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1. (WO2018121837) MULTILAYER STRUCTURE FOR DIFFUSION OF VOLATILE SUBSTANCES

Pub. No.:    WO/2018/121837    International Application No.:    PCT/EP2016/082693
Publication Date: Fri Jul 06 01:59:59 CEST 2018 International Filing Date: Wed Dec 28 00:59:59 CET 2016
IPC: B32B 7/06
B32B 15/08
B32B 27/20
A61L 9/04
Applicants: ZOBELE HOLDING SPA
Inventors: MORHAIN, Cedric
SORDO, Livio
DEFLORIAN, Stefano
Title: MULTILAYER STRUCTURE FOR DIFFUSION OF VOLATILE SUBSTANCES
Abstract:
The multilayer structure (1) for volatile substances diffusers comprises a semi-permeable layer (2) that can be in contact with the volatile substances and a barrier layer (3) to prevent the diffusion of the volatile substances before its removal from the multilayer structure (1), and it is characterized in that it also comprises a tear layer (4) placed between the barrier layer (3) and the semi-permeable layer (2), which permits the separation of the barrier layer (3) from the semi-permeable layer (2) when the barrier layer (3) is removed from the multilayer structure (1). It permits a suitable interface strength between the barrier layer and the semi-permeable layer, which permits to remove easily and securely the barrier layer from the semi-permeable layer.