RU176287U1 - SCREEN KNITTED GLOVE - Google Patents

Abstract

The utility model relates to protective devices for hands or hands, in particular to shielding gloves made of knitwear, designed to protect personnel from electromagnetic fields of the radio frequency range (EMF RF), and can be used as part of a shielding set of special clothing.

The shielding knitted glove consists of a body, fingers and a wristband, the outer layer of which is made of at least 33 tex aramid yarn of linear density and 70 tex linear density tinsel thread, consisting of a polyamide yarn wrapped in a silver plated flattened copper wire with a diameter of 0.08 mm, with the content in the tinsel yarn is 10.0 and 90.0 wt.%, respectively, and the inner insulating layer is made of cotton yarn.

Moreover, aramid yarn, tinsel and cotton yarn are used in a ratio of 30:50:20 wt.%, Respectively.

At the same time, a multifilament polyamide thread of linear density 6.7 tex with a twist of 200 cr / m was used as a polyamide yarn.

In this case, the inner insulating layer is made of cotton yarn with a linear density of 20 tex in 2 additions.

In this case, the wristband is made from 12 to 15 cm high.

The technical result of the utility model is the creation of a shielding knitted glove that is easy to manufacture and has a high degree of protection against electromagnetic fields in the radio frequency range and enhanced operational properties. 4 s.p. f-ly, 1 ill.

Description

The utility model relates to protective devices for hands or hands, in particular to shielding gloves made of knitwear, designed to protect personnel from electromagnetic fields of the radio frequency range (EMF RF), and can be used as part of a shielding set of special clothing.

The prior art protective material and protective products from it, including gloves, for working in conditions of external influences, such as electromagnetic field of high frequency ranges, electric field of industrial frequency, induced and step voltage and / or electric arc.

The material is characterized in that it is made of an electrically conductive fabric consisting of threads based on meta-aramid fiber based on poly m-phenylene isophthalamide and / or its derivatives and stainless metal staple and / or monofilament fibers with a ratio of from 70:30 to 30:70 wt. hours respectively, with a density of 250 to 400 g / m ² and heat resistance at a minimum density of at least 13 cal / cm ² .

Moreover, to ensure corrosion resistance, the metal stainless steel fiber is made of an iron-based stainless alloy with an additive selected from the series: chromium, nickel, titanium, carbon, manganese, copper, boron, vanadium, niobium, aluminum, tungsten, and molybdenum.

The fabric is made with the possibility of dyeing due to the use of aramid fiber of the corresponding shade, in the weaving of the fabric linen or twill is used (RU 2612696 C2, class C08J 5/04, D01F 8/04, 03/13/2017).

The disadvantage of this technical solution is the duration and multi-operation process of obtaining the finished product, including the production of fabric, cutting and sewing gloves. The advantages of a knitted glove are in the direct manufacture of the product, its lightness, comfort, elasticity, a high degree of fit of the hand, which allows the user to work in it with small parts of any complexity.

Known protective knitted glove, which is a composite product consisting of interconnected inner and outer gloves with a wristband.

Between the inner and outer gloves there is a membrane layer, the outer glove is connected on a glove machine of 10-15 classes, the inner one is on a machine of 7-10 classes, the thickness of the membrane layer is from 20 to 60 microns. All three parts of the glove are interconnected using hot-melt adhesive applied to the membrane on both sides. Moreover, a pigmented or non-pigmented hydrophilic polyurethane membrane can be used in the product.

The inner glove is made of various types of polyester yarn, polyacrylonitrile fiber (PAN) yarn, blended yarn combining natural wool with PAN in various percentages.

The outer glove, depending on the purpose, can be made from various types of synthetic raw materials. It is possible to use various types of polyamide yarns, para-aramid and meta-aramid yarns.

To reduce frictional properties, a dot pattern is applied on the inner side (palm and fingers) of the outer layer of the composite glove using a screen-printing method using plastisol or silicone paints, which does not cover more than 15% of the surface.

At the same time, it is possible to use another glove with shortened fingers made of the same materials as the outer layer of the composite glove to which artificial leather pads or specially stamped plastic pads, repeating the physiological structure of the human hand, are sewn.

A latex thread braided with polyamide or polyester threads (RU 153173 U1, class A47D 13/08, 07/10/2015) is additionally laid in the glove wristband.

The glove is designed to protect the user's hands from exposure to cutting objects, thermal and electrical effects, from exposure to chemicals, while the glove has moisture repellent properties.

A disadvantage of the known glove is that it is not shielded from EMF RF, since it does not contain electrically conductive yarn and threads. In addition, the glove is too complicated to manufacture.

Knitted glove is also known to protect a person from electric shock of high voltage. The glove contains a working part and a cuff. The working part is made of a yarn containing a core of at least one tinsel yarn of linear density of at least 50 tex, at least one carbon multifilament yarn of linear density, at least 100 tex and at least one aramid multifilament yarn.

The threads in the core are arranged in parallel. The core is twisted in two opposite directions with a degree of winding of at least 10 turns / cm with aramid filaments. The cuff of the glove is made of tinsel yarn of at least 6 additions and a height of at least 10 mm.

As an aramid yarn, yarns based on polybenzimidazole terephthalamide or copolybenzimidazole terephthalamide or copolyparaphenylene terephthalamide (RU 2127781 C1, CL D04B 1/28, 20.03.1999) are used.

The glove withstands up to 860 abrasion cycles and has an electrical resistance of not more than 30 ohms.

A disadvantage of the known glove is that it is intended only to protect against electric shock, but does not shield against RF EMF.

The objective of the proposed utility model is to address these shortcomings of the known technical solutions.

The technical result of the utility model is the creation of a shielding knitted glove that is easy to manufacture and has a high degree of protection against electromagnetic fields in the radio frequency range and enhanced operational properties.

This technical result is achieved by the fact that the shielding knitted glove consists of a body, fingers and a wristband, the outer layer of which is made of aramid yarn with a linear density of at least 33 tex, and a tinsel thread of linear density 70 tex, consisting of a polyamide yarn wrapped in a silver-plated copper-plated flattened wire with a diameter of 0.08 mm, with their content in tinsel yarn 10.0 and 90.0 wt. %, respectively, and the inner insulating layer is made of cotton yarn.

Moreover, aramid yarn, tinsel and cotton yarn are used in a ratio of 30:50:20 wt.%, Respectively.

At the same time, a multifilament polyamide thread of linear density 6.7 tex with a twist of 200 cr / m was used as a polyamide yarn.

In this case, the inner insulating layer is made of cotton yarn with a linear density of 20 tex in 2 additions.

In this case, the wristband is made from 12 to 15 cm high.

A distinctive feature of the proposed utility model is that when using an aramid yarn of linear density of at least 33 tex in combination with a tinsel thread of linear density 70 tex consisting of a multi-filament polyamide yarn wrapped in a silver-plated copper-plated flattened wire with a diameter of 0.08 mm, and also the performance of the inner layer of cotton yarn with the stated ratios of raw materials, a synergistic effect of increasing the operational properties of the glove and fines protection from RF EMF.

The claimed utility model is illustrated in the drawing.

The drawing shows a General view of a shielding knitted glove.

The glove consists of a wristband 1, body 2 and fingers 3.

To create a grip of gloves with smooth surfaces, a point polymer coating of polyvinyl chloride (PVC) is applied to the palm side of the case and fingers.

The glove is made on glove machines mod. Ja 20, 13-15 class of the company QIANG SHENG (China) single-layer, five-fingered, one-piece.

In its production, the following types of yarn and threads are used:

for the outer (facial) layer:

- aramid yarn of linear density of at least 33 tex according to TU 9052-001-00302178-2011;

- tinsel thread of linear density 70 tex according to TU 14.12.30-004-00302178-2017;

for the inner insulating (back) layer:

- cotton yarn of linear density 20 tex in 2 additions according to GOST 9092;

for laying in a wristband:

- latex thread with a diameter of 0.3 mm, wrapped with polyester textured thread with a linear density of 16.7 tex according to TU 8147-003-00321945-99.

The glove sections are made with the following weaves: body 2 and fingers 3 — weave smooth plating on the basis of the smooth surface;

wristband 1 - with a false elastic weave in a 1: 1 rapport with the laying of a twisted latex thread in each knitting row.

As aramid yarn, metaaramide yarn made using Nomex (USA), Newstar (China) or Newwan (South Korea) fibers is used; para-aramid - using fibers of Kevlar and its modifications (USA), Twaron (Netherlands), Technora (Japan), Armos, Rusar, Arlan (Russia) or their mixtures in any ratio.

A tinsel string consists of a conductive core in the form of a tapered wire spirally imposed on a thread of insulating material.

As a conductive core used for wrapping insulating material, a thin tapered copper-plated silver-plated wire with a diameter of 0.08 mm was experimentally selected. Copper wire is produced in accordance with GOST 2112-79 "Round copper electrotechnical wire. Technical conditions. "

To obtain a flat section, it is flattened by drawing. When applying a thin layer of silver, the galvanic method is used: a copper wire is passed through an electrolyte saturated with silver. The silver content is 5% (about 3 microns of silver on the surface of the wire).

As an insulating material consisting of a fibrous base and which is a core, a polyamide thread of linear density 6.7 tex, multifilament (number of filaments 24) with a twist of 200 cr / m according to GOST 10063-93 was used.

The content of raw materials in the tinsel yarn is, wt.%: Multifilament polyamide yarn - 10.0, copper plated silver-plated wire - 90.0.

Aramid yarn, tinsel and cotton yarn when knitting is used in a ratio of 30:50:20 wt. % respectively.

The manufacturing technology of shielding gloves includes the following operations: 1) preparation of raw materials for knitting; 2) knitting gloves, turning it on the wrong side, quality control; 3) processing the upper edge of the wristband; 4) application of a dot coating of PVC on the palm of the hand and fingers; 5) quality control, technical grading.

The process of knitting patches of gloves is carried out in the following sequence:

- knitting fingers: little finger, middle, nameless, index;

- knitting a section from the base of the middle finger to the base of the thumb;

- knitting the thumb;

- knitting a section from the base of the thumb to the base of the wristband;

- knitting a wristband with a height of 12 to 15 cm.

Density of knitting gloves in the finished form:

the number of loop rows per 5 cm - at least 40;

the number of looped posts per 5 cm - at least 30.

The overcasting of the upper edge of the wristband is carried out by a five-thread overcasting seam with the number of stitches per 5 cm - at least 25 on an overlock sewing machine.

The application of a point coating of PVC on the palm of the hand and fingers of the glove is performed on the machine model PPA-1-K1, the process is carried out simultaneously with the formation of the glove.

Shielding gloves are made in the following sizes: 10, 12, 14.

EXAMPLE

For the manufacture of a shielding knitted glove of size 12, consisting of a body, fingers (smooth weaving on the base of the smooth surface, weaving) and a 12 cm high wristband (1: 1 false elastic weaving with rape latex thread in each row of knitting), the following types of raw materials were used: .

For the outer (front layer):

Newwan meta-aramid yarn (South Korea) with a linear density of 33 tex;

70 tex linear density tinsel filament, consisting of a multi-filament polyamide yarn (24 filaments), 6.7 tex linear density filament with a twist of 200 cr / m, wrapped in copper-plated silver-plated flat wire of 0.08 mm diameter, with a content of 10.0 in tinsel filament and 90.0 wt. % respectively.

For the inner insulating (back) layer: cotton yarn with a linear density of 20 tex in 2 additions.

For laying in a wristband: latex thread with a diameter of 0.3 mm, wrapped in polyester textured thread with a linear density of 16.7 tex.

Metaramid yarn, tinsel and cotton yarn when knitting was used in a ratio of 30:50:20 wt. % respectively.

The glove was made on a glove machine mod. Ja 20, 13th grade of QIANG SHENG company (China).

Simultaneously with the formation of the glove, a point polymer coating of PVC was applied to the palm side of the case and fingers on a machine model PPA-1-K1.

Tests of the obtained glove were carried out as part of a shielding set of protective clothing in accordance with GOST 12.4.172-2014.

The proposed shielding gloves as part of the kit has the following operational characteristics: shielding coefficient - 32.8 dB (according to GOST 12.4.305-2016 - not less than 30 dB); electrical resistance - 5.1 Ohms (according to GOST 12.4.305-2016 - no more than 10 Ohms); cut resistance - 10 N / mm.

Use of the utility model will make it possible to obtain a shielding knitted glove with high operational properties and reliable protection against RF EMF.

Claims (5)

1. A shielding knitted glove consisting of a body, fingers and a wristband, the outer layer of which is made of at least 33 tex aramid yarn of linear density and 70 tex linear density tinsel thread, consisting of a polyamide yarn wrapped in silver-plated copper-plated flattened wire with a diameter of 0.08 mm , when their content in the tinsel yarn is 10.0 and 90.0 wt.%, respectively, and the inner insulation layer is made of cotton yarn. 2. A shielding knitted glove according to claim 1, characterized in that aramid yarn, tinsel thread and cotton yarn are used in a ratio of 30:50:20 wt.%, Respectively. 3. A shielding knitted glove according to claim 1, characterized in that a multifilament polyamide thread of linear density 6.7 tex with a twist of 200 cr / m is used as a polyamide yarn. 4. A shielding knitted glove according to claim 1, characterized in that the inner insulating layer is made of cotton yarn of linear density 20 tex in 2 additions. 5. A shielding knitted glove according to claim 1, characterized in that the wristband is made from 12 to 15 cm high.

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