STRETCH BLOW MOLDING

Stretch Blow Molding

Stretch Blow Molding process can be done in both a single stage and two stage process. The two stage process utilizes preforms in the first stage. This two stage technique is used mostly for the production of wide mouth containers. One of the main advantages of stretch blow molding is that it stretches the container in both the axel direction, and the hoop direction. This is called biaxial stretching. This increases the barrier properties, tolerable drop impact, clarity, tensile strength and top load in a container. These increases in strength allow producers to reduce the overall weight of a container by about 10-15% compared to other production methods. This saves money.