METHOD FOR PRODUCING FILTER-SORBENT MATERIAL FOR PERSONAL PROTECTION EQUIPMENT FOR RESPIRATORY SYSTEM Russian patent published in 2008 - IPC D21F11/00 

FIELD: textile, paper.

SUBSTANCE: method relates to the pulp-and-paper industry, particularly to production of the filter-sorbent material which can be applied in the personal protection equipment for the respiratory system. The method is realised as follows: into the sulfate pulp with the beating rate of 20±2° Schopper-Riegler value, the polypropylene fiber is entered at 5-10% of the sulfate pulp mass. The fiber mixture is beat till the rate of 28±2° Schopper-Riegler value. The prepared mixture is stirred with the merserised sulfate pulp and seized with the binding agent and following supply of aluminum sulfate. The carbon-cellulose composition is cast, lightly molded and dried. After that, the composition is thermoplasticised at 180-200° and minimal pressure 0.1-0.2 kgs/cm². The technical output of the invention is improved service properties of the filter-sorbent material due to the increased destroying effort and decreased rigidity at prevention of the high adsorption properties and low resistance to the human respiration.

EFFECT: improved service properties of the filter-sorbent material for the personal protection equipment for the respiratory system.

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