Stretch blow moulding (stretch blow moulding)

Emissions generated by the activity within the product supply chain as described in ecoinvent v3.10. This is delivering the service of 'stretch blow moulding'. Stretch blow molding is a special form of blow molding. The process exploits the fact that high degrees of orientation can be introduced in plastics by drawing at temperatures near the glass transition temperature or crystalline melting point. Mechanical properties are considerably improved in this way. In this process the preform is drawn not only in the circumferential direction (as with extrusion blow molding) but also in the machine direction. The longitudinal drawing is brought about mechanically by using a ram. Because of the relatively low temperature at which this process is carried out high deformation forces are required (air pressure up to 2 MPa). In the service of strech blow moulding 1 kg of this process corresponds to 0.978 kg of strech blow moulded plastic.The converted amount of plastics is not included into the dataset. Thus this service should be used along with 1 kg of thermoplastic materials like polyvinyl chloride (PVC) polypropylene (PP) and polyethylene terephthalate (PETP). The cut-off classification is allocatable product. The activity type is ordinary transforming activity. The reference product amount is 1.