MULTILAYER FILM

• Main Authors: KOSTYRA, Sebastian, PÜRKNER, Eckhard, HEEMANN, Marcus, KASPER, Dirk
• Format: Patent
• Language: English; French; German
• Published: 13.11.2019
• Subjects: ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; 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; ORGANIC MACROMOLECULAR COMPOUNDS; PACKAGES; PACKAGING ELEMENTS; PACKING; PAINTS; PERFORMING OPERATIONS; POLISHES; STORING; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF MATERIALS AS ADHESIVES

The invention relates to a hotmelt adhesive comprising 10 to 40 wt % of at least one branched styrene-isoprene-styrene block copolymer having a weight percentage diblock fraction in the polymer of less than 30% and a melt flow index of less than 5 g/10 minutes at 200° C. under a test load of 5 kg; 0 to 40 wt % of at least one styrene polymer or styrene copolymer; 20 to 60 wt % of at least one tackifying resin; 0 to 15 wt % of at least one plasticizer; and 0 to 16 wt % of additives and auxiliaries selected from stabilizers, adhesion promoters, fillers or pigments, waxes and/or other polymers. Also included are the use thereof to bond films, and products, especially packaging products, that include this adhesive.