Introducing Fastlock® 781: The Hot Melt That Bonds Where Others Fail

Fastlock® 781 is now available — engineered to solve one of packaging’s most persistent problems: reliably bonding low surface energy (LSE) materials.

Materials such as BOPP, PP, PET and Metpol have always been difficult for standard hot melt adhesives. Traditional grades often fail to wet these surfaces properly, resulting in weak bonds, lifting lids, and unnecessary pack rejections.

Fastlock® 781 changes that.

Designed using an advanced synthetic resin system, Fastlock® 781 delivers strong, dependable adhesion on substrates that typically sit at the limits of hot melt performance. It has already proven effective across a range of demanding applications, including:

• Wipe lids

• BOPP sandwich and food-to-go packs

• Juice and milk cartons, with compatibility for Tetra Pak, SIG and Elopak equipment

What sets it apart?

• Exceptional bonding on low surface energy materials

• Clean, consistent running on high-speed lines

• Reliable performance in tough, high-throughput packaging environments

Fastlock® 781 is ideal for manufacturers looking to reduce failures, improve pack integrity, and run more efficiently on modern substrates.

If you’re working with materials that are traditionally “difficult to bond,” Fastlock® 781 could be the solution.

Complete the form to get your copy of the information sheet and arrange a Discovery Meeting