PROBLEM TO BE SOLVED: To provide a washing method in which heat-resistant bacterium adhering to a laundry can be washed and sterilized with high reliability by using a peracetic acid preparation with easy handleability and high safety, wherein the washing method provides a working environment during washing, is easy to treat a waste liquid, is desirable for an environment, and can provide a high sour effect after drying when the peracetic acid preparation is used in a rinsing step after washing.SOLUTION: The washing method for the laundry, which uses an alkali detergent and the peracetic acid preparation, the peracetic acid preparation is used which comprises 1.0 to 6.0 mass% of peracetic acid, 1.0 to 6.0 mass% of hydrogen peroxide, 20 to 40 mass% of acetic acid, and water, wherein the total mass of the peracetic acid, hydrogen peroxide, acetic acid, and water is 100 mass%. Moreover the laundry is sterilized with water containing the peracetic acid preparation and having a peracetic acid concentration in the water of 10 to 500 mass ppm.COPYRIGHT: (C)2013,JPO&INPIT【課題】本発明は、取扱いが容易で安全性が高い過酢酸製剤を使用して、被洗物に付着した耐熱性菌を、高い信頼性で洗濯殺菌できるのみならず、洗濯中の作業環境が良好で、かつ、廃液処理が容易で環境に好ましいばかりか、本洗後の濯ぎ工程で過酢酸製剤を使用すると、乾燥後に高いサワー効果を付与し得る洗濯方法を提供する。【解決手段】アルカリ洗剤及び過酢酸製剤を使用する被洗物の洗濯方法において、過酢酸1.0~6.0質量%、過酸化水素1.0~6.0質量%、酢酸20~40質量%、及び、水の合計100質量%から成る過酢酸製剤を使用し、かつ、該過酢酸製剤を含む水であって、該水中の過酢酸濃度が10~500質量ppmである水により、被洗物を殺菌することを特徴とする洗濯方法。【選択図】なし
