CN112176770A - Method for manufacturing novel medical dialyzing paper - Google Patents
Method for manufacturing novel medical dialyzing paper Download PDFInfo
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- CN112176770A CN112176770A CN202010967716.4A CN202010967716A CN112176770A CN 112176770 A CN112176770 A CN 112176770A CN 202010967716 A CN202010967716 A CN 202010967716A CN 112176770 A CN112176770 A CN 112176770A
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- medical dialyzing
- dialyzing paper
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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
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D1/00—Methods of beating or refining; Beaters of the Hollander type
- D21D1/02—Methods of beating; Beaters of the Hollander type
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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
- D21F11/02—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines of the Fourdrinier type
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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
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/06—Paper forming aids
- D21H21/08—Dispersing agents for fibres
-
- 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
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/06—Paper forming aids
- D21H21/10—Retention agents or drainage improvers
-
- 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
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/16—Sizing or water-repelling agents
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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
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/18—Reinforcing agents
- D21H21/20—Wet strength agents
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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
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/36—Biocidal agents, e.g. fungicidal, bactericidal, insecticidal agents
-
- 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
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- Life Sciences & Earth Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Paper (AREA)
Abstract
The invention discloses a manufacturing method of novel medical dialyzing paper, which comprises the following steps: firstly, beating plant fibers into paper pulp with beating power of 65-75kw, and adding chemical additives; step two, papermaking the paper pulp obtained in the step one by a fourdrinier paper machine, surface sizing by using sizing liquid for water-resistant and surface enhancement treatment, drying and reeling to obtain medical dialyzing paper; the mass percentage of the plant fiber in the medical dialyzing paper is 90-95%. The invention applies glue on the fourdrinier paper machine by adding no sizing agent such as AKD in the pulp, and is manufactured by a surface sizing mode, the product has good toughness, high air permeability, small aperture, good bacteria resistance, good peeling strength with the film, no easy occurrence of sticky paper scrap or paper delamination, wide applicability, direct heat seal use with PE/pet film, cpp film, xpp film, xpa film and the like, and is most mainly capable of being directly heat sealed with PE film, economic and environment-friendly.
Description
Technical Field
The invention belongs to the field of medical instrument packaging materials, and particularly relates to a manufacturing method of novel medical dialyzing paper.
Background
The prior medical dialyzing paper is produced on a fourdrinier machine, and is produced by sizing in pulp AKD (alkyl ketene dimer), and surface sizing is carried out by using PVA (polyvinyl alcohol) and starch to increase the surface strength.
The existing medical dialyzing paper is mainly divided into two types, one type is common dialyzing paper which is mainly compounded with a PE/PET film, and a layer of hot melt adhesive or water adhesive needs to be coated on the paper before heat sealing, so that the qualified peel strength can be achieved; the other type is self-adhesive dialyzing paper which is mainly thermally bonded with a CPP film, and the thermal bonding peel strength with a PE film can not meet the use requirement. PE membrane low cost, CPP membrane is with high costs, mainly with PE membrane heat seal in the market, all need carry out the heat seal after the rubber coating is handled once more to the dialyzing paper, the rubber coating process is great to the environmental impact, and the rubber coating volume is more difficult to control moreover, appears peel strength easily and fluctuates, influences end use.
Disclosure of Invention
The invention aims to solve the technical problems of overcoming the defects of the existing dialyzing paper production, particularly the use process of bag making, solving the problems of the fluctuation of the water absorption of the base paper before surface sizing in the paper making process of the dialyzing paper, avoiding the fluctuation of the sizing amount after the surface sizing of the dialyzing paper, the fluctuation of the peeling force after the heat seal with the film and the like, solving the problems that the water resistance of the paper can reach the sizing effect in pulp by the surface sizing, and solving the adverse effects on drying and production caused by high water content of the paper after the surface sizing, such as the reduction of drying efficiency, the sticking of a drying cylinder, the sticking of a drying blanket drying net and the like, providing a product with stable quality in the manufacturing process, large film peeling strength, no layering of sticky paper scraps and paper sheets, good toughness, high air permeability, small aperture, good bacteria resistance, wide applicability, and being capable of being directly used in heat seal with pe/pet films, cpp films, xpp films, xpa films, the most important is a method for manufacturing a novel medical dialyzing paper which can be directly thermally sealed with a PE membrane.
The technical scheme adopted by the invention for solving the technical problems is as follows: a novel method for manufacturing medical dialyzing paper comprises the following steps: firstly, beating plant fibers into paper pulp with beating power of 65-75kw, and adding cyclic ketene dimer, waterborne polyurethane, polyvinyl alcohol, a strong wetting agent, a dispersing agent, a retention aid and an antibacterial agent;
step two, papermaking the paper pulp obtained in the step one by a fourdrinier paper machine, surface sizing by using sizing liquid for water-resistant and surface enhancement treatment, drying and reeling to obtain medical dialyzing paper; the mass percentage of the plant fiber in the medical dialyzing paper is 90-95%.
In order to optimize the technical scheme, the adopted measures further comprise:
the sizing solution consists of 7-9% of PVA, 2-3% of surface sizing agent and 88-91% of water.
The PVA is one or more of 0899, 1799, 2699, 0388, 1788 and the like, and the weight percentage of the PVA in the medical dialysis paper is 5-10%.
The surface sizing agent is one or more of styrene-acrylic anion surface sizing agent, modified AKD and water repellent agent, and the mass percentage of the surface sizing agent in the medical dialyzing paper after being dried is 0.2-0.5%.
The plant fiber is needle wood fiber and broad leaf wood fiber.
The proportion of the softwood fibers in the total fiber amount is 50% -60%.
In another embodiment, the softwood fibers account for 40% to 50% of the total fiber content.
Compared with the prior art, the manufacturing method of the novel medical dialyzing paper comprises the following steps: firstly, beating plant fibers into paper pulp with beating power of 65-75kw, and adding chemical additives; step two, papermaking the paper pulp obtained in the step one by a fourdrinier paper machine, surface sizing by using sizing liquid for water-resistant and surface enhancement treatment, drying and reeling to obtain medical dialyzing paper; the mass percentage of the plant fiber in the medical dialyzing paper is 90-95%. The invention carries out sizing on the fourdrinier paper machine by adding no sizing agent such as AKD in the pulp and the like, and is made by a surface sizing mode, and the surface sizing function is to ensure that the water resistance of the paper reaches the AKD sizing effect in the pulp and increase the surface strength of the paper; the product has the advantages of good toughness, high air permeability, small pore diameter, good bacteria resistance, good peeling strength with the film, difficult occurrence of paper sticking scraps or paper delamination, wide applicability, direct heat sealing use with PE/pet films, cpp films, xpp films, xpa films and the like, and is most mainly capable of being directly heat sealed with PE films, economic and environment-friendly.
Drawings
FIG. 1 is a graph showing the index of a medical dialyzing paper according to a first embodiment of the present invention;
FIG. 2 shows the index of the medical dialyzing paper according to the second embodiment of the present invention.
Detailed Description
Embodiments of the present invention are described in further detail below with reference to the accompanying drawings.
In a first embodiment, a method for manufacturing a novel medical dialyzing paper comprises the following steps:
firstly, beating plant fibers into paper pulp with beating power of 65-75kw, and adding cyclic ketene dimer, waterborne polyurethane, polyvinyl alcohol, a strong wetting agent, a dispersing agent, a retention aid and an antibacterial agent;
step two, papermaking the paper pulp obtained in the step one by a fourdrinier paper machine, surface sizing by using sizing liquid for water-resistant and surface enhancement treatment, drying and reeling to obtain medical dialyzing paper; the mass percentage of the plant fiber in the medical dialyzing paper is 90-95%.
In the embodiment, the sizing solution comprises 7-9% of PVA, 2-3% of surface sizing agent and 88-91% of water.
In the embodiment, PVA is one or more of 0899, 1799, 2699, 0388, 1788 and the like, and the weight percentage of PVA in medical dialysis paper is 5-10%.
In the embodiment, the surface sizing agent is one or more of styrene-acrylic anion surface sizing agent, modified AKD and water repellent agent, and the mass percentage of the surface sizing agent in the medical dialyzing paper after being dried is 0.2-0.5%.
In the examples, the plant fibers are softwood fibers and hardwood fibers.
In the examples, the proportion of softwood fibres in the total fibre amount is 50-60%.
In the embodiment, 60% of softwood fibers and 40% of hardwood fibers are mixed and defibered uniformly, a disc mill is used for pulping according to 73KW power, 0.3% of wet strength agent is added after the pulping is finished, and the pulp is fully stirred.
And then the pulp is manufactured by a fourdrinier papermaking machine, water resistance and enhancement treatment are carried out by surface sizing, the used sizing solution is 10 percent of PVA (polyvinyl alcohol) and 2 percent of mixed surface sizing agent, the medical dialyzing paper is rolled into a finished product by soft pressing after drying, and the indexes and parameters obtained by testing the medical dialyzing paper are shown in figure 1.
In a second embodiment, a method for manufacturing a novel medical dialyzing paper comprises the following steps:
firstly, beating plant fibers into paper pulp with beating power of 65-75kw, and adding cyclic ketene dimer, waterborne polyurethane, polyvinyl alcohol, a strong wetting agent, a dispersing agent, a retention aid and an antibacterial agent;
step two, papermaking the paper pulp obtained in the step one by a fourdrinier paper machine, surface sizing by using sizing liquid for water-resistant and surface enhancement treatment, drying and reeling to obtain medical dialyzing paper; the mass percentage of the plant fiber in the medical dialyzing paper is 90-95%.
In the embodiment, the sizing solution comprises 7-9% of PVA, 2-3% of surface sizing agent and 88-91% of water.
In the embodiment, PVA is one or more of 0899, 1799, 2699, 0388, 1788 and the like, and the weight percentage of PVA in medical dialysis paper is 5-10%.
In the embodiment, the surface sizing agent is one or more of styrene-acrylic anionic surface sizing agent, modified AKD and water repellent agent, and the mass percent of the surface sizing agent in the medical dialyzing paper is 0.2-0.5%.
In the examples, the plant fibers are softwood fibers and hardwood fibers.
In the examples, the proportion of softwood fibres in the total fibre amount is 40-50%.
In the embodiment, 50% of softwood pulp and 50% of hardwood are mixed and defibered uniformly, a disc mill is used for pulping according to 69KW power, 0.3% of wet strength agent is added after the pulping is finished, and the pulp is fully stirred.
And then the pulp is manufactured by a fourdrinier papermaking machine, water resistance and enhancement treatment are carried out by surface sizing, the used sizing solution is 9 percent of PVA (polyvinyl alcohol) and 3 percent of mixed surface sizing agent, the medical dialyzing paper is rolled into a finished product by soft pressing after drying, and the indexes and parameters obtained by testing the medical dialyzing paper are shown in figure 2.
While the preferred embodiments of the present invention have been illustrated, various changes and modifications may be made by one skilled in the art without departing from the scope of the invention.
Claims (7)
1. A novel method for manufacturing medical dialyzing paper is characterized by comprising the following steps:
firstly, beating plant fibers into paper pulp with beating power of 65-75kw, and adding cyclic ketene dimer, waterborne polyurethane, polyvinyl alcohol, a strong wetting agent, a dispersing agent, a retention aid and an antibacterial agent;
step two, papermaking the paper pulp obtained in the step one by a fourdrinier paper machine, surface sizing by using sizing liquid for water-resistant and surface enhancement treatment, drying and reeling to obtain medical dialyzing paper; the mass percentage of the plant fiber in the medical dialyzing paper is 90-95%.
2. The method for manufacturing a novel medical dialyzing paper according to claim 1, wherein the method comprises the following steps: the sizing solution comprises 7-9% of PVA, 2-3% of surface sizing agent and 88-91% of water.
3. The method for manufacturing a novel medical dialyzing paper according to claim 2, wherein the method comprises the following steps: the PVA is one or more of 0899, 1799, 2699, 0388, 1788 and other types, and the weight percentage of the PVA in medical dialysis paper is 5-10%.
4. The method for manufacturing a novel medical dialyzing paper according to claim 3, wherein: the surface sizing agent is one or more of styrene-acrylic anion surface sizing agent, modified AKD and water repellent agent, and the mass percentage of the dried surface sizing agent in the medical dialyzing paper is 0.2-0.5%.
5. The method for manufacturing a novel medical dialyzing paper according to any one of claims 1 to 4, characterized in that: the plant fiber is needle wood fiber and broad leaf wood fiber.
6. The method for manufacturing a novel medical dialyzing paper according to claim 5, wherein the method comprises the following steps: the proportion of the softwood fibers in the total fiber amount is 50% -60%.
7. The method for manufacturing a novel medical dialyzing paper according to claim 5, wherein: the proportion of the softwood fibers in the total fiber amount is 40% -50%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010967716.4A CN112176770A (en) | 2020-09-15 | 2020-09-15 | Method for manufacturing novel medical dialyzing paper |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010967716.4A CN112176770A (en) | 2020-09-15 | 2020-09-15 | Method for manufacturing novel medical dialyzing paper |
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| CN202010967716.4A Pending CN112176770A (en) | 2020-09-15 | 2020-09-15 | Method for manufacturing novel medical dialyzing paper |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112853817A (en) * | 2021-01-27 | 2021-05-28 | 青岛浩恩医药耗材有限公司 | Method for preparing medicine packaging material from degradable plastic |
| CN112982026A (en) * | 2021-02-05 | 2021-06-18 | 西藏俊富环境恢复有限公司 | Plant fiber-based controllable water permeable material and preparation method thereof |
| CN114622436A (en) * | 2022-04-25 | 2022-06-14 | 浙江科技学院 | Method for enhancing mechanical properties of nano dialysis paper for high-resistance bacteria medical protection in environment-friendly manner |
| CN114875717A (en) * | 2022-04-25 | 2022-08-09 | 浙江科技学院 | Preparation method of degradable high-bacterium-resistance nano dialysis paper for medical protection |
| CN115094676A (en) * | 2022-05-09 | 2022-09-23 | 仙鹤股份有限公司 | High-strength medical packaging paper and preparation method thereof |
| US11840806B2 (en) | 2022-04-25 | 2023-12-12 | Zhejiang University Of Science And Technology | Environmentally-friendly method for enhancing mechanical properties of high antibacterial nano dialysis paper for medical protection |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106012679A (en) * | 2016-06-15 | 2016-10-12 | 浙江凯丰新材料股份有限公司 | Preparation method and material stirring device of self-adhesion type medical paper |
-
2020
- 2020-09-15 CN CN202010967716.4A patent/CN112176770A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106012679A (en) * | 2016-06-15 | 2016-10-12 | 浙江凯丰新材料股份有限公司 | Preparation method and material stirring device of self-adhesion type medical paper |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112853817A (en) * | 2021-01-27 | 2021-05-28 | 青岛浩恩医药耗材有限公司 | Method for preparing medicine packaging material from degradable plastic |
| CN112982026A (en) * | 2021-02-05 | 2021-06-18 | 西藏俊富环境恢复有限公司 | Plant fiber-based controllable water permeable material and preparation method thereof |
| CN114622436A (en) * | 2022-04-25 | 2022-06-14 | 浙江科技学院 | Method for enhancing mechanical properties of nano dialysis paper for high-resistance bacteria medical protection in environment-friendly manner |
| CN114875717A (en) * | 2022-04-25 | 2022-08-09 | 浙江科技学院 | Preparation method of degradable high-bacterium-resistance nano dialysis paper for medical protection |
| WO2023207377A1 (en) * | 2022-04-25 | 2023-11-02 | 浙江科技学院 | Environment-friendly method for enhancing mechanical properties of high-bacterial-resistance nano-dialysis paper for medical protection |
| US11840806B2 (en) | 2022-04-25 | 2023-12-12 | Zhejiang University Of Science And Technology | Environmentally-friendly method for enhancing mechanical properties of high antibacterial nano dialysis paper for medical protection |
| CN115094676A (en) * | 2022-05-09 | 2022-09-23 | 仙鹤股份有限公司 | High-strength medical packaging paper and preparation method thereof |
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Application publication date: 20210105 |