Heat shrinkable envelope
AssigneeRXS Schrumpftechnik-Garnituren GmbH
InventorsUwe Brudermann, Hans-Juergen Meltsch
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Abstract
A heat-shrinkable envelope is composed of at least one shrinkable planar layer on which a reinforcing component of fiber-shaped or thread-shaped reinforcing elements is arranged. These reinforcing elements are arranged in unregulated configuration, for example in the form of a fleece, felt or in an irregular fill. Advantageously, a cover layer may be applied so as to sandwich and bond the reinforcing component between the cover layer and the planar layer.
Claims35
In a heat-shrinkable envelope having at least one stretchable and shrinkable component in the form of a planar layer, a reinforcing component and a cover layer joined to the shrinkable component with the reinforcing component therebetween, the improvement comprising:
- said reinforcing component comprising a randomly disposed open-pore arrangement of fibers, the longitudinal axes of which are in planes essentially parallel to said planar layer, said arrangement being one which imparts isotropic characteristics of stretchability and heat-shrinkability to said reinforcing component, and said parallel arrangement being a characteristic of the envelope in the heat-shrunk state;
- said fibers of said reinforcing component disposed in arbitrary directions before and after motion events caused by stretching and shrinking of said shrinkable component and having longitudinal axes extending substantially parallel to said planar layer;
- and
- fixing means for bonding the fibers of said reinforcing component to said shrinkable component and to said cover layer before stretching of said shrinkable component and for causing said fibers to remain bonded to said shrinkable component and to said cover layer as said shrinkable component shrinks.
Dependencies are inferred from the claim text.