JP7018216B2 - Medical protective materials based on polytetrafluoroethylene, their manufacturing methods, medical protective clothing - Google Patents

Description

The present invention belongs to the medical protection field with respect to a medical protective material based on polytetrafluoroethylene, a method for producing the same, and medical protective clothing.

The epidemic of new coronavirus pneumonia in 2020 includes direct infections, aerosol infections, contact infections, etc., and is spread in close range by the patient's sneezing, coughing, talking droplets, and exhaled gas. .. Aerosols formed by mixing droplets with the atmosphere are inhaled by humans, or droplets adhere to the surface of an object. Infection occurs when a person who comes into contact with a contaminated object comes into contact with mucous membranes such as the oral cavity, nasal cavity, and eyes.

Viruses transmitted by droplets are generally 70-150 nm in diameter. Influenza virus has a diameter of 80 to 120 nm, SARS virus has a diameter of 70 to 80 nm, coronavirus has a diameter of 80 to 150 nm, and bacteria have a larger diameter than virus, about 500 to 5000 nm. Therefore, the protective material needs to have an effective pore diameter smaller than 70 nm in order to realize effective virus protection.

Conventionally, most of the materials used for protective clothing are polyester and polypropylene non-woven fabrics. The fiber diameter of disposable medical protective clothing is 150 to 250 nm, and the breaking strength standard is 50 N. It has some protective effect, but its strength is insufficient. To address these shortcomings of disposable protective clothing, healthcare professionals need to wear double or triple protective clothing. As a result, the person inside feels sultry, unable to ventilate, and inconvenient if urgently needed.

A technical problem to be solved by the present invention is to provide a medical protective material based on polytetrafluoroethylene, a method for producing the same, and a medical protective clothing against the shortcomings of the prior art. Medical protective material containing polytetrafluoroethylene fiber woven fabric and based on polytetrafluoroethylene is used, and the polytetrafluoroethylene fiber woven fabric is provided with colored labeling tape and conductive fibers for medical use. High strength is given to the protective clothing, it can be used repeatedly, and it is easy to recognize that it is conductive that does not change over time. Moreover, the protective effect is safely achieved, and cross-infection to medical workers can be avoided due to viruses, respiratory infections, and the like.

The present invention provides a medical protective material based on polytetrafluoroethylene. The medical protective material based on the polytetrafluoroethylene includes a polytetrafluoroethylene fiber woven fabric and a polytetrafluoroethylene microporous membrane covering one or both sides of the polytetrafluoroethylene fiber woven fabric.

Preferably, the polytetrafluoroethylene fiber woven fabric is woven using a primary color or colored polytetrafluoroethylene filament having a fineness of 111 to 389 dtex, or a primary color having a fineness of 1.1 to 3.3 dtex and a length of 30 to 70 mm. The short fibers are woven by themselves using colored polytetrafluoroethylene short fibers, or are woven by blending with the primary color or colored polytetrafluoroethylene short fibers and high temperature resistant fibers.

In order to give the medical protective clothing excellent breathability and protective performance, the warp direction density of the polytetrafluoroethylene fiber fabric is 296 to 551 lines / 10 cm, and the weft direction density is 256 to 433 lines / 10 cm. be.

In order to give the medical protective clothing antistatic properties that do not change over time, conductive fibers are provided on the polytetrafluoroethylene fiber woven fabric, and the conductive fibers are metal threads, carbon fiber threads, graphite filaments or It is short fiber.

A colored labeling tape is woven into the polytetrafluoroethylene fiber fabric so that the doctors and nurses who work can be easily recognized by ward, and the colored labeling tape is woven with colored polytetrafluoroethylene long fibers or short fibers. Will be done.

Preferably, the polytetrafluoroethylene microporous membrane has a plurality of pores, the pore diameter of the pores is 20 to 70 nm, and the thickness of the polytetrafluoroethylene microporous membrane is 0.01 to 0. It is 03 mm.

Preferably, the polytetrafluoroethylene fiber woven fabric has a plain weave, twill weave, satin weave or leno weave structure.

In order to bond the polytetrafluoroethylene fiber woven fabric and the polytetrafluoroethylene microporous membrane, a foam adhesive layer is provided between the polytetrafluoroethylene fiber woven fabric and the polytetrafluoroethylene microporous membrane.

Preferably, the foamed adhesive layer is blended (based on% by weight) with a water-soluble polyacrylic acid emulsion of 40 to 50%, titanium dioxide of 8 to 10%, kaolin of 7 to 10%, and a PF thickener of 1 to 2%. The cross-linking agent is 1 to 2%, the surface affinity agent is 3 to 5%, the A651-20 thermosetting adhesive is 1 to 3%, the aqueous ammonia is 1 to 2%, and the rest is water.

In order to enhance the protective performance of the medical protective material based on polytetrafluoroethylene, a melt blown non-woven fabric is provided between the polytetrafluoroethylene fiber woven fabric and the polytetrafluoroethylene microporous film, and the polytetrafluoroethylene is provided. The fluoroethylene fiber woven fabric, the melt blown non-woven fabric, the foamed adhesive layer, and the polytetrafluoroethylene microporous film are laminated in this order.

Preferably, the meltblown nonwoven fabric is a polyester meltblown nonwoven fabric or a polypropylene meltblown nonwoven fabric, and has a weight of 10 to 45 g / m ² .

The present invention further provides a method for producing a medical protective material based on polytetrafluoroethylene. The medical protective material based on the polytetrafluoroethylene is the medical protective material based on the polytetrafluoroethylene, and the production method is:
Step S1 for weaving a fabric using primary color polytetrafluoroethylene long fibers or short fibers, colored polytetrafluoroethylene long fibers or short fibers, and conductive fibers as materials,
Step S2 of arranging the fabric to obtain a polytetrafluoroethylene fiber woven fabric, and
It includes step S3 of binding a polytetrafluoroethylene microporous film to the polytetrafluoroethylene fiber woven fabric by a foam coating laminating method.

In S2, the arrangement includes washing with water and squeezing.

In S3, the parameters of the foam coating laminating method are that the foam concentration of the foam generator is 40 to 55 g / l, the foam diameter is 0.5 to 4 mm, and the foam generation ratio is 1: 2.5 to 1. : 3.5, the processing speed of the coating machine is 10 to 20 m / min, the roll pressure is 6 to 10 kg / cm ² , the temporary drying temperature is 60 to 85 ° C., and the main drying temperature is 100 to 100. It is 130 ° C.

The present invention further provides a method for producing a medical protective material based on polytetrafluoroethylene. The medical protective material based on the polytetrafluoroethylene is the medical protective material based on the polytetrafluoroethylene, and the production method is:
Step S10 for weaving fabric using primary color polytetrafluoroethylene long fibers or short fibers, colored polytetrafluoroethylene long fibers or short fibers, conductive fibers, etc.
Step S20 to arrange the fabric to obtain a polytetrafluoroethylene fiber woven fabric, and
Including step S30 in which the meltblown nonwoven fabric is bonded to one or both sides of the polytetrafluoroethylene fiber woven fabric and then the polytetrafluoroethylene microporous film is bonded to the meltblown nonwoven fabric by the method of foam coating laminating.
In S20, the arrangement includes washing with water and squeezing, and in S30, the parameters of the foam coating laminating method are that the foam concentration of the foam generator is 40-55 g / l and the foam diameter is 0.5-4 mm. Yes, the foam generation ratio is 1: 2.5 to 1: 3.5, the processing speed of the coating machine is 10 to 20 m / min, the roll pressure is 6 to 10 kg / cm ² , and the temporary drying temperature is The temperature is 60 to 85 ° C, and the main drying temperature is 100 to 130 ° C.

Further, in the present invention, medical protective clothing is provided. The cloth for the medical protective clothing is a medical protective material based on polytetrafluoroethylene, and the medical protective material based on polytetrafluoroethylene is based on the above polytetrafluoroethylene. It is a protective material for medical use.

Preferably, the auxiliary material of the medical protective clothing includes a sewing thread, a wire fastener, a rubber band, and a waterproof pressure-bonding tape. Here, the sewing thread is a polytetrafluoroethylene sewing thread having a fineness of 1200 to 2400 dtex per thread, the material of the wire fastener is fluororesin, the material of the rubber band is polyurethane, and the waterproof property. The crimping tape is a transparent crimping tape made of fluororesin.

As can be seen from the above contents, the present invention uses a medical protective material containing polytetrafluoroethylene fiber fabric and based on polytetrafluoroethylene, and coloring the polytetrafluoroethylene fiber fabric with a labeling tape. By providing conductive fibers, high strength is imparted to medical protective clothing, and it can be used repeatedly, and it is easy to recognize that it is conductive that does not change over time. Since the melt-blown non-woven fabric is provided, the protective effect can be achieved more effectively and safely, and cross-infection to medical workers can be avoided due to virus, respiratory infection, or the like.

Next, the technical solution of the present invention will be described in detail with reference to the drawings and some examples.

FIG. 1 is a schematic structural diagram of a medical protective material based on polytetrafluoroethylene. FIG. 2 is another structural schematic diagram of a medical protective material based on polytetrafluoroethylene. FIG. 3 is a schematic diagram of the tissue structure of the polytetrafluoroethylene fiber woven fabric. FIG. 4 is a structural schematic diagram of a modified example of a medical protective material based on polytetrafluoroethylene. FIG. 5 is a schematic structural diagram of another modified example of a medical protective material based on polytetrafluoroethylene. FIG. 6 is a schematic structural diagram of the hat parts. FIG. 7 is a schematic structural diagram of the upper garment parts. FIG. 8 is a schematic structural diagram of the undergarment parts. FIG. 9 is a schematic structural diagram of the medical protective clothing.

FIG. 1 is a schematic structural diagram of a medical protective material based on polytetrafluoroethylene, FIG. 2 is another structural schematic diagram of a medical protective material based on polytetrafluoroethylene, and FIG. 3 is a schematic structural diagram of polytetrafluoroethylene. It is a schematic diagram of the tissue structure of a polyethylene fiber woven fabric. As shown in FIGS. 1 to 3, in the present invention, a medical protective material based on polytetrafluoroethylene is provided. The medical protective material based on the polytetrafluoroethylene includes a polytetrafluoroethylene fiber woven fabric 1 and a polytetrafluoroethylene microporous membrane 3 covering one or both sides of the polytetrafluoroethylene fiber woven fabric. Specifically, the polytetrafluoroethylene microporous film 3 is bonded to one side (outer surface or back surface) or both sides (both outer and back surfaces) of the polytetrafluoroethylene fiber woven fabric 1. The polytetrafluoroethylene microporous membrane has a plurality of pores, and preferably the polytetrafluoroethylene microporous membrane 3 is configured to have unidirectional permeation characteristics. The bonding may be performed in a coating bonding machine using various processes such as hot pressing or laminating.

In the chemical structure of polytetrafluoroethylene, two fluorine atoms connected to a carbon atom are completely symmetrical, the carbon atom and the fluorine atom are connected by a covalent bond, the molecule is neutral, and it is a non-polar polymer. .. Polytetrafluoroethylene has excellent electrical insulation, is strong against strong acids / bases and strong oxidizing agents, is not only moisture-proof, mildew-proof and antibacterial, but also has excellent weather resistance, high strength, flame retardancy, etc. Has the characteristics of.

In the prior art, polytetrafluoroethylene is commonly used industrially for filtration, for example using polytetrafluoroethylene filaments for high temperature emissions generated in industries such as steel, cement and waste incineration. Manufactures fabrics for filtration materials for filtration and dust removal. In order to obtain a filtering function, it is common to use polytetrafluoroethylene filaments having a high fineness to produce a fabric having a low warp and weft density (for example, a warp and weft fineness of 555 × 555 dtex, warp and weft). The directional density is 275 x 220 lines / 10 cm, and the weight per unit area is 280 g / m ² ). Since the fabric is heavy, it is not suitable as a cloth for clothes. A product in which a non-woven fabric and a polytetrafluoroethylene long fiber fabric are combined by a method such as needle stick can be effectively filtered against dust and the like, but the filtering effect is not preferable when it comes to microorganisms such as bacteria or viruses.

In the present invention, by changing parameters such as the warp density and fineness of the fabric, the unique characteristics of the fiber are utilized to give the medical protective material based on polytetrafluoroethylene to have excellent performance peculiar to it. .. When the method of binding the polytetrafluoroethylene fiber woven fabric 1 and the polytetrafluoroethylene microporous membrane 3 is used, the medical protective material based on polytetrafluoroethylene has high strength, excellent air permeability and filtration performance. Granted.

Specifically, the polytetrafluoroethylene fiber fabric 1 is woven or woven using polytetrafluoroethylene filaments having a primary color or coloring (for example, blue, green, red, orange, etc.) having a fineness of 111 to 389 dtex, or has a fineness. 1.1 to 3.3 dtex, length 30 to 70 mm
The short fibers are woven by themselves using the primary color or colored polytetrafluoroethylene short fibers, or are woven by blending the primary color or colored polytetrafluoroethylene short fibers with high temperature resistant fibers. The count is preferably 65 to 24 dtex, and the high temperature resistant fiber means a fiber having a safe use temperature of 250 ° C. or higher.

Illustratively, as the polytetrafluoroethylene fiber woven fabric 1, a fabric is woven using primary-colored or colored polytetrafluoroethylene filaments, and then the fabric is arranged (including washing with water, lining, etc., but these are included. It may be a polytetrafluoroethylene fiber fabric obtained by (but not limited to).

The polytetrafluoroethylene fiber woven fabric is preferably woven by a mechanical weaving method, and a plain weave, a twill weave, a satin weave or a leno weave structure can be used. The warp direction density of the polytetrafluoroethylene fiber woven fabric 1 is 296 to 551 lines / 10 cm, and the weft direction density is 256 to 433 lines / 10 cm.

The polytetrafluoroethylene fiber fabric imparts high strength to the polytetrafluoroethylene-based medical protective material, which eliminates the need for healthcare professionals to wear multiple layers of protective clothing.

When weaving the polytetrafluoroethylene fiber woven fabric, in order to give antistatic performance that does not change over time to the medical protective material based on polytetrafluoroethylene, predetermined intervals are provided in the warp direction and the weft direction. In other words, the conductive fiber 5 may be provided on the polytetrafluoroethylene fiber woven fabric, and the conductive fiber is a metal thread, a carbon fiber thread, a graphite long fiber or a short fiber. Specifically, the conductive fiber is a metal yarn having a diameter of 0.1 to 0.5 mm (for example, stainless steel yarn), a carbon fiber yarn having a fineness of 333 to 555 dtex, a graphite long fiber or a short fiber, or a fineness. Uses 111-278 dtex, antistatic treated synthetic long or short fibers. For example, the conductive fibers 5 may be provided by a method in which the conductive fibers 5 are woven at intervals of 5 to 50 mm in the warp direction and the weft direction when weaving the polytetrafluoroethylene fiber woven fabric 1.

When weaving the polytetrafluoroethylene fiber fabric, weave 4 colored marker tapes at specific positions in the warp and / or weft directions so that the doctors and nurses who work can be easily recognized by ward. The color of the labeling tape 4 is different from that of the polytetrafluoroethylene fiber fabric. The colored labeling tape 4 is woven from colored polytetrafluoroethylene long fibers or short fibers, that is, the colored labeling tape 4 is woven from colored polytetrafluoroethylene long fibers or short fibers into a polytetrafluoroethylene fiber fabric 1. Is to be done. The width of the colored marker tape 4 may be 10 to 15 mm. Preferably, the colored labeling tape 4 is woven using colored polytetrafluoroethylene staples having a fineness of 111 to 389 dtex, or a colored polytetrafluoro fiber having a fineness of 1.1 to 3.3 dtex and a length of 30 to 70 mm. The short fibers are woven by themselves using the short ethylene fibers.

The colored marker tape 4 is a recognition marker that does not change over time, and is less likely to come off and adhere to contaminants as compared with conventional recognition methods such as attaching a colored plastic tape to a specific position of protective clothing. In particular, in the disinfection and fumigation process after repeated use, the colored sign tape does not come off and stains do not adhere. When doctors working in different wards such as severe wards, ICU wards, and infected wards wear protective clothing with colored marker tape 4, they can be distinguished and recognized by the color of the tape.

In order to ensure excellent protective performance for a medical protective material based on polytetrafluoroethylene, the pore diameter of the pores of the polytetrafluoroethylene microporous membrane 3 is 20 to 70 nm, and the thickness is 0. It is 01 to 0.03 mm.

In the present invention, considering the feature that the surfaces of the polytetrafluoroethylene fiber woven fabric 1 and the polytetrafluoroethylene microporous membrane 3 are smooth and difficult to connect, the polytetrafluoroethylene fiber woven fabric 1 and the polytetrafluoroethylene are considered. A foam adhesive layer 2 is provided between the microporous membrane 3 and the foam adhesive layer 3.

When producing the foamed adhesive layer 2, it is preferable to set the following parameters. The foam concentration of the foam generator is 40 to 55 g / l, the foam diameter is 0.5 to 4 mm, the foam generation ratio is 1: 2.5 to 1: 3.5, and the processing speed of the coating machine is The roll pressure is 10 to 20 m / min, the roll pressure is 6 to 10 kg / cm ² , the temporary drying temperature is 60 to 85 ° C., and the main drying temperature is 100 to 130 ° C.

The composition of the foam adhesive layer (based on weight%) is 40 to 50% of a water-soluble polyacrylic acid emulsion, 8 to 10% of titanium dioxide, 7 to 10% of kaolin, and a PF thickener (for example, PF165A thickener). ) 1 to 2%, cross-linking agent (for example, cross-linking agent TAC) 1 to 2%, surface affinity agent (for example, multipurpose high-speed surface affinity agent WIN-055) 3 to 5%, A651-20 thermosetting adhesive 1 It is preferable that the content is ~ 3%, aqueous ammonia (1-2%), and the rest is water. In the present invention, unless otherwise specified, the description regarding the formulation of the foamed adhesive layer is based on% by weight. The water-soluble polyacrylic acid emulsion is preferably a degradable, water-soluble formaldehyde-free polyacrylate emulsion, and since the foaming adhesive layer does not contain a formaldehyde component, it may cause environmental pollution. do not have.

The foamed adhesive layer is coated on the polytetrafluoroethylene fiber woven fabric 1, and the polytetrafluoroethylene fiber woven fabric 1 and the polytetrafluoroethylene microporous film 3 are bonded by a foam coating laminating method, and the foamed adhesive layers have different diameters. When applied to a polytetrafluoroethylene fiber fabric in the form of foam and under pressure, the foam bursts, forming a discontinuous adhesive film on the surface of the polytetrafluoroethylene fiber fabric, thereby forming a polytetra. The fluoroethylene-based medical protective material is provided with excellent breathability and effective filtration performance against viruses.

The present invention further discloses a method for producing a medical protective material based on the above-mentioned polytetrafluoroethylene. The method is
Step S1 for weaving a fabric using primary color polytetrafluoroethylene long fibers or short fibers, colored polytetrafluoroethylene long fibers or short fibers, and conductive fibers as materials,
Step S2 to obtain a polytetrafluoroethylene fiber woven fabric by arranging the fabric (washing with water, squeezing, etc.), and
It includes step S3 of binding a polytetrafluoroethylene microporous film to the polytetrafluoroethylene fiber woven fabric by a foam coating laminating method.

When warping in S1 above, one conductive fiber 5 (for example, metal thread) is woven into the warp axis at intervals of 5 to 50 mm, and the intermediate portion or a specific position is colored with a width of 10 to 15 mm. Line up polytetrafluoroethylene staples or staples. The warping speed is 160 to 180 m / min, a plain weave, a twill weave, a satin weave or a leno weave structure is used for the woven fabric, and the processing speed of the loom is 350 rpm.

In the above arrangement of S2, a washing machine is used, the processing speed is 55 to 60 m / min, and the laying temperature is about 110 ° C. Arrangement of the cloth includes, but is not limited to, washing with water, laying out, etc., and such arrangement makes the surface of the cloth clean and flat, and the width of the cloth is stable. The polytetrafluoroethylene microporous film 3 is bonded to one side (for example, the outer surface) or both outer and back surfaces of the arranged polytetrafluoroethylene fiber woven fabric with an adhesive.

From the viewpoint of simplifying the manufacturing process and reducing costs, when manufacturing a medical protective material based on polytetrafluoroethylene, which does not require particularly high strength, the polytetrafluoroethylene fiber woven fabric 1 and poly are used. The tetrafluoroethylene microporous membrane 3 may be bonded by a hot press method. One of ordinary skill in the art can determine the parameters of the hot press process according to the actual situation. For example, the polytetrafluoroethylene fiber woven fabric 1 and the polytetrafluoroethylene microporous membrane 3 may be laminated on a binding machine and bonded at 230 to 250 ° C.

FIG. 4 is a structural schematic diagram of a modified example of a medical protective material based on polytetrafluoroethylene, and FIG. 5 is a structural schematic diagram of another modified example of a medical protective material based on polytetrafluoroethylene. be. As shown in FIGS. 4 and 5, the protective performance of the medical protective material based on polytetrafluoroethylene is enhanced, and the filtering effect and filtration efficiency of the medical protective material based on polytetrafluoroethylene are enhanced. Therefore, the melt blown nonwoven fabric 9 may be provided between the polytetrafluoroethylene fiber woven fabric 1 and the polytetrafluoroethylene microporous membrane 3.

The meltblown nonwoven fabric 9 is preferably a polyester meltblown nonwoven fabric or a polypropylene meltblown nonwoven fabric, and has a weight of 10 to 45 g / m ² .

When the foamed adhesive layer 2 is provided between the polytetrafluoroethylene fiber woven fabric 1 and the polytetrafluoroethylene microporous membrane 3, the polytetrafluoroethylene fiber woven fabric 1, the melt blown nonwoven fabric 9, and the foamed adhesive layer 2 are provided. , Polytetrafluoroethylene microporous membrane 3 is laminated in this order.

The present invention further provides a method for producing a modified example of the medical protective material based on the above-mentioned polytetrafluoroethylene.

In S10, fabrics are woven from primary colored polytetrafluoroethylene long fibers or short fibers, colored polytetrafluoroethylene long fibers or short fibers, conductive fibers, etc., for example, by China Spinning Machinery Group Zhengzhou Weaving Machinery Co., Ltd. The fabric is woven in the manufactured rapier weaving machine.

In S20, the fabric is arranged to obtain a polytetrafluoroethylene fiber woven fabric. The arrangement may include washing with water and squeezing. For example, in a water-washing width-out machine manufactured by Wuxi Kaidai Weaving Machinery Co., Ltd., water-washing and width-out arrangement are performed, the processing speed is 55 to 60 m / min, and the width-out temperature is 110 ° C.

In S30, after the meltblown nonwoven fabric is bonded to one side or both sides of the polytetrafluoroethylene fiber woven fabric, the polytetrafluoroethylene microporous membrane is bonded to the meltblown nonwoven fabric by the method of foam coating laminating.

Here, the foam concentration of the foam generator is 40 to 55 g / l, the foam diameter is 0.5 to 4 mm, the foam generation ratio is 1: 2.5 to 1: 3.5, and the coating machine has. The treatment rate is 10 to 20 m / min, the roll pressure is 6 to 10 kg / cm ² , the temporary drying temperature is 60 to 85 ° C., and the main drying temperature is 100 to 130 ° C.

The composition of the foam adhesive layer is 40 to 50% of a water-soluble polyacrylic acid emulsion, 8 to 10% of titanium dioxide, 7 to 10% of kaolin, and 1 to 2 of a PF thickener (for example, PF165A thickener).
%, Crosslinker (eg, Crosslinker TAC) 1-2%, Surface Affinity (eg, Multipurpose High Speed Surface Affinity WIN-055) 3-5%, A651-20 Thermosetting Adhesive 1-3%, Ammonia water 1-2%, the rest is water.

The medical protective material based on polytetrafluoroethylene produced in the present invention has high performance characteristics that exceed the standard for disposable protective clothing by more than 5 times, and the warp strength of the woven fabric exceeds 500 N. The directional strength is over 400N, which is more than eight times the standard for disposable protective clothing. The material has a burst strength of 400 N or more, which is three times the standard (the standard is the burst strength for medical use), and can be repeatedly used after disinfection and sterilization. It has the economic effect of saving money and reducing costs.

Further, in the present invention, medical protective clothing is provided. The medical protective clothing includes a hat, an upper garment, and a lower garment, and the hat, the upper garment, and the lower garment may have a one-piece structure or a separate structure. The medical protective clothing may include protective equipment such as a mask. The cloth for the medical protective clothing is a medical protective material based on the above-mentioned polytetrafluoroethylene.

Computer-aided design (CAD) can be used for the design of medical protective clothing, such as the position design, foundation cloth width, length design, etc. of the colored marking tape for weaving protective clothing fabrics including the colored marking tape. Is. 6 is a schematic structural diagram of the hat part, FIG. 7 is a schematic structural diagram of the upper garment part, FIG. 8 is a schematic structural diagram of the lower garment part, and FIG. 9 is a schematic structural diagram of the medical protective clothing. The medical protective clothing is composed of a plurality of parts, and the parts include a hat part 6, an upper garment part 7, a lower garment part 8, and the like. A medical protective material based on polytetrafluoroethylene is used for the fabric of the part, and a person skilled in the art may optionally provide a colored labeling tape 4 at a specific position of the part for labeling. ..

Illustratively, in the medical protective clothing, hat parts 6, two upper garment parts 7, and two lower garment parts 8 shown in FIGS. 6 to 8 are used, and S, M, L which are accepted in the industry. Layout and design are done in 5 sizes of, XL and XXL. When cutting, use a high-strength scissors suitable for cutting medical protective materials based on polytetrafluoroethylene.

Next, the auxiliary material of the medical protective clothing according to the present invention will be described. The auxiliary material includes a sewing thread, a wire fastener 11, a rubber band, a waterproof pressure-bonding tape and the like.

As the sewing thread, a polytetrafluoroethylene sewing thread having a fineness of 1200 to 2400 dtex per thread, for example, a sewing thread manufactured by Jiangsu Huayue Textile New Materials Technology Co., Ltd. is used.

As the wire fastener 11, a high temperature resistant waterproof wire fastener made of a fluororesin material is used. For example, it may be provided at a position corresponding to the chest of the upper garment so that a medical worker such as a doctor or a nurse can easily wear protective clothing. As the wire fastener, a wire fastener manufactured by Shanghai Yoshida Lago Co., Ltd. may be used.

As the rubber band, a high temperature resistant waterproof rubber band made of a polyurethane material is used. The rubber band may be provided, for example, on the cuffs, hem, waste, etc. of the medical protective clothing in order to enhance the sealing property of the medical protective clothing. The rubber band is manufactured by Zhejiang Yongjia County Co., Ltd.

The fabric of the medical protective clothing provides high protection against highly infectious viruses or bacteria, but if the cuffs, hem, etc. of the medical protective clothing are not sufficiently sealed, the doctor,
Healthcare workers such as nurses may be infected. In preparation for a situation in which medical personnel such as doctors and nurses are infected when the rubber bands on the cuffs and hem are effective, in the present invention, the rubber bands are also applied to the elbows and knees of the medical protective clothing. Is provided.

The present invention is not limited to the above-mentioned installation form of the rubber band, and is not particularly limited as long as the sealing effect can be obtained. For example, when the rubber band is provided on the elbow, two rubber bands are provided and may be tightened by a medical worker such as a doctor or a nurse by himself / herself, or a rubber with a hole. One band may be used in combination with a button sewn on medical protective clothing, or a ring-shaped rubber band may be used.

When medical personnel such as doctors and nurses enter a place where bacteria or viruses with high risk of infection are present, they can tighten the rubber bands provided on the elbows and knees of the medical protective clothing to themselves. Further guarantees are obtained for your safety.

As the waterproof crimping tape, a waterproof crimping tape made of a high temperature resistant fluororesin material, for example, a transparent crimping tape made of a fluororesin is used. In order to prevent bacteria or viruses from entering the medical protective clothing from the seams, the edges of the parts are overlocked using an overlock sewing machine, and the sewing thread of the medical protective clothing is made of fluororesin transparent crimping tape. Is provided. The fluororesin transparent crimping tape is crimped to the sewing machine thread by a hot press method, and the tape crimping may be performed by a crimping machine, and the width of the fluororesin transparent crimping tape is about 1 cm.

Traditionally, medical protective clothing is generally not provided with pockets to prevent the entry of bacteria and viruses. This is because the seams at the positions of the sewing threads used when processing pockets increase the possibility of bacteria and viruses entering, reducing the local strength of medical protective clothing. In the present invention, a transparent pressure-bonding tape made of fluororesin is provided on the sewing thread, and a medical protective material based on polytetrafluoroethylene, which is more excellent in both protective effect and strength, is used for the fabric. Problem is avoided. Thereby, in the present invention, the medical protective clothing is provided with at least one pocket, and the fabric of the pocket is a medical protective material based on polytetrafluoroethylene. Preferably, a wire fastener is provided at the opening of the pocket.

The method for manufacturing the medical protective clothing according to the present invention is as follows.
After the above-mentioned medical protective material and auxiliary material based on polytetrafluoroethylene are selected, medical protective clothing is designed if desired, and then cut and sewn, and sewing is completed or repeatedly used. Disinfect and sterilize medical protective clothing (for example, disinfect and sterilize with an irradiation method (cobalt 60 or electronic accelerator) based on the standards established by the China Food and Drug Administration, and pass the test. Use if available).

As a result of testing medical protective clothing using appropriate measuring methods and devices based on relevant technical standards in the art, the characteristic parameters described below are obtained.
The thickness of the dough is about 0.1 cm, the weight per unit area is 100 to 200 g / m ² , the gas permeability is 2500 g / m ³ d or more, and the breaking strength is 400 N or more in the weft direction. The warp direction is 400 N or more, the breaking elongation is 4 to 8%, the wear resistance is 4000 times or more, the number of puncture resistance is 500 times or more, the surface moisture resistance is 3rd grade or more, and water is not used. Permeability is 20 KPa or higher, liquid permeability is grade 3 or higher, liquid repellency is grade 3 or higher, virus impermeable is 20 KPa or higher, and synthetic blood permeability (class 2-5) is 20 KPa. As described above, the impermeability of dry and wet bacteria is grade 3 or higher, the bacterial aerosol filtration performance is 99.99% or higher, the tick density is 7 uc / m ² or lower, the flame retardancy is higher than 70, and the airtightness is high. The allowable pressure drop is less than 20%, the electrostatic damping performance is 0.5 to 0.01, and the charge amount is 0.6 to 0.1.
The filtration efficiency is 99.9% or more, the moisture permeability is 3000 g / cm 2.d or ^more , the temperature resistance range is -100 to 248 ° C, the flame-retardant damage length is 10 mm or less, and 30 It can be used repeatedly more than once.

The most obvious advantage of the medical protective clothing of the present invention is that the protective effect can be obtained only by wearing it once, it does not feel hot and humid after wearing it, and it can be used repeatedly 30 times or more if it is disinfected and sterilized. That is.

The medical protective clothing of the present invention is configured as follows to obtain the above-mentioned obvious advantage of being reusable. The polytetrafluoroethylene-based medical protective material used has a strength in both the warp and weft directions exceeding 400 N, which is eight times the disposable protective dose standard (50 N). Fluororesin wire fasteners, polytetrafluoroethylene sewing threads, and transparent crimping tape made of fluororesin are used, and high strength, high temperature resistance, waterproofing, and other functionality can be obtained due to the unique characteristics of the material. Therefore, medical protective clothing can be used repeatedly if it is disinfected and sterilized by an irradiation method after use.

Next, a medical protective clothing according to the present invention, a medical protective material based on polytetrafluoroethylene, and a method for producing the same will be described with reference to some examples. Unless otherwise specified, the materials, reagents, and the like used in the examples described later are all commercially available products, or can be manufactured with reference to related technical documents. For example, the water-soluble polyacrylic acid emulsion is manufactured by Shandong Seisen New Materials Co., Ltd., titanium dioxide is manufactured by Hebei Rika Biotechnology Co., Ltd., and Kaolin is Sagawa City Junda Paper Co., Ltd. The PF165A thickener is a high-performance coating thickener manufactured by SNF of France, and the cross-linking agent TAC is 99% triallyl cyanurate manufactured by Shanghai Hoseki Chemicals Co., Ltd. The multipurpose high-speed surface affinity WIN-055 is manufactured by Suzhou Weining Chemical Co., Ltd., and the A651-20 thermosetting adhesive is manufactured by Duplex New Materials Technology (Shanghai) Co., Ltd. It is a thing.

(Example 1)
In this embodiment, a medical protective material based on polytetrafluoroethylene is provided. As shown in FIGS. 1 and 3, the polytetrafluoroethylene fiber woven fabric 1 is included, and the polytetrafluoroethylene microporous film 3 is bonded to both outer and back surfaces of the polytetrafluoroethylene fiber woven fabric 1, and the polytetrafluoroethylene fiber woven fabric 1 is bonded. A colored labeling tape 4 is woven into the middle portion of 1 or a specific position, and the colored labeling tape 4 is woven into a polytetrafluoroethylene fiber woven fabric 1 using colored polytetrafluoroethylene filaments. The foamed adhesive layer 2 is provided between the polytetrafluoroethylene fiber woven fabric 1 and the polytetrafluoroethylene microporous membrane 3.

Specifically, the primary color 111dtex polytetrafluoroethylene long fiber (film split method) and blue polytetrafluoroethylene long fiber (film split method) manufactured by Jiangsu Huayu Spinning New Materials Technology Co., Ltd., Taiwan Polytetrafluoroethylene fiber woven fabric is woven in a rapier weaving machine manufactured by Chungzhou Weaving Machinery Co., Ltd. of China Spinning Machinery Co., Ltd. using 0.1 mm stainless steel yarn manufactured by Nan Wei Co., Ltd. as a material. Here, when warping, blue polytetrafluoroethylene filaments with a width of 10 mm are lined up at a position where the warp axis width is 77 cm, and one stainless steel thread is woven into the warp axis at intervals of 5 mm to warp. The menstrual velocity is 160 m / min. A plain weave structure is used for the polytetrafluoroethylene fiber woven fabric, the weft density is 296 × 256 lines / 10 cm, the cloth width is 150 cm, the processing speed of the loom is 350 rpm, and a humidifier is installed at the time of weaving.

In the water-washing width-out machine manufactured by Wuxi Kaidai Weaving Machinery Co., Ltd., the water-washing width-out is arranged, the processing speed is 60 m / min, and the width-out temperature is 110 ° C.

A polytetrafluoroethylene microporous membrane is bonded to both the outer and back surfaces of the arranged polytetrafluoroethylene fiber woven fabric by a foam coating laminating method. The polytetrafluoroethylene microporous membrane used has a pore diameter of 20 nm and a thickness of 0.01 mm.

Here, the foam concentration of the foam generator is 40 g / l, the foam diameter is 0.5 mm, the foam generation ratio is 1: 2.5, the processing speed of the coating machine is 10 m / min, and the roll. The pressure is 6 kg / cm ² , the temporary drying temperature is 60 ° C, and the main drying temperature is 100 ° C.

The foam adhesive layer is composed of 40% water-soluble polyacrylic acid emulsion, 8% titanium dioxide, 7% kaolin, 1% PF165A thickener, 1% crosslinker TAC, and WIN-0553, a high-speed surface affinity for multiple purposes. , A651-20 thermosetting adhesive 1%, ammonia water 1%, the rest is water.

As a result of the test, the polytetrafluoroethylene-based medical protective material produced by the above method has a fabric thickness of 0.11 cm and a longitudinal strength (transverse breaking strength) of 850 N. The weft strength (breaking strength in the weft) is 650 N, the warp elongation is 5.4%, the weft elongation is 3.7%, and the gas permeability is 3000 g / m. 2.d, water pressure resistance is ²⁴⁰ kPa, moisture permeability is 4000 g / ^m 2.24 h, microbial impermeable (wet) is 3.8 (IB), and water impermeable is 27 (cmH). ₂ O).

(Example 2)
In this embodiment, a medical protective material based on polytetrafluoroethylene is provided. As shown in FIGS. 2 and 3, the polytetrafluoroethylene fiber woven fabric 1 is included, and the polytetrafluoroethylene microporous film 3 is bonded to the outer surface of the polytetrafluoroethylene fiber woven fabric 1 to form the polytetrafluoroethylene fiber woven fabric 1. A colored labeling tape 4 is woven into an intermediate portion or a specific position, and the colored labeling tape 4 is woven into a polytetrafluoroethylene fiber woven fabric 1 using colored polytetrafluoroethylene filaments. The foamed adhesive layer 2 is provided between the polytetrafluoroethylene fiber woven fabric 1 and the polytetrafluoroethylene microporous membrane 3.

Specifically, the primary color 389dtex polytetrafluoroethylene long fibers (film split method) and orange polytetrafluoroethylene long fibers (film split method) manufactured by Jiangsu Huayu Spinning New Materials Technology Co., Ltd. Polytetrafluoroethylene fiber woven fabric is woven in a rapier weaving machine manufactured by Zhengzhou Weaving Machinery Co., Ltd. of China Spinning Machinery Co., Ltd. using 0.5 mm stainless steel yarn manufactured by Taiwan South Weft Co., Ltd. as a material. Here, at the time of warping, orange polytetrafluoroethylene filaments having a width of 15 mm are arranged at a position where the warp axis width is 77 cm, and one stainless steel thread is woven into the warp axis at intervals of 50 mm. The warping speed is 180 m / min. A twill weave structure is used for the polytetrafluoroethylene fiber woven fabric, the weft density is 551 × 433 lines / 10 cm, the cloth width is 180 cm, the processing speed of the loom is 350 rpm, and a humidifier is installed at the time of weaving.

In the water-washing width-out machine manufactured by Wuxi Kaidai Weaving Machinery Co., Ltd., the water-washing width-out is arranged, the processing speed is 55 m / min, and the width-out temperature is 110 ° C.

The polytetrafluoroethylene microporous membrane is bonded to the outer surface of the arranged polytetrafluoroethylene fiber woven fabric by a foam coating laminating method. The polytetrafluoroethylene microporous membrane used has a pore diameter of 70 nm and a thickness of 0.03 mm.

Here, the foam concentration of the foam generator is 55 g / l, the foam diameter is 4 mm, the foam generation ratio is 1: 3.5, the processing speed of the coating machine is 20 m / min, and the roll pressure is. It is 10 kg / cm ² , the temporary drying temperature is 85 ° C., and the main drying temperature is 130 ° C.

The foam adhesive layer is composed of 50% water-soluble polyacrylic acid emulsion, 10% titanium dioxide, 10% kaolin, 2% PF165A thickener, 2% crosslinker TAC, and WIN-0555, a high-speed surface affinity for multiple purposes. , A651-20 thermosetting adhesive 3%, ammonia water 2%, the rest is water.

As a result of the test, the polytetrafluoroethylene-based medical protective material produced by the above method has a fabric thickness of 0.12 cm, a warp direction strength of 860 N, and a weft direction strength. Is 700 N, the warp elongation is 5.8%, the weft elongation is 5.3%, the gas permeation is 2800 g / m ² · d, the water pressure resistance is 240 kPa, and the permeability is The wettability is 3800 g / ^m 2.24 h, the microbial impermeable (wet) is 3.8 (IB), and the water impermeable is 29 (cmH ₂ O).

(Example 3)
In this embodiment, a modified example of a medical protective material based on polytetrafluoroethylene is provided. As shown in FIG. 4, after the polypropylene melt blown nonwoven fabric is bonded to both the outer and back surfaces of the polytetrafluoroethylene fiber woven fabric 1, the polytetrafluoroethylene microporous membrane 3 is further reattached. The present invention is not limited to this, and as shown in FIG. 5, after the polypropylene melt blown nonwoven fabric is bonded only to the outer surface of the polytetrafluoroethylene fiber woven fabric 1, the polytetrafluoroethylene microporous membrane 3 is further bonded. May be combined.

Specifically, the primary color 111-389 dtex polytetrafluoroethylene long fiber and red polytetrafluoroethylene long fiber manufactured by Jiangsu Huayu Spinning New Materials Technology Co., Ltd., manufactured by Taiwan South Weft Co., Ltd. Polytetrafluoroethylene fiber woven fabric is woven in a rapier weaving machine manufactured by Chungzhou Weaving Machinery Co., Ltd. of China Spinning Machinery Co., Ltd. using 1 to 0.5 mm stainless steel thread as a material. Here, at the time of warping, red polytetrafluoroethylene filaments having a width of 10 to 15 mm are arranged at a position where the warp axis width is 77 cm, and one stainless steel thread is provided on the warp axis at intervals of 5 to 50 mm. The warping speed is 160 to 180 m / min. A satin weave structure is used for the polytetrafluoroethylene fiber woven fabric, the warp direction density is 296 to 551 lines / 10 cm, the weft direction density is 256 to 433 lines / 10 cm, the cloth width is 165 cm, and the processing of the loom. The speed is 350 rpm and a humidifier is installed during weaving. The weight of the meltblown non-woven fabric is 10 to 45 g / m ² , and it is performed by the foam coating laminating method. The polytetrafluoroethylene microporous membrane has pores having a pore diameter of 20 to 70 nm and a thickness of 0.01 to 0.03 mm. The material performance of the modified example of the medical protective material based on polytetrafluoroethylene according to this embodiment is that the thickness of the woven fabric is 0.13 cm, the warp strength is 760 N, and the weft strength. Is 570N, the burst strength is 480N, the woven fabric waterproof performance is class 4.5, the filtration efficiency is 99.5%, and the blood is impermeable.

(Example 4)
In this embodiment, medical protective clothing is provided. Original color 350dtex polytetrafluoroethylene long fiber (film split method) and orange polytetrafluoroethylene long fiber (film split method) manufactured by Jiangsu Huayu Spinning New Materials Technology Co., Ltd., manufactured by Taiwan Nanpo Co., Ltd. Polytetrafluoroethylene fiber woven fabric is woven in a rapier weaving machine manufactured by Chungzhou Weaving Machinery Co., Ltd. of China Spinning Machinery Co., Ltd. using the 0.2 mm stainless steel yarn produced as a material. Here, at the time of warping, two orange polytetrafluoroethylene filaments having a width of 1 cm are woven in the weft direction of 10 cm and 25 cm. One stainless steel thread is woven into the warp shaft at intervals of 20 mm, and the warping speed is 170 m / min. A leno weave structure is used for the polytetrafluoroethylene fiber fabric, the weft density is 350 x 350 lines / 10 cm, the cloth width is 160 cm, the processing speed of the loom is 350 rpm, and a humidifier is installed at the time of weaving. ..

In the water-washing width-out machine manufactured by Wuxi Kaidai Weaving Machinery Co., Ltd., the water-washing width-out is arranged, the processing speed is 60 m / min, and the width-out temperature is 110 ° C.

A polytetrafluoroethylene microporous membrane is bonded to both the outer and back surfaces of the arranged polytetrafluoroethylene fiber woven fabric by a foam coating laminating method. The polytetrafluoroethylene microporous membrane used has a pore diameter of 45 nm and a thickness of 0.02 mm.

Here, the foam concentration of the foam generator is 50 g / l, the foam diameter is 0.2 mm, the foam generation ratio is 1: 3, the processing speed of the coating machine is 15 m / min, and the roll pressure is. It is 8 kg / cm ² , the temporary drying temperature is 70 ° C., and the main drying temperature is 120 ° C.

The foam adhesive layer is composed of a water-soluble polyacrylic acid emulsion 45%, titanium dioxide 9%, kaolin 8%, PF165A thickener 2%, cross-linking agent TAC 1%, and multipurpose high-speed surface affinity agent WIN-0554%. , A651-20 thermosetting adhesive 2%, ammonia water 1%, the rest is water.

Hat parts, upper garment parts, and lower garment parts are designed and cut in S size, and sewn using a high-speed sewing machine manufactured by Tajima Kogyo Co., Ltd.

Using a medical protective clothing crimping machine manufactured by CHTC Heavy Industry Co., Ltd., tape crimping is performed on all seams of the protective clothing. To.

The medical protective clothing sewn as described above is sterilized, disinfected, and antivirally treated.

The anti-virus treatment process is disinfected and sterilized by an irradiation method (cobalt-60 or electron accelerator) based on the standards established by the China Food and Drug Administration, and if passed, it is used.

The physical properties and impermeable performance of the medical protective clothing manufactured as described above are such that the thickness of the woven fabric is 0.11 mm, the breaking strength in the warp direction and the weft direction is 610N and 550N, respectively, and the warp direction and the weft. The rupture elongation in the direction is 5.8% and 4.5%, respectively, the moisture permeability is 5500 g / m ² · d, the rupture strength of the seam is 450 N, the rupture strength is 420 N, and the electrostatic damping performance. Is 0.2S, the charge amount is 0.4uc, the synthetic blood permeability is tertiary, the filtration efficiency is 99.95%, the temperature resistance range is -100 to 248 ° C, and it is difficult. The burn damage length is 7 mm and can be repeated 30 times or more.

As can be seen from the above description, according to the medical protective material based on polytetrafluoroethylene and the method for producing the same, and the medical protective clothing according to the present invention, the polytetrafluoroethylene fiber is used as the cloth for the medical protective clothing. Medical protective material containing woven fabric and based on polytetrafluoroethylene is used, and it has high strength, water repellency, oil repellency, antibacterial, fireproof and flame retardant, wear resistance, self-cleaning property, and is not affected by ultraviolet rays. It has unique chemical properties such as strong acid / strong base and strong oxidant resistance. Further, since conductive fibers are provided, conductivity that does not change with time can be obtained. The protective clothing meets the performance requirements stipulated in the medical device industry standard YY / T0506.2-2016 and has excellent performance. Since the polytetrafluoroethylene microporous membrane and the meltblown non-woven fabric are provided, the protective effect can be achieved more effectively and safely, and cross-infection to medical staff can be avoided due to virus, respiratory infection, or the like. Since the colored labeling tape is woven into the polytetrafluoroethylene fiber fabric, the technical problems caused by the weaving process of the colored labeling tape being transferred to the subsequent process are avoided, and the disinfection and smoking process after repeated use can be used. The colored marker tape does not come off and stains do not adhere.

Claims (17)

A medical protective material based on polytetrafluoroethylene, which comprises a polytetrafluoroethylene fiber woven fabric and a polytetrafluoroethylene microporous film covering one or both sides of the polytetrafluoroethylene fiber woven fabric. The polytetrafluoroethylene fiber woven fabric is woven using a primary color or colored polytetrafluoroethylene filament having a fineness of 111 to 389 dtex, or a primary color or colored poly having a fineness of 1.1 to 3.3 dtex and a length of 30 to 70 mm. The first aspect of the present invention is that the short fibers are woven by themselves using tetrafluoroethylene short fibers, or are woven by blending the primary color or colored polytetrafluoroethylene short fibers with high temperature resistant fibers. The described polytetrafluoroethylene-based medical protective material. The polytetrafluoroethylene according to claim 1, wherein the polytetrafluoroethylene fiber woven fabric has a warp direction density of 296 to 551 lines / 10 cm and a weft direction density of 256 to 433 lines / 10 cm. Protective material for medical use. The polytetrafluoroethylene according to claim 1, wherein conductive fibers are provided on the polytetrafluoroethylene fiber woven fabric, and the conductive fibers are metal yarns, carbon fiber yarns, graphite long fibers or short fibers. Medical protective material based on. The polytetra according to claim 1, wherein a colored labeling tape is woven into the polytetrafluoroethylene fiber woven fabric, and the colored labeling tape is woven from colored polytetrafluoroethylene long fibers or short fibers. Protective material for medical use based on fluoroethylene. The polytetrafluoroethylene microporous membrane has a plurality of pores, the pore diameter of the pores is 20 to 70 nm, and the thickness of the polytetrafluoroethylene microporous membrane is 0.01 to 0.03 mm. The medical protective material based on polytetrafluoroethylene according to claim 1. The medical protective material based on polytetrafluoroethylene according to claim 1, wherein the polytetrafluoroethylene fiber woven fabric has a plain weave, twill weave, satin weave or leno weave structure. The medical protection based on polytetrafluoroethylene according to claim 1, wherein a foamed adhesive layer is provided between the polytetrafluoroethylene fiber woven fabric and the polytetrafluoroethylene microporous membrane. material. The composition of the foamed adhesive layer (based on% by weight) is 40 to 50% of a water-soluble polyacrylic acid emulsion, 8 to 10% of titanium dioxide, 7 to 10% of kaolin, 1 to 2% of a PF thickener, and 1 of a cross-linking agent. The poly according to claim 8, wherein the poly is ~ 2%, a surface affinity agent 3-5%, an A651-20 thermosetting adhesive 1-3%, an ammonia water 1-2%, and the rest is water. A medical protective material based on tetrafluoroethylene. A meltblown nonwoven fabric is provided between the polytetrafluoroethylene fiber fabric and the polytetrafluoroethylene microporous membrane, and the polytetrafluoroethylene fiber fabric, the meltblown nonwoven fabric, the foam adhesive layer, and the polytetrafluoroethylene microporous membrane are provided. Is a medical protective material based on polytetrafluoroethylene according to any one of claims 1 to 9, wherein the material is laminated in this order. The medical protective material based on polytetrafluoroethylene according to claim 10, wherein the meltblown nonwoven fabric is a polyester meltblown nonwoven fabric or a polypropylene meltblown nonwoven fabric and has a weight of 10 to 45 g / m ² . Step S1 for weaving a fabric using primary color polytetrafluoroethylene long fibers or short fibers, colored polytetrafluoroethylene long fibers or short fibers, and conductive fibers as materials, and
Step S2 of arranging the fabric to obtain a polytetrafluoroethylene fiber woven fabric, and
The polytetrafluoro according to any one of claims 1 to 9, comprising the step S3 of binding the polytetrafluoroethylene microporous film to the polytetrafluoroethylene fiber woven fabric by a foam coating laminating method. A method for manufacturing a protective material for medical use based on ethylene. The method for producing a medical protective material based on polytetrafluoroethylene according to claim 12, wherein the arrangement includes washing with water and squeezing in S2. In S3, the parameters of the foam coating laminating method are that the foam concentration of the foam generator is 40 to 55 g / l, the foam diameter is 0.5 to 4 mm, and the foam generation ratio is 1: 2.5 to 1. : 3.5, the processing speed of the coating machine is 10 to 20 m / min, the roll pressure is 6 to 10 kg / cm ² , the temporary drying temperature is 60 to 85 ° C., and the main drying temperature is 100 to 100. The method for producing a medical protective material based on polytetrafluoroethylene according to claim 12, wherein the temperature is 130 ° C. Step S10 for weaving a fabric using primary color polytetrafluoroethylene long fibers or short fibers, colored polytetrafluoroethylene long fibers or short fibers, and conductive fibers as materials.
Step S20 to arrange the fabric to obtain a polytetrafluoroethylene fiber woven fabric, and
Including step S30 in which the meltblown nonwoven fabric is bonded to one or both sides of the polytetrafluoroethylene fiber woven fabric and then the polytetrafluoroethylene microporous film is bonded to the meltblown nonwoven fabric by the method of foam coating laminating.
In S20, the arrangement includes washing with water and squeezing, and in S30, the parameters of the foam coating laminating method are that the foam concentration of the foam generator is 40 to 55 g / l and the foam diameter is 0.5 to 4 mm. Yes, the foam generation ratio is 1: 2.5 to 1: 3.5, the processing speed of the coating machine is 10 to 20 m / min, the roll pressure is 6 to 10 kg / cm ² , and the temporary drying temperature is The method for producing a medical protective material based on polytetrafluoroethylene according to claim 10 or 11, wherein the temperature is 60 to 85 ° C. and the drying temperature is 100 to 130 ° C. The cloth is a medical protective clothing based on the polytetrafluoroethylene according to any one of claims 1 to 11. Includes sewing thread, wire fasteners, rubber bands, waterproof crimping tape as auxiliary materials,
The sewing thread is a polytetrafluoroethylene sewing thread having a fineness of 1200 to 2400 dtex per thread, the wire fastener is made of fluororesin, the rubber band is made of polyurethane, and the waterproof pressure-bonding tape is made of fluorine. The medical protective clothing according to claim 16, wherein the transparent crimping tape is made of resin.

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