CN114953651A - Anti-virus protective barrier film - Google Patents

Abstract

The invention relates to the technical field of medical protective materials, and discloses an anti-virus protective barrier film which comprises a porous barrier film, wherein barrier holes are formed in the surface of the porous barrier film, a protective surface layer is bonded on the top of the porous barrier film, and a base layer is bonded on the bottom of the porous barrier film. According to the anti-virus protective barrier film, the hole with the aperture of 10-30 nanometers is prepared on the surface of the porous barrier film, the virus is blocked outside the barrier film by utilizing the principle that the diameter of the virus is larger than the aperture, the protective effect on the virus is improved, and in addition, the protective surface layer and the base layer are bonded on the upper surface and the lower surface of the porous barrier film, so that the effect of isolating the virus is further achieved while the strength is improved.

Description

Anti-virus protective barrier film

Technical Field

The invention relates to the technical field of medical protective materials, in particular to an anti-virus protective barrier film.

Background

It is known that viruses harmful to humans are currently in the range of 30 nm or more, i.e., 0.05 μm or more. The prevalence of new coronavirus is 90 nm. The size of the common epidemic virus is 30 nanometers, the size of the influenza A virus is 80 nanometers, and the size of the human sars virus is also 80 nanometers. The lethal viruses transmitted through air are all above 50 nm. The existing mask material such as N95 has a particle retention rate of 95% compared with 0.1 micron particle due to the principle of static electricity to micropowder, but the retention rate is reduced when the size of virus is 50 nm. The size of the existing new coronavirus is about 60-140 nm. Workers at the epidemic prevention front line also need protective materials with higher effective carrying rate.

Protective clothing today uses gas-impermeable materials for protection against viruses. This can lead to significant build-up of perspiration inside the person being protected and discomfort in operation. To solve this problem, it is necessary to conduct the water vapor out of the protective garment with effective protection.

At present, most viruses can be effectively killed after 100 ℃ and 2 hours, for example, the survival rate of the new coronavirus is 5 minutes under the condition of 70 ℃, so that a material capable of killing viruses at high temperature is provided under the condition of insufficient conditions, and an effective protective material is provided within a specific time to solve the problems.

Disclosure of Invention

Technical problem to be solved

The invention provides an anti-virus protective barrier film which has the advantages of improving the anti-virus effect, improving the air permeability, facilitating the sterilization after use and the like, and solves the problems.

(II) technical scheme

The invention provides the following technical scheme: the utility model provides an anti-virus protection barrier film, includes porous barrier film, the separation hole has been seted up on porous barrier film's surface, porous barrier film's top bonds and has the protection surface course, porous barrier film's bottom bonds and has the basic unit.

Preferably, the blocking pores are uniformly distributed on the surface of the porous isolating membrane, and the diameter value of the blocking pores is 10-30 nanometers.

Preferably, the protective surface layer and the base layer can be non-woven fabrics or cotton textile fabrics.

A preparation process of an anti-virus protective barrier film comprises the following preparation steps:

s1, selecting proper materials according to use, selecting cellulose acetate, polyethylene and polypropylene for one-time use at normal temperature, selecting materials which need high temperature sterilization, polyacrylonitrile, polyethersulfone and polyvinylidene fluoride;

s2, at normal temperature, placing 5 parts of cellulose acetate, 8 parts of polyethylene and 12 parts of polypropylene together, adding the mixture into a reaction kettle, adding a pore-forming agent and other auxiliaries simultaneously, heating the reaction kettle to 150 ℃ plus 200 ℃, carrying out melting treatment on the raw materials through the reaction kettle, preparing the raw materials, the pore-forming agent and the auxiliaries into a membrane-making solution, taking out the prepared membrane-making solution, and cooling and forming the membrane-making solution on a chill roll with the temperature of 35-50 ℃ to obtain an original cast sheet;

s3, extracting the pore-forming agent and the auxiliary agent through extraction equipment, drying the original casting piece through drying equipment to obtain a dried casting piece, stretching the dried casting piece in two directions through stretching equipment at the temperature of 120-;

and S4, adhering a protective surface layer and a base layer on the upper and lower surfaces of the porous isolating membrane through hot-pressing equipment as required.

(III) advantageous effects

The invention has the following beneficial effects:

1. according to the anti-virus protective barrier film, the hole with the aperture of 10-30 nanometers is prepared on the surface of the porous barrier film, the virus is blocked outside the barrier film by utilizing the principle that the diameter of the virus is larger than the aperture, the protective effect on the virus is improved, and in addition, the protective surface layer and the base layer are bonded on the upper surface and the lower surface of the porous barrier film, so that the effect of isolating the virus is further achieved while the strength is improved.

2. The particle size of the water vapor and the air of the anti-virus protective barrier film is far less than 10-30 nanometers, so that the water vapor and the air can freely enter and exit the layer of the isolation layer, the water vapor and the respiratory gas of a human body can be discharged after the finished product is manufactured by the isolation film, the comfort is improved, and the difficulty of heavy moisture of the existing isolation protective clothing is solved.

3. When the porous isolating membrane of the anti-virus protective isolating membrane can be made of high-temperature resistant materials such as PEI, PBT, PPO, PET, ABS, PAR and the like, because the materials have good temperature resistance, bacteria and viruses on the surface can be killed in heating modes such as cooking and the like, the using function can be recovered after killing, and the anti-virus protective isolating membrane can be repeatedly used under the condition of material tension.

Drawings

FIG. 1 is a schematic structural view of the main body of the present invention;

in the figure: 1. a porous separator film; 2. blocking the hole; 3. a protective surface layer; 4. a base layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

Referring to fig. 1, an anti-virus protective barrier film comprises a porous barrier film 1, barrier holes 2 are formed in the surface of the porous barrier film 1, a protective surface layer 3 is bonded to the top of the porous barrier film 1, a base layer 4 is bonded to the bottom of the porous barrier film 1, the porous barrier film 1 can be made of cellulose acetate, polyethylene, polypropylene, polyacrylonitrile, polyether sulfone and polyvinylidene fluoride, and when the porous barrier film 1 can be made of high-temperature resistant materials such as PEI PBT PPO PET ABS PAR, due to the good temperature resistance of the materials, the bacteria and viruses on the surface can be killed in a heating mode such as cooking, the use function can be recovered after killing, and the anti-virus protective barrier film can be repeatedly used under the condition of tense materials; the blocking holes 2 are uniformly distributed on the surface of the porous isolating membrane 1, the diameter value of the blocking holes 2 is 10-30 nanometers, the holes with the pore diameter of 10-30 nanometers are prepared on the surface of the porous isolating membrane 1, viruses are blocked outside the isolating membrane by utilizing the principle that the diameters of the viruses are larger than the pore diameter, the blocking capability of the viruses larger than 50 nanometers is one hundred percent, and the filtering capability of the viruses on dust is very good, when the protective tool is manufactured by the protective tool, multilayer wearing is not needed, medical workers are facilitated, and meanwhile, as the molecular size of water vapor is not 1 nanometer, the protective film can be conveniently used for leading out moisture in vivo to the outside of the body, and the medical workers can work for a long time without feeling discomfort; the protective surface layer 3 and the base layer 4 can be non-woven fabrics or cotton textile fabrics, if the porous isolating membrane 1 is made into a thick film, the porous isolating membrane can be independently used, such as a wound surface protective film, if the membrane is made thinner, a layer of fiber fabrics can be attached to two sides of the porous isolating membrane 1 to increase the strength of the porous isolating membrane 1 and prevent the porous isolating membrane 1 from being scratched or hung to be damaged and generate an isolating failure condition in the using process, the single surface layer of the porous isolating membrane 1 can adopt non-woven fabrics or textile fabrics, and the porous thick film is used as the protective surface layer, the pore gap of the protective surface layer is larger and does not obstruct the air from flowing through, but the layers provide larger strength, the other surface of the isolating membrane can adopt the non-woven fabrics, the textile fabrics or the thick film materials according to the using requirements to provide additional functions, such as adopting the cotton materials can provide certain sweat absorption capacity and can absorb sweat on the surface of the skin in time, keeping the skin dry; the anti-sticking fluorine-containing fabric is adopted, so that a healing environment can be provided for the wound, and the wound and the anti-protection layer are prevented from scabbing together; when the PE material with lubricating property is adopted, the comfortable skin-friendly feeling is provided when the PE material is contacted with the skin; when the high-temperature-resistant fabric is adopted, the high-temperature-resistant capability of the fabric can be provided, and the use function of the fabric is recovered after the fabric is steamed.

A preparation process of an anti-virus protective barrier film comprises the following preparation steps:

s1, selecting appropriate materials according to use, selecting cellulose acetate, polyethylene and polypropylene for one-time use at normal temperature, selecting materials which need high temperature sterilization, polyacrylonitrile, polyethersulfone and polyvinylidene fluoride;

s2, at normal temperature, placing 5 parts of cellulose acetate, 8 parts of polyethylene and 12 parts of polypropylene together, adding the mixture into a reaction kettle, adding a pore-forming agent and other auxiliaries simultaneously, heating the reaction kettle to 150 ℃ plus 200 ℃, carrying out melting treatment on the raw materials through the reaction kettle, preparing the raw materials, the pore-forming agent and the auxiliaries into a membrane-making solution, taking out the prepared membrane-making solution, and cooling and forming the membrane-making solution on a chill roll with the temperature of 35-50 ℃ to obtain an original cast sheet;

s3, extracting the pore-forming agent and the auxiliary agent through extraction equipment, drying the original cast piece through drying equipment to obtain a dried cast piece, stretching the dried cast piece in two directions through stretching equipment at the temperature of 120-;

and S4, adhering the protective surface layer 3 and the base layer 4 on the upper and lower surfaces of the porous isolating membrane 1 of the porous isolating membrane through hot pressing equipment according to needs.

It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (4)

1. An anti-virus protective barrier film comprising a porous barrier film (1), characterized in that: separation holes (2) are formed in the surface of the porous isolation film (1), a protection surface layer (3) is bonded to the top of the porous isolation film (1), and a base layer (4) is bonded to the bottom of the porous isolation film (1).

2. The barrier of claim 1, wherein: the blocking holes (2) are uniformly distributed on the surface of the porous isolating membrane (1), and the diameter value of the blocking holes (2) is 10-30 nanometers.

3. The barrier of claim 1, wherein: the protective surface layer (3) and the base layer (4) can be non-woven fabrics or cotton textile fabrics.

4. The process for preparing the anti-virus protective barrier film according to any one of the claims 1 to 4, wherein the process comprises the following steps:

s1, selecting appropriate materials according to use, selecting cellulose acetate, polyethylene and polypropylene for one-time use at normal temperature, selecting materials which need high temperature sterilization, polyacrylonitrile, polyethersulfone and polyvinylidene fluoride;

s2, at normal temperature, putting 5 parts of cellulose acetate, 8 parts of polyethylene and 12 parts of polypropylene together, adding the mixture into a reaction kettle, adding a pore-forming agent and other auxiliaries simultaneously, heating the reaction kettle to 150-;

s3, extracting the pore-forming agent and the auxiliary agent through extraction equipment, drying the original cast piece through drying equipment to obtain a dried cast piece, stretching the dried cast piece in two directions through stretching equipment at the temperature of 120-;

and S4, adhering the protective surface layer (3) and the base layer (4) on the upper and lower surfaces of the porous isolating membrane (1) of the porous isolating membrane through hot-pressing equipment as required.

Images