LAMAL™ 408-40

Lamal™ 408-40 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™ CR-1-80, functions as an adhesive for flexible packaging. Lamal™ 408-40 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™ 408-40 adhesive is achieved when substrates are corona treated.

Features & Benefits

Lamal™ 408-40 adhesive is different from most conventional polyurethane adhesives in that it is not affected by alcohols or small amounts of water. Lamal™ 408-40 adhesive provides optical clarity, high bond strength, high heat resistance and moderate chemical resistance.

Key Properties

Application Method
Coating Weight
1.2-1.7 lbs/ream
Denatured Ethanol
Polyether Urethane
Colorless to Light Yellow Liquid
7.9 lbs/gallon
Mix Ratio
100:7.5 for Lamal C, 100:9.5 for Lamal CR 1-80
Recommended Diluent
Isopropanol, Denatured Ethanol
Drying Web Temperature
150-180 °F
Key Performance Benefits
Great clarity, good for solvent sensitive films, great clarity
Shelf Life
180 days
Applied Solids
20-30 %
Supplied Solids
65 %
Denatured Ethanol
iso-Propanol, Denatured Alcohol
Cure Time
5 days @ Room Temperature
Mixed Viscosity
11,000 cPs
Nip Temperature
120-150 °F
Nominal Application Temperature
Room Temperature
Post Process Time
12-24 hours time to slit
Pot Life
> 8 hours
PE, PP, PET, PVDC-coated substrates, Paper, Nylon, Cellophane, PVC
10,000 cPs

Technical 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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