Toyoda Gosei Co., Ltd.

Toshikazu Funahashi

Shigeyuki Takahashi

Yasuhiko Ogisu

Masanobu Senda

Toshiyasu Ito

Mamoru Kato

Toshiya Uemura

Takaaki Mori

Jun Minoura

Ysauhiko Ogisu

A sealing apparatus, which provides a seal between a metal surface and a member sliding along the metal surface is made of rubber material which contains a rubber polymer having alkyl lateral chains. At least a part of alkyl group hydrogen of rubber polymer in cortex is substituted from fluorine by plasma treatment. The plasma treatment reduces the noise which is normally present in device as of this type.

Sealing apparatus

Contoured step sections and contoured grooves along the step sections are formed on a grille body. The grille body is subjected to chemical plating. Since the grooves have narrow bottoms, the bottoms remain unplated, so that a chemical plating layer is formed on the entire surface of the grille body except for the bottoms. The grille body having the chemical plating layer formed thereon is then subjected to an electroplating step having a plurality of steps. An undercoat plating layer is formed on the chemical plating layer formed on the portions where decorative plating is to be applied. The chemical plating layer formed on the portions where no decorative plating is to be applied is dissolved with a predetermined solution. Subsequently, a general electroplating layer is formed on the undercoat plating layer. Thus, the chemical plating layer and the electroplating layers are formed only on the to-be-plated portions. The plated portions are covered with an electroforming mask, and a coating is applied onto the exposed portions to form a coating layer, where the edges of the electroforming mask can be registered with the edges of the plating layer. Accordingly, the boundaries between the coating layer and the plating layer can clearly be defined.

Resin products and process for producing the same

Annular grooves having substantially V-shaped cross sections are formed on the front surface and the rear surface of a grille body. A through hole communicating to the front surface and the rear surface of the grille body is also formed so that the front aperture may be smaller than the rear aperture. A protrusion is formed on the rear surface of the grille body, which is located inner than the groove. The grille body is immersed into a chemical plating solution to form a chemical plating layer on the entire surface of the grille body except for the bottoms of the grooves. The grille body is then subjected to undercoat plating, in which the grille body is immersed into a predetermined plating solution utilizing the protrusion as a kind of electrode so as to electrically charge the chemical plating layer present on the front surface from the layer present on the protrusion and through the layer present in the through hole to allow an undercoat plating layer to be formed on the portions where decorative plating is formed. The chemical plating layer formed on the portions where no decorative plating is formed is dissolved by a predetermined solution. A general electroplating layer is formed likewise on the undercoat plating layer. The chemical plating layer and the electroplating layer are formed only on the to-be-plated portions. The protrusion does not impair the front appearance of the front grille.

Partially plated resin products and partial plating process therefor

Method and apparatus for improving the surface quality of a resin molding by treating it with a plasma gas, measuring and integrating ion density and stopping the treatment when the integration reaches a predetermined value.

Plasma treatment method

The present invention relates to a planar electrochromic dimmer used in dimming devices such as car sun roofs, and others having a structure comprising; a pair of bases, each comprising a transparent electrode film provided on each of a pair of bases, and arranged such that both transparent electrode films are facing each other, an electrolyte provided between the two electrode-equipped bases, a color-forming layer provided on at least one of the electrode-equipped bases, and a thin film with a visible ray transmittivity of 20-60% provided on at least one of the bases or the transaprent electrode films.

Growing community of inventors

Aichi, Japan

Toshikazu Funahashi