WIEDERVERSCHLIESSBARE DRUCKVERSCHLUSSBÄNDER MIT ORIGINALITÄTSICHERUNGSELEMENT

• Main Authors: SHARE, LAWRENCE, RASKO, GEORGE
• Format: Patent
• Language: German
• Published: 15.08.2002
• Edition: 7
• Subjects: ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE; 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; HABERDASHERY; HANDLING THIN OR FILAMENTARY MATERIAL; HUMAN NECESSITIES; JEWELLERY; PACKAGES; PACKAGING ELEMENTS; PACKING; PERFORMING OPERATIONS; PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; STORING; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

A plastic bag (30) having a reclosable plastic zipper (42) is provided with a tamper-evident, non-reclosable peel seal (40) formed by applying an adhesive (38) to a treated strip adjacent to the interlocking zipper (42). The treatment is preferably by corona discharge, which causes the adhesive used to provide the peel seal to preferentially adhere to the treated strip when the peel seal is broken. A method for manufacturing the reclosable plastic zipper includes the steps of extruding a zipper profile, treating a portion of its surface, preferably by corona discharge, applying an adhesive to the treated portion, slitting the profile lengthwise, and folding over one of the resulting sides of the zipper to interlock them with one another.