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1. (WO2017148771) A WELDING PROMOTING ELEMENT FOR A CLOSURE OF AN OPENING DEVICE

Pub. No.:    WO/2017/148771    International Application No.:    PCT/EP2017/054068
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Thu Feb 23 00:59:59 CET 2017
IPC: B65D 5/74
Applicants: TETRA LAVAL HOLDINGS & FINANCE S.A.
Inventors: CAVANNA, Diego
VERONESI, Livio
CEREDA, Massimiliano
CORRADI, Davide
DE PAOLA, Rocco
DIDONNA, Domenico
Title: A WELDING PROMOTING ELEMENT FOR A CLOSURE OF AN OPENING DEVICE
Abstract:
A welding promoting element for an opening device is insertable into a lid (25) of said opening device to connect said lid (25) to a closing element (10) closing a pouring opening (14) of said opening device; the welding promoting element comprises a sheet element (31) provided with a layer (32) of electrically conductive material, with a first layer (33) of heat-sealable plastic material and with a second layer (34) of heat- sealable plastic material arranged on opposite sides of said layer (32), said layer (32) having a thickness comprised in the range 5-15 µm and each of said first layer (33) and second layer (34) having a thickness comprised in the range 10-50 µm.