Toyo Seikan Kaisha, Ltd.

Nec Corporation

Yoshiaki Otsuka

Hideaki Masuo

Hiroshi Hasegawa

Yotaro Tsutsumi

Shoji Ito

A diversity reception system used for a mobile radio communication system of a sector type is constructed using single-directivity transmitting-receiving antennas and a non-directivity receiving antenna, all of which are fixed to a support pole such as a steel pipe pole and a steel tower. The single-directivity transmitting-receiving antennas are fixed to a peripheral surface of the support pole and are arranged in directions corresponding to sectors respectively. The non-directivity receiving antenna is fixed to a head portion of the support pole and is arranged above the single-directivity transmitting-receiving antennas by a prescribed interval of distance, which corresponds to at least nine wavelengths of radio waves. The single-directivity transmitting-receiving antennas are connected to transceivers, each containing a diversity receiver, respectively. A receiving power amplifier that amplifies receiving power input to the non-directivity receiving antenna is fixed to the support pole and is located just below the antennas and is provided to compensate a low gain of the non-directivity receiving antenna. A distributor is provided for distributing an output of the receiving power amplifier to the transceivers respectively. Thus, diversity reception is performed using any one of the single-directivity transmitting-receiving antennas and the non-directivity receiving antenna.

Diversity reception system

A multilayer laminated film pouch disclosed has an easy opening characteristics. The layers of the film is composed of an innermost film containing linear low density polyethylene, an intermediate film made of oriented polyolefin, an outermost film made of biaxially oriented nylon and/or PET.

Easy opening pouch

A laminated film bag is made of laminated films each composed of an outermost layer formed of a polyester resin film, an innermost layer formed of a polyolefin resin film and an intermediate layer formed of an aluminum foil, the polyolefin resin film has formed thereon score lines having a depth of 1/20 to 2/3 of the thickness of the polyolefin resin film and an opening width of 0.5 to 7 mm, at intervals of 1 to 15 mm.

Laminated film bag for packaging food

Disclosed is a retort-sterilizable laminated pouch having an excellent loading pressure resistance, which comprises two laminated sheets, each comprising a flexible gas-barrier substrate and a heat-sealable crystalline olefin resin layer formed on one surface of said substrate, said laminated sheets being piled in the form of a pouch where the olefin resin layers confront each other and the periphery of the pouch of the piled sheets being heat-sealed, wherein the crystalline olefin resin layer is composed of polyethylene having a flow ratio (Kp), defined by the following formula, of at least 165: ##EQU1## wherein MI.sub.2 stands for the melt index (g/10 min) as determined according to the condition E of ASTM D-1238 and MI.sub.20 stands for the melt index (g/10 min) as determined according to the condition E of ASTM D-1238 except that the load is changed to 20.0 Kg and the sample collecting time is changed to 30 seconds, and a density of at least 0.935 g/cc. It is preferred that the crystalline olefin resin layer be composed of a blend comprising a major amount of polyethylene having a flow ratio (Kp) of at least 165 and a minor amount of polyethylene having a flow ratio (Kp) not higher than 154.

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Tokyo, Japan

Yoshiaki Otsuka