Abstract: A thermoformed plastic package with integrated predetermined breaking points formed by discrete regions in the plastic matrix at which points the mechanical properties of the plastic have been modified by action of a laser beam.

Abstract: A cup-like package of plastic for substantially flowable or pourable products is described. It includes a one-piece receptacle, the top filling and removal opening of which is sealed by a peel-off cover film. The cover film, which is of plastic, has a surface texturing.

Abstract: A plastic pipe comprising an oxygen-impermeable casing, wherein the casing comprises a barrier layer for oxygen, and an adhesive layer adjacent to the circumferential surface of the pipe and attached to the circumferential surface by an sealed bond, wherein the casing surrounds the circumferential surface on all sides, and wherein the barrier layer is elastic, is substantially impermeable to oxygen and comprises a polyvinyl alcohol, a vinyl alcohol/ethylene copolymer, or polyacrylonitrile. Also disclosed is a process for the production of the pipe and a use of the pipe as a heating pipe.