Abstract: A semiconductor drive device includes a drive circuit that drives a semiconductor switching element, a passive element connected to a gate of the semiconductor switching element to prevent a gate current of the semiconductor switching element, a switching element connected in series to the passive element, a control circuit that controls the switching element, and a temperature detection circuit that detects a temperature of the semiconductor switching element. The control circuit controls the switching element such that when the temperature detected by the temperature detection circuit is high, the gate current is prevented more than when the temperature is low.

Abstract: A cutter roll and an anvil roll, with which it is possible to control deformation in the axial direction, and a rotary cutter having the same. A roll 101, 210 for a rotary cutter includes: a barrel portion having a circumferential surface and a pair of end surfaces located respectively at opposite ends of the circumferential surface; a pair of first depressions 113, 213 having a ring shape or a cylindrical shape and located respectively at the pair of end surfaces of the barrel portion, the pair of first depressions each having a depth direction that is parallel to an axis of the barrel portion; a pair of first bearings 152, 252 located respectively in the pair of first depressions and being in contact with outer walls of the first depressions; and a pair of first bearing boxes 156 located on an outside of the pair of first depressions and having support portions 151b, 251b to be in contact with a support frame or a pressure mechanism, the pair of first bearing boxes supporting the respective bearings.

Abstract: A cutter roll and an anvil roll, with which it is possible to control deformation in the axial direction, and a rotary cutter having the same. A roll 101, 210 for a rotary cutter includes: a barrel portion having a circumferential surface and a pair of end surfaces located respectively at opposite ends of the circumferential surface; a pair of first depressions 113, 213 having a ring shape or a cylindrical shape and located respectively at the pair of end surfaces of the barrel portion, the pair of first depressions each having a depth direction that is parallel to an axis of the barrel portion; a pair of first bearings 152, 252 located respectively in the pair of first depressions and being in contact with outer walls of the first depressions; and a pair of first bearing boxes 156 located on an outside of the pair of first depressions and having support portions 151b, 251b to be in contact with a support frame or a pressure mechanism, the pair of first bearing boxes supporting the respective bearings.

Abstract: A cutter roll and an anvil roll, with which it is possible to control deformation in the axial direction, and a rotary cutter having the same. A roll 101, 210 for a rotary cutter includes: a barrel portion having a circumferential surface and a pair of end surfaces located respectively at opposite ends of the circumferential surface; a pair of first depressions 113, 213 having a ring shape or a cylindrical shape and located respectively at the pair of end surfaces of the barrel portion, the pair of first depressions each having a depth direction that is parallel to an axis of the barrel portion; a pair of first bearings 152, 252 located respectively in the pair of first depressions and being in contact with outer walls of the first depressions; and a pair of first bearing boxes 156 located on an outside of the pair of first depressions and having support portions 151b, 251b to be in contact with a support frame or a pressure mechanism, the pair of first bearing boxes supporting the respective bearings.

Abstract: An object of the present invention is to provide a multilayer film and a package body of which the thickness can be reduced than that of a conventional multilayer film, by having a good impact resistance, flex resistance, and anti-pinhole property. A multilayer film 100 according to the present invention includes a repeatedly laminated part 130. The repeatedly laminated part 130 is formed by alternately and repeatedly laminating a first layer 131 and a second layer 132. The first layer 131 consists mainly of a polyamide resin (excluding elastomers). The second layer 132 consists mainly of a copolymer of an olefin-based hydrocarbon having carbon number of 2 to 4 and a vinyl group-containing monomer.

Abstract: An object of the present invention is to provide a multilayer film and a package body of which the thickness can be reduced than that of a conventional multilayer film, by having a good impact resistance, flex resistance, and anti-pinhole property. A multilayer film 100 according to the present invention includes a repeatedly laminated part 130. The repeatedly laminated part 130 is formed by alternately and repeatedly laminating a first layer 131 and a second layer 132. The first layer 131 consists mainly of a polyamide resin (excluding elastomers). The second layer 132 consists mainly of a copolymer of an olefin-based hydrocarbon having carbon number of 2 to 4 and a vinyl group-containing monomer.