Now even the heaviest packages can withstand rough handling. Scotch Heavy Duty Shipping Packaging Tape holds strong on all box types including 100% recycled boxes. It's guaranteed to stay sealed. The strong, tough, solvent-free hot melt adhesive locks in your contents and locks out everything else. You don't need layers of tape to get the job done - just one strip at a time - so you save time and money. Your heavy packages can bear the weight and stay sealed through it all with Scotch tape.