workmanship
Thermoforming is the process of clamping pre cut sheet or plate-shaped materials onto the frame of a molding machine, allowing them to be heated and softened at a suitable temperature with high elasticity.
The sheet or board is heated while extending, and then it is pressed tightly against the mold surface by the applied pressure (such as vacuum pressure, air pressure, or mechanical pressure) to achieve a shape similar to the mold surface.
After cooling and shaping, cutting and trimming, the desired plastic finished tray can be obtained.
2、 Characteristics and Applications
characteristic:
Hot press formed trays have the characteristics of low cost, high production efficiency, and strong customization.
Pallets can be designed and manufactured according to actual needs to meet the packaging, transportation, and storage requirements of different fields and products.
Application:
Hot pressed trays are widely used in various fields such as food packaging, medical devices, electronic products, automotive components, etc.
For example, in the field of food packaging, hot pressed trays can be used to hold fruits, vegetables, meat, and other foods, maintaining their freshness and hygiene.
In the field of medical devices, hot press formed trays can be used for storing and transporting medical devices and supplies, ensuring their safety and sterility.
3、 Materials and Customization
Material Science:
Hot press formed trays are usually made of various thermoplastic materials such as PS, HIPS, PE, PP, ABS, PVC, PC, etc.
These materials have good processing performance, physical properties, and chemical stability, which can meet the needs of different fields and products.
customized:
Hot press formed trays can be customized according to customers' actual needs, including size, shape, color, thickness, and other aspects of customization.
Customized pallets can better meet the specific needs of customers, improve the packaging effect and transportation efficiency of products.
4、 Advantages and Challenges
Advantages:
The hot pressing process has the advantages of short production cycle, low cost, and low mold cost.
Hot press formed trays can produce large parts and simplify products that were originally composed of multiple parts into one part, saving material and assembly costs.
Challenge:
The depth of the hot pressed tray is limited to a certain extent. Generally, the aspect ratio of the container is 0.5~2, and the ideal aspect ratio is less than 1.
The accuracy of the parts is poor, with a relative error generally above 1%. It is difficult to ensure the consistency of structure or size between different parts using hot pressing method, and it is also difficult to ensure the uniformity of wall thickness in different parts of the same part.
