Nippon Asbestos Company, Ltd.

Nichias Corporation

Japan Exlan Company Limited

Japan Nuclear Ship Research and Development Agency

Susumu Aoki

Toshiaki Minaki

Kenichi Shibata

Shigeo Take

Kentaro Mori

Koji Tanaka

Junichi Miyakoshi

Kazuo Nishimoto

Tsutomu Yamamoto

Masaaki Ashizawa

Hiroshi Asaumi

Takashi Otouma

Kiyotaka Shimada

Shiro Takahata

Yasushi Tsuchimoto

Kenta Kabayama

Hiroshi Takemoto

Hirosi Asaumi

Masazumi Akase

A gasket sheet obtained by the milling and vulcanization of 50-85% by weight of a fibrous material, 10-50% by weight of a rubber material and at least 1-23% by weight of a water-insoluble and -swelling substance. The gasket sheet may be a one layer or a three layer sheet.

Gasket sheet

This invention relates to a disk roll characterized in that the flaky vermiculite particles obtained by pulverizing the expanded vermiculite, which may be optionally mixed with a fiber material, are dispersed in water and filtered to form a thin sheet as a starting material for disk roll.

Disc roll

A neutron protection thermal insulating material is obtained by adding a boron compound and, if necessary, a hydrous compound, to chrysotile asbestos fibers. To form the material, the asbestos is opened with the use of a surface active agent in the presence of water. The boron compound is added and air bubbles are incorporated into the mixture which is then dried, molded and compressed. The resulting product is characterized by a construction wherein the opened asbestos fibers are oriented in substantially parallel relation to each other and in the direction perpendicular to the compression direction and air pockets are flatly arranged between the fibers and substantially parallel thereto to reduce thermal conduction through the material in the direction parallel to the direction of compression.

Neutron-protection heat insulating material

This invention relates to a method for preparing glassy fibers having protuberances studded on the surface of the fiber, characterized in that each protuberance comprises an unmelted component of the starting materials and is formed on the surface of the fiber by fiberizing the partially unmelted starting materials by a spinner or blowing technique.

Method for preparing glassy fiber having protuberances studded on the

This invention pertains to a method of making inorganic vitreous fibers having small protrusions, such that the fiber produces a high strength reinforced molded product. The fibers are formed by introducing high melting constituents such as glass fiber, rock wool, ceramic fiber, silica particles, alumina particles, zirconia particles or mullite particles to molten inorganic material such that the constituents when flung from a ratary device are incorporated into the molten inorganic material.

Method for making vitreous fibers having small protrusions

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Yokohama, Japan

Susumu Aoki