Teijin Limited

Matsushita Electric Industrial Co., Ltd.

Hirosuke Watanabe

Shoji Makino

Shinya Mizone

Toshimasa Kuroda

Tadashi Hirakawa

Tadahiko Takata

Masatoshi Okazaki

Takeo Kimura

Hiroyuki Moriga

Akira Kimura

An adhesive-treated polyester fiber cord having a high adhesion to non-vulcanized rubber, a high resistance to separation of fibers or filaments from each other, and being useful as a reinforcing cord for producing a rubber composite material such as belt having high dimensional stability and power transmission property, is produced by first impregnating a material cord a first adhesive liquid containing a polyepoxide compound and a blocked polyisocyanate compound in solid weight ratio of 1/3-1/15, by heat treating it at 160-240&deg; C., by second treating the treated cord with a second adhesive liquid containing a resorcinol-formaldehyde resin and a rubber latex in a solid weight ratio of 1/3-1/15, by heat treating it at 180-240&deg; C., by third treating the treated cord with a third adhesive liquid containing a resorcinol formaldehyde resin (resorcinol/formaldehyde molar ratio: 1/0.6-1/1.0) and a rubber component (including natural rubber in a content of at least 15% by weight and optionally vinyl pyridine-styrene-butadiene copolymer rubber) in a weight ratio of 1/10-1/20 and by heat treating at 140-170&deg; C.

Process for producing an adhesive-treated polyester fiber cord

There is provided a speaker damper for use in an acoustic output device, which exhibits excellent shape retaining property at the time of molding, is highly safe to work environment and has excellent water resistance, heat resistance an durability. The speaker damper is obtained by impregnating cloth formed of mixed yarn of a wholly aromatic polyamide fiber and an aromatic polyester fiber with a polyester resin, and molding the cloth under heat and pressure.

Speaker damper

A surface-modified wholly aromatic polyamide fiber having an enhanced bonding property, surface tenacity and durability and a reduced friction, comprises a fiber matrix of a wholly aromatic polyamide material, fine particles of a cation-exchanging inorganic material distributed on and in a surface portion of the matrix and an additive comprising a cationic organic compound or a multi-functional organic silicone compounds, and attached to the fine organic particles.

Surface-modified wholly aromatic polyamide fiber and method of producing

A shaped polyester composite material having an excellent bonding property to rubber, comprises a shaped substrate comprising an aromatic linear polyester matrix and 0.3 to 15%, based on the weight of the matrix, of silicon dioxide fine particles having an average size of 5 to 100 millimicrons and dispersed in at least a surface portion of the substrate, and;

Shaped polyester composite material having activated surface thereof and

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Ibaraki, Japan

Hirosuke Watanabe