Glue non-stick, wire, cold sticky? End hot melt FAQs.

Hot melt is a plastic adhesive, in a certain temperature range its physical state will change with the temperature changes, and chemical properties, its non-toxic tasteless, belong to environmentally friendly chemicals.
1. Glue is not sticky
hot melt glue is not sticky for many reasons, depending on what factors affect its performance, temperature factors are one of the most common reasons at the time.as the weather cools, when the material is bonded, there is often a phenomenon that the glue has cured

. Even without curing, the best bonding results are missed. Even in some northern regions, the temperature of the material is quite low, resulting in an unsatisfactory bonding effect.the hot melt film has certain requirements for the temperature of use, it is necessary to adjust the temperature of use according to the product parameters.can I improve bonding? The material can be warmed up to improve bonding by heating it in the oven or infrared.
2. There is a wire problem
(1) hot melt curing time
hot melt curing time is very important to the production of the razing phenomenon, the law of the curing time is short hot melt to produce a wire is low, because the hot melt spewing out the gun when the formation of fine wire, due to rapid curing, can not continue to e lengthen, easy to break, and sometimes can not see the silk pull out.
(2) machine temperature
the temperature is too low, so that the thinness of the glue itself increased, and the phenomenon of pulling.
3. High temperature bubbles
hot melt glue is generally through the hot melt machine heating to melt glue, sol after the state of the collusion into a liquid, can be coated, sprayed, strip construction.In the process of melting glue in the hot melt machine, sometimes there will be bubbles, then the cause of foaming is what, the general cause of foaming may be due to the collage itself has bubbles, melting bubbles, or the collage contains moisture, heating is also easy to produce bubbles, there is hot melt glue due to high temperature caused by the collage damage, decomposition of the production of gas, resulting in the production of bubbles.So hot melt in the use of the process should control the use of temperature, regular cleaning of equipment, to prevent carbon accumulation, to avoid local temperature too high on the colloid damage, affecting the use of hot melt performance.
4. Cold sticky phenomenon
hot melt cools before bonding, also known as cold stick phenomenon, the reasons and solutions for cold sticky phenomenon are as follow
s: (1→) hot melt use temperature is low→
(3) the conveyor belt speed is too slow→ increase the conveyor speed→
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the hot melt appears cold sticky phenomenon, need to be analyzed for different reasons, to obtain the corresponding solution.
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