Plastic packaging bag that seal structure optimizes

The utility model relates to a plastic packaging bag that seal structure optimizes. The utility model discloses a bag body and the seal structure who is located bag body top, seal structure including bracelet, the seal membrane that can open and shut, sealed zip fastener, the top of seal membrane sets up the bracelet that can open and shut, the below of seal membrane sets up sealed zip fastener, bracelet, seal membrane and sealed zip fastener all seal with the bag body heat, at least aly in seal membrane or the sealed zip fastener are used for keeping that the bag personally experiences sth. Part of the body seals. The utility model provides a consumer's convenience, the leakproofness problem of heavy packing is favorable to the reuse of wrapping bag, has reduced the contamination of environment.