SU364704A1 - DEVICE FOR PREPARING NON-FABRIC MATERIAL FROM POLYMER MELT - Google Patents

Description

one

A device is known for producing nonwoven material from a polymer melt, comprising melting and spinning blocks, a blowing device having a compressed air distribution unit, a nozzle for ejecting a jet of melt and a diffuser, and a receiving device.

In order to regulate the stacking area of the fiber on the receiving device in the proposed device, the diffuser has fractional slots for air suction, and the nozzle is made expanding towards the outlet and is equipped with means for adjusting its position in the horizontal and vertical direction relative to the diffuser.

The drawing shows the proposed device.

The device comprises a melting and spinning unit /, a blowing device 2 and a receiving device 3, on which the nonwoven material 4 is formed from fibers 5.

The blower device consists of the upper 6 and lower 7 bodies, at the junction of which a labyrinth channel is formed to evenly distribute and supply the compressed gas to the exit gap. In the upper case 6 there is an insert 8, fitted with

a nozzle 9 with a expansion outlet; and a nozzle 10 for supplying compressed gas. The insert 8 is equipped with micrometric screws //, with which they adjust the position of the nozzle 9 in the horizontal plane and, thus, the width and shape of the output gap 12. On the lower housing 7 is fixed D1 fuser 13 with through vertical slots 14. In the insert 8 and the housing 6, the micrometer screws 15 are installed, by means of which the insert 8 with the nozzle 9 is raised and lowered in a vertical plane, and thus the parameters of the gap 12 are adjusted. Thus, the insert 8, the screws // and 15 are means for adjusting the position of the nozzle 9.

The operation of the device is as follows.

The melt jets 16 exit the melting device I, are ejected into the nozzle 9 due to the vacuum created by the stream of compressed gas leaving the high velocity 12 from the gap 12, and push into the diffuser 13. In the nozzle 9 the jet is preliminarily stretched. Growing the melt stream in the diffuser 13. Compressed air leaving the gap 12 is directed along the walls of the diffuser, accelerates the inner layers of the gas together with the fibers to the desired speed.