Part-I - Controller General of Patents Designs and Trademarks

(12) PATENT APPLICATION PUBLICATION (21) Application No.1178/CHE/2012 A
(19) INDIA
(22) Date of filing of Application :28/03/2012 (43) Publication Date : 21/06/2013
(54) Title of the invention : APPARATUS AND METHOD FOR MANUFACTURING RAW RUBBER STRIP
(51) International classification :B29C (71)Name of Applicant :
(31) Priority Document No
:2011- 1)SUMITOMO RUBBER INDUSTRIES, LTD.
127573 Address of Applicant :6-9, WAKINOHAMA-CHO 3-
(32) Priority Date :07/06/2011 CHOME, CHUO-KU, KOBE-SHI, HYOGO 651-0072 Japan
(33) Name of priority country :Japan (72)Name of Inventor :
(86) International Application No
Filing Date
:NA
:NA
1)NAKAMURA, YOSHINOBU
(87) International Publication No : NA
(61) Patent of Addition to Application Number
Filing Date
:NA
:NA
(62) Divisional to Application Number
Filing Date
:NA
:NA
(57) Abstract :
An apparatus for intermittently manufacturing a raw rubber strip comprises a screw extruder, an extruder head having a
preforming nozzle, a gear pump therebetween, a pair of calender rolls, a roll-gap changer for switching between a close state and
an open state of calender rolls, and a controller for controlling the gear pump, the calender rolls and the roll-gap changer to let the
calender rolls in the open state prior to the stopping of the rotation of the calender rolls.
No. of Pages : 30 No. of Claims : 8
The Patent Office Journal 21/06/2013 13693