Title:
MONOLAYER FOAMED CORRUGATED SLEEVE
Document Type and Number:
WIPO Patent Application WO2004013526
Kind Code:
A3
Abstract:
A monolayer foamed corrugated sleeve for protecting elongate substrates is disclosed. The sleeve is extruded from a polymer and a foaming agent. The polymer may be a non-elastomeric thermoplastic, a thermoplastic elastomer or a combination of the two. The sleeve is extruded from a nozzle having a cross sectional area which decreases along its length to maintain pressure on the extrudate and prevent premature foaming. The extrudate is released from the nozzle into moving mold blocks. A blow rod within the mold blocks provides gas pressure to force the extrudate against the blocks. An obturation device is mounted on the blow rod to control the gas pressure.
Inventors:
FATATO FRANCIS B (US)
STAUDT ERIC K (US)
STAUDT ERIC K (US)
Application Number:
PCT/US2003/017363
Publication Date:
September 02, 2004
Filing Date:
June 02, 2003
Export Citation:
Assignee:
FEDERAL MOGUL POWERTRAIN INC (US)
FATATO FRANCIS B (US)
STAUDT ERIC K (US)
FATATO FRANCIS B (US)
STAUDT ERIC K (US)
International Classes:
B29C44/10; B29C44/30; B29C48/09; B29C48/13; B29C48/30; B29C49/00; B29C49/58; (IPC1-7): F16L11/00
Foreign References:
| US5324557A | 1994-06-28 | |||
| US3677676A | 1972-07-18 | |||
| US4970351A | 1990-11-13 | |||
| US4874649A | 1989-10-17 | |||
| US4198363A | 1980-04-15 | |||
| US4003685A | 1977-01-18 | |||
| US4305703A | 1981-12-15 | |||
| US4655986A | 1987-04-07 | |||
| US4988279A | 1991-01-29 |
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