PACKAGING BAG AND PRODUCTION METHOD THEREOF

摘要

A packaging bag (11) comprises a cylindrical mesh (5) and a pair of bands (6), wherein the cylindrical mesh (5) is woven using uniaxially-stretched tapes as warps and wefts, intersections of the warps and wefts are thermally adhered, the uniaxially-stretched tape is composed of at least three thermoplastic layers, the melting point of the thermoplastic resin constituting the inner layer is lower than the melting point of the thermoplastic resin constituting the outer layer, the bands (6) are made of a thermoplastic resin, the cylindrical mesh (5) is arranged between the pair of bands (6), surfaces of the cylindrical mesh (5) and the pair of bands (6) are thermally adhered, and the cylindrical mesh (5) and the pair of bands (6) are thermally adhered and closed at the bottom (7) of the packaging bag (11). Thereby, provided is a packaging bag which has favorable air permeability, can prevent damage to agricultural crops, etc., such as vegetables, fruits, and bulbs when such agricultural crops, etc., are filled in the bag, has a low weight, and is superior in strength and a shape retention property, and also provided is a production method of the packaging bag.