Stretch Film vs Cling Film: 7 Key Differences Explained

Stretch film and cling film are both transparent plastic films used in packaging — and that is roughly where the similarity ends. One is built to lock a 1,200 kg pallet together during ocean freight. The other is built to seal a tray of salmon at the supermarket deli counter. Confusing them is like confusing duct tape with masking tape: same broad category, completely different job.

If you are a packaging buyer sourcing film for a food business, a logistics operation, or both, understanding exactly where these two films diverge saves you money, avoids compliance problems, and prevents the embarrassing moment when a warehouse crew tries to wrap pallets with kitchen cling wrap.

This guide covers the seven core differences, with real pricing data and specifications from the production floor. Last Updated: 2026-10-17

The 7-Point Comparison at a Glance

Feature	Stretch Film	Cling Film
Primary material	LLDPE (Linear Low-Density Polyethylene)	PVC or LDPE/LLDPE (food-grade formulations)
Thickness range	17-30 microns (60-120 gauge)	8-15 microns (30-60 gauge)
Cling mechanism	PIB tackifier additive (chemical self-cling)	Electrostatic + van der Waals forces (inherent cling)
Temperature tolerance	-30°C to +60°C (storage/transit range)	-20°C to +100°C (freezer to microwave for PVC/PE)
Food-contact approval	Not food-safe (PIB not FDA-approved for food contact)	FDA 21 CFR 177.1520 / EU 10/2011 compliant
Cost (FOB China)	$1.80-3.00/kg (machine grade, container volume)	$1,400-2,200/ton ($1.40-2.20/kg) for PVC food-grade
Primary application	Pallet unitizing, load containment, transit protection	Food wrapping, tray overwrapping, fresh produce sealing

Each of these seven differences traces back to a fundamental design choice during manufacturing. Let us walk through them.

1. Material: LLDPE vs PVC (and PE Cling Film)

Stretch film is made from LLDPE — linear low-density polyethylene. This resin is chosen for one property above all others: elongation. LLDPE can stretch 200-300% before failure, creating the sustained inward tension that holds a pallet load together during days of transport and handling.

Cling film for food contact is made from either PVC (polyvinyl chloride) or PE (polyethylene), depending on the market and application.

PVC cling film dominates commercial food service — delis, supermarkets, catering, meat processing. PVC offers superior cling to smooth surfaces like stainless steel trays and glass bowls, excellent clarity, and clean cut-off on dispenser blades. It accounts for roughly 60% of the global food-wrapping film market by volume.

PE cling film is the retail consumer standard (Glad, Saran, store brands). It uses LLDPE resin but in a food-safe formulation without PIB tackifiers. PE cling film relies on its inherent low-level tackiness and thinner gauge to conform to containers.

The resin choice dictates everything downstream: cling behavior, temperature range, food safety certification, and cost. For a deeper look at PVC versus PE for food applications, see our cling wrap vs saran wrap comparison.

2. Thickness: Heavy-Duty vs Ultra-Thin

Stretch film operates in the 17-30 micron range (roughly 60-120 gauge in imperial measure). Machine-grade stretch film clusters around 20 microns (80 gauge), which is the industry sweet spot for cost vs. holding force. Pre-stretched film can run as thin as 7-9 microns because the pre-stretching is done at the factory under controlled conditions, not by the wrapper.

Cling film for food use is significantly thinner — 8-15 microns. The standard commercial PVC cling film is 10-12 microns. Consumer PE cling wrap (the rolls you buy at the grocery store) runs 8-11 microns.

Why so thin? Cling film does not need tensile strength. It needs conformability — the ability to drape smoothly over irregular surfaces, stretch gently over a bowl rim, and cling without bunching. A thicker film would be stiffer, harder to tear, and would not cling as well to curved surfaces.

For a complete breakdown of cling film thickness options and their applications, our PVC cling film thickness chart covers the full range from 8 to 30 microns.

3. Cling Mechanism: Chemical Tackifier vs Electrostatic Cling

This is the most technically interesting difference and the one most buyers do not understand.

Stretch film cling is chemical. During extrusion, a PIB (polyisobutylene) additive is blended into the LLDPE resin or applied as a surface coating. PIB is a viscous polymer that migrates to the film surface over 24-48 hours after production (called “bloom time”). It creates a sticky, pressure-sensitive surface that bonds film layer to film layer when wrapped around a pallet. Most commercial stretch film is “one-sided cling” — PIB on the inner face only — so adjacent pallets in a warehouse do not stick together.

Cling film cling is physical. PVC cling film achieves its characteristic cling through electrostatic attraction and van der Waals forces between the film surface and the material it contacts (glass, ceramic, stainless steel, other film). PVC is naturally polar, which gives it inherent surface energy that makes it “grab” smooth surfaces. A plasticizer (typically DEHA or ATBC for food-grade film) keeps the PVC soft and enhances conformability.

The practical difference: stretch film sticks to itself but not well to other surfaces. Cling film sticks to smooth surfaces but not as strongly to itself. They are engineered for opposite contact scenarios.

4. Temperature Range: Warehouse vs Kitchen

Stretch film is designed for ambient warehouse and transit conditions. Standard LLDPE stretch film performs reliably from -30°C to +60°C. Below -30°C, it becomes brittle and loses elongation. Above 60°C (for example, sitting in a container on a summer dock in Dubai), it can soften and lose holding force. There is no reason to heat stretch film — it is applied cold by machine or hand.

Cling film operates across the full food-handling temperature spectrum:

• Freezer: PVC cling film maintains flexibility down to -20°C. PE cling film is slightly better at -30°C.
• Refrigerator: The primary use case. Both PVC and PE perform well at 0-5°C.
• Microwave: PVC cling film is rated for microwave use up to 100°C (with venting). PE cling film can handle slightly higher temperatures. Neither should touch food directly in a microwave — maintain a gap of at least 25mm between film and food surface.
• Oven/boiling: Neither cling film nor stretch film is oven-safe. PVC softens above 110°C and PE above 120°C.

The temperature versatility of cling film directly reflects its kitchen mission: food goes from prep counter to fridge to microwave without rewrapping.

5. Food Safety: The Line You Cannot Cross

This is the difference that matters most from a regulatory perspective.

Stretch film is not food-safe. The PIB tackifier, along with other processing aids used in LLDPE stretch film production, has not been evaluated or approved for direct food contact under FDA 21 CFR or EU Regulation 10/2011. Using stretch film to wrap food directly violates food safety regulations in every major market.

Cling film is specifically manufactured, tested, and certified for food contact. At SUNWRAP, every production batch of PVC cling film undergoes migration testing per EU 10/2011 and FDA 21 CFR 177.1520 — measuring the transfer of plasticizers, heavy metals, and other substances from the film into food simulants under specified time-temperature conditions.

The certifications that packaging buyers should verify on any food-grade cling film:

• FDA 21 CFR 177.1520 (polyethylene) or 177.1950 (vinyl chloride polymers)
• EU Regulation 10/2011 on plastic materials intended to contact food
• BRC Global Standard for Packaging (for food-service supply chains)
• GB 4806.7 (China national standard for food-contact plastics)

If a supplier offers “food-grade stretch film,” ask for the specific FDA or EU test report. Legitimate food-wrapping film will have these on file. Standard pallet stretch film will not.

6. Cost Structure: Per-Pallet vs Per-Tray

Stretch film and cling film occupy different price brackets, and comparing them per kilogram is misleading because they cover dramatically different areas per kg.

Stretch film pricing (FOB China, container volume):

Grade	Specification	Price Range
Hand roll, cast	80 gauge, 18” x 1,500 ft	$6-10/roll
Machine roll, cast	80 gauge, 20” x 5,000 ft	$12-20/roll
Pre-stretched	7-9µm, 20” x 9,000 ft	$18-28/roll
Blown stretch	80 gauge, 20” x 5,000 ft	$15-25/roll

At machine application rates, one roll wraps 40-80 pallets. Cost per pallet: $0.15-0.50.

PVC cling film pricing (FOB China, container volume):

Format	Specification	Price Range
Jumbo roll (converter)	10µm, 1,500mm wide, 6,000m	$1,400-1,800/ton
Food service roll	12µm, 300mm x 300m	$0.80-1.50/roll
Food service roll	12µm, 450mm x 300m	$1.20-2.00/roll
Consumer retail roll	10µm, 300mm x 30m	$0.15-0.35/roll

For a supermarket wrapping trays, PVC cling film costs approximately $0.01-0.03 per tray. For a logistics company wrapping pallets, stretch film costs $0.15-0.50 per pallet. The cost-per-unit numbers are not directly comparable because the “units” are completely different.

7. Application: Pallet Loads vs Food Trays

The final difference is the most obvious one — what each film actually does in practice.

Stretch film applications:

• Pallet unitizing (90%+ of all stretch film consumption)
• Bundling loose items (pipes, lumber, irregular shapes)
• Surface protection during transit (furniture, appliances)
• Color-coded inventory management (tinted stretch film)
• Tamper indication on pallet loads (printed or colored film)

Cling film applications:

• Supermarket tray overwrapping (meat, produce, deli)
• Commercial kitchen food storage (bowls, trays, prep containers)
• Catering and banquet prep (covering plated meals)
• Food processing line wrapping (cheese, confectionery)
• Consumer household food storage

There is almost zero overlap between these application lists. A food business and a logistics business could both buy from SUNWRAP, but they would be buying fundamentally different products.

When Packaging Buyers Need Both

Many businesses purchase both films. A meat processor, for example, wraps individual trays with PVC cling film on a tray-sealing machine, packs the trays into cartons, stacks cartons on a pallet, and wraps the pallet with LLDPE stretch film. Two different films, two different machines, two different suppliers in many cases.

If your operation uses both, the sourcing strategy differs:

• Cling film — prioritize food-safety certifications, plasticizer type (DEHA vs ATBC vs adipate), cling consistency, and clarity. Price is secondary to compliance.
• Stretch film — prioritize holding force per dollar, pre-stretch ratio, and consistency across tens of thousands of pallets. Certification requirements are minimal (REACH for EU markets).

Cling film was not always the transparent, stretchy kitchen staple we know today. It evolved from a military waterproofing material in the 1940s through decades of polymer chemistry innovation. Our history of cling film timeline traces that journey from Saran’s accidental discovery to modern PVC and PE formulations.

Sourcing From a Manufacturer: What SUNWRAP Produces

SUNWRAP is a PVC cling film manufacturer based in Ningbo, China. Our product line focuses on PVC cling film for food service and food processing — the food-contact side of this comparison. We produce:

• PVC cling film in 8-15 micron gauges, FDA and EU 10/2011 certified
• Jumbo rolls for converters (up to 1,500mm width)
• Food service rolls (300mm, 450mm widths, custom lengths)
• Consumer retail rolls with private label packaging

For buyers who also need stretch film, we can refer you to LLDPE stretch film manufacturers in our supply network.

Browse our full PVC cling film product range or request a quote with your specifications — thickness, width, length, volume, and destination market. Samples ship within 3 business days.

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Related reading:

• Cling Wrap vs Saran Wrap vs Plastic Wrap — What Is the Difference?
• PVC Cling Film Thickness Chart: 8µm to 30µm Guide
• History of Cling Film: From WWII Invention to Modern Kitchen
• Shrink Wrap vs Stretch Film: Complete Comparison