PROBLEM TO BE SOLVED: To provide a medical treatment packaging sheet having a mutual-adhesion protection characteristic and a medical treatment packaging material formed by using the medical treatment packaging sheet.SOLUTION: A medical treatment packaging sheet 30 includes a layer including thermoplastic resin, on at least one surface of the sheet. When measurement in a friction test according to the JISK 7125 is performed using one medical treatment packaging sheet 31 and another medical treatment packaging sheet 32 in a state in which the surface of the other medical treatment packaging sheet 32 on the side opposite to its layer including the thermoplastic resin is superposed on a surface of the layer including the thermoplastic resin of the one medical treatment packaging sheet 31, a coefficient of static friction of the one medical treatment packaging sheet's surface having its layer including the thermoplastic resin is equal to or larger than 0.1 and equal to or smaller than 2.5.SELECTED DRAWING: Figure 2【課題】互着防止性を備えた医療用包装シートを提供するとともに、上記医療用包装シートを用いて形成した医療用包装材を提供する。【解決手段】少なくとも一方の面に、熱可塑性樹脂を含む層を有する医療用包装シート３０であって、一の当該医療用包装シート３１の前記熱可塑性樹脂を含む層の表面に、他の当該医療用包装シート３２の前記熱可塑性樹脂を含む層とは反対側の面を重ね合わせて、前記一の当該医療用包装シートと前記他の当該医療用包装シートとを用い、ＪＩＳＫ ７１２５に準じて摩擦試験を行い測定した時、前記一の当該医療用包装シートにおける前記熱可塑性樹脂を含む層を有する面の静摩擦係数が、０．１以上２．５以下である。【選択図】図２
