Blow molding stretched

Originally, the commercial PC resins were linear polymers with high shear viscosity and low melt strength, thus difficult to process in operation involving extensional flows, viz. blow molding stretching, foaming. Several years ago branched PC (bPC) became available. The resin is usually blended with linear PC at the ratio that on the... 

There are four different blow molding processes extmsion blow molding, injection blow molding, stretch blow molding and the less frequent dip blow molding. 

Coor s beer bottle During the mid-1950s, Coor sBeer Company in Colorado almost used commercially stretched, injection blow-molded bottles. It would have used the blow-molding injection with rotation process. Unfortunately, it was using acrylonitrile-styrene plastic (AN-styrene from Barex plastic from Sohia of BP Chemical International) (DVR project), which was banned by the FDA. Many years later it was approved for use. See acrylonitrile-styrene plastic blow molding, injec-tion-with-rotation blow molding, stretched Coca-Cola bottle. 

Extrusion blow molding Injection blow molding Stretch blow molding... 

Extrusion Blow Molding Injection Blow Molding Stretch Biow Moiding DIP Blow Molding Multibloc Blow Molding... 

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