B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 49/46 (2006.01) C08J 7/12 (2006.01) B29C 49/04 (2006.01)
Patent
CA 2138226
In a process for the production of a hollow body such as a fuel tank from thermoplastic material, the wall thereof is subjected to a two-step treatment to influence the permeation properties of the material. In the first treatment step the wall is subjected to the action of a gas mixture containing fluorine and oxygen while in the second treatment step the wall is subjected to the action of a gas mixture which contains fluorine but is oxygen-free.
Fetherstonhaugh & Co.
Kautex Werke Reinold Hagen Aktiengesellschaft
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