Patent ID: 8777487
Filing Date: 2014-07-15
Classification: B65D

Abstract:
1. An air-evacuable storage bag with multiple air exit holes comprising: two outer film sheets, comprising a first end, a middle end and a top end; two inner film sheets, disposed between the two outer film sheets, and positioned between the top end and the middle end of the two outer film sheets; a crosswise hot sealing line, formed by hot-sealing the two outer film sheets and the two inner film sheets; a storage space, formed between the crosswise hot sealing line and the first end and having two inner surfaces respectively defined by the two outer film sheets; a plurality of hot sealing portions, positioned at the inner surfaces of the storage space close to the middle end of the two outer film sheets, such that one of the two outer film sheets is adhered, at each of the hot sealing portions, to one of the two inner film sheets that is adjacent to the one of the two outer film sheets; an air exhaust area, formed between the crosswise hot sealing line and the top end of the two outer film sheets including: a plurality of special-shaped hot sealing points distributed in the air exhaust area, each special-shaped point being formed by one of adhering the two inner film sheets to each other by means of hot sealing and adhering the two inner film sheets and the two outer film sheets to each other by means of hot sealing, the plurality of air exhaust guide passages being formed among the plurality of special-shaped hot sealing points; and a plurality of strips of heat resistant material spread on inner sides of the two inner film sheets and between the two inner film sheets, the crosswise hot sealing line being stretched over each strip of the heat resistant material, the air outlets being formed at the strips of the heat resistant material between the two inner film sheets, wherein a top end of the air exhaust area and one end thereof are adhered by means of hot sealing to form an air extraction guide passage, one side of the air extraction guide passage comprising an exit portion, each air outlet is connected with the air extraction guide passage, the hot sealing portions and the crosswise hot sealing line form an automatic open-close device, and each strip of the heat resistant material corresponds to at least one of the hot sealing portions; wherein air in the storage space is squeezed toward the middle end and causes said two outer film sheets to be pushed apart, so that said two outer film sheets respectively pull said two inner film sheets apart by the hot sealing portions to open said air outlets and to allow air in the storage space to flow out of the bag from the air outlets and then along the air exhaust guide passages.