LABELS
PP, OPP, HDPE, MDPE, LDPE, LLDPE, or PVC label stocks are preferred to all other label materials. The preferred label systems are those that incorporate the label on the closure, followed by shrink sleeve labels that require no adhesive. Metalized labels increase contamination and separation costs and should be avoided. The use of PET labels is undesirable and should be scrupulously avoided. Full bottle sleeves should be so designed that automatic sorting equipment can properly identify the resin used to make the bottle.