Shin-etsu Polymer Co., Ltd.

Shin-etsu Polymer

Takashi Gonda

Atsushi Taniguchi

Toshiyuki Kawaguchi

Hironao Fujiki

Kazutoki Tahara

Kazuhiro Suzuki

Junya Ishida

Kenro Takizawa

Yuzo Morioka

Michimasa Ote

When extrusion of a molten resin by means of an extruder is started, a simple polyetherimide resin is melt extruded from a lip portionof a T-die, and a film of the simple polyetherimide resin is molded. The molding material is then switched to a resin composition including the polyetherimide resin and a fluorine resin and then a film of the resin composition is continuously extruded and molded from the T-die. Having been covered with a very thin filmof the simple polyetherimide resin, on a flow passage face of the lip portionof the T-die, a resin composition layerincluding a polyetherimide resin and a fluorine resin, which has affinity with the film, is then formed at a center part.

Method of manufacturing film for film capacitor and film for film capacitor

An electromagnetic noise suppressor of the present invention has magnetic resonance frequency of 8 GHz or higher, and the imaginary part of complex magnetic permeability at 8 GHz is higher than the imaginary part of complex magnetic permeability at 5 GHz. Such an electromagnetic noise suppressor is capable of achieving sufficient electromagnetic noise suppressing effect over the entire sub-microwave band. The electromagnetic noise suppressor can be manufactured by forming a composite layer on the surface of a binding agent through physical deposition of a magnetic material on the binding agent. The structure with an electromagnetic noise suppressing function of the present invention is a printed wiring board, a semiconductor integrated circuit or the like that is covered with the electromagnetic noise suppressor on at least a part of the surface of the structure.

Electromagnetic noise suppressor, structure with electromagnetic noise suppressing function, and method of manufacturing the same

An electromagnetic noise suppressor of the present invention includes a base material containing a binding agent and a composite layer formed by integrating the binding agent that is a part of the base material and the magnetic material. This electromagnetic noise suppressor has high electromagnetic noise suppressing effect in the sub-microwave band, and enables it to reduce the space requirement and weight. The electromagnetic noise suppressor can be manufactured by forming the composite layer on the surface of the base material by physical vapor deposition of the magnetic material onto the surface of the base material. The article with an electromagnetic noise suppressing function of the present invention is an electronic component, a printed wiring board, a semiconductor integrated circuit or other article of which at least a part of the surface is covered by the electromagnetic noise suppressor of the present invention.

Electromagnetic noise suppressor, article with electromagnetic noise suppressing function and their manufacturing methods

An electromagnetic noise suppressor of the present invention includes a base materialcontaining a binding agent and a composite layerformed by integrating the binding agent that is a part of the base materialand the magnetic material. This electromagnetic noise suppressor has high electromagnetic noise suppressing effect in the sub-microwave band, and enables it to reduce the space requirement and weight. The electromagnetic noise suppressor can be manufactured by forming the composite layeron the surface of the base materialby physical vapor deposition of the magnetic material onto the surface of the base material. The article with an electromagnetic noise suppressing function of the present invention is an electronic component, a printed wiring board, a semiconductor integrated circuit or other article of which at least a part of the surface is covered by the electromagnetic noise suppressor of the present invention.

Electromagnetic noise suppressor, article with electromagnetic noise suppressing function, and their manufacturing methods

An electromagnetic noise suppressor of the present invention has magnetic resonance frequency of 8 GHz or higher, and the imaginary part &#x3bc;&#x2033;of complex magnetic permeability at 8 GHz is higher than the imaginary part &#x3bc;&#x2033;of complex magnetic permeability at 5 GHz. Such an electromagnetic noise suppressor is capable of achieving sufficient electromagnetic noise suppressing effect over the entire sub-microwave band. The electromagnetic noise suppressor can be manufactured by forming a composite layeron the surface of a binding agentthrough physical deposition of a magnetic material on the binding agent. The structure with an electromagnetic noise suppressing function of the present invention is a printed wiring board, a semiconductor integrated circuit or the like that is covered with the electromagnetic noise suppressor on at least a part of the surface of the structure.

Growing community of inventors

Saitama, Japan

Takashi Gonda