Polyethylene foam is made of a closed-cell structure. This means that it is composed of numerous air bubbles close to each other but sealed off completely. This structure makes the material water resistant in addition to offering extra rigidity and strength. This is not the case for the open-celled foams. Polyethylene is resistant to petroleum products and solvents. It also has antimicrobial properties ensuring that the growth of mold and bacteria is inhibited. This foam is very resilient, this is the reason why it can still regain its original form after being compressed. It also offers the required cushioning and padding to secure various products during transportation. These are some of the physical characteristics that allow the material to be versatile and ideal for custom projects.
The closed-cell polyethylene foam is made by heating polymer compounds while adding various additives to the base formula. This allows for the alteration of its properties and creation of special qualities. This is the reason why in addition to the standard polyethylene sheet foam, there is also fire retardant and anti-static versions of the foam. The addition of various chemicals also ensures that there is consistency throughout the foam products. There are various densities available in the market depending on the requirements of the application it is intended for. The higher density foams have smaller cells and thicker cell walls compared to lower density foam. The anti-static properties of polyethylene foam are utilized in the handling, transportation and packaging of sensitive electronic components. The foam dissipates the electro-static charge that builds up during movement of the components. The anti-statics foams are usually designated with a bright pink color for easier identification. Dies can be used to alter the appearance of polyethylene especially in visual applications. This gives you the ability to customize them in personal projects to meet your requirements. Polyethylene is ideal for various applications because of its versatility and affordability.