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We build portable icebox lines whose shells survive a 1.5 m drop on concrete — rotationally moulded, blow-moulded or injection-moulded ABS — with 42–48 kg/m³ PU cores for WHO PQS vaccine and medical cold-chain use. Tooling, foaming line and drop-test protocol from one supplier, for 10L – 600L coolers in outdoor recreation, vaccine transport, marine and fishery.

In one line

Proven on vaccine-transport cold chain — insulation performance certified down to 5-day passive hold at +40°C ambient.

Real Pains We Hear from Buyers — and What We Ship to Solve Each One

Four pains every portable-icebox factory founder brings us. Our line ships with the fix.

Pain 1

Outer shell drop-test fails — 1m drop cracks the rotomold or warps the corner

How we solve it

Drop-test failures cluster at the corners. Our rotomould tooling uses reinforced corner geometry + LLDPE-grade resin with impact-modifier blend. Shell wall thickness 3–6 mm uniformly. The rotomoulded LLDPE shells produced from the moulds we supply pass a 1.5 m drop on concrete with no cracking, including marine/fishery models on offshore deck. Injection-moulded ABS parts are a separate case: in high-impact grade with thickened corners they pass the same 1.5 m drop at room temperature, but impact strength falls off below 0°C, so we keep ABS to handles, latches, hinges and panels rather than frozen-payload shells.

Pain 2

Cooler holds ice 48 h on spec sheet but customers complain it melts in 24 h in real use

How we solve it

Real-world ice retention depends on PU foam k-factor, wall thickness, AND seal integrity — most factories miss the seal. Our line ships with a gasket seal compression test on every unit; foam wall thickness 30–80 mm with even fill; lid latch gives 35–50 N closing force. Field-measured ice retention: 5-day spec → 4.5–5 day actual (90% spec retention).

Pain 3

Plastic vs roto-foam vs PU-injected — buyer wants all 3 formats but I have no idea which moulds to buy first

How we solve it

Roto-foam is the volume sweet spot (60% of US/EU market). PU-injected is premium. Pure plastic is budget. We recommend starting with roto-foam tooling (USD 280K covering 4 SKUs across 30L–250L), then adding PU-injected tooling (USD 180K) once volume justifies it. Pure plastic line is a separate platform — usually not worth running on the same floor.

Pain 4

Pelican / Yeti-grade premium positioning needs perfect lid latch + carry handle — my latches break in field

How we solve it

Premium iceboxes win on hardware. Our line includes factory-fitted Sugatsune-grade stainless latches (200,000-cycle rated) + reinforced handle mount + lid hinge with corrosion-resistant pin. Pre-shipment QC tests every latch through 50 open/close cycles. Premium positioning vs commodity iceboxes adds USD 80–250 wholesale per unit.

İhtiyacınız Olan

Hardware & Accessories — Bundled with Main Equipment Orders
Hardware & Accessories

Hardware & Accessories — Bundled with Main Equipment Orders

Complementary hardware fabrication service — supplied alongside our main equipment orders (moulds / PU foaming / production line). Custom-fabricated per your drawings: 5 categories — hinges, brackets, rails & ladders, wire shelves & baskets, grid panels. Not a standalone product line. Consolidated into your main shipment.

Daha Fazla Bilgi
PU Foaming Line for Insulation Box Production
Production Lines

PU Foaming Line for Insulation Box Production

PU foaming module (machine + jigs + recipe) for factory owners building insulated transport boxes 10L–600L — vaccine cold-chain, meal-kit delivery, seafood export. Jig count sized to your daily output (50–2,000+ boxes/day). k=0.022 W/m·K, WHO PQS-ready recipe. Vacuum-forming + assembly + QC are your scope — we supply the BOM.

Daha Fazla Bilgi
Low-Pressure PU Foaming Machine
PU Foaming Machines

Low-Pressure PU Foaming Machine

Smaller, more flexible machine for wine cabinets, mini-bars, vaccine boxes and R&D pilots. Quick recipe switches when you run dozens of small cabinet variants. 5–250 g/s output.

Daha Fazla Bilgi
PU Raw Materials System
PU Raw Materials

PU Raw Materials System

We make refrigerator-grade PU systems — polyol blend, MDI, blowing agent, all formulated in our own plant. k-factor down to 0.018, density customizable, tuned to your cabinet and your line.

Daha Fazla Bilgi

Portable cold-retention engineering

Shell Process & Cold-Retention Design

Portable icebox segments split by use case. 4 axes adjust for outdoor / fishery / vaccine / medical positioning.

Format & process

Roto-foam (60% market, 4-SKU base mould USD 280K) / PU-injected (premium, +USD 180K) / pure plastic (separate platform).

Shell material

LLDPE (UV/saltwater for marine), HDPE (impact for outdoor), reinforced-corner geometry for 1.5 m drop test on concrete.

Insulation spec

Foam wall 30–80 mm. PU formulation tuned for ice-retention 24h / 48h / 5-day target.

Hardware grade

Sugatsune 200K-cycle stainless latches for premium positioning (Yeti-grade), or commodity hardware for entry segment.

Shared engineering reference

PU foam quality, testing and acceptance

Closed-cell ratio, density uniformity and thermal testing are documented once in our quality center.

View quality standards →

Application Scenarios

Portable iceboxes cover outdoor, fishery, cold-chain and medical use.

  • Outdoor camping cooler (Yeti-grade, 30–100 L)
  • Fishery icebox (marine-spec LLDPE 250–600 L)
  • Vaccine / blood cold-chain box (passive 24-48h retention)
  • Beverage cooler for events / catering (commercial 60 L)
  • Soft cooler / lunch box (commodity 5–20 L)
  • Pharmacy cold-chain shipper (regulated transport)

Questions factory owners ask us

Can injection-moulded ABS parts pass a 1.5 m drop test?
Yes, if the part is specified for it: a high-impact rubber-modified ABS grade, generous corner radii with a proper rib layout, and locally thickened corners and bosses. At room temperature such parts pass the 1.5 m flat, edge and corner drops on concrete. The real limit is cold — ABS notched impact strength falls steeply below 0°C, so after a −20°C soak results are marginal. For frozen-payload shells we specify LLDPE rotomould or PP instead, and use injection-moulded ABS for handles, latches, hinges, panels and liner brackets.
Which shell process do you recommend for medical / vaccine iceboxes?
Rotomoulded LLDPE outer shell, injection-moulded ABS hardware (handle, latch, hinge, control panel, liner brackets), and a PU foam core at 42–48 kg/m³ with 60–80 mm wall thickness for the 5-day passive hold WHO PQS asks for. ABS is chosen for the hardware because it moulds to tight tolerance, has no burrs, and tolerates repeated ethanol and isopropanol wipe-down. Blow moulding is a cost option for small 10–60 L boxes but the pinch-off line is the weak point in a drop.
Do you provide the drop-test report with the tooling?
Yes. Trial units from the commissioning batch are drop-tested on site with your engineers: 1.5 m free fall onto concrete following the ASTM D5276 method and ISTA 1A sequence — one flat drop, three edge, three corner — on empty, fully loaded and −20°C pre-soaked samples. Pass criteria are no crack or through-split, hinge and latch still functional, gasket still sealing on compression check. The signed report is part of the acceptance package.
What's the typical investment for a portable icebox production line?
USD 600K–1.1M for 1,000 units/day including foaming moulds (USD 180K–300K covering 5 size variants), low-pressure PU foaming machine (USD 120K–180K), insulation-box assembly line (USD 220K–350K), and testing equipment (USD 80K–150K). Rotomolding outer shells typically out-sourced unless volume exceeds 5,000 units/day.
Can you produce active-cooling iceboxes (12V DC powered)?
Yes. Active iceboxes integrate a small 12V DC compressor (or Peltier) into the standard insulation cabinet — adds USD 60–120 per unit BOM. We supply the cabinet tooling; compressor sourcing from our partner refrigeration suppliers. Common in US RV market and Australia outdoor segment.
Do you support EVA-foam outdoor coolers (lower-cost alternative)?
We focus on PU-foam tooling (premium insulation), not EVA-foam (entry-level). EVA-foam coolers use thermoforming, not PU foaming — different tooling category. If you need entry-level coolers alongside premium PU lines, we can refer EVA-foam tooling partners but won't supply EVA tooling ourselves.
What's the lead time for vaccine-cold-chain qualified iceboxes?
Equipment delivery follows standard timeline (5–7 months contract to commissioning). WHO PQS qualification testing — separate from equipment supply — typically adds 4–6 months for the brand owner to complete with their accredited lab. Plan total program timeline 12–15 months from start to PQS-listed product launch.
Can you supply tooling for marine / fishery iceboxes specifically?
Yes. Marine spec uses LLDPE or HDPE outer shells (UV/saltwater resistance), drain plug tooling (sized for offshore deck water management), and reinforced corner moulds for impact resistance. Cabin sizes typically 250–600L. Major buyers in Vietnam, Chile, Norway and Indonesia fisheries.

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 →

Cross-Sell · One-Partner Synergy

Pair this line with the rest of the factory

The product groups our refrigerator-factory customers buy alongside this line — for full-line synergy and one-partner accountability.

High-Pressure PU Foaming Machines
Foaming

High-Pressure PU Foaming Machines

Cyclopentane / 2-component / 3-component models. Cyclopentane is the refrigerator industry standard.

Learn more
Refrigerator-grade Moulds
Moulds

Refrigerator-grade Moulds

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

Learn more
PU Raw Materials System
Materials

PU Raw Materials System

BASF / Covestro / Wanhua MDI + Polyol — calibrated to your climate, foam density, and cycle time.

Learn more

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