Vision Inspection · 2026-11-03

Loose Caps on 18L Cooking Oil Cans: A Vision Inspection System Instead of the Human Eye

A camera above the line photographs the cap of each passing can and automatically judges whether it is properly closed. Cans are inspected as they flow, without stopping the line.

The problem: checking caps by eye all day

This is a line producing 18-liter cooking oil cans. Workers were checking the cap closure of each can by eye.

A single loose cap can cause leaks and lead to customer complaints. But it is hard for a person to check every can with the same focus all day long.

The solution: VS1000 cap-closure vision inspection system

PEC proposed a cap-closure vision inspection system that stands beside the existing line.

  • A camera above the line photographs the cap of each passing can.
  • The cap position and condition are judged automatically on screen.
  • The OK result for each inspection item is shown right away.
  • Cans are inspected as they flow, without stopping the line.
  • A signal tower shows the status even from a distance.

The result: people only check cans that trigger an alert

No one needs to look at every can: the vision inspection system judges each one by the same standard without missing any. Workers only need to check cans that trigger an alert.

Because it stands beside the line instead of requiring changes to the existing line, it can be applied as-is to lines for large containers such as 18-liter cans.

Suitable for sites like these

  • Sites that have had complaints about loose caps or lids
  • Sites where it is hard to assign dedicated inspection staff
  • Sites producing large containers such as jerrycans and cans
Site
18L cooking oil can production line
Equipment
VS1000 cap-closure vision inspection system
Inspection method
Camera capture → automatic judgment of cap position and condition
Installation
Stands beside the existing line

Frequently asked questions.

Can you inspect our containers and caps too?

We set the camera position and judgment criteria to match the shape of your container and cap. We offer a free test with your own containers and caps.

Do we need to stop the line to inspect?

No. Cans are photographed and judged as they move along the conveyor.

Our line too
Can I change it?

Sample testing is free. If you send us the product, we will send you a video of the results.