Patent ID: 9199596
Filing Date: 2015-12-01
Classification: B29D,B60R,B65B,B65D,F16K,Y10T

Abstract:
1. An air bag packaging arrangement, comprising: an air bag which comprises at least one air cell, wherein each said air cell comprises a first cell layer and a second cell layer overlapped with each other to form an air chamber and a valve opening communicating with said air chamber; and an air valve, which is a double non-return valve to inflate each said air cell only, comprising: first and second sealing films overlapped between said first and second cell layers of each said air cell and extended from said valve opening of each said air cell into said air chamber thereof; a first heat resisting substance and a second heat resisting substance; and a check sealing film, having a proximal edge portion and a distal edge portion, overlapped between proximal portions of said first and second sealing films to define an air inflating channel between a first side of said first sealing film and said check sealing film, and a backflow prevention channel between an opposed second side of said check sealing film and said second sealing film, wherein said air inflating channel is constructed to be opened when inflating said air chamber and is closed when said air chamber is inflated, wherein said first heat resisting substance and said second heat resisting substance are provided at said first side and said second side of said check sealing film respectively, wherein said first heat resisting substance is provided between a proximal edge portion of said first sealing film and said proximal edge portion of said check sealing film at said first side thereof, wherein said second heat resisting substance is provided between said distal edge portion of said check sealing film at said second side thereof and said second sealing film, such that a proximal end of said backflow prevent channel is closable, wherein said second heat resisting substance not only prevents said check sealing film to be bonded to said second sealing film to ensure a distal end of said backflow prevention channel to be opened but also enhances said check sealing film to be coupled to said first sealing film by surface tension to close said air inflating channel, wherein said air inflating channel is arranged for only inputting air into said air chamber to inflate each said air cell until distal portions of said first and second sealing films are overlapped and sealed to close said air inflating channel by means of the air pressure within said air chamber, wherein an inflating direction of said air inflating channel to inflate said each air cell is opposite to an airflow direction of said backflow prevent channel from said air chamber toward said valve opening, wherein in case of air leakage between said distal portions of said first and second sealing films, the air within said air chamber is guided to flow to said backflow prevention channel for creating a supplemental air pressure to further seal and close said air inflating channel, so as to make up a deficient sealing effect of said first and second sealing films.