Some PVC pipe fittings of the section will be the phenomenon of bubbles, which is why? And how to solve it? Here is a small series for you to introduce:
First is probably because the moisture in the materials is too high, this time on the need for the material drying or change the nozzle; the second is probably because mixture low temperature, no discharge of water, this time on the need to raise the temperature of the mixed material; the third may is because exhaust hole vacuum low or pipe is blocked, this time the need to check the vacuum pump and pipeline; the fourth may is because the fuselage or die temperature is too high, the need to reduce the temperature; the fourth may because of the poor thermal stability of the mixed ingredients, this time on the need to check modified formula.
Above is about the PVC pipe fittings section will have the causes of bubbles and the solution, hope can help to solve your problem.
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