Mitsubishi Paper Mills Limited

Diesel Kiki Co., Ltd.

Fuji Koki Manufacturing Co., Ltd.

Nippon Aroma Co., Ltd.

Nitto Boske, Ltd.

Takashi Koike

Masahiro Amano

Shunji Seino

Hiroshi Nomura

Takeo Iijima

Osamu Yamamoto

Ryota Nishiyama

Juetsu Kurosawa

Eisuke Yamaya

A variable capacity wobble plate compressor in which pressure in a crankcase accomodating a wobble plate is controlled by a pressure-control valve disposed across a communication passage connecting the crankcase and a suction chamber, whereby the delivery quantity or capacity is varied with a change in the inclination angle of the wobble plate depending on the pressure in the crankcase. The pressure-control valve comprises bellows variable in length with a change in the magnituted of suction pressure, a valve body attached to one end of the bellows, a first movable member attached to the other end of the bellows, a first spring urging the valve body in the closing direction, a second movable member which is brought into or out of urging contact with the first movable member in response to at least a change in the discharge pressure, and a second spring interposed between the second movable member and a spring seat. When the discharge pressure is higher than a predetermined value, the second movable member is biased away from the first movable member by the discharge pressure against at least the force of the second spring. When the discharge pressure is lower than the predetermined value, the second movable member is urged against the first movable member by at least the force of the second spring against the discharge pressure to urge the valve body in the closing direction via the first movable member, the first spring and the bellows.

Variable capacity wobble plate compressor

A rock wool composite material obtained by mixing a fine rock wool having a diameter of 1 to 10.mu. and a length of 70 to 500.mu. and containing substantially no shots with a pulp-like substance of a heat-resistant aromatic polymer having a freeness value of 150 seconds or more and less than 500 seconds, is excellent in heat resistance, incombustibility, heat insulation and electrical insulation and is advantageously used as a substitute for an asbestos sheet or board.

Rock wool composite material

A laminated composite comprising a web of heat-resistant base material having a sufficient structural strength and a web of tiny mica flakes laid on said web of base material by multilayer-paper making. This composite can be manufactured with good operational efficiency, is improved in mica retention and is excellent in varnish-impregnability, heat-resistance, mechanical strengths and electric insulation.

Electric insulating sheet

A fibrous sheet having a high strength and water resistance and having no resin specks on the surface can be produced by producing a sheet from a fiber slury by the known paper making process, to said fiber slurry being added a flocculate of chlorinated polymer latices which has a particle size of 100.mu.-500 .mu. and is prepared by heating said chlorinated polymer latices to a temperature of at least their minimum film-forming temperature and then adding a water soluble cationic polymer or a polyvalent metal salt with stirring. Examples of said chlorinated polymer latices are anionic polyvinyl chloride latex, polyvinylidene chloride latex or the combination thereof.

Method for producing fibrous sheet

A transparent cellulosic paper is produced by coating or impregnating a cellulosic paper with an organic solvent solution containing a compound having a weight-average molecular weight of 200 to 2,000 and having at least two isocyanate groups in a molecule or with an organic solvent solution containing, in addition to said compound, at least one compound selected from the group consisting of an aliphatic monohydric alcohol having 6 to 18 carbon atoms and a nonionic surface active agent to the polyethylene glycol type having one hydroxyl group in a molecule, the ratio OH/NCO in the solution being less than 1; removing said organic solvent; and allowing the coated or impregnated paper to harden by aging.

Transparent cellulosic paper and method for making the same

A fibrous sheet bonded with a latex flocculate is produced by adding zinc white powders to a carboxyl modified anionic latex, adjusting the pH to at least 7, adding thereto a water soluble cationic polymer to obtain a latex flocculate, adding thus obtained flocculate to a fiber slurry and subjecting the fiber slurry to a known wet paper making process.

Growing community of inventors

Tokyo, Japan

Takashi Koike