PROFORM™ 3650, 3651 and 3652 are three new polyolefin hot melts that the company has added to its line of PROFORM adhesives. They offer superior adhesion to polypropylene and other difficult-to-bond plastics. These hot melts provide a good barrier against moisture and water vapor, and are highly chemical-resistant against polar solvents and solutions, including acids, bases and alcohols. The products are available in bulk-block form, and as sticks and pellets used with manual and pneumatic dispense equipment.