Abstract: A method for manufacturing a pouch-type packaging material includes: a first folding process; a first cutting process of cutting the top-side sheet material, a second sub-region, a first main region, and a first sub-region along a first cutting line that extends from a portion where the top-side sheet material and the second sub-region overlap to a portion closer toward a bottom side in a z direction beyond a first boundary line; a second folding process; a second cutting process of cutting the top-side sheet material, the first sub-region, the first main region, and a second main region along a second cutting line to form a top-side sheet from the top-side sheet material, where the second cutting line extends from a portion where the top-side sheet material and the first sub-region overlap to a portion closer toward the bottom side in the z direction beyond the second boundary line.

Abstract: This invention relates to a rotary encoder for use in measuring the number of revolutions per minute or measuring the angular phase of a rotary shaft of a rotary machine. The encoder is provided with a fixed slit disc having slits therein, and a rotary slit disc disposed so as to be spaced from the fixed slit disc at a predetermined distance, having a plurality of slits arranged radially at regular angular intervals, and adapted to be rotated with the rotary shaft. The encoder is shipped to a user after the rotary slit disc has been fastened to the fixed slit disc on the part of the manufacturer.