PROBLEM TO BE SOLVED: To provide a packaging material which keeps the content of an effective composition in an agrochemical preparation during long-term preservation and is suitable for housing a heavy material without damaging the package strength thereof, and to provide a gazette bag the bottom of which becomes square when the contents are stored therein, has a self-standing property and can be opened simply and easily when used.SOLUTION: The packaging material is suitable for preserving agrochemical preparations and has a heat-sealable resin layer as the innermost layer thereof, contains a heat-resistant resin in the outermost layer thereof and a metallic film layer as one constituent of an intermediate layer thereof, and has a resin layer adjacent to the innermost layer, which resin layer is formed from a laminate stuck by an extrusion lamination or poly sand lamination method. The gazette bag has a gazette part on both side surfaces thereof, the self-standing property improved by applying bottom seal to the bottom part thereof, and a notch arranged under a top seal so that the gazette bag can be opened easily by hand.COPYRIGHT: (C)2016,JPO&INPIT【課題】長期間の保存中に農薬製剤中の有効成分含量を保ち、包装強度を損なうことなく、重量物の収納に適した包装材を提供する。また、内容物を収納した時に角底となり、自立性を有し、使用時に簡便に開封することができるガセット袋を提供する。【解決手段】最内層にヒートシール性樹脂層を設け、最外層に耐熱性樹脂を有し、中間層の構成の一部に金属フィルム層が含まれ、最内層と隣接する樹脂層が押出ラミネートまたはポリサンドラミネート法によって貼り合わされた積層体により形成された農薬製剤を保存するのに適した包装材。また、上記包装袋が両側面にガセット部を有し、底部に船底シールを施して自立性を上げ、更に天シール下にノッチを設け、手で容易に開封できることを特徴とするガセット袋である農薬製剤を収納する農薬製剤の保存方法。
