Dai Nippon Printing Co., Ltd.

Dai Nippon Printingco., Ltd.

Kazuhito Fujii

Isao Inoue

Masahisa Yamaguchi

Yasuki Suzuura

Takaki Miyachi

Hideki Imamura

Masumi Hyakutome

Kojiro Okawa

Hiroko Takamori

Fumihiro Arakawa

Yukihiro Kyoden

An electromagnetic wave shielding materialcomprises a light-shielding electrical conductor layerhaving, on its observer-side external surface, a blackening layer. The electrical conductor layercomprises a mesh portionthat has a large number of openings adjoining one another and faces the center portionof the image-luminescent partof a display device, and a frame portionthat surrounds the mesh portionand faces the outer edge portionof the image-luminescent partof the display device. When trimming the screen of a display D with a black-colored light-shielding layer, since the electromagnetic wave shielding materialis used, it is not necessary to performan additional printing step or the like, so that the total number of steps and material cost are not increased. Moreover, such electromagnetic wave shielding material does not cause non-uniformity in light-shielding properties compared with a light-shielding layer formed by printing. The frame portionincludes a light-transmitting pattern parthaving patterned openings

Electromagnetic wave shielding material and display using the same

The present invention has a main object to provide a transparent conductive heat sealing material of which antistatic property does not deteriorates even at a low humidity, and has a transparency to an extent of permitting visual recognition of the contents and a carrier tape lid using the same. To achieve this object, the transparent conductive heat sealing material of the invention is characterized by a heat-sealable synthetic resin, and conductive fine particle having a 50% particle size of up to 1.0 &#x3bc;m.

Transparent conductive heat sealing material and carrier tape lid using same

The present invention has a main object to provide a transparent conductive heat sealing material of which antistatic property does not deteriorates even at a low humidity, and has a transparency to an extent of permitting visual recognition of the contents and a carrier tape lid using the same. To achieve this object, the transparent conductive heat sealing material of the invention is characterized by a heat-sealable synthetic resin, and conductive fine particle having a 50% particle size of up to 1.0 &mgr;m.

Transparent conductive heat sealing material and carrier tape lid using the same

Provided are an abrasive tape suitable for finishing of surfaces or the like of precision components such as optical connector ferrules and semiconductor wafers, and a process for producing it. A coating agent in which abrasive particles having an average particle size in the range of 1 to 200 m&mgr; are dispersed in a binder resin solution. The coating agent is applied, with intervention of a primer layer if necessary, onto a base for abrasive tape to form an abrasive layer, thus obtaining an abrasive tape.

Abrasive tape, process for producing it, and coating agent for abrasive tape

Provided are an abrasive tape suitable for finishing of surfaces or the like of precision components such as optical connector ferrules and semiconductor wafers, and a process for producing it. A coating agent in which abrasive particles having an average particle size in the range of 1 to 200 m.mu. are dispersed in a binder resin solution. The coating agent is applied, with intervention of a primer layer if necessary, onto a base for abrasive tape to form an abrasive layer, thus obtaining an abrasive tape.

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Tokyo-to, Japan

Kazuhito Fujii