Granular EVA Hot Melt Glue Production Line | JCT Machinery

Granular EVA Hot Melt Glue Production Line

A granular EVA hot melt glue production line turns EVA resin, tackifying resin, wax and additives into uniform hot melt glue granules — from reactor melting and vacuum deaeration to extrusion, underwater granulation, drying and screening. JCT Machinery supplies complete granular EVA hot melt glue production lines with a stable reactor, precise temperature control and consistent granule shape, so manufacturers can run high-yield, low-scrap production of granular hot melt glue for packaging, bookbinding, labelling, woodworking and other industries.

What Is EVA Hot Melt Glue?

EVA hot melt glue is a solvent-free, water-free, 100% solid fusible polymer. It is solid at room temperature and becomes a flowable liquid adhesive with a certain viscosity when heated and melted to a certain degree. After melting, it is light brown, translucent, or native white. Because no solvent or water is involved, an EVA hot melt glue production line is a cleaner and more energy-efficient route than solvent-based adhesive manufacturing.

What Is Granular EVA Hot Melt Glue?

Granular EVA hot melt glue is the same solvent-free EVA hot melt glue supplied in granule form. Instead of being cast into sticks, the molten glue from the reactor is extruded and cut underwater, then cooled, dewatered, dried and screened into uniform granules. Granules are easier to store, transport, melt and dose automatically, which is why a granular EVA hot melt glue production line is widely used for bulk packing and automated glue feeding.

Granular EVA Hot Melt Glue Production Line Equipment Configuration

A complete granular EVA hot melt glue production line from JCT Machinery typically includes the following units:

1. Reactor (or sigma mixer)
2. Storage and mixing tank
3. Filtration system
4. Screw extruder and the die head
5. Cooling water channel
6. Dehydrator
7. Underwater granulator
8. Vibrating screen
9. Cyclone separator
10. High viscosity discharging pump or discharging screw
     

Reactor: The Heart of the Granular EVA Hot Melt Glue Production Line

The reactor is responsible for controlling the temperature, pressure and mixing speed of the raw materials. The raw materials used to make granular EVA hot melt glue typically include EVA resin, tackifying resin, wax and other additives. These materials are added to the reactor in specific proportions and heated to a specific temperature to create a homogeneous mixture.

The reactor plays a vital role in the granular EVA hot melt glue production line, because it ensures that the hot melt glue produced is of consistent quality and meets the desired specifications. The reactor also helps to eliminate impurities or contaminants that may be present in the raw materials, ensuring that the final product is of high quality — and it directly determines the melt viscosity and uniformity that the downstream extruder and underwater granulator depend on.

Reactor specification available from JCT Machinery:

EVA Hot Melt Glue Formula

The reactor and the downstream units of the granular EVA hot melt glue production line are configured around this formula, so the same line can run different recipes without changing the overall process flow.

How the Granular EVA Hot Melt Glue Production Process Works

1. Feeding and storage — EVA resin, tackifying resin, wax and additives are delivered to the storage and mixing tank by a manual or automatic feeding system (screw feeder for granular raw material, pneumatic conveying for powder).
2. Melting and mixing — the raw materials are heated and mixed inside the reactor into a homogeneous melt at controlled temperature, pressure and mixing speed.
3. Vacuum deaeration — a vacuum system removes trapped air and other gases so the melt stays homogeneous and free of bubbles and defects.
4. Filtration and transfer — the melt passes through the filtration system and the high viscosity discharging pump or discharging screw on its way to the extruder.
5. Extrusion — the screw extruder and the die head form the melt into strands.
6. Cooling and granulation — the strands are cooled in the cooling water channel and cut by the underwater granulator into uniform granules.
7. Dewatering and drying — the dehydrator and a rotary dryer remove surface moisture from the granules.
8. Screening and collection — the vibrating screen separates granules by size and removes impurities, while the cyclone separator collects the finished product.
9. Packaging — the finished granular EVA hot melt glue is packed and stored.

EVA Hot Melt Glue Production Process

Technical Advantages of JCT's Granular EVA Hot Melt Glue Production Line

1. Advanced automated production process
2. Efficient mixing and homogenizing dispersion technology
3. High-precision temperature and process control
4. Efficient energy-saving design to reduce production costs
5. Diversified discharging methods to meet different packaging needs
    

Solving the Granule Tail Problem: Consistent Granule Shape

JCT found that some hot melt glue granules produced by some production line equipment on the market have tails (i.e. the granule shape is not smooth enough, and there is a phenomenon of drawing or tailing). Choosing JCT's equipment can prevent this from happening.

1. High-precision cutting technology system ensures perfect particle shape and eliminates wire drawing tails.
2. Accurate temperature control system optimizes glue viscosity to prevent cutting wire drawing.
3. Advanced water cooling / air cooling system ensures rapid particle shaping.
4. Intelligent automatic control, precise adjustment of production parameters, stable and consistent production results.

FAQ: Granular EVA Hot Melt Glue Production Line and Reactor

Q: What is a granular EVA hot melt glue production line?

A: It is a continuous production system that melts, mixes, extrudes, underwater-cuts, dries and screens EVA-based hot melt glue into uniform granules. A typical granular EVA hot melt glue production line includes a reactor, a storage and mixing tank, a filtration system, a screw extruder, a cooling water channel, a dehydrator, an underwater granulator, a vibrating screen, a cyclone separator and a high viscosity discharging pump.

Q: What is the function of the reactor in a granular EVA hot melt glue production line?

A: The reactor controls the temperature, pressure and mixing speed of the raw materials. It melts and mixes EVA resin, tackifying resin, wax and additives into a homogeneous mixture, removes impurities, and determines the melt viscosity that the extruder and underwater granulator work with.

Q: What capacity of reactor is available for a granular EVA hot melt glue production line?

A: JCT Machinery offers 500 L, 1000 L, 5000 L and 10 T reactors, all jacketed vessels with a mechanical agitator, pressure relief valve, operating temperature up to 200 °C and operating pressure up to 1.6 MPa.

Q: Does the line use a reactor or a sigma mixer?

A: Both are available. The granular EVA hot melt glue production line can be configured with a reactor or with a sigma mixer, depending on the formula and capacity requirement.

Q: Why do some hot melt glue granules have tails?

A: Tails (a non-smooth granule shape with drawing or tailing) usually come from unstable cutting temperature and inaccurate temperature or viscosity control. JCT's high-precision cutting technology, accurate temperature control and rapid water / air cooling keep the granule shape consistent and eliminate wire drawing tails.

Contact JCT Machinery

Looking for a reliable granular EVA hot melt glue production line, or the right reactor capacity for your capacity target? Contact JCT Machinery and tell us your formula, output and granule size requirement — our engineers will recommend the equipment configuration and provide a free quotation.