MULTILAYER SORPTION-FILTERING PROTECTIVE MATERIAL AND PROTECTIVE VEIL MADE FROM SUCH MATERIAL Russian patent published in 2000 - IPC

FIELD: manufacture of sorption-filtering materials for protecting respiratory organs from gases produced during fire. SUBSTANCE: protective material is composed of seven layers, with inner layer being made from perchlorovinyl fibers laid between two layers of gauze fabric. Rectangular insert made from seven-layer sorption-filtering material is secured in slot of protective veil manufactured from transparent film. Rubber collar on lower part of veil is adapted for sealing veil put on user's neck. Return valve in one of insert corner parts facilitates user's breathing. EFFECT: simplified structure, increased efficiency and improved quality of veil manufactured from such material. 7 cl, 4 dwg