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  5. PUR Adhesives
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Hero image of the 3M Trifecta and the PUR adhesive chemical breakdown using our structural Adhesive benefits

PUR Adhesives

Three features to love: one-part application, rapid handling strength and high final strength.

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The strength of a structural adhesive with the speed of a hot melt

  • Polyurethane reactive adhesives (PUR adhesives; also called reactive hot melts, reactive polyurethanes or RPU adhesives) are one-part formulations that combine the initial speed of a hot melt adhesive with the strength of a structural adhesive. The bond forms in two stages: when the adhesive cools back down and solidifies like a hot melt it reaches holding strength, then the moisture-curing reaction proceeds over the next 24-48 hours to reach final structural strength. These adhesives are resistant to temperature extremes and flexible to provide vibration and impact resistance.

    3M™ Scotch-Weld™ PUR Adhesives have a range of open times that can be adjusted to suit your process, and they have low to no Volatile Organic Compounds (VOCs). These adhesives bond well to metals, glass, ceramics, wood and some plastics such as polystyrene and polyacrylic. The combination of no-mix one-part application, rapid handling strength and high final strength makes PUR adhesives excellent candidates to help improve throughput and reduce processing time.

  • Discover the Important Attributes of PUR Adhesives

    Hotspot selector of PUR Epoxy attributes
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Strength

After cooling, PUR adhesives use ambient moisture to continue curing for hours to days while increasing in strength

Bonding

PUR adhesives are excellent for bonding materials such as wood or plastic to themselves or to glass or metal

Process Efficiency

Applied as a hot melt, PUR adhesives rapidly cool down to handling strength so they can be moved to the next station

Impact Resistance

Depending on the chemistry, structural adhesive bonds provide the strength or flexibility to resist shock, vibration and impact loads

Lightweighting

Adhering to new materials and distributing stress along the entire bond area helps designers use thinner and lighter materials

NVH

Stiff bonds resist vibration and reduce opportunities for loose parts to make unwanted noise

Aesthetics

Structural adhesives provide better product appearance through invisible joints and smooth bond lines

Water Intrusion

Structural adhesives provide a continuous bond line to prevent the migration of fluids, dust and dirt

Innovation in Design

The ability of structural adhesives to bond a wide variety of substrates allows the freedom to design for the best materials available

  • 3M™ Scotch-Weld™ PUR Adhesive TE031
  • Explore PUR Adhesive Products

    3M PUR structural adhesives offer a range of open times and low to no VOCs. Specific formulations pair well with metals, glass, ceramics, wood and some plastics. Explore the options to find the best fit for your product and process.

Learn More About 3M™ Scotch-Weld™ PUR Adhesives

  • Video still of two different tubes of 3M™ Scotch-Weld™ PUR Adhesive with the caption “Open times range from 1-10 minutes”
    PUR Adhesive Introduction Video (2:05)

    See how 3M™ Scotch-Weld™ PUR Adhesives combine the speed of hot melt adhesives with the strength of structural adhesives to deliver fast, strong, secure bonds in a one-part formulation.

  • Video still of the engineer with the caption “Caution: Ensure one of your substrates is water permeable (no metal-to-metal)
    Dos and Don’ts of PUR Adhesive Dispensing (1:44)

    A 3M Senior Application Engineer provides tips for dispensing 3M™ Scotch-Weld™ PUR Adhesives along with when and why they’re a good solution.

  • Video still showing application to wood with the caption “Larger bead will have longer open time”
    3M™ Scotch-Weld™ PUR Adhesive Demonstration (3:39)

    A 3M Senior Application Engineer demonstrates bonding with 3M™ Scotch-Weld™ PUR Adhesives in wood-to-wood, glass-to-plastic, plastic-to-metal and wood-to-metal applications.

Featured PUR Adhesive Products

  • 3M™ Scotch-Weld™ PUR Adhesive TE100
    3M™ Scotch-Weld™ PUR Adhesive TE100

    • View product details

      With an extremely fast set time, TE100 is ideal for attaching wood or plastic. Use for adhering edge molding and trim for countertops, for tables, shelving and desks, drawer bottoms, backs and facings—almost any furniture or cabinetry job. TE100 is effective across a wide range of temperatures and offers a 120-second open time for positioning followed by 60 seconds to reach handling strength.
       

      • 60-second set time for fast-paced processes and productivity
      • 120-second open time for joining parts
      • Creates high-strength bonds that are plasticizer resistant
      • Professional grade adhesive for bonding wood and many plastics
      • Contains UV dye to easily inspect the bond line with a black light
      • Creates very thin bond lines (0.001" to 0.003") on wood
      • Designed for use with the 3M™ Scotch-Weld™ PUR Applicator and unique disposable nozzles
    • 3M™ Scotch-Weld™ PUR Adhesive TE100
  • 3M™ Scotch-Weld™ PUR Adhesive TS230
    3M™ Scotch-Weld™ PUR Adhesive TS230

    • View product details

      3M™ Scotch-Weld PUR Adhesive TS230 is ideal for bonding a variety of materials including wood, ABS, PC, polyacrylic, polypropylene, polyethylene, composites, aluminum, and glass. Use for woodworking, automotive interiors, appliances, electronics, and general assembly. This one-component adhesive requires little to no clamping or fixturing, offers a four-minute open time for positioning followed by 150 seconds to reach handling strength.
       

      • 150-second set time for fast-paced processes and productivity
      • 4-minute open time for joining parts
      • Creates high-strength bonds that are plasticizer resistant
      • Professional grade adhesive for bonding a variety of materials, including wood, plastics, glass and metal
      • Can be sprayed or roll-coated onto surfaces
      • Designed for use with the 3M™ Scotch-Weld™ PUR Applicator and unique disposable nozzles
    • 3M™ Scotch-Weld™ PUR Adhesive TS230
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Need help finding the right product for your project? Contact us if you need product, technical or application advice or want to collaborate with a 3M technical specialist, or give us a call at 1-800-831-0658.

Need help finding the right product for your project? Contact us if you need product, technical or application advice or want to collaborate with a 3M technical specialist, or give us a call at 1-800-831-0658.

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