Hey everyone, it’s Jake here, and I’m the guy behind the PVC plain film supply that you might’ve seen floating around industrial packaging, construction, and even food storage spaces. Lately, I’ve gotten way more DMs, emails, and even random questions at trade shows than usual from folks asking one specific question: “Can Polyvinylidene Chloride (PVDC) plain film be stretched?” Polyvinylidene Chloride Plain Film
I get why this is such a big one. If you’ve ever worked with flexible films for packaging, wrapping, or any sort of covering, stretching is basically the name of the game—you need it to fit awkwardly shaped loads, conform to tight edges, or just cut down on how much film you waste. A lot of people assume all plastic films stretch easily, so when they hear PVDC is this super barrier-heavy stuff, they’re not sure if it’s like stretch wrap that can pull 2x its original length or more. Spoiler: it’s not a simple yes/no answer, and as someone who’s been supplying PVDC plain film for 8 years now, I’ve learned there’s way more nuance here than most people think.
First, let’s get one thing straight: PVDC isn’t the same as regular polyethylene (PE) stretch film, that stuff you use to wrap pallets that can be pulled super tight without snapping. PE is a polyolefin, long chains of carbon and hydrogen that flow really easily when heated or pulled, which is why it stretches so well. PVDC is different—it’s polyvinylidene chloride, so it’s got those chlorine atoms attached to its polymer chains, right? That chlorine changes everything. Chlorine makes the polymer chains way stiffer, more tightly packed, and less flexible overall. That’s actually why PVDC is so good at blocking moisture, oxygen, and flavors—those tight, stiff chains don’t let small molecules slip through, which is why you see it used for things like meat wrap or pharmaceutical blister packs.
Now, back to stretching. If you grab a piece of raw, unmodified PVDC plain film—like the standard stuff I supply for general industrial uses—at room temperature, you can stretch it a little, but not much. We’re talking maybe 10% to 20% of its original length before it starts to feel tight, and at around 30%, it’ll snap. That’s it. No fancy stretch, no conforming to weird shapes, just a tiny little stretch before it breaks. That’s a huge difference from PE stretch film, which can stretch 300% or more. So if you were hoping to use my standard PVDC plain film as a pallet wrap, that’s not going to work. I’ve had a guy test that once, he pulled it as hard as he could and it split right through before he could wrap half his load. Oops.
But wait—before you go writing PVDC off as non-stretchable, there’s a whole other side here. Most of the PVDC film you see in everyday life is actually modified, right? And if you process it right, you can get way more stretch. Let’s talk about biaxially oriented PVDC film, which is the stuff used for vacuum packaging. When manufacturers take PVDC resin and heat it up just enough to make it malleable, then pull it in two directions (length and width) at the same time, they align those polymer chains. That changes everything. A properly oriented PVDC film can stretch up to 100%—double its original length—without breaking. And it doesn’t lose that barrier property, either. That’s the stuff that keeps lunch meat fresh in the fridge for weeks, by the way. The orientation makes it stronger too, so it can handle being pulled tight around a piece of meat or a bag of chips without tearing.
But here’s the thing I wish more people knew: the stretchability of PVDC plain film isn’t one-size-fits-all. It depends on three big factors: how it’s made, its thickness, and what it’s being used for. Let’s break that down, since that’s the stuff I have to explain to every new customer that contacts me.
First, manufacturing process. If it’s cast PVDC plain film (that’s the standard stuff I carry for things like liners or surface covers), it’s the least stretchy. Cast film is made by melting resin and pouring it onto a cold roller to cool it quickly, so the polymer chains are all jumbled up, not aligned. That’s why it only stretches 10-20% at room temp. Blown film, on the other hand, is made by blowing a bubble of molten resin, which aligns the chains a bit more as the bubble expands. Blown PVDC plain film can stretch up to 50% before breaking, which is better than cast, but still not as stretchy as oriented film.
Second, thickness. Thinner films stretch more than thick ones every single time. I’ve tested this in my warehouse a hundred times. A 0.5 mil PVDC plain film (that’s super thin, used for things like moisture barriers) will stretch up to 40% before breaking, while a 5 mil thick film (used for heavy industrial liners) only stretches about 15% before snapping. That makes sense—thicker material has more polymer chains holding it together, so they can’t slide past each other as easily.
Third, temperature. PVDC becomes a lot more flexible when it’s warm. If you heat a piece of standard PVDC plain film up to around 120-140°F, it can stretch up to 70% before breaking. I’ve had customers use this for heat-shrinking wraps for irregular parts—they warm the film with a heat gun, pull it tight around the part, and it conforms perfectly as it cools. But you can’t do that at room temp, obviously, because it’ll just snap if you try to pull it hard when it’s cold.
Now, let’s talk about what this means for you, because I know you’re not just here for a polymer science lecture (though I get geeked out on this stuff). If you’re looking for PVDC plain film for a specific project, here’s what you need to know about stretching:
- If you need a film that stretches a lot—like pallet wrap, stretchable packaging for large goods—PVDC plain film is probably not the best call. Even the most stretchable modified PVDC is no match for PE stretch film here, and it’ll end up costing you more too, since PVDC resin is pricier.
- If you need a film that can stretch a little, enough to conform to small, awkward shapes or handle minor fitting during installation, standard PVDC plain film works if you use the right thickness. I usually recommend 1-2 mil thickness for those jobs—thicker than that is too stiff, thinner is too fragile when stretched.
- If you need stretchability and top-tier barrier protection, oriented PVDC film is your go-to. It’s not cheap, but it stretches way more than standard plain film, and it blocks moisture and oxygen way better than PE. I’ve sent this to food processing clients, medical device makers, and even people packaging art supplies that need to be airtight, and they love how it holds its shape when stretched without tearing.
I also get a lot of questions about stretching PVDC with machines, not just by hand. Like, if you’re running a production line and need to stretch a bunch of film automatically, is PVDC plain film a good candidate? The short answer is: only if you’re using oriented film. Standard plain film won’t feed through stretch wrapping machinery well because it’s too brittle and will tear. Oriented PVDC is designed to handle automated stretching, so it works great for high-volume packaging lines that need barrier protection.
Wait, let’s throw in a quick real-world example to make this real. A few months back, I had a customer named Mike who runs a specialty meat shop. He was using regular PE wrap for his cut steaks, but customers were complaining the steaks were drying out in the display case after a day or two. He tried PVDC film, but he was using plain, standard cast PVDC that only stretches 15%. He couldn’t get it tight around the steaks without it ripping. I recommended he try my 1.5 mil blown PVDC plain film, which stretches up to 50%, and told him to warm it slightly with a heat gun before wrapping. It worked perfectly—he gets a tight seal, no air or moisture getting in, and the steaks stay fresh for 3-4 days instead of 1. That’s the kind of use case I love, and it’s exactly why knowing how much PVDC film can stretch matters so much.
Another example: I had a construction client a while back that needed a temporary barrier to cover concrete floors while they were curing. They were using a thin plastic film, but it kept tearing when workers walked on it or when they had to adjust it around pipes. They tried my 3 mil PVDC plain film, which only stretches about 10% at room temp, and it was too stiff to fit around the pipes without snapping. I suggested they go with a 2 mil blown PVDC film, which stretches 50%, and it worked—they were able to stretch it just enough to fit around the pipes, it didn’t tear under foot traffic, and it blocked moisture way better than their old film. That’s the kind of thing that makes this job worth it, when I can match the right film to the right need.
Now, I know some of you are probably thinking, “But can I stretch standard PVDC plain film more than 20% if I use a special process?” Maybe with some additives? I’ve tested that too. Some manufacturers add plasticizers to PVDC resin to make it more flexible, which increases stretch. But the tradeoff is that those plasticizers reduce the barrier properties—so if you’re making film for food or medical use, plasticized PVDC is a no-go. For industrial uses where barrier isn’t the main concern, plasticized plain film can stretch up to 40%, but again, it’s not as good as regular PVDC for blocking moisture or gases. I only supply plasticized PVDC for specific industrial liner jobs, not for anything that needs that barrier.
So to wrap this all up (pun intended), the answer to “Can Polyvinylidene Chloride Plain Film be stretched?” is: Yes, but only so much. Standard, unmodified plain film only stretches 10-20% at room temp before breaking. Blown plain film can hit 50%, and oriented PVDC film can stretch up to 100% if processed right. Thinner films stretch more than thicker ones, and warm temps can boost stretch by another 20-30%. It’s not as stretchy as PE stretch film, but it’s way more barrier-heavy, which makes it worth it for the right applications.
If you’re wondering whether PVDC plain film is the right fit for your project, or if you need help figuring out which thickness or type will give you the stretch you need without losing the properties you care about—barrier strength, durability, whatever—hit me up. I’ve been supplying PVDC film for years, I’ve tested every type I carry in my warehouse, and I can help you pick exactly what you need, no sales pitch, no confusing jargon, just straight answers. I know how frustrating it is to get bad information about films, so I make it my job to get my customers the right product the first time.
Thermoforming Film References
- Mark, J. E. (2007). Polymer Data Handbook. Oxford University Press.
- Krevelen, D. W. van, & Te Nijenhuis, K. (2009). Properties of Polymers: Their Correlation with Chemical Structure; Their Numerical Estimation and Prediction from Additive Group Contributions. Elsevier.
- Modern Plastics Encyclopedia (2022). Polyvinylidene Chloride (PVDC) Film Grade Specifications. McGraw Hill.
- ASTM D882 – 18, Standard Test Method for Tensile Properties of Thin Plastic Sheeting. American Society for Testing and Materials.
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