OIL-PROTECTION OVERALL WITH MODIFIED HEAT-INSULANT Russian patent published in 2017 - IPC A41D13/00 

FIELD: personal demand items.

SUBSTANCE: product belongs to the field of protective clothing from industrial and climatic factors with a function of protection against the aggressive effects of crude oil and oil products with an increased level of preservation of heat-shielding properties for overall application in conditions of low temperatures. Oil-protection overall with a modified heat-insulant, including sleeves, closed collar, hood, characterized by being made of two kinds of external materials, joint on the frontal surfaces, taking into account the experimentally established topography of oil contamination zones distribution: in the areas with the maximum likelihood of direct contact with oil, including the overall front, trousers and sleeves bottom, the seating surface of the trousers back, the upper parts of sleeves, and the hood - film membrane material with high levels of protection against crude oil, bad weather, static electricity accumulation in combination with flame-retardant properties is used, which is located above two layers of material with fibrous composition of 100% cotton and a surface density of 145 g/m², between which a synthetic insulation, having a bonded structure in the form of a bulk adhesive web of high porosity made of elementary helical siliconeized fibers is located; in the areas with the least probability of direct contact with crude oil products, including the lower parts of sleeves, the middle of the back, the overall side and the central part of the rear halves of the overall - fabric mixed for workwear with oil repellent properties is used, under which two layers of material with fibrous composition of 35% cotton, 65% polyester and a surface density of 120 g/m² with moisture-proof impregnation is located, between which there is an inner layer of a modified insulation based on a synthetic insulation, having a bonded structure in the form of a bulk adhesive web of high porosity made of elementary helical siliconeized fibers and crumbs of para-aramid fiber with a filling rate of 300±3 g/m² is located, which practically does not change the heat transfer coefficient - less than 1%, and a reflective braid is made at the bottom of sleeves and trousers of the overall. The surfaces of the maximum risk of contact with oil on the sections of the upper seams of the sleeves, the side seams of the overall and the seams of sleeves attachment in the armholes are excluded from the design and replaced with seamless parts.

EFFECT: provision of combined oil-protective properties of overall both on the outer surface and in the inner layers, while ensuring an increased level of human thermal protection stability in oil-protection overall under cold conditions, simultaneously solving the problem of efficient use of crumbs of para-aramid fiber to expand methods and technologies for recycling of valuable aramid-containing products waste.

4 dwg