PT ZONE: Blow Molding

‘Wearable’ Machine Sensors Extended to Power Factor & Retrofits
As is often the case with a new technology, customers are dictating how predictive-maintenance sensors will be applied and where they might be headed next. More (+)
Contraction Continues
Business index for plastics processors dips for fourth straight month. More (+)


Solving the Mystery of Melt Temperature

Two new types of sensors are said to be the first practical means to measure "true" melt temperature inside the machine or mold.

‘China Is No Longer Cheap’

When I spoke with Scott Huff about his China-based company’s plans to open a new production facility in the U.S., he was actually getting ready to board a flight to Shenzhen.

Contraction Accelerates for Third Month

Index has been trending down since last March.

What Comes Around Is Going Around…Very Quickly

The game is changing. Reshoring is occurring at a rate faster than most expected.

Ultra-Light PET Bottle Expands Range for Hot-Fill

Hot-fill PET bottles now approach aseptic bottle weights.

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Blow Molding


In blow molding, material is melted then formed to create a hollow part. There are various types of blow molding: extrusion blow molding; injection blow molding; and stretch blow molding. Blow molded products can be broadly classified into packaging (such as soda bottles) or industrial (like fuel tanks).

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» Purging Compound

Sooner or later you will need to purge your machine. Which material should you use to purge your screw and barrel?

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