Switzerland’s Clariant develops new blow-moulding tools for PET beverage bottles

3 August 2016 (Last Updated August 3rd, 2016 18:30)

Switzerland-based Clariant has developed new blow-moulding tools that enable customers to assess colour and additive masterbatches performance in real-world applications.

Switzerland-based Clariant has developed new blow-moulding tools that enable customers to assess colour and additive masterbatches performance in real-world applications.

The new single-cavity tool can also be used on full-size production blow-moulding machines located in the company's technical centre in West Chicago, Illinois, US.

Designed to reheat stretch blow-moulding of clear or colour polyethylene terephthalate (PET) polyester resins, the new tool can produce a 355ml round bottle with a long neck and curved sides.

"This new mould includes the details that customers told us they wanted in prototype tooling."

The new tool can also be used to produce food and beverage containers, as well as assess performance-enhancing additives and barrier properties.

Clariant Masterbatches North America marketing head Peter Prusak said: "This new mould includes the details that customers told us they wanted in prototype tooling.

"The tooling we've had in the past produced flask-shaped bottles and the broad, flat panels were not as representative of the shapes that producers of liquor bottles and other beverage containers are looking for today."

Prusak also stated that the way plastic materials stretch to create a bottle's shape could change depending on the colour and other ingredients in the compound.

A mix of resin and masterbatch that work perfectly in one shape can create cosmetic flaws or unacceptable physical properties in another.

Therefore, the shapes of end-product containers need to be produced in a precise way.