In the modern packaging industry, EVA (ethylene-vinyl acetate copolymer) foam blocks are widely used as packaging linings due to their excellent cushioning properties and processing properties. This lightweight, soft and elastic material provides safe, secure protection for a variety of products, ensuring they are not damaged during transportation and storage.
Selection of hardness and density
The choice of hardness and density of EVA foam blocks used for packaging linings is crucial. Generally speaking, EVA foam blocks with a hardness between 25A and 40A are more suitable as packaging linings. This hardness of EVA foam block can not only provide good cushioning effect, but also maintain a certain degree of support, effectively preventing product collision and vibration during transportation.
In terms of density, it is recommended to choose EVA foam blocks with a density of 30 to 45kg/m³. This density of EVA foam blocks not only ensures sufficient cushioning performance, but also has a certain degree of durability and can withstand the test of repeated use and transportation.
Application fields
EVA foam blocks are widely used in various types of packaging due to their good cushioning properties and processing properties. Whether it’s electronics, glassware, ceramics or precision instruments, they can all be lined with EVA foam blocks to provide extra protection. Especially in the packaging of fragile, fragile or high-value products, EVA foam blocks play an indispensable role.
The role of packaging lining
Using EVA foam blocks as packaging linings mainly serves the following functions:
Buffering and shock absorption: EVA foam blocks have good elasticity and resilience, and can effectively absorb and disperse the impact generated during transportation, protecting products from damage.
Support and fixation: EVA foam blocks can be customized according to the shape and size of the product, providing solid support and fixation to prevent the product from sliding or toppling during transportation.
Dust-proof and moisture-proof: EVA foam blocks also have certain dust-proof and moisture-proof properties, which can effectively protect products from the external environment.
Comparative advantages
Compared with other packaging materials, EVA foam blocks have the following advantages:
Environmentally friendly and harmless: EVA foam blocks are non-toxic and odorless, comply with environmental protection requirements, and will not cause pollution to products and the environment.
Easy to process: EVA foam blocks have good plasticity and processing properties, and can be cut, bent, and pasted as needed, which is convenient and practical.
Cost-effectiveness: Compared with some high-end packaging materials, EVA foam blocks are lower in cost and more cost-effective, making them suitable for mass production and application.
Service life
The service life of EVA foam blocks mainly depends on factors such as frequency of use, environmental conditions, and maintenance. Under normal use and maintenance, the service life of EVA foam blocks can reach 2 to 5 years, or even longer. In order to extend its service life, it is recommended to clean it regularly and avoid direct sunlight and high temperature baking.
In summary, EVA foam blocks with a hardness of 25A to 40A and a density of 30 to 45kg/m³ are selected as packaging linings. They have good cushioning performance, processing performance and environmental protection performance, and are widely used in various types of packaging. Its service life is as long as 2 to 5 years, providing safe and stable protection for the product, while also having high cost performance and environmental protection value.