Meta description: Cold storage stretch film is a low-temperature PE stretch film engineered to keep its cling, stretch and holding force inside chillers, freezers and reefer containers. This buyer’s guide covers freezer-grade film types, specifications, cost per pallet, inspection and supplier selection.
Cold storage stretch film is a polyethylene pallet wrap formulated to keep its cling, elongation and load-holding force after the wrapped pallet moves into a chiller, a freezer, or a reefer container. Standard warehouse film is designed for ambient conditions, so importers shipping frozen food or chilled dairy need a film that still grips at low temperature instead of relaxing, slipping, or tearing during transport.
Table of Contents
- What Is Cold Storage Stretch Film?
- How Is Cold Storage Stretch Film Manufactured?
- What Types of Cold Storage Stretch Film Are Available?
- Comparison of Ambient and Cold-Temperature Stretch Film
- Common Applications of Cold Storage Stretch Film
- What Specifications Should Buyers Check?
- Cost and Efficiency: Compare by Cost per Pallet
- How to Inspect Cold Storage Stretch Film Quality
- What Information Should Be Included in an RFQ?
- How to Choose a Reliable Supplier
- Frequently Asked Questions
- Source Cold Storage Stretch Film from Pefilmpack
What Is Cold Storage Stretch Film?
Cold storage stretch film is a stretch wrap made from polyethylene resins and additives selected to perform at refrigeration and freezer temperatures, typically from around 0 °C down to about -20 °C or lower. In trade it is also sold as freezer-grade film, cold-room film, or cold chain stretch film.
Cold conditions change film behavior in three ways: cling drops as the tack layer stiffens, elongation falls as the polymer becomes less flexible, and puncture resistance weakens as the film turns brittle.
For buyers these changes translate directly into money. A load that wraps cleanly in a warm warehouse can unwind in a cold store, let cartons shift in a reefer container, or tear at the pallet corners — damage that costs far more than the film itself.
How Is Cold Storage Stretch Film Manufactured?
Production follows the standard stretch film route, but the resin and additive package is tuned for low temperature. Each step affects a purchasing metric you should verify.
- Resin selection. Metallocene LLDPE and LDPE blends balance low-temperature toughness against processability.
- Additive and tackifier formulation. Tackifiers are chosen to stay sticky when cold. This is the biggest driver of low-temperature cling.
- Extrusion. Blown or cast extrusion on a chill roll; multi-layer coextrusion lets the cling layer and strength layer be optimized separately.
- Thickness control. Inline gauging holds thickness within tolerance across the web.
- Cooling and setting. Controlled cooling reduces internal stress and edge curl.
- Slitting and rewinding. Jumbo rolls are slit to width and rewound to the ordered roll weight, with one-sided or two-sided cling.
- Core insertion and finishing. Paper cores are inserted to the requested inner diameter and end faces are checked.
- Inspection and export packing. Rolls are spot-checked for thickness, width, and appearance, then cartoned or palletized for container loading.
What Types of Cold Storage Stretch Film Are Available?
Freezer-Grade Machine Film
A thin machine film for automatic wrappers working in chilled or frozen areas. Thickness commonly falls in the 12–23 micron range, with high elongation so the machine can pre-stretch it and still hold the load.
Cold-Room Hand Film
Supplied in lighter rolls with 2″ (50 mm) or 3″ (76 mm) cores for manual wrapping inside a cold store, typically around 15–23 micron. It fits smaller cold stores and mixed pallet sizes.
High-Cling Low-Temperature Film
A stronger one-sided cling layer lets the wrap seal to itself when cold without the operator pulling hard. A common fix where standard film holds in the warehouse but fails overnight in the freezer.
Colored and Opaque Cold Chain Film
Black, white, and blue films support load segregation and light protection in cold stores. Confirm that pigment loading has not reduced low-temperature toughness.
Pre-Stretched Cold Wrap Film
Pre-stretched during production, so each roll delivers more usable length per kilogram and requires less effort from hand wrappers.
Comparison of Ambient and Cold-Temperature Stretch Film
| Feature | Standard Ambient Film | Cold-Temperature / Freezer Film |
|---|---|---|
| Resin focus | Standard LLDPE / LDPE blends | Metallocene-rich blends for low-temperature toughness |
| Tack layer | Tuned for room temperature | Tuned to stay tacky when cold |
| Typical thickness | Commonly 12–23 micron | Commonly 15–23 micron |
| Elongation | Good at ambient conditions | Retains stretch at low temperature |
| Puncture resistance | Adequate for cartons | Higher dart impact for frozen, sharp edges |
| Best application | Dry warehouse, room-temperature export | Chillers, freezers, reefer containers, cold chain 3PL |
| Relative cost | Lower per kilogram | Typically higher per kilogram, often lower per pallet |
How to choose. If your pallets never leave room temperature, standard film is the economical choice. If any stage involves a cold store, a reefer container, or a freezer, specify a film formulated for low temperature — the extra cost per roll is usually smaller than the cost of one rejected load.
Common Applications of Cold Storage Stretch Film
Frozen Food and Seafood Export
Frozen cartons are wrapped before container loading and held cold for weeks. Film must resist corner cuts from frozen edges and keep the stack together through repeated handling.
Chilled Dairy and Fresh Produce Distribution
Short cold chains with frequent handling and condensation. Cling retention matters more than extreme thickness here.
Reefer Containers and Cold Store Cross-Docking
Wrapped pallets face vibration, temperature swings, and repeated movement on racking. Good low-temperature cling means fewer rewraps and less operator time inside the cold room.
What Specifications Should Buyers Check?
- Thickness in micron (or gauge), with the tolerance you will accept.
- Width in millimeters, matched to the machine carriage or hand roll.
- Roll length and roll weight, which determine how often operators change rolls.
- Core inner diameter: commonly 3″ (76 mm) for machine film, 2″ (50 mm) or 3″ (76 mm) for hand film.
- Elongation / pre-stretch capability for machine film and film economy.
- Low-temperature cling, ideally tested at your actual operating temperature.
- Dart impact and tear resistance for frozen or sharp-edged loads.
- Haze / transparency where barcode reading and load identification matter.
- Grade: machine or hand, single-sided or double-sided cling.
- Layer structure: mono-layer, three-layer, or five-layer coextrusion.
Some values are set by the manufacturing process while others are agreed between buyer and supplier, so state clearly which are fixed by your line and which are open to recommendation. Requirements may vary by application, market and applicable standard.
Cost and Efficiency: Compare by Cost per Pallet
Roll price alone is a poor comparison. What matters is cost per wrapped pallet, driven by film weight used, pre-stretch ratio, and failure rate. A practical estimate of usable length helps compare rolls of different weight:
Meters per roll ≈ (roll weight in kg × 1,087) ÷ (width in m × thickness in micron)
A 500 mm wide, 20 micron, 15 kg roll yields roughly 1,600 meters at typical polyethylene density. Comparing on meters rather than kilograms quickly exposes the real difference between two offers.
- Downgauging. Higher-strength metallocene film allows a thinner gauge for the same load, cutting film weight per pallet — provided puncture resistance still suits frozen edges.
- Pre-stretch. Machine film applied with high pre-stretch delivers more pallets per roll, so a higher roll price can still lower cost per pallet.
- Failure cost. One rejected frozen container usually costs many times the film saved by buying a cheaper roll.
How to Inspect Cold Storage Stretch Film Quality
Dimensional and surface inspection
Check thickness with a gauge at several points, measure width, confirm roll weight and length, verify core inner diameter, and inspect end faces for telescoping. Look for gels, fisheyes, wrinkles, and color variation against the approved sample.
Performance verification
Useful reference methods include ASTM D882 or ISO 527-3 for tensile properties, ASTM D1709 for dart impact, ASTM D1922 for tear resistance, and ASTM D1003 for haze. Cling can be assessed with peel-type methods such as ASTM D3330 or ISO 29862.
Application test
Wrap a representative pallet, keep it in your cold store or freezer for 24–48 hours, then inspect cling, edge seal, and stack alignment. This predicts cold chain performance better than any lab value in isolation.
Pre-shipment inspection typically covers dimensions, roll weight, appearance, end faces, a wrapping trial, and export packing and marks. Laboratory items such as tensile strength and dart impact usually rely on the supplier’s batch records.
What Information Should Be Included in an RFQ?
- Product type: machine or hand grade, single-sided or double-sided cling
- Film structure: mono-layer or multi-layer coextrusion
- Dimensions: width, thickness, and roll length or roll weight
- Core size and core material
- Color or transparency requirement
- Performance targets: elongation, low-temperature cling, puncture resistance
- Operating temperature range and cold storage conditions
- Applicable standard or test method, if required
- Packaging: carton or pallet, rolls per carton, pallet height, OEM printing
- Order quantity and trial order intention
- Destination port and shipping terms
- Wrapping method and machine model, if machine film is required
How to Choose a Reliable Supplier
- Resin and tackifier transparency. The supplier should explain which resin family and tackifier system is used and why it suits low temperature.
- Production capability. Confirm blown or cast extrusion lines, coextrusion layers, and in-house slitting and rewinding.
- Quality control. Ask about inline thickness gauging, first-article approval, batch retention samples, and the pre-shipment routine.
- Batch consistency. Cold chain customers cannot tolerate cling or thickness drifting between deliveries.
- Samples. Request a sample for a cold-room trial and confirm lead time and policy.
- Custom specifications. Width, thickness, roll weight, core size, color, and packaging should all be adjustable.
- Warning signs. Prices well below comparable resin content, refusal to provide samples, vague answers on the tackifier system, and inconsistent dimension statements.
Frequently Asked Questions
Will standard stretch film work in a freezer?
Standard film loses cling and flexibility as it cools and usually unwraps or tears. A film formulated for low temperature is safer.
Can cold storage stretch film be used at room temperature too?
Yes. Cold-temperature film performs well in normal warehouses; the reverse is not true, so many buyers standardize on one film.
What thickness should I choose for frozen pallets?
Machine film commonly runs 15–23 micron for frozen loads. Final choice depends on load weight, edge sharpness, and how long the pallet stays cold.
How should I test cling at low temperature?
Wrap a test pallet, store it at your real operating temperature for 24–48 hours, then check whether the wrap still seals to itself and whether the stack has shifted.
Can you customize width, thickness, roll weight, and core size?
Yes. These are normal order parameters in film manufacturing and are supplied to specification for export orders.
How should film be stored before use?
Keep rolls dry and shaded, away from sunlight and heat, since UV exposure degrades the tack layer over time.
Source Cold Storage Stretch Film from Pefilmpack
Weishan Litong Packing Material Co., Ltd. manufactures and exports PE stretch film and polyolefin packaging films for importers, distributors, and logistics operators. For cold chain customers we supply freezer-grade and cold-room stretch film with width, thickness, roll length, roll weight, color, and core size made to order, in hand or machine grade and with single-sided or double-sided cling. Rolls are produced under inline thickness control and inspected before export packing, with OEM branding available on request. Tell us your load type, operating temperature, and wrapping method, and we will recommend a specification and send a sample for your own cold-room trial.
Send your specifications: product type, size (width, thickness, roll weight), film structure, cling requirement, packaging, order quantity, and destination port. We will reply with a quotation and a recommended specification for your cold chain.
Recommended Images and Alt Text
| Image Placement | Image Description | Recommended File Name | Recommended Alt Text |
|---|---|---|---|
| Hero image | Wrapped pallet of frozen cartons inside a cold store | cold-storage-stretch-film-wrapped-pallet-freezer.jpg | Pallet of cartons wrapped in cold storage stretch film inside a freezer room |
| Manufacturing process | Cast extrusion line with chill roll and thickness gauge | stretch-film-cast-extrusion-line-thickness-control.jpg | Cast extrusion line producing stretch film with in-line thickness control |
| Product types | Hand rolls and machine rolls of clear and colored film | freezer-grade-stretch-film-hand-machine-rolls.jpg | Hand rolls and machine rolls of clear and colored freezer-grade stretch film |
| Product comparison | Side-by-side ambient film and cold-temperature film rolls | ambient-vs-cold-temperature-stretch-film-comparison.jpg | Ambient stretch film and cold-temperature stretch film rolls side by side |
| Application | Operator wrapping a pallet in a chilled warehouse | cold-room-pallet-wrapping-operator.jpg | Operator wrapping a pallet with hand stretch film in a chilled warehouse |
| Quality inspection | Thickness gauge and roll weight check on a film roll | stretch-film-thickness-roll-weight-inspection.jpg | Inspector measuring stretch film thickness and roll weight before shipment |
| Packaging | Cartons of film rolls stacked on an export pallet | stretch-film-export-cartons-pallet-packaging.jpg | Cartons of stretch film rolls stacked and wrapped on an export pallet |
| CTA | Film rolls prepared for loading into a container | stretch-film-order-ready-container-loading.jpg | Stretch film rolls prepared for container loading at an export warehouse |