CN110396854B - High-transparency medical adhesive tape base material - Google Patents
High-transparency medical adhesive tape base material Download PDFInfo
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- CN110396854B CN110396854B CN201910719866.0A CN201910719866A CN110396854B CN 110396854 B CN110396854 B CN 110396854B CN 201910719866 A CN201910719866 A CN 201910719866A CN 110396854 B CN110396854 B CN 110396854B
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- 239000000463 material Substances 0.000 title claims abstract description 84
- 239000002390 adhesive tape Substances 0.000 title claims abstract description 43
- 239000000835 fiber Substances 0.000 claims abstract description 208
- 238000004537 pulping Methods 0.000 claims abstract description 65
- 238000002844 melting Methods 0.000 claims abstract description 48
- 229920001131 Pulp (paper) Polymers 0.000 claims abstract description 47
- 229920000728 polyester Polymers 0.000 claims abstract description 46
- 239000002131 composite material Substances 0.000 claims abstract description 25
- 238000002156 mixing Methods 0.000 claims abstract description 23
- 230000008018 melting Effects 0.000 claims abstract description 18
- 230000035699 permeability Effects 0.000 claims abstract description 13
- 239000011122 softwood Substances 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims description 26
- 239000000758 substrate Substances 0.000 claims description 24
- 239000003795 chemical substances by application Substances 0.000 claims description 16
- 238000004513 sizing Methods 0.000 claims description 15
- 230000007935 neutral effect Effects 0.000 claims description 14
- 238000010009 beating Methods 0.000 claims description 12
- 238000002360 preparation method Methods 0.000 claims description 7
- 230000037303 wrinkles Effects 0.000 claims description 7
- 238000010521 absorption reaction Methods 0.000 claims description 5
- 239000002344 surface layer Substances 0.000 claims description 5
- 239000003292 glue Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 21
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 9
- 239000004744 fabric Substances 0.000 abstract description 5
- 230000036541 health Effects 0.000 abstract description 2
- 230000006872 improvement Effects 0.000 abstract description 2
- 239000012209 synthetic fiber Substances 0.000 abstract description 2
- 229920002994 synthetic fiber Polymers 0.000 abstract description 2
- 238000001035 drying Methods 0.000 description 28
- 239000000047 product Substances 0.000 description 14
- 238000004804 winding Methods 0.000 description 9
- 238000012545 processing Methods 0.000 description 7
- 238000009826 distribution Methods 0.000 description 6
- 238000007602 hot air drying Methods 0.000 description 4
- 238000011002 quantification Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000004026 adhesive bonding Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 3
- 238000003490 calendering Methods 0.000 description 3
- 238000009960 carding Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000005498 polishing Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000001153 anti-wrinkle effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- D21H15/00—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution
- D21H15/02—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution characterised by configuration
- D21H15/10—Composite 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
- D21H21/14—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
-
- 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
Abstract
The invention discloses a high-transparency medical adhesive tape base material which comprises the following components: wood pulp fibers, polyester fibers, low melting fibers; the wood pulp fiber composite material comprises, by weight, 40-60 parts of wood pulp fibers, 50-30 parts of polyester fibers and 9-9.5 parts of low-melting fibers; the wood pulp fibers are softwood pulp fibers, and the length of the fibers is 2-5 mm; selecting polyester fibers with the fineness of 0.5D-1D and the length of 4-10 mm as the polyester fibers; the tensile strength is 0.4-1.3 KN/m, the soft and soft thickness is more than 0.08 mm, the fiber is homogeneous, and the air permeability is higher than 550L/m2S. The high-permeability medical adhesive tape base material is prepared by mixing and pulping pure plant fibers and synthetic fibers, is formed by bonding and melting between fibers, is simple to process, has low manufacturing cost, is a substitute of the existing medical cloth base material and perforated PE base material, and has huge demand gaps and extremely wide market prospect along with the continuous improvement of human health demands.
Description
Technical Field
The invention belongs to the technical field of medical adhesive tape base materials, and particularly relates to a high-transparency medical adhesive tape base material and a preparation method thereof.
Background
The medical adhesive tape base material is a basic material for manufacturing the medical adhesive tape, the existing medical adhesive tape base material has more problems, the base material has the problems of poor air permeability, difficult tearing, low skin-feel comfort level and the like, punching treatment is needed in the processing process of the medical adhesive tape, special sawtooth processing is carried out on the edge of the base material, and the processing process and the production process are complex. The existing base material main body material is difficult to degrade and has poor environmental protection property. The polyester fiber has hydrophobicity, and the situations such as floating flocculation and the like easily occur in water, and the situation is more serious when the proportion is higher.
The application numbers are: chinese patent CN201610359698.5 discloses one of: a breathable medical tape substrate and a method of making the same, the method comprising the steps of: 1) carrying out mild pulping treatment on wood pulp fibers, improving the pulp degree by 2-8 DEG SR, mixing the pulp with polyester fibers and water-soluble fibers, and adding a wet strength agent into the mixed fibers; 2) making the mixed fibers by a cylinder mould or inclined wire paper machine, performing enhancement treatment by surface sizing, drying and coiling to obtain a finished product; wherein, the wood pulp fiber, the polyester fiber and the water-soluble fiber account for the fiber in the breathable medical adhesive tape paper by mass percent respectively: 50-75%, 20-45% and 1-5%, wherein the sum of the mass percentages of the components is 100%. Compared with the adhesive tape base material in the prior art, the medical adhesive tape base material prepared by the method has the characteristics of good flexibility, high bulk, high air permeability, good uniformity and easy tearing. However, in this patent, the raw material of the tape base material is wood pulp fiber and chemical fiber, and the chemical fiber is not easily degraded. In the method, the wood pulp fiber and the chemical fiber are mixed and manufactured, the binding force of the two fibers is poor, the strength of the base material is subjected to surface gluing after being molded by manufacturing, and the glue layer is positioned on the surface layer of the base material, so that the comfort level is reduced, the anti-sensitivity performance is poor, and the environmental protection performance is poor; the difference between the longitudinal and transverse tearing strength and the tensile strength is large, the difference between the smoothness of the front surface and the smoothness of the back surface is large, the manufacturing process is complicated and difficult to operate, the process parameters in the gluing process are difficult to control, the product stability is poor, the equipment investment cost is high, and the manufacturing cost of the final product is high.
Disclosure of Invention
The first technical problem to be solved by the invention is to provide a high-permeability medical adhesive tape base material which has the advantages of good strength, good flexibility, high air permeability, good elasticity, lightness, easy seepage prevention, high flatness, strong wrinkle resistance and strong environmental protection.
The second technical problem to be solved by the invention is to provide a manufacturing method of a high-transparency medical adhesive tape base material, and the high-transparency medical adhesive tape base material prepared by the method has the advantages of low ration, good strength, softness, looseness, thickness, uniform fiber, high air permeability, strong wrinkle resistance, easiness in tearing, uniform adhesive absorption and the like.
In order to solve the first technical problem, the invention adopts the following technical scheme:
a high-permeability medical adhesive tape base material comprises the following components of wood pulp fibers, polyester fibers, low-melting-point fibers, AKD neutral sizing liquid and wet strength agent liquid.
Preferably, the components comprise, by weight, 40-60 parts of wood pulp fibers, 50-30 parts of polyester fibers, 9-9.5 parts of low-melting fibers, 0.5-1 part of AKD neutral sizing solution with the weight of 0.5% of fibers and 0.5-1 part of wet strength agent solution.
Preferably, the wood pulp fiber, the polyester fiber, the low-melting fiber, the AKD neutral sizing liquid and the wet strength agent liquid in the adhesive tape base material are uniformly distributed.
Preferably, the wood pulp fibers are softwood pulp fibers, and the fiber length is 2-5 mm; the polyester fiber is selected from the polyester fibers with the fineness of 0.5D-1D and the length of 4-10 mm.
Preferably, the low-melting fiber is one or a mixture of two of ES low-melting bicomponent composite fiber or low-melting PVA fiber.
Preferably, the ES low-melting-point bicomponent composite fiber is an ES low-melting-point bicomponent composite fiber with the fineness of 1.5D-2D, the length of 38 mm-42 mm and the melting point of 130-135 ℃; the low-melting PVA fiber is selected from low-melting PVA fibers with the fineness of 0.5D-1D, the length of 4-10 mm and the melting point of 50-90 ℃.
In order to solve the second technical problem, the invention adopts the following technical scheme:
a preparation method of a high-transparency medical adhesive tape base material comprises a pulping step, a papermaking step and a drying step.
Preferably, the pulping step further comprises a pulping step, and pulping the disintegrated wood pulp by a double-disc refiner to obtain pulp, wherein the pulping concentration is 2-2.5%, the beating degree is 18-23 DEG SR, and the wet weight is 10-12 g.
Preferably, the pulping step further comprises a pulping step, wherein the wood pulp fiber pulp obtained in the pulping step is mixed with polyester fiber and low-melting fiber for pulping to obtain finished pulp;
in the pulping step, the pulping concentration is 2.5-3%, the beating degree is 15-20 DEG SR, and the wet weight is 12-15 g.
Preferably, the pulping step comprises a material mixing step, wherein 10-20 kg of AKD neutral sizing liquid and 15-30 kg of wet strength agent liquid are added into a pulping pond and uniformly mixed.
Preferably, in the papermaking step, the slurry obtained in the pulping step is sent to a fourdrinier papermaking machine through a flow system for papermaking, wherein the parameters of the fourdrinier papermaking machine are as follows: the fourdrinier machine type is 1092-2400 mm, the papermaking quantitative is 20-100 g/square meter, and the vehicle speed is 50-200 m/min.
Preferably, in the drying step, the base material after being made into paper passes through a first drying cylinder, a second drying cylinder and a hot air drying box in sequence to be dried in a three-level manner, wherein the temperature of the first drying cylinder is 80-100 ℃, and the moisture of the paper leaves is 15-20%; the temperature of the second drying cylinder is 90-100 ℃, and the moisture of the paper sheet is 10-15%; the temperature of the hot air oven is 130-135 ℃, and the moisture of the paper output sheet is 4-6%.
After the technical scheme is adopted, compared with the prior art, the invention has the following advantages:
1. the high-permeability medical adhesive tape base material prepared by the method is prepared by processing pure plant fiber and synthetic fiber mixed pulp and making the mixture by a paper machine, has moderate strength, tensile strength of 0.4-1.3 KN/m, soft softness and thickness of more than 0.08 mm, homogeneous fiber and air permeability of more than 550L/m2S, strong anti-wrinkle property, easy tearing, uniform glue absorption, comfortable skin feel and the like.
2. The high-transparency medical adhesive tape base material prepared by the method has the advantages of low quantification, light weight per unit area, cost reduction and the like.
3. The surface gluing and reinforcing treatment is not needed in the papermaking process, the fibers are directly formed in one step through adhesion and melting adhesion, the processing technology is simple, the manufacturing cost is low, the fabric is a substitute of the existing medical fabric base material and the perforated PE base material, the demand gap is huge along with the continuous improvement of the human health demand, and the market prospect is very wide.
Drawings
FIG. 1 is a process flow chart of a method for preparing a high-transparency medical tape substrate according to the present invention;
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
A high-transparency medical adhesive tape base material comprises the following components of wood pulp fibers, polyester fibers, low-melting fibers, AKD neutral sizing liquid and a wet strength agent, wherein the low-melting fibers are a mixture of ES low-melting two-component composite fibers and low-melting PVA fibers; the components are uniformly distributed and bonded together by bonding and melting between the fibers. The ES fiber is a bi-component skin-core structure composite fiber, the skin tissue has low melting point and good flexibility, the core tissue has high melting point and high strength, after heat treatment, one part of the skin is melted to play a bonding role, and the rest of the skin still keeps a fiber state and has the characteristic of small heat shrinkage rate. The fiber is especially suitable for producing sanitary material, heat insulating stuffing, filtering material, etc. by hot air penetrating process.
The components comprise the following components in parts by weight: 40 parts of wood pulp fiber, 50 parts of polyester fiber, 5 parts of ES low-melting bicomponent composite fiber and 5 parts of low-melting PVA fiber. Wherein the wood pulp fiber is softwood pulp fiber with the fiber length of 2-5 mm. The polyester fiber is selected from the polyester fibers with the fineness of 0.5D-1D and the length of 4-10 mm. The ES low-melting-point bicomponent composite fiber is selected from the ES low-melting-point bicomponent composite fiber with the fineness of 1.5D-2D, the length of 38 mm and the melting point of 130 ℃. The low-melting PVA fiber is selected from low-melting PVA fibers with the fineness of 0.5D-1D, the length of 4-10 mm and the melting point of 80-90 ℃.
As shown in figure 1, the preparation method of the high-transparency medical adhesive tape base material comprises a pulping step, a papermaking step, a drying step, a winding step and a rewinding step.
A. The pulping step comprises a pulping step, a pulping step and a mixing step.
(1) And a pulping step, pulping the disintegrated wood pulp by a double-disc refiner to obtain pulp, wherein the pulping concentration is 2-2.5%, the beating degree is 20-23 DEG SR, and the wet weight is 10-12 g.
(2) And pulping, namely mixing and pulping the pulp fibers subjected to pulping treatment with polyester fibers, ES low-melting bicomponent composite fibers and low-melting PVA fibers to prepare finished pulp. In the pulping step, the pulping concentration is 2.5-3%, the beating degree is 18-20 DEG SR, and the wet weight is 12-13 g.
Through the pulping step, the mixing uniformity of the wood pulp fibers, the polyester fibers, the ES low-melting-point double-component composite fibers and the low-melting-point PVA fibers can be improved, the fiber surface layer can be fluffed, the bonding degree between the fibers is improved, and the strength of the produced base material is high.
(3) And mixing materials, namely adding 10-20 kg of AKD neutral sizing liquid per ton of pulp forming pool and 15-30 kg of wet strength agent liquid per ton of pulp forming pool, uniformly mixing, and fully mixing and reacting the AKD neutral sizing liquid and the wet strength agent liquid with the pulp forming pool.
B. And a papermaking step, namely conveying the finished pulp obtained in the pulping step to a fourdrinier papermaking machine through a flow system for papermaking, wherein the parameters of the papermaking machine are as follows: the papermaking machine type is 1300-1800 mm, the papermaking quantitative range is 20-60 g/square meter, and the vehicle speed is 80-150 m/min.
The approach system comprises a fore-copying pool, a concentration regulator, a high-level tank, a white water tower, a rotor screen and a pulp stabilizing tank which are arranged in sequence. The formed pulp passes through the drifting system, and the concentration, the flow and the stability of the formed pulp during papermaking can be ensured by the drifting system, so that the base material after papermaking is more uniform and consistent. Wherein, the rotor screen has the effect of purifying into thick liquid and carding fibre for the distribution of fibre is more even in the substrate after making paper, and the substrate quality is better. When the fourdrinier papermaking machine is used for papermaking, the distribution of fibers is more uniform, and the performance consistency of the papermaking base material in all directions is good.
C. Drying, namely, passing the manufactured base material through a first drying cylinder, a second drying cylinder and a hot air drying box in sequence to perform three-level drying, wherein the temperature of the first drying cylinder is 80-100 ℃, and the moisture of the paper sheet is 15-20%; the temperature of the second drying cylinder is 90-100 ℃, and the moisture of the paper sheet is 10-15%; the temperature of the hot air oven is 130-135 ℃, and the moisture of the paper output sheet is 4-6%.
When the substrate passes through first dryer, second dryer, dry the substrate from two sides respectively, improve the two sides uniformity of substrate. In an oven with higher temperature, the wood pulp fiber, the polyester fiber, the ES low-melting-point double-component composite fiber and the low-melting-point PVA fiber are partially melted, and the fibers are bonded, melted and bonded for forming, so that the bonding degree of the wood pulp fiber and the polyester fiber is enhanced, and the strength of the base material is improved.
D. A coiling step, namely coiling and forming the dried base material after soft press polishing; the surface flatness of the substrate can be effectively improved by rolling the soft roller and the hard roller in the soft calendaring.
E. And rewinding, namely performing edge cutting, waste removing and other treatment on the base material wound in the winding step, and winding to obtain a finished product.
The high-transparency medical adhesive tape base material prepared by the technical scheme has the following indexes:
the high-transparency medical adhesive tape base material prepared by the formula and the method is moderate in use strength, optimal in air permeability and good in wrinkle resistance, experience reports of 1000 volunteers in two hours show that 713 volunteers consider that the comfort level of the product is optimal, and the product performance is optimal.
Example 2
A high-transparency medical adhesive tape base material comprises the following components of wood pulp fiber, polyester fiber, low-melting fiber, AKD neutral sizing liquid and a wet strength agent, wherein the low-melting fiber is ES low-melting two-component composite fiber; the components are uniformly distributed and bonded together by bonding and melting between the fibers. The ES fiber is a bi-component skin-core structure composite fiber, the skin tissue has low melting point and good flexibility, the core tissue has high melting point and high strength, after heat treatment, one part of the skin is melted to play a bonding role, and the rest of the skin still keeps a fiber state and has the characteristic of small heat shrinkage rate. The fiber is especially suitable for producing sanitary material, heat insulating stuffing, filtering material, etc. by hot air penetrating process.
The components comprise the following components in parts by weight: 60 parts of wood pulp fiber, 30 parts of polyester fiber and 10 parts of ES low-melting-point bicomponent composite fiber. Wherein the wood pulp fiber is softwood pulp fiber with the fiber length of 2-5 mm. The polyester fiber is selected from the polyester fibers with the fineness of 0.5D-1D and the length of 4-10 mm. The ES low-melting-point bicomponent composite fiber is selected from the ES low-melting-point bicomponent composite fiber with the fineness of 1.5D-2D, the length of 38 mm and the melting point of 130 ℃.
As shown in figure 1, the preparation method of the high-transparency medical adhesive tape base material comprises a pulping step, a papermaking step, a drying step, a winding step and a rewinding step.
A. The pulping step comprises a pulping step, a pulping step and a mixing step.
(1) And a pulping step, pulping the disintegrated wood pulp by a double-disc refiner to obtain pulp, wherein the pulping concentration is 2-2.5%, the beating degree is 20-23 DEG SR, and the wet weight is 10-12 g.
(2) And pulping, namely mixing and pulping the pulp fibers subjected to pulping treatment, polyester fibers and ES low-melting-point bicomponent composite fibers to prepare finished pulp. In the pulping step, the pulping concentration is 2.5-3%, the beating degree is 16-20 DEG SR, and the wet weight is 13-15 g.
Through the pulping step, the mixing uniformity of the wood pulp fibers, the polyester fibers, the ES low-melting-point double-component composite fibers and the low-melting-point PVA fibers can be improved, the fiber surface layer can be fluffed, the bonding degree between the fibers is improved, and the strength of the produced base material is high.
(3) And mixing materials, namely adding 10-20 kg of AKD neutral sizing liquid per ton of pulp forming pool and 15-30 kg of wet strength agent liquid per ton of pulp forming pool, uniformly mixing, and fully mixing and reacting the AKD neutral sizing liquid and the wet strength agent liquid with the pulp forming pool.
B. And a papermaking step, namely conveying the finished pulp obtained in the pulping step to a fourdrinier papermaking machine through a flow system for papermaking, wherein the parameters of the papermaking machine are as follows: the papermaking machine type is 1092-1800 mm, the papermaking quantitative is 20-60 g/square meter, and the vehicle speed is 80-150 m/min.
The approach system comprises a fore-copying pool, a concentration regulator, a high-level tank, a white water tower, a rotor screen and a pulp stabilizing tank which are arranged in sequence. The formed pulp passes through the drifting system, and the concentration, the flow and the stability of the formed pulp during papermaking can be ensured by the drifting system, so that the base material after papermaking is more uniform and consistent. Wherein, the rotor screen has the effect of purifying into thick liquid and carding fibre for the distribution of fibre is more even in the substrate after making paper, and the substrate quality is better. When the fourdrinier papermaking machine is used for papermaking, the distribution of fibers is more uniform, and the performance consistency of the papermaking base material in all directions is good.
C. Drying, namely, passing the manufactured base material through a first drying cylinder, a second drying cylinder and a hot air drying box in sequence to perform three-level drying, wherein the temperature of the first drying cylinder is 80-100 ℃, and the moisture of the paper sheet is 15-20%; the temperature of the second drying cylinder is 90-100 ℃, and the moisture of the paper sheet is 10-15%; the temperature of the hot air oven is 130-135 ℃, and the moisture of the paper output sheet is 4-6%.
When the substrate passes through first dryer, second dryer, dry from two faces to the substrate respectively, improve the two sides uniformity of substrate. In an oven with higher temperature, the wood pulp fiber, the polyester fiber and the ES low-melting-point bicomponent composite fiber are adhered, melted and adhered to form, so that the combination degree of the wood pulp fiber, the polyester fiber and the ES low-melting-point bicomponent composite fiber is enhanced, and the strength of the base material is improved.
D. A coiling step, namely coiling and forming the dried base material after soft press polishing; the surface flatness of the substrate can be effectively improved by rolling the soft roller and the hard roller in the soft calendaring.
E. And rewinding, namely performing edge cutting, waste removing and other treatment on the base material wound in the winding step, and winding to obtain a finished product.
The high-transparency medical adhesive tape base material prepared by the technical scheme has the following indexes:
the high-transparency medical adhesive tape base material prepared by the formula and the method is moderate in use strength, good in air permeability and good in wrinkle resistance, experience reports of 1000 volunteers in two hours show that 115 volunteers consider the product to be the best in comfort level, the product is the lowest in quantification, the price of the adhesive tape in unit area is the lowest, and the cost performance is high.
Example 3
A high-permeability medical adhesive tape base material comprises the following components of wood pulp fibers, polyester fibers, low-melting PVA fibers, AKD neutral sizing liquid and a wet strength agent, wherein the components are uniformly distributed and are bonded together through bonding and melting among the fibers.
The components comprise the following components in parts by weight: 50 parts of wood pulp fiber, 40 parts of polyester fiber and 10 parts of low-melting PVA fiber. Wherein the wood pulp fiber is softwood pulp fiber with the fiber length of 2-5 mm. The polyester fiber is selected from the polyester fibers with the fineness of 0.5D-1D and the length of 4-10 mm. The low-melting PVA fiber is selected from low-melting PVA fibers with the fineness of 0.5D-1D, the length of 4-10 mm and the melting point of 70-90 ℃. The PVA fiber has unique strong adhesiveness, involucra flexibility, smoothness, oil resistance, solvent resistance, protective colloid property, gas barrier property and wear resistance.
As shown in figure 1, the preparation method of the high-transparency medical adhesive tape base material comprises a pulping step, a papermaking step, a drying step, a winding step and a rewinding step.
A. The pulping step comprises a pulping step, a pulping step and a mixing step.
(1) And a pulping step, pulping the disintegrated wood pulp by a double-disc refiner to obtain pulp, wherein the pulping concentration is 2-2.5%, the beating degree is 18-23 DEG SR, and the wet weight is 10-12 g.
(2) And pulping, namely mixing and pulping the pulp fibers subjected to pulping treatment with polyester fibers and PVA fibers to prepare finished pulp. In the pulping step, the pulping concentration is 2.5-3%, the beating degree is 15-20 DEG SR, and the wet weight is 12-15 g.
Through the beating step, the mixing uniformity of the wood pulp fibers, the polyester fibers and the PVA fibers can be improved, the fiber surface layer can be fluffed, the combination degree between the fibers is improved, and the strength of the produced base material is high.
(3) And mixing materials, namely adding 10-20 kg of AKD neutral sizing liquid per ton of pulp forming pool and 15-30 kg of wet strength agent liquid per ton of pulp forming pool, uniformly mixing, and fully mixing and reacting the AKD neutral sizing liquid and the wet strength agent liquid with the pulp forming pool.
B. And a papermaking step, namely conveying the finished pulp obtained in the pulping step to a fourdrinier papermaking machine through a flow system for papermaking, wherein the parameters of the papermaking machine are as follows: the papermaking machine type is 1092-1800 mm, the papermaking quantitative is 20-60 g/square meter, and the vehicle speed is 80-150 m/min.
The approach system comprises a fore-copying pool, a concentration regulator, a high-level tank, a white water tower, a rotor screen and a pulp stabilizing tank which are arranged in sequence. The formed pulp passes through the drifting system, and the concentration, the flow and the stability of the formed pulp during papermaking can be ensured by the drifting system, so that the base material after papermaking is more uniform and consistent. Wherein, the rotor screen has the effect of purifying into thick liquid and carding fibre for the distribution of fibre is more even in the substrate after making paper, and the substrate quality is better. When the fourdrinier papermaking machine is used for papermaking, the distribution of fibers is more uniform, and the performance consistency of the papermaking base material in all directions is good.
C. Drying, namely, passing the manufactured base material through a first drying cylinder, a second drying cylinder and a hot air drying box in sequence to perform three-level drying, wherein the temperature of the first drying cylinder is 80-100 ℃, and the moisture of the paper sheet is 15-20%; the temperature of the second drying cylinder is 90-100 ℃, and the moisture of the paper sheet is 10-15%; the temperature of the hot air oven is 80-90 ℃, and the moisture of the paper leaves is 4-6%.
When the substrate passes through first dryer, second dryer, dry the substrate from two sides respectively, improve the two sides uniformity of substrate. In an oven with higher temperature, the wood pulp fiber, the polyester fiber and the low-melting PVA fiber are partially melted, and the fibers are bonded and melted for bonding and forming, so that the bonding degree of the wood pulp fiber, the polyester fiber and the low-melting PVA fiber is enhanced, and the strength of the base material is improved.
D. A coiling step, namely coiling and forming the dried base material after soft press polishing; the surface flatness of the substrate can be effectively improved by rolling the soft roller and the hard roller in the soft calendaring.
E. And rewinding, namely performing edge cutting, waste removing and other treatment on the base material wound in the winding step, and winding to obtain a finished product.
The high-transparency medical adhesive tape base material prepared by the technical scheme has the following indexes:
the high-permeability medical adhesive tape base material prepared by the formula and the method is moderate in use strength and excellent in air permeability, experience reports of 1000 volunteers in two hours show that 172 volunteers consider the product to be the best in comfort level, the product ration and the air permeability are between the two products, and the product is the best in wrinkle resistance.
The high-permeability medical adhesive tape base material prepared by the method is processed by pure plant fibers and polyester fibers, and has the advantages of low quantification, moderate strength, softness, looseness, uniformity of fibers, high air permeability, strong wrinkle resistance, easiness in tearing, uniform adhesive absorption and the like. And the wood pulp does not need to be glued after being made, the processing technology is simple, the manufacturing cost is low, and the wood pulp is a substitute for the prior medical cloth base material and the perforated PE base material. The high-permeability medical adhesive tape base material is a novel medical adhesive tape product, and can be widely applied to the medical field.
In conclusion, the high-transparency medical adhesive tape base material prepared by the method is processed by pure plant fibers and polyester fibers, and has the advantages of low quantification and light weight per unit area; the tensile strength is 0.4-1.3 KN/m, the softness and the thickness are greater than 0.08 mm, the fibers are homogeneous, the air permeability is higher than 550L/square meter, and the like, so that the composite material has the advantages of strong crease resistance, easiness in tearing, uniform glue absorption and the like. And the wood pulp does not need to be glued after being made, the processing technology is simple, the manufacturing cost is low, and the wood pulp is a substitute for the prior medical cloth base material and the perforated PE base material.
The foregoing is illustrative of the best mode of the invention and details not described herein are within the common general knowledge of a person of ordinary skill in the art. The scope of the present invention is defined by the appended claims, and any equivalent modifications based on the technical teaching of the present invention are also within the scope of the present invention.
Claims (4)
1. The utility model provides a high medical adhesive tape substrate that passes through which characterized in that: comprises the following components: wood pulp fibers, polyester fibers, low melting fibers; the wood pulp fiber composite material comprises, by weight, 40-60 parts of wood pulp fibers, 50-30 parts of polyester fibers and 9-9.5 parts of low-melting fibers;
the wood pulp fibers are softwood pulp fibers, and the length of the fibers is 2-5 mm; selecting polyester fibers with the fineness of 0.5D-1D and the length of 4-10 mm as the polyester fibers;
the low-melting-point fiber is ES low-melting-point bicomponent composite fiber, and the ES low-melting-point bicomponent composite fiber with the fineness of 1.5D-2D, the length of 38 mm-42 mm and the melting point of 130-135 ℃ is selected;
the high-permeability medical adhesive tape base material has moderate strength, the tensile strength of 0.4-1.3 KN/m, the soft and soft thickness of more than 0.08 mm, homogeneous fiber and air permeability of more than 550L/m2S, strong wrinkle resistance, easy tearing, uniform glue absorption and comfortable skin feel.
2. A high-transparency medical tape substrate according to claim 1, wherein: the wood pulp fibers, the polyester fibers and the low-melting-point fibers in the base material of the adhesive tape are uniformly distributed.
3. A high-transparency medical tape substrate according to claim 1, wherein: the preparation method of the high-transparency medical adhesive tape base material comprises a pulping step and a pulping step,
the pulping step is that the disintegrated wood pulp is pulped by a double-disc refiner to obtain pulp, wherein the pulping concentration is 2-2.5%, the beating degree is 18-23 DEG SR, and the wet weight is 10-12 g;
a pulping step, wherein the wood pulp fiber pulp obtained in the pulping step is mixed and pulped with polyester fiber and low-melting fiber to prepare finished pulp; in the pulping step, the pulping concentration is 2.5-3%, the beating degree is 15-20 DEG SR, and the wet weight is 12-15 g;
through the beating step, the mixing uniformity of the wood pulp fibers, the polyester fibers and the low-melting-point fibers can be improved, the fiber surface layer can be fluffed, and the bonding degree between the fibers is improved.
4. A high-transparency medical tape substrate according to claim 1, wherein: the preparation method of the high-transparency medical adhesive tape base material further comprises a material mixing step, namely 10-20 kg of AKD neutral sizing agent liquid per ton of pulp, and 15-30 kg of wet strength agent liquid per ton of pulp are added into a pulp forming pool and uniformly mixed.
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| CN111035296A (en) * | 2020-01-07 | 2020-04-21 | 山东昌诺新材料科技有限公司 | Terylene foot bath cloth and preparation method thereof |
| CN111485455B (en) * | 2020-04-29 | 2022-02-01 | 中国制浆造纸研究院衢州分院 | Production method of medical adhesive tape cotton paper with excellent comfort |
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| CN1454954A (en) * | 2002-05-02 | 2003-11-12 | 艾特华技术有限公司 | Non-woven fabric with increased adhesive characteristic and reduced dust formation |
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| CN108914670A (en) | 2018-11-30 |
| CN110396854A (en) | 2019-11-01 |
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Address after: 2600 Niushan Road, Dongcheng Street, Linqu County, Weifang City, Shandong Province Patentee after: Shandong jiegaoxin material technology (Group) Co.,Ltd. Address before: 2600 Niushan Road, Dongcheng Street, Linqu County, Weifang City, Shandong Province Patentee before: WEIFANG JIEGAO LONG FIBER PRODUCT TECHNOLOGY CO.,LTD. |
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Denomination of invention: A high transparency medical tape substrate Granted publication date: 20200602 Pledgee: Shandong Linqu Rural Commercial Bank Co.,Ltd. Pledgor: Shandong jiegaoxin material technology (Group) Co.,Ltd. Registration number: Y2024980006524 |