Other

Laird Technologies Map Co., Ltd.

Chang Soo Kim

Kwang Choon Chung

Sang Pil Kim

Jeong Woo Lee

Myung Sun Gong

Ki Bong Suh

Moon Bok Lee

The present invention relates to a step hinge for a portable communication terminal, and more particularly to a step hinge mounted to a portable communication terminal, which can rotate at various angles thereto. A step hinge for a portable communication terminal according to the present invention, comprises: a housing; a rotating member mounted in the housing; a friction member mounted in the housing and contacting the rotating member; a belleville spring disposed in the housing so as to press the friction member and the rotating member for a tight contact therebetween.

Step hinge for portable communication terminals

Disclosed herein is a multi-step hinge. The hinge includes a housing. A rotary member is rotatably installed inside of the housing. The rotary member has a retainer groove formed in the outer circumferential face thereof. A stopper is slidably installed at either side of the rotary member inside of the housing. The stopper has a retainer protrusion formed so as to be engaged with the retainer groove. A resilient member is disposed between the housing and the stopper. A portable terminal having the multi-step hinge is also disclosed.

Multi-step hinge and portable terminal having same

A release agent and a release liquid which are used for the manufacture of labels, double-sided tapes, etc., are disclosed. The release agent and the release liquid provide improved adhesion between a substrate and a release layer, and excellent peel strength betwveen the release layer and an adherent. The release agent includes a dispersion of a vinyl-modified colloidal silica, a dispersion of a platinum chelate catalyst, and a polysiloxane water-dispersible silicone emulsion. The release liquid is obtained by dispersing the release agent in water so as to have a solid content of 2.5&tilde;30% by weight. The release film is produced by applying the release liquid on a substrate, followed by drying.

Silicone aqueous emulsion release liquid and release film using the same

A method for producing a release film which is used for the manufacture of adhesive labels, double-sided tapes, etc., is disclosed. The release film provides improved adhesion between a substrate and a release layer, and excellent peel strength between the release layer and an adherent. The method includes the steps of : obtaining a silicone aqueous emulsion release liquid by dispersing a silicone aqueous release agent including a dispersion of a vinyl-modified colloidal silica, a dispersion of a platinum chelate catalyst and a polysiloxane water-dispersible silicone emulsion, in water, so as to achieve a solid content of the release liquid of 2.5&tilde;30% by weight; and applying and drying the obtained release liquid on a substrate to form a release layer.

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Bucheon-si, South Korea

Chang Soo Kim