PT ZONE: Blow Molding

Commodity Resin Prices Heading Down
Falling global feedstock costs and demand destruction concerns are forcing prices downward. More (+)
Growth Continues, Slowly
Processing market grows for the 11th month out of 12. More (+)


MOST RECENT CONTENT: Blow Molding

Why Processors Are Rediscovering Liquid Colorants

In extrusion, injection, and blow molding, liquid color is enjoying something of a renaissance. Cost is one reason, but advances in pigments, carriers, delivery systems, and innovative service programs have played a role too.

How to Address Uneven Wall Thickness in Stretch-Blow Molding

Many conditions must be met to get the best wall distribution in a PET bottle. Skilled operators are, as always, indispensable.

Taiwan’s ‘Time is Coming’ For All-Electric Machines

Taiwan’s plastics machinery market is a player on the global stage, except for one segment—all-electric machines. The recent Taipei Plas show suggests that’s about to change.

Automa Acquired Out of Liquidation By Fellow Italian Firm

The Italian manufacturer of blow molding machinery has been acquired by a fellow Italian company, which services, rebuilds and sells used blow molding machines.

BLOW MOLDING: Temperature Probe for PET Preforms

Handheld probe measures internal preform temperature directly, ends guesswork.

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OVERVIEW:
Blow Molding

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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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