RU127318U1 - RESCUE SUIT FOR WORK UNDER CONDITIONS OF ACTION OF PATHOGENIC BIOLOGICAL AGENTS - Google Patents

Abstract

A lifeguard suit for working under conditions of pathogenic biological agents, including a hood, a jacket, trousers and shoes in the form of shoe covers, while the hood, jacket, trousers and shoe covers are made completely sewn, in front of the belt there is an inlet with a manhole appendix, and the front of the suit made of non-woven hydrophobic gas-tight material, and its back is made of non-woven gas-permeable material, shoe covers are made of hydrophobic material with a double sole, and the sleeves are made combined: from the wrists to the lower third of the shoulder are made of hydrophobic material, and above the non-woven gas-permeable material, in addition, in the hood around the perimeter of the front hole, on the outside of the sleeves on the wrists, the appendix hole on the belt, as well as on the inside of the sleeves and pant legs of the suit elements for sealing and / or adjusting the size of the suit, and the connections of its individual parts are obtained by heat or ultrasonic welding, or glued together with a substance - sealant, or by flashing with a thread with simultaneous or subsequent sealing seams with a sealant or protective adhesive tape, while the elements for sealing and / or adjusting the size of the overalls are made in the form of wings or their combination with elastic bands, the front part of the suit made of non-woven hydrophobic gas-tight material spunbond or CMC, and its back part made of gas-permeable Meltblown or Sontar material, characterized in that as a gas-permeable material a textile fibrous material with bioprotective properties based on natural and / or chemical

Description

The utility model relates to personal protective clothing of rescuers that protects against the effects of pathogenic biological agents (LBA) during rescue operations in all-weather conditions, in the foci of especially dangerous infections (OOI) and socially significant infections of natural or artificial origin (including acts bioterrorism).

The closest technical solution to the technical nature and the achieved result is a suit for protection against pathogenic biological agents, according to the patent of the Russian Federation for utility model No. 544519, Cl. А62В 17/00 (prototype), including a hood, jacket, trousers and shoes in the form of shoe covers, while the hood, jacket, trousers and shoe covers are made of all-stitched; in front of the belt there is an inlet with a hole-appendix, the front part of the suit is made of non-woven hydrophobic gas-tight material, and its rear part is made of non-woven gas-permeable material; shoe covers are made of hydrophobic material with a double sole, and the sleeves are made combined: from the wrist to the lower third of the shoulder from hydrophobic material, and above from non-woven gas-permeable material, in addition, into the hood around the perimeter of the front opening, on the outside of the sleeves on the wrists, manhole - appendix on the belt, as well as on the inside of the sleeves and legs of the suit attached elements for sealing and / or adjusting the size of the suit.

A disadvantage of the known suit is the relatively low bioprotective properties and poor thermal protection of the lower extremities from low temperatures.

The technical result of the utility model is to increase the reliability of the lifeguard lifeguard suit in bad weather at relatively low temperatures.

The specified technical result is achieved in that in a suit for protection against "biological agents, including a hood, jacket, pants and shoes in the form of shoe covers, according to a utility model, the hood, jacket, trousers and shoe covers are made completely sewn; in front of the belt there is an entrance hole with a hole -appendix, with the front part of the overalls made of non-woven hydrophobic gas-tight material, and the back of the suit made of non-woven gas-permeable material, in addition, a hood around the perimeter of the front hole, sleeve n the wrist, the belt with the manhole appendix, have elements for sealing.The sleeves and trousers on their inside are equipped with elements for regulating the size of the suit.The shoe covers are made of non-woven hydrophobic gas-tight material with a double sole.The sleeves are made combined - from the wrist to the lower third of the shoulder from the non-woven hydrophobic gas-tight material, above - from non-woven gas-permeable material.

The joints of the individual parts of the overalls are obtained by heat welding, or ultrasonic welding, or glued with a sealant, or by flashing with a thread with simultaneous or subsequent sealing of the joints with a sealant, special tape. Elements for sealing overalls are made in the form of a combination of rubber bands with backstage or backstage. Elements for regulating the size of the overalls are made in the form of wings, located on the inside of the suit.

The costume can be made of single-layer and multi-layer non-woven materials made using Spanbond and Spanlace technology. Moreover, these materials due to special impregnation, applying additional layers (lamination) or increasing the density of materials can be given additional properties, including hydrophobicity. For example, the front of the suit can be made of a hydrophobic laminated gas-tight non-woven spunbond material, and the back of a gas-permeable non-woven material such as meltblown, sontar, CMC, etc.

Spunbond is a non-woven material made from 100% polypropylene, which is used in various industries as a cheap substitute for more expensive fabrics and as a material for the manufacture of disposable clothing, including medical and technical. Material differs in ease of cut, unpretentiousness in storage. Spanbond can be produced in various densities (from 15 to 150 g / m2) and colors (white, black, brown, blue, green, beige, red, blue, pink, etc.). In addition, with the help of various additives it can be given additional properties: hydrophilicity, hydrophobicity, antistatic.

The non-woven material Meltblown (MELT BLOWN) is obtained from polypropylene microfibers with a thickness of 1-5 microns (from 0.01 to 0.2 dtex). Due to the thickness of the fibers, meltblown has significant advantages over traditional non-woven materials. These include greatly increased uniformity, both visual and physical, better coverage per surface unit, increased or complete water permeability with simultaneous breathability, as well as high filtration properties. Meltblown is characterized by a significant effect of filtration, adsorption and isolation. The fields of application of the material are greatly expanded due to the possibility of applying it to airtight substrates, such as non-woven materials, textile products, etc.

CMC (SMS) is a new generation of multilayer nonwovens. This material consists of three layers: a spunbond layer - a Meltblown barrier layer - a spunbond layer. Having all the positive properties of spunbond, CMC material has additional advantages:

- improved barrier properties

- improved strength characteristics;

- proximity to a cotton cloth according to tactile sensations.

It is produced by CMC with a density of 15-60 g / m2.

Sontara (an analog of the PALP, FABRIK 450 material) non-woven fabric made using spunlace technology. Composition: wood pulp 55% + PET 45%, density 40-65 g / m2. The material is ideally suited for sewing anti-plague protective clothing due to the following properties: the barrier properties are ensured due to the fact that the pores of this fabric are very small (less than 15 microns), and this eliminates the penetration of carriers of infection. Special water-repellent treatment makes this material completely impervious to liquids and at the same time does not reduce excellent breathability.

Higher bioprotective properties of the lifeguard costume are achieved through the use of a textile fibrous material with bioprotective properties based on natural and / or chemical fibers, including biologically active polyester fiber, obtained by modifying the fiber during crazing, with a linear density of at least 0.33 tex, and the linear density of the natural and / or chemical fiber is 0.33-0.51 of its linear density with the following components content wt.%:

Natural and / or chemical fiber 70-95

Biologically active polyester fiber 5-30.

Textile fibrous material can be made in the form of yarn, fabric, knitwear or non-woven fabric.

Insoles are inserted with heated insoles made of ethylene vinyl acetate or other elastic material, and a piezoelectric element made of piezoresin, for example, 2.5–5 mm thick polydimethylsiloxane, 10 × 10 mm in size is glued into the heel of the insole, while it is placed in a protective cover, and the heating thread is connected to at least one piezoelectric element located in the heel and / or toe area.

Figure 1 presents a diagram of the inventive protective suit of a lifeguard, front view, figure 2 is a rear view of the suit, figure 3 is an insole for shoe covers with heating.

The lifeguard suit for working under conditions of pathogenic biological agents (FIG. 1 and FIG. 2) includes a hood 1, a jacket 2, pants 3, shoes in the form of shoe covers 4. A hood 1, a jacket 2, pants 3 and shoe covers 4 are made completely sewn. On the front of the suit on the belt there is an inlet with a manhole appendix 5. The front of the suit 6 is made of a non-woven hydrophobic gas-tight material; and the back of the suit 7 is made of non-woven gas-permeable material.

Shoe covers 4 are made of non-woven hydrophobic gas-tight material with a double sole and a heated insole (Fig. 3). The insole is placed in shoe covers, in a protective cover 11, the heating thread 12 is connected to at least one piezoelectric element 13 located in the heel and / or toe area. In addition, the insole can be made of ethylene vinyl acetate or other elastic material, and a piezoelectric element made of polydimethylsiloxane (piezoresin) with a thickness of 2.5 ÷ 5 mm and a size of about 10 × 10 mm is glued into the heel of the insole. In addition, the cover can be made removable and made of polycotton.

Sleeves 8 are made combined: from the wrist to the lower third of the shoulder from a non-woven hydrophobic gas-tight material, and above - from a non-woven gas-permeable material. In addition, the hood 1 around the perimeter of the front opening, the sleeves 8 on the wrists, the belt with the manhole 5 have elements 9 for sealing the suit, located on its outer side and made in the form of wings. At the same time, a combination of sewn elastic with backstage can be used to seal the hood. On the inner side of the sleeves 8 and legs 10 of the suit are elements for regulating the size of the suit, made in the form of wings (not shown in the drawings).

The front part 6 of the suit can be made of non-woven hydrophobic gas-tight material spanbond; and the back part 7 of the suit can be made of non-woven gas-permeable material Meltblown, CMC, Sontara, etc.

The joints of the individual parts of the overalls are obtained by heat welding, or ultrasonic welding, or glued with a sealant, or by flashing with a thread with simultaneous or subsequent sealing of the joints with a sealant or protective tape.

Higher bioprotective properties of the lifeguard suit are achieved through the use of a textile fibrous material with bioprotective properties, which contains a biologically active polyester fiber (BAPE fiber), exhibits bioprotective properties: antimicrobial or fungicidal, or repellent, depending on which biologically active substance modifies this fiber in the process of crazing.

As a natural fiber, the material contains cotton or linen, or wool, as a chemical standard fiber - polyester or polyamide, or polyacrylonitrile, or viscose fiber.

The proposed material includes BAPE fiber, obtained by modifying the fiber, for example, triclosan or permethrin, in the process of crazing with a linear density of at least 0.33 tex. The known technology is based on the fundamental property of polymers to develop nanoporosity in the process of orientational drawing of polymers in special liquid media. Under these conditions, in the polymer, in the process of fiber formation, a system of interconnected nanopores (crazes) appears, filled with the surrounding liquid. With further stretching, the resulting microvoids are closed (collapsed). Modification of the polyester fiber by the crazing mechanism can be classified as nanotechnology, since the sizes of crazes in the fibers are of the order of tens of nanometers. The threshold thickness of craze-forming polyester fibers lies in the range of linear densities 0.12-0.17 tex.

A standard polyester fiber is obtained by extrusion of fiber preforms followed by orientation drawing, heat treatment, and other standard operations. Saturation of polyester fibers with target additives - biologically active substances, occurs when the fibers are wetted in the process of orientational drawing in a surfactant liquid with biologically active substances dissolved in it. With orientational drawing in the fiber, a system of interconnected crazes (nanopores) is formed, filled with a biologically active substance. In the obtained biologically active polyester fiber, the biologically active substance is located in the outer layer at a depth of not more than 1-1.2 μm and occupies less than 10% of the total fiber cross-section at the surface and therefore the BAPE fiber obtained by modification during crazing works more efficiently .

Textile fibrous material with bioprotective properties is made in the form of yarn, fabric, knitwear or non-woven fabric.

The suit can be additionally equipped with hand protection (rubber, latex, Kevlar, chain mail, etc. gloves); respiratory protection - a respirator; means of protection of the organs of vision - glasses - canned food when carrying out work related to direct contact with infectious agents of OOI (not shown in the drawings); additional means of protecting the legs - rubber boots during emergency operations, in the foci of OOI, in the field, etc.

A lifeguard suit for working under the action of pathogenic biological agents works as follows.

The lifeguard protective suit is put on in the following sequence. The suit is straightened and put on through the appendix 5 first, pants 3, and then a jacket 2 with a hood 1. From the inside of the sleeves 8 and trouser legs 10, the size of the suit is adjusted to suit the process of putting the suit on (the figures are not shown). After putting on the suit, the laser appendix 5 is rolled up and elements 9 (backstage) attached to the manhole are tied around the belt. After that, using the sealing elements 9 around the perimeter of the front opening of the hood and the sleeves 8 on the wrists, the suit is sealed in the indicated places of its fit. Before putting on a suit, when working with PBA, put on the first pair of gloves, as well as a respirator and canned glasses before putting on the hood. After fully putting on the costume, put on a second pair of gloves.

After working with PBA, the suit is treated with aerosol, irrigation or rubbing of the disinfectant solution, and after the time of its disinfection, the suit is removed outside the "infectious zone" or outbreak. To remove the suit, the elements 9 are loosened and the undressing process takes place in the reverse order. In this case, it is necessary to ensure that unprotected parts of the body do not touch the outside of the protective suit. The last elements of workwear remove the respirator and the inner pair of gloves.

The proposed textile fibrous material prevents the growth of bacteria, fungi and other microorganisms or repels blood-sucking insects, or acts against viruses and the like. Textile fibrous material is used for the manufacture of textile products for clothing for power structures, the Ministry of Emergencies, for medicine, for special clothing in the oil and gas, forestry, construction and other industries, as well as for active sports and in everyday life.

The proposed content of the components and the ratio of the linear densities of the biologically active polyester fiber and the basic standard natural and / or chemical fibers in the material according to the invention allows to achieve a technical result, namely, to enhance bioprotective properties while significantly reducing the consumption of expensive biologically active polyester fiber. A change in the content of components and the ratio of linear densities of fibers in the direction of decreasing or increasing leads to a weakening of bioprotective properties.

The proposed content of the components of the textile fibrous material is determined by the stability of the technological processes of its processing and preservation, high bioprotective properties during its operation.

The insole is heated through the cover 11 by means of a heating thread 12 connected to the piezoelectric element 13, with periodic pressure on which a direct current occurs. It is preferable that the piezoelectric element is fastened in the mid-heel region (two piezoelectric elements can be used in the model: in the heel region and in the forefoot region — in this case, the heating power is doubled). The use of piezoelectric elements as a heating element allows you to use insoles outdoors without risk to health, to constantly maintain a comfortable shoe temperature in the cold season. The maximum heating temperature is about 45 degrees. As a piezoelectric material, PZT (lead zirconate-titonate) can be used, transferred to a flexible PDMS (polydimethylsiloxane) sample 2.5-5 mm thick, (the so-called piezoresin). During deformation, this piezoelectric element generates an EMF (direct current electromotive force), sufficient to generate current (not more than 12 mA) and voltage (not more than 36 V). It is possible to use another similar piezoelectric element and piezoelectric. It is possible to use some other soft and flexible piezoelectric with an EMF sufficient to generate current (not more than 12 mA) and voltage (not more than 36 V), necessary for heating the insoles. The insole heating temperature depends on the characteristics of the piezoelectric, the pressure force on the piezoelectric element, the length of the heating thread and other factors. The material of the insole cover is polycotton, the cover is removable, which allows it to be washed as it becomes dirty.

With periodic pressure on the piezoelectric element 13, a current arises, which, passing along the heating filament 12, laid across the entire surface of the insole, heats it and transfers heat through the cover 11 to the user.

Claims (1)

A lifeguard suit for working under conditions of pathogenic biological agents, including a hood, a jacket, trousers and shoes in the form of shoe covers, while the hood, jacket, trousers and shoe covers are made completely sewn, the front of the belt has an entrance hole with a manhole appendix, and the front of the suit made of non-woven hydrophobic gas-tight material, and its back is made of non-woven gas-permeable material, shoe covers are made of hydrophobic material with a double sole, and the sleeves are made combined: from the wrists to the lower third of the shoulder are made of hydrophobic material, and above the non-woven gas-permeable material, in addition, in the hood around the perimeter of the front hole, on the outside of the sleeves on the wrists, the appendix hole on the belt, as well as on the inside of the sleeves and pant legs of the suit elements for sealing and / or adjusting the size of the suit, and the connections of its individual parts are obtained by heat or ultrasonic welding, or glued together with a substance - sealant, or by flashing with a thread with simultaneous or subsequent sealing seams with a sealant or protective adhesive tape, while the elements for sealing and / or adjusting the size of the overalls are made in the form of wings or their combination with elastic bands, the front part of the suit made of non-woven hydrophobic gas-tight material spunbond or CMC, and its back part made of gas-permeable Meltblown or Sontar material, characterized in that as a gas-permeable material a textile fibrous material with bioprotective properties based on natural and / or chemical fiber, including biologically active polyester fiber, obtained by modifying the fiber during the crazing process, with a linear density of at least 0.33 tex, and the linear density of natural and / or chemical fiber is 0.33-0.51 of its linear density at the following content components, wt.%: natural and / or chemical fiber 70-95, biologically active polyester fiber 5-30, and insoles are inserted insoles with heating from ethylene vinyl acetate or other elastic material, and a piezo is glued into the heel of the insole ement of pezoreziny example polydimethylsiloxane thickness of 2,5 ÷ 5 mm, size 10 × 10 mm, while it is placed in the protective case, and the heating filament is connected by at least one piezoelement located in the heel area and / or sock.

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