Can End Deep Dive: B64 vs CDL - A Comparative Look

alna-packaging-b64-cdl-can-ends-difference-comparison

Behind every great beverage, there's a carefully chosen can end. It might not be the star of the show, but it sure plays a crucial role. In the lineup, B64 and CDL (Countersink Double Seam Lid) can ends are the two most common format, each with their own strengths.

We're here to walk you through what sets these two apart, and how they fit snugly into your next production run.

At a glance

Feature/Aspect	B64 Can End	CDL Can End
Material Thickness	Thicker, more material	Lighter, less material
Environmental Impact	Higher due to more material used	Lower, more sustainable
Industry Usage	Traditional standard, widely used	Innovative, growing in popularity
Pros	Durable, widely accepted, easy to open	Eco-friendly, lower material costs, subtly smoother opening
Cons	Higher environmental impact, heavier	Less established, may need seamer/line adjustments

In summary - The B64 is the traditional go-to, known for its tested reliability and durability, albeit being a heavier option. On the flip side, the CDL is a newer, lighter alternative that offers a subtly smoother opening experience. However, it's important to note that CDL might require adjustments to seamers or production lines. And ultimately, the choice depends on balancing these factors with your specific packaging needs.

Essential steps before switching between B64 and CDL

So, you've weighed the pros and cons and decided it's time for a change. Switching from B64 to CDL can ends (or vice versa) isn’t just a matter of flipping a switch, it’s a strategic move that requires some prep work. Just like you wouldn’t use a Phillips screwdriver on a flathead screw, you can’t use mismatched tools in the seaming process. If the chuck and roller don’t fit the can end perfectly, you could end up with dents, bulges, or even leaks, none of which are good for your product.

Here's a general game plan, broken down into some digestible steps, to ensure that the transition is as smooth as your favourite brew.

Seamer Adjustment
• Chuck and Roll Profile: Match seamer components to the can end type. Incorrect matches can lead to poor seams or can damage.
• Seaming Operation: Calibrate seamer pressure and motion for the specific end type to ensure an airtight and damage-free seal.

Quality Control Checks
‍• Conduct thorough inspections for seam integrity and consistency. Ensure no leaks and recalibrate seam inspection equipment as needed.

Staff Training
• Educate operators on equipment adjustments or new machinery handling to maintain production quality and efficiency.

Trial Runs:
• Perform test batches to adjust the process and address potential issues before full-scale transition.

And there you have it – a roadmap to a seamless switch in can ends. Like a well-crafted brew, a successful transition is all about attention to detail and a bit of patience. Cheers to your next successful venture in canning🍻.

Glossary

Glossary	Image	What does that mean
Chuck		The chuck is like a steady hand that holds the can end in place while it’s being sealed, similar to how you hold a nail before hammering it in. The upper chuck fits into the top of the can end, ensuring it stays steady during sealing.
Roller		The roller is like the hammer that presses and folds the can end’s edge (the curl) around the can body. First and second rollers perform different tasks in forming the seam.
Can End Curl		The edge of the can end that is folded around the neck flange during the seaming process to form a tight, secure seal, similar to how the rim of a pie crust is crimped to secure the filling inside.
Neck Flange		The part of the can body that connects with the can end curl. It provides a surface for the can end to be attached securely during seaming.
Countersink		The countersink is like the groove in a screw head that lets a screwdriver fit snugly. It gives the can end extra strength to withstand pressure and helps keep the seal tight.
Double Seaming		Double seaming creates a secure seal by folding the can end’s curl around the neck flange twice, ensuring no leaks and keeping the can airtight. The process involves both a first and second operation to form and lock the seam.