What kinds of situations often occur when hot melt adhesive particles are used in furniture edge sealing?

What kinds of situations often occur when hot melt adhesive particles are used in furniture edge sealing?

1. Black edge phenomenon: The hot melt machine has not been cleaned for a long time, and the glue itself has carbonization phenomenon.

2. The edge banding strip is not sticky; there is dust on the strip itself or on the surface of the wood; the temperature adjustment of the machine is too low, so that the temperature of the material itself is low and cannot reach a certain strength.

3. The surface of the edge sealing is uneven: the open period of the hot melt adhesive has passed during operation, or the temperature is too low so that the hot melt adhesive is not completely melted.