production process of soft tissue Download PDFInfo
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- CN113981737A CN113981737A CN202010729602.6A CN202010729602A CN113981737A CN 113981737 A CN113981737 A CN 113981737A CN 202010729602 A CN202010729602 A CN 202010729602A CN 113981737 A CN113981737 A CN 113981737A
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- paper towel
- soft tissue
- chitosan
- coating liquid
- coating
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- 210000004872 soft tissue Anatomy 0.000 title claims abstract description 58
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 238000000576 coating method Methods 0.000 claims abstract description 117
- 239000011248 coating agent Substances 0.000 claims abstract description 116
- 239000007788 liquid Substances 0.000 claims abstract description 79
- 238000000034 method Methods 0.000 claims abstract description 28
- 210000001519 tissue Anatomy 0.000 claims abstract description 23
- 230000008569 process Effects 0.000 claims abstract description 19
- 238000003618 dip coating Methods 0.000 claims abstract description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 82
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 66
- 229920001661 Chitosan Polymers 0.000 claims description 61
- 239000002202 Polyethylene glycol Substances 0.000 claims description 49
- 229920001223 polyethylene glycol Polymers 0.000 claims description 49
- 238000003756 stirring Methods 0.000 claims description 48
- 239000000243 solution Substances 0.000 claims description 36
- KIUKXJAPPMFGSW-DNGZLQJQSA-N (2S,3S,4S,5R,6R)-6-[(2S,3R,4R,5S,6R)-3-Acetamido-2-[(2S,3S,4R,5R,6R)-6-[(2R,3R,4R,5S,6R)-3-acetamido-2,5-dihydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-2-carboxy-4,5-dihydroxyoxan-3-yl]oxy-5-hydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-3,4,5-trihydroxyoxane-2-carboxylic acid Chemical compound CC(=O)N[C@H]1[C@H](O)O[C@H](CO)[C@@H](O)[C@@H]1O[C@H]1[C@H](O)[C@@H](O)[C@H](O[C@H]2[C@@H]([C@@H](O[C@H]3[C@@H]([C@@H](O)[C@H](O)[C@H](O3)C(O)=O)O)[C@H](O)[C@@H](CO)O2)NC(C)=O)[C@@H](C(O)=O)O1 KIUKXJAPPMFGSW-DNGZLQJQSA-N 0.000 claims description 29
- 229920002674 hyaluronan Polymers 0.000 claims description 29
- 229960003160 hyaluronic acid Drugs 0.000 claims description 29
- 239000002002 slurry Substances 0.000 claims description 29
- 239000007864 aqueous solution Substances 0.000 claims description 27
- IDGUHHHQCWSQLU-UHFFFAOYSA-N ethanol;hydrate Chemical compound O.CCO IDGUHHHQCWSQLU-UHFFFAOYSA-N 0.000 claims description 24
- 239000002131 composite material Substances 0.000 claims description 22
- 238000003825 pressing Methods 0.000 claims description 20
- 238000002360 preparation method Methods 0.000 claims description 19
- 238000005096 rolling process Methods 0.000 claims description 18
- 238000013329 compounding Methods 0.000 claims description 10
- 241001122767 Theaceae Species 0.000 claims description 8
- 238000005098 hot rolling Methods 0.000 claims description 8
- 150000008442 polyphenolic compounds Chemical class 0.000 claims description 8
- 235000013824 polyphenols Nutrition 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 239000000843 powder Substances 0.000 abstract description 7
- 150000001875 compounds Chemical class 0.000 abstract description 4
- 230000007246 mechanism Effects 0.000 description 14
- 230000000694 effects Effects 0.000 description 6
- 230000032050 esterification Effects 0.000 description 6
- 238000005886 esterification reaction Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 4
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 230000001476 alcoholic effect Effects 0.000 description 2
- 230000000844 anti-bacterial effect Effects 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 241000588724 Escherichia coli Species 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 206010033128 Ovarian cancer Diseases 0.000 description 1
- 206010061535 Ovarian neoplasm Diseases 0.000 description 1
- 239000004902 Softening Agent Substances 0.000 description 1
- 241000191967 Staphylococcus aureus Species 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 201000006385 lung benign neoplasm Diseases 0.000 description 1
- 208000020816 lung neoplasm Diseases 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004383 yellowing Methods 0.000 description 1
Images
Classifications
-
- 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
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/22—Addition to the formed paper
- D21H23/32—Addition to the formed paper by contacting paper with an excess of material, e.g. from a reservoir or in a manner necessitating removal of applied excess material from the paper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
Abstract
The invention belongs to a soft tissue process, and particularly relates to a production process of a soft tissue. The invention solves the problem of serious powder dropping of the existing soft tissue, and the multi-roller dip coating method is utilized to soak the organic coating liquid into the tissue and compound the tissue to form the soft tissue with a multi-layer structure.
Description
Technical Field
The invention belongs to a soft tissue process, and particularly relates to a production process of soft tissue.
Background
In the production process of the soft tissue, in order to improve the softness of the tissue, the talcum powder is added into the slurry as a softening agent to form a coating liquid with softness, and the talcum powder is solidified in the tissue as solid particles through a coating process. In the using process, the soft tissue belongs to dry tissue, the powder dropping phenomenon is easy to occur, the particle pollution is caused, meanwhile, the talcum powder particles are proved to be the cause of the tumor of the ovary and the lung of a cancer patient, and are carcinogenic substances.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a production process of a soft tissue, which solves the problem of serious powder falling of the existing soft tissue, and the soft tissue with a multilayer structure is formed by soaking organic coating liquid into the tissue by a multi-roller dip coating method and compounding.
In order to achieve the technical purpose, the technical scheme of the invention is as follows:
a production process of a soft tissue takes chitosan-based slurry as coating liquid, and three-layer compounding is carried out by a multi-roll dip coating method to obtain the soft tissue with a three-layer composite structure.
The production steps of the soft tissue are as follows:
step 1, placing a first tissue, a second tissue and a third tissue on a material frame for standby;
step 2, penetrating the second paper towel into the coating liquid for 3-6s in a rolling coating mode, then attaching the first paper towel on the upper surface of the second paper towel, and pressing under the pressure of 0.3-0.5MPa to obtain the second paper towel with the upper surface compounded with the first paper towel;
step 3, immersing a second paper towel compounding the first paper towel in the coating liquid for 2-4s in a rolling coating mode, then attaching a third paper towel on the lower surface of the second paper towel, and pressing under the pressure of 0.3-0.5MPa to obtain a prefabricated soft paper towel;
and 4, carrying out hot rolling treatment at 105-115 ℃ and 3-5MPa on the prefabricated soft tissue, and rolling to obtain the soft tissue.
The mass formula of the chitosan-based slurry is as follows:
10-20 parts of polyethylene glycol, 5-8 parts of chitosan, 8-10 parts of hyaluronic acid and 50-90 parts of ethanol aqueous solution, wherein the volume concentration of ethanol in the ethanol aqueous solution is 20-40%, and the molecular weight of the polyethylene glycol is 200-500.
The preparation method of the chitosan-based slurry comprises the following steps:
step 1, adding hyaluronic acid into an ethanol water solution, and uniformly stirring at the speed of 400-;
step 2, sequentially adding polyethylene glycol and chitosan into the ethanol aqueous solution obtained in the step 1, and stirring at the speed of 800r/min at the temperature of 20-50 ℃ to obtain a coating liquid
Further, the chitosan-based slurry also contains 20-50 parts of glycerol.
The preparation method of the chitosan-based slurry comprises the following steps:
step 1, adding hyaluronic acid into an ethanol water solution, and uniformly stirring at the speed of 400-;
step 2, adding polyethylene glycol into glycerol, stirring uniformly at the speed of 300-500r/min, and then adding chitosan, and stirring uniformly;
and 3, slowly adding the solution obtained in the step 2 into the ethanol water solution obtained in the step 1, and continuously stirring to obtain a coating liquid.
Further, the chitosan-based slurry also contains 2-4 parts of tea polyphenol. The tea polyphenol and chitosan are added into the solution at the same time.
From the above description, it can be seen that the present invention has the following advantages:
1. the invention solves the problem of serious powder dropping of the existing soft tissue, and the multi-roller dip coating method is utilized to soak the organic coating liquid into the tissue and compound the tissue to form the soft tissue with a multi-layer structure.
2. According to the invention, pre-agglomeration is formed by utilizing the esterification characteristics of polyethylene glycol and hyaluronic acid in the soft tissue coating liquid, meanwhile, the viscosity of chitosan is relieved by utilizing ethanol, the solvent is removed by utilizing a hot rolling mode, the firmness of the coating liquid in the tissue is improved, a three-dimensional curing effect is formed by utilizing the staggered connection of a three-dimensional structure of chitosan and an esterification structure, and the effect of powder falling is avoided.
3. The water retention property of the soft tissue is improved by utilizing the moisture retention property of the glycerol, and meanwhile, the alcoholic hydroxyl group of the glycerol is similar to the hydroxyl group of the polyethylene glycol, so that a staggered esterification structure can be formed, the integral three-dimensional property is increased, and the composite stability of the tissue is improved.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic longitudinal sectional view of a first coating bath structure in an example of the present invention;
FIG. 3 is a schematic longitudinal sectional view of a second coating bath structure in an example of the present invention;
Detailed Description
An embodiment of the present invention is described in detail with reference to fig. 1 to 3, but the present invention is not limited in any way by the claims.
A production process of a soft tissue takes chitosan-based slurry as coating liquid, and three-layer compounding is carried out by a multi-roll dip coating method to obtain the soft tissue with a three-layer composite structure.
The production steps of the soft tissue are as follows:
step 1, placing a first tissue, a second tissue and a third tissue on a material frame for standby;
step 2, penetrating the second paper towel into the coating liquid for 3-6s in a rolling coating mode, then attaching the first paper towel on the upper surface of the second paper towel, and pressing under the pressure of 0.3-0.5MPa to obtain the second paper towel with the upper surface compounded with the first paper towel;
step 3, immersing a second paper towel compounding the first paper towel in the coating liquid for 2-4s in a rolling coating mode, then attaching a third paper towel on the lower surface of the second paper towel, and pressing under the pressure of 0.3-0.5MPa to obtain a prefabricated soft paper towel;
and 4, carrying out hot rolling treatment at 105-115 ℃ and 3-5MPa on the prefabricated soft tissue, and rolling to obtain the soft tissue.
The mass formula of the chitosan-based slurry is as follows:
10-20 parts of polyethylene glycol, 5-8 parts of chitosan, 8-10 parts of hyaluronic acid and 50-90 parts of ethanol aqueous solution, wherein the volume concentration of ethanol in the ethanol aqueous solution is 20-40%, and the molecular weight of the polyethylene glycol is 200-500.
The preparation method of the chitosan-based slurry comprises the following steps:
step 1, adding hyaluronic acid into an ethanol water solution, and uniformly stirring at the speed of 400-;
step 2, sequentially adding polyethylene glycol and chitosan into the ethanol aqueous solution obtained in the step 1, and stirring at the speed of 800r/min at the temperature of 20-50 ℃ to obtain a coating liquid
Further, the chitosan-based slurry also contains 20-50 parts of glycerol.
The preparation method of the chitosan-based slurry comprises the following steps:
step 1, adding hyaluronic acid into an ethanol water solution, and uniformly stirring at the speed of 400-;
step 2, adding polyethylene glycol into glycerol, stirring uniformly at the speed of 300-500r/min, and then adding chitosan, and stirring uniformly;
and 3, slowly adding the solution obtained in the step 2 into the ethanol water solution obtained in the step 1, and continuously stirring to obtain a coating liquid.
Further, the chitosan-based slurry also contains 2-4 parts of tea polyphenol. The tea polyphenol and chitosan are added into the solution at the same time.
As shown in fig. 1 to 3, the multi-roll dip coating method employs a three-layer coating apparatus including a first coating mechanism 1 and a second coating mechanism 2 arranged in parallel;
the first coating mechanism 1 comprises a first upper roll 1-1, a first coating groove 1-2 and a first lower roll 1-3, the first coating groove is arranged in the middle section of the first coating mechanism, two ends of the first coating groove are sealed, the first coating groove is fixed on a rack of the first coating mechanism 1, the first upper roll 1-1 is arranged above the first coating groove 1-2, the first lower roll 1-3 is arranged above the first coating groove 1-2, and two ends of the first upper roll 1-1 and two ends of the first lower roll 1-2 are both fixed on the rack of the first coating mechanism 1; in the using process, the first paper towel 3 is directly conveyed to the first upper roller 1-1 by the transmission roller and bypasses the first upper roller 1-1 to enter the tail part of the first coating groove 1-2, the second paper towel 4 is directly conveyed into the first coating groove 1-2 by the transmission roller and is extruded with the first paper towel 3 at the tail part of the first coating groove to form a first composite paper towel 6, the first composite paper towel 6 is conveyed to the second coating mechanism 2, and the third paper towel 5 is directly conveyed to the first lower roller 1-3 by the transmission roller and bypasses the first lower roller to be directly conveyed into the second coating mechanism;
the second coating mechanism 2 comprises a second coating groove 2-1 and a second lower roller 2-2, the second coating groove 2-1 is arranged in the middle section of the second coating mechanism, two ends of the second coating groove are sealed and fixed on a rack of the second coating mechanism 2, the second lower roller 2-2 is arranged below the second coating groove 2-1, and two ends of the second lower roller are fixed on the rack of the second coating mechanism 2; in the using process, the third paper towel passes through the first coating mechanism 1, is conveyed to the second lower roller 2-2 and bypasses the second lower pipe 2-2 to be conveyed to the tail part of the second coating groove 2-1, and the first composite paper towel 6 is conveyed to the second coating groove by the first coating mechanism, is converged with the third paper towel in the second coating groove and is extruded and discharged.
The first coating tank 1-2 comprises a first tank body 1-21 and a first press roller 1-22, the first press roller 1-22 is arranged in the first tank body 1-21, a first front guide roller 1-23 is arranged obliquely above one side of the first press roller 1-22, a first rear guide roller 1-24 is arranged obliquely above the other side of the first press roller 1-22, a first composite roller 1-25 with an air cylinder is arranged on the first rear guide roller 1-24, a first liquid inlet pipe 1-28 communicated with a coating liquid tank is arranged above the first press roller 1-22, the first liquid inlet pipe 1-28 is close to the first front guide roller 1-23, a first liquid discharge pipe 1-29 is arranged at the bottom of the first tank body 1-21, and the first liquid discharge pipe 1-29 is communicated into the coating liquid tank; in the using process, the first liquid inlet pipe, the first liquid outlet pipe and the coating liquid tank are communicated to form stable coating liquid for recycling, generally speaking, the lowest end of the first press roller is positioned above the liquid level in the first groove body, if the specific operation is not influenced below the liquid level, the second paper towel enters the first press roller through the guide of the first front guide roller and is transmitted to the first rear guide roller through the first press roller, at the moment, the first paper towel is transmitted to the surface of the first rear guide roller through the first upper roller and is converted into the first composite paper towel under the mutual extrusion action of the first rear guide roller and the first composite roller, meanwhile, the position of the first liquid inlet pipe can ensure that the coating liquid is soaked between the first front guide roller and the first press roller to form upper surface permeation, meanwhile, the rotation of the first press roller ensures that the coating liquid is formed on the surface of the first press roller, and the permeation coating of the second paper towel is formed under the self gravity action of the coating liquid, the coated second paper towel is extruded by the first rear guide roller and the first composite roller, so that a part of the coating liquid in the second paper towel overflows and is absorbed by the first paper towel, and the uniform coating of the composite paper towel is achieved.
Furthermore, the surface of the first press roller is rough, the rough structure is composed of fine protrusions arranged on the surface, and the rough structure formed by the fine protrusions can ensure that the coating liquid is prevented from being uniformly distributed, so that the surface coating effect is effectively improved, and the coating uniformity of the surface is improved.
Furthermore, first prepressing rollers 1-26 are arranged between the first pressing roller and the first rear guide roller, the first prepressing rollers are arranged on the side faces of the first pressing roller and tightly attached to the first pressing roller, and the coated second paper towel is subjected to preliminary extrusion through the first prepressing rollers and the first pressing roller to remove hanging beads on the surface, so that the accumulation of coating liquid of the first rear guide roller is reduced, and the cleanness of the first rear guide roller is ensured.
Further, the second coating tank 2-1 comprises a second tank body 2-11 and a second press roll 2-12, the second press roller 2-12 is arranged in the second tank body 2-11, the lowest end of the second press roller 2-12 is positioned below the liquid level of the second tank body 2-11, a second front guide roller 2-13 is arranged obliquely above one side of the second press roller 2-12, a second rear guide roller 2-14 is arranged obliquely above the other side, and the second rear guide roller 2-14 is provided with a second compound roller 2-15 with a cylinder, the side surface of the second tank body 2-11 is communicated with a second liquid inlet pipe 2-17 communicated with the coating liquid tank, the bottom part is communicated with a second liquid discharge pipe 2-18 communicated with the coating liquid, an auxiliary guide roller 2-21 is arranged behind and below the second rear guide roller 2-14; in the using process, the second liquid inlet pipe, the second liquid discharge pipe, the coating liquid box and the second tank body form a coating liquid circulating system, the bottom end of the second press roller can be always kept below the liquid level, the third paper towel bypasses the auxiliary guide roller under the transmission action of the second lower roller and is conveyed to the second rear guide roller, the first composite paper towel enters the second tank body through the transmission of the second front guide roller, and then the paper towel is wound around the bottom of the second press roller and is conveyed to a second rear guide roller to extrude the first composite paper towel and the third paper towel, the first composite paper towel and the third paper towel are converted into a product, namely a soft paper towel, through the mutual extrusion action of the second press roller and the second composite roller, the first composite roller and the second composite roller are both provided with air cylinders, in the use, utilize the cylinder to adjust the distance, ensure the coextrusion effect, loosen the cylinder when shutting down simultaneously, be convenient for inspection and dismantlement. The first composite paper towel is directly soaked into the coating liquid under the second press roller, and the lower surface of the first composite paper towel preferentially absorbs the coating liquid.
Furthermore, a second prepressing roller 2-18 is arranged between the second pressing roller and the second rear guide roller, the second prepressing roller is arranged on the side face of the second pressing roller and is tightly attached to the second pressing roller, and the coated first composite paper towel is preliminarily extruded by the second prepressing roller and the second pressing roller to remove hanging beads on the surface, so that the coating liquid accumulation of the second rear guide roller is reduced, and the cleanness of the second rear guide roller is ensured.
Example 1
Preparation of chitosan-based slurry:
the formula comprises the following components: 10g of polyethylene glycol (PEG200), 5g of chitosan, 8g of hyaluronic acid and 50g of ethanol aqueous solution, wherein the volume concentration of ethanol in the ethanol aqueous solution is 20%, and 1500g of coating liquid (about 1L) is prepared;
the configuration method comprises the following steps: adding hyaluronic acid into 1000g ethanol water solution, stirring uniformly at 400r/min, sequentially adding polyethylene glycol and chitosan at 20 deg.C, and stirring at 300r/min to obtain coating liquid.
Preparation of soft tissue:
placing the first paper towel, the second paper towel and the third paper towel on a material rack for standby; penetrating the second paper towel into the coating liquid for 3-6s in a rolling coating mode, then attaching the first paper towel on the upper surface of the second paper towel, and pressing under the pressure of 0.3MPa to obtain the second paper towel with the upper surface compounded with the first paper towel; immersing a second paper towel compounding the first paper towel in the coating liquid for 2-4s in a rolling coating mode, then attaching a third paper towel on the lower surface of the second paper towel, and pressing under the pressure of 0.3MPa to obtain a prefabricated soft paper towel; and (3) carrying out hot rolling treatment at 105 ℃ and 3MPa on the prefabricated soft tissue, and rolling to obtain the soft tissue.
Example 2
Preparation of chitosan-based slurry:
the formula comprises the following components: 20g of polyethylene glycol (PEG200), 8g of chitosan, 10g of hyaluronic acid and 90g of ethanol aqueous solution, wherein the volume concentration of ethanol in the ethanol aqueous solution is 20 percent, and 1300g of coating liquid (about 1L) is prepared;
the configuration method comprises the following steps: adding hyaluronic acid into 1300g ethanol water solution, stirring uniformly at 800r/min, then sequentially adding polyethylene glycol and chitosan at 50 ℃, and stirring at 800r/min to obtain a coating liquid.
Preparation of soft tissue:
placing the first paper towel, the second paper towel and the third paper towel on a material rack for standby; penetrating a second paper towel into the coating liquid for 6s in a rolling coating mode, then attaching the first paper towel on the upper surface of the second paper towel, and pressing under the pressure of 0.5MPa to obtain the second paper towel with the upper surface compounded with the first paper towel; immersing a second paper towel compounding the first paper towel in the coating liquid for 4s in a rolling coating mode, then pasting a third paper towel on the lower surface of the second paper towel, and pressing under the pressure of 0.5MPa to obtain a prefabricated soft paper towel; and (3) carrying out hot rolling treatment at 115 ℃ and 5MPa on the prefabricated soft tissue, and rolling to obtain the soft tissue.
Example 3
Preparation of chitosan-based slurry:
the formula comprises the following components: 15g of polyethylene glycol (PEG400), 6g of chitosan, 9g of hyaluronic acid and 70g of ethanol aqueous solution, wherein the volume concentration of ethanol in the ethanol aqueous solution is 40%, and 1420g of coating liquid (about 1L) is prepared;
the configuration method comprises the following steps: adding hyaluronic acid into 1420g of ethanol water solution, uniformly stirring at 600r/min, then sequentially adding polyethylene glycol and chitosan at 40 ℃, and stirring at 500r/min to obtain a coating liquid.
Preparation of soft tissue:
placing the first paper towel, the second paper towel and the third paper towel on a material rack for standby; penetrating a second paper towel into the coating liquid for 5s in a rolling coating mode, then attaching the first paper towel on the upper surface of the second paper towel, and pressing under the pressure of 0.4MPa to obtain the second paper towel with the upper surface compounded with the first paper towel; immersing a second paper towel compounding the first paper towel in the coating liquid for 3s in a rolling coating mode, then pasting a third paper towel on the lower surface of the second paper towel, and pressing under the pressure of 0.4MPa to obtain a prefabricated soft paper towel; and (3) carrying out hot rolling treatment at 110 ℃ and 4MPa on the prefabricated soft tissue, and rolling to obtain the soft tissue.
Example 4
Preparation of chitosan-based slurry:
the formula comprises the following components: 10g of polyethylene glycol (PEG200), 5g of chitosan, 8g of hyaluronic acid, 50g of ethanol aqueous solution and 20g of glycerol, wherein the volume concentration of ethanol in the ethanol aqueous solution is 20%, and 1330g of coating solution (about 1L) is prepared;
the configuration method comprises the following steps:
step 1, adding hyaluronic acid into an ethanol water solution, and uniformly stirring at the speed of 400 r/min; step 2, adding polyethylene glycol into glycerol, uniformly stirring at the speed of 300r/min, then adding the polyethylene glycol into chitosan, and uniformly stirring; and 3, slowly adding the solution obtained in the step 2 into the ethanol water solution obtained in the step 1, and continuously stirring to obtain a coating liquid.
The process for the soft tissue paper was the same as in example 1.
Example 5
Preparation of chitosan-based slurry:
the formula comprises the following components: 20g of polyethylene glycol (PEG200), 8g of chitosan, 10g of hyaluronic acid, 90g of ethanol aqueous solution and 50g of glycerol, wherein the volume concentration of ethanol in the ethanol aqueous solution is 40 percent, and 1270g of coating liquid (about 1L) is prepared;
the configuration method comprises the following steps:
step 1, adding hyaluronic acid into an ethanol water solution, and uniformly stirring at the speed of 800 r/min; step 2, adding polyethylene glycol into glycerol, uniformly stirring at the speed of 500r/min, then adding the polyethylene glycol into chitosan, and uniformly stirring; and 3, slowly adding the solution obtained in the step 2 into the ethanol water solution obtained in the step 1, and continuously stirring to obtain a coating liquid.
The process for the soft tissue paper was the same as in example 2.
Example 6
Preparation of chitosan-based slurry:
the formula comprises the following components: 15g of polyethylene glycol (PEG400), 6g of chitosan, 9g of hyaluronic acid, 70g of ethanol aqueous solution and 30g of glycerol, wherein the volume concentration of ethanol in the ethanol aqueous solution is 40 percent, and 1300g of coating liquid (about 1L) is prepared;
the configuration method comprises the following steps:
step 1, adding hyaluronic acid into an ethanol water solution, and uniformly stirring at a speed of 600 r/min; step 2, adding polyethylene glycol into glycerol, uniformly stirring at the speed of 400r/min, then adding the polyethylene glycol into chitosan, and uniformly stirring; and 3, slowly adding the solution obtained in the step 2 into the ethanol water solution obtained in the step 1, and continuously stirring to obtain a coating liquid.
The process for the soft tissue paper was the same as in example 3.
Example 7
Preparation of chitosan-based slurry:
the formula comprises the following components: 10g of polyethylene glycol (PEG200), 5g of chitosan, 8g of hyaluronic acid, 50g of ethanol aqueous solution, 20g of glycerol and 2g of tea polyphenol, wherein the volume concentration of ethanol in the ethanol aqueous solution is 20 percent, and 1360g of coating liquid (about 1L) is prepared;
the configuration method comprises the following steps:
step 1, adding hyaluronic acid into an ethanol water solution, and uniformly stirring at the speed of 400 r/min; step 2, adding polyethylene glycol into glycerol, uniformly stirring at the speed of 300r/min, then adding the polyethylene glycol into chitosan, and uniformly stirring; and 3, slowly adding the solution obtained in the step 2 into the ethanol water solution obtained in the step 1, and continuously stirring to obtain a coating liquid.
The process for the soft tissue paper was the same as in example 1.
Example 8
Preparation of chitosan-based slurry:
the formula comprises the following components: 20g of polyethylene glycol (PEG200), 8g of chitosan, 10g of hyaluronic acid, 90g of ethanol aqueous solution, 50g of glycerol and 4g of tea polyphenol, wherein the volume concentration of ethanol in the ethanol aqueous solution is 20 percent, and 1300g of coating liquid (about 1L) is prepared;
the configuration method comprises the following steps:
step 1, adding hyaluronic acid into an ethanol water solution, and uniformly stirring at the speed of 800 r/min; step 2, adding polyethylene glycol into glycerol, uniformly stirring at the speed of 500r/min, then adding the polyethylene glycol into chitosan, and uniformly stirring; and 3, slowly adding the solution obtained in the step 2 into the ethanol water solution obtained in the step 1, and continuously stirring to obtain a coating liquid.
The process for the soft tissue paper was the same as in example 2.
Example 9
Preparation of chitosan-based slurry:
the formula comprises the following components: 15g of polyethylene glycol (PEG400), 6g of chitosan, 9g of hyaluronic acid, 70g of ethanol aqueous solution, 40g of glycerol and 3g of tea polyphenol, wherein the volume concentration of ethanol in the ethanol aqueous solution is 40 percent, and 1300g of coating liquid (about 1L) is prepared;
preparation of chitosan-based slurry:
step 1, adding hyaluronic acid into an ethanol water solution, and uniformly stirring at a speed of 600 r/min; step 2, adding polyethylene glycol into glycerol, uniformly stirring at the speed of 400r/min, then adding the polyethylene glycol into chitosan, and uniformly stirring; and 3, slowly adding the solution obtained in the step 2 into the ethanol water solution obtained in the step 1, and continuously stirring to obtain a coating liquid.
The process for the soft tissue paper was the same as in example 3.
The soft tissues of the above examples 1 to 9 were coated with a softener, and had smooth and soft hand feeling, ultra-good moisture retention, no yellowing, and broad-spectrum antibacterial activity, and the antibacterial activity against escherichia coli and staphylococcus aureus was as high as 95%.
In summary, the invention has the following advantages:
1. the invention solves the problem of serious powder dropping of the existing soft tissue, and the multi-roller dip coating method is utilized to soak the organic coating liquid into the tissue and compound the tissue to form the soft tissue with a multi-layer structure.
2. According to the invention, pre-agglomeration is formed by utilizing the esterification characteristics of polyethylene glycol and hyaluronic acid in the soft tissue coating liquid, meanwhile, the viscosity of chitosan is relieved by utilizing ethanol, the solvent is removed by utilizing a hot rolling mode, the firmness of the coating liquid in the tissue is improved, a three-dimensional curing effect is formed by utilizing the staggered connection of a three-dimensional structure of chitosan and an esterification structure, and the effect of powder falling is avoided.
3. The water retention property of the soft tissue is improved by utilizing the moisture retention property of the glycerol, and meanwhile, the alcoholic hydroxyl group of the glycerol is similar to the hydroxyl group of the polyethylene glycol, so that a staggered esterification structure can be formed, the integral three-dimensional property is increased, and the composite stability of the tissue is improved.
It should be understood that the detailed description of the invention is merely illustrative of the invention and is not intended to limit the invention to the specific embodiments described. It will be appreciated by those skilled in the art that the present invention may be modified or substituted equally as well to achieve the same technical result; as long as the use requirements are met, the method is within the protection scope of the invention.
Claims (7)
1. The production process of the soft tissue is characterized in that: and (3) taking the chitosan-based slurry as a coating liquid, and carrying out three-layer compounding by using a multi-roll dip coating method to obtain the soft tissue with a three-layer composite structure.
2. The process of claim 1, wherein the soft tissue is produced by: the production steps of the soft tissue are as follows:
step 1, placing a first tissue, a second tissue and a third tissue on a material frame for standby;
step 2, penetrating the second paper towel into the coating liquid for 3-6s in a rolling coating mode, then attaching the first paper towel on the upper surface of the second paper towel, and pressing under the pressure of 0.3-0.5MPa to obtain the second paper towel with the upper surface compounded with the first paper towel;
step 3, immersing a second paper towel compounding the first paper towel in the coating liquid for 2-4s in a rolling coating mode, then attaching a third paper towel on the lower surface of the second paper towel, and pressing under the pressure of 0.3-0.5MPa to obtain a prefabricated soft paper towel;
and 4, carrying out hot rolling treatment at 105-115 ℃ and 3-5MPa on the prefabricated soft tissue, and rolling to obtain the soft tissue.
3. The process of claim 1, wherein the soft tissue is produced by: the mass formula of the chitosan-based slurry is as follows:
10-20 parts of polyethylene glycol, 5-8 parts of chitosan, 8-10 parts of hyaluronic acid and 50-90 parts of ethanol aqueous solution, wherein the volume concentration of ethanol in the ethanol aqueous solution is 20-40%, and the molecular weight of the polyethylene glycol is 200-500.
4. A process for producing a soft tissue as claimed in claim 3, wherein: the preparation method of the chitosan-based slurry comprises the following steps:
step 1, adding hyaluronic acid into an ethanol water solution, and uniformly stirring at the speed of 400-;
and 2, sequentially adding polyethylene glycol and chitosan into the ethanol aqueous solution obtained in the step 1, and stirring at the speed of 800r/min at the temperature of 20-50 ℃ to obtain the coating liquid.
5. A process for producing a soft tissue as claimed in claim 3, wherein: the chitosan-based slurry also contains 20-50 parts of glycerol.
6. The process of claim 5, wherein the soft tissue is produced by: the preparation method of the chitosan-based slurry comprises the following steps:
step 1, adding hyaluronic acid into an ethanol water solution, and uniformly stirring at the speed of 400-;
step 2, adding polyethylene glycol into glycerol, stirring uniformly at the speed of 300-500r/min, and then adding chitosan, and stirring uniformly;
and 3, slowly adding the solution obtained in the step 2 into the ethanol water solution obtained in the step 1, and continuously stirring to obtain a coating liquid.
7. A process for producing a soft tissue as claimed in claim 3, wherein: the chitosan-based slurry also contains 2-4 parts of tea polyphenol.
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| CN202010729602.6A CN113981737A (en) | 2020-07-27 | 2020-07-27 | Production process of soft tissue |
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| FR1383484A (en) * | 1963-03-27 | 1964-12-24 | Cons Papers | Coated paper manufacturing process |
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| CN103194930A (en) * | 2012-01-06 | 2013-07-10 | 金红叶纸业集团有限公司 | Household paper having mixed fragrance, and production technology thereof |
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| CN109653027A (en) * | 2018-11-22 | 2019-04-19 | 常州市南天电子印刷系统工程有限公司 | The production technology of soft paper handkerchief softening agent and soft paper handkerchief |
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| FR1383484A (en) * | 1963-03-27 | 1964-12-24 | Cons Papers | Coated paper manufacturing process |
| CN1266748A (en) * | 1999-03-12 | 2000-09-20 | 普雷马克Rwp控股公司 | Apparatus and method for two-face treatment of sheet |
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