APPARATUS FOR ULTRASONIC IMPREGNATION OF MULTILAYER FIBROUS MATERIALS Russian patent published in 2022 - IPC B05C3/12 

FIELD: applying fluent materials.

SUBSTANCE: invention relates to apparatus for ultrasonic impregnation of multilayer fibrous materials with various polymer binders and can be used in the production of pre-pregs made of fibrous composite materials (fibre glass plastics, organic plastics, carbon fibre plastics, including multilayer ones) for machine-building, aviation, shipbuilding, petroleum and gas, and construction industries and for household purposes. Apparatus for ultrasonic impregnation of multilayer fibrous materials comprises a bath for the binder, drive rollers, an oscillation concentrator and a working tool installed in a sealed body in the bath and made in the form of plates with an emitting surface. The working tool with the oscillation concentrator and the emitting flat surface is made in the form of an inline set of sealed bodies located in the bath with the binder in parallel inline planes on both sides and parallel to the positioning plane of the moving web of the processed multilayer fibrous material, constituting alternation of flat ultrasonic oscillation-emitting plates as components of a sealed body and with gaps between the sealed bodies. Each emitting surface of the sealed body of the working tool in the upper row is installed opposite to the empty gap of the lower row of the emitting surface of the sealed body of the working tool, fully covering the space between the emitting plates of each sealed body of the working tool in the opposite row.

EFFECT: increase in the efficiency of the process of impregnation of multilayer fibrous materials and the uniformity of distribution of the binder in the structure of the fibrous filler due to the alternating impact of ultrasonic oscillations and the reduction in the amplitude thereof.

1 cl, 2 dwg