Once hot melt adhesives safely arrive at your facility, proper pre-treatment and operational procedures are decisive for ensuring the final bonding outcome. Simultaneously, selecting suitable formulations can fundamentally improve operational tolerance in low-temperature environments.
1. Establish a Scientific "Thawing and Awakening" Procedure
Slow Thawing is Key: It is strictly forbidden to use ovens or other heat sources for rapid, localized heating of frozen adhesive! This can cause the exterior to soften while the interior remains hard and may cause thermal stress damage. The correct method is to move the entire box to a room maintained at 15-25°C and allow sufficient time (e.g., 24-72 hours) for it to return uniformly and slowly to room temperature.
Follow FIFO: Manage inventory effectively to ensure sufficient time for the thawing process, avoiding the need for违规操作 due to urgent production demands.
2. Optimize Equipment Process Parameters
Preheating and Staged Heating: Configure a preheating zone in the melting equipment or adopt a staged heating strategy to allow granules to heat up gradually, avoiding instant entry into high-temperature zones.
Equipment Insulation: Check and enhance the insulation of the melter tank, hoses, and applicator head to reduce heat loss and maintain stable adhesive viscosity during transfer.
3. Selecting "Cold-Resistant" Product Formulations
The most effective way to handle severe cold is to use adhesives designed for low-temperature environments from the outset.
High-Toughness, Low-Temperature Flexible Formulations: These modified formulations significantly lower the glass transition temperature (Tg), allowing the adhesive to maintain good toughness and impact resistance at low temperatures, reducing brittleness.
Low-Viscosity, Fast-Wetting Formulations: These maintain better flow and wettability even at lower application temperatures, effectively mitigating issues of excessively short open time and poor adhesion.
Freeze-Resistant Water-based PUD: Select water-based products with added anti-freeze agents that can withstand occasional low-temperature exposure, avoiding spoilage due to short-term freeze-thaw cycles.
Professional Advice: We strongly recommend consulting with our technical sales engineers to recommend the most suitable "Winter Formulation" or "Cold-Resistant Series" products for your specific low-temperature application scenarios, ensuring smooth and stable production processes.
Once hot melt adhesives safely arrive at your facility, proper pre-treatment and operational procedures are decisive for ensuring the final bonding outcome. Simultaneously, selecting suitable formulations can fundamentally improve operational tolerance in low-temperature environments.
1. Establish a Scientific "Thawing and Awakening" Procedure
Slow Thawing is Key: It is strictly forbidden to use ovens or other heat sources for rapid, localized heating of frozen adhesive! This can cause the exterior to soften while the interior remains hard and may cause thermal stress damage. The correct method is to move the entire box to a room maintained at 15-25°C and allow sufficient time (e.g., 24-72 hours) for it to return uniformly and slowly to room temperature.
Follow FIFO: Manage inventory effectively to ensure sufficient time for the thawing process, avoiding the need for违规操作 due to urgent production demands.
2. Optimize Equipment Process Parameters
Preheating and Staged Heating: Configure a preheating zone in the melting equipment or adopt a staged heating strategy to allow granules to heat up gradually, avoiding instant entry into high-temperature zones.
Equipment Insulation: Check and enhance the insulation of the melter tank, hoses, and applicator head to reduce heat loss and maintain stable adhesive viscosity during transfer.
3. Selecting "Cold-Resistant" Product Formulations
The most effective way to handle severe cold is to use adhesives designed for low-temperature environments from the outset.
High-Toughness, Low-Temperature Flexible Formulations: These modified formulations significantly lower the glass transition temperature (Tg), allowing the adhesive to maintain good toughness and impact resistance at low temperatures, reducing brittleness.
Low-Viscosity, Fast-Wetting Formulations: These maintain better flow and wettability even at lower application temperatures, effectively mitigating issues of excessively short open time and poor adhesion.
Freeze-Resistant Water-based PUD: Select water-based products with added anti-freeze agents that can withstand occasional low-temperature exposure, avoiding spoilage due to short-term freeze-thaw cycles.
Professional Advice: We strongly recommend consulting with our technical sales engineers to recommend the most suitable "Winter Formulation" or "Cold-Resistant Series" products for your specific low-temperature application scenarios, ensuring smooth and stable production processes.
