MULTILAYER PACKET Russian patent published in 2003 - IPC

FIELD: production of special-purpose clothing. SUBSTANCE: multilayer packet has inner and outer layers and intermediate layer positioned between said layers and comprised of corrugated members laid in parallel rows in spaced relation with one another, with corrugations of intermediate layer extending perpendicular to inner and outer layers. Multilayer packet is provided with binding members having width equal to width of corrugation bases and connected to inner and outer layers and to corrugated members by stitching, gluing or welding method. Binding members are positioned in parallel with inner and outer layers at outer sides of corrugation bases. Corrugations are made Z-shaped or [-shaped. Corrugation bases are oriented toward one side and/or in facing relation with one another. Each row of corrugated members is composed of strips joined to one another and/or spaced from one another along their width, with linear or staggered arrangement of spacings being provided. Binding member is made of material having rigidity exceeding that of intermediate layer, and has length equal to width of strip. EFFECT: simplified structure, increased impact-resistance, improved filtering properties and wider range of use. 2 cl, 8 dwg, 1 tbl