Cold Storage Plastic Pallets: Technical Requirements, Standards and How to Choose

Cold storage plastic pallets must be made of virgin HDPE: recycled PP turns brittle below 0C and cannot be used in freezer or blast-freezer rooms. Virgin HDPE stays tough from -50C to +90C, covering every cold store from chilled rooms to deep-freeze. Food stores under HACCP, ISO 22000 and BRC also require light-coloured pallets (blue or green) for foreign-body control, an open mesh deck for drainage and airflow, and a rack load of at least 600-800 kg because frozen goods are heavy and stacked several rack levels high. This guide explains why the material decides everything and how to choose the right cold storage pallet by temperature range and industry standard.

In 15 years advising B2B businesses in northern Vietnam on pallet solutions, I have seen many cold stores buy recycled PP pallets by mistake because they cost 30-40 percent less. After 3-6 months the pallets begin cracking at the feet and splitting on the deck from thermal cycling, and the whole batch has to be replaced, costing far more than buying the right type from the start.

This article covers the material requirement by temperature range, how HACCP, ISO 22000 and BRC affect pallet selection, a comparison of suitable types, and four common mistakes to avoid.

Why cold storage requires virgin HDPE, not recycled PP

The answer lies in the molecular structure and mechanical behaviour of each plastic at low temperature. PP (Polypropylene) has a brittle point around 0C to -10C, meaning that below this threshold it loses flexibility and becomes glass-like. A light impact from forklift tines or falling goods at -15C to -25C can snap a PP pallet foot instantly. With a cold store holding frozen seafood weighing hundreds of kg per pallet, this is a serious collapse risk.

Virgin HDPE has a brittle point around -50C to -100C depending on grade, staying fully tough and impact-resistant across the entire temperature range of commercial cold storage. To understand more about the material, see what virgin HDPE plastic is and its use in pallet production.

Pallet requirements by cold store type

Not every cold store is the same. Different operating temperatures lead to different requirements for material, design and hygiene. The table below summarises real requirements from export cold stores in the Hanoi, Hai Phong and Bac Ninh area that ICD supplies pallets to.

How HACCP, ISO 22000 and BRC affect pallet selection

If your cold store applies or is preparing for HACCP, ISO 22000 or BRC certification, the pallet is not only a technical issue but a compliance one. Auditors inspect the pallets in the store directly and may require full replacement if they do not meet the standard.

• Under HACCP and Decree 15/2018/ND-CP, materials in indirect contact with food (including pallets) must be virgin food-grade plastic with a smooth surface that holds no water and leaches no chemicals into food. Recycled PP and recycled HDPE fail this requirement because the origin of the plastic resin cannot be controlled. See what HACCP is.
• ISO 22000:2018 requires the pallet to be recorded in the Prerequisite Programme (PRP): production material, periodic cleaning schedule and disposal conditions when damaged. When buying pallets for an ISO 22000 store, you need a supplier able to issue a certificate of virgin resin origin, not just a product catalogue.
• BRC Global Standard adds a colour requirement. Under the foreign-body control principle of colour contrast, pallets in food-contact areas must be light-coloured (usually blue or green) so dark plastic fragments are easy to spot if they fall into food. Black pallets, even virgin HDPE, cannot be used in the food area of a BRC-certified store.

ICD Viet Nam supplies complete technical documentation with cold storage pallets: certificate of virgin resin origin, technical datasheet, and CO/CQ as required by GDP/GMP pharmaceutical inspection.

Plastic pallet types suited to cold storage and when to use each

There is no single cold storage pallet that suits every application. The choice depends on the store type, forklift equipment, racking system and specific hygiene requirements.

Mesh-deck 4-way entry plastic pallet (most common)

This is the most widely used type in commercial cold storage. The open mesh deck lets cold air circulate through the pallet, helping freeze goods evenly and shortening freezing time. Water from thawing goods drains to the floor easily rather than pooling on the deck and causing slipping or ice build-up. Four-way forklift entry gives flexible handling in the tight space of a cold store.

Suitable for: frozen seafood stores, processed food stores, chilled produce stores. Not suitable for: small loose items that can fall through the mesh holes, which need an added liner sheet or a plastic crate placed on the pallet.

Solid one-piece plastic pallet for blast freezing

A closed flat deck with no gaps carries load most evenly and offers superior rigidity at extreme low temperatures. It is typically used in blast-freeze stores at -30C to -50C where the highest mechanical strength is required. Drawbacks: it is heavier and less ventilated than a mesh deck, and water cannot drain, so it needs more frequent cleaning.

Cold storage pallet with selective racking

Cold stores with selective or drive-in racking usually require pallets with high rack load, typically 600 to 1,000 kg, because heavy frozen goods are stacked 3-5 rack levels high. The ICD cold storage pallet in 1200x1000x145mm blue is the most popular model for this application, with an 800 kg rack load and 4-way compatibility with hand pallet trucks and electric forklifts.

Common cold storage plastic pallet sizes in Vietnam

Cold stores in Vietnam, especially seafood export stores, usually use standard sizes to optimise refrigerated containers and imported racking systems. The two most common sizes:

Four common mistakes when choosing pallets for cold storage

The mistakes below all carry a real cost, from replacing the whole pallet fleet to failing a food audit.

• Mistake 1 - Buying recycled PP because it is 30-40 percent cheaper: This is the most common and most costly mistake. Recycled PP begins to crack after 3-6 months in a freezer store. The cost of replacing 200-500 pallets plus a collapse incident in the store is usually 5-10 times the initial saving. Solution: always ask the supplier for the specific plastic type and require a virgin HDPE certificate before signing the contract.
• Mistake 2 - Using black pallets in the food area of a BRC or FSSC 22000 store: Black pallets cannot be detected when a plastic fragment falls into light-coloured food. The result is a failed audit or a full pallet replacement of the food area right before the assessment. Always confirm the colour required by the certification system you apply before ordering.
• Mistake 3 - Choosing an insufficient rack load: Frozen goods are far heavier than dry goods; one pallet of frozen seafood can weigh 800-1,000 kg. Using a pallet rated for 500 kg rack load on 3-level racking is nearly double the limit. After a few months the pallet sags and the rack beam shifts, with rack repair and pallet replacement costing tens of millions of dong.
• Mistake 4 - Not requesting technical documentation for a GDP pharma store: Pharma stores under Circular 36/2018/TT-BYT require all equipment in the store to have supplier records in the QMS. Buying pallets from a supplier without a resin origin certificate and technical datasheet means the GDP file cannot be completed.

Conclusion

Choosing the right cold storage plastic pallet affects warehouse operating safety, equipment lifespan and the ability to achieve quality certification. The basic rule: freezer and blast-freeze stores require virgin HDPE with no exception. Food stores under HACCP, ISO 22000 or BRC add requirements for colour and origin traceability. Rack load must be calculated against the real weight of frozen goods.

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Frequently asked questions

What temperature can a cold storage plastic pallet withstand?

A virgin HDPE plastic pallet withstands -50C to +90C, covering the entire commercial cold store range from chilled (+2C to +8C) to blast freezer (-30C to -50C). Virgin PP only withstands about -5C to -15C before turning brittle, and recycled PP has a brittle point near 0C, making it entirely unsuitable for freezer stores. When buying, always confirm the material is virgin HDPE and request the brittle point in the technical datasheet.

Does a cold storage pallet need to be HACCP certified?

The pallet itself is not HACCP certified; that certification applies to the facility management system. However, for the store to meet HACCP, the pallet must satisfy material requirements: virgin food-grade HDPE, no leaching, an easy-to-clean surface and a light colour for foreign-body control. The supplier needs a virgin resin origin certificate to file in the PRP records.

What colour cold storage pallet is suitable?

Stores applying BRC, FSSC 22000 or with foreign-body control requirements should use blue or green in food-contact areas. Ordinary industrial cold stores with no special colour requirement can use black or grey. ICD Viet Nam supplies virgin HDPE cold storage pallets in blue, green, black and grey to suit each store.

When should I buy new cold storage pallets instead of used ones?

Food stores meeting BRC or FSSC 22000 should use new pallets or used pallets with full origin traceability records. For industrial cold stores without food audits, grade-A used HDPE pallets (90-95 percent condition) from a reputable supplier with input inspection save 40-50 percent of cost while still meeting technical requirements.

How is an ICD cold storage pallet different from an ordinary pallet?

The ICD cold storage pallet uses 100 percent virgin HDPE (no recycled blend), an open mesh deck for airflow, and 4-way entry compatible with hand pallet trucks and electric forklifts. Common sizes are 1200x1000x145mm and 1100x1100x125mm. It comes with a virgin resin origin certificate and technical datasheet meeting the record-keeping requirements of HACCP, ISO 22000 and pharmaceutical GDP.

Contact and cold storage pallet quote from ICD