DUCK FABRIC (VERSIONS) Russian patent published in 1998 - IPC

FIELD: duck fabric for manufacture of special overalls for firemen, welders etc. SUBSTANCE: duck fabric contains heat-resistant polyparaphenylene terephthalamide core threads made in the form of yarn with linear density of 32 x 2 tex combined with complex thread at pitch of 8:1-2 or with combined thread at pitch of 30:2. According to first version, filling threads are formed as yarn made from polyparaphenylene terephthalamide filaments, and, according to second version, filling threads are formed as complex threads with linear density of 29.4 or 58.8 tex or combined two-component thread. Each component has single yarn and complex thread. EFFECT: increased efficiency, wider operational capabilities and improved quality of fabric. 4 cl, 3 dwg, 2 tbl