Using 3M™ Scotch-Weld™ structural adhesives in place of mechanical fasteners gives you more design flexibility and provides many benefits to your production process. There are four main adhesive chemistries suitable for replacing traditional joining methods. Acrylic adhesives are best used for bonding metal and plastics while providing high impact resistance. Epoxy adhesives are the most flexible, offering superior vibration and environmental resistance compared to other chemistries. Urethanes offer quick cure speeds and are best for bonding dissimilar materials. Cyanoacrylate instant adhesives bond to the widest range of substrates, come in a variety of viscosities, and have the fastest cure speeds.
When choosing your adhesive there are many factors to consider such as what substrates are being bonded, cure speed desired, type of joint, stresses, and how the adhesive will be applied.
Benefits of Structural Adhesives
High strength, flexible bonds
Reduce labor and increase productivity
Easy and accurate dispensing
Plastic, paints, and coatings
Concrete, ceramic, and glass
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Used for bonding low surface energy plastics, metals, and replacing welding, screws, and rivets.
Epoxies offer high shear strength, flowability and environmental resistance when bonding metals and plastics.
These cyanoacrylates have very fast setting times and are used for bonding metal, rubber, and plastics.
Used for bonding to painted or primed metals and plastics while offering impact resistance and non-sagging properties.
3M Dispensing Equipment
3M offers both manual and pneumatic hand-held dispensers for low to high volume applications. They can be used with 37 mL up to 490 mL cartridges with mix ratios of 1:1, 2:1, 2:3, and 10:1. Various static mixing nozzles are also available.