Enso Oy

Terttu Heinonen N&eacute;e Maatt&auml;

Tapani Penttinen

Matti Salste

Risto Salminen

Tuomo Kuuppo

Jalliina J&auml;rvinen

The present invention relates to a laminated packaging material suitable for use especially in heat-sealable packages for liquid food, such as milk, cream and juice cartons, and to a manufacturing method of the material, and to a food package manufactured of the material. The material comprises a core of paper or cardboard, and oxygen and aroma proof barrier layers of EVOH and polyamide; it is characteristic of the invention that the EVOH layer ( ) and the polyamide layer ( ) are joined together directly without any intermediate adhesive layer, and that the barrier layers and the core ( ) are interposed between polymeric heat-sealing layers ( ) on both sides of the material. The material is manufactured by extrusion so that at least the materials of the said barrier layers ( ) are placed against each other in a molten state and forwarded to the core ( ) in one web.

Growing community of inventors

Joensuu, Finland

Terttu Heinonen Née Maattä

Growing community of inventors

Joensuu, Finland

Terttu Heinonen N&eacute;e Maatt&auml;

Terttu Heinonen Née Maattä