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Bonding Low & High Density Polyethylene with Industrial Adhesives

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Bonding Low & High Density Polyethylene with Industrial Adhesives

 

How to bond polyethylene (LDPE, HDPE, and UHMW).  Polyethylene is abbreviated as PE. Low density polyethylene is LDPE and HDPE for high-density Polyethylene.  UHMW stands for Ultra High Molecular Weight polyethylene.  Polyethylene is a thermoplastic material which can be challenging to bond.  Some form of surface preparation is needed to achieve significant bond strength on polyethylene with most adhesives.

Structural Acrylics

Permabond has developed a line of specialty acrylic adhesives that form strong bonds to polyethylene without surface treatment or primer.

Permabond TA4605, TA4610, TA4611, and TA4631

  • Bond low surface energy plastics
  • No need to flame, corona, or plasma treat surfaces
  • Easy 1:1 mix ratio
  • Non-hazardous for transport
  • Ideal for bonding a wide range of surfaces
  • Easy dispensing
  • Full cure at room temperature
  • Good chemical resistance
  • Good impact strength

TA46xx chart

 

These structural acrylics have good impact resistance and environmental resistance.  If you require a strong HDPE glue for a rugged application, this is the best option.  Download the flyer!

Cyanoacrylates

Cyanoacrylate adhesives can be used along with primer Permabond POP.  Cyanacrylates set almost instantly and provide good adhesion to HDPE provided the surface is pre-treated with Permabond POP primer.  The bonds have good resistance to non-polar solvents but do not fair as well with polar solvents.  Standard ethyl cyanoacrylates are brittle and do not have good impact resistance.  If impact resistance is needed contact Permabond about Flexible Cyanoacrylates.

Epoxy and UV Curable

Providing some form of surface treatment such as flame, corona, or plasma treatment used epoxy and UV grades can be tested.  Flexible epoxy such as Permabond ET515 is preferred.

 

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