The equipment suddenly shuts down and cannot start normally.

The reasons include power failure, overload protection trigger, and control system failure. Solution: Check the power line and plug, check the cause of equipment overload (such as raw material blockage), restart the control system, and contact professional personnel for maintenance if the fault is not resolved.

The bottle mouth is deformed and the seal is not tight.

It is mainly caused by wear of the bottle mouth mold, insufficient cooling of the bottle mouth during blow molding, and uneven clamping force. Solution: Repair or replace the bottle mouth mold, extend the cooling time of the bottle mouth, and adjust the clamping force to a uniform state.

The output of the blow molding machine fails to meet the preset standard.

The core reasons are too slow extrusion speed, too long blow molding cycle, and frequent shutdowns caused by equipment failures. Solution: Optimize extrusion and blow molding parameters, shorten the production cycle, check equipment failures and repair them in time to ensure continuous operation of the equipment.

The bottle has bubbles and pinholes.

It is caused by moisture in the raw materials, air mixed into the parison, and impure blow molding air pressure. Solution: Dry the raw materials to remove moisture, check the sealing of the extruder feed port, and filter the blow molding air to remove impurities and moisture.

The blow molding machine makes excessive noise during operation.

The main reasons are wear of equipment parts (such as gears and bearings), insufficient lubrication, and air leakage in the air circuit system. Solution: Check and replace worn parts, regularly add qualified lubricants, check the air circuit and repair air leakage points.

The parison breaks and is unstable during extrusion.

It is mostly caused by uneven melting of raw materials, too fast extrusion speed, and excessive moisture content of raw materials. Solution: Adjust the extruder temperature to ensure full melting of raw materials, reduce the extrusion speed, and dry the raw materials.

The bottle cannot be demolded normally after blow molding and adheres to the mold.

The reasons include too high mold temperature, insufficient or invalid release agent, and burrs on the inner wall of the mold. Solution: Reduce the mold temperature, supplement or replace qualified release agent, and polish the inner wall of the mold to remove burrs.

The bottle body has uneven thickness, and local thin parts are easy to break.

It is mainly caused by uneven parison extrusion, unreasonable stretch ratio during blow molding, and mold positioning deviation. Solution: Adjust the extruder parameters, optimize the parison thickness, calibrate the mold positioning, and adjust the stretch ratio to a reasonable range.

The bottle bottom is sunken and deformed.

The core reasons are insufficient cooling of the bottle bottom, insufficient air pressure at the bottom during blow molding, or unreasonable design of the mold bottom. Solution: Extend the bottom cooling time, adjust the blow molding air pressure parameters, check and optimize the mold bottom structure.

The bottle body has scratches and pitting, affecting the appearance.

The main reasons are impurities mixed in the raw materials, stains or damage on the inner wall of the mold, and unstable blow molding pressure. Solution: Screen raw materials to remove impurities, regularly clean the mold and polish the inner wall, check the air circuit system, and stabilize the blow molding pressure.