Device and method for preparing four-edge-sealing packaging bag and packaging bag prepared through device and method for preparing four-edge-sealing packaging bag

Abstract

The invention discloses a device and method for preparing a four-edge-sealing packaging bag and the packaging bag prepared through the device and method for preparing the four-edge-sealing packaging bag. The four-edge-sealing packaging bag comprises an upper-layer film material, a lower-layer film material and organ film materials on the two sides. The upper-layer film material, the lower-layer film material and the organ film materials on the two sides are prepared through one piece of packaging bag film material. A zipper is arranged between the upper-layer film material and the lower-layerfilm material, and the connecting edge position of the upper-layer film layer and the lower-layer film material and the connecting edge positions of the upper-layer film material and the lower-layer film material and the organs on the two sides are subjected to burning sealing through a burning sealing device, and therefore a four-edge sealing structure is formed. Triangular areas are arranged atthe positions, on one side of the zipper, of the organs on the two sides, and the zipper is located among the edge of the packaging bag and the side corners of the triangular areas. According to the technical scheme, preparing is conducted in the length direction of the film materials of the packaging bag, work in other directions does not exist, in addition, preparing equipment conducts operationon the same production line, an extra production line does not need to be additionally arranged for preparing the side organ triangular areas, the work mass of a bag manufacturing machine is reduced,and the automation degree is high; and the strength of the position of the zipper in an integrated packaging bag structure is improved, and firmness of the packaging bag is improved.

Description

technical field [0001] The invention relates to the field of packaging bag processing, in particular to a device for preparing an integrated four-side-sealed packaging bag structure equipped with a zipper, a method for preparing the packaging bag structure, and the prepared packaging bag. Background technique [0002] Packaging bags refer to bags used to pack various supplies, which make the goods convenient to transport and store during the production and circulation process, and are widely used in daily life and industrial production. The zipper (or opening and closing strip) is one of the commonly used structures to realize the sealing of the article package after the packaging bag is assembled. Considering the firmness of the packaging bag where the zipper (or opening and closing strip) is installed, it is usually near the zipper (or opening and closing strip) Two triangular areas are set at the side organ to prevent the bag from being pulled apart at the zipper (or open...

AI Technical Summary

Problems solved by technology

[0004] However, the above-mentioned technical solution is extremely suitable for packaging bags in which the side organ film and the upper and lower main films are processed separately, but for the upper and lower main films The packaging bag formed by the film and the side accordion film is not suitable; in addition, the formation of the side accordion triangle requires a separate guide mechanism to guide the folding triangle and fold back between the upper and lower main films, which increases the size of the bag making machine. volume and working space

Images