Emballasjelokk, fremgangsmåte for fremstilling av dette, fremgangsmåte for fremstilling av forseglet emballasje, samt forseglet emballasje

• Main Authors: Penttinen, Tapani, Salminen, Risto
• Format: Patent
• Language: Norwegian
• Published: 09.05.2016
• Subjects: ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS,e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES,DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; CONVEYING; HANDLING THIN OR FILAMENTARY MATERIAL; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; PACKAGES; PACKAGING ELEMENTS; PACKING; PERFORMING OPERATIONS; STORING; TRANSPORTING

The invention relates to a lid (1) that can be heat-sealed to the opening of a package (2) and peeled off as the package is opened. In addition, the invention comprises methods for manufacturing such a lid and a package sealed with the lid, and also a sealed package equipped with a lid. The lid (1) consists of a fibrous material layer (6), whichmay be paper or cardboard, a polymer oxygen-barrier layer (7), suitable materials of which are polyethylene terephthalate (PET), ethylene vinyl alcohol copolymer (EVOH) or polyamide (PA), and a polymer heat-seal layer (8). In accordance with the invention, the heat-seal layer (8) combines ethylene methyl acrylate copolymer (EMA), ethylene vinyl acetate copolymer (EVA) and polyamide wax, adherence of the heat-seal layer directly to the oxygen-barrier layer (7) having been allowed without any intermediate binder. During the manufacture of the lid, the oxygen-barrier and heat-seal layers (7, 8) can be applied onto paper or cardboard by coextrusion. The packages equipped with a lid in accordance with the invention comprises boxes, cups or goblets, for instance, into which foodstuffs, such as drinks, nutrients fats or ready-made foods have been packaged.