Comexi Laser: key technology that makes the difference and optimizes production

Control, precision and speed define this tool that adapts, differentiates and performs a wide range of applications and finishes

Girona .- Comexi, a specialist in solutions for the flexible packaging printing and converting industry, has always been at the forefront of converting equipment manufacturers due to the company’s global vision for the entire printing and converting process. In addition, the company has acquired profound market knowledge and expertise since 1954. Aiming to stay at the forefront of converter requirements, Comexi has not only identified future trends and needs, but has also started developing solutions that will greatly support converters in the years to come.

Comexi Laser is the integrated solution that makes the difference, the revolution of the flexible packaging industry. This innovative tool fits, differentiates and simultaneously performs a wide range of applications and finishings including: micro-perforations, macro-perforations, design windows, pre-cut adhesive labels, alphanumeric codes, barcodes, security systems and easy-open applications. All this is possible with just one device, the Comexi Laser.

Packers have long incorporated lasers into their machines, only to find that after using them, the packers’ efficiency decreases. For this reason, the preference is to eliminate this process step and give processors the possibility to work with lasers, which has led to an increasing demand for such solutions.

The Comexi laser system has several patents, including one for voltage control and another for double-sided lasering without a turner bar. The stress control patent ensures the flatness of the material throughout the scribing process, which is imperative when material penetration of a layer is required while maintaining an intact barrier layer. The double-side laser patent allows lasering on both sides of the material in the same pass without the use of a turner bar, which would drastically reduce the machine’s performance.

Comexi’s solution for removable labels
Converters want a removable label solution for single dose or fast food products such as snacks or chocolate. Their goal is to be able to eliminate the zipper, which offers long-term benefits but also comes with high costs and a more complex manufacturing process. In addition, it is the intention of converters to obtain packaging with reclosable features.

The current process for manufacturing resealable packaging involves a label inserter and a die-cutting machine. The packaging has a process that starts with the application of the label, followed by the die-cutting of the desired shape. This method is extremely inefficient, since die-cutting machines are predominantly limited in width when used with larger widths due to the deflection of the die-cutting rolls. Consequently, the performance of the whole processing line is low; Adding a label and die-cutting is a process that is done after cutting. This extra step and process increases packaging costs. Also, die rolls must be changed for each application, which severely limits the flexibility needed for promotions. The die-cutting process is unable to accurately control the depth of cut, which constantly destroys the barrier (there is a high risk of damaging the label if the depth of cut is not controlled).

Nevertheless, the system laser + inline labeling + cutting system in which Comexi excels offers several advantages, including: extreme precision (regardless of the thickness of the material, penetrating only the necessary layers of packaging and ensuring the packaging barriers remain until opened by the end customer closed); the use of embedded laser system software that changes the design shape in minutes (requires no punch dies and offers the ability to use multiple laser heads to simultaneously scribe all sides of the web, dramatically increasing productivity).

With the use of Comexi laser systems, a whole new level of high value-added applications can currently be achieved, increasing the usability of flexible packaging exponentially


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