Stretch Film vs Cling Film: Key Differences Explained by a Film Manufacturer

Stretch film and cling film are not the same product — not even close. One is a thick industrial wrapping engineered to hold a 1,000 kg pallet together through ocean freight; the other is a thin, food-safe film designed to preserve a tray of salmon in a refrigerated display counter. Confusing the two leads to either food safety violations or ruined pallets.

This guide, written from the perspective of a PVC cling film manufacturer that exports to supermarket chains, food distributors, and HORECA importers across 40+ countries, explains exactly what separates these two products — technically, commercially, and from a food safety standpoint.

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The Short Answer: Stretch Film vs Cling Film

Feature	Stretch Film (Pallet Wrap)	Cling Film (Food Film)
Primary material	LLDPE (Linear Low-Density Polyethylene)	PVC or PE (food-grade)
Typical thickness	15-30+ microns (hand wrap); 10-20 microns (machine wrap)	8-15 microns
Elongation at break	200-500%	100-200%
Self-cling mechanism	Tackifier additives	Inherent PVC formulation or PE tackifiers
Food contact approved	No (standard grade)	Yes (food-grade certification required)
Oxygen barrier	Very low	Moderate (PVC) to low (PE)
Anti-fog properties	None	Yes (food-grade formulation)
Typical cling force	150-400 g/cm (to itself)	30-80 g/cm (to surfaces)
Core diameter	50-76 mm	38-76 mm
Primary use	Pallet unitising, freight stabilisation	Food preservation, tray wrapping, food service
Regulatory status	Not food contact rated	FDA / EU 10/2011 certified

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What Is Stretch Film?

Stretch film — also called stretch wrap or pallet wrap — is an LLDPE (Linear Low-Density Polyethylene) film manufactured specifically to be stretched under tension and wrapped around pallets, bundles, or freight loads. When released, the film’s elastic memory pulls tight, holding the load together.

Key technical characteristics of industrial stretch film:

• Thickness: Hand stretch film runs 17-25 microns. Machine stretch film runs 15-23 microns. Pre-stretched film can go as thin as 6-10 microns but with pre-applied elongation.
• Elongation: Designed to stretch 150-500% before breaking. This is what gives pallet wrap its load-securing power.
• Tackifiers: Stretch film uses PIB (polyisobutylene) or other tackifier additives to create cling between layers of film on the pallet. These additives are not food-contact approved.
• UV stabilisers: Outdoor stretch film contains UV stabilisers for extended outdoor storage — not appropriate for food contact.
• Puncture resistance: Rated in grams or Newtons; engineered to resist sharp corners of cartons and machinery.

Stretch film is optimised for one job: keeping freight on a pallet stable. It is not designed to touch food.

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What Is Cling Film?

Cling film — also called food wrap, plastic wrap, or kitchen wrap — is a thin, flexible film applied directly to food or over food containers to preserve freshness. The two dominant materials are PVC (polyvinyl chloride) and PE (polyethylene).

PVC Cling Film

PVC cling film is the gold standard for commercial food wrapping, used in 70-80% of supermarket and food service applications worldwide.

Technical specifications:

• Thickness: 8-15 microns (typical commercial range: 9-12 microns)
• Self-cling force: 40-80 g/5cm (ASTM D1002 method) — achieved through the inherent polar nature of PVC without tackifier additives
• Tensile strength: 20-35 MPa (machine direction)
• Elongation at break: 120-180% — enough stretch to wrap containers cleanly but not designed for the extreme elongation of pallet wrap
• Oxygen transmission rate (OTR): 5,000-8,000 cc/m²/24h — adequate for 3-7 day refrigerated shelf life
• Light transmission: 92-95% — crystal clarity for retail display
• Anti-fog additive: Yes — prevents condensation in refrigerated counters at 0-4°C
• Plasticiser type: DEHA or ATBC (food-grade, non-phthalate)
• Regulatory compliance: FDA 21 CFR 177.1580; EU Regulation No 10/2011; GB 4806.7 (China)

PE Cling Film

PE cling film uses polyethylene — the same base polymer as stretch film, but in a completely different formulation engineered for food safety and cling performance.

Technical specifications:

• Thickness: 10-15 microns
• Self-cling force: 25-50 g/5cm (lower than PVC; sometimes enhanced with tackifiers)
• Tensile strength: 15-25 MPa
• Elongation at break: 150-250%
• Oxygen transmission rate: 8,000-15,000 cc/m²/24h (higher than PVC — less barrier)
• Microwave safe: Yes (no plasticisers to migrate at heat)
• Anti-fog: Good (additive-based)
• Regulatory compliance: FDA 21 CFR 177.1520; EU Regulation No 10/2011

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Is Stretch Wrap the Same as Cling Wrap?

No. This is one of the most common misconceptions in food packaging procurement, and the confusion has real consequences.

The word “cling” appears in both “cling film” and occasionally in “cling wrap” used as a colloquial term for stretch film in some markets (particularly Australia and New Zealand, where “cling wrap” often means household food wrap). This linguistic overlap causes genuine purchasing errors.

The three key differences that matter for buyers:

1. Food safety approval

Standard stretch film contains PIB tackifiers and other additives not approved for food contact under FDA, EU, or most national food safety regulations. Using pallet wrap to directly cover food is a food safety violation in most jurisdictions.

Food-grade cling film — both PVC and PE variants — is formulated specifically for direct food contact, with migration limits tested to international standards. Each lot should come with a Certificate of Conformity and migration test reports.

2. Thickness and elongation

Stretch film’s 200-500% elongation is achieved through a specific LLDPE resin selection and cast or blown film extrusion process. This extreme elongation is a liability in food wrapping — the film would over-stretch, lose cling to containers, and fail to maintain a tight seal.

Food cling film’s 120-250% elongation is deliberately limited to allow controlled stretching without losing seal integrity on trays, bowls, and plates.

3. Cling mechanism

Stretch film’s cling comes from PIB tackifiers applied to the film — it clings strongly to itself (interlayer cling) but does not grip glass, ceramic, metal, or polypropylene trays well. This is fine for pallets; it is wrong for food wrapping.

PVC cling film’s self-cling comes from the dipole-dipole attraction of the polar PVC polymer — no tackifiers needed. It grips glass, ceramic, aluminium foil, PE trays, and polypropylene surfaces effectively.

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Pallet Wrap vs Cling Film: Application Guide

When to use stretch film (pallet wrap)

• Unitising cartons on shipping pallets
• Bundling pipes, lumber, or steel profiles
• Securing furniture or appliances during transit
• Pre-stretch machine applications at 200-300% elongation
• Cold chain pallet wrap (special low-temperature LLDPE grades)

Do not use stretch film for: direct food contact, covering food containers, food service applications, any application where food safety certification is required.

When to use PVC cling film

• Supermarket tray wrapping (meat, produce, deli, bakery)
• Restaurant kitchen prep coverage
• Food processing line portion control
• Catering and banquet food cover
• Retail counter food display

Best choice because: Strongest self-cling, best anti-fog, thinnest at equivalent barrier performance, lowest cost per square metre.

When to use PE cling film

• Household use (microwave coverage, home refrigerator storage)
• HORECA where PVC-free is required
• Markets where PVC is regulated or disfavoured
• Frozen food coverage (good performance at -20°C)

Best choice because: Microwave-safe, PVC-free, freezer-stable.

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Stretch Film for Food: What You Need to Know

There is a legitimate product category called “food-grade stretch film” — but it is very different from industrial pallet wrap.

Food-grade stretch film is typically a PE cling film or food-safe LLDPE film sold in retail or food service formats: think cling wrap on a dispenser box for commercial kitchens. The key requirements:

• No PIB tackifier or only food-approved tackifiers
• No UV stabilisers or only food-approved UV additives
• Migration tested to FDA 21 CFR 177.1520 or EU 10/2011 limits
• Certificate of Conformity issued per production lot
• Clearly labelled “Food Safe” or “Food Contact” on the packaging

When sourcing any film described as “food stretch film,” always request the compliance documentation. A supplier unable to provide migration test reports and a CoC should not be supplying food packaging material.

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Food Packaging Film Types: A Manufacturer’s Overview

Beyond stretch film and cling film, food packaging uses several other film types. Understanding where cling film fits in the broader landscape helps procurement teams make better sourcing decisions.

Film Type	Material	Thickness	Key Property	Typical Use
PVC cling film	Polyvinyl chloride	8-15 µm	Best self-cling, anti-fog	Supermarket tray wrap, food service
PE cling film	Polyethylene	10-15 µm	Microwave-safe, PVC-free	Household, HORECA
PVDC film	Polyvinylidene chloride	10-30 µm	Highest O2 barrier	Cheese, cured meat
OPP film	Oriented polypropylene	15-40 µm	High clarity, stiff	Snack bags, bakery window bags
CPP film	Cast polypropylene	20-50 µm	Heat-sealable	Laminate structures, pouches
PLA film	Polylactic acid	20-40 µm	Compostable	Organic produce, premium retail
Stretch/pallet wrap	LLDPE	15-30 µm	High elongation	Freight pallets (NOT food contact)

Cling film — both PVC and PE — occupies the thinnest, most food-contact-critical segment. It requires the strictest regulatory compliance and the most precise manufacturing tolerances of any film type in this table.

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How We Manufacture Food-Grade Cling Film at SUNWRAP

As a PVC cling film manufacturer supplying retail chains, food distributors, and HORECA importers, we produce both PVC and PE cling film to the following specifications:

PVC cling film production parameters:

• Resin: S-PVC suspension grade, K-value 65-70
• Plasticiser: DEHA (di(2-ethylhexyl) adipate) or ATBC (acetyltributyl citrate), food grade
• Processing temperature: 160-180°C (calendering line)
• Thickness tolerance: ±0.5 micron across web width
• Anti-fog additive: glycerol ester series, 0.5-1.5% loading
• Web width: up to 2,000 mm (slit to customer specification)
• Output: 800 rolls/day per production line
• Certifications: FDA, EU 10/2011, SGS-certified migration reports per lot

Quality control checkpoints:

1. Raw material incoming inspection (plasticiser purity, PVC K-value)
2. Melt index and thickness measurement every 30 minutes during production
3. Self-cling force test (peel test, 5 cm strip, 180° angle)
4. Anti-fog visual test at 4°C refrigerated chamber
5. Migration testing: quarterly third-party lab (SGS / Intertek)
6. Finished roll inspection: rewinding defects, core alignment, label accuracy

This level of process control is what separates a food-grade cling film supplier from an industrial film converter that cannot meet food safety requirements.

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Choosing Between Stretch Film and Cling Film: Decision Checklist

Use this checklist before placing an order:

Step 1: Is food contact required?

• Yes → You need food-grade cling film (PVC or PE). Never use standard stretch/pallet film.
• No → Stretch film may be appropriate for freight/logistics applications.

Step 2: What surface are you wrapping?

• Trays, bowls, plates, glass → PVC cling film (strongest grip on non-film surfaces)
• Pallets, cartons, bundles → Stretch film
• Microwave containers → PE cling film only

Step 3: What environment?

• Refrigerated retail display → PVC cling film (best anti-fog at 0-4°C)
• Home kitchen / microwave → PE cling film
• Outdoor or transit → Stretch wrap (UV-stabilised grade for outdoor)

Step 4: What throughput?

• High-volume food processing / supermarket → PVC cling film on jumbo rolls for automatic tray wrappers
• Food service kitchen → Pre-cut PE cling film rolls in dispenser boxes
• Pallet operations → Machine stretch film (pre-stretch or standard)

Step 5: Request compliance documentation

• For food film: CoC, migration test report, ingredient list (plasticiser type for PVC)
• For industrial stretch film: tensile, elongation, cling force spec sheet

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Frequently Asked Questions

Is stretch film the same as cling film?

No. Stretch film (pallet wrap) and cling film are two distinct products. Stretch film is a thick PE film (15-25 microns or more) engineered for high elongation and load stability on pallets. Cling film is a thin food-grade film (8-15 microns) — usually PVC or PE — designed for direct food contact with self-cling and anti-fog properties. They share no interchangeable use cases.

Can you use stretch film for food?

Standard stretch film is not food-safe. Industrial pallet wrap contains slip additives, UV stabilisers, and tackifiers not approved for direct food contact. Food-grade stretch film does exist — look for FDA 21 CFR or EU 10/2011 compliance marks and migration test reports from the supplier. Even then, food stretch film is usually PE cling wrap in roll format, not the same as pallet stretch wrap.

What is the difference between pallet wrap and cling film?

Pallet wrap (stretch wrap) is 15-30+ micron LLDPE film wound at high tension to secure freight on pallets. Cling film is 8-15 micron PVC or PE food film for covering food containers. They differ in thickness, material formulation, regulatory approval, cling mechanism, and elongation. Pallet wrap is not food contact approved. Cling film cannot secure pallets.

What types of food packaging film are there?

The main food packaging film types are: PVC cling film (strongest self-cling, best for supermarket display), PE cling film (microwave-safe, PVC-free, good for household and HORECA), PVDC film (highest oxygen barrier, used for meat and cheese), CPP/OPP films (used in laminates and snack packaging), and PLA/PBS biodegradable films (compostable, niche segment). Stretch film is a separate category used for transport, not food wrapping.

Which is better for food wrapping — PVC or PE cling film?

PVC cling film is better for high-volume supermarket and food service use: stronger self-cling, superior anti-fog, thinner at equivalent performance (8-11 microns vs 10-15 microns for PE), and lower cost per square metre. PE cling film is better for home use, microwave applications, and markets that prefer PVC-free products. Most food packaging importers stock both to cover different buyer segments.

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Ready to Source the Right Film?

If you are a food packaging importer, supermarket chain, or HORECA distributor looking for food-grade cling film — PVC or PE — with full FDA/EU compliance documentation and consistent factory-direct pricing, we can help.

SUNWRAP manufactures PVC and PE cling film across 20+ SKUs, with MOQ from 1 x 20ft container, private label/OEM available, and migration test reports provided per lot.

For industrial stretch wrap sourcing, we can refer you to specialist pallet film suppliers — it is not our product category, and we believe buyers deserve honest guidance rather than a mismatch sale.

Contact our export team to discuss your specification, volume, and target market. We respond within 24 hours on business days.

You may also find these guides useful before making a sourcing decision:

• PVC cling film vs PE cling film — full technical comparison
• PE cling film product page and specifications
• Cling wrap vs saran wrap vs plastic wrap — terminology explained