All Member Forum

Hey Chris, the short answer is...sometimes.

Several factors need consideration here in order to avoid re-torquing;;

• proper engagement of the cap and container
• the capping equipment being used
• distance between the capper and the induction sealer
• is the capper providing optimal on-torque before induction sealing 
• choice of material i.e. plastic jar/plastic cap vs glass container/plastic cap

Despite all of these conditions being addressed some processors do re-torque for additional 'insurance' of sorts

Every situation can be quite unique.

Hope this helps somewhat.

Feel free to reach out if you'd like to discuss this in greater detail.

Happy to help if I can.

Martin  

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Martin T. Downey CPP
Sr. Partner
365-999-6121
martin@brandedproductions.ca
www.brandedproductions.ca
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Good morning Chris,

Retorquing is employed if required by the country for child-resistant (CR) features.

Typically, the US mandates retorquing based on group studies. The EU's requirements vary, as they often use more blisters and creams.

The primary objective is to ensure that the 'removal torque' falls within a specified range using a torque testing method.

Several factors determine the need for retorquing, with the key factor being a specified removal torque (in-lb, N·m) necessary to meet product standards.

Application torque tables for thread types and specific bottle diameters are widely available online. As a general rule, removal torque is half of the application torque.

Additionally, Martin Downey's description accurately reflects the true answer.

Best regards,

Henry

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Henry Williams
Global Packaging Technology (Equipment / Serialization)
Organon
Rockford IL
(779) 256-8404
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Hi Martin, Robert and Henry,

Thank you all very much for your input on my retorquing question! I have typically had retorquers on all induction sealed packaging lines. I have spoken with a few people lately that said they did not have a retorquer on their packaging line with induction sealed products. I wanted to put the question out there to see what others had to say.

Again, thank you very much for your response and input! Much appreciated!!

Chris

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Chris Thompson CPP, PMP
Process Engineer II
Novo Nordisk
Durham NC
(919) 634-5496
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Original Message:
Sent: 11-21-2024 08:33 AM
From: Henry Williams
Subject: Retorquing after Induction Sealing?

Good morning Chris,

Retorquing is employed if required by the country for child-resistant (CR) features.

Typically, the US mandates retorquing based on group studies. The EU's requirements vary, as they often use more blisters and creams.

The primary objective is to ensure that the 'removal torque' falls within a specified range using a torque testing method.

Several factors determine the need for retorquing, with the key factor being a specified removal torque (in-lb, N·m) necessary to meet product standards.

Application torque tables for thread types and specific bottle diameters are widely available online. As a general rule, removal torque is half of the application torque.

Additionally, Martin Downey's description accurately reflects the true answer.

Best regards,

Henry

------------------------------
Henry Williams
Global Packaging Technology (Equipment / Serialization)
Organon
Rockford IL
(779) 256-8404
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