PROBLEM TO BE SOLVED: To provide a method for easily fusion-bonding a plastic film to an object to be fusion-bonded with infrared laser in manufacturing a medicine bag and a medicine bag.SOLUTION: This invention relates to a method for fusion-bonding a plastic film (8a or 8b) to an object to be fusion-bonded such as a port member (16) in manufacturing a medicine bag, and a medicine bag. The method for fusion-bonding includes: a step of disposing a heat generation element (24a or 24b) which absorbs infrared laser (L) and generates heat on a surface (8c) of the plastic film (8a or 8b) located on the opposite side (a front side) from the port member (16) side, or between the port member (16) and the plastic film (8a or 8b) a step of pressing a press member (30a or 30b) which allows the infrared laser (L) to be transmitted from the plastic film (8a or 8b) side (the front side) and a step of irradiating the heat generating element (24a or 24b) with the infrared laser (L) through the press member (30a or 30b).COPYRIGHT: (C)2014,JPO&INPIT【課題】薬剤バッグの製造の際、プラスチックフィルムを被溶着物に赤外線レーザーによって簡易に溶着させる溶着方法、及び、薬剤バッグを提供する。【解決手段】本発明は、薬剤バッグの製造の際、プラスチックフィルム(8a,8b)をポート部材(16)等の被溶着物に溶着させる溶着方法及び薬剤バッグに関する。本発明の溶着方法は、ポート部材(16)の側の反対側(オモテ側)に位置するプラスチックフィルム(8a,8b)の面(8c)、又は、ポート部材(16)とプラスチックフィルム(8a,8b)との間に、赤外線レーザー(L)を吸収し発熱する発熱要素(24a,24b)を配置する工程と、赤外線レーザー(L)を透過可能な押付け部材(30a,30b)をプラスチックフィルム(8a,8b)の側(オモテ側)から押付ける工程と、赤外線レーザー(L)を押付け部材(30a,30b)を通して発熱要素(24a,24b)に照射する工程を有する。【選択図】図4
