Anilox Two Tone

ANILOX LASER TWO TONE

The Laser Two Tone has it´s fifteenth anniversary next month and is marked by over fifteen thousand roll installations world wide, which indicates the on going success of this unique cell structure.

BEL’S laser methodology has opened up a new perspective for flexography. The LTT gives a predetermined volume of ink with double the number cells on the Anilox roller to the printing plate. The LTT therefore provides an even coat weight of ink with superior control for combination printing.

The fundamental difference lies in the approach. The LTT rollers are laser engraved with a different cell formation to that of conventional methods. Two different cell sizes are engraved adjacent to each other with different depth and surface technology.

Within this structure the ink transfer occurs unaided as a coating from the cells. The LTT laser engraving technique thereby makes use of the laws of physics which states that a large drop of ink has a different surface tension to a smaller adjacent drop. This is where the LTT strength lies. When the surface is covered evenly, the smaller ink droplets flow more easily into the larger ones. This process does not work as well when the droplets are the same size, as they are with the regular 60 degree cell engraving.

Two Tone cells have a small and large cellular designed for consistent beneficial control of the ink flow to the plate. The roller has the ability to carry volume even when it is worn. Land around the cell doesn’t increase as dramatically than with the normal 60 degree cell engraving. As the roller is wearing, the unique structure carries on feeding the plate with ink throughout its life span, presenting generous superior qualities for longer.

As the cell wall wears with a standard 60 degree angle engraving, the land around the cell gradually increases in size, making the cell smaller thus reducing the volume carried. Therefore the colour reduction may occur more quickly than expected resulting in modest amounts of density being applied to the plate and a significant reduction in print quality.

The laser Two Tone is therefore, without doubt a far superior product providing advanced surface technology for combination printing.

LTT 500 L/in, 200 L/cm at a volume between 10 and 12 VOLcm³/m²

Solid Type Tone Clean

The two tone roll can handle a range of tones as well as holding a solid. The dot formation is consistent and razor sharp from the brightest highlights to the deepest shadows.

Increasing the resolution of the screen count and maintaining a predetermined volume of ink enhances the print quality and improves definition.

As these examples show the two tone rolls are suitable for a range of print surfaces. Whether it’s corrugated, paper, plastic films, foil or tissue the two tone anilox roller is guaranteed to impress.