Abstract: The present embodiment is a tank having a liner and a first protective layer disposed on an outer peripheral surface of the liner and configured such that a resin-impregnated fiber bundle including a reinforcing fiber bundle and a first matrix resin is wound around the liner, wherein the resin-impregnated fiber bundle has a folded portion fixed in a bent state at a winding end portion of the resin-impregnated. fiber bundle.

Abstract: The present embodiment is a method of recycling reinforcing fibers, the method comprising: providing a tank having at least a first protective layer disposed on an outer peripheral surface of a liner and a liner, the first protective layer being configured such that a resin-impregnated fiber bundle including a reinforcing fiber bundle and a first matrix resin is wound around the liner; and a second protective layer formed of the first matrix resin on the first protective layer; removing a portion of the second protective layer to expose a winding end portion of the resin-impregnated fiber bundle; peeling the exposed winding end portion; and pulling the peeled winding end portion to draw out the resin-impregnated fiber bundle.

Abstract: Provided is a method for manufacturing a ribbon piece that allows suppressing a damage of a rotary die cutter. A method for manufacturing a ribbon piece of the present disclosure includes punching out a ribbon piece from a ribbon material using a rotary die cutter. The rotary die cutter includes a die roll and an anvil roll. The die roll includes a die roll body, and a cutting blade is formed to protrude on an outer peripheral surface of the die roll body. The anvil roll includes an anvil roll body, a groove is provided on an outer peripheral surface of the anvil roll body, and the cutting blade is engageable with the groove with a space.

Abstract: A method of transporting a plurality of sheet-like members containing a magnetic material includes a first step of placing one of the members on an endless belt, and a second step of releasing the member from a portion of the endless belt which is moved and folded back along a roller. The endless belt includes a first magnetic force generating portion that generates first magnetic force, and a second magnetic force generating portion that generates second magnetic force that is stronger than the first magnetic force. In the first step, the member is placed on the belt, such that a first portion of the member containing the magnetic material is located in the first magnetic force generating portion, and a second portion of the member containing the magnetic material and located rearward of the first portion in a conveying direction is located in the second magnetic force generating portion.

Abstract: A method of transporting a plurality of sheet-like members containing a magnetic material includes a first step of placing one of the members on an endless belt, and a second step of releasing the member from a portion of the endless belt which is moved and folded back along a roller. The endless belt includes a first magnetic force generating portion that generates first magnetic force, and a second magnetic force generating portion that generates second magnetic force that is stronger than the first magnetic force. In the first step, the member is placed on the belt, such that a first portion of the member containing the magnetic material is located in the first magnetic force generating portion, and a second portion of the member containing the magnetic material and located rearward of the first portion in a conveying direction is located in the second magnetic force generating portion.

Abstract: Provided are rotary dies that can cut amorphous materials while having suppressed wear. The rotary dies are adapted to cut a target, and include an anvil roller, a die cutter, a first elastic portion, and a second elastic portion. The anvil roller rotates while supporting the target. The die cutter has a projecting edge for cutting the target and is configured to rotate. The first elastic portion is arranged on the outer peripheral surface of the anvil roller, and elastically deforms upon contacting the rear surface of the target when the target is cut. The second elastic portion is arranged on the outer peripheral surface of the die cutter, and elastically deforms upon contacting the front surface of the target when the target is cut. The hardness of the first elastic portion is greater than that of the second elastic portion.

Abstract: In a method for manufacturing a multi-stage gear in which no gap is formed between a small-diameter gear and a large-diameter gear, there are included a first step of forming the small-diameter gear on an outer peripheral surface of a workpiece, a second step of forming a large-diameter gear part by plastically deforming an end portion of the workpiece to increase the diameter thereof, and a third step of forming the large-diameter gear by cutting the large-diameter gear part.

Abstract: In a forging device including a rotating table and a shaping roller, which forging device forges a workpiece such that an outer peripheral surface of the shaping roller is pressed against an end surface of the workpiece in a central-axis direction of the workpiece while the workpiece is rotated by the rotating table, the shaping roller is placed apart from a rotation axis, and a position of that end of the outer peripheral surface of the shaping roller which is opposite to a rotation-axis side in a central-axis direction of the shaping roller is placed at an outer side in a radial direction of the workpiece relative to a position of an outer peripheral surface of the workpiece that has been forged.

Abstract: In a method for manufacturing a multi-stage gear in which no gap is formed between a small-diameter gear and a large-diameter gear, there are included a first step of forming the small-diameter gear on an outer peripheral surface of a workpiece, a second step of forming a large-diameter gear part by plastically deforming an end portion of the workpiece to increase the diameter thereof, and a third step of forming the large-diameter gear by cutting the large-diameter gear part.