Imerys has developed new water-based barrier coatings using novel kaolins as part of the BARRISURF™ product line. These hyper-platy crystals create a tortuous path for moisture, oil, grease and oxygen transmission.
With the rising cost of polymers, incorporating Imerys BARRISURF™ kaolins in a formulation is a cost effective route to deliver superior barrier performance.
arrowMoisture resistance (water or vapour);
corrugated cases, multi-wall sacks, folding cartons, liquid containers
arrowOil and grease resistant;Packaging product treated with a water based barrier coating
corrugated cases, bags, folding cartons, fast food applications
food packaging, (gas barrier ie Oxygen, Nitrogen, Carbon dioxide, or microorganism barrier)
The concept of water based barrier coatings is straightforward – they keep contents in, the external atmosphere out, and help maintain the strength of paper and board packaging by preventing moisture / grease absorbtion.Water based barrier coatings are water-based dispersions of film-forming polymer(s), additives and pigments.
The advantages of using pigment-filled water-based barrier coatings compared with unfilled coatings are improvements in barrier properties, optical properties, runnability, blocking resistance, and cost effectiveness.
Water-based barrier coatings give useful properties when applied to paper and paperboard. These properties and end uses that can benefit from them