Low-Pressure PU Foaming Machine | Self-Skinning PU Seats
Low‑pressure PU system for self‑skinning seats & headrests, with hard‑skin soft‑core structure, ±0.3% accuracy, PLC control, and ultra‑low VOC eco‑friendly production.
Discharge Flow Rate
50～300 g/s
Mix Ratio (A:B)
1:1～1:4 (adjustable)
Mixing Head Speed
5,200 rpm (adjustable)
Metering Accuracy
±0.3%
Product Overview
The HF‑LPM‑1A1B‑A is a low‑pressure PU system for self‑skinning seats & headrests, with hard outer skin, soft micro‑elastic core, ±0.3% accuracy, and PLC automation.
The HF-LPM-1A1B-A is a low-pressure PU foaming system for self-skinning seats and headrests, forming a hard, wear-resistant outer skin with a soft micro-elastic core in a single molding cycle. It serves passenger cars, motorcycles, office chairs, wheelchairs and electric mobility scooters. Precise ratio and flow control improve pressure distribution by 30% and reduce weight by 15%. The machine features a 200L tank, discharge flow of 50–300 g/s, adjustable A:B ratio of 1:1–1:4, and a mixing head speed of 5,200 rpm. Precision gear pumps with closed-loop VFD control maintain ±0.3% accuracy for bubble-free mixing. The PLC touchscreen monitors pouring, cleaning and air purging in real time; multiple formulas switch with one tap, and the self-cleaning mixing head enables color changes without shutdown. Solvent-free PU delivers near-zero VOC and Class B1 flame retardancy, complying with national and EU standards. Compact design supports long-arm or rotary carousel lines with modular expansion.
Production Workflow
Material Preparation & Recipe Selection
Load polyol and isocyanate into 200L tanks; select stored seat formula on PLC touch screen; set A:B ratio (1:1‑1:4) and flow (50‑300 g/s).
Precision Metering & Mixing
Gear metering pumps with closed‑loop control deliver ±0.3% accuracy; mixing head homogenizes material at 5,200 rpm for bubble‑free output.
Self‑Skinning Pouring & Molding
Material is poured into the mold; outer skin densifies while inner core remains soft and micro‑cellular—forming the hard‑skin/soft‑core structure in one cycle.
Demolding, Self‑Cleaning & Next Cycle
Open mold; remove finished seat/headrest; self‑cleaning mixing head prepares for next pour without shutdown for color or material switching.
Technical Specifications
Specifications are based on standard configurations. Customizable component counts (2‑6), modular line configurations, and robotic arm integration available.
| Technical Parameter | HF-LPM-1A1B-A |
|---|---|
| Discharge Flow Rate | 50–300 g/s |
| Raw Material Mix Ratio | A:B = 1:1–4 (adjustable) |
| Tank Volume | 200 L |
| Total Motor Power | 11 kW |
| Mixing Head Rotational Speed | 5,200 rpm (adjustable) |
| Metering Accuracy | ±0.3% |
| Core Features | Hard-skin soft-core comfort, long service life, one-tap flexible production, low VOC, eco-friendly |
| Warranty Period | 1 year |
| Net Weight | 1,000 kg |
| Certifications | Confirm applicable documents for the quoted configuration |
| Brand Name | Haifeng |
Key Advantages
Six engineering and production benefits that deliver comfortable, durable self‑skinning seats with precision control, flexible automation, and eco‑friendly performance.
Comfortable & Supportive Hard‑Skin Soft‑Core Design
Precisely controlled injection ratio forms dense, wear‑resistant outer skin and soft micro‑elastic inner core in one cycle. Improves pressure distribution by 30% and reduces weight by 15% while preventing sagging.
Automated Flexible Production with One‑Tap Switching
PLC touchscreen with multi‑formula storage enables one‑tap recipe recall. Self‑cleaning mixing head allows color/material switching without shutdown, greatly boosting flexible production efficiency.
Precision Metering for Superior Material Performance
Gear metering pumps with closed‑loop VFD control maintain ±0.3% accuracy, ensuring fully homogenized, bubble‑free mixing that eliminates ratio‑driven performance degradation.
Extended Service Life with Outstanding Anti‑Aging Performance
Produced PU material offers excellent rebound, compression resistance, and anti‑aging properties, extending service life by 60% compared to conventional products—ideal for high‑intensity passenger and shared seating.
Ultra‑Low VOC Eco‑Friendly Production
Solvent‑free PU systems deliver near‑zero VOC emissions and Class B1 flame retardancy, complying with national and EU standards, eliminating product return and recall risks.
Flexible Modular Investment & Customizable Line Configuration
Compact structure supports long‑arm single‑operator or rotary carousel fully automatic lines. Modular expansion enables phased investment as orders grow, from small‑batch trials to mass production.
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