Title:
RUBBER EXTRUDER AND METHOD OF SAMPLING EXTRUDED RUBBER
Document Type and Number:
WIPO Patent Application WO/2010/126126
Kind Code:
A1
Abstract:
A rubber extruder which allows a rubber sample to be collected during rubber extrusion operations. A rubber extruder (10) comprises a cylinder (12) and a screw (14) which is disposed within the cylinder (12). A rubber sample extraction path (32a) is provided in the vicinity of the exit-side end of the screw (14) at a position in front of the rubber inlet opening of a pair of gears (22) of a gear pump (20). The rubber extruder (10) also comprises a path opening/closing means (34) provided with a ball valve (34a) for opening and closing the rubber sample extraction path (32a). A portion of rubber extruded by the screw (14) is extracted as a sample by opening and closing the ball valve (34a) with a predetermined timing.
Inventors:
FUJIYAMA KOUTA (JP)
NAKAI YUUKI (JP)
KOYAMA SHOHEI (JP)
NAKAI YUUKI (JP)
KOYAMA SHOHEI (JP)
Application Number:
PCT/JP2010/057661
Publication Date:
November 04, 2010
Filing Date:
April 30, 2010
Export Citation:
Assignee:
BRIDGESTONE CORP (JP)
FUJIYAMA KOUTA (JP)
NAKAI YUUKI (JP)
KOYAMA SHOHEI (JP)
FUJIYAMA KOUTA (JP)
NAKAI YUUKI (JP)
KOYAMA SHOHEI (JP)
International Classes:
B29B7/72; B29C48/08; B29C48/37; B29C48/74; B29C48/92; G01N1/10; B29K21/00
Foreign References:
| JPS60137609A | 1985-07-22 | |||
| JPH05131521A | 1993-05-28 | |||
| US4448736A | 1984-05-15 | |||
| JP2001150515A | 2001-06-05 | |||
| JP2007171117A | 2007-07-05 |
Other References:
See also references of EP 2425957A4
Attorney, Agent or Firm:
NEMOTO, KEIJI (JP)
Keiji Nemoto (JP)
Keiji Nemoto (JP)
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