| 摘要 |
<p>The invention concerns a device for injecting clean fluid into a plastic preform whereof a portion is received in a housing (3), through a cannula (6) mobile in a bore (4) emerging inside the housing (3); a tubular sheath (23) enclosing the cannula (6) is mobile in the bore (4) to be urged to be tightly pressed against the wall of the preform empty housing, so that the cleaning fluid can be blown through the cannula, then recovered and evacuated, so as to clean the cannula.</p> |
