Hot Melt Glue Stick Production Line Turnkey Project

What is hot melt glue stick?

Hot melt glue stick is solid adhesive that come in stick or bar form at room temperature and require heating and melting with a hot melt glue gun before use. It is primarily used for:

• Packaging sealing
• Furniture assembly
• DIY crafts
• Electronic component mounting
• Automotive interiors

Hot Melt Glue Stick Production Line Equipment

1. Reactor / Sigma mixer
2. Storage tank
3. High viscosity discharge pump
4. Filter
5. Heating system
6. Screw extruder
7. Cooling water tank
8. Ice water machine
9. Full automatic traction and cutting machine

Hot Melt Glue Stick Production Line Capacity Selection

Hot Melt Glue Stick Production Process

1. Raw material proportion

Main raw materials: EVA, resin (such as rosin-modified resin), wax, antioxidant.

Adjust the ratio based on viscosity, flexibility, initial tack and other requirements.

2. Melt mixing

Add materials → Heat to melt → Mix untial uniform

3. Extrusion

The hot material is extruded through the extruder die into sticks.

4. Cooling and shaping

A cooling water tank or air cooling system allows for rapid curing of the hot melt glue sticks.

5. Cutting and packaging

Cut to length using a cutting machine.

Automatic packaging machine/manual packaging of finished products.

Technical Advantages of Hot Melt Glue Stick Production Line

• Precise temperature control: A multi-zone heating system ensures stable temperatures at different material stages.
• Uniform mixing: Twin-screw or high-shear mixing ensures bubble- and particle-free colloid production.
• Continuous production: Fully automated production from feeding to packaging reduces manual intervention.
• Energy optimization: Both heating and cooling systems are equipped with energy-saving controls.
• High product consistency: Dimensional deviation is less than ±0.5mm, and viscosity and color are stable.

JCT provide a complete hot melt glue stick production line turnkey project:

1. Process formula recipe reference and optimization
2. Equipment design, manufacturing and installation
3. Automation control system configuration
4. Commissioning and personnel training
5. After-sales service and spare parts supply

JCT ensures that the specifications of your hot melt glue sticks are consistent.

1. Extrusion Pressure and Speed Control

Constant screw speed: Utilizes variable frequency control or servo drive to maintain a stable screw speed and avoid flow fluctuations.

High-precision die design: Die diameter to lerance is less than ±0.05mm, and the finish is highly polished, minimizing friction and uneven material flow.

Adjustable back pressure: Adjusting back pressure stabilizes material density, preventing hollowness or uneven diameters in the rubber stick.

2. Consistent Cooling and Shaping

Uniform cooling rate: The cooling water temperature and flow rate are consistent to avoid oval sticks caused by excessive cooling in one diraction and slow cooling in the other.

Guiding device: A guide wheel or bracket is installed within the cooling trough to prevent the hot melt glue sticks from drifting and bending.

Shaping length: The cooling length is sufficient. After existing the trough, the hot melt glue sticks must be completely solidified before being cut.

3. Cutting and Inspection

Cut-to-length machine: Utilizes a servo-controlled cutter with an accuracy controllable to ±0.5mm.

In-line diameter gauge (optional): Installed after cooling, a laser diameter measurement device measures the diameter of the hot melt glue stick in real time and provides feedback to the extruder for speed adjustment.

Surface inspection: A visual inspection system can be added to remove hot melt glue with bubbles, cracks and abnormal color.