Apparatus and process for edgefold and seal of liquid packing bag

Abstract

This is a kind of hemming and sealing device and craft method of the liquid-packing bag. It has a tripod to turn over the membrane, under the tripod is the membrane clamp under which there is the pouring and shaping tube. The underparts of the tube are the shaping ring (5,6). After the wrapped material is pulled to the tripod through the lead roller and then is folded into the triangle by the tripod. When it is kept pulling down vertically into the membrane clamp, the clamp will hem it into the inverted U form that is pulled down again. While the wrapped material is moving down, the side of the left wrapped material is folded a 5mm-wide turn-up hem by the turn-ups device on the pouring and shaping tube, then it is further pulled into the round seam between the shaping ring and the pouring and shaping tube, when it is drawn into the second shaping ring, the drawn membrane enters the procedure of its sealing.

Description

Technical field: [0001] The invention relates to the technical field of packaging bags made of liquid composite materials such as dairy products and beverages, and relates to a device for folding and sealing liquid packaging bags and a process method thereof. Background technique: [0002] In the back-sealing process of the existing liquid composite packaging bags such as dairy products and beverages, imported packaging technology equipment is mainly used, and the back-sealing method is formed by flat lapping when forming and packaging. It must be pressed with a width of about 8mm on the inner interface PPC sealing strips, otherwise the liquid in the packaging bag will seep into the paper layer from the section of the packaging material at the inner interface, resulting in liquid leakage; this method of adding sealing strips has a complicated equipment structure and relatively difficult operation ; Existing aluminum paper packaging composite material price is higher already,...

AI Technical Summary

Problems solved by technology

[0002] In the back-sealing process of the existing liquid composite packaging bags such as dairy products and beverages, imported packaging technology equipment is mainly used, and the back-sealing method is formed by flat lapping when forming and packaging. It must be pressed with a width of about 8mm on the inner interface PPC sealing strips, otherwise the liquid in the packaging bag will seep into the paper layer from the section of the packaging material at the inner interface, resulting in liquid leakage; this method of adding sealing strips has a complicated equipment structure and relatively difficult operation ; The price of the existing aluminum paper packaging composite materials is already high, if the method of sealing with sealing strips is adopted, the packaging cost will be even greater

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