Shuttle-type blowing machine

FIGURE 1.137 Schematic of a shuttle-type blowing machine (manufacturer Krupp Kautex)... 

Shuttle-type blow molding machines translate their molds linearly between the pinch-off point and the blowing station. Alternatively, it is possible to mount a series of blow molds on the circumference of a wheel (either vertical or... 

The third and most successful approach was accomplished on a wheel-type blow molding machine. Unlike the shuttle machine where only gravity acts on a downward extruded parison, a wheel machine draws or pulls the parison from the die. This allows extension in the extrusion direction and the opportunity to thin down the barrier layer and reorient the mica platelets. 

Extrusion blow moulding (the simplest), in which the parison is an extruded tube that is blown with air. Various types of machinery are marketed shuttle, reciprocating and wheel machines. 

This type of extrusion blow molding machine uses something called a shuttle machine to get all the parts in place. Alternatively, a rotary machine, illustrated in Figure 14-61, can be used. Rotary extrusion blow molders are used in high volume applications, as in the production of laundry detergent bottles. 

Shuttle machines and single station machines, other than the wheel type will normally use the core pin for entrance of the blow air. The mathematical formulas that can be used are ... 

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