Appeal No. 1997-4118
Application No. 08/381,814
such a pipe, consisting of a middle layer of
PVDF bonded by an adhesive bonding agent to two
outer and inner layer of polyamide makes it
possible to reduce the permeability by a factor
of at least 10 when compared with that of an
equivalent polyamide pipe, while maintaining the
other properties, such as the cold impact
strength, within the specification limits of the
motor vehicle manufacturers.
3
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