PETpla.net Insider 03 / 2012

PREFORM PRODUCTION 17 PET planet insider Vol. 13 be melted at about 280ºC (536ºF) +/- 10ºC (18ºF). Reduce as necessary. 8. Check that the decom- pression (pullback) time and position is not too little. This should be set high enough to ensure the melt pressure is being released, yet as low as possible to minimize the risk of drawing in air. Typical settings for valve gated moulds are: Time = 0 – 1sec; Distance = 0 – 10mm. Non-valve gated moulds may require higher values to minimize gate string- ing. 9. Check the valve gate open delay timer and increase as necessary to release preform pres- sure. Typical settings are 0 – 0.3sec. This adjustment must work together with decom- pression (pullback) time. 10. Check that no debris, colorant buildup, or obstructions are on the cavity surfaces that may restrict preform release. Clean or repair as necessary. 11. Check hardware for worn, damaged or failed components, specifically the mould cavities, gate inserts, valve stems, and clogged cavity cooling channels. www.petpla.net PET planet print vol.6 The Rapid Guide to Perfect Preforms machine no./name > stretch-blow moulding and filling machines > shrinkwrappers > wrap-around casepackers > conveyor systems > palletisers SMI S.p.A. -Via Piazzalunga, 30 - 24015 San Giovanni Bianco (BG) - ITALY Tel. +39 0345 40111 - Fax +39 0345 40209 - info@smigroup.it - www.smigroup.it ECOBLOC ® PLUS integrated system Reduce the distances between preform and label! The integrated systems in the Smiform ECOBLOC® PLUS series bring together in a single machine the operations of stretch-blow moulding, filling, capping and labelling of PET containers and are the ideal solution for bottling lines of still and sparking soft drinks, milk and edible oil up to 36,000 bph. The ECOBLOC® PLUS systems stand out for their modular and compact structure and for the high technological content of the proposed solutions, which ensure high performance in terms of efficiency and operative flexibility, ease of running and maintenance, low energy consumption and maximum respect of the environment. ECOBLOC ® PLUS SERIES: the “green” solution which saves you space and energy PETplanet print Vol. 6: The Rapid Guide to Perfect Preforms by Rick Unterlander and Ottmar Brandau fax: +49 (0) 6221-65108-28 info@hbmedia.net www.petpla.net Order your copy now! 1- 3 exemplar each 129,- € 4 - 10 exemplar each 99,- € > 10 exemplar each 69,- € prices in EUR + VAT.