INDICATOR FILM

• Main Authors: LYNCH, Stuart Russell Cahill, SKINNER, Graham Alexander
• Format: Patent
• Language: English; French
• Published: 23.09.2021
• 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; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGINGARTICLES OR MATERIALS; MEASURING; PACKAGES; PACKAGING ELEMENTS; PACKING; PERFORMING OPERATIONS; PHYSICS; STORING; TESTING; TRANSPORTING; UNPACKING

A self-supporting film (10) comprises a gas barrier layer (20); a semi-permeable layer (40); and an indicator material (30), preferably a colorimetric indicator material, is provided between the gas barrier layer (20) and the semi-permeable layer (40). The indicator material (30) is in direct contact with the gas barrier layer (20). The film (10) is particularly useful as an item of packaging, particularly in packaging for perishable materials. Un film autoportant (10) comprend une couche barrière aux gaz (20) ; une couche semi-perméable (40) ; et un matériau indicateur (30), de préférence un matériau indicateur colorimétrique, est disposé entre la couche barrière aux gaz (20) et la couche semi-perméable (40). Le matériau indicateur (30) est en contact direct avec la couche barrière aux gaz (20). Le film (10) est particulièrement utile en tant qu'article d'emballage, en particulier dans le conditionnement de matières périssables.