CN105111631A - Preparation method for high-temperature resistant medical film with sterilization function - Google Patents
Preparation method for high-temperature resistant medical film with sterilization function Download PDFInfo
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Abstract
The invention discloses a preparation method for a high-temperature resistant medical film with a sterilization function. The preparation method comprises the following steps: firstly, uniformly mixing PVC, PE, stearic acid, polyvinyl alcohol and paraffin to obtain a material I; secondly, transferring the material I to a reaction kettle, adding sodium dodecyl benzene sulfonate, melamine, polyacrylamide and sodium carboxymethyl cellulose, carrying out a heating reaction under a negative pressure condition, and cooling to the room temperature to obtain a material II; thirdly, adding 2-acrylamide-2-methylpropanesulfonic acid, 2-diethylaminoethyl methacrylate and methyltriethoxy silane into the material II, and carrying out a heating reaction under a normal pressure condition to obtain a material III; fourthly, adding an anti-oxidant, an auxiliary anti-oxidant and barium stearate into the material III, and carrying out uniform stirring and mixing to obtain a material IV; fifthly, carrying out extrusion pelletization with a double-screw extruder; finally, carrying out extrusion film blowing with a plastic film blowing machine to obtain the medical film. The prepared medical film has high sterilization and high-temperature resistant properties.
Description
Technical field
The invention belongs to medical and health field, be specifically related to a kind of preparation method with the high temperature resistant medical films of sterilization functions.
Background technology
Along with socioeconomic development and growth in the living standard, the mankind just unprecedentedly pay close attention to self medical treatment & health cause.The increasing of survival pressure, the quickening of rhythm of life, the aggravation of environmental pollution, the frequent generation of the security incidents such as food, traffic and production and local war, natural disaster etc., the haze causing disease and wound to become the mankind forever can't get rid of.As the important means of modern medicine---the important foundation of medicine equipment and integral part, biomaterial is used for the Diagnosis and Treat of disease, the reparation of histoorgan, replacement or function to be promoted, and a large amount of struggle is rehabilitated in the sufferer at residual, dead painful edge.In recent years, global medical apparatus industry high speed development, average annual growth rate be the same period increasing speed of national economy more than 2 times, be described as " sunrise industry ", become the 21 century very active new source of economic growth.For China, China's Medical Device Market speedup in 2010 is up to 23%, and market scale breaks through 1 first, and 00,000,000,000 yuan of high pointes become the second-biggest-in-the-world Medical Device Market being only second to the U.S., and expecting market scale in 2015 will close to 3,40,000,000,000 yuan.Just because of the so huge society of biomaterial and economic worth, its R&D work is subject to countries in the world government, the showing great attention to of industrial community and scientific and technological circle day by day, is successively listed in the crucial new material development plan of hi-tech by U.S., moral, day, Australia and the Chinese government.In biological medicine material used at present, the material that itself can play bacteriostatic action has had many research and apply, but the material that can play sterilization and disinfection is actually rare.And in field of medical materials, usually can use material under given conditions, as hot conditions etc., therefore, what urgent need will be developed at present is the composite medical material can with multiple specific function, thus is better applied in medicine and hygiene fields.
Summary of the invention
The object of the invention is to provide a kind of preparation method with the high temperature resistant medical films of sterilization functions to overcome above the deficiencies in the prior art, obtaining the medical films with good sterilizing and resistance to elevated temperatures by specific preparation technology.
The present invention is realized by following technique means:
There is a preparation method for the high temperature resistant medical films of sterilization functions, comprise following preparation process:
Step one, being uniformly mixed joining in stirrer with PVC70-80 part of parts by weight, PE10-20 part, stearic acid 3-7 part, polyvinyl alcohol 1-4 part and paraffin 2-5 part, obtaining material one;
Step 2, is transferred in reactor by material one, adds the Sodium dodecylbenzene sulfonate 1-3 part with parts by weight, trimeric cyanamide 1-4 part, polyacrylamide 0.5-1 part, Xylo-Mucine 2-7 part, heated and stirred 20-30 minute under condition of negative pressure, is down to room temperature, obtains material two;
Step 3, add with 2-acrylamide-2-methyl propane sulfonic 1-4 part of parts by weight, diethyl aminoethyl methacrylate 1-3 part and Union carbide A-162 0.8-2 part in material two, be heated to 80-90 DEG C in atmospheric conditions, stir 15-20 minute, obtain material three;
Step 4, in material three, add the oxidation inhibitor 0.5-1 part with parts by weight, auxiliary antioxidant 0.2-0.6 part, barium stearate 0.5-2 part, is uniformly mixed, and obtains material four;
Step 5, by material four extruding pelletization in twin screw extruder, obtains master batch;
Step 6, adopts plastic film blowing machine to extrude blown film master batch, obtains the medical films with sterilization functions.
The described preparation method with the high temperature resistant medical films of sterilization functions, the condition be uniformly mixed in step one is stirring velocity 160-180 rev/min, mixing time 10-20 minute.
The described preparation method with the high temperature resistant medical films of sterilization functions, the pressure of the condition of negative pressure in step 2 is 0.01-0.04MPa.
The described preparation method with the high temperature resistant medical films of sterilization functions, in step 2, the condition of heated and stirred is Heating temperature 60-70 DEG C, stirring velocity 100-120 rev/min.
The described preparation method with the high temperature resistant medical films of sterilization functions, in step 3, stirring velocity is 80-100 rev/min.
The described preparation method with the high temperature resistant medical films of sterilization functions, the oxidation inhibitor in step 4 is antioxidant 1010 or anti-oxidant DLTP.
The described preparation method with the high temperature resistant medical films of sterilization functions, the auxiliary antioxidant in step 4 is auxiliary antioxidant TNP or auxiliary antioxidant TPP.
The described preparation method with the high temperature resistant medical films of sterilization functions, in step 5, extruding pelletization condition is that extrusion temperature divides four sections, and first paragraph temperature is 160-180 DEG C, and second segment temperature is 170-190 DEG C, 3rd section of temperature is 190-210 DEG C, and the 4th section of temperature is 200-210 DEG C.
The described preparation method with the high temperature resistant medical films of sterilization functions, is characterized in that, in step 6, blown film condition is that inflation film manufacturing machine barrel back segment temperature divides two sections of controls, and first paragraph controls at 200-210 DEG C, and second segment controls at 210-220 DEG C; Barrel front-end temperature divides two sections of controls, and first paragraph controls at 210-220 DEG C, and second segment controls at 220-230 DEG C; Blow-up ratio is 1.5-1.8, screw speed 23-28 rev/min, pulling speed 15-20 m/min.
The preparation method with the high temperature resistant medical films of sterilization functions provided by the invention introduces the components such as 2-acrylamide-2-methyl propane sulfonic, diethyl aminoethyl methacrylate and Union carbide A-162 in preparation process, have employed specific preparation technology simultaneously, make to create good synergy between each component, the high thermal resistance of significant increase product and sterilization ability.
The medical films that the preparation method with the high temperature resistant medical films of sterilization functions provided by the invention obtains has good properties, wherein tensile strength reaches more than 22MPa, elongation at break reaches more than 356%, vicat softening temperature reaches more than 172 DEG C, more than 98.1% is reached for colibacillary killing rate, to streptococcus aureus killing rate sack more than 97.6%, more than 98.2% is reached to Salmonellas killing rate, there is excellent sterilizing and resistance to elevated temperatures, can be applied in medical field better.
Embodiment
Embodiment 1
There is a preparation method for the high temperature resistant medical films of sterilization functions, comprise following preparation process:
Step one, be uniformly mixed joining in stirrer with PVC70 part of parts by weight, PE10 part, stearic acid 3 parts, polyvinyl alcohol 1 part and 2 parts, paraffin, wherein stirring velocity 160 revs/min, mixing time 10 minutes, obtains material one;
Step 2, material one is transferred in reactor, add the Sodium dodecylbenzene sulfonate 1 part with parts by weight, trimeric cyanamide 1 part, polyacrylamide 0.5 part, Xylo-Mucine 2 parts, be heated and stirred 20 minutes under the condition of negative pressure of 0.04MPa at pressure, wherein Heating temperature 60 DEG C, stirring velocity 100 revs/min, be down to room temperature, obtain material two;
Step 3, add in material two with the 2-acrylamide-2-methyl propane sulfonic 1 part of parts by weight, diethyl aminoethyl methacrylate 1 part and Union carbide A-162 0.8 part, be heated to 80 DEG C in atmospheric conditions, stir 15 minutes, stirring velocity is 80 revs/min, obtains material three;
Step 4, in material three, add the antioxidant 1010 0.5 part with parts by weight, auxiliary antioxidant TNP0.2 part, barium stearate 0.5 part, is uniformly mixed, and obtains material four;
Step 5, by material four extruding pelletization in twin screw extruder, condition is that extrusion temperature divides four sections, and first paragraph temperature is 160 DEG C, and second segment temperature is 170 DEG C, and the 3rd section of temperature is 190 DEG C, and the 4th section of temperature is 200 DEG C, obtains master batch;
Step 6, adopts plastic film blowing machine to extrude blown film master batch, and blown film condition is that inflation film manufacturing machine barrel back segment temperature divides two sections of controls, and first paragraph controls at 200 DEG C, and second segment controls at 210 DEG C; Barrel front-end temperature divides two sections of controls, and first paragraph controls at 210 DEG C, and second segment controls at 220 DEG C; Blow-up ratio is 1.5, screw speed 23 revs/min, and pulling speed 15 ms/min, obtains the medical films with sterilization functions.
Embodiment 2
There is a preparation method for the high temperature resistant medical films of sterilization functions, comprise following preparation process:
Step one, be uniformly mixed joining in stirrer with PVC75 part of parts by weight, PE14 part, stearic acid 5 parts, polyvinyl alcohol 2 parts and 3 parts, paraffin, wherein stirring velocity 165 revs/min, mixing time 12 minutes, obtains material one;
Step 2, material one is transferred in reactor, add the Sodium dodecylbenzene sulfonate 2 parts with parts by weight, trimeric cyanamide 2 parts, polyacrylamide 0.6 part, Xylo-Mucine 4 parts, be heated and stirred 25 minutes under the condition of negative pressure of 0.02MPa at pressure, wherein Heating temperature 63 DEG C, stirring velocity 105 revs/min, be down to room temperature, obtain material two;
Step 3, add in material two with the 2-acrylamide-2-methyl propane sulfonic 2 parts of parts by weight, diethyl aminoethyl methacrylate 2 parts and Union carbide A-162 1 part, be heated to 86 DEG C in atmospheric conditions, stir 17 minutes, stirring velocity is 90 revs/min, obtains material three;
Step 4, in material three, add the anti-oxidant DLTP 0.7 part with parts by weight, auxiliary antioxidant TPP0.4 part, barium stearate 0.8 part, is uniformly mixed, and obtains material four;
Step 5, by material four extruding pelletization in twin screw extruder, condition is that extrusion temperature divides four sections, and first paragraph temperature is 166 DEG C, and second segment temperature is 178 DEG C, and the 3rd section of temperature is 192 DEG C, and the 4th section of temperature is 205 DEG C, obtains master batch;
Step 6, adopts plastic film blowing machine to extrude blown film master batch, and blown film condition is that inflation film manufacturing machine barrel back segment temperature divides two sections of controls, and first paragraph controls at 206 DEG C, and second segment controls at 213 DEG C; Barrel front-end temperature divides two sections of controls, and first paragraph controls at 214 DEG C, and second segment controls at 225 DEG C; Blow-up ratio is 1.6, screw speed 25 revs/min, and pulling speed 17 ms/min, obtains the medical films with sterilization functions.
Embodiment 3
There is a preparation method for the high temperature resistant medical films of sterilization functions, comprise following preparation process:
Step one, be uniformly mixed joining in stirrer with PVC78 part of parts by weight, PE16 part, stearic acid 6 parts, polyvinyl alcohol 3 parts and 4 parts, paraffin, wherein stirring velocity 175 revs/min, mixing time 18 minutes, obtains material one;
Step 2, material one is transferred in reactor, add with parts by weight Sodium dodecylbenzene sulfonate 2 parts, trimeric cyanamide 3 parts, polyacrylamide 0.8 part, Xylo-Mucine 6 parts, be heated and stirred 28 minutes under the condition of negative pressure of 0.03MPa at pressure, wherein Heating temperature 65 DEG C, stirring velocity 115 revs/min, be down to room temperature, obtain material two;
Step 3, add in material two with the 2-acrylamide-2-methyl propane sulfonic 3 parts of parts by weight, diethyl aminoethyl methacrylate 2 parts and Union carbide A-162 1.5 parts, be heated to 88 DEG C in atmospheric conditions, stir 17 minutes, stirring velocity is 95 revs/min, obtains material three;
Step 4, in material three, add the antioxidant 1010 0.8 part with parts by weight, auxiliary antioxidant TPP0.5 part, barium stearate 1.6 parts, is uniformly mixed, and obtains material four;
Step 5, by material four extruding pelletization in twin screw extruder, condition is that extrusion temperature divides four sections, and first paragraph temperature is 175 DEG C, and second segment temperature is 183 DEG C, and the 3rd section of temperature is 206 DEG C, and the 4th section of temperature is 208 DEG C, obtains master batch;
Step 6, adopts plastic film blowing machine to extrude blown film master batch, and blown film condition is that inflation film manufacturing machine barrel back segment temperature divides two sections of controls, and first paragraph controls at 204 DEG C, and second segment controls at 215 DEG C; Barrel front-end temperature divides two sections of controls, and first paragraph controls at 216 DEG C, and second segment controls at 223 DEG C; Blow-up ratio is 1.7, screw speed 26 revs/min, and pulling speed 18 ms/min, obtains the medical films with sterilization functions.
Embodiment 4
There is a preparation method for the high temperature resistant medical films of sterilization functions, comprise following preparation process:
Step one, be uniformly mixed joining in stirrer with PVC80 part of parts by weight, PE20 part, stearic acid 7 parts, polyvinyl alcohol 4 parts and 5 parts, paraffin, wherein stirring velocity 180 revs/min, mixing time 20 minutes, obtains material one;
Step 2, material one is transferred in reactor, add with parts by weight Sodium dodecylbenzene sulfonate 3 parts, trimeric cyanamide 4 parts, polyacrylamide 1 part, Xylo-Mucine 7 parts, be heated and stirred 30 minutes under the condition of negative pressure of 0.01MPa at pressure, wherein Heating temperature 70 DEG C, stirring velocity 120 revs/min, be down to room temperature, obtain material two;
Step 3, add in material two with the 2-acrylamide-2-methyl propane sulfonic 4 parts of parts by weight, diethyl aminoethyl methacrylate 3 parts and Union carbide A-162 2 parts, be heated to 90 DEG C in atmospheric conditions, stir 20 minutes, stirring velocity is 100 revs/min, obtains material three;
Step 4, in material three, add the anti-oxidant DLTP 1 part with parts by weight, auxiliary antioxidant TNP0.6 part, barium stearate 2 parts, is uniformly mixed, and obtains material four;
Step 5, by material four extruding pelletization in twin screw extruder, condition is that extrusion temperature divides four sections, and first paragraph temperature is 180 DEG C, and second segment temperature is 190 DEG C, and the 3rd section of temperature is 210 DEG C, and the 4th section of temperature is 210 DEG C, obtains master batch;
Step 6, adopts plastic film blowing machine to extrude blown film master batch, and blown film condition is that inflation film manufacturing machine barrel back segment temperature divides two sections of controls, and first paragraph controls at 210 DEG C, and second segment controls at 220 DEG C; Barrel front-end temperature divides two sections of controls, and first paragraph controls at 220 DEG C, and second segment controls at 230 DEG C; Blow-up ratio is 1.8, screw speed 28 revs/min, and pulling speed 20 ms/min, obtains the medical films with sterilization functions.
Embodiment 5
The present embodiment is the further test carried out on the basis of embodiment 3, wherein by the 2-acrylamide-2-methyl propane sulfonic in embodiment 3 step 3 and diethyl aminoethyl methacrylate removing, other components and step constant, specific as follows:
There is a preparation method for the high temperature resistant medical films of sterilization functions, comprise following preparation process:
Step one, be uniformly mixed joining in stirrer with PVC78 part of parts by weight, PE16 part, stearic acid 6 parts, polyvinyl alcohol 3 parts and 4 parts, paraffin, wherein stirring velocity 175 revs/min, mixing time 18 minutes, obtains material one;
Step 2, material one is transferred in reactor, add with parts by weight Sodium dodecylbenzene sulfonate 2 parts, trimeric cyanamide 3 parts, polyacrylamide 0.8 part, Xylo-Mucine 6 parts, be heated and stirred 28 minutes under the condition of negative pressure of 0.03MPa at pressure, wherein Heating temperature 65 DEG C, stirring velocity 115 revs/min, be down to room temperature, obtain material two;
Step 3, adds the Union carbide A-162 1.5 parts with parts by weight, is heated to 88 DEG C in atmospheric conditions in material two, and stir 17 minutes, stirring velocity is 95 revs/min, obtains material three;
Step 4, in material three, add the antioxidant 1010 0.8 part with parts by weight, auxiliary antioxidant TPP0.5 part, barium stearate 1.6 parts, is uniformly mixed, and obtains material four;
Step 5, by material four extruding pelletization in twin screw extruder, condition is that extrusion temperature divides four sections, and first paragraph temperature is 175 DEG C, and second segment temperature is 183 DEG C, and the 3rd section of temperature is 206 DEG C, and the 4th section of temperature is 208 DEG C, obtains master batch;
Step 6, adopts plastic film blowing machine to extrude blown film master batch, and blown film condition is that inflation film manufacturing machine barrel back segment temperature divides two sections of controls, and first paragraph controls at 204 DEG C, and second segment controls at 215 DEG C; Barrel front-end temperature divides two sections of controls, and first paragraph controls at 216 DEG C, and second segment controls at 223 DEG C; Blow-up ratio is 1.7, screw speed 26 revs/min, and pulling speed 18 ms/min, obtains the medical films with sterilization functions.
Embodiment 6
The present embodiment is the further test carried out on the basis of embodiment 3, does not wherein carry out the condition of negative pressure reacting by heating in step 2, does not simultaneously add Union carbide A-162 in step 3, other components and step constant, specific as follows:
There is a preparation method for the high temperature resistant medical films of sterilization functions, comprise following preparation process:
Step one, be uniformly mixed joining in stirrer with PVC78 part of parts by weight, PE16 part, stearic acid 6 parts, polyvinyl alcohol 3 parts and 4 parts, paraffin, wherein stirring velocity 175 revs/min, mixing time 18 minutes, obtains material one;
Step 2, is transferred in reactor by material one, add with parts by weight Sodium dodecylbenzene sulfonate 2 parts, trimeric cyanamide 3 parts, polyacrylamide 0.8 part, Xylo-Mucine 6 parts, stir 28 minutes, stirring velocity 115 revs/min, obtains material two;
Step 3, add in material two with the 2-acrylamide-2-methyl propane sulfonic 3 parts of parts by weight and diethyl aminoethyl methacrylate 2 parts, be heated to 88 DEG C in atmospheric conditions, stir 17 minutes, stirring velocity is 95 revs/min, obtains material three; Step 4, in material three, add the antioxidant 1010 0.8 part with parts by weight, auxiliary antioxidant TPP0.5 part, barium stearate 1.6 parts, is uniformly mixed, and obtains material four;
Step 5, by material four extruding pelletization in twin screw extruder, condition is that extrusion temperature divides four sections, and first paragraph temperature is 175 DEG C, and second segment temperature is 183 DEG C, and the 3rd section of temperature is 206 DEG C, and the 4th section of temperature is 208 DEG C, obtains master batch;
Step 6, adopts plastic film blowing machine to extrude blown film master batch, and blown film condition is that inflation film manufacturing machine barrel back segment temperature divides two sections of controls, and first paragraph controls at 204 DEG C, and second segment controls at 215 DEG C; Barrel front-end temperature divides two sections of controls, and first paragraph controls at 216 DEG C, and second segment controls at 223 DEG C; Blow-up ratio is 1.7, screw speed 26 revs/min, and pulling speed 18 ms/min, obtains the medical films with sterilization functions.
Carry out performance test to the medical films with sterilization functions that above embodiment prepares, result is as follows:
As can be seen from above test-results, embodiment 1-4 is the high temperature resistant medical films with sterilization functions provided by the invention, it has good performance, wherein tensile strength reaches more than 22MPa, elongation at break reaches more than 356%, vicat softening temperature reaches more than 172 DEG C, more than 98.1% is reached for colibacillary killing rate, to streptococcus aureus killing rate sack more than 97.6%, more than 98.2% is reached to Salmonellas killing rate, there is excellent sterilizing and resistance to elevated temperatures.Embodiment 5 and embodiment 6 are the further improvement carried out on the basis of embodiment 3, can find out, owing to not adding 2-acrylamide-2-methyl propane sulfonic and diethyl aminoethyl methacrylate in embodiment 5, therefore result in the obvious decline of sterilising effect, can illustrate, the introducing for 2-acrylamide-2-methyl propane sulfonic and diethyl aminoethyl methacrylate serves obvious sterilising effect in the present invention; The condition of negative pressure reacting by heating in step 2 is not carried out in embodiment 6, do not add Union carbide A-162 in step 3 simultaneously, last product vicat softening temperature obviously reduces, elongation at break also decreases simultaneously, therefore can illustrate that the introducing of above component and condition greatly can improve the high thermal resistance of product.
Claims (9)
1. there is a preparation method for the high temperature resistant medical films of sterilization functions, it is characterized in that, comprise following preparation process:
Step one, being uniformly mixed joining in stirrer with PVC70-80 part of parts by weight, PE10-20 part, stearic acid 3-7 part, polyvinyl alcohol 1-4 part and paraffin 2-5 part, obtaining material one;
Step 2, is transferred in reactor by material one, adds the Sodium dodecylbenzene sulfonate 1-3 part with parts by weight, trimeric cyanamide 1-4 part, polyacrylamide 0.5-1 part, Xylo-Mucine 2-7 part, heated and stirred 20-30 minute under condition of negative pressure, is down to room temperature, obtains material two;
Step 3, add with 2-acrylamide-2-methyl propane sulfonic 1-4 part of parts by weight, diethyl aminoethyl methacrylate 1-3 part and Union carbide A-162 0.8-2 part in material two, be heated to 80-90 DEG C in atmospheric conditions, stir 15-20 minute, obtain material three;
Step 4, in material three, add the oxidation inhibitor 0.5-1 part with parts by weight, auxiliary antioxidant 0.2-0.6 part, barium stearate 0.5-2 part, is uniformly mixed, and obtains material four;
Step 5, by material four extruding pelletization in twin screw extruder, obtains master batch;
Step 6, adopts plastic film blowing machine to extrude blown film master batch, obtains the medical films with sterilization functions.
2. the preparation method with the high temperature resistant medical films of sterilization functions according to claim 1, is characterized in that, the condition be uniformly mixed in step one is stirring velocity 160-180 rev/min, mixing time 10-20 minute.
3. the preparation method with the high temperature resistant medical films of sterilization functions according to claim 1, is characterized in that, the pressure of the condition of negative pressure in step 2 is 0.01-0.04MPa.
4. the preparation method with the high temperature resistant medical films of sterilization functions according to claim 1, is characterized in that, in step 2, the condition of heated and stirred is Heating temperature 60-70 DEG C, stirring velocity 100-120 rev/min.
5. the preparation method with the high temperature resistant medical films of sterilization functions according to claim 1, is characterized in that, in step 3, stirring velocity is 80-100 rev/min.
6. the preparation method with the high temperature resistant medical films of sterilization functions according to claim 1, is characterized in that, the oxidation inhibitor in step 4 is antioxidant 1010 or anti-oxidant DLTP.
7. the preparation method with the high temperature resistant medical films of sterilization functions according to claim 1, is characterized in that, the auxiliary antioxidant in step 4 is auxiliary antioxidant TNP or auxiliary antioxidant TPP.
8. the preparation method with the high temperature resistant medical films of sterilization functions according to claim 1, it is characterized in that, in step 5, extruding pelletization condition is that extrusion temperature divides four sections, first paragraph temperature is 160-180 DEG C, second segment temperature is 170-190 DEG C, 3rd section of temperature is 190-210 DEG C, and the 4th section of temperature is 200-210 DEG C.
9. the preparation method with the high temperature resistant medical films of sterilization functions according to claim 1, it is characterized in that, in step 6, blown film condition is that inflation film manufacturing machine barrel back segment temperature divides two sections of controls, and first paragraph controls at 200-210 DEG C, and second segment controls at 210-220 DEG C; Barrel front-end temperature divides two sections of controls, and first paragraph controls at 210-220 DEG C, and second segment controls at 220-230 DEG C; Blow-up ratio is 1.5-1.8, screw speed 23-28 rev/min, pulling speed 15-20 m/min.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109082036A (en) * | 2018-08-15 | 2018-12-25 | 方金婷 | A kind of preparation method and applications of compound antibacterial plastic film |
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| CN104140612A (en) * | 2014-06-23 | 2014-11-12 | 苏州市盛百威包装设备有限公司 | Polyvinyl chloride composite thin film material and preparation method thereof |
| CN104072915A (en) * | 2014-07-10 | 2014-10-01 | 上海新上化高分子材料有限公司 | Radiation-resistant sterile medical polyvinyl chloride material and preparation method thereof |
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Application publication date: 20151202 |