PROBLEM TO BE SOLVED: To provide a PTP package formed of a storage body storing a tablet or the like and a sealing member sealing an opening of the storage body which uses a plastic film as the sealing member, and has both high moisture proofness to the tablet or the like and seal break property at the time of taking out of the tablet or the like.SOLUTION: In a PTP package, a sealing member has an inorganic oxide layer, an overcoat layer and any one of an aluminum layer and an aluminum compound layer in this order on a base material, where the base material is formed of a plastic film, a large number of fine recesses having an average depth of 30-50% of the thickness of the base material are provided on a surface in an opposite side to the inorganic oxide layer of the base material, and a seal layer formed of a heat seal lacquer or a heat-sealable resin is provided on a surface side contacting the storage body.SELECTED DRAWING: Figure 2COPYRIGHT: (C)2018,JPO&INPIT【課題】錠剤等を収納する収納体と、収納体の開口部を封止する密封部材とからなるＰＴＰ包装体において、密封部材としてプラスチックフィルムを用い、錠剤等に対する高い防湿性と錠剤等の取り出し時の破封性をともに有するＰＴＰ包装体を提供すること。【解決手段】密封部材は、基材上に無機酸化物層と、オーバーコート層と、アルミニウム層またはアルミニウム化合物層のいずれかと、をこの順に備え、前記基材はプラスチックフィルムからなり、前記基材の前記無機酸化物層側と反対側の面に、平均深さが前記基材の厚さの３０～５０％の深さである多数の微小凹部を設け、前記収納体に接する面側に、ヒートシールラッカーまたはヒートシール性樹脂からなるシール層を備えたＰＴＰ包装体とする。【選択図】図２
