Coating & Laminating
Smooth converting by design: why silicone release coatings really matter
By Sébastien Marrot, product manager, silicone release coatings and pressure-sensitive adhesives, Elkem Silicones
to separate cleanly from the liner while maintaining liner integrity. Matrix stripping efficiency is directly linked to the release dynamics during peeling. Engineered silicone formulations can be tuned to achieve the right balance between low and controlled release levels, ensuring that the matrix lifts predictably every time, even with complex label shapes or at multiple machine speeds.
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n label manufacturing, silicone release coatings play a discreet yet essential role in ensuring that every stage of the process runs with control, fluidity and consistency. Their contribution begins at the earliest coating step and extends through printing, die-cutting, matrix removal, slitting and final application. When properly engineered, silicone systems deliver robustness for reliable converting.
BUILDING PRINT-READY LAMINATES To ensure flawless performance during downstream printing and converting, release liners and label laminates must be manufactured with high precision and control. This begins with perfect silicone coverage, free of pinholes, complete cure and strong anchorage to the backing substrate. Careful control of misting at the coating head, combined with a well-crosslinked silicone network, helps prevent transfer to the liner backside and subsequently to the facestock, thereby avoiding cross-contamination during printing. Controlling the correct coatweight across the web is equally important to achieve predictable release values. During winding and storage, the liner or laminate must remain dimensionally stable, with no blocking, curl or telescoping.
Siliconecoated liners are essential to achieving expected printing conditions
because they help ensure that the label laminate enters the press with the right dimensional stability, planarity and surface uniformity. When the silicone layer is perfectly coated, free from defects such as orange peel, pinholes or thickness variations, it preserves the integrity of the adhesive and facestock. Print quality also depends on the construction of the laminate itself. A uniform adhesive layer, combined with lamination free of air bubbles or voids, ensures that the facestock remains flat throughout printing. All these parameters contribute to a clean printable surface, enabling consistent ink transfer and sharp image formation.
SUPPORTING SMOOTH CONVERTING Silicone, engineered for the adhesive it partners with, provides the support needed for die-cutting performance. When silicone, adhesive and facestock are harmonised, converters achieve smoother cutting, longer die life and fewer interruptions. The uniformity of the silicone coating, combined with its mechanical resilience, helps ensure that even intricate shapes are cut cleanly. This stability is fundamental for achieving high-definition label shapes and maintaining consistency across long production runs.
Right after the die-cutting step, silicone provides release levels that allow the matrix
At different converting steps, the web also enters slitting, where precise cutting and clean edges are necessary for high-quality rolls. After matrix stripping, the performance of the silicone coating, especially its anchorage to the substrate, is critical. A well-anchored silicone layer stays bonded during high-speed slitting, preventing rub-off and avoiding knife contamination that causes blade buildup, uneven cuts, web tearing and cleaning stops.
ENSURING PRECISE DISPENSING At the final dispensing step, the performance of the silicone coating remains key. As the label approaches the peel plate or beak of the applicator, the liner must release it cleanly and with a predictable, controlled force. A well-engineered silicone formulation ensures accurate placement, prevents mis-dispense or flagging and supports the high speeds of modern automated labeling equipment. Silicones designed for long-term stability help maintain the adhesive’s intended tack and adhesion performance throughout storage and use, ensuring labels apply securely and efficiently from the first to the last.
CONCLUSION
Silicone release coatings are more than a hidden layer in label manufacturing. When well designed and properly applied, they become a key enabler of smooth converting, supporting everything from lamination and printing to diecutting, matrix stripping and dispensing. By understanding and leveraging silicone chemistry, silicone suppliers help converters gain higher productivity, more reliable performance and predictable converting process, turning silicone release coatings into a strategic asset for modern label manufacturing.
18
March 2026
www.convertermag.com
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