OK

Materials Formulation Requirements for WB Folding Carton Inks

Materials Formulation Requirements for WB Folding Carton Inks

Folding cartons are used to pack a wide range of end products, from soft drink beverages to cigarettes and tobacco. They are typically printed by gravure andflexography and utilize multiple colors and overprint varnishes.

Inks for folding cartons need to be formulated with moderately high gloss and good surface rub resistance. Specific modifications to these ink formulations include:

  • The modification to C.O.F. (slip) values,
  • Product resistance (water, alcohol, detergent etc.), and
  • Heat resistance

In general, increase in wax levels increases rub resistance and slip values (lowers C.O.F.). Waxes can also have an impact on other surface properties like water and soap resistance.


Common Types of Folding Carton Material


Typical substrates for folding cartons include paperboard and small flute corrugate Solid Bleached Sulfate (SBS). Main types include:

  • SBS is a bleached paperboard made from mostly virgin bleached wood pulp
  • SBS Kaolin Coated Kaolin/2-sided Kaolin is a clay coated board
  • CUK (CNK/SUS) chemically bleached with a Kraft back
  • Polyethylene (PE) resin coated SBS board
  • Uncoated Recycled Paperboard made from 100% recycled paper
  • Coated Recycled Paperboard made from 100% recycled paper with a kaolin clay coating

Tobacco Packaging


Packaging for cigarettes and tobacco require strict monitoring of the resins and additives that go into the ink formulations, particularly because raw materials can leave residual odors which can penetrate through the packaging and into the product. With this in mind it is possible to select key raw materials which are formulated with low residual odor and "cleaner" content.

Now, let’s see what are the main type of raw materials used to formulate inks for folding cartons & various factors which should be considered while selecting them.;

Common Additives Used in Water Based Folding Carton Inks

Role of Resins in Water Based Folding Carton Inks

Back to Top