Bag for packing liquid, and producing method

Abstract

A packing bag for liquid features that its folded angular ring on its bottom is folded outward and then stuck on lateral surface, and the transverse sealing edge is stuck also. Its advantages are high antiwear performance and high standing stability.

Description

Technical field [0001] The invention relates to a liquid packaging bag and a manufacturing method thereof, in particular to a packaging bag in the aseptic liquid filling industry and a manufacturing method thereof. Background technique [0002] The milk and beverages we often drink must be packaged in aseptic packaging if they are to be stored for a long time. The packaging must be stored at ambient temperature and the product must be protected from light, oxygen in the air and foreign bacteria. Common packaging bags in the market include pillow bags, figure 1 Brick package shown, figure 2 Roof package shown, image 3 Crown bag, drill bag, etc. are shown. The most typical example is a hexahedral brick package. The packaging materials used in the aforementioned types of bags are all multi-layer composite paper tapes. According to the different packaging materials, the number of packaging layers and materials are different, but the basic layers are roughly the same, mainly includ...

AI Technical Summary

Problems solved by technology

In addition, when the overlapping parts of the 7-layer packaging layers are applied with pressure and recessed, the four points 4-1, 4-2, 4-3, and 4-4 at the corners will often protrude, and the packaged product will contact the table when it is upright. The four points happen to be the weakest part of the packaged product and are easily damaged

After a period of transportation and turnover, corner damage often occurs

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