Sliding block zipper bag and manufacturing method thereof

Abstract

The invention provides a sliding block zipper bag. The sliding block zipper bag comprises a front plastic sheet and a rear plastic sheet. The front plastic sheet and the rear plastic sheet are subjected to hot press, and a bag body is formed. An opening is formed in the upper portion of the bag body. A sliding block zipper is arranged on the opening. A folded zipper hinge is arranged on the sliding block zipper. The opening is sealed through the folded zipper hinge. The sliding block zipper bag further comprises a protective layer. The protective layer is attached to the inner side and / or the outer side of the folded zipper hinge in a hot press manner. According to the sliding block zipper bag, the inner side and / or the outer side of the folded zipper hinge of the sliding block zipper are / is covered with the protective layer, and the impact resistance of the zipper hinge of the sliding block zipper is enhanced, so that the situation that the sliding block zipper bag is damaged by falling materials in the material filling process is prevented. According to a method for manufacturing the sliding block zipper bag, the manufacturing procedure is simple and smooth, and large-scale production is facilitated for manufactures.

Description

technical field [0001] The invention relates to a packaging bag, in particular to a slider zipper bag and a manufacturing method thereof. Background technique [0002] At present, when the slider zipper packaging bags on the market are filled with materials, they generally use the bottom filling method to assemble the materials, because if filling from the top, the bag body needs to reserve a filling port at the top, so The slider zipper cannot be heat-sealed, and the heat-sealing of the zipper part of the slider zipper bag is complicated. When the material is filled and then the zipper part is heat-sealed, the heat-sealing effect of the zipper will be poor, not firm and leaking. Therefore , the bottom filling method is widely used; [0003] However, since there is a certain distance from the bottom of the bag body to the zipper part, when the filling capacity is large, the kinetic energy of the material falling is relatively large, and the zipper page of the slider zipper ...

AI Technical Summary

Problems solved by technology

[0002] At present, when the slider zipper packaging bags on the market are filled with materials, they generally use the bottom filling method to assemble the materials, because if filling from the top, the bag body needs to reserve a filling port at the top, so The slider zipper cannot be heat-sealed, and the heat-sealing of the zipper part of the slider zipper bag is complicated. When the material is filled and then the zipper part is heat-sealed, the heat-sealing effect of the zipper will be poor, not firm and leaking. Therefore , the bottom filling method is widely used;

[0003] However, since there is a certain distance from the bottom of the bag body to the zipper part, when the filling capacity is large, the kinetic energy of the material falling is relatively large, and the zipper page of the slider zipper will be easily damaged, which will increase the loss of packaging and thus increase the operating cost. cost

Images