Yes, absolutely. In fact, most trash can factories are already built around cylindrical molds, because round bins are the industry standard for everything from kitchen step cans to industrial drums. The rectangular bin is the exception, not the rule.

Let me walk you through the engineering and production reality.

First, look at how a typical trash can is manufactured. The most common process is rotational molding or injection molding. For rotational molding, the mold itself is a hollow shell that rotates on two axes while heated plastic fuses to its inner surface. Making a cylindrical shape is mathematically simpler than making a rectangle—there are no sharp corners to fill, no stress points to crack, and the material thickness stays more uniform. A cylinder also demolds easily because its straight vertical walls allow the part to slip off the pattern without complex sliding cores. A rectangular bin, by contrast, needs additional draft angles and often requires collapsible cores to release the part. That adds cost and cycle time.

Second, consider structural strength. A cylinder naturally resists hoop stress. When you push against the side of a round can, the load is distributed continuously around the circumference. A rectangle concentrates stress along its flat panels and corners, so it needs thicker walls or internal ribs to prevent bulging. In practical terms, a cylindrical can can be lighter and still outperform a rectangular one of the same volume. Factories love this because it means less resin per unit, faster cooling times, and lower shipping weight.

Third, what about lids and wheels? Standard round lids are cheaper to produce because they are molded with a simple single-cavity tool. Rectangular lids require a more complex perimeter seal and often need hinges or clip details that make the mold more expensive. For wheeled carts, a cylindrical body pairs perfectly with a dome lid and a steel axle that snaps into pre-cut slots. Many municipal waste carts are actually tapered cylinders—slightly wider at the top than the bottom—so they can nest inside each other for efficient shipping. That nesting feature is nearly impossible to achieve with a rigid rectangular geometry.

If your factory currently uses a rectangular mold, switching to a cylinder is not a matter of tweaking the recipe. It is a matter of swapping the tooling. But since most mold shops have existing round tooling for common sizes—20-liter, 60-liter, 120-liter, 240-liter—the transition is straightforward. You just need to confirm the wall thickness, the resin grade (usually high-density polyethylene for outdoor durability, or polypropylene for indoor use), and the surface finish (smooth versus a textured diamond pattern for grip).

So the answer is not only yes, but it is also probably easier than what you are doing right now. Send me the target dimensions and the volume you need, and I can advise on the exact mold configuration, the cycle time, and the per-unit cost. Cylindrical trash cans are not just possible—they are the smarter choice for nearly every application, from home kitchens to construction sites. If you want samples, we can pull a small 10-liter cylinder off the line today and ship it to you by Friday.