Goods stack film curtain sealing oxygen-concentration reduction method

Abstract

The invention discloses a goods stack thin film curtain sealing oxygen-concentration reduction method. The goods stack thin film curtain sealing oxygen-concentration method comprises the following steps that step 1, thin films are cut according to the size of goods stacks, and the thin films are made into an upper curtain with a lower opening and a lower curtain with an upper opening through sealants; step 2, the lower curtain is placed on the ground, and then trays and the goods stacks on the trays are placed in the lower curtain; step 3, the upper curtain covers the goods stacks, and deoxidizing agents are put according to the volume ratio of the goods stacks; and step four, an opening of the upper curtain and an opening of the lower curtain are in smooth butt joint and then sealed through the sealants, and operation is completed. The sealing effect is safer in the operation process of film curtain glue sealing, the risks of poor sealing such as film wrinkle coking, micropore scalding and leaking and repeated heat sealing caused by other factors are reduced, and the oxygen-concentration reduction effect of the film curtain is guaranteed.

Description

technical field [0001] The invention belongs to the technical fields of logistics transportation, storage and fresh-keeping, etc., and in particular relates to a method for sealing and reducing oxygen in a cargo stack film curtain. Background technique [0002] Food, agricultural and sideline products, and Chinese medicinal materials often contain ingredients such as oils and high sugars. During logistics, transportation and storage, they are prone to insects and mildew, leading to deterioration and other problems. Therefore, the advantages of film curtains, such as low cost, flexible operation, and convenient maintenance, are more and more valued by enterprises and users. Make curtains according to the volume of the cargo stack, and place deoxidizers or nitrogen generators in the curtains to reduce the oxygen concentration in the curtains to prevent deterioration problems such as insects and mildew, among which sealing is the key. [0003] Commonly used sealing methods for...

AI Technical Summary

Problems solved by technology

One is the way of pressure generation (or clamp pressure or structural pressure such as screw nut), but the long-distance pressure seal is prone to deformation for a long time, resulting in poor sealing

Second, the cost of pressure sealing is much higher than that of other sealing methods

Third, the pressure sealing operation is relatively cumbersome

Moreover, some films are bonded with such liquid glue, which requires surface treatment such as corona or polarity or non-polarity on the surface of the film, which increases the adhesiveness of the film and increases the cost and operating procedures.

At the same time, solvent-based glues require a certain amount of curing time, which often takes several hours or dozens of hours, which is not conducive to the applicability and timeliness of film curtains.

Even the cured glue has poor flexibility, which is not conducive to folding during the film curtain making process

[0007] In the process of stacking goods, the bottom film is often damaged due to trampling or sliding of pallets, and some damages are often difficult to find, which affects the sealing effect