The plastic material is first made into a preform and then blown. Currently commonly used in PET is environmentally friendly plastics.
Preheating The preform is illuminated by a high temperature lamp to soften the body portion of the preform. In order to maintain the shape of the finish, the preform opening does not require heating, so a certain cooling device is required to cool it.
Blow molding: At this stage, the preheated preform is placed in the already prepared mold and inflated to blow the preform into the desired bottle. The blow molding machine on the market is generally divided into Fully automatic and semi-automatic.