Spray Foam Equipment for Cold Storage Insulation — CE / ATEX (cyclopentane spray config available)-certified pu foaming machines by UREXCEED. Lead time 30 – 45 days, MOQ 1 set.

Spray Foam Equipment for Cold Storage Insulation

Name: Spray Foam Equipment for Cold Storage Insulation
Brand: UREXCEED
Availability: InStock

Spray foam for the refrigerator cabinets a high-pressure machine can't reach — oversized supermarket islands, curved commercial freezers, thick-wall ultra-low-temp boxes, on-site liner repair. 5–20 kg/min.

Czas realizacji

30 – 45 days

Min. zamówienie

1 set

Engineering reply within 24 hours

Quote + spec sheet + tailored sizing recommendation. WhatsApp answered 9 am–6 pm Beijing time.

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Specyfikacja techniczna

Output: 5 – 20 kg/min (typical refrigerator spray rate: 8–12 kg/min)
Output Pressure: 100 – 160 bar at the gun
Heating: Electric hose heating, full-length 80°C ±3°C
Hose Length: 10 / 20 / 40 / 60 m configurable
Gun Spray Pattern: Adjustable fan, 15° – 60° cone, single-pass thickness 10 – 25 mm
Metering Ratio Accuracy: ±1.5% (electronic proportioner)
Recipe Compatibility: Spray-grade polyol (high viscosity, fast gel, 3–5s tack-free)
Operating Window: 15 – 35°C ambient, < 75% relative humidity (ideal cabinet substrate ≥ 18°C)
Configuration: Mobile cart / 20' container-mounted / fixed in-line — pick by factory layout
Operator Safety Pack: Supplied-air respirator, Tyvek suit, butyl gloves, MDI vapor detector
Power: 380V / 480V · 50/60Hz, 8 – 16 kW (depending on heating zones)
Daily Spray Area (50mm thick): 50 – 120 m² per operator per shift

Zastosowania

Large supermarket island freezer (2–4 m, irregular inner shells)
Long open-top commercial display cabinet (8–12 m, single piece)
Curved / dome-shaped commercial freezer inner walls
Pharmaceutical / vaccine ultra-low-temp freezer (-86°C, thick-wall 50–80 mm)
On-site repair of refrigerator inner liner defects (bubbles, sink marks before export)
Large chest freezer (800L+) — too big for standard moulds
Refrigerated truck body insulation (sibling product line at refrigerator factories)
Cold room panel & joint foaming

When a refrigerator factory actually needs a spray foam machine

Most refrigerators get foamed in closed moulds with a high-pressure machine. Spray foam is for the cabinets where the closed-mould approach hits a wall. Four clear cases:

Oversized cabinets

Cabinet too big for a practical mould. Supermarket island freezers, 2–4 m long open-top display cases, walk-in commercial cabinets. A 4m steel mould costs USD 150K+ and weighs tons. Spray foam handles the same job at a fraction of the capex.

Irregular geometry

Irregular or curved geometry. Curved-front commercial freezers, dome-shaped display refrigerators, faceted product-specific cabinets where a closed mould would need 6+ parting surfaces.

Thick walls

Thick walls (over 50mm). Pharmaceutical / vaccine ultra-low-temperature freezers (-86°C) need 60–80mm of insulation. A closed mould at that thickness has cure-time and stress problems. Spray-applied multi-layer foam handles thick walls cleanly.

On-site work

On-site work. Refrigerator inner liner defect repair (bubbles, sink marks discovered before export), retrofit insulation on existing cabinets, custom one-off cold rooms attached to refrigerator factories.

Our spray gun and heated hose system

The gun and the heated hose are the parts of the machine where most quality problems start. We use proven, commercially-available components for both.

PU spray foam machine system flow — drum, proportioner, heated hose, gun, multi-pass cabinet wall build

Spray gun

Spray gun: industrial-grade, comparable in design to Graco Fusion / Wagner GX class. Air-purge head (no solvent flush needed), variable fan pattern 15°–60°, replaceable mix chamber. Replacement gun tips and mix chambers are stocked in our spare parts depots.

Heated hose

Heated hose: full-length electric heating with PID control, ±3°C across the entire hose length. Available in 10 / 20 / 40 / 60m configurations. Properly heated hose = consistent foam; a "cold spot" in the hose causes poor mixing and bad cell structure.

Electronic proportioner

Electronic proportioner with ±1.5% ratio accuracy. Polyol-to-ISO ratio is critical for spray foam — drift outside ±2% and you get under-cured surface foam (sticky, weak) or over-cured (brittle, dusty).

Tank feed

Drum-direct or day-tank feed. Drum-direct is simpler (drop pumps into 200L drums); day-tank is needed for high-volume continuous spraying or when you're drawing from bulk storage.

PLC control

PLC with recipe storage (typically 10–20 recipes). Stores temperature, pressure, ratio setpoints per polyol grade.

Five refrigerator scenarios we ship this machine for most

Here's where this machine actually goes in refrigerator factories — these account for ~80% of the units we ship.

Supermarket island freezers

Supermarket island freezers (open-top, 2–4 m long). Foam volume 30–80 kg per cabinet, sprayed in 30–60 minutes. Typical sprayer output 100 island cabinets per week, single operator.

Long commercial displays

Long commercial display cabinets (8–12 m single-piece, retail freezer aisles). Foam volume 80–150 kg per cabinet. These are often single-piece custom orders, where a mould investment makes no sense.

Ultra-low-temp pharma freezers

Pharmaceutical / vaccine ultra-low-temperature freezers (-86°C, thick-wall 50–80 mm). Foam volume 40–70 kg per cabinet, sprayed in 2–4 layers.

Inner liner repair

Inner liner defect repair on finished refrigerators. Quick spot-spray of bubbles, voids, sink marks before export. Recovers 2–5% of cabinets that would otherwise be scrapped — significant on a 500K-unit/year factory.

Large chest freezers

Large chest freezers (800L+) and walk-in commercial cabinets where a closed mould would weigh too much to be practical.

Spray vs press foam — the honest comparison

Spray is a different process. Different cell structure, different density, different k-factor. Worth being clear about what you gain and lose.

Metric	Spray-applied	Press / mould foamed
k-factor (W/m·K)	0.022 – 0.024	0.018 – 0.020
Molded density (kg/m³)	40 – 50	32 – 38
Closed cell content	88 – 92%	95%+
Cabinet wall thickness range	20 – 100 mm flexible	typically 35 – 60 mm
Setup cost per cabinet design	Low (no mould)	High (USD 30K – 200K mould)
Output rate	Slower (sprayer-limited)	Faster (mould cycle)

So: spray foam for cabinets where you can't practically build a mould or where you only need a few units of a design. Press foam for high-volume mainstream refrigerators. The slight loss in k-factor (about half an energy class) is the trade for the geometric flexibility.

Mobile, containerized, or stationary — three deployment patterns

How you deploy the machine inside (or outside) your factory matters as much as the machine spec itself.

Mobile cart

Mobile cart configuration. Whole machine on industrial wheels, 1.5 × 1 m footprint. Roll it to where the cabinet is, plug into a nearby socket and air supply. Best for low-volume operations where the cabinet doesn't fit through a doorway to the foaming room. Most popular for repair work and one-off custom cabinets.

Containerized

20' container-mounted configuration. The entire machine + air compressor + drum storage lives inside a shipping container. Drive the container to a temporary site (large display cabinet install at a supermarket, a custom cold room project), open the doors, run spray hoses out to the work zone. Used by refrigerator factories that do on-site installation work.

Stationary in-line

Stationary in-line configuration. Machine bolted to the factory floor, multiple spray hoses fed to dedicated spray booths. Best for refrigerator factories that have a dedicated spray foam product line (e.g. supermarket island freezers as a continuous product).

MDI exposure and operator safety — the biggest single risk

Of all the equipment in a refrigerator factory, the spray foam machine has the highest occupational health risk. Atomized MDI aerosol is genuinely hazardous to lungs. Done right it's manageable; done wrong it causes long-term respiratory damage. We don't sell this machine without the safety pack.

Supplied-air respirator

Supplied-air respirator (positive-pressure full-face hood with hose-fed clean air from outside the spray zone). NIOSH-approved. This is the only respirator that reliably keeps MDI exposure below ACGIH TLV (5 ppb). Filter cartridges are not sufficient for sustained spraying.

PPE (Tyvek, gloves, boots)

Tyvek coverall, butyl gloves, boot covers. Disposable, replaced every shift. MDI penetrates ordinary cotton/nylon fabric.

MDI vapor monitor

Real-time MDI vapor monitor at the spray zone perimeter. Calibrated to ACGIH TLV. Triggers alarm if vapor leaks outside the spray booth (usually means ventilation failure).

Spray booth ventilation

Spray booth ventilation design spec we provide: minimum 6 air changes per hour, exhaust at floor level (MDI aerosol settles), inlet air at ceiling level. Booth pressure slightly negative to surroundings.

Medical surveillance

Recommended (and required in many EU countries) annual medical surveillance for sprayers — lung function testing, respiratory symptom questionnaire. We can connect you with occupational health providers.

Operator training

Operator training covers: putting on PPE in correct order, breathing apparatus checks, what to do if a hose fails or the monitor alarms, decontamination procedure at end of shift. Initial training 3–5 days, refresher every 6 months.

Compatible PU formulation — spray-grade is different

You can't use your high-pressure cyclopentane polyol on a spray machine. Spray foam needs a chemistry that gels in 3–5 seconds (not 40–60), has higher viscosity (so it sticks to vertical walls instead of running down), and uses a different surfactant balance. We supply the matching system.

Fast gel time

Cream 2–4s, gel 3–6s, tack-free 8–15s. About 8–10× faster than press-foam recipes. This is what lets you build up 50mm of foam in 2–3 passes without it sagging.

Higher viscosity

Polyol viscosity 6,000–12,000 mPa·s (vs 3,000–6,000 for press foam). Higher viscosity = better vertical-wall hang.

Higher density

Free-rise density 35–45 kg/m³ (vs 22–28 for press foam). Higher density compensates for the lower cell-structure quality.

HFO over cyclopentane

HFC-245fa or HFO-1233zd(E) are the standard blowing agents for spray. Cyclopentane is technically possible but the open-air spraying creates an explosion risk that's much harder to mitigate than in a closed-mould setup. Most spray operations use HFO.

Browse our refrigerator-grade PU raw material system → (spray-grade variants available)

Operator training — this isn't a "press the button" machine

Spray foam is a craft skill. A good sprayer's output is double a beginner's, and quality is much more consistent. We send a trainer to your factory for 2 weeks of supervised training before unattended production.

Spray distance

Spray distance: 30 cm ±5 from substrate. Too close → uneven thickness, splash-back. Too far → cold spots, poor adhesion.

Fan angle

Fan angle: matched to substrate. Wide fan (50–60°) for flat walls. Narrow fan (15–25°) for corners and edges.

Pass overlap

Pass overlap: 50% with the previous pass. Less than 50% → striping pattern in finished foam. More → uneven thickness.

Multi-layer build

Multi-layer build: wait for previous layer to gel (touch test) before next pass. Typical wait 30–60s. Skipping this wait causes heat buildup, foam structure damage.

Pattern direction

Pattern direction: alternate orientation each layer (horizontal pass 1, vertical pass 2, horizontal pass 3). Helps even out thickness variance.

Production ramp

Production ramp: new sprayer reaches steady quality at about day 7. Full production speed about day 14. We stay through both stages.

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Cross-Sell · One-Partner Synergy

Pair This Foaming Machine With Moulds + Materials

Foaming machines run best on properly engineered moulds and calibrated raw materials. Buy together for full-line synergy.

Moulds

Refrigerator-Grade Moulds

Vacuum-forming moulds for inner liners + foaming moulds for cabinet/door — 30-year cluster network.

Learn more

Materials

PU Raw Materials

MDI + Polyol formulations matched to your machine output, density target, and local climate.

Learn more

Solution

Refrigerator Production Line

Cyclopentane high-pressure foaming is the heart of our turnkey refrigerator factory solutions.

Learn more

Service & Support

Warranty & Service

On-site intervention available in every region where we have delivered projects.

On-Site Installation

Our engineers fly to your factory to supervise installation, layout verification, and first-run production.

Commissioning + Tuning

Trial run + parameter tuning to your local raw material, climate, and target product spec — until throughput meets contract.

Operator Training

5-10 day on-site training for production team, QC, and maintenance — bilingual manuals + video tutorials provided.

3-Year Warranty + Spares

Core equipment 3-year warranty, electrical 2-year. Spare parts in stock with global express shipment 24h dispatch.

Global Service Footprint →

Często zadawane pytania

Spray vs press-foam — what do I lose, what do I gain?

You gain the ability to foam shapes a closed mould can't handle: long supermarket islands, curved commercial freezers, ultra-thick walls (50–80mm for medical -86°C cabinets), and on-site repair of finished cabinets. You lose about 0.003 W/m·K in k-factor (spray foam typically 0.022–0.024 vs press 0.018–0.020) and 5–10% in closed cell content. For commercial refrigeration where cabinet strength and geometry matter more than top-tier energy class, that trade-off is usually worth it.

My factory makes supermarket island freezers, 3 meters long. Spray or press?

At 3m, you're right at the threshold. A 3m closed mould is buildable but expensive (mould cost roughly USD 80–150K for that size, plus a larger HP machine). Spray foam on a 3m island typically takes 30–45 minutes per cabinet and uses 8–12 kg of foam — totally workable, much lower capex. If you're building 5,000+ islands a year, go press. Under 2,000, spray makes more sense.

How long does an operator need to train before spraying production cabinets?

A new sprayer needs 5–10 days of supervised practice before they're fan-pattern consistent. The key skills are spray distance (30 cm ±5), fan angle (matched to substrate width), overlap pattern (50% per pass), and feel for when a layer has gelled enough for the next pass. We send a trainer to your factory for the first 2 weeks of operation.

MDI vapor exposure — is this safe for my operators?

MDI exposure is the main occupational health concern with spray foam. We ship every machine with a supplied-air respirator (NIOSH-approved positive-pressure hood), Tyvek coverall, butyl gloves, and a real-time MDI vapor monitor calibrated to the ACGIH TLV of 5 parts per billion. We also recommend a ventilated spray room with at least 6 air changes per hour and exhaust at the floor (MDI vapor is heavier than air). With the standard pack used correctly, you stay well under occupational limits. Some EU customers also require annual medical surveillance for sprayers — happy to walk you through that.

How much foam can one operator spray per shift?

For 50mm thick refrigerator-grade foam: 50–120 m² per operator per 8-hour shift. The variance is mostly about cabinet geometry — long straight walls go fast, complex curves and edges slow you down. A two-operator team on the same machine roughly doubles output.

I need 50mm of foam thickness. How many passes?

For refrigerator-grade spray foam, the practical single-pass thickness is 15–25 mm depending on substrate temperature and gel time. So 50mm typically takes 2–3 passes with 30–60 seconds between each (let the previous layer reach gel before adding the next, otherwise heat buildup damages the cells). For 80mm ultra-thick (medical freezers), plan on 4 passes.

Does ambient temperature affect what we can spray?

Yes. Sweet spot is 18–30°C ambient with substrate temperature at least 18°C. Below 15°C the polyol viscosity climbs, atomization degrades and foam structure suffers. Above 35°C the gel time gets too fast and you risk poor inter-layer adhesion. If you're in a hot climate (Middle East, Southeast Asia), we recommend a temperature-controlled spray room. For cold-climate factories (Russia, Northeast China winter), pre-heat the room to 20°C before starting.

Can I use the same polyol system as my high-pressure cyclopentane machine?

No — spray needs a different polyol grade: higher viscosity (so it doesn't sag on vertical walls), faster gel (3–5s tack-free vs 60–80s on press), and different surfactant balance. We supply a dedicated spray-grade polyol that pairs with this machine, and we calibrate the recipe to your specific cabinet substrates and target thickness.

What's the annual spare-parts cost?

Budget about 5–8% of machine cost per year for routine wear: gun tips (replace every 50–80 hours of spraying), filter elements, mixing chamber inserts, hose heating elements (life ~3,000 hours). Major service (pump rebuild, heated hose replacement) every 3–4 years adds another 8–12%. We sell wear-parts kits in 6-month and 12-month packages.

Can I use this machine to repair the inner liner of a finished refrigerator that has a defect?

Yes — that's one of our top three use cases. Common scenarios: bubble defects in the cabinet foam, sink marks near the door frame, voids around the evaporator pocket. Operator spot-sprays the defect with 1–2 passes (typically 3–8 mm fill), trims excess after gel, and the cabinet is ready for QC re-test in 30–60 minutes. We've seen refrigerator factories recover 2–5% of pre-export cabinets this way that would otherwise be scrapped.

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