CN204977679U - Lasting resistant virus pierces through polytetrafluoroethylene film - Google Patents
Lasting resistant virus pierces through polytetrafluoroethylene film Download PDFInfo
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- CN204977679U CN204977679U CN201520624447.6U CN201520624447U CN204977679U CN 204977679 U CN204977679 U CN 204977679U CN 201520624447 U CN201520624447 U CN 201520624447U CN 204977679 U CN204977679 U CN 204977679U
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Abstract
The utility model discloses a lasting resistant virus pierces through polytetrafluoroethylene film, including teflon micro -pore thin film, the interfacial complex is rolled through the high accuracy steel roll in the teflon micro -pore thin film surface has polyurethane surface treatment layer, utilize the PTFE film of this patent preparation, with the compound back of dacron knitted fabric lamination, lasting water -fast pressure not only, through 80 washings, still, more than 2000mmH2O, still can be able to bear or endure WDA more than 80 times (washing - stoving - disinfection) procedure, still can reach the effect that ASTM F1671 LEVEL4 virus can't pierce through, life strengthens greatly, economy and social have been increased, practicality is excellent, satisfy the demand of social development, is a good innovative scheme, the double -motor disassembling -and -washing -free smoke ventilator has a very good market prospect.
Description
Technical field
The utility model relates to polytetrafluoroethylene (PTFE) (PTFE) film production process, particularly relates to a kind of lasting resistance to virus and penetrates polytetrafluoroethylene film.
Background technology
Medical operation protective garment is quite important for the safety of protection medical personnel, and the performance of its core is barrier property, comprises the function of liquid repellent and prevention microbe infiltration.Inevitable blood, the body fluid that must touch sufferer of medical worker, and the pathogen of various virus in blood body fluid, may be carried.
Current medical operating protective garment is divided into single use and reusable two kinds.Single use is mainly polyester, polyurethanes product, not reproducible use, and poisture-penetrability is poor, higher as consumables cost.Therefore market still has very large demand to reusable polytetrafluoroethylene film as the operation protective garment of barrier layer.
Polytetrafluoroethylene film itself is microcellular structure, and between pore size 0.2-0.5 micron, and therefore viral size 9-450nm can pass micropore much smaller than micropore size.Existing technique is by the polyurethane film in the hydrophilic atresia of polytetrafluoroethylmicroporous microporous membrane applied atop one deck, form surface treatment, be commonly called as two component film, reach lasting water pressure resistance, water-fastness and high moisture-inhibiting, intercept the function of bacterium, virus, for medical protection garment, as operating coat, the operation tablecloth etc.
If resistance to WDA (washing-dry-sterilization) cycle-index can not be improved, then there is no advantage compared with the polyurethane of market routine or polyester film disposable surgical clothing cost.Therefore polytetrafluoroethylene film must can resistance to WDA, washing/oven dry/high-temperature sterilization program.
In sum, for the defect of prior art, the special lasting resistance to virus of one that needs penetrates polytetrafluoroethylene film, to solve deficiency of the prior art.
Utility model content
For the deficiencies in the prior art, give the defect causing essence in using, the utility model proposes a kind of lasting resistance to virus and penetrate polytetrafluoroethylene film, novel in design, the number of times of the resistance to WDA circulation of reinforced TFE Surface Treated Films, make it reach more than 80 times, thus improve the usefulness of finished product, on cost advantageously.
To achieve these goals, the technical solution of the utility model is as follows:
A kind of lasting resistance to virus penetrates polytetrafluoroethylene film, comprises polytetrafluoroethylmicroporous microporous membrane, and polytetrafluoroethylmicroporous microporous membrane surface is rolled between face by high accuracy steel rider and is compounded with polyurethane surface processing layer.
Further, described polyurethane surface processing layer inside includes polyurethane resin, bridging agent, color, organosilicon, solvent, bleeding agent.
Further, the drying of described polyurethane surface processing layer is by dryer, and dryer adopts 3 needle plates to dry machine, and the temperature of drying machine is 100-200 degree.
The beneficial effects of the utility model are, structure is simple, the PTFE film utilizing the art of this patent to prepare, after polyester knitted fabric lamination compound, not only there is lasting resistance to water pressure resistance through 80 washings, still at more than 2000mmH2O, also can resistance to more than 80 times WDA (washing-dry-sterilization) program, still can reach the effect that ASTMF1671LEVEL4 virus cannot penetrate, service life strengthens greatly, adds economic and social benefit, Practical Performance is excellent, meet the demand of social development, be a kind of well innovation scheme, have very much marketing prospect.
Accompanying drawing explanation
The utility model is described in detail below in conjunction with the drawings and specific embodiments:
Fig. 1 is structural representation of the present utility model.
100-polytetrafluoroethylmicroporous microporous membrane in figure, 110-polyurethane surface processing layer.
Detailed description of the invention
The technological means realized to make the utility model, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the utility model further.
Penetrate polytetrafluoroethylene film see Fig. 1, a kind of lasting resistance to virus, comprise polytetrafluoroethylmicroporous microporous membrane 100, polytetrafluoroethylmicroporous microporous membrane 100 surface is rolled between face by high accuracy steel rider and is compounded with polyurethane surface processing layer 110.
In addition, polyurethane surface processing layer 110 inside includes polyurethane resin, bridging agent, color, organosilicon, solvent, bleeding agent.The drying of polyurethane surface processing layer 110 is by dryer, and dryer adopts 3 needle plates to dry machine, and the temperature of drying machine is 100-200 degree.
The proportioning of polyurethane solutions:
Polyurethane resin 49%
Bridging agent 4%
Color 2.5%
Organosilicon 2%
Solvent 40%
Bleeding agent 2.5%
The technological process of production: batch mixing-material loading-coating-hyperthermia drying-finished product rolling.
Rolled between face by high accuracy steel rider and feed moisture permeability polyurethane solutions, two-way PTFE microporous barrier is brought into by carrying roller, and carrying roller is pressed on pressure testing roller by hydraulic means, is formed and rolls a little, controls coating weight by the width in gap between steel rider and the size of steel roller faces relative velocity.
Adopt needle plate airflow dryer progressively to dry under 100-200 degree Celsius, make solvent volatilize completely, ensure the uniformity of film, crosslinking agent and resin react simultaneously, and resin solidifies completely.
Experimental result
The PTFE Surface Treated Films using the utility model technology to manufacture, is combined with polyester knitted fabric and makes medical protection barrier gown fabric (160g/m2+/-10%), reach following result after tested
Based on above-mentioned, the beneficial effects of the utility model are: structure is simple, the PTFE film utilizing the art of this patent to prepare, after polyester knitted fabric lamination compound, not only there is lasting resistance to water pressure resistance through 80 washings, still at more than 2000mmH2O, also can resistance to more than 80 times WDA (washing-dry-sterilization) program, still can reach the effect that ASTMF1671LEVEL4 virus cannot penetrate, service life strengthens greatly, add economic and social benefit, Practical Performance is excellent, meet the demand of social development, it is a kind of well innovation scheme, there is very much marketing prospect.
The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and description just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope, the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (1)
1. a lasting resistance to virus penetrates polytetrafluoroethylene film, comprise polytetrafluoroethylmicroporous microporous membrane, it is characterized in that: polytetrafluoroethylmicroporous microporous membrane surface is rolled between face by high accuracy steel rider and is compounded with polyurethane surface processing layer, the drying of polyurethane surface processing layer is by dryer, and dryer adopts 3 needle plates to dry machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520624447.6U CN204977679U (en) | 2015-08-18 | 2015-08-18 | Lasting resistant virus pierces through polytetrafluoroethylene film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520624447.6U CN204977679U (en) | 2015-08-18 | 2015-08-18 | Lasting resistant virus pierces through polytetrafluoroethylene film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204977679U true CN204977679U (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520624447.6U Active CN204977679U (en) | 2015-08-18 | 2015-08-18 | Lasting resistant virus pierces through polytetrafluoroethylene film |
Country Status (1)
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| CN (1) | CN204977679U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109334149A (en) * | 2018-08-23 | 2019-02-15 | 合肥普尔德医疗用品有限公司 | A kind of air-permeable anti-bacterial novel medical protective fabric |
-
2015
- 2015-08-18 CN CN201520624447.6U patent/CN204977679U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109334149A (en) * | 2018-08-23 | 2019-02-15 | 合肥普尔德医疗用品有限公司 | A kind of air-permeable anti-bacterial novel medical protective fabric |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |