Question 1

How should hot melt adhesives be stored?

Accepted Answer

Store in a cool, dry, and well-ventilated place. Keep away from direct sunlight and moisture. Ideal temperature: 5–35°C (41–95°F). Once opened, use as soon as possible to avoid moisture absorption and clumping.

Question 2

How do I choose the right hot melt adhesive?

Accepted Answer

Consider substrate type, machine speed, application temperature, viscosity/flow, and end-use scenario:

Panel edge banding → EVA / PUR;
Mattress bonding → SBS pressure-sensitive / APO;
High heat & chemical resistance → PUR;
General packaging & automation → EVA, APO.
If unsure, contact HUJUMP technical support for a tailored recommendation.

Question 3

Are HUJUMP hot melt adhesives safe and eco-friendly?

Accepted Answer

Yes. HUJUMP hot melt adhesives are 100% solid content, solvent-free, non-toxic, and low-odor. They comply with REACH, RoHS, OEKO-TEX, SGS and other international safety and environmental standards.

Question 4

Why is my hot melt spray gun not working or producing stringing?

Accepted Answer

No glue output: Check for nozzle blockage, insufficient air pressure, or low temperature; clean filters and nozzles regularly.
Stringing: Increase glue temperature slightly, reduce application amount, and keep the environment temperature stable.

Question 5

What should I pay attention to when using hot melt adhesives in winter?

Accepted Answer

Low temperatures may reduce surface wetting and initial tack. We recommend:

Preheating substrates;
Increasing glue tank/roller temperature;
Speeding up edge banding to reduce exposure time;
Using HUJUMP’s winter low-temperature formulas (e.g., 7030, 8010, 8030 series).

Frequently asked questions

How should hot melt adhesives be stored?

How do I choose the right hot melt adhesive?

Are HUJUMP hot melt adhesives safe and eco-friendly?

Why is my hot melt spray gun not working or producing stringing?

What should I pay attention to when using hot melt adhesives in winter?