CN110565427A - High-antibacterial natural-color bamboo fiber kitchen paper and preparation method thereof - Google Patents
High-antibacterial natural-color bamboo fiber kitchen paper and preparation method thereof Download PDFInfo
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- CN110565427A CN110565427A CN201910783637.5A CN201910783637A CN110565427A CN 110565427 A CN110565427 A CN 110565427A CN 201910783637 A CN201910783637 A CN 201910783637A CN 110565427 A CN110565427 A CN 110565427A
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C3/00—Pulping cellulose-containing materials
- D21C3/02—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
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- 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
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/002—Tissue paper; Absorbent paper
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Abstract
The invention discloses high-antibacterial natural-color bamboo fiber kitchen paper and a preparation method thereof, wherein the preparation method comprises the following steps: s1, washing the bamboo chips with water to remove impurities and dewater the bamboo chips for later use; s2, cooking by an alkaline method; s3, bamboo joints and thick fiber bundles in the cooked slurry are screened out and washed by hot water in a countercurrent mode; s4, concentrating the obtained natural color bamboo pulp fiber by a filter press, grinding the natural color bamboo pulp fiber into thick liquid at high concentration, and grinding the natural color bamboo pulp fiber into thick liquid at low concentration to obtain paper pulp; s5, diluting paper pulp, desanding, forming, dehydrating, drying, wrinkling and coiling to form base paper; and cutting and packaging the S6 base paper. The high-antibacterial natural-color bamboo fiber kitchen paper disclosed by the invention adopts a sulfur-free cooking process, does not have an oxygen removal link which is general in the industry, does not undergo chlorine-containing bleaching treatment, is green and environment-friendly in production process, retains the properties of bamboo raw materials to the maximum extent, has light bamboo fragrance, and has natural antibacterial effect due to bamboo quinone contained in pulp.
Description
Technical Field
The invention belongs to the technical field of papermaking, and particularly relates to high-antibacterial natural-color bamboo fiber kitchen paper and a preparation method thereof.
Background
The main stream of household paper in the market of China is paper bleached by a bleaching agent, and in order to improve the whiteness of toilet paper and improve the attractiveness of the paper, paper mills generally add some special additives into paper pulp for making paper. Some manufacturers use a large amount of fluorescent whitening agents in an adventure manner in order to pursue high whiteness of paper so as to improve brightness and aesthetic feeling of the paper, so that not only can environmental pollution be caused, but also human cells can be mutated and toxicity is accumulated by fluorescent substances to become a potential carcinogenic factor, and the fluorescent agents can cause damage to human bodies after being absorbed by the human bodies.
a misstatement exists in the process that many consumers buy the household paper, the white toilet paper is considered to be high in whiteness, clean and sanitary, and the fact that carcinogens such as dioxin, adsorbable organic halide and the like are generated in the bleaching process of the paper pulp is not known. Dioxin is a persistent organochlorine compound, has more than 30 kinds, has the characteristics of carcinogenesis, teratogenesis and mutagenesis, has long half-life and long residual time of 10 years, is easy to accumulate in the environment for a long time, and is called as a toxicant with the strongest toxicity on the earth. Without doubt, life paper made with long-term use of bleached pulp poses a threat to its health and is a "stealth killer" of human health.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides high-antibacterial natural-color bamboo fiber kitchen paper and a preparation method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
A preparation method of high-antibacterial natural-color bamboo fiber kitchen paper comprises the following steps:
S1, washing the bamboo chips with water to remove impurities, and dehydrating for later use;
S2, cooking by an alkaline method, adding cooking liquor into the bamboo chips, circularly heating the cooking liquor to 140-170 ℃, increasing the pressure to 0.4-0.7Mpa, preserving the heat for 20-60 minutes, wherein the whole cooking process time is 240-400 minutes, and the cooking liquor is sodium hydroxide solution;
s3, bamboo joints and thick fiber bundles in the cooked pulp are screened out, and the pulp is cleaned by a hot water countercurrent washing method to obtain the natural color bamboo pulp fiber;
S4, concentrating the obtained natural color bamboo pulp fiber by a filter press, grinding the natural color bamboo pulp fiber into thick liquid at high concentration, and grinding the natural color bamboo pulp fiber into thick liquid at low concentration to obtain paper pulp;
S5, diluting paper pulp, desanding, forming, dehydrating, drying, wrinkling and coiling to form base paper;
And the S6 base paper is subjected to links such as slitting, packaging and the like and layer-by-layer inspection to form a qualified finished product.
Further, in the S1 preparation, the bamboo chips are piled up for 30-100 days before being washed by water.
furthermore, the amount of sodium hydroxide in S2 is 15-30% of the amount of the oven-dried raw material, and the liquid ratio is 1: 3-6.
further, in the drying process of S5, the wet paper is closely attached to the surface of the drying cylinder with a surface temperature of 100 ℃ or higher, and is heated and dried by hot air convection at about 100 ℃, and sterilized at high temperature, so that the total number of bacterial colonies of the hygiene index of the base paper is far lower than the standard specified value, and the base paper does not contain escherichia coli, staphylococcus aureus, hemolytic streptococcus and the like.
further, the bamboo chips are derived from Sasa Arctii or Sasa veitchii.
The invention also provides high-antibacterial natural-color bamboo fiber kitchen paper which is prepared by the method.
Further, the high antibacterial natural color bamboo fiber kitchen paper has 2-3 basic layers, and the whiteness of the basic layers is 28-35%.
Compared with the prior art, the invention has the beneficial effects that:
The high-antibacterial natural-color bamboo fiber kitchen paper is prepared into natural-color bamboo pulp through the steps of material preparation, cooking, screening, washing and the like, the pulp is made into base paper through the working procedures of concentration by a filter press, high-concentration pulp grinding, low-concentration sand removal and the like, and the base paper is subjected to post-processing, slitting and packaging to form a finished product, wherein the high-antibacterial natural-color bamboo fiber kitchen paper is of a sheet structure, a base layer is formed by all bamboo pulp fibers, and the whiteness of the base layer is 28-35%. The basic layer has 2-3 layers. The natural color bamboo pulp fiber which is free of sulfur cooking, unbleached and can retain the essence of the bamboo raw material to the maximum extent is adopted, the cooking adopts an alkaline method instead of a sulfate method which is commonly adopted in the industry, no mirabilite is added in an alkaline furnace, so that the cooking liquor does not contain sodium sulfide and does not use a cooking auxiliary agent containing sulfur, the pollution of substances such as hydrogen sulfide, methyl mercaptan, methyl sulfide and the like which generate stink in the cooking process to the surrounding atmosphere is avoided, the environment is protected, the characteristics of the bamboo fiber are retained to the maximum extent without oxygen desorption, and the natural antibacterial bamboo quinone is not required to be bleached, so the natural color bamboo pulp fiber is a real natural bamboo additive-free product. The invention makes various physical indexes of paper better, such as: tensile index, water absorption properties, etc.; the pollution caused by the residue and the discharge of bleaching chemicals is avoided, and the environment of the surrounding water area and the health of consumers are better protected.
The high antibacterial natural color bamboo fiber kitchen paper disclosed by the invention adopts a sulfur-free cooking process, does not have an oxygen removal link which is common in the industry, does not undergo chlorine-containing bleaching treatment, is green and environment-friendly in production process, retains the properties of bamboo raw materials to the maximum extent, has light bamboo fragrance, and has natural antibacterial effect due to bamboo quinone contained in pulp.
The fast-growing bamboo is adopted, the fast-growing bamboo has the characteristics of one-time planting, high growth speed and the like, the bamboo can be cut down 1-2 years after being planted, and can be continuously subjected to regeneration and felling, the ecological environment protection is facilitated, meanwhile, the characteristics of a large number of local hills are utilized, a mode of forest paper-integration engineering is adopted, and effective cooperation is carried out with local rural areas, so that the living environment of people is beautified, the local economic development is driven, the economic income of local farmers is increased, and the economic development and the win-win of farmers and enterprises are realized. If straw pulp is used for producing unbleached pulp, the strength is too low due to short fiber and high content of foreign cells, the use requirement is difficult to meet, the alkali recovery rate is low, and the influence on the environment is large, if wood pulp is used for producing unbleached household paper, a large amount of forest wood is felled.
The natural high antibacterial kitchen paper has better bulk, high water absorption, strong oil absorption and antibacterial property than white paper, can be widely applied to places with more oil stains such as kitchens, tableware and the like, and can completely replace conventional kitchen cleaning appliances such as rag, white paper and the like.
The high antibacterial bamboo fiber kitchen paper meets or is superior to all indexes except the whiteness of GB/T26174-2010 kitchen paper: the base paper has a basis weight of 16-50 g/m2Dry tensile index (average length and breadth) greater than 5 N.m/g, wet tensile index (longitudinal) greater than 50 N.m/g, and 2-5mm holes less than or equal to 10 holes/m2And the holes larger than 5mm to 8mm are not more than 1 per meter2Holes larger than 8mm are not provided; high bulk: the liquid absorption height is larger than: 25mm/100 s; the high bacteriostatic kitchen paper is made into a drawing sheet box shape or a reel shape (with or without embossing). The size of the paper in the shape of the drawing box is plus or minus 4mm, and the bag is full and square; a row of perforation (102) is punched at intervals of the reel-shaped high bacteriostatic kitchen roll paper, the length of each perforation is 1-3mm, the interval distance between every two perforations is 0.5-2.0mm, and the width of each perforation is 0.1-1.
Detailed Description
The present invention will be further described with reference to the following examples, which are intended to illustrate only some, but not all, of the embodiments of the present invention. All other embodiments that can be obtained by a person skilled in the art based on the embodiments of the present invention without any creative effort belong to the protection scope of the present invention.
Example 1
S1, preparing materials: after 30 days of stockpiling, long pieces and bamboo chips are screened out by a bamboo chip sieve, then impurities such as silt, bamboo chips and the like are removed by washing, and finally, after dehydration treatment, the bamboo chips are conveyed to a bamboo chip bin by a belt conveyor for storage.
S2 cooking: adopting an alkaline method for cooking, wherein the using amount of sodium hydroxide is 30% of the amount of the absolutely dry raw material, the cooking liquor does not contain sodium sulfide or sulfur-containing cooking auxiliary agent, the liquor ratio is 1:6, loading the raw material of the bamboo chips in the storage bin into a pot by using a belt conveyor, adding the cooking liquor, circularly heating the cooking liquor to 140-170 ℃, increasing the pressure to 0.7Mpa, preserving the heat for 20 minutes, and the whole cooking process lasts for 400 minutes.
S3 screening, washing and purifying: bamboo joints and thick fiber bundles in the pulp are screened out in a closed screening mode, the pulp is cleaned by a hot water countercurrent washing method to obtain the natural color bamboo pulp fiber, black liquor in the pulp is separated out, the black liquor is sent to an alkali recovery system to recover heat to generate steam for cooking paper making, alkali is recovered for cooking, and the alkali recovery rate is higher than 90%.
s4 high-low concentration refining treatment: the obtained natural color bamboo pulp fiber is subjected to filter press concentration, high-concentration pulping and low-concentration pulping to obtain paper pulp, the fibers are rubbed and rubbed with each other through mechanical action in the process, thick and long fibers are cut short, crushed and broomed, the fibers are softer, the treatment is favorable for the fibers to be mutually interwoven to form uniform paper sheets, and hydrogen bonds are formed in the next drying process, so that the paper sheets have better strength.
S5 paper pulp is diluted, desanding, forming, dewatering, drying, wrinkling and reeling to form base paper, in the drying process, the wet paper is tightly attached to the surface of a drying cylinder with the surface temperature of more than 100 ℃, hot air convection heating drying is carried out at the temperature of about 100 ℃, and high-temperature sterilization is carried out, so that the total number of bacterial colonies of the health index of the base paper is far lower than the standard specified value, and the base paper does not contain escherichia coli, staphylococcus aureus, hemolytic streptococcus and the like.
S6 post-processing of base paper: the base paper produced by the paper machine is subjected to links such as slitting, packaging and the like and layer-by-layer inspection to form a qualified finished product.
Example 2
S1, preparing materials: the purchased bamboo chips piled up for 100 days are screened out long chips and bamboo chips by a bamboo chip screen, then washed by water to remove impurities such as silt, bamboo chips and the like, and finally dewatered and sent to a bamboo chip bin by a belt conveyor for storage.
S2 cooking: adopting an alkaline method for cooking, wherein the using amount of sodium hydroxide is 20 percent of the amount of the absolutely dry raw material, the cooking liquor does not contain sodium sulfide and does not use a cooking auxiliary agent containing sulfur, the liquor ratio is 1:4, the raw material of the bamboo chips in the storage bin is put into a pot by a belt conveyor, the cooking liquor is added, the cyclic heating of the cooking liquor is carried out, the temperature is raised to 150 ℃, the pressure is increased by 0.5Mpa, the heat preservation is carried out for 60 minutes, and the whole cooking time is 300 minutes.
S3 screening, washing and purifying: bamboo joints and thick fiber bundles in the pulp are screened out in a closed screening mode, the pulp is cleaned by a hot water countercurrent washing method to obtain the natural color bamboo pulp fiber, black liquor in the pulp is separated out, the black liquor is sent to an alkali recovery system to recover heat to generate steam for cooking paper making, alkali is recovered for cooking, and the alkali recovery rate is higher than 90%.
S4 high-low concentration refining treatment: the obtained natural color bamboo pulp fiber is subjected to filter press concentration, high-concentration pulping and low-concentration pulping to obtain paper pulp, the fibers are rubbed and rubbed with each other through mechanical action in the process, thick and long fibers are cut short, crushed and broomed, the fibers are softer, the treatment is favorable for the fibers to be mutually interwoven to form uniform paper sheets, and hydrogen bonds are formed in the next drying process, so that the paper sheets have better strength.
S5 base paper manufacturing and antibacterial performance increasing: the paper pulp is diluted, desanded, formed, dewatered, dried, wrinkled and coiled to form the base paper, in the drying process, the wet paper is closely attached to the surface of a drying cylinder with the surface temperature of more than 100 ℃, hot air convection heating drying is carried out at about 100 ℃, and high-temperature sterilization is carried out, so that the total number of bacterial colonies of the health index of the base paper is far lower than the standard specified value, and the base paper does not contain escherichia coli, staphylococcus aureus, hemolytic streptococcus and the like.
S6 post-processing of base paper: the base paper produced by the paper machine is subjected to links such as slitting, packaging and the like and layer-by-layer inspection to form a qualified finished product.
example 3
S1, preparing materials: after 50 days of stockpiling, long pieces and bamboo chips are screened out by a bamboo chip screen, then impurities such as silt, bamboo chips and the like are removed by washing, and finally, after dehydration treatment, the bamboo chips are conveyed to a bamboo chip bin by a belt conveyor for storage.
S2 cooking: adopting an alkaline method for cooking, wherein the using amount of sodium hydroxide is 25 percent of the amount of the absolutely dry raw material, the cooking liquor does not contain sodium sulfide and does not use a cooking auxiliary agent containing sulfur, the liquor ratio is 1:5, the raw material of the bamboo chips in the storage bin is put into a pot by a belt conveyor, the cooking liquor is added, the temperature of the cooking liquor is raised to 160 ℃ by circular heating, the pressure is increased by 0.6Mpa, the temperature is kept for 30 minutes, and the whole cooking time is 350 minutes.
s3 screening, washing and purifying: bamboo joints and thick fiber bundles in the pulp are screened out in a closed screening mode, the pulp is cleaned by a hot water countercurrent washing method to obtain the natural color bamboo pulp fiber, black liquor in the pulp is separated out, the black liquor is sent to an alkali recovery system to recover heat to generate steam for cooking paper making, alkali is recovered for cooking, and the alkali recovery rate is higher than 90%.
S4 high-low concentration refining treatment: the obtained natural color bamboo pulp fiber is subjected to filter press concentration, high-concentration pulping and low-concentration pulping to obtain paper pulp, the fibers are rubbed with each other in the process, thick and long fibers are cut short, crushed and broomed by devillicates to become softer, the treatment is favorable for the fibers to be mutually interwoven to form uniform paper sheets, and hydrogen bonds are formed in the next drying process, so that the paper sheets are endowed with better strength.
S5 paper pulp is diluted, desanding, forming, dewatering, drying, wrinkling and reeling to form base paper, in the drying process, the wet paper is tightly attached to the surface of a drying cylinder with the surface temperature of more than 100 ℃, hot air convection heating drying is carried out at the temperature of about 100 ℃, and high-temperature sterilization is carried out, so that the total number of bacterial colonies of the health index of the base paper is far lower than the standard specified value, and the base paper does not contain escherichia coli, staphylococcus aureus, hemolytic streptococcus and the like.
S6 post-processing of base paper: the base paper produced by the paper machine is subjected to links such as slitting, packaging and the like and layer-by-layer inspection to form a qualified finished product.
Example 4
S1, preparing materials: after 70 days of stockpiling, long bamboo chips and bamboo chips are screened out by a bamboo chip screen, then impurities such as silt, bamboo chips and the like are removed by washing, and finally, after dehydration treatment, the bamboo chips are conveyed to a bamboo chip bin by a belt conveyor for storage.
S2 cooking: adopting an alkaline method for cooking, wherein the using amount of sodium hydroxide is 15% of the amount of the absolutely dry raw material, the cooking liquor does not contain sodium sulfide or sulfur-containing cooking auxiliary agent, the liquor ratio is 1:3, loading the raw material of the bamboo chips in the storage bin into a pot by using a belt conveyor, adding the cooking liquor, circularly heating the cooking liquor to 140-170 ℃, increasing the pressure to 0.4Mpa, preserving the heat for 50 minutes, and the whole cooking time is 240 minutes.
s3 screening, washing and purifying: bamboo joints and thick fiber bundles in the pulp are screened out in a closed screening mode, the pulp is cleaned by a hot water countercurrent washing method to obtain the natural color bamboo pulp fiber, black liquor in the pulp is separated out, the black liquor is sent to an alkali recovery system to recover heat to generate steam for cooking paper making, alkali is recovered for cooking, and the alkali recovery rate is higher than 90%.
s4 high-low concentration refining treatment: the obtained natural color bamboo pulp fiber is subjected to filter press concentration, high-concentration pulping and low-concentration pulping to obtain paper pulp, the fibers are rubbed and rubbed with each other through mechanical action in the process, thick and long fibers are cut short, crushed and broomed, the fibers are softer, the treatment is favorable for the fibers to be mutually interwoven to form uniform paper sheets, and hydrogen bonds are formed in the next drying process, so that the paper sheets have better strength.
s5 base paper manufacturing and antibacterial performance increasing: the paper pulp is diluted, desanded, formed, dewatered, dried, wrinkled and coiled to form the base paper, in the drying process, the wet paper is closely attached to the surface of a drying cylinder with the surface temperature of more than 100 ℃, hot air convection heating drying is carried out at about 100 ℃, and high-temperature sterilization is carried out, so that the total number of bacterial colonies of the health index of the base paper is far lower than the standard specified value, and the base paper does not contain escherichia coli, staphylococcus aureus, hemolytic streptococcus and the like.
S6 post-processing of base paper: the base paper produced by the paper machine is subjected to links such as slitting, packaging and the like and layer-by-layer inspection to form a qualified finished product.
The comparison of this application with similar products on the market is shown in table 1. As can be seen from the data in Table 1, the bulk, water absorption and bacteriostasis rate of the present invention are superior to those of the similar products in the market.
TABLE 1 comparison of the results of the tests of the properties of the products of the present invention and of similar products
the above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the scope of the present invention is not limited by the above disclosure.
Claims (7)
1. A preparation method of high-antibacterial natural-color bamboo fiber kitchen paper is characterized by comprising the following steps:
S1, washing the bamboo chips with water to remove impurities, and dehydrating for later use;
S2, cooking by an alkaline method, adding cooking liquor into the bamboo chips, circularly heating the cooking liquor to 140-170 ℃, increasing the pressure to 0.4-0.7Mpa, preserving the heat for 20-60 minutes, wherein the whole cooking process time is 240-400 minutes, and the cooking liquor is sodium hydroxide solution;
s3, bamboo joints and thick fiber bundles in the cooked pulp are screened out, and the pulp is cleaned by a hot water countercurrent washing method to obtain the natural color bamboo pulp fiber;
S4, concentrating the obtained natural color bamboo pulp fiber by a filter press, grinding the natural color bamboo pulp fiber into thick liquid at high concentration, and grinding the natural color bamboo pulp fiber into thick liquid at low concentration to obtain paper pulp;
S5, diluting paper pulp, desanding, forming, dehydrating, drying, wrinkling and coiling to form base paper;
And cutting and packaging the S6 base paper.
2. The preparation method of the high antibacterial natural color bamboo fiber kitchen paper as claimed in claim 1, wherein in the S1 preparation, the bamboo chips are piled up for 30-100 days before being washed with water.
3. The preparation method of the high antibacterial natural color bamboo fiber kitchen paper as claimed in claim 1, wherein the amount of sodium hydroxide in S2 is 15-30% of the amount of the oven dried raw material, and the liquid ratio is 1: 3-6.
4. The preparation method of the highly antibacterial natural-color bamboo fiber kitchen paper as claimed in claim 1, wherein in the drying process of S5, the wet paper is closely attached to the surface of a drying cylinder with a surface temperature of 100 ℃ or higher, and is heated and dried by hot air convection at about 100 ℃ to sterilize at high temperature, so that the total number of bacterial colonies of the health index of the base paper is far lower than the standard specified value, and the paper does not contain escherichia coli, staphylococcus aureus, hemolytic streptococcus and the like.
5. the preparation method of the high antibacterial natural color bamboo fiber kitchen paper as claimed in claim 1, wherein the bamboo chips are derived from Sasa albo-marginata or Siji bamboo.
6. The high-antibacterial natural-color bamboo fiber kitchen paper is characterized by being prepared by the preparation method of the high-antibacterial natural-color bamboo fiber kitchen paper according to any one of claims 1 to 5.
7. The high antibacterial natural color bamboo fiber kitchen paper as claimed in claim 6, wherein the high antibacterial natural color bamboo fiber kitchen paper has 2-3 basic layers, and the whiteness of the basic layers is 28-35%.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112064416A (en) * | 2020-09-04 | 2020-12-11 | 江苏好健康新材料有限公司 | Multifunctional kitchen odor-removing dust-free paper and manufacturing method thereof |
| CN112695570A (en) * | 2020-12-25 | 2021-04-23 | 牡丹江恒丰纸业股份有限公司 | Preparation method of antibacterial food wiping paper |
-
2019
- 2019-08-23 CN CN201910783637.5A patent/CN110565427A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112064416A (en) * | 2020-09-04 | 2020-12-11 | 江苏好健康新材料有限公司 | Multifunctional kitchen odor-removing dust-free paper and manufacturing method thereof |
| CN112695570A (en) * | 2020-12-25 | 2021-04-23 | 牡丹江恒丰纸业股份有限公司 | Preparation method of antibacterial food wiping paper |
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Application publication date: 20191213 |