Packaging box

Abstract

The invention relates to a novel packaging box. For a packaging box for a common fluid product, after the product is extruded out, part of air or part of extruded product is sucked into the box due to internal and external pressure difference of the packaging box while a great amount of microorganisms exist outside, so that the product is possibly polluted or even is rotted and deteriorated. Moreover, the common plastic packaging box has unfixed extrusion amount for each time, so that if the product is excessively extruded, waste is caused; and if the product is insufficiently extruded, the packaging box needs to be squeezed repeatedly and the operation is fussy. The packaging box which the invention relates to can prevent the air or the extruded product from being sucked back into the box to pollute the product in the box and can also simply control the amount of the extruded product for each time so as to bring convenience to use of the product.

Description

technical field [0001] This patent is about a packaging box. Background technique [0002] Generally, the packaging box for packaging fluid products, when the product is extruded, part of the air and the product that has been in contact with the outside world will be sucked into the box due to the pressure difference between the inside and outside of the packaging box. However, many microorganisms in the air and in products that have been in contact with the outside world can cause contamination or even spoilage of the products in the box. In addition, the amount of extrusion of the general packaging box is not fixed each time, sometimes too much extrusion will cause waste; sometimes too little extrusion requires multiple extrusion operations, which delays time. Contents of the invention [0003] The packaging box involved in this patent can prevent air or products squeezed out of the box from being sucked into the box, and at the same time, it can simply control the amou...

AI Technical Summary

Problems solved by technology

However, many microorganisms in the air and in products that have been in contact with the outside world can cause contamination or even spoilage of the products in the box

In addition, the amount of extrusion of the general packaging box is not fixed each time, sometimes too much extrusion will cause waste; sometimes too little extrusion requires multiple extrusion operations, which delays time

Images