to enable consumers easily to detach the plastic top from the carton sleeve, allowing for separate recycling. according to the foods packaging giant, a precut perforation on the outer layer of the cardboard sleeve of a carton allows the consumer to separate the plastic tetra top from the sleeve with a simple press of the thumb. tetra pak describes tetra top as a package that &ldquocombines the convenience of a bottle with the contemporary look and feel of a carton package&rdquo, suitable for chilled products and ambient still drinks. arla foods in denmark and sweden has already introduced tetra top with separable top into its product range. source httpwww.foodbev.comnewstetratopwithseparabletopenablessep.uviovwksxaz