Key Features:
- Accurate metering: high-precision low-speed gear pump, error ±0.5%.
- Even mixing: multi-tooth high-shear mixing head, reliable performance.
- Pouring head: special mechanical seal, no air leakage, prevent material pouring.
- Stable material temperature: the tank adopts its own heating temperature control system, stable temperature control, error ±2℃
- The whole machine adopts 7-inch touch screen, PLC module control, can be timed and quantitative flow injection and automatic cleaning level air flushing.
Types Of Low Pressure PU Foam Machine
PU Two-Component Low Pressure Foaming Machine
The two-component low pressure foaming machine is designed to produce high-quality polyurethane foam by accurately metering and mixing polyol and isocyanate materials. Widely used in industries such as furniture manufacturing, construction, and automotive, this machine is particularly well-suited for operations that prioritize simple controls and efficient output. Key advantages include low equipment investment, easy operation, and strong adaptability for small batch production scenarios.
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PU Three-Component Low Pressure Foaming Machine
The three-component low pressure foaming machine expands on the traditional two-component system by introducing a third component—such as pigments, flame retardants, or other additives. This enables greater formulation flexibility and allows for the production of foam products with varying colors, densities, or special properties. Ideal for customized applications like automotive interiors and specialty insulation, this machine provides enhanced versatility and supports diverse production needs.
- 2 Polyol+1 Isocyanate
- 3 Pigment：20L
- Tank：200L
- PLC:SIEMENS
Specification Of Low Pressure PU Foam Machine
| Model | Total Discharge Volume (g/s) |
Total Power (KW) |
Head Stirring Speed (/min) |
Mixing Ratio | Overall Dimensions (L × W × H) |
Weight (kg) |
| SPU-R1 | 16.5-66.5 | 9 | 3500-6000 | 2.5:1 | 1600×1600×2100 | 1000 |
| SPU-R2 | 66.5-200 | 9.5 | 3500-6000 | 2.5:1 | 1600×1600×2100 | 1000 |
| SPU-R3 | 133-333 | 10 | 3500-6000 | 2.5:1 | 1800×1700×2250 | 1300 |
| SPU-R4 | 250-66.5 | 11 | 3500-6000 | 2.5:1 | 1800×1700×2250 | 1300 |
| SPU-R5 | 333-1000 | 14 | 3500-6000 | 2.5:1 | 1900×1800×2400 | 1400 |
| SPU-RG | 666.5-2000 | 14 | 3500-6000 | 2.5:1 | 1900×1800×2600 | 1500 |
Key Accessories Of Low Pressure PU Foam Machine
Mixing Head
The low-pressure machine uses a mechanical stirring mixing head, which is suitable for mixing two-component or three-component materials. The mixing head is made of high-strength alloy steel with precision machining and has the following characteristics:
- Uniform mixing: The high-speed motor drives the stirring shaft to fully mix the raw materials in a short time
- Cleaning system: Built-in automatic or manual solvent cleaning system to prevent cross contamination and extend service life.
- Easy to replace: Modular design, easy disassembly and maintenance
Metering Pump System
The metering system is the key link to ensure the accurate proportion of materials:
- Precision gear pump: Select German technology high-precision stainless steel gear pump, with high-performance inverter to control flow, to achieve a ratio adjustment accuracy of less than ±1%.
- Dual pump or triple pump design: Support independent metering control of A/B materials or three-component raw materials to meet complex formula requirements.
- Imported seals: Use corrosion-resistant sealing components, suitable for various types of polyether and polyisocyanate materials.
PLC Control System
The whole machine adopts Siemens/Schneider PLC control platform, with touch-screen human-machine interface (HMI):
- Intelligent control: one-button start/stop, ratio setting, flow regulation, temperature control, fault alarm and other functions are integrated.
- Formula storage function: 10~30 sets of production parameters can be saved, which is convenient for switching different products.
- Remote maintenance (optional): support Ethernet or 4G remote debugging and data monitoring to improve after-sales efficiency.
Raw Material Storage Tanks
Equipped with raw material tanks with capacities ranging from 50L to 500L, the material can be stainless steel or carbon steel, with the following features:
- Double-layer insulation structure with stirring device to prevent raw material precipitation.
- Liquid level display window and high/low liquid level alarm system to ensure continuous feeding.
- Safety exhaust valve and explosion-proof device meet industry safety standards.
Application of Low Pressure PU Foam Machine
Polyurethane low pressure foaming machines are widely used in furniture, automobiles, shoes, toys and daily necessities. They are suitable for producing memory foam pillows, seat cushions, steering wheels, insoles, PU pressure balls, cleaning sponges and other soft and semi-rigid foam products. They are flexible to operate, easy to maintain and adaptable to a variety of molds.
Airport Seat
The low-pressure machine is used for Integral skin Foam of airport seats. The surface is dense and wear-resistant, the inner core is soft and comfortable, and the molding is stable. The process does not require additional coating, is suitable for multi-mode production, and is flexible to operate and efficient.
Faux Stone
It is used for foam injection of lightweight building decoration materials such as imitation stone wall panels, fireplace frames, decorative columns, etc., with realistic appearance and easy installation.
Foam Pillow
Low pressure foaming machine can be used for efficient molding production of PU foam pillows such as memory foam pillows and gel pillows. It has the characteristics of accurate ratio, uniform foaming, soft and comfortable finished products, good resilience, etc. It is an ideal equipment for the manufacture of healthy sleep products.
Home Furnishings
Used in the manufacture of soft foam products such as mattresses, sofas, cushions, etc., with excellent resilience and comfort.
Pipe Insulation
Low pressure foaming machines are suitable for the production of various polyurethane pipe insulation sheaths. The foam is dense and uniform, with high bonding strength. It can effectively improve thermal efficiency and prevent heat loss. It is widely used in pipe insulation systems in the fields of petroleum, chemical industry, heating, etc.
PU Insolo
Used in the foaming production of PU soles and slippers, it has excellent properties such as light weight, wear resistance and shock absorption.
PU Mat
Low pressure foaming machines are widely used in the production of PU mat products such as yoga mats, sports mats, and children's play mats. The foam is soft and comfortable, with good elasticity, excellent wear resistance and resilience, and is suitable for a variety of fitness and leisure scenes.
Makeup Sponge
Our low-pressure foaming machine can be used to produce polyurethane cosmetic cotton with uniform mixing, stable foaming and simple operation. The equipment can accurately control the proportion of raw materials to ensure that the foam of the cosmetic cotton has fine pores, good resilience and soft feel, meeting the high requirements of skin care products for softness and adsorption.
Toys
It is suitable for precision foaming of small items such as PU soft toys and modeling parts. The foam is fine and the product is safe and environmentally friendly.
FAQs of Low Pressure Pu Foam Machine
Can a static mixing device be added to the low pressure pu foam machine?
Yes, a static mixer is a device that continuously mixes fluid materials without moving parts. Typically the fluids to be mixed are liquids, but static mixers can also be used to mix gas streams, disperse gases into liquids, or mix immiscible liquids. The energy required for mixing comes from the pressure loss as the fluid flows through the static mixer. One design of static mixer is the plate mixer, another common equipment type consisting of mixer elements contained in a cylindrical or square housing.
Does the pu low-pressure foaming machine need to add a fan to dissipate heat from the host?
It can be increased, but it is recommended not to add it because it is easy for dust to enter, and electronic components can work at a temperature of 90-120 degrees.
Is the low pressure pu foaming machine suitable for mass production?
Yes, low-pressure pu foaming machines are ideal for large-scale production, especially in cost-sensitive applications that require high throughput. They can provide stable production efficiency and are suitable for continuous production.
What is the production efficiency of polyurethane low-pressure foaming machine?
PU low-pressure foaming machines can usually handle a larger amount of raw materials in each foaming process and have higher production efficiency. The specific output of the equipment depends on the machine configuration and production conditions.
Is the operation of a low-pressure foaming machine complicated?
The operation of the low-pressure pu foaming machine is relatively simple and suitable for beginners and ordinary operators. Most equipment is equipped with automated control systems, making operation more intuitive and reducing the possibility of human error.
How to adjust the density of foam?
The density adjustment is mainly controlled by changing the proportion of components A and B. Low-pressure pu foaming machines are usually equipped with proportional control systems to ensure that foams of different densities can be accurately produced.
What are the maintenance requirements for the equipment?
The maintenance requirements of low-pressure pu foaming machines are relatively simple. Major maintenance tasks include regular cleaning of sprinkler heads, pipes and seals. The machine's lubrication system and transmission system require regular inspection and maintenance.
Does the pu low-pressure foaming machine support customization?
Yes, the pu low-pressure foaming machine can be customized according to customer needs, such as adding barrels of different capacities, spray guns or changing pipeline configurations to suit specific production needs.
What is the energy consumption of pu low pressure foaming machine?
Low-pressure pu foam machines have relatively low energy consumption and are suitable for mass production, but the specific energy consumption also depends on parameters such as temperature and pressure during the production process.
How to extend the service life of low pressure foaming machine?
Equipment service life can be extended through regular maintenance, cleaning and replacement of wearing parts. Ensuring that excessive pressure and temperature do not occur during operation are also important measures to protect equipment.
