MEDICAL PROTECTIVE MASK OF REGULATED SIZE Russian patent published in 2018 - IPC A41D13/11 

FIELD: medicine.

SUBSTANCE: medical protective mask comprises a sheet of a rectangular-shaped respiratory unit with transverse folds made of non-woven filter material, contains a device for attaching the mask to the head, made in the form of a breech loop or a string, contains a nasal device, made in the form of a flexible inelastic elongated strip-insert, sewn into the upper edge of the respiratory unit, it contains additional flexible oblong stripes - inserts sewn into the canvas of the respiratory unit parallel to the nose cover. Patented technical solution is a design that has the following essential distinctive features: sheet of the respiratory unit is made three-layered, the outer layer intended for contact with the surrounding space, and also the inner layer intended for contact with the face, are made of a material of the spunbond type based on polypropylene, and the middle layer is made of a meltblown material based on polypropylene, the first from the upper edge of the respiratory unit of the fold is made with a fold of the sheet up, and second and third folds, respectively, with folds of the sheet down, the middle additional flexible oblong strip-insert is sewed between the first and second folds and is made of an elastic material, lower additional flexible oblong strip-insert is sewn into the lower edge of the respiratory unit and is made of an inelastic material.

EFFECT: invention relates to devices intended to protect respiratory organs from various harmful contaminants contained in the air, such as dust, bacteria, viruses, aerosols and the like.

13 cl, 3 dwg