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,…
DESIGN OF EXTRUSION BLOW MOLDS The actual design of a blow mold will be guided by the standard data available to adapt the mold to the machine and the applicable process. The mold cavities will be replicas of the exterior…
Additional Requirement for Molds (1) Pressure air. Some molds require air pressure for their operation. In general, the designer should be aware that compressed air, especially in large volumes, can be very expensive, especially if it is left to blow for any…
