Reduce the temperature at the bottom of the heating zone or use a damp cloth to reduce the temperature at the bottom of the embryo tubeĢ. Poor design of the bottom curve of the bottleġ. Insufficient flow rate of the blow valveħ. The design of the stretching rod head does not conform to the shape of the bottom of the embryo tubeġ. The stretching rod does not reach the bottomĤ. The exhaust holes at the bottom of the mold are insufficient or unevenģ. The temperature of the bottom of the bottle is too highĢ. Increase the delay of mold opening timeġ. Increase the delayed blowing time or increase the draw bar falling speedĢ. Improve the bottom design of the embryo tubeĢ. The bottom of the embryo tube is too thinĤ. The temperature is not enough, not penetratedĤ. Add a gas storage tank to the action gas source, or shorten the gas supply pipeline.ġ. Increase the heating temperature of the embryo tube.Ĥ. Decrease the volume of air on the side of the roll bottle.ģ. Shorten the delayed blowing time or reduce the descending speed of the stretch rod.Ģ. The air pressure for movement is unstable, which affects the descending speed of the stretching rod.ġ. The temperature at the accumulation place is too low.Ĥ. The maintenance position of the mold mouth.īottle bottom or bottleneck rolled up and accumulated materialģ. Repair the mold or check the mold assembly position, such as whether the guide post is loose or the mold is not compressed.Ĥ. Position of the post-movement clamping switch.ģ. Increase the clamping pressure and adjust the angle of the clamping stay (<5 degrees).Ģ. The size of the mouth of the embryo tube does not match the moldġ. The mold clamping pressure is not enoughĤ. Increase the thickness of the embryonic tube bottomġ. The bottom of the embryo tube is too thinģ. The temperature at the bottom is too highģ. Adjust the position of the exhaust holeĢ. The inflation ratio of the upper part of the bottle is too lowĢ. The position of the die vent is too far from the upper partĤ. The upper part of the bottle is too thickĢ. Increase the stretching ratio or inflation ratio Adjust the position and aperture of the blow holeģ. Uneven wall thickness or uneven injection densityġ. The embryo tube does not rotate in the heating furnaceĥ. The stretch ratio is too low or the inflation ratio is too smallĤ. The air blowing holes are asymmetrical and have different aperturesģ. The position of the stretch rod is not in the center of the embryo tubeĢ. improve the heating conditions, or check the embryo tube for rotationġ. The thickness of the embryo tube wall is uneven or the injection density is unevenģ. The stretching rod is offset from the centerline of the bottle shaftĤ. The stretching rod is not lowered to the bottomģ. Reduce the thickness of the embryo tube, or try to raise the outer cover of the heating device to increase the temperature of the surface layer of the embryo tubeĢ. Improve the design of the embryo tube sizeĦ. Improve the quality of the embryo tube, select materials and increase the dryness of the raw materialĥ. Improve the heating conditions, or check whether there is any problem with the rotation of the embryo tube.Ĥ. Adjust the position of the magnetic pole switchģ. Delay the blowing time or increase the descending speed of the stretch rodĢ. The stretching rod is offset from the center line of the bottle axisĤ. The stretching rod does not go down to the endģ.
The position of the bottom of the PET bottle is offsetĢ. Reduce the thickness of the embryonic tube, or try to raise the outer cover of the heating device to increase the temperature of the surface of the embryonic tube. Warm up or slow down the revolution speedģ. The thickness of the embryo tube is too thick, and the penetration of heating is insufficientġ. The pearl gloss appears in the PET bottleģ. Improve the quality of embryo tube, choose materials and improve the dryness of raw materialsĥ. The proportion of inflation is too smallĤ. The injection embryo tube itself is opaqueĦ.
The production engineer should know much about PET preform treatment for the storage and tranportation, PET bottle blowing machine`s electronic circuit information,electrical diagram,hydraulic diagram, infrared heating system, compressed air drying system and other automatic controlling systems.īelow we had listed the common pet bottle manufacturing defects and solutions of PET bottles blow molding for your checking.
#Asb pet preform mould suppliers professional#
PET Bottle Blowing Troubleshooting is a skilled work needs lots of professional acknowledge on PET treatment process, bottle stretch blow molding machine and other auxiliary equipment.
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