| 摘要 |
A structure successively comprising: a layer of barrier polymer, a tie lay er comprising, the total being 100%: 1 to 80% of at least one polyethylene carrying epoxy functional groups, 99 to 20% of at least one viscous polymer compatibl e with the polyethylene carrying epoxy functional groups, a polyethylene layer , and optionally another tie layer and a layer of barrier polymer, the layers adhering in their respective contact zones. According to one alternative for m of the invention, if the viscous polymer compatible with the polyethylene carrying epoxy functional groups is a polyethylene and if the blend of this viscous polyethylene compatible with the polyethylene carrying epoxy functional grou ps has sufficient mechanical strength to be able to be coextruded with the barrier polymer, then it is possible to dispense with the polyethylene layer which i s adjacent to the tie layer. This structure is of use in preparing devices for the storage or transfer of fluids, in particular in motor vehicles. The inventio n also relates to these devices. These devices can be pipes, tanks, bottles or containers in which the layer of barrier polymer is in contact with the stor ed or transported fluid. These structures can comprise other layers composed of other materials.
|
