公开(公告)号：US11078004B2

公开(公告)日：2021-08-03

申请号：US15745621

申请日：2016-07-12

申请人： BOSTIK SA

发明人： Christophe Robert ,  Marc Brestaz ,  Ludovic Sallet ,  Jeremie Peyras-Carratte

IPC分类号： B65D77/20 ,  B32B7/12 ,  B32B25/14 ,  B32B27/08 ,  B32B27/36 ,  B32B27/30 ,  B65D43/02

摘要： A multilayer film: an adhesive layer A: an extrudable hot-melt self-adhesive composition; a complexable thin layer B; and a heat-sealable and cleavable layer C of a linear copolyester C1 obtained by polycondensation of a composition of monomers: at least one diol (i), at least one compound (ii) chosen from terephthalic acid or a diester derivative and at least one compound (iii) chosen from an aromatic or aliphatic dicarboxylic acid or a diester or anhydride derivative; the amounts of the monomers (i), (ii) and (iii) used in the polycondensation such that the softening temperature of C1 is below 190° C.
A process for producing the multilayer film by co-extrusion blow-molding.
A resealable packaging comprising a PET-based receptacle and a seal of said multilayer film, the heat-sealable and cleavable layer (C) of which is heat-sealed on the receptacle.

公开(公告)号：US10000043B2

公开(公告)日：2018-06-19

申请号：US14718215

申请日：2015-05-21

申请人： BOSTIK SA

发明人： Christophe Robert ,  Christophe Notteau ,  Ludovic Sallet

IPC分类号： B29C49/22 ,  B32B7/12 ,  B32B25/08 ,  B32B25/14 ,  B32B27/30 ,  B32B27/32 ,  B32B27/08 ,  B32B37/04

CPC分类号： B32B27/08 ,  B29C49/22 ,  B32B7/12 ,  B32B27/302 ,  B32B27/32 ,  B32B37/04 ,  B32B2250/242 ,  B32B2250/40 ,  B32B2307/31 ,  B32B2435/02 ,  B32B2439/00 ,  B32B2439/40 ,  Y10T428/1352 ,  Y10T428/24975 ,  Y10T428/264

摘要： Multilayer film comprising two thin layers D and E of a thermoplastic material bonded to one another by a continuous layer A that is a hot-melt pressure-sensitive adhesive composition: a composition of styrene block copolymers (a mixture of diblock and triblock copolymers); and one or more tackifying resins with a softening temperature of 5 to 140° C.; the adhesive layer A connected to the layer D via a tie layer B, and connected to the layer E via a tie layer C, B and C being polyethylene or polypropylene modified by a cyclic anhydride of an unsaturated acid having from 4 to 8 carbon atoms, manufacture of the film by coextrusion, and Use of the film for resealable packagings.