The stretch-blow process is used to manufacture plastic containers which generally are lighter in weight and have greater clarity and improved physical Properties，compared to containers manufactured by other blow-molding Processes. In stretch-blow molding, the container material is biaxially ented by…
Injection-Blow Process The injection-blow process combines the function of blowing with the precision of injection molding; it requires a parison-forming mold with integral neck ring, multiple core rods (blow pins) and a blow mold. A core rod is moved into…
Extrusion Process Variations Many of the extrusion process machines are capable of manufacturing a great variety 0f blown products through the use of optional equipment and cleverly designed molds, as shown in the following discussion. Neck Calibration. After the parison…
PLASTIC BLOW MOLDING PROCESSES Many commercially available processes and machines are used for plastic blow molding; each one has its advantages and limitations, as indicated in the descriptions which follow. The mold design for any given blown product will be…
The primary function of a mold is to shape the finished product. In order to do this it must have some means of introducing the plastics material to be formed; it must have some means of forming the inside, outside,…
