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SBC/PS blend for shrink films

Article-SBC/PS blend for shrink films

One of the first commercial applications for Styrolux HS 70, a styrene butadiene copolymer introduced by supplier BASF (Ludwigshafen, Germany) at the K 2007 tradeshow in Düsseldorf, Germany, are shrink films produced by Italian films processor Axial (Vedano Olona). The processor is already distributing the material to converters throughout Europe.

Compared to available SBC/PS blends, the new film material is said to offer better shrinkage behavior, with films made of the new material able to reach final shrinkage values of up to 80%. The higher the shrinkage percentage, the more flexibility brand owners have in terms of package shape; even odd shapes can be properly labeled.

“Our customer, Sutter, which so far had shrink-wrapped its bottles with a PET shrink film, is now introducing our film made of Styrolux HS 70. This eliminates the so-called "smile effect" – folding, for example, at the neck of the bottle – that up to now had been encountered at the transition from large radii to small radii in objects having a complex geometry,” explains Marco Ruspa, technical manager at Axial. In addition, the new material yields about 30% more film per kilogram than does PVC or PET, and unlike PET it does not require any pre-drying. [email protected]

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