Analysis of the structural hierarchy of Double sided EVA foam tape
Release time:
Mar 05,2025
Double sided EVA foam tape is a functional tape widely used in many fields. Its unique structural hierarchy gives it a variety of excellent properties.
Overall, it is mainly composed of three layers. The first is the EVA foam layer in the middle. EVA (ethylene-vinyl acetate copolymer) foam is the core part of this tape, which has good flexibility and cushioning properties. The density and pore structure of EVA foam have a key impact on the performance of the tape. Lower density foam is often softer and can provide better cushioning effect, which is suitable for application scenarios with high shock absorption requirements, such as protecting precision components from vibration shock in electronic product packaging.
On both sides of the EVA foam layer are glue layers. The glue layer is the key part to achieve the adhesive function of the tape. There are various types of glue, and the most common ones are acrylic glue. The way the glue is attached to the EVA foam is very important, and it needs to ensure that the glue will not separate from the foam under various conditions of use. This requires that the glue can be evenly coated on the foam surface during the production process and have good affinity with the foam.
The properties of the outer glue layer determine the adhesion effect between the tape and the adherend. On the one hand, the glue needs to have appropriate initial adhesion so that it can quickly and firmly adhere to the surface of the adherend at the beginning of the adhesion. On the other hand, it also needs to have good stickiness to ensure that the tape will not debond during long-term use. Whether on smooth metal surfaces, plastic surfaces, or on some materials with a certain degree of roughness, the structural layers of Double sided EVA foam tape work together to enable it to be stably adhered and play its multiple functions such as buffering, sealing, and fixing.
May 19,2026
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