Barrier Performance
A specialized paraffin blend applied to paperboard substrates provides high moisture vapour transmission resistance for packaging applications. Converted folding cartons receive db-wax during extrusion lamination or curtain coating operations to prevent grease migration through structural creases. Packaging engineers specify this treatment when shelf life demands absolute containment of fatty acids and aqueous fluids.
Temperature fluctuations on retail shelves challenge lesser coatings, yet this petroleum derivative maintains flexibility without cracking along crease lines.
Coating Weight
Thermal stability governs the deposition threshold during high speed web application processes. Excess material increases production costs while thin coverage fails grease resistance tests administered by quality laboratories. Converters measure this parameter in grams per square meter to verify uniformity across wide rolls destined for food cartons.
Solid board thickness determines cooling rates on chill rolls after the liquid compound touches the paper surface.
Surface Friction
Slip characteristics influence how stacked blanks feed into automatic carton forming machinery at high speeds. Low resistance causes pallets to slide during transit while high traction jams high speed vacuum feeders. Coated folding lines require precise friction coefficients to balance stacking stability with smooth mechanical handling.
Wax migration into porous fibers alters tactile properties if temperature controls fail during warehouse storage.
