It refers to a production machine used to manufacture bottles of different shapes and sizes with simple working principle: relying on the applied air pressure, the blow molding machine blows air into the heated preform and shapes it with a specific mold wrapped outside.
In detail, the overall production process of the bottle blowing machine is as follows:
The initial phase involves warming up by heating the PET bottle preform to achieve the required molding temperature while ensuring even heating of both the inner and outer walls of the body. As the bottle mouth has a distinct shape, it does not require heating, and instead, it needs to be cooled during the body's embryo heating process.
The second step is bottle blowing. The evenly heated bottle preform is fed into the blow molding mold through a chain, and sterile high-pressure air is blown into the bottle preform through the middle of the mandrel to stretch it circumferentially, so that it is inflated until it is close to the mold wall, and then cooled.
The third step is to demould. After the bottle blowing is completed, the machine begins to exhaust and demould.
The fourth step is to transmit. The formed PET bottles are sent to the bottle unloading station through the conveyor belt, and are pulled up and blown out by the bottle unloading cylinder. If it is in the blow-paste-fill-cap machine produced by TECH-LONG, it will be sent to the next machine to continue packaging.