PETpla.net Insider 06 / 2013

44 PET planet insider Vol. 14 No. 06/13 www.petpla.net PET bottles Beverages & Liquid Food White tea with Acai Teeküche GmbH based at Kempten in Germany are sell- ing 1l of quality manufacture, refined white tea flavoured with cranberry/acai in a transparent PET bottle. The bottle, with its individual shape, incorporates reinforcement grooves under the all-round paper label and, in the neck area, embossing in the shape of a tea leaf. A tamper-proof screw closure in green completes the packaging. www.ti-erfrischungstee.de Form and function come together Sipa developped a ketchup bottle that stays in shape after filling. Numerous computer simulation tests provided accu- rate predictions of bottle design behaviour after the bottles have been hot-filled. The problem normally encountered with hot filling plastic bottles, particularly those with long necks some- times used for ketchup, is that, when the contents cool, their volume reduces and creates a partial vacuum. The bottle walls collapse, and the label becomes partly or completely unstuck. To stop the vacuum effect which ruins the package, Sipa’s designers took an existing ketchup bottle design, shortened the neck and softened the angles around the bottle body to prevent the collapsing and provided an attractive appearance. This bottle can be filled between 85 and 90°C, stays in shape afterwards, and prevents “label crinkling. It can be produced on Sipa’s SFR rotary stretch-blow moulding systems equipped with an oven intended for heat- set and oval containers. Making this type of bottle does require a special PET resin suitable for the heat setting process used for hot-fill containers.The resin also needs to contain an oxygen scavenger to stop the ketchup oxidising and discolouring over time. With a suitable scavenger, the container can have a shelf life of at least 12 months. Sipa has already carried out successful tests using Amosorb, which is produced by ColorMatrix, a member of the PolyOne group. www.sipa.com Clean dispensing For its sauces sold under the Knorr brand name, Unilever Ger- many has fitted its squeeze bottles made from PET with an improved dispensing cap. A 2-colour hinged lid incorporating a tapered inner section and a silicone valve is screwed on to the upright bottle which has a content of 250ml. One part of the transparent segment is flipped open by means of a hinge and held in this position. Product is expelled by applying pressure to the bottle and the valve is locked in its rest position once pressure is removed and the lid snapped shut. Prior to initial opening a sealing membrane needs to be removed. www.knorr.de BERICAP the plastic closure company committed to your success www.bericap.com Research and Development Developing closure solutions to meet your specific requirements Mould Technology A detailed understanding of mould design with in-house mould making facilities in Hungary and Germany Global Presence Local production in 21 strategically located factories. An on-going strategy of stregthening our global presence Capping Technology and Know-How Special advice on capping technology with on-going technical support Innovation and Flexibility Our broad range of plastic closures is the basis for generating new innovation. Our expertise covers aseptic, hot fill, barrier, anti-counter- feiting TE-systems, consumer convenience and child resistance