Tetra Laval Holdings & Finance S.a.

Paul W Ackermann

Hans Johansson

Thorbjo/ Rn Andersson

Packaging laminate for conversion through fold forming and sealing to a packaging container with good gas and aroma barrier properties. The packaging laminate has a skeletal layer and a gas and an aroma barrier layer, placed on one side of the skeletal layer, of an organo-functional siloxane polymer which, by means of co-valent bindings, is bound to the skeletal layer by a layer of polyolefine placed between the skeletal layer and the gas and aroma barrier layer. The packaging laminate can be manufactured through coating one side of a strip of a polyolefine coated paper or cardboard or of polyolefine with a layer of an organo-functional siloxane polymer solution, then drying the layer and finally hardening the dried layer through electron radiation in order to bind the layer co-valently to the strip.

Packaging laminate with good gas and aroma barrier properties and method

A method of recovering individual material components such as metal, plastic and, where applicable, paper or cardboard, from waste of laminated packaging material comprising layers of metal, plastic and possibly paper or cardboard. The layers of metal and plastic are separated from each other and from the possibly present paper or cardboard layer by treating the waste with an organic acid or a mixture of organic acids selected from among formic acid, acetic acid, propanoic acid, butyric acid and similar volatile organic acids, preferably acetic acid alone.

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Leinfelden-Echterdingen, Germany

Paul W Ackermann