LAMAL HSA

Lamal™ HSA adhesive is the polyether urethane component of a two-component laminating adhesive which requires the use of a coreactant. This polyether urethane, in conjunction with coreactant Lamal C or Lamal CR1-80, functions as an adhesive for flexible packaging. Lamal HSA adhesive is different from most conventional polyurethane adhesives in that it is not affected by alcohols or small amounts of water.  Lamal HSA adhesive adheres to a wide variety of substrates including cellophane, treated polyolefins, paper, polyester, polyamides, PVDC-coated and metallized materials, vinyl, and treated heat sealable layers of coextrusions. The optimum performance of the Lamal HSA adhesive is achieved when substrates are corona treated.

Features & Benefits

Lamal™ HSA adhesive provides optical clarity, high bond strength, high heat resistance, and moderate chemical resistance. The admixed Lamal HSA adhesive is unaffected by high humidity and temperature other than by the normal loss of solvent by evaporation.

Key Properties

Application Method
Gravure
Coreactant
LAMAL C, LAMAL CR1-80
Coating Weight
1.2-1.7 lbs/ream
Carrier
Ethanol
Chemistry
Polyether Urethane
Color
Colorless to Light Yellow Liquid
Density
8.15 lbs/gallon
Mix Ratio
100:12.5 with Lamal C, 100:15 with Lamal CR1-80
Recommended Diluent
iso-Propanol, Denatured Ethanol
Drying Web Temperature
150-180 °F
Key Performance Benefits
Low nipping, low odor, not effected by ink alcohols
Shelf Life
365 days
Applied Solids
20-30 %
Supplied Solids
70 %
Solvent
Ethanol
Thinner
iso-Propanol, Denatured Alcohol
Cure Time
5 days @ Room Temperature
Mixed Viscosity
9,500 cPs
Nip Temperature
120-150 °F
Nominal Application Temperature
Room Temperature
Post Process Time
12-24 hours @ 70 °F for slitting/rewinding
Pot Life
> 8 hours
Substrates
PE, PP, Coex lms, PET, PVDC-coated substrates, Paper, Nylon, Cellophane, PVC
Viscosity
9,500 cPs

Techincal Resources

The Importance of Quality Control Testing By being diligent in recording and monitoring tests for each laminated structure many potential laminate problems can be averted. Read More...
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