Denki Kagaku Kogyo Kabushiki Kaisha

Mikio Shimizu

Takeshi Miyakawa

Masanori Higano

Kazuhiro Kosugi

Masanori Ishii

Masami Inoue

Hisatsugu Tokunaga

Takeshi Nabeta

Yoshihisa Moriya

Tetsuo Fujimura

Minoru Oda

Atsushi Takei

Katsuhisa Ogita

Masafumi Hiura

Yuichi Kadoya

Tadaaki Hirooka

Takashi Tomizawa

Satoshi Yokoyama

The present invention provides a new antistatic method and its application to members. The present invention is an antistatic method featured to mount multiple resin based composites with different triboelectric series order on the surface and members featured to have multiple resin based composites with different triboelectric series order on the surface. The members are resin based sheets, resin based films or resin molded materials. The resin based composites are adhesives, bonding agents, printing ink or paint.

Static electricity preventing method and member using the method

A carrier tape body having an embossed tape continuously having pockets which contain an electronic component sealed with a cover tape, where the cover tape has a peeling static electrification amount of from &#x2212;9 to +9 nC when the cover tape has a surface resistivity of at least 10&#x3a9;, and where the cover tape has a peeling static electrification amount of from &#x2212;3 to +3 nC when the cover tape has a surface resistivity of less than 10&#x3a9;.

Electronic component container

A heat-sealing film having a haze of not more than 30% and having a sealant layer made of a resin composition which comprises from 50 to 100 wt % of the total of the following components (a) to (c):

Transparent heat-sealing film

In order to prevent static electricity impairment of an electronic component, a layer at the surface of a container to be in contact with an electronic component is one having a relatively high surface resistivity, a layer having a higher electrical conductivity than that is laminated below it, and the surface resistivity of the layer at the surface is higher than that of the layer below it. It is considered that in an electronic component packaging container having such a constitution, static electricity electrified on an electronic component is gradually discharged from the electronic component to the surface of the electronic component packaging container without sudden discharge, thus preventing the static electricity impairment. The surface layer preferably comprises a material close to the electronic component in the series of frictional electrification.

Sheet and electronic component packaging container

A surface protection film which comprises a substrate layer and an adhesive layer, and of which the electrostatic charge by peeling from an adherend is from +0.01 to &#x2212;0.01 nC/mm.

Surface protection film

An electronic component packaging container which comprises a multilayer polyester sheet having a base layer comprising a polyethylene terephthalate type resin and a polycarbonate type resin and a surface layer comprising a polycarbonate type resin, formed on at least one side of the base layer, wherein the base layer contains from 70 to 97 wt % of the polyethylene terephthalate type resin and from 3 to 30 wt % of the polycarbonate type resin based on the total amount of the polyethylene terephthalate type resin and the polycarbonate type resin, and the thickness of the surface layer is from 10 to 30% of the total thickness.

Packaging container for electronic part

An electroconductive sheet comprising a substrate layer of a thermoplastic resin comprising an acrylonitrile-butadiene-styrene copolymer type resin and/or a polystyrene type resin and having laminated on at least one side of the substrate layer, a surface layer of an electroconductive resin composition comprising a polycarbonate type resin and from 5 to 50 wt % of carbon black.

Resin composition, molded product thereof and electroconductive sheet

A heat-stealing film having a baze of not more than 30% and having a sealant layer made of a resin composition which comprises from 50 to 100 wt % of the total of the following components (a) to (c); (a) from 5 to 50 wt % of a block copolymer of from 50 to 95 wt % of a styrene-type hydrocarbon and from 5 to 50 wt % of a conjugated diene-type hydrocarbon, (b) from 5 to 50 wt % of an ethylene/&#x3b1;-olefin random copolymer, and (c) from 5 to 70 wt % of a block copolymer of from 10 to 50 wt % of a styrene-type hydrocarbon and from 50 to 90 wt % of a conjugated diene-type hydrocarbon, and (d) from 0 to 50 wt % of and impact-resistant polystyrene.

An electroconductive resin composition comprising (A) at least one thermoplastic resin selected from the group consisting of a polyphenylene ether type resin, a polystyrene type resin and an ABS type resin, (B) carbon black, and (C) an olefin type resin, said electroconductive resin composition containing from 5 to 50 parts by weight of (B) the carbon black per 100 parts by weight of (A) the thermoplastic resin, and from 1 to 30 parts by weight of (C) the olefin type resin per 100 parts by weight of the total amount of (A) the thermoplastic resin and (B) the carbon black, and said electroconductive resin composition having a surface resistivity of from 10.sup.2 to 10.sup.10 .OMEGA..

Electroconductive resin composition, sheet, molded product and container

An electroconductive composite plastic sheet comprising a substrate sheet made of at least one thermoplastic resin selected from the group consisting of a polyphenylene ether type resin, a polystyrene type resin and an ABS type resin and having laminated on each side of the substrate sheet, an electroconductive resin composition comprising (A) at least one thermoplastic resin selected from the group consisting of a polyphenylene ether type resin, a polystyrene type resin and an ABS type resin, (B) carbon black, and (C) an olefin type resin or (C1) a resin obtained by hydrogenation of a styrene/diene block copolymer, said electroconductive resin composition containing from 5 to 50 parts by weight of (B) the carbon black per 100 parts by weight of (A) the thermoplastic resin, and from 1 to 30 parts by weight of (C) the olefin type resin or (C1) the resin obtained by hydrogenation of a styrene/diene block copolymer, per 100 parts by weight of the total amount of (A) the thermoplastic resin and (B) the carbon black, and the sheet having the electroconductive resin composition laminated on each side thereof having a surface resistivity of from 10.sup.2 to 10.sup.10 .OMEGA..

Conductive composite plastic sheet and container

A heat resistant electrically conductive plastic sheet comprising (1) a base material layer A made of a base material resin composition comprising from 32 to 94 wt % of a polyphenylene ether resin (hereinafter referred to simply as PPE), from 4 to 61 wt % of a high-impact polystyrene resin (hereinafter referred to simply as HI) and from 2 to 17 wt % of a polyolefin resin and (2) an electrically conductive layer B made of an electrically conductive resin composition comprising from 10 to 85 wt % of PPE, from 8 to 82 wt % of HI and from 3 to 33 wt % of an electrical conductivity-imparting material, integrally laminated on one side or both sides of the base material layer A by coextrusion.

Growing community of inventors

Isezaki, Japan

Mikio Shimizu