Shin-Kobe Electric Machinery Co., Ltd.

Other

Teijin Limited

Oji Paper Co., Ltd.

Masayuki Noda

Masaru Ogata

Hirokazu Hiraoka

Masayuki Ushida

Yoshihisa Kato

Hiroyoshi Ueno

Katsuji Takahashi

Hiroyuki Yamanaka

Tomoyuki Terao

Takahiro Yamaguchi

Toru Shimadu

Kenichi Kariya

Masaaki Yoshida

Masayuki Arioka

Masaru Tachiiri

Ken-ichi Kariya

Shigeru Kurumatani

Minoru Yonekura

Setsuo Toyoshima

Minoru Ootuka

Akira Nagai

Mamoru Murata

Takekazu Adachi

Isao Ichioka

Akihiro Hachiya

Manabu Ochida

Yukihiro Yamashita

Yutaka Yamaguchi

A polished-piece holder is provided that does not easily stick or adsorb to a polishing pad of a polishing apparatus and reduces occurrences of production line troubles and therefore the number of failed polished pieces. A single sheet of a thermosetting resin impregnated fiber substrate or a laminated sheet formed by laminating a plurality of sheets of the thermosetting resin impregnated fiber substrate is formed under heat and pressure into a plate. The thermosetting resin impregnated fiber plate is then processed to form a polished-piece holder for holding pieces to be polished. The evaluation portion has a certain length in a direction of the average line. The thermosetting resin impregnated fiber plate has a surface roughness with a maximum wave height Ry of 10 &mgr;m or greater over an almost entire area of the surface layer. The maximum wave height Ry is determined in an evaluation portion of a wave curve by summing a height Rp of a highest crest and a depth Rv of a deepest trough from an average line of the wave curve. The wave curve is taken from a cross-sectional curve obtained by the surface roughness measuring device.

Polished-piece holder and manufacturing method thereof

A non-woven fabric comprising a principal component of para-aramid fiber chops bonded with each other by a binder, the para-aramid fiber chops having a mixture of (a) poly-p-phenylene-3,4&prime;-diphenylether-terephthalamide fibers and (b) poly-p-phenylene-terephthalamide fibers and having a blend ratio by weight of (a)/(b)&equals;10/90&tilde;90/10 and preferably (a)/(b)&equals;30/70&tilde;70/30.

Electrically insulating non-woven fabric, a prepreg and a laminate

The present invention is to provide a base material for a laminate having a high strength, reduced thickness, and light weight. In the present invention, a base material is prepared by incorporating a thermosetting resin binder into a non-woven fabric of para-aramid fibers prepared by a wet type paper making, and then heating a plurality of the resultant non-woven fabric sheets under pressure. The non-woven fabric sheet comprises 95 to 70 mass % of the para-aramid fibers and 5 to 30 mass % of the thermosetting resin binder.

Base material for laminate and process for producing the same

A resin compound, which causes very little thermal stress even when a flip chip is mounted, has a low modulus of elasticity, and a heat resistance which is sufficiently high for solder floating at 300&deg; C., and the resin compound also can be used in an adhesive film, a metal-clad adhesive film, a circuit board, and an assembly structure. The resin compound contains (A) a polyamide imide with siloxane bond, (B) a acrylic polymer with a weight-average molecular weight of 500,000 or more, (C) a thermoset resin, and (D) a solvent.

Resin compound, and adhesive film, metal-clad adhesive film, circuit board, and assembly structure, using the resin compound

Glass fiber non-woven fabric for base material of laminate comprising binder binding glass fibers to each other and having glass transition temperature of higher than 120.degree. C.

Laminate, glass fiber non-woven fabric therefor and a method of

A laminate base material of aromatic polyamide fiber non-woven fabric which comprises a combined non-woven fabric of para-aramid fibers and meta-aramid fibers bonded with each other by a resin binder such as an epoxy resin binder and meta-aramid fibers being thermally adhered to each other and meta-aramid fibers being thermally adhered to para-aramid fibers while they are passing through a pair of thermal rolls and heated and pressed by them and the meta-aramid fibers being included preferably by 5 through 30 weight %.

Laminate base material, a method of producing the same, a prepreg and a

A laminate base material of aromatic polyamide fiber non-woven fabric which comprises a combined non-woven fabric of para-aramid fibers and meta-aramid fibers bonded with each other by a resin binder such as an epoxy resin binder and meta-aramid fibres being thermally adhered to each other and meta-aramid fibers being thermally adhered to para-aramid fibers while they are passing through a pair of thermal rolls and heated and pressed by them and the meta-aramid fibers being included preferably by 5 through 30 weight %.

A liquid crystal display device comprising a multilayer printed wiring board having an insulation layer of glass fiber woven fabric impregnated with a resin and having a coefficient of thermal expansion of 15 ppm/.degree.C. or less, which is provided by a glass yarn of which the glass fiber woven fabric is formed having a coefficient of thermal expansion of 4 ppm/.degree.C. or less and a modulus of elasticity of 7000 kg/mm.sup.2 or more or alternatively provided by the resin with which the glass fiber woven fabric is impregnated having a modulus of elasticity of 200 kg/mm.sup.2 or less and the glass yarn having a coefficient of thermal expansion of 6 ppm/.degree.C. or less and a modulus of elasticity of 7000 Kg/mm.sup.2 or more.

Liquid crystal display device

Glass fiber for non-woven fabric base material of a laminate having a surface treated by sizing agent essentially comprising silane coupling agent and dispersing agent, and said silane coupling agent including epoxy-silane and styryl amino-silane.

Glass fiber for non-woven fabric and a method of producing a laminate

Glass fiber non-woven fabric for base material of a laminate comprising binder binding glass fibers to each other, said binder including a reactant product formed by reacting a solution of tri-functional epoxy resin, bi-functional epoxy resin and tri-ethylene tetramine and having an acetic solution and phenyl amino-silane coupling agent added thereto. The thus obtained glass fiber non-woven fabric is impregnated with an predetermined amount of epoxy resin and dried to produce prepregs, which are superposed one upon another and formed under heat and pressure of 20 kgf/cm.sup.2 to produce the laminate.

Glass fiber non-woven fabric, a method of producing glass fiber

A laminate comprising glass fiber woven fabrics impregnated with thermo-setting resin and superposed one on another while heated and pressed and said glass fiber woven fabrics having warps and wefts which are of components different from each other and of coefficients of thermal expansion different from each other.

Growing community of inventors

Hikone, Japan

Masayuki Noda