Mitsui Minings & Melting Co., Ltd.

Akitoshi Takanashi

Hiroto Iida

Makoto Hosokawa

Yoshinori Shimizu

Misato Mizoguchi

Shinichi Obata

Makoto Dobashi

Junshi Yoshioka

Akiko Sugimoto

Kenichiro Iwakiri

There is provided a method for manufacturing a printed wiring board that effectively suppresses pattern failure and is also excellent in fine circuit forming properties. This method includes: providing an insulating substrate including a roughened surface; performing electroless plating on the roughened surface of the insulating substrate to form an electroless plating layer less than 1.0 μm thick having a surface having an arithmetic mean waviness Wa of 0.10 μm or more and 0.25 μm or less and a valley portion void volume Vvv of 0.010 μm/μmor more and 0.028 μm/μmor less; laminating a photoresist on the surface of the electroless plating layer; performing exposure and development to form a resist pattern; applying electroplating to the electroless plating layer; stripping the resist pattern; and etching away an unnecessary portion of the electroless plating layer to form a wiring pattern.

Method of manufacturing printed wiring board

There is provided a method for manufacturing a printed wiring board that effectively suppresses pattern failure and is also excellent in fine circuit forming properties. This method includes: providing an insulating substrate including a roughened surface; performing electroless plating on the roughened surface of the insulating substrate to form an electroless plating layer less than 1.0 μm thick having a surface having an arithmetic mean waviness Wa of 0.10 μm or more and 0.25 μm or less as measured in accordance with JIS B0601-2001 and a kurtosis Sku of 2.0 or more and 3.5 or less as measured in accordance with ISO 25178; laminating a photoresist on the surface of the electroless plating layer; performing exposure and development to form a resist pattern; applying electroplating to the electroless plating layer; stripping the resist pattern; and etching away an unnecessary portion of the electroless plating layer to form a wiring pattern.

Method for manufacturing printed wiring board

The object is to provide a method of manufacturing electrodeposited copper foil with a carrier foil for high-temperature heat-resistance in which the peeling of the carrier foil is easy even by press working at temperatures of not less than 200&#xb0;C. For this purpose are adopted 'a method of manufacturing electrodeposited copper foil with a carrier foil for high-temperature heat-resistance in which an organic adhesive interface layer is formed on a surface of carrier foil by use of an organic agent, and an electrodeposited copper foil layer is formed on the organic adhesive interface layer, characterized in that the formation of the organic adhesive interface layer on the surface of the carrier foil is performed by acid pickling the surface of the carrier foil by use of an acid pickling solution containing 50 ppm to 2000 ppm of organic agent used in the formation of the adhesive interface layer and by simultaneously causing the organic agent to be adsorbed whereby an acid pickled and adsorbed organic film is formed' and others.

Method of manufacturing electrodeposited copper foil with carrier foil for high-temperature heat-resistance and electrodeposited copper foil with carrier foil for high-temperature heat-resistance obtained by the manufacturing method

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Ageo, Japan

Akitoshi Takanashi