What Is The Difference Between A Polyurethane & Polyethylene Foam?

1. What Polyethylene Foam? Is The Difference Between A Polyurethane & Pelican cases are highly known for strength and durability. They offer exceptional water resistance. When a Pelican case is combined with foam inserts they protect your equipment and tools from damage. They are perfect for shipping or transporting gadgets like cameras, laptops, guns, iPods, TVs, and many other expensive brittle articles. The foam used in such cases is generally made of Polyurethane or Polyethylene. Polyurethane and Polyethylene are two common and popular types of foams that are known for their quality as well as strength. Depending on the product requirement, these foams are used for pelican case. A pelican case foam is chosen on the basis of the product's nature, weight, and the cushion required by it. Polyethylene and polyurethane are plastic materials that are used to manufacture a wide range of items. The chemical composition of these two types of foams is different. It is essential to use any of these foam pelican cases for properly protecting the items. A pivotal role is played by these two foams to protect the contents of your pelican case. With these foams, you get cushioned protection, which further helps in protecting your items against vibration as well as shock and unexpected mishandling. Polyethylene and polyurethane are different from each other. Some distinct differences between these foams are as such:- Polyethylene Foam:- Polyethylene is a flexible material that is commonly found in lots of consumer goods. Such type of foam is generally is created through a simple chemical structure that includes hydrogen atoms along with carbon atoms. It is a closed-cell foam that helps in not absorbing the liquids. This type of foam is also thermoplastic and does not split or break when it is bent. ● It is a flexible foam that is widely used for amplifiers, large speakers, heavy cords or cables, microphone stands, as well as metal fixtures and heavy industrial machine parts, etc. This type of foam features a cross-link composition that is tightly woven and allows it to respond as a firmer type of foam. ● Polyethylene foam is common in regular-use padding in which participants are landing on their hands or feet and is also what we use standard in our wall padding applications. ● These are perfect for medium to heavyweight items and is also one of the best foam inserts that can be used for pelican cases to keep fragile items secure. It is difficult to bond a polyethylene foam to different subcomponents. ● As compare to polyurethane foam, this foam is much denser and is often used for objects with higher sensitivity that require more rigid stability. They have a low resistance to heat. Polyethylene foam can be custom formulated for meeting exact design needs and its color is black.

2. Polyurethane Foam:- Polyurethane is an open-cell foam that is ideal for use for a wide range of items. These are made with a combination of urethane and polyol groups. It is used for LCD, computer monitors, guns, and cameras, etc. ● Polyethylene foam is capable to withstand temperatures between -80°F up to 300°F and can also be custom made to meet the exact design as per the requirement for a pelican case. ● It is easy to bond polyethylene foam to various subcomponents. Polyurethane foam is perfect for pelican case inserts as they are softer than polyethylene foams. For normal custom foam inserts, such foam is usually the standard choice with a density of 1.6 lb/ft3. ● Polyurethane is capable of absorbing more water, which sometimes makes it difficult to clean as a smooth polyethylene surface. Its color is dark grey and provides excellent vibration and shock absorption to the products or units inside the pelican case. It can also be used for packaging and cushioning most objects. Polyethylene foams can be melted down, recycled, and reformed into another shape, while on the other hand polyurethane foam is a thermoset resin. It is difficult to reform and meltdown such pelican gun case foam into a different item. Source: sites.google.com/view/polyurethane-polyethylene-foam