Waistcoat bag preparation device and preparation method

Abstract

The invention discloses a waistcoat bag preparation device and a preparation method. The preparation method includes the following steps that firstly, a double-layer film material is conveyed to a heat seal mechanism through a feed mechanism so that the heat seal procedure can be conducted; secondly, the heat seal mechanism conducts hot-pressing sealing on the double-layer film material conveyed by the feed mechanism; thirdly, a notching mechanism conducts stamping on the double-layer film material subjected to heat seal to form the shape of a waistcoat; and fourthly, a discharge mechanism conducts material collection on a waistcoat bag where stamping is completed. The double-layer film material is used for the waistcoat bag preparation device and the preparation method, press fit only needs to be conducted on the bottom of the bag, two lateral sides do not need to be folded, the problem that because the thickness of the lateral sides of the waistcoat bag is different from the thickness of the bottom of the waistcoat bag and the press fit temperature requirements are different, press fit of the waistcoat bag is inappropriate is solved, and therefore the leakproofness and firmness of the heat seal part are ensured, the quality of the waistcoat bag is improved, and the defective rate is decreased to the maximum extent.

Description

technical field [0001] The invention relates to the technical field of bag making, in particular to a vest bag preparation device and a preparation method. Background technique [0002] Most of the existing vest bags include two bags with the same structure. The upper edge of the bag has a handle extending upwards, the lower edges of the two bags are pressed together, and the left and right sides have inwardly folded extensions and are connected. Together, due to the large number of layers formed by the inwardly folded expansion parts, the thickness formed after superimposition is thicker than the part where the two bags are in direct contact. Therefore, when the bag making machine presses the lower edges of the two bags, it will The degree of consolidation between the superimposed part of the two bags and the direct contact part is inconsistent. When the consolidation is carried out according to the pressing temperature and time of the direct contact part, the superimposed ...

AI Technical Summary

Problems solved by technology

[0002] Most of the existing vest bags include two bags with the same structure. The upper edge of the bag has a handle extending upwards, the lower edges of the two bags are pressed together, and the left and right sides have inwardly folded extensions and are connected. Together, due to the large number of layers formed by the inwardly folded expansion parts, the thickness formed after superimposition is thicker than the part where the two bags are in direct contact. Therefore, when the bag making machine presses the lower edges of the two bags, it will The degree of consolidation between the superimposed part of the two bags and the direct contact part is inconsistent. When the consolidation is carried out according to the pressing temperature and time of the direct contact part, the superimposed part will be consolidated because the temperature does not meet the consolidation requirements. It is not firm and easy to crack. When it is consolidated according to the pressing temperature of the superimposed part, the direct contact part will be excessively melted due to the high consolidation temperature and too long time, resulting in waste products

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