You must be very curious. How do we usually make cosmetics bottles?
The plastic material is first made into a bottle embryo and then blown. At present, environmental protection plastics are commonly used in pet.
1. Preheat irradiates the preform with a high temperature lamp to soften and soften the main part of the preform. In order to maintain the shape of the bottle mouth, the preform opening does not need to be heated, so a certain cooling device is needed to cool it.
2. Blow molding
In this stage, the preform that has been preheated is put into the prepared mold, and the preform is inflated to blow into the required bottle.
It turns out that the plastic bottles of cosmetics we usually use are produced in this way, my little friend knows.