L&L Products Announces an Innovative New Approach to Structural Bonding

06 March 2019

The use of structural adhesives has significantly increased in recent years along with the use of composites and combinations of different materials to create lightweight components.

Bond designs for these lightweight constructions become more complex and sometimes designers cannot avoid undesirable peel forces.

L&L Products has found a solution, and we are proud to announce our upcoming portfolio of acrylic-based structural adhesives with versions capable of peel resistance higher than 14 N/mm without sacrificing strength, elongation or modulus.

L&L Bond A-K321 and A-K322 will be fast-curing two-component toughened structural adhesives acrylic-based and will provide primerless adhesion to most metals, thermoplastics and composites.

The ratio between working time & fixture time has been optimised versus other acrylic-based systems minimising cycle times.

These products do not boil at higher bonding gaps - an ideal solution for repair or backfill of large composite structures.

Due to their low odour, these products can be used in metal-working shops and other places where the typical distinctive odour is restricted.  

L&L Bond A-K321 & A-K322 will be 10:1 mix-ratio, thixotropic adhesives that also create value due to fast-mixing and rapid extrusion without sacrificing a combination of significant non-sag properties:

  • Working time to Fixture time ratio: 5-9 minutes for A-K321 & 15-27 minutes for A-K322  
  • Gap-fill without boiling >75 mm
  • Ultra low odor
  • High Elongation – approx. 90%
  • High T-Peel strength – approx. 14 N/mm
  • High shear strength :> 18 MPa

More information about the products, and their upcoming availability for the European market, will be available at JEC March 2019.

L&L Products is a technology driven business-to-business company with unique expertise in static sealing, acoustics, vibration reduction, structural reinforcements and composite components for automotive, aerospace, commercial vehicle and other industrial applications.

At the heart of the organisation are our people, who focus on what is important to the customer.  L&L Products is a reliable partner that provides value to its customers with material science, superior engineering, custom service and manufacturing expertise.

With production facilities in the USA, Europe, China, India, Turkey, and Brazil, plus strategically located operating subsidiaries, we are well positioned to provide local support to our global customer base. Currently we ship product to 37 countries and have more than 1300 employees worldwide.

If you would like more information about this topic, please contact Erwin de Leeuw at or +49 152 288 044 94.

Visit L&L Products in Hall 6, Stand R27 at JEC World 2019.

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