Waterproof bottom packaging bag

Patent name A waterproof bag with a bottom surface Patent applicant Min Chang Three main applicants Address 325402 Xiaojiang Village, Xiaojiang Town, Pingyang County, Zhejiang Province Inventor Min Changsan Application (patent) No. 200420058402.9 Date of application 2004.12.09 Issuing date Approval Notice No. 2749818 Auditing Announcement Date 2006.01.04 Specification CD-ROM D0601-2 Main Classification Number B65D30/10(2006.01) I Classification Number B65D30/10(2006.01)I;B65D33/16(2006.01)I Division Original Application No. Priority Extraction Practical The new type is a waterproof bag with a bottom surface, including a front surface (1) and a back surface (2). The bottom of the packaging bag is formed by folding and adhering the front surface (1) and the back surface (2). The bottom (1) and back (2) bases are the same in length, and both side edges (13) of the front (1) and back (2) surfaces are separated at the bottom, and the back surface (2) is forward and backward along the separation point. The surfaces are folded and the portion of the front surface (1) protrudes is folded toward the outside of the back surface (2). After folding, the front and back surfaces are in contact with each other. In the packaging bag of the utility model, the structure determines that the bottom of the packaging bag has less gaps, so the waterproofness is better, and the bag is strong and durable. Sovereignty item 1. A waterproof bag with a bottom surface comprising a front surface (1) and a rear surface (2). The bottom of the package is formed by folding and adhering the front surface (1) and the back surface (2). It is characterized in that the lower base lengths of the front surface (1) and the rear surface (2) are the same, and both side edges (13) of the front surface (1) and the rear surface (2) are separated at the bottom part, and the rear surface (2) ) Folding between the forward and rearward surfaces along the separation point, the portion protruding from the front surface (1) is folded toward the outside of the rear surface (2), and the folded surface is in contact with the front and back surfaces.