Double-row air valve film and preparation method thereof

Abstract

The invention belongs to the technical field of composite flexible packaging, and discloses a double-row air valve film and a preparation method thereof. The double-row air valve film comprises an airvalve film body, wherein the air valve film body comprises an upper thin film and a lower thin film; two rows of heat-resistant ink layers are transversely arranged on the inner surface of the upperthin film in parallel, and the heat-resistant ink layers are distributed at equal intervals in the longitudinal direction of the upper thin film; and the heat-resistant ink layers comprise the first-row heat-resistant ink layer and the second-row heat-resistant ink layer, and an air inlet separation area is arranged between the first-row heat-resistant ink layer and the second-row heat-resistant ink layer. The preparation method adopts a flexible board printing process, and specifically comprises the steps of printing, laminating, slitting, inspecting and packaging. The double-row air valve film has the characteristics of being simple in structure, good in inflation effect, low in production cost, small in spacing error of the ink layers and the like, and can be widely applied to the production of air column bags so as to improve the production efficiency of the air column bags; and meanwhile, the preparation method of the double-row air valve film is simple, and the process parametersare easy to control.

Description

technical field [0001] The invention belongs to the technical field of composite flexible packaging, and specifically relates to a double exhaust valve film and a method for preparing the double exhaust valve film. Background technique [0002] Air column bag, also known as buffer air column bag, is a new type of shockproof packaging bag filled with natural air. Compared with traditional cushioning packaging such as foamed plastic and cardboard, it has the characteristics of low cost, green recyclability, no pollution, convenient use, and good cushioning effect. Therefore, with the vigorous development of e-commerce and logistics industries, air column bags have also been widely used. For packaging items with different structures, various structures of air column bags have been developed, such as U-shaped air column bags, Q-shaped air column bags Column bag, L-shaped air column bag, air column box, etc. [0003] At present, the existing air column bag consists of an upper ...

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Problems solved by technology

However, the currently used air valve films are all single-row structures, which can only be produced by single heat sealing in the production process of the air column bag, which greatly limits the production efficiency of the air column bag; not only that, in the actual production process of the existing air valve film , both use two air

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