Weber Etiketten optimizes automated logistics with ECO series of direct thermal labels with permanent adhesive

The development of modern logistical lines often encounters one unexpected challenge – the physical capability of the label to contain a clear print. In non-top-coated direct thermal printing, the porosity of the paper becomes a major source of issues as it allows heat to dissipate laterally and blur the boundaries of the barcode. As part of the international entity Bluhm Weber Group, Weber Etiketten Bulgaria offers solutions regarding this problem with the series of thermal direct ECO labels with permanent adhesive, relying on increased surface density of the material. By reducing so-called lateral diffusion (lateral heat dissipation), the materials ensures clarity of the symbols even during speeds of 250 mm/s, which is the basis for hassle free work of the automated scanners. "In automated marking systems, the label is a supporting component of the information chain. Any inaccuracy in the microstructure of the paper can lead to defects in the barcode, which industrial scanners cannot ignore, especially at high work rates," Weber Etiketten commented to BalkanEngineer.com.

The ECO series similar to that of Weber Etiketten Bulgaria, solve problems through precise calendering – a process that involves pressing the paper between heavy rollers under high pressure. This way, micropores are mechanically closed and surface smoothness is increased.  By "sealing" the surface, two additional engineering effects are achieved:

• Thermal Barrier: Heat remains in the top layer of the label, activating the dye immediately and with minimal energy.
• Geometric Definition: Lateral diffusion is minimized, ensuring that each module (code square) maintains its exact dimensions and sharp edges.

"This control over the physics of the material allows ECO labels to maintain a stable Class A or B according to the ISO standard, which guarantees a successful first-time read, regardless of conveyor speed," the company explained.

Photo source: Weber Etiketten Bulgaria, Weber Marking Systems