BC Adhesives - polyurethane (PUR) adhesives
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What is polyurethane (PUR) adhesive?
Polyurethane (PUR) adhesives are a type of strong and flexible adhesive that is widely used in various industries due to their versatility and ability to bond a wide range of materials including metals, fiberglass, foam, laminates, plastics, and wood. There are several types of PUR adhesives, including hot melt, liquid, and 2-part liquid and polyurea.
One of the key features of PUR adhesives is that they form a bond in two stages. Initially, when the adhesive cools and solidifies, it reaches a holding strength known as green strength. Over the next 8-24 hours, a moisture-curing reaction occurs, leading to the final structural bond.
PUR adhesives have excellent high and low-temperature resistance, making them suitable for use in a wide range of industries. Polyurethane adhesives are also significantly stronger than traditional hot melt adhesives, as they polymerize when they come into contact with moisture in the air, allowing them to form stronger bonds after the curing process is complete. This reaction is called cross-linking.
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Industries that use polyurethane (PUR) adhesives
PUR adhesives are resistant to water, oil, and other chemicals, making them ideal for use in transportation, clear PVC/PET cartons, cork, flooring, laminating, and construction products.
These adhesives are also commonly used in the transportation industry to bond various parts of a vehicle together, such as the frame and body panels. They’re known for their ability to withstand the high stresses and strains that are common in the transportation industry, making them a reliable choice for bonding and sealing car parts.
Polyurethane adhesives are also used in the furniture and woodworking industry, where they are used to bond wood and other materials together to create durable and long-lasting products. They can be used to manufacture cabinets, furniture, floors, and other wood products and to repair and restore antique furniture.
In addition, PUR adhesives are used in the electronics industry for the production of electronic devices and components. They are known for their high electrical insulation properties and are often used to bond electrical components together.