Screw torque of pump dispensers

We perform a variety of tests on our pump products. One of which is to evaluate their release torque. In order to precisely apply torque to screw and unscrew the pumps, we use Mecmesin equipment. These instruments prove their value to us through their ease-of-use and accuracy.

Christoph Syzmiczek, Manager Technical Service
Consumer Health Care Division, Aptar Pharma

Requirement

Pfeiffer, based in Germany, are a leading manufacturer of atomisers and dosing systems for the pharmaceutical and cosmetics industries. The company required a torque test unit to measure the application and release torque of their pump products.

In particular, they wanted to define the correct level of screw torque required to seal the pump dispenser to the container. Incorrect settings for torque application on the production line would result in poor performance of the pump dispenser and leakage of the contents.

Having used Mecmesin force test equipment in the past, Pfeiffer contacted Mecmesin with this new application.

Solution

Mecmesin provided a Tornado manual torque test instrument capable of measuring clockwise and counter-clockwise torque movement. To perform the test, the bottle container is securely positioned between the four gripping pegs.

The pump dispenser is screwed onto the bottle using between 0.8-0.85N.m of torque. The seal tightness of the pump dispenser is then checked and the application torque determined.

To measure the removal torque, the device is set for counter-clockwise measurement and the pump dispenser unscrewed from the bottle.

Test equipment

Company Info

  • Company: Pfeiffer (now Aptar Pharma)
  • Industry: Medical
  • Pfeiffer, based in Germany, are a leading manufacturer of atomisers and dosing systems for the pharmaceutical and costmetics industries. Ing. Erich Pfeiffer GmbH is a member of the Aptar Group.
Company website

https://pharma.aptar.com

OrbisCap torque tester

Basic
Orbis

The Orbis digital torque tester is ideally suited for basic clockwise and counter-clockwise torque tests.

Manually operated and measuring up to 6 N.m its capacity is ideal for most caps and closures which are intended to be opened by hand.

Providing data with significantly greater accuracy than analogue torque devices, it’s a simple and cost-effective solution for a variety of torque applications.

Orbis manual digital torque tester device photo
Advanced
Tornado

The Tornado digital torque tester is ideally suited for the testing of application and removal torque on caps and closures.

Manually operated, the Tornado range has 4 models with capacities ranging from 1.5 - 10 N.m to cover almost all closures types and sizes.

Its ability to detect initial bridge torque and peak torque make it the instrument of choice for testing closures with tamper-evident seals.

Tornado manual digital torque tester device photo
Clean-room
CAPTEST

The CapTest digital torque tester is ideally suited for basic clockwise and counter-clockwise torque tests where the testing environment calls for greater protection.

Manually operated and measuring up to 5 N.m, its stainless-steel housing lends itself for testing caps and closures in medical & pharmaceutical clean-rooms and production areas where the risk of liquid splash is high.

CapTest clean-room manual digital torque tester device photo

The Orbis digital torque tester is ideally suited for basic clockwise and counter-clockwise torque tests.

Manually operated and measuring up to 6 N.m its capacity is ideal for most caps and closures which are intended to be opened by hand.

Providing data with significantly greater accuracy than analogue torque devices, it’s a simple and cost-effective solution for a variety of torque applications.

 

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