Functional Fillers for Paper

The need for improved cost efficiency in the paper industry manifests itself in the movement towards lower basis weights and an increasing use of recycled fiber.

In addition, higher standards are required for both optical properties and for the ability of the paper to absorb high amounts of printing ink due to the increased popularity of four-color printing.

To produce paper that can meet these demands, producers add functional fillers that can create micro-pores in the sheet.

Grace DURAFILL^® functional filler has a high level of whiteness and large internal porosity. DURAFILL^® silicate has a high specific surface area and a relatively large particle size.

It is widely used in areas such as

• Magazine papers
• Packaging board
• Decorative paper