CN109853297A - Medical dialysis body paper and its production method - Google Patents
Medical dialysis body paper and its production method Download PDFInfo
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- CN109853297A CN109853297A CN201910180623.4A CN201910180623A CN109853297A CN 109853297 A CN109853297 A CN 109853297A CN 201910180623 A CN201910180623 A CN 201910180623A CN 109853297 A CN109853297 A CN 109853297A
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Abstract
The invention discloses a kind of medical dialysis body paper and its production methods, including following four step: (1) raw material selects: using bleached chemical needlebush pulpboard and leaf wood pulpboard for raw material；(2) prepared by slurry: spare after size degradation, mashing respectively by bleached chemical needlebush pulpboard and leaf wood pulpboard in step (1)；(3) with slurry: slurry in step (2) being mixed in proportion in mud pit, and adds sizing agent and wet strength agent, send that destroy forebay spare after stirring；(4) it manufactures paper with pulp: by slurry in step (3), it manufactures paper with pulp molding, press section dehydration through wet end on stuff box, fan pump, hydrocyclone, pressurized screen, qualified finished product is made in the processes such as front baking cadre drying, top sizing, the drying of rear drying section, soft press-polishing machine ornamenting, reel machine, rewinding machine.
Description
Technical field
The present invention relates to pharmaceuticals industry specialties more particularly to medical dialysis body paper and its production methods.
Background technique
Medical dialysis body paper is the dialyzing paper base paper of medical industry, and dialyzing paper is mainly used for medical surgical instrument sterilizing
On, it is high density polyethylene (HDPE) on one side, another side is dialyzing paper.In application process, usually dialyzing paper is made by coating, printing
Bag is used as paper plastic bag body paper.
With the fast development of medical industry, rising steadily for the cotton cloth type material that used in the past and cleaning cost is sterilized
The medical instrument production cost that supply center operates with repeatedly also increases severely therewith.In addition the preservation quality of sterile product is by numerous
Factor influences, and all cotton fabric is increased using management difficulty, and many medical institutions use paper plastic bag, all cotton fabric and non-woven fabrics simultaneously
In the sterilization packaging of medical article.And compared to overall plastic packaging bag, the paper bag that medical dialyzing paper is made into is with two big advantages: one
It is protection environment；Second is that safety and sanitation.Paper-plastic packing bag sterilizes after instrument packaging may be implemented, what reduction was directly contacted with instrument
Intermediate link, and overall plastic packaging can not accomplish, therefore, paper-plastic package is safer to patient, while medical staff tears open in instrument
Bao Hou, will not be by the infringement of remaining disinfecting drug possible in bag.
In recent years, with the pay attention to day by day of health care industry to make constant progress with people to hygiene and health, market is to saturating
The quality requirement for analysing paper is higher and higher, the physical index of dialyzing paper, and the requirements of the various aspects such as performance is medical also above common
Pack body paper, such as intensity, aperture, gas permeability and retractility etc.；Resistance bacterium property, heat sealability, gas permeability and removing are imitated simultaneously
The requirements such as fruit are higher.
Have to medical dialysis paper quality claimed below:
(1) there are good paper strength and waterproof performance, it is contemplated that the needs of steam sterilizing have certain wet strength, resistance to
Broken degree and tearability；
(2) there are certain air permeability and good evenness, protective performance will be got well, and prevent the entrance of impurity, microorganism；
(3) fluorescent material cannot be contained, content of ashes wants low, and the chemistry such as brightening agent cannot be arbitrarily added in production process and are helped
Agent；
(4) neutrality will be presented in papery, because dialysis paper bag directly carries out disinfection under steam or ethylene oxide, and right
The content progress strict control of chloride ion, sulfate ion；
(5) the dialysis paper bag of medical equipment is packed when in use, opening when cannot generate paper scrap paper hair, otherwise can shadow
Ring the use of medical instrument, it is desirable that paper has good surface strength.
Summary of the invention
Goal of the invention: that it is an object of the present invention to provide a kind of intensity is good, air permeability is high, resistance bacterium property and heat sealability are good, removing effect
The good medical dialysis body paper of fruit and its production method, to meet quality requirement in paper plastic bag manufacturing process, and environmental protection, health peace
Entirely, paper-plastic packing bag sterilizes after instrument packaging may be implemented, and reduces the intermediate link directly contacted with instrument.
Technical solution: the medical dialysis body paper of the present invention uses bleached chemical needlebush pulpboard and leaf wood pulpboard for raw material,
Dialyse the quantification of 55g/m of body paper2~65g/m2, machine direction tensile strength be 90~95Nmg-1, cross direction tensile strength be 57~
60N·m·g-1；Longitudinal tear index is 9.5~10.5mNm2·g-1, lateral tear index is 10~11.5mNm2·g-1；Burst index is 4.6~6.0kPam2·g-1；Air permeability is 1.4~1.1 μm (Pas)-1。
The production method of medical dialysis body paper, including following four step:
(1) raw material selects: using bleached chemical needlebush pulpboard and leaf wood pulpboard for raw material；
(2) prepared by slurry: by bleached chemical needlebush pulpboard and leaf wood pulpboard in step (1), respectively by size degradation and
Mashing processing；
(3) with slurry: the needlebush slurry after being beaten in step (2) and leaf wood slurry in proportion are sent into mud pit,
And internal sizing agent AKD glue and PPE wet strength agent is added, it is spare to destroy forebay for feeding after stirring；
(4) it manufactures paper with pulp: slurry in forebay will be copied in step (3), through stuff box, fan pump, hydrocyclone, through low pulse
Wet end drainage and formation, press section extrusion dehydration, front baking cadre drying, top sizing, the drying of rear drying portion, soft roll-in on pressurized screen
After ray machine ornamenting, reel machine and rewinding machine, finished product.
In wherein the step of (2), in slurry preparation, softwood pulp selects conical refiner and double disc refiner to combine
Mashing mode, beating degree 42 ° of SR~48 ° SR, weight in wet base 9g~10g；Hardwood pulp selects double disc refiner to be beaten mode, beating degree
25 ° of SR~30 ° SR, weight in wet base 5g~6g.
In with slurry in step (3), softwood pulp and hardwood pulp proportion are 1:3, AKD alkyl ketene dimer sizing agent
Additional amount is 1.2%~1.5% and PPE polyamine polyamide epichlorohydrin resin wet strength agent additional amount is 0.5%~1.0%.
Working principle: by the study found that raw material selection and the selection of chemical assistant have the quality of medical dialysis body paper
Important influence, therefore, this research first from raw material and mashing mode select to consider, pass through experimental study and test point
Analysis, selecting bleached chemical needlebush pulpboard and leaf wood pulpboard is raw material, in order to guarantee medical dialyzing paper have good gas permeability,
The requirement of higher-strength and good evenness, using long fibre shiny beating mode, and strict control beating degree and fibre length.
In order to guarantee dialyse body paper intensity and evenness, it is also necessary to add internal sizing agent, wet strength agent, Cypres and
The chemical assistants such as dispersing agent.
Internal sizing agent mainly has gum rosin, ASK and tri- kinds of AKD, and gum rosin belongs to acid sizing, has to equipment certain
Corrosion, ASK and AKD glue is neutral sizing agent, but ASK latex solution easily hydrolyzes, and unfavorable transport and storage need live emulsification
And control, AKD glue is in neutrality, and it is relatively stable, it is readily transported and stores, and there is no destruction to paper permeability, therefore,
The present invention selects neutrality AKD glue as internal sizing agent.
Wet strength agent is a kind of water solubility, cationic, thermosetting the most commonly used is polyamide Hydrin resin (PAE)
Property resin, be free of formaldehyde quasi polymer, it is non-toxic and tasteless, can manufacture paper with pulp under alkalescence and acid condition in neutrality, the pH value scope of application
Extensively, therefore, the wet strength agent that the present invention selects is PAE.
Cypres mainly include cationic starch, PVA and CMC etc., and CMC is the sodium salt of carboxymethyl cellulose, are had
Alkali solubility and water solubility, aqueous solution toughness can improve the viscosity of solution, and good film-forming property, film strength is big, and water-resistance is good, seep
Permeability is low, reduces the air permeability of paper, is not suitable for high-air-permeability paper Cypres；The viscosity of PVA and cationic starch
It is all lower, it is easy to permeate, and have hydroxyl abundant, good bond strength, but PVA higher cost can be formed with fiber,
Therefore, from the aspect of using effect and production cost two, the present invention, which selects cationic starch and PVA to be mixed in a certain ratio, to be made
It is used as Cypres.
Dispersing agent mainly improves formation of sheet, reduces fiber sinking speed and prevents fleeces coagulation from forming sediment；Dispersing agent master
There are polyethylene glycol oxide (PEO) and guar gum, both dispersing agents can form one layer of cunning without viscous water in fiber surface
Film is closed, so that fiber is dispersed and reduce wadding and gathers, improve formation of sheet；Guar gum is a kind of natural polymer natural plant gum, is easy to get,
At low cost, therefore, the present invention selects guar gum as dispersing agent.
In addition, considering from technology controlling and process and operation: online slurry concentration wants low, and wet end dehydration is slow, and vacuum degree is low, makes
Uniformly, paper formation is good for page dehydration；Temperature control in drying cylinder portion wants low, avoids high temperature force drying and influences the intensity and thoroughly of paper
Gas performance.
The medical dialysis body paper produced by above method, performance indexes are able to satisfy requirement.
The utility model has the advantages that compared with prior art, medical dialysis body paper of the invention, using bleached chemical needlebush pulpboard and
Leaf wood pulpboard is raw material, and paper strength is good, air permeability is high, resistance bacterium property, heat sealability and peeling effect are good, not hair and powder dropping, ring
It protects, safety and sanitation, manufactured paper-plastic packing bag sterilizes after instrument packaging may be implemented, and reduces in directly contacting with medical instrument
Between link, avoid medical staff after instrument is unpacked, infringement of the remaining disinfecting drug to patient in bag.
Detailed description of the invention
Fig. 1 is medical dialysis body paper process flow chart.
Specific embodiment
As shown in Figure 1, the present invention dialyses, the production method of body paper includes following four step:
Step (1) raw material selects: selecting bleached chemical needlebush pulpboard and leaf wood pulpboard is raw material.
The preparation of step (2) slurry: step (1) bleached chemical needlebush pulpboard is sent into No. 1 pulper, adds dilute plain boiled water dilute
It releases to concentration 3%~5%, beating time 15min~20min, 55 DEG C~60 DEG C of temperature, slurry is sent into the good stock tank of needle after size degradation,
Conical refiner and double disc refiner are pumped after mixing evenly, and series connection mashing processing, 42 ° of SR~48 ° of beating degree are carried out to fiber
SR, weight in wet base 9g~10g, slurry is sent into needle and kowtows rear spare storage pool after mashing；By bleached chemical leaf wood pulpboard in step (1)
It send into No. 2 pulpers, dilute plain boiled water is added to be diluted to concentration 3%~5%, beating time 10min~15min, temperature 55 DEG C~60
DEG C, slurry is sent into the good stock tank of broad-leaved after size degradation, and double disc refiner is pumped after stirring and carries out mashing processing, 25 ° of SR of beating degree to fiber
~30 ° of SR, weight in wet base 5g~6g, slurry is sent into broad-leaved and kowtows rear spare storage pool after mashing.
Step (3) is with slurry: needle made from step (2) being kowtowed rear slurry and broad-leaved is kowtowed rear slurry and mixed according to the ratio of 1:3
Conjunction is sent into mud pit, and 1.2%~1.5%AKD alkyl ketene dimer sizing agent and 0.5%~1.0%PPE polyamine is added
Polyamine epichlorohydrin resin wet strength agent, it is spare to destroy forebay for feeding after being stirred.
Step (4) is manufactured paper with pulp: step (3) is copied into the slurry that forebay is come, after being pumped to flow and the pressure that stuff box stablizes slurry,
After fan pump and enriched water mixed diluting to 0.4%~0.5% concentration, impurity in slurry is removed through hydrocyclone, is anti-
Only fleeces coagulation forms sediment, and in fan pump entrance addition guar gum as dispersing agent, evenly spreads out fiber, guar gum dosage is
0~0.1%；Online drainage and formation is sieved through low pulse, after press section extrusion dehydration, moisture content is evaporated into front baking cadre, is
Guarantee that paper permeability is good, at 80 DEG C~90 DEG C, subsequent dryer temperature is gradually increased first group of dryer temperature control of front baking cadre
To 110 DEG C~120 DEG C；Front baking cadre paper enters Cypres progress top sizing processing out, improves the surface strength of paper
And water repelling property, Cypres select cationic starch to add PVA glue, match as 1:6, dosage is 0.5%~1.0%.Surface
The mass dryness fraction that the dry evaporation moisture content in drying portion is suitble to paper after paper after sizing enters, through four-roller soft press-polishing machine to the surface of paper
Ornamenting processing, further increases the surface strength of paper, hair and powder dropping phenomenon when reducing paper removing, most afterwards through reel machine, rewinding
The product that mechanism must conform to quality requirements.
According to above method, trial-production three is quantitatively respectively 55g/m2、60g/m2、65g/m2Each four kinds of experimental products, it is real
Under applying for example:
Embodiment 1 manufactures experimently quantification of 55g/m2Four kinds of experimental products A1, A2, A3 and A4:
The first product A1, needle kowtows rear slurry and broad-leaved kowtows rear slurry ratio 1:3, adds 1.2%AKD sizing agent,
0.5%PPE wet strength agent does not add guar gum dispersing agent, operation concentration 0.4%, Cypres dosage 0.5%；
Second of product A2, needle kowtows rear slurry and broad-leaved kowtows rear slurry ratio 1:3, adds 1.3%AKD sizing agent,
0.6%PPE wet strength agent, 0.05% guar gum dispersing agent, operation concentration 0.45%, Cypres dosage 0.7%；
The third product A3, needle kowtows rear slurry and broad-leaved kowtows rear slurry ratio 1:3, adds 1.4%AKD sizing agent,
0.5%~0.8%PPE wet strength agent, 0.10% guar gum dispersing agent, operation concentration 0.5%, Cypres dosage 0.8%；
4th kind of product A4, needle kowtows rear slurry and broad-leaved kowtows rear slurry ratio 1:3, adds 1.5%AKD sizing agent,
1.0%PPE wet strength agent, 0.10% guar gum dispersing agent, operation concentration 0.5%, Cypres dosage 1.0%.
According to the above experiment proportion, this 4 kinds of quantitative medical package body paper is made, through provincial pulping and paper-making key lab
Inspection center's detection, quality index are as shown in table 1.
1 medical package original paper quality index contrast table (55g/m of table2)
Embodiment 2: quantification of 60g/m is manufactured experimently2Four kinds of experimental products B1, B2, B3 and B4:
The first product B1, needle kowtows rear slurry and broad-leaved kowtows rear slurry ratio 1:3, adds 1.2%AKD sizing agent,
0.5%PPE wet strength agent does not add guar gum dispersing agent, operation concentration 0.4%, Cypres dosage 0.5%；
Second of product B2, needle kowtows rear slurry and broad-leaved kowtows rear slurry ratio 1:3, adds 1.3%AKD sizing agent,
0.6%PPE wet strength agent, 0.05% guar gum dispersing agent, operation concentration 0.45%, Cypres dosage 0.7%；
The third product B3, needle kowtows rear slurry and broad-leaved kowtows rear slurry ratio 1:3, adds 1.4%AKD sizing agent,
0.5%~0.8%PPE wet strength agent, 0.10% guar gum dispersing agent, operation concentration 0.5%, Cypres dosage 0.8%；
4th kind of product B4, needle kowtows rear slurry and broad-leaved kowtows rear slurry ratio 1:3, adds 1.5%AKD sizing agent,
1.0%PPE wet strength agent, 0.10% guar gum dispersing agent, operation concentration 0.5%, Cypres dosage 1.0%.
According to the above experiment proportion, this 4 kinds of quantitative medical package body paper is made, through provincial pulping and paper-making key lab
Inspection center's detection, quality index are as shown in table 2.
2 medical package original paper quality index contrast table (60g/m of table2)
Embodiment 3: quantification of 65g/m is manufactured experimently2Four kinds of experimental products C1, C2, C3 and C4:
The first products C 1, needle kowtows rear slurry and broad-leaved kowtows rear slurry ratio 1:3, adds 1.2%AKD sizing agent,
0.5%PPE wet strength agent does not add guar gum dispersing agent, operation concentration 0.4%, Cypres dosage 0.5%；
Second of products C 2, needle kowtows rear slurry and broad-leaved kowtows rear slurry ratio 1:3, adds 1.3%AKD sizing agent,
0.6%PPE wet strength agent, 0.05% guar gum dispersing agent, operation concentration 0.45%, Cypres dosage 0.7%；
The third products C 3, needle kowtows rear slurry and broad-leaved kowtows rear slurry ratio 1:3, adds 1.4%AKD sizing agent,
0.5%~0.8%PPE wet strength agent, 0.10% guar gum dispersing agent, operation concentration 0.5%, Cypres dosage 0.8%；
4th kind of products C 4, needle kowtows rear slurry and broad-leaved kowtows rear slurry ratio 1:3, adds 1.5%AKD sizing agent,
1.0%PPE wet strength agent, 0.10% guar gum dispersing agent, operation concentration 0.5%, Cypres dosage 1.0%.
According to the above experiment proportion, this 4 kinds of quantitative medical package body paper is made, through provincial pulping and paper-making key lab
Inspection center's detection, quality index are as shown in table 3.
3 medical package original paper quality index contrast table (65g/m of table2)
By table 1, table 2 and table 3 it is found that medical package body paper of the present invention zeeil tensile strength Z in length and breadth, be all larger than import standard
Specified value, for longitudinal and tear index also greater than import index value, burst index is higher than import index value, and the above numerical value shows this
The intensity of invention product is good；1.4~1.1 μm of product of the present invention air permeability (Pas)-1, also greater than as defined in import standard value
Minimum shows that product of the present invention air permeability is good, meets the product packaging sterilization requirement；The ash content of product of the present invention is lower than
Imported product specified value, while the chloride ion of the product and sulfate ion content are below imported product specified value, show this
Product meets hygienic requirements.
Therefore, this project invention embodiment is feasible, and medical package body paper produced by the present invention fully meets medical treatment
Perform the operation paper-plastic packing bag quality requirement, and paper-plastic packing bag medical device package may be implemented after sterilize, avoid medical care people
Member is after medical surgical instrument is unpacked, infringement of the remaining disinfecting drug to patient in bag.
Claims (6)
1. a kind of medical dialysis body paper, it is characterised in that: use bleached chemical needlebush pulpboard and leaf wood pulpboard for raw material, institute
State the dialysis quantification of 55g/m of body paper product2~65g/m2, machine direction tensile strength is 90~95Nmg-1, cross direction tensile strength
For 57~60Nmg-1；Longitudinal tear index is 9.5~10.5mNm2·g-1, lateral tear index be 10~
11.5mN·m2·g-1；Burst index is 4.6~6kPam2·g-1；Air permeability is 1.4~1.1 μm (Pas)-1。
2. a kind of production method of medical dialysis body paper, it is characterised in that: including following four step:
(1) raw material selects: using bleached chemical needlebush pulpboard and leaf wood pulpboard for raw material；
(2) prepared by slurry: by bleached chemical needlebush pulpboard and leaf wood pulpboard in step (1), passing through size degradation and mashing respectively
Processing；
(3) with slurry: the needlebush slurry after being beaten in step (2) and leaf wood slurry in proportion being sent into mud pit, and added
Enter internal sizing agent AKD glue and PPE wet strength agent, it is spare to destroy forebay for feeding after stirring；
(4) it manufactures paper with pulp: slurry in forebay will be copied in step (3), through stuff box, fan pump, hydrocyclone, through low pulse
Wet end drainage and formation, press section extrusion dehydration, front baking cadre drying, top sizing, the drying of rear drying portion, soft roll calendar on sieve
After ornamenting, reel machine and rewinding machine, finished product.
3. the production method of medical dialysis body paper according to claim 2, it is characterised in that: in step (2), slurry preparation
In, the mashing mode that softwood pulp selects conical refiner and double disc refiner to combine, 42 ° of SR~48 ° SR of beating degree, weight in wet base
9g~10g；Hardwood pulp selects double disc refiner to be beaten mode, beating degree 25 ° of SR~30 ° SR, weight in wet base 5g~6g.
4. the production method of medical dialysis body paper according to claim 2, it is characterised in that: in slurry in step (3),
Softwood pulp and hardwood pulp proportion are 1:3, and AKD alkyl ketene dimer sizing agent additional amount is 1.2%~1.5% and PPE
Polyamine polyamide epichlorohydrin resin wet strength agent additional amount is 0.5%~1.0%.
5. the production method of medical dialysis body paper according to claim 2, it is characterised in that: during step (4) is manufactured paper with pulp, slurry
It is 0.4%~0.5% by dilution online concentration, front baking cadre's dryer temperature is 80 DEG C~90 DEG C, rear drying portion dryer temperature
It is 110 DEG C~120 DEG C.
6. the production method of medical dialysis body paper according to claim 2, it is characterised in that: step is manufactured paper with pulp in (4), is selected
Cypres cationic starch adds PVA glue, matches as 1:6, and dosage is 0.5%~1.0%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910180623.4A CN109853297A (en) | 2019-03-11 | 2019-03-11 | Medical dialysis body paper and its production method |
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| CN201910180623.4A CN109853297A (en) | 2019-03-11 | 2019-03-11 | Medical dialysis body paper and its production method |
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ID=66900378
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110565425A (en) * | 2019-09-12 | 2019-12-13 | 华邦古楼新材料有限公司 | Production equipment and production process of high-strength dialysis paper |
| CN111254732A (en) * | 2020-03-04 | 2020-06-09 | 广东通力定造股份有限公司 | Production method of fluorine-free oil-proof paper |
| CN111608011A (en) * | 2020-04-29 | 2020-09-01 | 仙鹤股份有限公司 | Preparation method of high-permeability and bacterium-resistant type dialysis base paper |
| CN111691233A (en) * | 2020-05-28 | 2020-09-22 | 仙鹤股份有限公司 | Preparation method of low-smoothness medical packaging base paper |
| CN112501942A (en) * | 2020-11-12 | 2021-03-16 | 金华盛纸业（苏州工业园区）有限公司 | Medical dialyzing paper and production method thereof |
| CN114525702A (en) * | 2021-12-28 | 2022-05-24 | 安徽华邦古楼新材料有限公司 | Production method of universal medical dialyzing paper |
| CN116732821A (en) * | 2023-07-03 | 2023-09-12 | 山东仁丰特种材料股份有限公司 | Method for producing gluing type medical dialysis base paper by using fourdrinier vat paper machine |
| CN116876257A (en) * | 2023-08-10 | 2023-10-13 | 华邦古楼新材料有限公司 | Heat-sealing self-adhesive high-strength medical dialysis paper and processing method thereof |
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| CN108660859A (en) * | 2018-04-23 | 2018-10-16 | 华邦古楼新材料有限公司 | Medical package dialyzing paper and its manufacturing method |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110565425A (en) * | 2019-09-12 | 2019-12-13 | 华邦古楼新材料有限公司 | Production equipment and production process of high-strength dialysis paper |
| CN110565425B (en) * | 2019-09-12 | 2021-08-06 | 华邦古楼新材料有限公司 | Production equipment and production process of high-strength dialysis paper |
| CN111254732A (en) * | 2020-03-04 | 2020-06-09 | 广东通力定造股份有限公司 | Production method of fluorine-free oil-proof paper |
| CN111608011A (en) * | 2020-04-29 | 2020-09-01 | 仙鹤股份有限公司 | Preparation method of high-permeability and bacterium-resistant type dialysis base paper |
| CN111608011B (en) * | 2020-04-29 | 2022-03-11 | 仙鹤股份有限公司 | Preparation method of high-permeability and bacterium-resistant type dialysis base paper |
| CN111691233A (en) * | 2020-05-28 | 2020-09-22 | 仙鹤股份有限公司 | Preparation method of low-smoothness medical packaging base paper |
| CN112501942A (en) * | 2020-11-12 | 2021-03-16 | 金华盛纸业（苏州工业园区）有限公司 | Medical dialyzing paper and production method thereof |
| CN112501942B (en) * | 2020-11-12 | 2022-11-11 | 金东纸业（江苏）股份有限公司 | Medical dialyzing paper and production method thereof |
| CN114525702A (en) * | 2021-12-28 | 2022-05-24 | 安徽华邦古楼新材料有限公司 | Production method of universal medical dialyzing paper |
| CN116732821A (en) * | 2023-07-03 | 2023-09-12 | 山东仁丰特种材料股份有限公司 | Method for producing gluing type medical dialysis base paper by using fourdrinier vat paper machine |
| CN116876257A (en) * | 2023-08-10 | 2023-10-13 | 华邦古楼新材料有限公司 | Heat-sealing self-adhesive high-strength medical dialysis paper and processing method thereof |
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Application publication date: 20190607 |