Abstract: A packaging body includes a base on which a packaging target is placed, a box including first flaps and second flaps, and a binding body configured to bind the base and the box and disposed between the first flaps and the second flaps. The box has a rectangular shape and an upper opening portion and configured to cover a top face and side faces of the packaging target. The first flaps are disposed in pairs opposing to each other extending from opposite scorelines of the upper opening portion and including an opening through which an included object is inserted. The second flaps are disposed in pairs opposing to each other extending from different opposite scorelines of the upper opening portion and configured to be folded over the first flaps when the first flaps are folded. The first flaps further include partial flap portions.

Abstract: A packaging body includes a base on which a packaging target is placed, a box including first flaps and second flaps, and a binding body configured to bind the base and the box and disposed between the first flaps and the second flaps. The box has a rectangular shape and an upper opening portion and configured to cover a top face and side faces of the packaging target. The first flaps are disposed in pairs opposing to each other extending from opposite scorelines of the upper opening portion and including an opening through which an included object is inserted. The second flaps are disposed in pairs opposing to each other extending from different opposite scorelines of the upper opening portion and configured to be folded over the first flaps when the first flaps are folded. The first flaps further include partial flap portions.

Abstract: A polymer electrolyte membrane, wherein the period length L in the membrane surface direction, which period length is defined by formula (1) and is measured by using a small-angle X-ray diffractometer, is less than 52.0 nm: L=?1/(2 sin(2?i/2))??(1) wherein 2?i represents a scattering angle in the membrane surface direction and ?1 represents the wavelength of X-rays used when the scattering angle in the membrane surface direction is measured.

Abstract: A polymer electrolyte membrane, wherein the period length L in the membrane surface direction, which period length is defined by formula (1) and is measured by using a small-angle X-ray diffractometer, is in the range from 52.0 nm to 64.9 nm: L=?1/(2 sin(2?i/2))??(1) wherein 2?i represents a scattering angle in the membrane surface direction and ?1 represents the wavelength of X-rays used when the scattering angle in the direction of the membrane surface is measured.