RU203648U1 - Four-layer FPP-15 half mask [RINIDI] - Google Patents

Abstract

The utility model relates to personal protective equipment for respiratory organs, and specifically to filtering respiratory half masks from the field of devices designed to protect the respiratory system from various impurities contained in the air, such as dust, microorganisms, aerosols and other harmful air components. with stitching along the contour and fasteners. Fasteners are equipped with size adjusters, the body is made of four layers, the first outer layer is made of synthetic breathable fabric, the second is in the form of an FPP-15 membrane with nanosilver, the third - “SMS” -layer is made of triple with two layers of spunbond and a meltblown layer between them, the fourth inner layer is made of cotton fabric, while the mask has additional stitching in the nose. The use of a half mask will allow the wearer, regardless of the anatomical features of his head, to adjust the mask for himself and not think about replacing it for more than a month. ease of breathing and lack of discomfort during its use.

Description

The utility model relates to personal protective equipment for respiratory organs, and specifically to filtering respiratory half masks from the field of devices designed to protect the respiratory system from various impurities contained in the air, such as dust, microorganisms, aerosols and other harmful air components.

Known mask for health workers (p. US No. 5699791, IPC A41D 13/11, 1997), the design of which provides for the use of rubber materials that facilitate putting on and fixing the mask on the face, provide a bag-like attachment for the chin of the mask wearer. The horizontal flex tabs allow you to create a three-dimensional mask that individually adapts to the face, and also allows you to create separate breathing areas around the wearer's nose and mouth.

The disadvantage of the known mask device is the impossibility of preventing the penetration of bacteria and viruses from the environment into the body of the mask wearer.

Known half mask for protection and / or treatment of the respiratory system (p. RU No. 187423, IPC A62B 18/02, 2016), which contains a body, flexible inserts, means for attaching the body to the head in the form of strings, means for attaching the body to the head in the form of a fastener - Velcro type "Nook & Loop", a means of attaching the body to the head in the form of an edging made of sticky material located along the perimeter of the body, an additional filter layer.

The disadvantage of the known half-mask device is difficulty in breathing, the impossibility of preventing the penetration of bacteria and viruses from the environment. facial expressions when wearing a half mask wearer will change, as a result, the tightness of the half mask is disturbed, channels appear between the wearer's face and the half mask, limited use for people with a non-standard skull size, only 1 additional filter layer, the impossibility of protection from all pathogenic microflora and viruses.

Known respirator with a half mask with a slit exhalation valve (item RU No. 2480257, IPC A62B 23/00, 2011), which contains two cartridges, a headband and a half mask containing inhalation valves and an exhalation valve, headband attachment points and cartridge attachment points located on the sides ... The obturator of the half mask is made of elastic material. An elastic shutter is fixed in the inner part of the half mask's plastic body. The convex shape of the plastic headband frame provides a snug fit and fixation on the head. The headband frame has upper and lower elastic knitted belts. The cartridge attachment points are equipped with two adapters and are made in the form of saddles, provide a bayonet connection of the cartridges with the half mask body. The slit-like form of the exhalation valve has two attachment points to the plastic body of the half mask. The exhalation valve is closed by a streamlined lid with openings for air passage. The obturation strip is identical to the shape of a person's face. The headband of the respirator is connected to the plastic body of the half mask by upper and lower elastic straps at four points through buckles. The tongue and gusset of the lower straps buckle provides a secure fit and adjustment of the straps To connect to each other, the lower ends of the belts are equipped with buttons to ensure the respirator is carried around the neck.

The disadvantage of the known respirator device is the wearer's difficulty in breathing, the impossibility of being in it for a long time, the need to change the cartridge.

Known filtering half mask for protection against aerosols and dust is presented in two versions (p. RU No. 2550329, IPC A62B 18/00, 2013). In the first version, it is made with a nose clip, fastening petals of the cheek ears, having the same lateral surface of about 8-10 cm ² , located on the protruding extensions on the lateral sides of the flat areas of the rims in the form of a rectangle, having rounded transitions on the main part of the half mask, which has a fastening tape, with one knot and the possibility of converting when putting on in two tapes in order to ensure regulation of the girth of the occipital and crown parts of the user's head, and the contour of the main part of the half mask is fastened along the obturation line with a welding seam in the form of dash lines, and the seam connecting the two parts of the workpiece is placed in chin area; the second version of the half mask contains a main part made with the ability to cover the mouth and nose of the user, fastening protruding petals - the ears of the cheeks with holes, an elastic band with one knot, a nose clip located between the layers of the nonwoven fabric of the main part of the half mask, secured by a U-shaped frame and made of two aluminum threads covered with a plastic sheath, an exhalation device located at the cheek level on the right or left side and consisting of an exhalation valve saddle, a protective screen that serves to divert the exhaled air stream from the user's eyes, and a membrane attached to the exhalation valve saddle, in order to reduce resistance during exhalation.

The disadvantage of the known half mask device is its disposability.

The closest in technical essence to the claimed device is a filtering protective half mask with a carbon filter and a HEPA filter (RU 190961, IPC A62B 18/02, A41D 13/11, A61M 16/06, 2019), consisting of a body and fasteners in the form sewn-on elastic fabric tapes located along the edges of the case. On the side surface of the body there is also a breathing membrane valve designed to release exhaled air, the body of the half mask consists of an outer, inner and intermediate layers, the layers are made of knitted fabric, the intermediate layer is multilayer and is made of a middle carbon filter and two HEPA filters located on both sides of the charcoal filter.

The disadvantage of the known half mask is the poor fit of the nose part due to the lack of stitching, the lack of adjustment of the half mask fit, and the low quality of air filtration.

The technical task of the proposed utility model is to improve the anatomical fit of the half mask to the face and improve the quality of filtration.

The technical result is achieved by the fact that a four-layer half-mask, including a body made of layers of fabric with stitching along the contour and fasteners, according to the utility model, the fasteners are equipped with size adjusters, the body is made of four-layer, the first outer layer is made of synthetic breathable fabric, the second is in the form of an FPP membrane. 15 with nanosilver, the third “SMS” -layer is triple with two spunbond layers and a meltblown layer between them, the fourth inner layer is made of cotton fabric, while the mask has additional stitching in the nose.

The utility model is illustrated by a drawing, which shows a schematic diagram of a four-layer half mask.

The four-layer half mask contains a body consisting of four layers of fabric: a layer of synthetic breathable fabric 1, a layer-membrane FPP-15 with nanosilver 2, “SMS” layer 3 (S - spunbond, M - meltblown, S - spunbond), cotton fabric 4. The stitches are made along the contour of the half mask 5 and in the nose part 6. On the fastening elements 7, size 8 adjusters are additionally fixed to ensure a snug fit of the half mask to the face. Anatomical fit of the upper part of the half mask to the face is achieved by stitches 5 and 6.

The first - the outer layer of the half mask consists of a synthetic breathable material.

The second layer is a protective layer, developed in collaboration with the SB RAS staff, a FPP-15 membrane with Ag NP / OlNa nanosilver, which prevents the penetration of dust, various types of smoke, fog into the respiratory system with a concentration of up to 50 MPC, as well as fungi, bacteria and viruses on 98.7%. It reduces allergic reactions during the flowering period.

The third layer of the mask - “SMS” -layer 3 is characterized by its durability and excellent ventilation characteristics.

The fourth (inner) layer of the mask is a delicate cotton fabric that does not cause allergies and does not irritate the skin of the face.

The service life of the half mask is up to 100 wear changes depending on the operating conditions.

The four-layer half mask works as follows.

A person puts on a half-mask on the face and fixes it on the face with fasteners 7 and size regulators 8. The mask fits snugly to the face due to the presence of stitches 5 and 6. When a person inhales, air passes through a synthetic breathable fabric 1, membrane layer FPP-15 with integrated convective application of nanosilver 2, “SMS” layer 3 and cotton fabric 4.

In April 2020, a four-layer half mask was tested in the laboratory of TANTAL LLC, and in May 2020 its serial production began. https://routemark.ru/magazin/polumaski/4-kh-sloynaya-polumaska-rinidi-silver-nano-black/.

The effectiveness of the half mask is achieved by stitching 5 in the nose, high-quality filtration when contaminated air passes through all protective layers and adjustment for any head size.

The use of a half mask will allow the wearer, regardless of the anatomical features of his head, to adjust the mask for himself and not think about replacing it for more than a month, while ensuring ease of breathing and absence of discomfort during its use.

Claims (1)

Four-layer half mask, including a body with stitching along the contour and fasteners, characterized in that the fasteners are equipped with size adjusters, the body is made of four layers, the first outer layer is made of synthetic breathable fabric, the second is in the form of an FPP-15 membrane with nanosilver, the third is “SMS ”-Layer is made of triple with two layers of spunbond and a layer of meltblown between them, the fourth inner layer is made of cotton fabric, while the mask has additional stitching in the nose.

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