PUR Hot Melt Glue Production Line Solutions

What is PUR hot melt glue?

PUR hot melt glue is a reactive hot melt glue that is in a molten state when heated. After cooling, it first undergoes physical solidification, and then reacts chemically with moisture in the air to form a high-strength, irreversible cross-linked structure.

PUR Hot Melt Glue Application Areas

• Furniture edge banding (high-end panel furniture)
• Woodworking industry (solid wood splicing, lamination)
• Automotive interiors
• Structural bonding of electronic products
• Textile composites and filter materials
• Packaging and industrial assembly

PUR Hot Melt Glue Production Line Equipment Configuration

1. Reactor: Used for polyurethane prepolymer reaction, typically features jacketed heating and a vacuum-sealed design.
2. Metering and feeding system: Precisely adds polyols, isocyanated, and additives.
3. Vacuum system: Dehydrates and degasses, preventing side reactions.
4. Temperature control system: Precisely controls the reaction temperature to prevnt polymer degradation.
5. High-viscosity conveying system: Gear pump/screw pump for stable conveying of PUR melt.
6. Molding system: Various molding methods available, including pillow, block and granule.
7. Cooling system: Water bath or cooling belt for rapid solidification.

PUR Hot Melt Glue Production Process

1. Raw material preparation
2. Pre-polymerization reaction
3. Modification treatment
4. Molding and packaging
5. Quality inspection

Key Technical Aspects of PUR Hot Melt Glue Production Line

1. Moisture-proof design is crucial

• Fully enclosed system
• Nitrogen protection
• Strict control of water content in raw materials, pipelines and storage tanks

2. Reactor performance determines product quality

• Uniform mixing
• No dead zones
• Precise temperature control
• Reliable vacuum sealing

3. Adaptation to high-viscosity melts

• Requires high-torque stirring
• High-strength transfer pump
• Anti-coking and anti-residue design