Turnkey Project
From design, manufacturing to installation and training, yongjia provides one-stop solutions throughout the entire process
Modularization Design
Adopting a modular structure for easy expansion, upgrade, and maintenance
Flexible Solution Design
Flexible customization according to your production capacity needs and process requirements, taking into account current investment and future development .
Yongjia is a professional low pressure polyurethane foaming machine manufacturer specializing in the production of refrigerator insulation and freezer foam. We provide a one-stop solution, covering equipment design, mold matching, raw material matching, production line layout, and technical training.
Our low pressure machines feature precise metering, uniform mixing, and easy operation, ensuring consistent foam density and quality. Their modular design and intelligent PLC control allow for flexible adjustment of foaming solutions to different refrigerator types.
Low pressure pu machine
Yongjia’s low-pressure polyurethane foaming machine is specifically designed for producing insulation for refrigerators and freezers. It offers precise metering, uniform mixing, and easy operation. The machine utilizes an intelligent PLC control system, allowing for flexible adjustment of flow rate, temperature, and pressure to ensure stable foam density and excellent insulation performance. Its modular design allows for adaptability to varying refrigerator sizes and foaming requirements, enabling efficient, continuous production.
Mixing Head
The low-pressure mixing head mixes PU smoothly and accurately for refrigerator insulation, without leaks. It keeps the foam density even, helps the fridge maintain excellent thermal performance, and reduces wasted material.
Siemens PLC System
The Siemens PLC keeps your refrigerator foaming line running smoothly with smart automation. It coordinates each step precisely, helps maintain consistent foam quality, and makes production easier to monitor and control.
Metering Pump System
The metering pump delivers PU components steadily and accurately for refrigerator insulation. It keeps foam density consistent, reduces material waste, and ensures smooth, trouble-free production.
Recommended parameters for low pressure machines used in manufacturing refrigerator
| Components | 2-3 Components |
| Flow | 110-250g (suitable for finished product weight 1kg) |
| Power | 18-100 |
- more About low Pressure pu machine
- More About refrigerator Production Line
- low Pressure PU Machine Documentation Hub
Why Choose Our Low Pressure PU Machines For Refrigerator？
Choosing Yongjia’s low pressure polyurethane machine to produce refrigerator insulation allows customers to benefit from our engineering experience and one-stop service. The machine’s precise metering, uniform mixing, and flexible modularity adapt to different refrigerator models and foaming requirements, ensuring stable foam density and excellent thermal insulation performance. Furthermore, by optimizing processes and improving raw material utilization, we help customers reduce production costs and improve efficiency.
One-stop service
Complete turnkey delivery of equipment, molds, raw material support, and production line design.
Precision and stability
Accurate metering and uniform mixing ensure consistent foam density and thermal insulation performance.
Cost optimization
Improve raw material utilization, reduce production waste, and enhance overall efficiency.
PU Low Pressure Foaming Machine One Stop Solution
Yongjia provides clients with one-stop solutions for refrigerator insulation and automotive seat production, covering the entire process from raw materials, molds, equipment, and entire production lines. We can customize system configurations to meet client needs, ensuring seamless integration of all links for efficient and stable production. From concept design, equipment selection, mold development, installation and commissioning, to worker training, Yongjia creates high-quality, low-cost, and sustainable production systems for clients, enabling rapid production start-up and enhancing overall competitiveness.
PU Foam Materials
- Density: Typically 35–45 kg/m³, depending on refrigerator type and insulation thickness.
- Foam Structure: High closed-cell ratio, ensuring thermal insulation and moisture resistance.
- Foaming Performance: Fast reaction time and uniform foaming, suitable for continuous production.
- Durability: The foam is stable and resists collapse, maintaining insulation performance over time.
Polyurethane raw materials can be customized based on refrigerator size, performance requirements, and production processes, ensuring optimal insulation performance, stability, and energy efficiency in the final product.
Low Pressure PU Machine
- Precise metering and uniform mixing ensure stable foam density.
- Intelligent PLC control ensures simple and efficient operation.
- Modular design adapts to various refrigerator models.
- Energy-saving, durable, and easy to maintain.
- Manufacturing expertise and one-stop service ensure stable and efficient production.
Refrigerator Mold
- High-precision aluminum alloy material: fast thermal conductivity, high strength, and long service life.
- Excellent molding results: uniform foam, smooth surface, and stable dimensions.
- Modular design: adapts to different refrigerator models, facilitating replacement and maintenance.
- Efficient cooling system: shortens foaming cycle and improves production efficiency.
- Stable and reliable: ensures consistent finished products and supports continuous production.
Yongjia Polyurethane Service
Tailor-made SolutionsWe customize the optimal high-pressure press configuration based on production capacity, product, and material system, supporting expansion and upgrades to meet future needs.
Operator TrainingWe provide comprehensive operation, maintenance, and process training, with multi-language interfaces and manuals to help employees quickly get up to speed.
Global After-sales SupportWe have service and spare parts centers in Europe, America, and Asia, offering 24/7 online support and regular maintenance to reduce downtime.
Long-term PartnershipWe provide comprehensive support from design and installation to production start-up, continuously optimizing solutions to help customers maintain their competitiveness.
refrigerator application
Yongjia’s low-pressure polyurethane foaming machines are widely used in the production of refrigerator and freezer insulation, suitable for refrigerator cases of various sizes and types. Through precise metering and uniform mixing, the equipment ensures stable foam density and a high closed-cell ratio, resulting in excellent thermal and moisture-proof properties. Whether used in household refrigerators, commercial freezers, or refrigerated transport equipment, Yongjia’s low-pressure machines support efficient and continuous production, helping customers improve product insulation performance and overall production efficiency.
Horizontal Freezer
Precise temperature Control Fast Cool Quiet Operation Power-off Protection Flexible Space High Efficiency Compressor
Cake Cabinet
Designed specifically for displaying and preserving cakes and desserts, they balance refrigeration and display, enhancing the store's image.
Island Freezer
Commonly used for displaying frozen foods in supermarkets, they offer large capacity and convenient access, making them suitable for quick-frozen foods and large-volume storage.
Refrigerated Workbench
Combining refrigeration and workstation functions, they are widely used in restaurant kitchens, allowing for easy access and processing of ingredients.
Display Case
Primarily used for refrigerating and displaying beverages, dairy products, and other items. Glass doors enhance product visibility and boost sales.
Kitchen Refrigerator
Core refrigeration equipment in commercial kitchens, designed with durability, capacity, and efficient cooling to ensure food freshness.
Meat Refrigerated Dispaly Cabinet
Specialized for preserving fresh meat, they maintain low temperatures and provide appropriate humidity control to prevent drying and discoloration.
Supermarket Freezer
Offering a variety of refrigeration and freezing options, they are suitable for large-scale retail scenarios and meet diverse food storage needs.
SPU-LS2 Model Range for Reference
The parameters above are typical for refrigerator/freezer insulation. For the full SPU-LS2 low-pressure model range (roughly 15-2,500 g per shot) used across applications, see the specification table on the Low-Pressure PU Foam Machine page and confirm the exact model with our engineers once cabinet size and target density are set.
Watch the Refrigerator Foaming Line
▶ Watch the Refrigerator Production Line on YouTubeConfiguration Decisions
| Decision | Why it changes the equipment scope |
|---|---|
| Cabinet range | Door/box construction and size range set the required flow and mold/fixture count. |
| Target density | Typically 35-45 kg/m³ for cabinet insulation; affects ratio control and material system. |
| Units per shift | Determines whether one dispensing position and fixture set is sufficient. |
| Formulation switching | Frequent formulation or model changes call for more PLC recipe slots and cleaning capability. |
What Changes the Quotation
Price and lead time depend on the flow range, tank configuration, mold/fixture strategy, PLC recipe requirements and factory utilities. A useful quotation starts with the cabinet specification and production target, not only the words “low-pressure machine.”
FAQs
Does this machine include the refrigerator molds?
Not automatically. The foaming machine meters and mixes the material; refrigerator/freezer molds are quoted separately based on cabinet dimensions.
Is a low-pressure machine suitable for continuous refrigerator production?
It can support continuous production, but low-pressure equipment is typically selected for flexible, lower-to-medium volume lines or frequent model changes. For high-volume, highly automated lines, a high-pressure refrigerator machine is usually preferred.
Can the machine run multiple cabinet sizes?
Yes, within the flow range of the selected model — the modular design and PLC recipe storage support switching between refrigerator models.
What should be sent for a useful quotation?
Cabinet drawing and size range, target foam density, target units per shift, and factory voltage/utilities.
Reference Application
Yongjia machines in this configuration are supplied for refrigerator and freezer insulation production. Exact specification and output depend on your formulation and mold — contact our engineering team for a configuration matched to your project.
contact us
get in touch with yongjia polyurethane
Attention
Monday to Friday
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Phone
+86 13656166310
+86 13606167128
info@pufoammachine.com