Once the cap to sealing head gap is properly set the sealing window of each product needs to be determined. Use the following steps to determine the window.
- Ensure the conveyor speed is set properly for the product being tested.
- Ensure the container and caps are free of defects and are compatible with each other. Also check to ensure the torque is correct for the cap size being used.
- Start unit and set the output % at minimum and run a single container. Check the container for a seal.
- If no seal was achieved, increase the output % in increments of 10% until a partial seal is achieved, increment by 1-2% until a complete seal is achieved. If a partial seal was achieved, increase the output % in increments of 1-2% until a complete seal is achieved. This is the minimum set point of the operating window.
- Once the minimum set point is established, increase the output % by 1-2% until the liner or cap show signs of overheating. Decrease output by 1% until the overheating is eliminated. This is the maximum set point of the operating window.
- Now that the operating window is established, test the application in the range of output from minimum to maximum to determine at what output % the best seal is achieved. This will be the production output level.
- Position and run a tightly grouped number of containers that will completely fill the sealing head. Verify the output % on the meter remains constant and that the seal results are the same on all containers run.
- Record the minimum/maximum output % of the window, production output %, line speed, cap, liner material and container information for future reference.
- Repeat all steps for each application that is run on the equipment.
This information is a useful tool that helps decrease the time required for changeover between products, as well as troubleshooting to help determine if you have a package or equipment problem. More questions? Contact us today!