Usually in the blow molding process of blow molding products are prone to several problems. Blow the bottle, the bottom of the aggregate, the bottom is not right, the bottle is thin, the bottle is white, etc. How to tell whether it is the problem of blowing or the problem of bottle embryo? Kunshan blow molding processing factory suggests that different conditions on the blown bottle can be analyzed
First, the reason why the bottle blew:
1, the embryo tube heating is not enough, not baked thoroughly;
2, the drawing rod is not pulled in place (to the end);
3, the tensile rod speed is too slow;
4, turn on the temperature protection, but the upper and lower temperatures are set too high.
Solutions to blow molding product processing failures:
1. Increase the voltage when the output is unchanged. If the voltage is unchanged, the output is reduced, that is, the time of secondary blowing is extended.
2. Exhaust after closing the mold, push the drawing rod to the bottom of the mold and contact the bottom of the mold by hand, and tighten the limit nut. (Only limited to mechanical cylinder adjustment).
3. Adjust the throttle valve on the drawing cylinder to a larger size.
4, lower the lower limit temperature, the general PET bottle embryo set to 85~95 degrees, the upper limit can be set to 125~130 degrees.
