Polyurethane Spraying Machine for Sale

The polyurethane spraying machine(PU Spraying Machine) is a specialized device used to evenly apply polyurethane materials onto surfaces.  It’s a key piece of spray foam insulation equipment that transforms liquid polyurethane components into a foam that can be applied to various surfaces. These machines are widely used in construction, automotive, and industrial sectors due to their efficiency and versatility. WhatsApp/WeChat/Phone +86 138 3715 9132

Key Parameters of Polyurethane Spraying Machine

Project	YGMC-500 high configuration PU Machine
Proportion Fixed Mainframe	1 set
Self-cleaning spray gun	1 set
Gross weight	300KG
Net weight	250KG
Feed pump	2 sets
Heated hose	49.2 ft (15 m)
Data ratio of raw materials	1: 1 (fixed)
Raw material viscosity range	200-1000CPS (at working temperature)
Max Working pressure	35MPa (350 bar)
Maximum Fluid Temperature	88 ° C (190 ° F)
Maximum output	24kg/min (42 lb/min)
Each heater power	6000W
Heating hose power	1000W / 15m
Total power	15000W
Voltage	230V 1-ph / 3-ph 220V/400V 3-ph
Machine size	870mm* 700mm* 1150mm

How Does a PU Spraying Machine Work?

The working principle of a Polyurethane Spraying Machine involves mixing two main components: polyol and isocyanate. These components are stored in separate tanks. When the machine is activated, the components are pumped through a heated hose system at a specific ratio. The heat ensures the components remain in a liquid state and flow smoothly. Operators mix the two components under high pressure at the spray gun and then spray them onto the target surface. Once operators spray the foam, it expands and hardens quickly, forming a seamless insulation layer.

Types of PU Spraying Machines

• High-pressure Foam Machine: These machines operate at high pressures, typically above 1000 psi. High-pressure machines can mix the components more thoroughly, resulting in a higher-quality foam with better insulation properties. They are suitable for large-scale projects where a fast and efficient application is required.
• Low – pressure Polyurethane Sprayer: Operating at lower pressures, usually below 1000 psi, low – pressure sprayers are more suitable for small – scale or DIY projects. They are easier to handle and less expensive, but the foam quality may not be as high as that produced by high – pressure machines.
• Portable Spray Foam Machine: Portable machines are lightweight and easy to move around. They are ideal for projects in different locations or where access is limited. Portable machines can be either high – pressure or low – pressure, depending on the specific model.
• Electric vs Pneumatic Models: Electric models work well where power is stable; pneumatic ones are ideal for hazardous or remote environments.
• Heated Hose Spray Systems: Maintain material temperature during spraying for consistent quality.

Applications of PU Pressure Spray Machines

PU Pressure Spray Machines have wide applications across industries:

• Building and Wall Insulation: Improves energy efficiency.
• Roofing Foam Spray Systems: Provides waterproofing and UV reflection.
• Cold Storage and Freezer Rooms: Maintains stable, low temperatures.
• Soundproofing & Vibration Dampening: Used in studios, vehicles, and industrial setups.
• Vehicle and Marine Coatings: Offers corrosion resistance and durability.
• Pipe and Tank Coating: Protects internal and external surfaces from rust.

Advantages of a Polyurethane Spraying Machine

• Energy-Efficient Insulation: High thermal resistance reduces heating/cooling costs by minimizing energy loss in buildings.
• Seamless, Air-Tight Seal: Expanding foam fills gaps, blocking air/moisture infiltration for superior weatherproofing.
• Versatile Surface Application: Works on concrete, wood, metal, plastic, and more—ideal for construction, automotive, and manufacturing.
• Rapid Installation: Faster than traditional methods, cutting labor time while ensuring uniform, professional results.
• Lightweight Durability: Strong, long-lasting finish that adds minimal weight to structures, enhancing longevity.
• Eco-Friendly Options: Low VOC formulations and recyclable materials support sustainable projects with reduced environmental impact.
• Long-Term Savings: Lower energy bills and maintenance costs, combined with efficient material use, deliver strong ROI.

How to Choose a Polyurethane Spraying Machine

When selecting a polyurethane spraying machine, prioritize these key factors to ensure optimal performance for your project:

Project Scale & Frequency

High-pressure machines are ideal for large commercial jobs or frequent use, while portable low-pressure units suit small-scale or occasional projects.

Mobility Needs

Opt for lightweight, portable models if working across multiple sites; stationary units are better for fixed-location, high-volume tasks.

Power Source Compatibility

Choose electric models for standard environments or pneumatic/air-powered machines for remote areas with limited power access.

Material Type

Ensure the machine is compatible with your polyurethane type (open-cell, closed-cell, or elastomeric) to guarantee proper mixing and application.

Budget & Long-Term Costs

Balance upfront costs with total ownership expenses, including maintenance, energy efficiency, and potential upgrades for durability and performance.

Foam Quality Standards

Invest in machines with reliable mixing systems to deliver consistent, high-density foam for critical insulation or sealing applications.

How to Operate the Polyurethane Spraying Machine

1. Pre-operation: Check the machine for integrity. Prepare raw materials, cleaning agents, and wear protective gear. Clear and ventilate the work area.
2. Setup: Connect power, install the nozzle, adjust pressure, and material ratio.
3. Spraying: Prime the pump, start spraying with a steady speed, and monitor the process. Pay attention to edges and corners.
4. Post-operation: Clean the spray gun, drain remaining material, wipe the machine, turn off power, and store properly.

YG Machinery – Trusted Polyurethane Spraying Machine Manufacturer

Our polyurethane spraying machine stands out with remarkable features. Boasting high mixing pressure, it ensures excellent atomization, thorough and even material blending.
The result? A flawlessly smooth spray surface. Thanks to its robust design, the machine delivers stable performance, minimizing malfunctions and downtime. Operation is intuitive and straightforward, making it an ideal choice for construction projects.
Besides our top – notch spraying machine, we also offer a diverse range of other machinery. Seize the opportunity to own our high – quality polyurethane spraying machine at unbeatable factory prices. Contact us today! WhatsApp/WeChat/Phone +86 138 3715 9132