Low-Pressure PU Foaming Machine | Memory and Neck Pillows
Low‑pressure PU system for memory pillows, neck pillows & hydrophilic cotton cores, with 3A3B six‑tank multi‑formula design, ±0.3% accuracy, and solvent‑free cleaning.
Pouring Rate
50～1000 g/s
Mix Ratio (A:B)
1:1～1:4 (continuously adjustable)
Mixing Head Speed
3,000‑4,500 r/min (common)
Metering Accuracy
≤ ±0.3% full range
Product Overview
The HF‑LPM‑3A3B‑Soft‑Pillow is a low‑pressure PU system for memory pillows, with 3A3B six‑tank multi‑formula storage and fine‑flow control for soft, consistent cores.
The HF-LPM-3A3B-Soft-Pillow is a low-pressure PU foaming machine developed for soft sponge pillow cores—memory pillows, neck pillows, hydrophilic cotton pillows, and children's pillows. Its 3A3B six-tank configuration with 120L/220L capacity options enables multi-formula storage and one-key switching between slow-rebound and hydrophilic cotton formulations for multi-category production. It delivers a pouring rate of 50–1000 g/s with a continuously adjustable A:B ratio of 1:1–1:4. The mixing head runs up to 8,600 r/min, with a typical range of 3,000–4,500 r/min for soft foam. Dynamic metering accuracy is maintained at ≤±0.3% full range, ensuring consistent material proportioning. The special soft foaming process produces fine, uniform cells with a soft hand feel, ensuring comfort and quality across batches. Small-flow fine pouring control suits small pillow molds, reducing waste and improving material utilization. The automatic air-purge cleaning system is solvent-free and eco-friendly, simplifying maintenance, while low power consumption (5.5–7.5 kW) makes it cost-effective for multi-category pillow core production.
Production Workflow
Material & Recipe Preparation
Load polyol and isocyanate into the selected 3A3B tanks (120L or 220L); choose stored recipe (memory, hydrophilic, etc.) on PLC touch screen.
Ratio & Flow Setting
Set A:B ratio (1:1‑1:4) and pouring rate (50‑1000 g/s) per pillow type and mold size.
Fine‑Flow Pouring & Foaming
Mixed PU material is poured into pillow molds at controlled low flow; material foams and cures to form soft, fine‑cell core.
Demolding & Air‑Purge Cleaning
Open mold after curing; remove finished pillow core; automatic air‑purge cleaning cleans the mixing head without solvents.
Technical Specifications
Specifications are based on standard configurations at ambient conditions. Tank capacities and mixing head speeds can be customized upon request.
| Technical Parameter | HF-LPM-3A3B-Soft-Pillow |
|---|---|
| Pouring Rate | 50~1000g/s |
| Mixing Ratio | 1:1~1:4 continuously adjustable |
| Tank Capacity | 120/220L |
| Mixing Head Speed | 0~8600r/min (Common: 3000~4500r/min) |
| Dynamic Metering Accuracy | ≤±0.3% (Full range) |
| Tank Configuration | 3A3B Six tanks |
| Cleaning System | Automatic air-purge cleaning (solvent-free, eco-friendly) |
| Power | 5.5~7.5kW |
| Warranty | 1 year |
| Certifications | Confirm applicable documents for the quoted configuration |
Key Advantages
Six engineering benefits that deliver flexible, high‑quality pillow core production with fine cells, soft feel, and low material waste.
3A3B Six‑Tank Multi‑Formula Design
Stores slow‑rebound, hydrophilic cotton, and other pillow formulations simultaneously; one‑key switching enables rapid changeover between different pillow types without lengthy cleaning.
Small‑Flow Fine Pouring Control
Precise low‑flow pouring (down to 50 g/s) perfectly suits small pillow molds, reducing material waste and improving raw material utilization.
Special Soft Foaming Process
Produces fine, uniform cells with a soft, comfortable hand feel, ensuring consistent quality and comfort across all pillow cores.
Small Tank Capacity + High‑Precision Metering
120L/220L tanks enable fast material changes; ≤±0.3% metering accuracy ensures stable ratio control even with frequent formula switching—ideal for sample trials.
Solvent‑Free Air‑Purge Cleaning
Automatic air‑purge system eliminates chemical solvents, reducing environmental impact and simplifying maintenance for frequent product changeovers.
Cost‑Effective for Small‑Batch Flexible Production
Low power consumption (5.5‑7.5 kW) and compact design make it affordable for small‑to‑medium pillow factories, supporting multi‑category production with minimal operating costs.
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