Monday, March 2, 2015

What Is The Blow Molding Process

Blow moulding is used to fabricate plastic bottles.

Blow molding is a custom for creation a discrepancy of hollow plastic products. Molten plastic is extruded, in a tube shape, from a die, then a mould closes on all sides of it. The plastic is then inflated.


The machinery can vary significantly, though the major difference tends to be the point of plastic inflation.


The various processes are used to create a range of products, including bleach and milk bottles. Stretch blow molding is used in the production of PET (Polyethylene terephthalate) bottles, which are widely employed for carbonated beverages.

Blow moulding aboriginal appeared tardy in the 1800s, nevertheless latest polyethylene bottle Industry did not set off until the early 1940s.


The blow moulding action can proceeds four forms: reheat and blow moulding, injection blow moulding, stretch blow moulding and extrusion blow molding.


The plastics used in the various blow molding processes can include HDPE (high density polyethylene), LDPE (low density polyethylene), PP (polypropylene), and PVC (polyvinyl chloride).


As of 2006, an estimated 30 billion to 40 billion bottles are produced using blow molding processes every year in the United States alone.