Hey there, thanks for popping in! If you’ve ever cracked open a cold soda, seltzer, iced tea, or energy drink and wondered how that shiny little can got from a raw material to your fridge shelf, you’re in the right place. As a beverage can supplier, I field questions about this process all the time—people are always surprised by how much goes into a can that’s gone in 10 minutes once you crack the top. Let’s break it down step by step, no boring jargon, I promise. Beverage Can
First off, let’s talk about what a can even is these days. When I started in this biz 12 years ago, most cans were two pieces: a body and a separate top. Now? 90% of what we supply is “two-piece cans,” and honestly, they’re way more efficient (and way easier to stack in your pantry). The main material? Aluminum. Wait, why not steel these days? Aluminum is lighter, easier to recycle, and it doesn’t rust like steel does if there’s a tiny scratch from a line or a warehouse ding. Also, it’s way better at keeping drinks cold—if you’ve ever grabbed a warm beer from a steel can vs. an aluminum one, you know the difference.
The raw material starts as big, flat aluminum coils, like giant rolls of foil but way thicker and sturdier. Picture something like 2 tons of aluminum rolled into a roll that’s as wide as a small car. We source these coils from trusted mills (no random sketchy stuff here—consistency is everything) and they get shipped straight to our factory where the magic begins.
Step one: slitting. The big roll goes into a machine that slices it into tiny, perfect circles, called “blanks.” Think of it like using a giant cookie cutter, except instead of dough, it’s aluminum, and these blanks are about 5 inches across for a standard 12oz can. Each blank is super thin, like 0.1 mm thick, but strong enough to hold 12oz of fizz without bending. We crank out hundreds of thousands of these blanks an hour—our line can do around 1,800 a minute, which is wild when you stop to count.
Next up: deep drawing. This is the part that turns a flat circle into a cup shape. The blank gets fed into a press that’s like a fancy metalforming machine. First, it pushes the blank into a small die, stretching it into a shallow cup. Then, that cup gets pushed through another deeper die—this is the “draw and iron” stage, where the walls get stretched thinner than the bottom, which stays thick for strength. If you’ve ever held a can, the bottom is way sturdier than the sides, right? That’s why—we don’t want the bottom caving in when you set a 12-pack on it. The ironing step also makes the walls uniform, so the can will hold pressure from the carbonation later. After deep drawing, we have a little can cup, like a tiny metal cup that’s missing the top rim and the bottom is flat for now.
Wait, can I be real with you? When people ask why two-piece cans are better, it’s this step mostly. One-piece bodies mean fewer seams, which means less chance of leaks, less material waste, and way faster production. Back in the day, they had to weld a side seam on the can body, which added extra steps and sometimes little gaps that would let air in and make the drink go flat. Two-piece cans eliminated that whole issue—game changer for the beverage industry.
Once the cups are formed, they go into a “necking” machine. This is where we shape the top of the can, the part that holds the lid and the pull tab. First, we “neck it down”—so the top of the cup gets narrower, like how a soda can is skinnier at the top than the body. Then, we “flange” it—rolling the very top edge outward so the lid can crimp on later. The necking process has to be super precise; if the neck is too lopsided, the lid won’t seal right, and that’s a huge waste. Our quality team checks every 100th can or so to make sure the neck is perfectly round, no burrs, no dents.
Now, those cans are all metal, right? If we just poured soda into them, the acid from the drink would eat through the aluminum, and you’d get that metallic taste you hate from a cheap foil tray. So next step: coating. Inside and out. First, the inside of the can gets a thin, food-grade polymer coating—think of it like a invisible plastic liner that keeps the drink from touching the aluminum. We use water-based coatings these days, way better for the environment than old solvent-based ones, which is a big win for both us and our customers who care about sustainability. The outside gets a printed coating too—this is where the fun stuff happens: the brand logos, the colors, the nutrition facts, all that stuff. We print up to 6 colors in one pass, super vibrant, and the coating is durable enough to withstand being stacked, getting knocked around on store shelves, even sitting in a hot car for a day (though we don’t recommend that for your drink, the can will be fine). After coating, the cans go through an oven to bake the coatings on—high heat, like 400 degrees, so the polymer is hard and non-toxic once it’s cooled.
Wait, let’s not forget the lid! I almost left that out, because it’s a whole separate part. The lids are also aluminum, but they’re a bit thicker than the can body because they have to hold the pressure of the carbonation and the pull tab mechanism. Lid production is pretty wild too: little blanks get stamped into the lid shape, then the pull tab and the seal (a thin rubber ring that makes the can airtight) get added. The lid’s seal is another critical part—if it’s not seated right, the can will go flat before it even hits the shelf. Our lid supplier uses the same quality standards we do, so we never have to worry about bad lids.
Once the bodies and lids are done, they go through a final quality check before they’re packed. First, the cans get “leak tested” — a machine fills them with air and dips them in water; if any bubbles come out, that can is rejected. We also check for dents, scratches, misprints, any little flaw that would make a brand’s product look bad or fail to seal. We reject way more cans than most people would guess—like 2-3% of the 1.8 million we make an hour—because perfection matters. A brand’s reputation is on every can, so we don’t cut corners here.
After passing inspection, the empty cans get packed into giant pallets, each with thousands of cans, wrapped tight in plastic so they don’t get damaged during shipping. They’re ready to be filled, sealed, labeled, and shipped to your favorite beverage brand, which then fills them with whatever drink you love.
Now, I know a lot of people care about sustainability these days, and as a can supplier, that’s something we prioritize too. Aluminum is 100% recyclable, infinitely, without losing quality. You can melt down a soda can and turn it into a new can in as little as 60 days—way faster than glass or plastic. We source our aluminum from mills that use recycled content as much as possible (we’re at 70% recycled aluminum for our cans right now, and working to get higher). Also, the entire process is way more efficient than people think—less material waste, less energy used, than making plastic bottles or glass jars. A lot of brands are switching to aluminum cans these days because it’s better for the planet, and our customers love that.
Let me be straight with you, too—there’s a reason why I’ve been in this business for 12 years. It’s not just about making metal cups. It’s about making something that works for small craft soda brands and huge national brands alike. A craft brewer making hard seltzer needs cans that can keep their small-batch drink fresh, and a big soda company needs millions of perfect cans a week. We handle both, no problem.
If you’re here because you’re looking for a beverage can supplier—whether you’re a small brand just starting out, or a big company needing bulk orders—hit me up. I know how overwhelming it can be to navigate all the specs, coatings, sizes, and sustainability requirements. I’ll walk you through it, no salesy garbage, just honest answers. We can talk about your needs, get you a quote, and make sure you get exactly the cans you need, on time, no headaches.
Packing Machine References:
- Aluminum Association. (2022). Beverage Can Manufacturing and Recycling: Industry Overview.
- American Iron and Steel Institute. (2021). Comparative Life Cycle Assessment of Beverage Packaging Materials.
- National Container Manufacturers Association. (2023). Two-Piece Aluminum Can Production Process Standards.
- International Food Packaging Association. (2022). Food-Grade Coatings for Beverage Cans: Safety and Compliance Guidelines.
Xiamen Uniteam Sourcing Co., Ltd.
As one of the most professional beverage can manufacturers and suppliers in China, we also support customized service. Please feel free to buy high quality beverage can made in China here from our factory. For more information, contact us now.
Address: ROOM 1511, NO. 939, XIAHE ROAD, SIMING DISTRICT, XIAMEN, FUJIAN, CHINA.
E-mail: operator@minjiapack.com
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