Eliminating Hot-Melt Challenges in Can Labeling: Best Practices and Adhesives (ThermoGrip 1926A)
- May 4
- 3 min read
In high-speed can labeling operations, hot-melt adhesives play a critical role in ensuring label accuracy, durability, and production efficiency. However, manufacturers frequently encounter challenges such as poor adhesion, stringing, char buildup, inconsistent tack, and downtime due to maintenance issues.
Addressing these challenges requires not only optimized process control but also the selection of the right adhesive formulation such as ThermoGrip 1926A, a proven solution for roll-through can labeling applications.
This article explores common hot-melt challenges in can labeling and outlines best practices to overcome them, with a focus on how advanced adhesives can significantly improve performance.
Understanding Common Hot-Melt Challenges in Can Labeling
1. Inconsistent Adhesion and Label Pick-Up
One of the most frequent issues in can labeling is inconsistent label pick-up, which can lead to misaligned or rejected products. This often stems from insufficient tack or poor wetting of the adhesive on the label substrate.
Hot-melt adhesives must deliver instant tack and maintain bonding strength throughout the labeling process. ThermoGrip 1926A addresses this with its aggressive hot tack, ensuring reliable label pick-up even in high-speed environments.
2. Stringing and Adhesive Waste
Stringing occurs when adhesive forms thin strands during application, leading to contamination, machine fouling, and material waste. This is typically caused by improper viscosity or incorrect application temperature.
Maintaining proper adhesive viscosity and selecting a formulation with stable flow characteristics is key. ThermoGrip 1926A offers controlled viscosity across a recommended temperature range of 225–275°F, helping minimize stringing while maintaining consistent application.
3. Thermal Degradation and Char Formation
Extended exposure to high temperatures in open pot systems can cause adhesive degradation, resulting in char formation. This not only reduces adhesive performance but also increases maintenance requirements.
A high-quality adhesive with excellent thermal stability is essential. ThermoGrip 1926A is engineered for open pot applications, maintaining stability and reducing the risk of charring during prolonged use.
4. Odor and Workplace Conditions
Traditional hot-melt adhesives can produce strong odors, affecting operator comfort and compliance with workplace standards.
Modern formulations like ThermoGrip 1926A feature lower odor profiles, contributing to a safer and more comfortable working environment without compromising performance.
5. Supply Chain and Material Consistency
Inconsistent raw material availability can disrupt production and lead to variability in adhesive performance.
ThermoGrip 1926A is formulated with an alternative raw material slate, ensuring reliable supply and consistent quality, an increasingly important factor in today’s manufacturing landscape.
Best Practices for Optimizing Hot-Melt Can Labeling
1. Maintain Optimal Application Temperature
Running adhesives within the recommended temperature range ensures proper viscosity and bonding. For ThermoGrip 1926A, operating between 225–275°F provides optimal performance.
Avoid overheating, as it can degrade the adhesive and increase char formation.
2. Ensure Proper Equipment Maintenance
Routine cleaning of glue pots, rollers, and nozzles prevents contamination and ensures consistent adhesive flow. Even the best adhesive cannot compensate for poorly maintained equipment.
3. Match Adhesive to Substrate
Different can materials and label types require specific adhesive properties. For example, metal cans demand strong initial tack and reliable bonding under varying environmental conditions.
ThermoGrip 1926A is specifically designed for three-piece metal can labeling, making it a reliable choice for beverage and food packaging applications.
4. Optimize Open Time and Set Speed
Hot-melt adhesives must strike the right balance between open time (for positioning) and set speed (for fast throughput). A well-formulated adhesive ensures labels adhere quickly without premature setting.
Hot-melts naturally provide fast bonding due to rapid cooling and solidification, enabling high-speed production lines.
5. Monitor Environmental Conditions
Humidity, temperature, and dust can all impact adhesive performance. Implementing environmental controls or adjusting process parameters helps maintain consistent results.
Why ThermoGrip 1926A Stands Out
When selecting an adhesive for can labeling, performance consistency and operational efficiency are critical. ThermoGrip 1926A delivers several advantages:
● Aggressive hot tack for reliable label pick-up
● Excellent thermal stability for open pot systems
● Lower odor formulation for improved workplace conditions
● Consistent viscosity profile for smooth application
● Proven performance on metal cans
These features make it an ideal solution for manufacturers seeking to eliminate downtime, reduce waste, and improve labeling accuracy.
Final Thoughts
Eliminating hot-melt challenges in can labeling is not just about troubleshooting issues, it’s about proactively selecting the right adhesive and implementing best practices across the production line. From maintaining proper temperatures to choosing a high-performance product like ThermoGrip 1926A, every step contributes to improved efficiency, reduced waste, and superior label quality.
Ready to Optimize Your Labeling Process?
If you're facing challenges with can labeling or looking to upgrade your adhesive performance, Lanco Adhesives can help. As a trusted supplier of high-quality packaging and labeling adhesives, Lanco offers expert guidance, reliable products, and tailored solutions for your operation.
Contact us today to speak with an expert and discover the right adhesive solution for your specific needs because better bonding starts with the right partner.
