Adhesion of polyethylene on polypropylene

• Main Authors: DAFFE CHRISTIAN, MARECHAL PHILIPPE, LE COZ PHILIPPE
• Format: Patent
• Language: English
• Published: 05.07.2011
• Subjects: ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; CHEMISTRY; 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; DYES; 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; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; PACKAGES; PACKAGING ELEMENTS; PACKING; PAINTS; PERFORMING OPERATIONS; POLISHES; STORING; TRANSPORTING; USE OF MATERIALS AS ADHESIVES

This invention provides a multi-layer film or sheet prepared by coextruding or laminating polypropylene with one or more polyethylene(s), characterised in that the adhesion between a polypropylene layer and a polyethylene layer is provided by a metallocene-produced polyethylene.