Patent ID: 7228969
Filing Date: 2007-06-12
Classification: B65D

Abstract:
1. An air-filled cushioning material formed by sealing part of non-breathable soft resin sheets and having a compartment area that produces cushioning effect by filling with air thereinside, wherein said compartment area is separated into a first compartment and an adjacent second compartment, both compartments communicating with each other via an air-flow passage, and said air-flow passage allows an air-flow to pass from either of the compartments to the other while applying resistance, and through which the air in either of the compartments which accepts an external force moves to the other compartments, wherein the air-flow passage is composed of a first air-flow passage and a second air-flow passage disposed parallel to each other, and said first air-flow passage is formed in order that resistance of the passing air-flow from the second compartment to the first compartment may be larger than from the first compartment to the second compartment, and said second air-flow passage is formed in order that resistance of the passing air-flow from the first compartment to the second compartment may be larger than that from the second compartment to the first compartment.