发明名称 |
FRAMSTAELLNINGSFOERFARANDE AV EN SLANG VARS INSIDA AER FOERSEDD MED BELAEGGNING ANORDNING FOER GENOMFOERANDE AV FOERFARANDE SAMT SLANGENS ANVAENDNING |
摘要 |
Disclosed is a process for coating the inside of a length of tubing comprising the steps of forming at least one loop of tubing with a downwardly inclined portion and an upwardly inclined portion; filling the cavity of the tubing forming the loop with a coating liquid; transporting the tubing along its longitudinal axis in a substantially vertically upward direction to coat the inside surface of the tubing above the level of the coating liquid with an initial layer of coating liquid; constricting the tubing adjacent to and above the level of the coating liquid with a metering device having a constriction zone which flattens a portion of the tubing passing therethrough to substantially eliminate all of the initial layer thereon and partially flattens the remaining portion of the tubing to allow a desired quantity of coating liquid to remain on the tubing issuing from the constriction zone; filling the cavity of the tubing issuing from the constriction zone with support gas; and, exposing the tubing to the action of heat at a sufficiently high temperature to fuse the coating layer to the inside thereof and form an uninterrupted film. Also disclosed is an apparatus for carrying out the process. |
申请公布号 |
FI68773(B) |
申请公布日期 |
1985.07.31 |
申请号 |
FI19810000939 |
申请日期 |
1981.03.26 |
申请人 |
HOECHST AG |
发明人 |
BECKER REINHOLD;KAELBERER HEINZ;REGNER RICHARD |
分类号 |
A22C13/00;B05C7/04;B05C7/08;B05D7/22 |
主分类号 |
A22C13/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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