3M Scotch-Weld structural plastic adhesive DP8005 is a two-part acrylic adhesive (10:1 ratio by volume) that can bond many low surface energy plastics, including many grades of polypropylene, polyethylene and TPO's without special surface preparation. - 3M Scotch-Weld adhesive DP8005 can replace screws, rivets, plastic welding, and two-step processes which include chemical etchants, priming or surface treatments in many applications.