Canned Food Seal and Seam Integrity QC utilizing a Vacuum Chamber

Did you know that canned food seam strength and integrity testing can be performed in an acrylic vacuum chamber? The setup is simple vacuum system; all you need is a vacuum pump with a vacuum chamber. We have made several of these systems before. As you can see, the elbow pointing upwards is a NW 50 vacuum connection which connects to a high CFM vacuum pump. We have done several of these types of chambers of the years.

We have a write up on: Quality Control of Seals and Seams of Canned Food or Food Containers you can read that article by clicking on the link above.

In this incident, our client had determined that seam strength of their food cans was inversely proportional to seam failures. Meaning that the stronger the seam of the food can was, the less failures occurred. In hindsight, this is a logical conclusion, however, sometimes this relationship between seam strength and seam failure must first be quantified.

Armed with this knowledge, our client had opened the door for a more versatile and cost-effective leak testing options. They were not looking for a high-priced helium leak testing system, nor were they looking for another low throughput high priced leak tester. Since they knew that seam strength was inversely related to seam failures, they were able to come to us and have us design a seam strength testing system by utilizing an acrylic vacuum chamber.

Their requirements were to introduce as much structural stress as possible as fast as possible onto their food can in order to induce buckling of seam. What we suggested was to get a high volumetric flow vacuum pump along with our smallest acrylic vacuum chamber and connect these two with a NW50 valve. It would take 9 seconds to evacuate the vacuum chamber from atmosphere to 1 Torr from the moment the valve opened.

As a part of their testing procedure, they would film the behavior of their food can. Their testing process would repeat every 5 minutes. If the can failed, the production canning line would stop. The engineers would review the video and determine the failure mode. There is some really cool video footage of fish parts flying and bouncing around the inside of a vacuum chamber which can happen if you have a weak seam and you have applied about 500 pounds to the tuna can within 9 seconds. Stuff goes from “zero to a hunnit real quick”

We never asked them what their cleaning procedure was after the fish explosion incident...

But we will ask you to Contact Us if you are testing seams on your food can production. I think you should at least give us the opportunity to take a look at your project.

We have many more resources on our website that you should check out

Our clients prefer to work with us because we are Experts in Custom Fabrication (especially Polymer Fabrication). Check out some of our other items we carry that you can combine/integrate with your systems or projects.

Vacuum Oven Systems
Vacuum Ovens are vacuum chambers and ovens combined in one system. Vacuum ovens are necessary during processes which require the specimen to be subjected to a hypobaric and hyperthermal environment. Our Vacuum Oven Systems enable to you run a complete vacuum vs time and temperature vs time profile. We also carry portable vacuum oven systems and custom vacuum oven systems.
Roots Blower Vacuum Pumps
Roots Blower Vacuum Pumps are used when a large amount of Volumetric Airflow is Required. Root Vacuum Pumps cannot operate independently and must be used in conjunction with another roughing pump such as Rotary Vane Pump or Piston Pump. The advantages of a Roots Vacuum Pump is that the Pumping Speed can be increased by a factor of 5 up to a factor of 10; meaning that a 20 CFM Rotary Vane Vacuum Pump can now be boosted to pump 120 CFM!
Our Work: Leak Quality Testing and Quality Control of Packets
Quality Control during Production runs is a very important procedure you must perform on your manufactured products. This is especially critical is you are an FDA manufacturer where regulatory compliance is important and necessary. Our Vacuum Chambers are specifically built to assist you meet your Quality Control and Regulatory compliance needs.
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An Acrylic Vacuum Chamber can be used to simulate elevation very reliably to altitudes up to 60.9 km or 200,000 feet. This provides several advantages over other testing methods as acrylic is transparent and enables full view of interior during testing. In this article, we will give you a through guide on what can be done to eliminate the risk of packaging damage during shipments at high altitudes.