Quick vacuum sealing device and manufacturing method thereof, new application and quick sealing method

The invention provides a plastic bag, relates to quick sealing, and is used for packing foods and the like. For example, the plastic bag comprises a plastic bag wall; liquid is in the plastic bag; (a) the plastic bag with the liquid is located in a full-sealed state; a sanitary paste is arranged on an outer wall (97) of the plastic bag; and a sanitary surface is on the surface of the outer wall (97), shielded by the sanitary paste, of the plastic bag; and (b) the plastic bag is one part of a quick sealing device for enabling the liquid to be not polluted by air in the process of one part of the liquid flowing out in provision of the liquid. Atmospheric pressure is used for quickly forming a sealing cavity to save labors and to adapt to the food preservation or to shorten the time of related procedures. 本发明提供种塑料袋，涉及快速密封，用于包装食品等。例如：种塑料袋，包括塑料袋袋壁，塑料袋内有液体，其中：a．该装有液体的塑料袋处于全密封，塑料袋的外壁（97）设有卫生贴，被卫生贴遮盖的塑料袋的外壁（97）的表面有卫生的表面；b．个所述塑料袋为用于在液体提供中使液体在其部分液体流出的过程中不受空气污染的快速密封装置的个部件；本发明利用大气压，能快速形成密封腔，省力，适合食品保鲜；或缩短有关工序的时间。