Description

In the stretch blow molding (SBM) process, the plastic is first molded into a "preform" using the injection molding process. These preforms are produced with the necks of the bottles, including threads (the "finish") on one end. These preforms are packaged, and fed later (after cooling) into a reheat stretch blow molding machine. In the SBM process, the preforms are heated (using infrared heaters) above their glass transition temperature, then blown using high pressure air into using metal blow molds. The preform is always stretched with a core rod as part of the process. The stretching of some polymers, such as PET (polyethylene terephthalate) results in strain hardening of the resin, allowing the bottles to resist deforming under the pressures formed by carbonated beverages, which typically approach *0 psi.The main applications are bottles, jars and other containers.

Advantages of blow molding include: low tool and die cost; fast production rates; ability to mold complex part; produces recyclable parts

The MIPET series of linear stretch blow-molders ensures high performances in the stretch blow-molding of PET, PEN, PLA and PP bottles. Thanks to high-tech components, minimized maintenance and operational costs and excellent quality/price ratio, the MIPET series is the ideal solution for the production of plastic containers of different capacities, featuring various shapes, from the most simple to the most sophisticated ones.