METHOD OF PRODUCING MULTILAYER FIBRE MATERIALS AND DEVICE THEREFOR Russian patent published in 2016 - IPC D01G25/00 

FIELD: technological processes.

SUBSTANCE: method of producing multilayer fibre materials comprises transfer thereof using external air streams and creation of internal air streams directed to zone of forming fibre layers with separation thereof into components, wherein external air streams are directed horizontally by changing path of fibre material, wherein path of movement of upper component of fibre material is increased in relation to path of lower component of fibre material; path of obtained layers is made different, after which layers of fibre material are connected with a layer of cloth on both sides; and device for producing multilayer fibre materials comprises a hopper, feeding rollers, feeding cylinders, a saw-toothed drum with mote knife and distribution chamber with a unit for forming fibre layers made of two pairs of mesh drums and conveyors, wherein behind saw-toothed drum, installed on outlet of hopper, there are horizontally installed additional saw-toothed drums, under outlet saw-toothed drum there is a transporting corridor of height h=8…12 mm; distribution chamber is presented in form of a polygon in cross section with controlling dust removal zone, arranged in upper angle of polygon, wherein side of upper angle of polygon are located at angles β=20…30° and γ=30…45° to horizontal line; unit for forming fibre layers is made in form of paired mesh drums, divided by side wall of polygon, wherein side wall is located at an angle λ= 55…60° to horizontal, and mesh drums are spaced apart so that ratio of distances from zone of removal of outlet saw-toothed drum to upper pair of mesh drums to distance from zone of removal of outlet saw-toothed drum to lower pair of mesh drums is 1.1-1.4; conveyor upper pair of mesh drums is bent at an obtuse angle; between conveyors installed at outlet of both pairs of mesh drums there is a bracket with freely rotating roll of cloth, and behind conveyors and bracket with roll of cloth there is a forming conveyor; all saw-toothed drums, apart from outlet, comprise control mote knives with pneumatic system for removal, and hopper is made in form of confuser.

EFFECT: group of inventions broadens process and technological capabilities of device and method by obtaining new textile materials with simultaneous improve of quality factors thereof.

3 cl, 2 dwg