PETpla.net Insider 01+02 / 2019

PREFORM PRODUCTION 11 PET planet Insider Vol. 20 Zero Cooling however is said to allow for the use of smaller, thicker preforms that can be moulded much faster than previously possi- ble because cooling is con- ducted in the conditioning station simultaneously with the next injection cycle. Furthermore, since the material strength has been improved by better orienta- tion, more scope is available to apply additional light- weighting to a container’s specification. Visual quality & stability Large, thin preforms with low stretch ratios are prone to produce visual defects in the finished container, most notably “fisheye”, “body ring” and “orange peel”, all of which are undesirable. The increased material orientation achieved by the smaller, thicker preforms of Zero Cooling eliminates any risk of these faults resulting in high visual quality. The advanced cooling method also enables the moulding of heavy-weight premium cosmetic contain- ers in very short cycle times using standard PET grades while exhibiting no haziness, says Nissei ASB. www.nisseiasb.co.jp Fig.4 Comparison Zero Cooling and standard moulding Fig.3 Smaller preforms provide higher stretch ratios. SIPA S.p.A. - Via Caduti del Lavoro, 3 - 31029 Vittorio Veneto (TV) - Italy Tel. +39 0438 911511 - Fax +39 0438 912273 - email: sipa@zoppas.com We make it happen. www.sipa.it Imagine a totally new operator experience. Designed to adapt. Built to last. Preform Systems T H E MO ST E NE R G Y E F FIC IE N T S YST EM bel o w 1 95 W /k g