Sumitomo Rubber Industries Limited

Other

Sanko Chemical Industry Co., Ltd.

Hiromasa Okubo

Seiji Tomono

Takamichi Sagawa

Toshikazu Ogita

Toshikazu Kinoshita

Takayuki Hattori

Toshiaki Sakaki

Kenichi Uesaka

Yoshiharu Tatsukami

Tetsuo Mizoguchi

Katsumi Terakawa

Noriaki Fujihana

Makoto Sakuraoka

Tetsuo Sri Research And Development Ltd Mizoguchi

Toshiaki Sri Research And Development Ltd Sakaki

Noriaki Sanko Chemical Industry Co Ltd Fujihana

Yoshiharu Sanko Chemical Ind Co Ltd Tatsukami

Kenichi Sri Research And Development Ltd Uesaka

Katsumi Sri Research And Development Ltd Terakawa

Takayuki Sri Research And Development Ltd Hattori

The present invention provides a polymeric-type antistatic agent containing a polymer composition consisting of a polymeric-type antistatic agent containing a resin or/and an elastomer as a main component thereof; or/and a thermoplastic resin having a polar group or/and an elastomer having the polar group. At least one kind of an anion-containing salt, having a fluoro group and a sulfonyl group, is added to the polymer composition without intermediary of a medium consisting of a low-molecular-weight polyether-containing compound or a low-molecular-weight polar compound whose number-average molecular weight is not more than 5000. The present invention also provides a composition, for a conductive roller or the like, containing polymer components and the polymeric-type antistatic agent dispersed in the polymer components.

Polymeric-type electric resistance control agent and polymer composition containing the same

The present invention provides a cylindrical printing blanket comprising a seamless sleeve and a sheet-like blanket having a fabric layer, a compressive layer and a surface printing layer, said sheet-like blanket being bonded onto the outer surface of said seamless sleeve. The blanket is made by cutting a long sheet-like blanket that has the fabric layer, the compressive layer and the surface printing layer and is bonded to the outer surface of the seamless sleeve, thus the operation can be done with good workability.

Printing blanket

A printing blanket according to the present invention is substantially composed of a base fabric and a surface printing layer, and a part or the whole of the base fabric is composed of hollow fibers. The printing blanket is superior in productivity because it has a simpler structure than that of an air-type printing blanket, and has excellent compression properties similar to those of the air-type printing blanket.

The present invention provides a printing blanket which includes a first compressive layer which is porous and seamless, a non-expansion layer formed by spirally winding a wire in a circumferential direction of the blanket so that a distance between adjacent wires is not more than 0.5 mm, a second compressive layer which is porous and seamless, a surface printing layer which is seamless and non-compressive, and a cylindrical sleeve to be fit over a blanket cylinder, wherein these layers are laminated in this order on the outer peripheral surface of this cylindrical sleeve directly or through a seamless adhesive layer. According to this printing blanket, piling caused at the time of high-speed printing is inhibited and printing can be performed in high productivity.

A printing blanket according to the present invention is provided with a non-stretchable layer formed by arranging hollow yarn in a predetermined direction inside a surface printing layer constituting an elastomer. The printing blanket is and formed in a seamless cylindrical shape in the circumferential direction, is superior in productivity because it has a simpler structure than that of an air-type printing blanket, and has excellent compression properties similar to those of the air-type printing blanket.

A printing blanket in which an open cell compressible layer and a closed cell compressible layer are provided inside a surface printing layer, which has such superior characteristics that it has the advantages of both the compressible layers and does not cause a variety of problems which are caused by the disadvantages of both the compressible layers.

A printing blanket according to the present invention is formed by laminating a non-stretchable layer obtained by winding a thread in helical fashion in the circumferential direction, a compressible layer comprising an elastomer and in a porous and a seamless cylindrical shape, and a surface printing layer similarly comprising an elastomer and in a seamless cylindrical shape in this order, whereby high-quality prints can be obtained in a wide range, and the degree of the degradation of printing properties due to the reduction in reaction force is low.

Helical thread printing blanket

There is provided a printing blanket having no seam in the circumferential direction thereof, which realizes high quality of printings in a wide range from normal printing to high, speed printing, and which has high strength to facilitate the handling and prolonged life, thus enabling the reuse of the sleeve and the like. Specifically, on the peripheral surface of the cylindrical sleeve 21, the base layer 1, the compressible layer 2, the non-stretchable layer 3 and the surface printing layer 4 are laminated by interposing the adhesive layers 31, 32, 33 and 34, respectively. All of the above layers comprise a seamless elastomer. The non-stretchable layer 3 is prepared by winding a wire rod in helical fashion.

Growing community of inventors

Kobe, Japan

Hiromasa Okubo