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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) 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 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


Strength

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

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

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

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

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

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

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

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

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

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

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  • 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.


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3M™ Scotch-Weld™ PUR Adhesives in Action

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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.

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