What Is Saran Wrap? The Complete Guide to Materials, Thickness & Safety

What is saran wrap? At its simplest, saran wrap is a thin, transparent plastic film used to cover food containers, wrap fresh produce, and seal leftovers. But “saran wrap” is actually a brand name that Americans use as a generic term for all plastic food wrap — the same way “Kleenex” means tissue or “Band-Aid” means adhesive bandage.

The real question most people want answered is not “what is saran wrap” but rather: what is saran wrap actually made of, is cling wrap the same thing, and why doesn’t it stick like it used to? This guide answers all of those questions from the perspective of a PVC cling film manufacturer that has been producing the product for over 20 years.

What Is Saran Wrap Made Of?

This is where it gets interesting, because the answer has changed over time.

The original formula: PVDC (1953-2004)

When Dow Chemical launched Saran Wrap in 1953, it was made from PVDC — polyvinylidene chloride. PVDC was originally developed during World War II to protect military equipment from moisture. The material had two exceptional properties that made it perfect for food wrap:

1. Natural self-cling — PVDC molecules attract smooth surfaces (glass, ceramic, metal) through molecular polarity, creating a strong seal without any adhesive
2. Oxygen barrier — PVDC blocks oxygen transmission 10x better than polyethylene, keeping food fresh significantly longer

For 50 years, this PVDC formula made Saran Wrap the gold standard of plastic food wrap in America.

The modern formula: LDPE (2004-present)

In 2004, S.C. Johnson (which had acquired the Saran brand from Dow) switched the formula from PVDC to LDPE — low-density polyethylene. The reasons:

• Environmental concerns — PVDC contains chlorine, making it difficult to recycle and environmentally controversial
• Cost reduction — LDPE resin costs approximately 40% less than PVDC per kilogram
• Regulatory pressure — growing scrutiny of chlorinated plastics in consumer products

The trade-off was real: LDPE clings significantly less than PVDC. It relies on mild static charge and surface tension rather than molecular attraction. This is why millions of Americans feel that “saran wrap doesn’t stick like it used to” — because it literally is a completely different plastic now.

What commercial cling wrap is made of: PVC

Here is what most consumers do not know: the cling wrap used in supermarket deli counters, meat departments, and commercial kitchens worldwide is made from a third material entirely — PVC (polyvinyl chloride) with food-grade plasticizers.

PVC cling film contains plasticizers (typically DEHA or ATBC — not phthalates) that give it excellent self-cling, crystal clarity, and anti-fog properties. This is the material that still performs the way the original Saran Wrap used to — strong cling on glass, ceramic, stainless steel, and the film itself.

Material	Used In	Cling Strength	Microwave Safe	Cost (FOB China)
PVDC	Original Saran Wrap (1953-2004)	Superior	No	$2.50-4.00/roll
LDPE	Modern Saran Wrap, most consumer brands	Moderate	Yes	$1.00-1.40/roll
PVC	Commercial deli wrap, supermarket, HORECA	Excellent	No	$0.80-1.10/roll

Key insight: If you need saran wrap that actually sticks well, commercial-grade PVC cling film from a Chinese manufacturer delivers cling performance comparable to the original PVDC formula — at less than half the cost. SUNWRAP has been producing this formulation since 2004.

Is Cling Wrap the Same as Saran Wrap?

Yes — cling wrap, saran wrap, plastic wrap, and cling film are all names for the same product category. The differences are purely regional:

Term	Countries	Origin
Saran Wrap	United States, Canada	Brand name (Dow Chemical, 1953)
Plastic wrap	United States (generic)	Descriptive term
Cling film	UK, Ireland, Europe, most of Asia	British English standard
Cling wrap	Australia, New Zealand	Australian English
Glad Wrap	Australia, New Zealand	Brand name (Clorox)
Food wrap	Commercial / food-service industry	Industry term
Papel film	Spain, Latin America	Spanish

So when someone asks “is cling wrap saran wrap?” — the answer is yes, they are the same product. The confusion arises because:

1. Different countries use different names for the identical product
2. Different brands use different materials (PVC vs PE vs PVDC) — so two products both called “saran wrap” may behave very differently
3. The Saran Wrap brand itself changed its material in 2004, so even the same brand is not the same product it once was

For a deeper dive into the naming differences across all seven regions, see our Saran Wrap vs Cling Wrap vs Plastic Wrap comparison guide.

What Is Cling Wrap Made Of? The Three Materials Explained

Whether you call it cling wrap, saran wrap, or plastic wrap, every product on the market is made from one of three plastics. Here is what each one actually is:

PVC (Polyvinyl Chloride) — The Commercial Standard

PVC cling wrap is made from polyvinyl chloride resin compounded with food-grade plasticizers. The plasticizers (typically DEHA — di(2-ethylhexyl) adipate — or ATBC — acetyl tributyl citrate) make the rigid PVC resin soft and flexible, and they are what give the film its characteristic self-cling.

Properties of PVC cling wrap:

• Thickness: 8-15 microns (0.008-0.015 mm)
• Clarity: 92-95% light transmission (crystal clear)
• Oxygen transmission rate: 8,000-12,000 cc/m2/24h
• Cling force: 15-35 N/m depending on thickness
• Temperature range: -20 C to +60 C
• NOT microwave safe (plasticizer migration at high temperatures)

PVC dominates the commercial food-service market because nothing else matches its combination of clarity, cling strength, and low cost. It is the standard material in supermarket meat departments, deli counters, and catering kitchens worldwide.

Food safety: PVC cling film is FDA-compliant (21 CFR 177.1580) and safe for cold food contact when manufactured with approved non-phthalate plasticizers. The key restriction is no microwave use and limited contact with hot, fatty, or oily foods. Reputable manufacturers like SUNWRAP provide SGS migration test reports with every export shipment.

PE / LDPE (Polyethylene) — The Consumer Standard

PE cling wrap is made from low-density polyethylene — the same plastic used in grocery bags and squeeze bottles. It contains no plasticizers at all; the polyethylene itself is naturally soft and flexible.

Properties of PE cling wrap:

• Thickness: 10-15 microns (0.010-0.015 mm) — slightly thicker than PVC
• Clarity: 88-92% light transmission (slight milky haze compared to PVC)
• Microwave safe up to 110 C (230 F)
• BPA-free, no plasticizers
• Weaker cling than PVC — relies on static charge
• Recyclable at grocery store film drop-off bins (plastic code #4)

This is what modern Saran Wrap brand and most consumer plastic wrap brands are made from. It is the safer option for home kitchen use, especially when microwave reheating is involved.

PVDC (Polyvinylidene Chloride) — The Original Premium

PVDC was the original Saran Wrap material. It has the strongest natural cling of all three plastics, plus an oxygen barrier approximately 10 times better than PE. But PVDC is expensive (3-4x the cost of PVC), contains chlorine, and is difficult to recycle. It has been largely phased out of consumer products since the early 2000s.

Today, PVDC is still used in some specialty food packaging (multi-layer barrier films for cheese, processed meats, and medical packaging) but rarely in consumer cling wrap.

How Thick Is Saran Wrap?

Saran wrap thickness varies by material type and application. Here is the complete thickness breakdown:

Product Type	Thickness	Equivalent	Typical Application
Consumer PE wrap (Saran Wrap brand)	11-12 microns	0.43-0.47 mil	Home kitchen
Consumer PVC wrap	8-10 microns	0.31-0.39 mil	Retail boxes, home use
Food-service PVC	12-14 microns	0.47-0.55 mil	Restaurant, deli counter
Meat wrapping PVC	15-17 microns	0.59-0.67 mil	Butcher, supermarket meat dept
Machine wrapping	18-20 microns	0.71-0.79 mil	Automatic tray wrappers
Industrial cling film	22-30 microns	0.87-1.18 mil	Cold storage, pallet overwrap

Conversion formula: 1 micron = 0.001 mm = 0.0394 mil. A standard sheet of copy paper is about 100 microns — so saran wrap is roughly 8-12 times thinner than paper.

For buyers sourcing commercially, thickness selection is critical. An 8-micron film costs less per roll but tears more easily during high-speed wrapping. A 15-micron film handles bone-in meat cuts without puncturing but uses nearly twice the material per meter. The complete thickness chart guide covers all specifications with performance data at every gauge.

How Is Saran Wrap Made? The Manufacturing Process

Understanding how saran wrap is made helps buyers evaluate quality differences between suppliers. The process differs slightly between PVC and PE:

PVC cling wrap manufacturing (cast extrusion)

1. Compounding — PVC resin pellets are blended with food-grade plasticizers (DEHA or ATBC), heat stabilizers, and anti-fog additives in precise ratios. The formulation determines cling strength, clarity, and food-safety compliance.

2. Extrusion — The compound is fed into a cast extrusion line where it is melted at 170-190 C and extruded through a flat die onto a highly polished chrome cooling roller (chill roll). The chill roll temperature (15-25 C) controls the film’s clarity and surface finish.

3. Stretching — The film passes through a series of rollers that orient the polymer chains, increasing tensile strength and reducing thickness to the target gauge (8-15 microns).

4. Corona treatment — The film surface is treated with a corona discharge to improve ink adhesion for printed products.

5. Slitting and winding — The wide master roll (1,200-1,800 mm) is slit to finished widths (250-500 mm) and wound onto cores. Consumer rolls are cut to 100-500 meters; jumbo rolls for rewinders run up to 5,000 meters.

6. Quality control — Each production lot is tested for thickness uniformity (±0.5 microns), cling strength, tensile strength, clarity, odor, and food-contact migration. Retained samples are kept for 12+ months.

PE cling wrap manufacturing (blown film extrusion)

PE cling wrap uses a blown film process: LDPE pellets are melted and extruded through an annular die, inflated into a bubble by air pressure, and then collapsed and wound. The bubble ratio controls thickness and mechanical properties. PE lines typically run faster than PVC casting lines but produce film with slightly lower clarity.

Production capacity benchmark: A mid-sized Chinese cling wrap factory operates 3-6 extrusion lines producing 300-800 tonnes per month. SUNWRAP’s Ningbo facility uses multiple casting lines with dedicated cleanroom environments for food-grade production.

Is Saran Wrap Safe?

The safety of saran wrap depends entirely on the material and how you use it:

PE-based saran wrap (consumer brands): Safe for most uses

• Microwave safe up to 110 C — keep wrap at least 2.5 cm (1 inch) from food
• BPA-free and phthalate-free
• No plasticizer migration risk
• FDA-approved for direct food contact including hot foods
• Safe for freezer use down to -40 C

PVC-based cling wrap (commercial): Safe for cold food contact

• Safe for cold food wrapping (deli, refrigeration, fresh display)
• Not microwave safe — plasticizers can migrate into food at high temperatures, especially into fatty or oily foods
• FDA 21 CFR 177.1580 compliant when manufactured with approved plasticizers
• Safe for freezer use down to -20 C
• Must be manufactured with non-phthalate plasticizers (DEHA or ATBC) — always request the SGS migration test report from your supplier

Key safety rules

1. Check the material type before microwaving — PE is safe, PVC is not
2. Keep cling wrap from touching food in the microwave — leave at least 1 inch of clearance
3. Do not wrap hot, fatty foods in PVC — plasticizer migration increases with heat and fat content
4. Request test reports from your supplier — a legitimate manufacturer will provide FDA compliance documentation and SGS migration test results for every batch

For a detailed PVC vs PE food safety comparison, see our PVC vs PE Cling Film Technical Comparison.

Saran Wrap vs Other Food Storage Options

How does saran wrap compare to alternatives? Here is the honest assessment from a manufacturer’s perspective:

Option	Best For	Limitations	Cost per Use
Saran wrap / cling film	Quick coverage, visual display, commercial speed	Single use, not eco-friendly	$0.01-0.03
Aluminum foil	Grilling, baking, light blocking	Not transparent, tears on edges	$0.02-0.05
Beeswax wraps	Eco-conscious home use, sandwiches	Not for raw meat, hand wash only	$0.05-0.10 (amortized)
Silicone lids	Round bowls and cups	Limited size range, bulky storage	$0.02-0.04 (amortized)
Glass containers	Meal prep, long-term storage	Heavy, expensive upfront, takes space	$0.01-0.02 (amortized)

For commercial food service (supermarkets, restaurants, catering), saran wrap / cling film remains irreplaceable. No alternative matches its combination of:

• Speed of application (a trained wrapper does 500+ trays per shift)
• Transparency (customers see the food)
• Cost per wrap ($0.01-0.03)
• Self-cling seal (no heat, no adhesive, no clips needed)

This is why global PVC cling film consumption continues to grow at 3-4% annually despite the rise of reusable alternatives in the consumer market.

How to Source Saran Wrap Wholesale from China

If you are a distributor, retailer, or food-service operator looking to buy saran wrap in bulk, sourcing factory-direct from China offers 50-70% cost savings over branded alternatives:

Specification	FOB Ningbo Price	Container Quantity (20GP)
PVC, 30cm x 300m	$0.80-1.10/roll	~10,000 rolls
PVC, 45cm x 300m	$1.00-1.30/roll	~8,000 rolls
PE, 30cm x 300m	$1.00-1.40/roll	~10,000 rolls
PVC jumbo, 45cm x 1,500m	$3.50-4.50/roll	~2,500 rolls

Minimum order: One 20-foot container (18-22 tonnes). Trial orders of 3-5 tonnes available for first-time buyers.

Custom options: Private-label printing (your brand on the box and film), custom widths, custom lengths, multi-language packaging (English, Arabic, Bahasa, Vietnamese, Tagalog, French, Spanish).

Lead time: 15-25 days production + ocean transit (3-5 days to Southeast Asia, 15-25 days to Middle East, 25-35 days to Europe/Americas).

For the full sourcing guide, see Saran Wrap Manufacturer China — Wholesale Guide and How to Find a Reliable Cling Film Supplier.

The Bottom Line: What Is Saran Wrap?

Saran wrap is a thin, transparent plastic food wrap — originally made from PVDC, now mostly made from PE (consumer brands) or PVC (commercial/food-service). The brand name “Saran Wrap” became a generic American term for all plastic food wrap, the same way cling wrap, cling film, and plastic wrap are used interchangeably in other countries.

The material matters more than the name. PVC delivers the best cling for commercial use. PE is safest for home microwave use. And if you are buying at retail prices, you are paying 3-5x what factory-direct costs.

Contact SUNWRAP for factory-direct PVC or PE cling film pricing — the product Americans call saran wrap, the British call cling film, and the Australians call cling wrap. Same product, same factory, same quality — just different names.

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SUNWRAP is a Korean-invested cling film manufacturer in Ningbo, China — FDA-compliant, SGS-tested, 20+ years of production. We supply the product known as saran wrap, cling film, plastic wrap, and food wrap to importers in 50+ countries. Request a quote →