Nihon Cement Co., Ltd.

Fuji Kasei Kogyo Kabushiki Kaisha

Fuji Kasei Kogyo Co., Ltd.

Kanesuke Kasahara

Michio Ootani

Noboru Nishimoto

Kazushige Suzuki

Yuukou Ishikawa

Tooru Tanibe

Kohei Takanishi

Shunsai Nagai

The present invention relates to a heat-insulating panel formed of curly contracted pieces of tapes, for example thermally contracted pieces of magnetic tapes, and a method of manufacturing such a panel. In particular, the present invention concerns a heat-insulating panel which also serves as a concrete form. The heat-insulating panel has excellent strength characteristics such, as bending strength and bending rigidity, and dimensional stability, as well as characteristics of sound absorption, heat-insulation, electrostatic shielding and electromagnetic wave absorption, and is usable for a concrete form when placing concrete during the construction of a building formed of reinforced concrete or steelframe reinforced concrete. The present invention relates also to a method of manufacturing the panel.

Heat-insulating panel serving as concrete form and method of

Method of treating waste magnetic tapes and method of manufacturing

A heat-insulating panel serving also as a concrete frame excellent in bending strength characteristics and dimensional stability and a method of manufacturing the panel. Cut or shredded pieces having lengths of 20 mm or less of magnetic tapes are heated to 100.degree. to 200.degree. C., thus forming contracted pieces of magnetic tapes in curled shapes. The curled contracted pieces of magnetic tapes in an amount of 100 parts by weight are mixed with 10 to 50 parts by weight of a thermosetting resin as a binder, and are compression-molded under a pressure ranging from 2 to 20 kgf/cm.sup.2 at a temperature from 100.degree. to 200.degree. C.

Heat-insulating panel serving as concrete form

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Atsugi, Japan

Kanesuke Kasahara