With stretch blow molding, plastic granulate is molten and molded into a preform with the pre-fabricated hollow body opening. The preform is then passed on to a second mold, where it is stretched and blown into the blow molds. For this, the residual heat of the injection molding process is used.

The processed materials are polyethylene (PET), polypropylene (PP) and polycarbonate (PC). Material properties are improved by biaxial stretching. This technology is used for the production of 5-gallon water bottles, spice-boxes, mustard tubes and milk bottles.

For the production of baby bottles, drinking bottles and 5-gallon water bottles Greiner Packaging uses the innovative raw material TritanTM copolyester. This material does not contain bisphenol A (BPA). It boasts a number of excellent properties and offers a high degree of design flexibility during processing.