| 摘要 |
PURPOSE: A PET bottle is provided to improve freshness after unsealing the bottle by including a concave guide line and to maintain original taste of beverages by preventing the permeation of an air pressure of the inner part of the bottle. CONSTITUTION: A PET bottle for keeping freshness is manufactured by adding a concave guide line when the bottle is molded. The freshness and original taste of beverages are kept for a long time by preventing the penetration of an air pressure of the inner part of the bottle. A part of the bottle is manufactured into a corrugation structure and the air pressure of the inner part of the bottle is reduced by discharging the air of the corrugation structure and loss of the internal carbon dioxide is reduced.
|
