PELICULA DE MULTIPLAS CAMADAS E EMBALAGEM FEITA A PARTIR DA MESMA

• Main Authors: JEAN ELIZABETH, RANIERE, RUSSEL PAUL GEHRKE, RICHARD EUGENE JOHNSON, JR, STEVEN LOUIS SMITH
• Format: Patent
• Language: Portuguese
• Published: 02.08.1988
• Edition: 4
• 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

A multiple layer film (10) is useful in packaging, and the packages (26) in the form of pouches are made therefrom. A first layer (14) of the film is a material containing an ester group, a polycarbonate or a polyether block amide copolymer. A second layer (12) of the film is a sealant, preferably polypropylene polymer blended with an elastomeric styrene ethylene butylene styrene copolymer. A third layer (16) is disposed between the first and second layers and functions as an adhesive, the third adhesive layer typically being either a polypropylene modified with a carboxy group such as an organic acid or anhydride or a styrene ethylene butylene styrene copolymer.