ARTICLE PACKAGING BAG AND MANUFACTURING METHOD THEREFOR

PROBLEM TO BE SOLVED: To provide an article packaging bag wherein a housed article is protected by a cushioning function and a heat insulation function of air chambers formed between laminate films, and even if a part of the air chamber is damaged, the article can be successively protected, and to provide a manufacturing method thereof. SOLUTION: The article packaging bag comprises a bag body made of laminate films including an external plastic film and an internal plastic film and two or more air chambers formed between both films, while the bag has an air inlet port communicating with each air chamber, and the two or more air chambers are formed in crossing stripes by thermally welded lines of the external and internal films. The manufacturing method of the article packaging bag comprises steps of feeding four-layered long plastic films to a welding process, inserting a plate between second and third films, pressing a thermally welding blade or a heat roller from upward and downward of the films to form the welded lines of the air chambers and the air inlet ports, and then fusing to cut the four films while being laminated by a width of the bag body.