Bostik Sa

Christophe Robert

Jean-Francois Chartrel

Jeremie Peyras-Carratte

Christophe Notteau

Jean-François Chartrel

Romain Puchois

Ludovic Sallet

Myriam Grisot-Saule

Marc Brestaz

Isabelle Tournoud

Amandine Rafaitin

Thomas Fini

Lahoucine Idttalbe

Fabienne Lebreil

Jérémie Peyras-Carratte

Herve Le Gras

Jean François Chartrel

A multilayer film comprises an adhesive layer A comprising an HMPSA composition (a); a complexable thin layer B comprising a PolyEthylene (PE) composition (b); and a heat-sealable and breakable layer C comprising a PolyEthylene (PE) composition (c). Layers B and C are bonded together by layer A. The film is characterized in that (i) the melt flow indices of compositions (b) and (c), denoted MFI(b) and MFI(c), respectively, are each between 2.5 and 15 g/10 minutes; and (ii) the melt flow index of composition (a), denoted MFI(a), is such that the ratios MFI(a)/MFI(b) and MFI(a)/MFI(c) are each between 1.5 and 10. A process for manufacturing the film comprises flat sheet coextrusion of composition (a) and of compositions (b) and (c) at a temperature of between 150° C. and 250° C. The multilayer film can be used for the manufacture of resealable packaging.

Multilayer film for reclosable package with a polyethylene layer obtained by flat sheet coextrusion

1) An HMPSA composition comprising: 2) A multilayer system comprising: 3) The use of said multilayer system for the manufacture of self-adhesive articles.

HMPSA incorporating a plasticiser made from a renewable raw material

1) Multilayer film comprising 2 thin layers D and E of a thermoplastic material bonded together by a continuous layer A consisting of a hot-melt pressure-sensitive adhesive composition comprising: said multilayer film being such that the adhesive layer A is: each of the 2 layers B and C respectively consisting of a composition (b) and (c) each comprising: 2) Process for producing said film by coextrusion. 3) Use of said film for producing resealable packagings.

Multilayer film for resealable packaging with improved resealing

A multilayer film: the amounts of the monomers (i), (ii) and (iii) used in the polycondensation such that the softening temperature of C1 is below 190&#xb0; 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.

Multilayer film for reclosable pet packaging

The invention relates to a gluing process of an adhesive composition with the use of a gluing nozzle having an extrusion die for continuous extrusion of an adhesive composition over a predetermined width, the extrusion die () comprising a lower lip () and an upper lip (), the upper and lower lips () extending parallel to one another so as to form a transverse channel () for the longitudinal flow of the adhesive composition, the transverse channel extending longitudinally between: a supply opening () for supplying the adhesive composition; and an extrusion outlet () for extrusion of the adhesive composition (); the channel () comprising a concave volume () for relaxation of the adhesive composition between the supply opening () and the gluing outlet ().

Continuous gluing process of an adhesive composition with a gluing nozzle having an extrusion die with a relaxation volume

1) Hot-melt pressure-sensitive adhesive composition with MFI of 0.01 to 200 g/10 minutes and comprising:

Extrudable hot-melt pressure-sensitive adhesives for resealable packaging having improved organoleptic properties

A subject of the present invention relates to a multilayer (or laminate) film, that can be used in the field of flexible wrapping, comprising at least 2 thin layers of material bonded together by a layer of an adhesive composition based on a styrene block copolymer. It also relates to a lamination process suitable for the manufacture of said film.

Multilayer film for flexible wrapping

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:

Multilayer film for resealable packaging having improved resealing

The invention relates to biodegradable hot-melt adhesive compositions, preferably without residual tackiness at room temperature and having a biodegradability, as measured by the released carbon-dioxide analysis method pursuant to Standard EN ISO 14855, that is higher than 55% , preferably higher than 60% , and preferably higher than 90% , and to the use thereof. This percentage is given by reference with the cellulose biodegradability measurement, which amounts to 100% in the same conditions.

Growing community of inventors

Thourotte, France

Christophe Robert