HVS - Miller Graphics Group€¦ · Fig.1 An example of a HVS engraving This incredibly open cell allows for the best possible ink release and good lay down of ink due to its smooth

.More Than Anilox

HVS (Flexible Packaging)Heavy Solid and Coat Weight Engraving

High coat weights and deposits of ink

Efficient and consistent ink / coating application

Avoid cell blocking with large coating particles

Easier cleaning than conventional engravings

Confident volume / coat weight prediction with Sandon Global COCAL formula

Runcorn, CheshireWA7 1SR

7 Boleyn CourtManor Park .More Than Aniloxt: +44 (0) 1928 579774

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The HVS engraving was designed specifically in order to enable heavy coat weights of adhesives, metallics, varnishes, special applications and large deposits of ink to be applied efficiently and consistently. The engraving has a unique design with raised peaks that support the doctor blade allowing ink to flow without any restriction between them.

Fig.1 An example of a HVS engraving

This incredibly open cell allows for the best possible ink release and good lay down of ink due to its smooth and regular format allowing a completely even ink spread onto the printing plate. This will help remove issues such as pin-holing and reticulation of ink.

One of the key issues with printing special applications is the size of particles within the material. A regular issue with using conventional engravings to print these coarse coatings is evacuating their large particles from the cell. Often large particles will become blocked in cell designs or not even fit within the cells making it impossible to get the coat weight or optical density required. The HVS engraving because of its open nature allows these large particles to flow fluidly between the cells and to release onto the printing plate instead of trapping in an enclosed cell. These characteristics make the HVS the ideal engraving for these difficult applications.

The open nature of the HVS engraving makes it far easier to clean than traditional cell based anilox as there is no place for the coating to trap. This is particularly important when considering the complex nature of many coatings. It is therefore an important design aspect of HVS engravings that they can be easily cleaned in order to maintain crucial coat weights.

Fig.2 A coating flowing through the HVS engraving in comparison to it blocking in conventional engraving.

Sandon Global are vastly experienced in predicting dry coat weights for use with our HVS engraving. We do this through our specialised coat weight predictor called ‘COCAL.’ It is crucial when considering coating applications that they achieve a specific dry coat weight (g/m²) on varying substrates. By applying our mathematical ‘COCAL’ formula to the applicable data we are able to confidently determine an accurate volume (cm³/m²) for the HVS engraving required.

We have experience with many companies who have made major savings by utilising the Sandon Global predictive ‘COCAL’ calculator far reducing their annual spend on lacquers and anti mist etc. Achieving the correct dry coat weight (g/m²) time after time not only improves our customers product efficiency and performance but enhances print quality and ultimately improves profitability.

HVS (Flexible Packaging)Heavy Solid and Coat Weight Engraving

HVS

Fig.2Fig.1

Ink/coating particles flowing between peaks

Fig.2.1 Fig.2.2

Large ink/coating particlessitting on top of cell walls