Applications of Polyurethane Adhesives and Sealants

In today s competitive markets it is often necessary to use complex structures made of different layered materials in order to achieve the desired combination of properties for particular applications. 

Polyurethane adhesives are produced in many grades such as one-component, two-component, dispersion and solvent based, and hot melted for use in different application areas. PUR adhesives have a good adhesion to wood, metal and plastics and find, therefore, end use in many industrial applications. Some applications outlined by sector are presented in this section. 

Some reactive polyurethane adhesives such as one- and two-component ones are particularly suitable for wood bonding. They are currently being used for the bonding of parquets and other wood flooring, mainly because of their strength and resistance. They are also being used for bonding of heavy duty rubber floor in commercial areas with heavy foot traffic [24]. 

PUR adhesives can be produced in many grades and can even be customised for special applications. 

Depending on their use and characteristics, solvent or solventless polyurethane based adhesives are available and can also be customised for special packaging requirements. Some typical uses for one-component PUR adhesives are for adhesion of shopping bags, printed films, and adhesives for snack food bags. These are especially suitable for these applications mainly because they are solvent free, moisture curable, and easy to apply. 

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