Abstract
Publisher Summary This chapter focuses on the machines used for injection stretch blow molding (ISBM). ISBM involves injection of preforms as well as blowing of bottles in the same machine. ISBM is inherently more complex method than the two-stage process of molding, as in ISBM preforms are not cooled down completely after injection; instead, residual heat inside the preform allows blowing without reheating. Machines of this type are commonly used in the cosmetics, personal care, and household markets. Two different types of machines can be summarized under ISBM. In one type of ISBM machine, indexing is done with three or four stations where the preform stays in the neck insert, going through injection (conditioning with four-station machines), blow, and ejection. In the other type of machines, various designs where the preform is completely removed from the injection tool, put on mandrels, heat-conditioned, and then blown. This process may be called integrated two-stage stretch blow molding (ITSBM).
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