Processing method of packaging cylinder, packaging cylinder and packaging tank

Abstract

The invention discloses a processing method of a packaging cylinder, a packaging cylinder and a packaging tank. The packaging cylinder processing method comprises the following steps: 1), a second medium layer is attached to one end of the inner wall of a first medium layer, the first medium forms a cylinder body of the packaging cylinder, and the second medium layer is provided with a first edgereserving part; 2), a third medium layer is attached to one end, far away from the second medium layer, of the outer wall of the first medium layer, and the third medium layer is provided with a second edge reserving part; 3), the first medium layer is rolled into a cylinder-shaped structure to form the cylinder body of the packaging cylinder by adopting a flat winding winding method, at the moment, the second medium layer forms the inner wall of the cylinder body, the third medium layer forms an outer wall of the cylinder body, the first edge reserving part is hermetically connected to the second medium layer, and the second edge reserving part is hermetically connected to the third medium layer. Compared the above mentioned processing method of the packaging cylinder with a traditional technology which the inner wall damp-proof layer is attached to the cylinder body at a packaging cylinder winding connection port, the sealing effect of the winding connection port is effectively improved, and materials are saved.

Description

technical field [0001] The invention relates to the technical field of packaging containers, in particular to a processing method for a packaging cylinder produced by a flat rolling method and having good sealing performance, a packaging cylinder and a packaging can. Background technique [0002] With the development of society, various packaging utensils are constantly being introduced, especially in the food field, which pays great attention to packaging utensils. For some foods that are extruded and fragile during transportation, it is necessary to use packaging cans for packaging. Existing food packaging cans, such as potato chip packaging paper tubes, generally use the oblique rolling method to wind the tube body. When the paper tube is wound by the oblique rolling method, in order to ensure the sealing effect, there will be overlapping parts between each circle. Then the overlapping part is heat-sealed at high temperature, so that the raised marks of the overlapping p...

AI Technical Summary

Problems solved by technology

Existing food packaging cans, such as potato chip packaging paper tubes, generally use the oblique rolling method to wind the tube body. When the paper tube is wound by the oblique rolling method, in order to ensure the sealing effect, there will be overlapping parts between each circle. Then heat the overlapping parts at high temperature, so that the processed paper cans can easily see the raised marks on the overlapping parts from the outside, which will affect the appearance

In addition, only the inner wall of the paper cans processed by the oblique rolling method can be covered with film, and the outer wall cannot be coated with film, so the moisture-proof and waterproof effects are not good.

In view of this, there are now many paper cans that are processed in a flat roll method. The method is to first paint the inner wall of the paper with glue, and then wind it layer by layer until it reaches the end. Packaging cans, although the inner and outer walls can be coated with film for moisture-proof and waterproof treatment, but the current processing technology is to directly paste the moisture-proof film on the inner wall and outer wall, and at the interface, the film Welded on the paper layer, so that when the winding interface of the paper can is in contact with water for about half an hour, the water will seep into the inside of the paper can from the interface, thereby affecting the shelf life of the items in the paper can

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