DEVICE FOR FIBROUS MATERIALS PRODUCTION FROM MOLTEN THERMOPLASTICS Russian patent published in 2017 - IPC D01D5/08 

FIELD: chemistry.

SUBSTANCE: device for fibrous materials production from molten thermoplastics comprises a housing consisting of upper and lower parts between which a pressurized chamber is formed with an opening for energy carrier supply, and an annular working nozzle communicating with the pressure cavity, wherein an axially symmetric funnel is formed on the top of the housing for molten thermoplastics reception, its outlet portion external surface forms one of the working nozzle walls. At that, the hosuing parts are mounted to provide linear displacement of the upper part relative to the lower along the axis by between 0.0014D and 0.4D, where D is the smallest diameter of funnel, and their fixation in this position. The device comprises means to change and fix geometrical dimensions of the working nozzle, which is a threaded connection of the housing parts, the upper part has four locking holes located circumferentially at angular coordinates 0°, 15°, 187.5° and 202.5°, the lower part has 12 threaded holes with an increment of 30° around the circumference of the same diameter, used for locking screw installation in one of the possible matches of the upper and lower housing holes, that allows to discretely adjust the annular working nozzle clearance in one of 48 positions.

EFFECT: simplified design of the device for fibrous materials production from molten thermoplastics, higher fibers quality, in particular, reduced amount of non-fibrous inclusions, extended raw material range for fibrous materials production.

3 cl, 2 dwg