| 摘要 |
Case 3440 Multi-layer sandwich sheet and packaging using the said sheet Multi-layer laminated sandwich sheet, comprising at least two layers which are superimposed and stuck together by welding or gluing, one of which being constituted by a material impervious to the active volatile agents of a perfuming or deodorizing composition, of an aroma or of an insecticidal or bactericidal substance, and the other being composed of a film made from a polymer or a copolymer with a polyolefin base or from a copolymer of polyamide and polyether,which film contains, in dispersed and homogeneous phase, a base constituted by aperfuming or deodorizing composition, an aroma or an insecticidal or bactericidal substance, and a process for its manufacture. Packaging manufactured with the help of the said sheet. |
