LAMAL™ 408-40 is the urethane component of a two part laminating adhesive system for flexible packaging. It is unaffected by high humidity and temperature.
LAMAL™ 408-40 is a polyether urethane in denatured alcohol. It is used in combination with LAMAL™ C or LAMAL CR-1-80 as the urethane component of a two part adhesive system for flexible packaging. The mix ratio varies based on application but it typically in the range of 7.5-9.5 parts coreactant to 100 parts adhesive. The LAMAL™ 408-40 adhesive system exhibits excellent adhesion to common packaging films including polyethylene, polypropylene, PET, paper, cellophane, and PVC. LAMAL™ 408-40 is unique in that unlike other polyurethane adhesives, it is unaffected by alcohol or small amounts of water. This makes it ideally suited for packaging applications that need to withstand high humidity environments. LAMAL™ 408-40 is most commonly used in laminations for cosmetic packaging, snack food packaging, meat packaging, and shrink labels. It provides great clarity, fast bond development, high shear strength, and it can be slit in 12-24 hours post processing.
Solids: 65%
Viscosity at 25°C: 10,000 cps
Weight/Gallon 7.9 lb
Solvent: Denatured Ethanol
Mix Ratio: 100 pbw
Diluents: Isopropanol, Denatured Ethanol
Shelf Life: 180 days
Primary Chemistry: Polyether Urethane
Not affected by alcohols nor small amounts of water
Optical clarity
High bond strength
High heat resistance
Failure of adhesive bonds in flexible packaging due to humidity and heat
Flexible Packaging; Cosmetic Packaging; Shrink Labels
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