APPAREIL POUR FABRIQUER DES GAINES TUBULAIRES EN MATIERE PLASTIQUE DESTINEES A ETRE APPLIQUEES A DES RECIPIENTS

• Main Author: ROBERT JAMES BURMEISTER
• Format: Patent
• Language: French
• Published: 18.11.1983
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; 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; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

L'APPAREIL SELON LA PRESENTE INVENTION COMPREND UNE TOURELLE ROTATIVE 17, UNE SERIE DE MANDRINS CYLINDRIQUES ROTATIFS 16 MONTES SUIVANT UNE DISPOSITION RADIALE SUR LADITE TOURELLE, UNE BAGUE METALLIQUE ANNULAIRE 18 MONTEE SUR LA TOURELLE EN FACE DES MANDRINS, UNE SERIE DE BARRES DE SOUDAGE 19 POUVANT EFFECTUER UN MOUVEMENT DE VA-ET-VIENT ET MONTEES SUIVANT UNE DISPOSITION RADIALE SUR LADITE BAGUE METALLIQUE ANNULAIRE, CES BARRES DE SOUDAGE POUVANT VENIR PORTER, D'UNE PART, DANS LEUR POSITION D'EXTENSION CONTRE LES EXTREMITES SUPERPOSEES DES FLANS DE MATIERE PLASTIQUE THERMORETRACTABLE VENANT S'ENROULER, A PARTIR D'UN TAMBOUR D'AMENEE 15, AUTOUR DESDITS MANDRINS ET, D'AUTRE PART, DANS LEUR POSITION RAPPELEE, CONTRE LA BAGUE ANNULAIRE OU ELLES SONT CHAUFFEES PAR DES ELEMENTS ELECTRIQUES DU TYPE A CARTOUCHE MONTES DANS CETTE BAGUE. This disclosure relates to apparatus for forming tubular sleeves of heat-shrinkable cellular polymeric material from a predecorated web or roll. Predecorated body labels having precisely presized dimensions are formed from a web or roll on a turret type machine by serially winding rectangular thin sheet blanks of such material on cylindrical mandrels and overlapping the ends of each blank prior to seaming the same to make a presized tubular sleeve. The sleeve seam is formed by thermal fusion using an improved heated sealing bar which is heated during its retraction into contact with an improved annular metallic support ring having a series of internal cartridge type heaters therein. The ring is adapted to rapidly heat up and accurately control the heating of the sealing bars to a precise uniform temperature for improved sleeve making. The sleeves are then applied serially to either glass or plastic containers. The sleeves once formed are transferred axially onto the containers for subsequent thermoconstrictive heat-shrinking into final disposition on the container body portion.