3M Scotch-Weld DP8005 Off-White Glue for Polyethylene PE, Polypropylene PP, and TPO Soft Rubbery Plastics (PE, HDPE, LDPE, PP, PPCO, PPHO)

Product Name: 3M Scotch-Weld DP8005 Off-White Glue for Polyethylene PE, Polypropylene PP, and TPO Soft Rubbery Plastics (PE, HDPE, LDPE, PP, PPCO, PPHO)

3M Scotch-Weld DP8005 is a specialty two-part acrylic structural adhesive formulated to solve the challenge of bonding low surface energy (LSE) plastics. It creates a strong, durable bond on materials like polypropylene (PP), polyethylene (PE), and thermoplastic polyolefin (TPO) without the need for primers, flame treatment, or other complex surface preparation steps. This makes it a valuable alternative to mechanical fasteners or plastic welding.

Popular Applications & Uses
- Attaching plastic panels, housings, or trim in appliance manufacturing and repair.
- Assembling sporting goods made from polyolefin plastics.
- Bonding plastic components in specialty vehicles and transportation equipment.
- Replacing rivets, screws, and some plastic welds for a cleaner aesthetic.
- General product assembly involving polypropylene and polyethylene.

Industries that Commonly Use It
- Appliance Manufacturing
- Sporting Goods and Equipment
- General Industrial and Product Assembly
- Automotive and Specialty Vehicle
- Signage and Displays

Special and Unique Features
- Bonds low surface energy plastics without primers or extensive surface prep.
- One-step process simplifies assembly and increases throughput.
- Excellent resistance to water, humidity, and many chemical agents.
- The medium viscosity allows for controlled dispensing without excessive running or sagging.
- Contains 0.008-inch glass beads to ensure a consistent and optimal bondline thickness.

Key Properties
- Base: Methacrylate Acrylic
- Color: Off-White (cures to a yellow color)
- Mix Ratio: 10:1 by volume
- Work Life: 2.5 to 3 minutes at 73 F (23 C)
- Handling Strength: Approximately 2-3 hours
- Hardness: 55 Shore D

Materials Bonded
- Primary: Polypropylene (PP), Polyethylene (PE - including HDPE, LDPE), Thermoplastic Elastomers (TPEs), and Thermoplastic Olefins (TPOs).
- Secondary: Can also bond the LSE plastics above to other materials like Fiber Reinforced Plastic (FRP), PVC, Polycarbonate, ABS, Wood, and Metals.
- Not Recommended For: Nylons, PTFE, silicone, or surfaces with heavy mold release agents.

Cure Information
- Mix Ratio: 10:1 by volume
- Work Life (Open Time): 2.5 - 3 minutes
- Time to Handling Strength: 2 - 3 hours at room temperature.
- Full Cure: 8 - 24 hours at room temperature.
- Cure can be accelerated by applying mild heat (e.g., 150-175 F / 66-80 C) after parts are fixtured.

Known backups / known substitutes for this product
- 3M Scotch-Weld DP8010 Blue Structural Plastic Adhesive
- Maven MMA8005

Comparison Note
- 3M DP8005, in both Off-White and Black versions, and Maven MMA8005 are functionally very similar. They are all two-part methacrylate adhesives designed to bond low-surface-energy plastics without primers. They share a fast work life (2-5 minutes) and similar cure profiles. 3M DP8010 is also a suitable alternative but offers a longer work life of around 8-10 minutes, which can be beneficial for larger or more complex assemblies.