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Let me tell you the equipment and process flow of producing granular hot melt adhesive.

Author: source: Datetime: 2018-07-16 16:59:24

Hot melt adhesive can be divided into block, granular, rod like and powdery shapes according to the shape of the product.

Types of hot melt adhesives: EVA (ethylene - vinyl acetate), TPR (thermoplastic rubber), APAO (polyolefin), PA (polyamide), PU (polyurethane), POLYESTER (polyester), PE type (PE) and other.

Today, I want to talk about the equipment and process flow of producing granular hot melt adhesive.

What equipment does the hot melt adhesive (granular) complete production line require?


2 sets of reaction kettle (or kneading machine + stirred tank), coarse filter, high viscosity pump, fine filter, feed die head (or extruder), cooling tank, traction granulator, vibrating screen, vibrating fluidized bed, cyclone separator heating system, vacuum system and so on.

The process flow is as follows:

1) according to the formula of hot melt adhesive, the raw materials are weighed and added to the reactor (or kneader). The heating system is heated to melt and stir evenly. By pumping a vacuum, the bubbles in the glue are removed.

2) the reacting kettle is melted through the feed pump, through the filter system into the stirring storage tank, cooling to a constant temperature after a certain temperature, through the feed pump, into the feed die head (or screw extruder).

Hot melt adhesive

3) the rubber strips extruded from the die (or extruder) are cooled in the cooling water tank, and the particles are cut through the traction granulator. The output speed and the traction speed are controlled by the frequency converter to keep them in sync. The particle size and length are controlled by the die opening and cutting speed. The cut particles are cooled again and enter the vibrating screen to dehydrate.

4) the dehydrated particles enter the vibrated fluidized bed, drying through vibration and blower blowing. If further drying is needed, the cyclone separator, dehydration, and packaging are entered.

Hot melt adhesive production line

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