Macro Engineering & Technology Inc., Mississaugua, Ontario, has sold its 60th double-bubble line for shrink film. The sale was to a South American producer of shrink bags, and is the 10th machine of its type the customer has purchased. Macro produces double-bubble extrusion lines for barrier, polyolefin and polyvinylidene chloride applications, as well as manufacturing lines for cast and blown film, sheet and foam.