About PU Resin Production Line

What is PU resin?

PU (polyurethane) resin is a polymer material produced by the reaction of diisocyanates (such as TDI and MDI) and polyols under certain conditions. It is widely used in coatings, adhesives, elastomers, foam materials, synthetic leather, electronic packaging and other industries.

PU Resin Production Line Equipment Configuration

1. Raw material storage tank
2. Vacuum dehydration kettle
3. High-precision metering system
4. Reactor
5. Dilution/blending kettle
6. Filter
7. Automatic filling machine
8. Heat transfer system
9. Nitrogen generator system
10. Solvent recovery system

PU Resin Production Line Flow

1. Raw material pretreatment: Polyols are dried and isocyanates are stored in a closed system.

2. Raw material metering and dosing: An automated metering system accurately feeds the raw materials into the reactor.

3. Heating and reaction: Polymerization occurs under stirring and temperature control.

4. Dispersion and mixing: Add additives, fillers or pigments.

5. Vacuum degassing: Removes air bubbles and improves resin clarity and stability.

6. Cooling and discharging: Cools the raw materials through a heat exchange system and prepares them for packaging.

7. Filtration and packaging: Filters impurities and packages into drums.

JCT's PU resin production line turnkey project:

• Eliminating water: Vacuum dehydration and nitrogen atmosphere throughout the process completely eliminate moisture interference.
• Ensuring accuracy: An ultra-high-precision metering system ensures absolute precision in complex chemical ratios.
• Controlling heat: Efficient stirring and precise temperature control harness the intense exothermic reaction, ensuring stable product molecular weight distribution and performance.
• Ensuring Safety: Automated control, explosion-proof design, and safety interlocks ensure absolute safety when handling hazardous chemicals such as isocyanates.

Applications of PU Resin

1. Coatings: Automotive paints, wood coatings, anti-corrosion coatings, and leather finishing.
2. Adhesive: Adhesives for shoe materials, composite panels, and packaging films.
3. Elastomer: TPU (thermoplastic polyurethane) is used in shoe soles, sports equipment, and cable sheathing.
4. Foaming Material: Rigid foam: Building insulation, refrigerator insulation. Soft foam: Furniture, mattresses, and car seats.
5. Synthetic Leather: Artificial leather, clothing, and luggage materials.
6. Electronics and Electrical Appliances: Electrical packaging materials and insulating varnishes.