Flame-sprayed thermoplastic substrate is coated with an adhesive layer which bonds particles of an adsorbent like carbon to the substrate
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United States of America Patent
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Dec 16, 1980
Grant Date -
N/A
app pub date -
Jan 15, 1979
filing date -
Jan 15, 1979
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The thermoplastic polymeric surface to be adhesively bonded is flame-sprayed with a material having a surface free energy which is greater than the surface free energy of the thermoplastic polymeric surface. In a specific application of the invention, a particulate coating is formed on the thermoplastic polymeric surface by flame spraying the surface with a material selected from the group consisting of carbon, ceramics, metal, metal oxides, metal alloys, and mixtures thereof. An adhesive coating is applied to the flame-sprayed surface, following which particulate material is applied to the adhesive-coated substrate to form the particulate coating.
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