The solution to the shapeless bottom of the bottle blown out by the blow molding machine

The solution to the shapeless bottom of the bottle blown out by the blow molding machine

• By admin
• 2023/5/29 7:58:19
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The bottle blowing machine is mainly used for blowing the preform. In the process of blowing the bottle, it is inevitable that the blown bottle is unqualified and the bottle bottom is not formed. There are many reasons for the bottle bottom to be formed. bangemachine.com  blow molding machine manufacturer Share the reasons and solutions for the bottom of the bottle to be out of shape.

    1. Reasons for bottle bottom heating

At present, most automatic PET blow molding machines use infrared lamp heating. The heating box is divided into multiple independent areas, and the temperature is controlled separately. If the heating temperature of the bottle bottom is not enough or the heating is too low, the bottom of the blowing bottle will be deformed.

Solution: adjust to the appropriate bottle bottom heating temperature, reduce the high-pressure blowing time and increase the cooling time. For detailed temperature adjustment, please consult the after-sales service of the PET blow molding machine manufacturer.

     2. Reason for stretching

The stretch rod is off center or the stretch rod is too short. Deformation of the bottom of the bottle or too little force can cause the bottom of the bottle to be out of shape.

Solution: Adjust the position and length of the stretch rod

     3. The reason for blowing air

Insufficient blowing pressure or too short blowing time will cause the bottom of the bottle to be stressed for too short a time and the bottom of the bottle will not be formed.

Solution: adjust the blowing pressure and blowing time

    4. Reasons for bottle bottom mold

The gap between the bottle bottom mold and the preform clamping mold, air leakage or incorrect height adjustment of the bottle bottom mold can cause the bottom of the bottle to be out of shape.