Bridgestone Corporation

Nissan Chemical Industries Limited

Masami Adachi

Takao Urayama

Shoji Takahashi

Hideo Suzuki

Masaharu Sumiuchi

Kunio Tajima

Yukitaka Okafuji

Masaru Suzuki

Hiroshi Akabayashi

Yoshihisa Ogawa

Eiji Ohyama

Susumu Shoji

Kanji Ohtsuka

Takashi Nishiyama

Daisaku Takabayashi

Koretoshi Uemura

Provided is a method for manufacturing a pneumatic tire capable of easily and appropriately winding a sheet lamination body formed by a resin film and an unvulcanized rubber sheet around a shaping drum. In the method for manufacturing a pneumatic tire including conveying a sheet lamination bodyto a shaping drum, and winding the conveyed sheet lamination bodyin a position that a resin filmis located on the inner side while causing an outer peripheral surface of the shaping drumto retain the conveyed sheet lamination body, a resin film protrusion portionis formed by making a leading edgeof the resin filmprotrude toward a downstream side in a conveying direction A than the leading edgeof the unvulcanized rubber sheetas viewed in the conveying direction A at the time of attaching the resin filmon a surface of an unvulcanized rubber sheet, and the outer peripheral surface of the shaping drumis caused to retain in advance the resin film protrusion portionto wind the sheet lamination bodyon the outer peripheral surface of the shaping drum

Method for manufacturing a pneumatic tire

Apparatus for highly reliably cutting a rubber strip () even when reinforcement cords are embedded therein, and for shaping the upper surfaces of the trailing end of a resultant rubber band member () and the leading end of the remaining rubber strip () to have a slope inclined with a small angle relative to the general plane of the rubber strip () or rubber band member (). An anvil () and a press cutter/shaper () are arranged opposite to each other, and a cutting blade () is gradually inserted into an anvil groove (), with at least one surface () of the blade () pressed against a periphery () of the anvil groove (). The cutting blade () protrudes from the boundary between inclined a pair of shaping surfaces () towards the anvil, and has a cutting blade angle (F) that is smaller than angle (G) between the inclined shaping surfaces ().

Apparatus for cutting and shaping rubber band members

Method and apparatus for highly reliably cutting a rubber strip ( ) even when reinforcement cords are embedded therein, and for shaping the upper surfaces of the trailing end of a resultant rubber band member ( ) and the leading end of the remaining rubber strip ( ) to have a slope inclined with a small angle relative to the general plane of the rubber snip ( ) or rubber band member ( ). An anvil ( ) and a press cutter/shaper ( ) are arranged opposite to each other, and a cutting blade ( ) is gradually inserted into an anvil groove ( ), with at least one surface ( ) of the blade ( ) pressed against a periphery ( ) of the anvil groove ( ). The cutting blade ( ) protrudes from the boundary between inclined a pair of shaping surfaces ( ) towards the anvil , and has a cutting blade angle (F) that is smaller than angle (G) between the inclined shaping surfaces ( ).

Method for cutting and shaping rubber band members

A method and apparatus for forming a tire in which an inner circumference of a tire carcass is wrapped around a tire bead by being grasped by an expanding air bladder against a stopper plate. The stopper plate, with the bladder still inflated is raised relative to the bead and main tire carcass and then moved into the annular portion of the tire carcass to encase the bead.

Method for forming a tire around a bead

A compound represented by the general formula: ##STR1## where each A is --OH or --OR where R is an alkyl group, an alkenyl group or a cycloalkyl group, or both A together represent a &gt;O group.

Dicyclopentadiene dicarboxylic acid derivatives and process for their

A plasticizer composition comprises phthalates of C.sub.9 alcohols obtained by an oxo reaction and a hydrogenation of C.sub.8 olefins which have 3 to 20 wt. % especially 7 to 20 wt. % of olefins having one isobutane skeleton and less than 3 wt. % of olefins having quaternary carbon and more than 90 wt. % of a total of n-octenes, monomethylheptenes and dimethylhexenes and more than 0.8 especially 1.1 to 2.0 of a ratio of a total of n-octenes and monomethylheptenes to dimethylhexenes.

Plasticizer composition

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Kodaira, Japan

Masami Adachi