Summer is a season with more rain and a long time, so it is very necessary to prevent moisture and moisture. The paper-plastic paper tray is not completely moisture-proof, but a moisture-proof cover layer is attached to the surface to reduce the time of moisture returning, so the paper tray is moisture-proof. The problem must be paid attention to, and the moisture resistance problem must reach the standard.

Therefore, in the process of transportation and sales, in order to prevent the moisture problem, the paper tray factory will stop the moisture-proof and waterproof treatment in the manufacturing process. The main methods are as follows:

 Method 1: Add liquid paraffin on the surface of the paper tray, put the product in, wait for a period of time, and absorb a layer of wax film on the surface of the product, so that the moisture-proof function can be completed.

Method 2: Spray the surface of the paper tray with oily material.

Method 3: In the process of producing the paper holder, an appropriate amount of stone powder is added to improve the hardness of the paper holder. Even if it is damp, it will continue to be used.

The moisture-proof treatment of the paper tray factory enables users to use it with confidence and plays a role in recycling.

When designing the paper-plastic paper holder, it is also necessary to pay attention to: according to the performance characteristics of the basic structural elements of the paper holder and the environmental protection paper holder, the structural design of the paper holder can be stopped. The design points are analyzed as follows.

1. Fix the support surface. This is the most fundamental point in the structural design of the paper tray, and the fixed support surface can be determined according to the requirements of the packaged product, the external dimensions and the internal dimensions of the outer packaging. For example, to design a paper tray package for electrical products, the length, width and corresponding structure of the paper tray can be determined according to the outer dimensions of the package and the internal dimensions of the outer packaging, and thus the fixed support surface of the paper tray can be determined. .

At the same time, it is necessary to understand whether the focus of packaging is on strength or on buffering. The packaging of some heavy and high-strength products focuses on strength, but as a buffer packaging, its buffering performance must also be adhered to, while the packaging of some valuable products is biased. The emphasis is on cushioning, and its packaging must also have a certain strength. In the design, the two should be properly separated, and the appropriate base points should be selected according to the shape structure, center of gravity and strength of the packaged product, and then the support surface should be fixed by these base points.

2. Cavities and reinforcing ribs. The buffering effect of the paper-plastic paper holder is mainly accomplished by applying the elastic deformation of the paper wall to slow down and offset the external force when it is impacted. The elasticity of the paper support material itself is not high, mainly depends on the design of the reinforcing ribs of the product and the buffer cavity formed by it. The design of the cavity and the reinforcing ribs plays a vital role in the elastic deformation of the paper support, that is, the buffering ability. , and the fundamental basis for the design of the cavity and reinforcing ribs is the shape and use of the product itself. In the structural design of the paper support, a cavity is set to ensure the dynamic buffering performance of the paper support, and reinforcing ribs are set to increase the strength of the paper support itself.

Several cavities with simple appearance and good dynamic buffering performance are evenly distributed in the paper-plastic paper support structure, which plays the role of buffering, stability and improvement of strength. Problems such as strength reduction can be solved by setting up several or symmetrical reinforcing ribs. The setting of cavity and reinforcing ribs should fully consider the problems of convenient production, simple processing and even distribution, and evenly dispersing the gravity of the product.

3. Related parameters. Determine the relevant parameters in the design according to the requirements of the packaged product and the characteristics of the paper support product structure design: ① size and wall thickness; ② demoulding slope; ③ transition arc.