Medium vinyl acetate (VA) content in EVA resins, generally ranging from about 15% to 28%, offers a balance between flexibility and structural integrity. This makes them suitable for a broader range of applications compared to both lower and higher VA content grades. Here are the main uses for medium VA content EVA resins:
Flexible Packaging Films
Medium VA content EVA is commonly used in the production of flexible packaging films. These films are utilized for food packaging as they offer good barrier properties, sealability, and resistance to low temperatures.
Foam Products
EVA foams made from medium VA content resins are used in a variety of consumer products, including padding in sports equipment, toys, and comfort cushioning in footwear. These foams are appreciated for their good balance of softness and resilience.
Agricultural Films
These resins are employed in agricultural films used for greenhouse covers and mulching. The films help improve light diffusion and increase thermal insulation, promoting faster and more uniform plant growth.
Tubing and Hoses
Medium VA EVA resins are suitable for producing flexible tubing and hoses used in medical applications and consumer goods, benefiting from the material’s flexibility and chemical resistance.
Injection Molded Articles
Due to their enhanced mechanical properties and flexibility, medium VA EVA resins are also used in injection molding processes for making various consumer goods, including durable containers and parts.
Hot-Melt Adhesives
While low VA EVA is prevalent in adhesives, medium VA EVA is also used to formulate hot-melt adhesives where slightly higher flexibility and better tack are needed, such as in woodworking and packaging.
These applications leverage the improved clarity, flexibility, and impact resistance that medium VA content EVA resins offer, making them versatile materials across multiple industries.
Flexible Packaging Films
Medium VA content EVA is commonly used in the production of flexible packaging films. These films are utilized for food packaging as they offer good barrier properties, sealability, and resistance to low temperatures.