What are the key factors for the instability of flexible PVC lay flat hose barrel screw quality？

The flexible PVC lay flat hose machine barrel screw is widely used due to its excellent performance. However, due to a variety of factors, the quality of manufactured products will be unqualified, such as excessive gaps, heating temperature control, and unstable operating speeds.

1, flexible PVC lay flat hose machine barrel screw gap is too large, the molten flux flow is not stable, the product surface is prone to horizontal wrinkles.

2. The gap is too large and the pressure of the extruded melt is not stable, which results in large variations in the dimensional error of the geometry of the product section.

3, the gap is too large, the molten material in the barrel forward when the increase in the phenomenon of reflux, making the molten material in the barrel residence time is too long and yellow, which will make the surface of the product discoloration or a focal spot.

4, flexible PVC lay flat hose machine barrel screw gap is too large, so that the output of extrusion products is unstable or declining.

1st, the heating temperature control is not stable, causes the raw material in the barrel the plasticity quality to be uneven, causes the product surface to be rough, often appears the water mark.

2. The cross-sectional dimensions of the product are not stable, and the error in geometrical dimension size is relatively large.

3, the surface of the product often appears hard blocks.

4, the product of unstable quality, poor strength, easy to use when embrittled.

Flexible PVC lay flat hose machine The effect of unstable working speed of the barrel screw on the quality of the flexible PVC lay flat hose:

1, the product longitudinal geometric shape size error is relatively large.

2, products will often appear lateral wrinkles.

3, the surface of the product is rough, brittle or partial hard block appears.

The following factors affect the working speed of the flexible PVC lay flat hose machine barrel screw:

1. The transmission V-shaped belt wears badly and slippery.

2. The center-to-center distance of the V-belt drive pulley is too small, so that the tape drive cant cannot work properly with the pulley trapezoidal inclined surface.

3. The temperature of the heating material in the barrel is too low, and the plasticization of raw materials is not uniform, which causes the working load torque of the rotation of the Zhoushan screw to increase, making the screw speed unstable.

4, screw thrust shaft damage.