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  POLAQUA 138
Aqueous Primer
Polaqua 138 is a water-based primer specifically developed for water resistant bonds of polyethylene to aluminum foil by lamination or extrusion. It is applied by conventional application methods (gravure, flexo, roll, roll, etc.) to the accepting substrate. The primer must be thoroughly and absolutely dry before introduction of the extrudate or lamination. Polaqua 138 should be applied as received using light application weights.

Standard extrusion temperatures are suitable for acceptable bonding. In lamination it is necessary to hot-nip at a minimum of 180 degrees F. Excellent bond strengths will be achieved off-machine with full product resistance properties developed after time.

Polaqua 138 is suitable for combinations of LDPE or Surlyn to aluminum foil. Acceptable combinations of EVA to foil and polyester have been achieved.
TYPICAL PROPERTIES  
Appearance Yellow Liquid
pH 8.95
Wt./Gal. 8.29 lbs.
Visocity Brookfield LVT, Spindle 1
77 degrees F. 60 rpm - 6.2 cps
  Zahn Cup #2 - 15 sec
Solids 15%
 

Polaqua 138 is formulated from ingredients cleared by the FDA for food packaging applications. It is water-based and complies with the strictest EPA or OSHA restrictions.

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