Bottle barrier technology keeps improving.Several advances in boosting oxygen and C[O.sub.2] barrier of PET, PP, and HDPE HDPE abbr. high-density polyethylene food bottles were announced by Owens-Illinois, M&G Polymers USA, and PPG Industries. * O-I's Plastics Group in Toledo, Ohio, has developed a delamination-resistant version of its SurShot multi-layer, passive-barrier system for PET and polyolefin bottles. Delamination delamination /de·lam·i·na·tion/ (de-lam?i-na´shun) separation into layers, as of the blastoderm. de·lam·i·na·tion n. 1. A splitting or separation into layers. 2. most often occurs at embossed em·boss tr.v. em·bossed, em·boss·ing, em·boss·es 1. To mold or carve in relief: emboss a design on a coin. 2. or paneled points in containers. O-I responded by reformulating materials for improved adhesion. Also, O-I worked with Husky Injection Molding Systems, in Bolten, Ont., to adapt the Surshot system for use with Husky's new 144-cavity preform injection tools. The breakthrough is barrier thickness control in tools with such high cavitation cavitation Formation of vapour bubbles within a liquid at low-pressure regions that occur in places where the liquid has been accelerated to high velocities, as in the operation of centrifugal pumps, water turbines, and marine propellers. . O-I: (800) 537-0178, www.o-i.com; Husky: (905) 951-5000, www.husky.ca * Houston-based M&G just launched ActiTuf barrier resins in the U.S. The active and passive barrier system extends shelf life in monolayer mon·o·lay·er n. 1. A film or layer one molecule thick formed at the interface between water and either oil or air by a substance such as a partially esterified fatty acid that contains both hydrophobic and hydrophilic groups in the same PET bottles. It has been adopted for boer bottles in Europe. Preforms are made on standard equipment without sacrificing throughput. The scavenger acts only after the bottle has been filled. ActiTuf costs 15 cents to 30 cents/lb more than standard PET. Tel: (281) 873-5780, www.mgpolymers.com * PPG PPG Points Per Game (basketball player statistic) PPG Power Play Goals (hockey) PPG Planning Policy Guidance (UK) PPG Programmable Pulse Generator PPG Power Puff Girls in Milford, Ohio, has introduced a higher-barrier version of its spray-applied barrier coating for PET, HDPE, and PP bottles. Bairocade HP confers gas and oxygen barrier equivalent to the original version in containers that have 40% thinner walls. The new coating can be washed off for bottle recycling. Tel: (513) 576-3104, www.ppg.com [ILLUSTRATION OMITTED] |
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