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How to perform torque testing of bottle caps?

How to perform torque testing of bottle caps?

Are you tired of struggling with stubborn bottle caps that refuse to open? Or perhaps you're a manufacturer looking to ensure the quality and safety of your bottle caps? If yes, then it’s time to test the strength of bottle caps against opening. This can be done with Presto torque testing equipment. It is one of the high-quality lab testing equipment that can be used to test the strength of bottle caps and ensure the quality of bottles. Presto torque tester has been designed to test the torque strength of opening and closing bottle caps. This high-quality lab testing equipment has been designed to ensure that the bottle closures will be fitted properly.

Presto has designed a high-quality torque strength tester that measures the torque required to open a closed bottle cap. This testing instrument is widely used in the PET & Preform industry and measures the torque needed to open a closed bottle cap. In this blog, we will discuss brief information about the Presto torque tester and how this quality testing equipment is useful in testing the strength of bottle caps against opening torque.

Introduction to Torque Testing of Bottle Caps

Torque testing is a critical quality control measure for many industries mainly the bottle industry that helps the manufacturers in ensuring that the bottle caps will be properly tightened. Bottle caps must be properly sealed to maintain the freshness and safety of the contents inside. A torque tester can quickly and accurately determine if a bottle cap has been screwed on with the correct amount of torque.

A digital torque tester is more precise and easier to use and ensures that quality material will be delivered to the customers. The torque test will easily measure the amount of force required to rotate an object. Torque tests are commonly used to measure the strength of bottle caps, lids, and other fasteners.

Manufacturers of the bottle testing industry can easily perform twist-off tests on the materials and ensure that quality materials will be delivered to the customers. You can read more on why it is important to test caps and closures accurately.

Now, let us discuss a brief para about the Presto torque tester and its features and technical specifications.

Test the torque strength of bottles with the Presto torque tester

Bottle caps are one of the most common types of closures that need to be tested frequently in order to ensure the quality of products. They must meet certain specifications in order to ensure a tight fit and correct dispensing of products. However, due to their varied shapes and sizes, it can be difficult to determine the torque necessary to properly secure them.

Thus, to make it easy for the PET manufacturers to conduct the torque test on these bottle caps, we at Presto have designed a Presto torque tester-HMI motorized model. This high-quality lab testing instrument will accurately measure the torque needed to open a closed bottle cap. It is widely used in the PET bottle industry where there is a need to test the bottles frequently.

This high-quality laboratory testing instrument has been equipped with auto-stop and restore functions that will automatically stop the machine when it touches a 90-degree angle and restore the machine to its starting position. It has also been equipped with strong clamping pegs/holders for zero slip gripping support. The sample will be placed between the anti-slip holders/pegs for zero slip gripping support.

Using an accurate torque tester is the easiest method to perform torque tests on PET bottles. Now, let us discuss the features and technical specifications of this quality testing equipment.

Features of Presto torque strength tester

  • Strong clamping pegs/holders for zero slip gripping support
  • Height adjustable clamping mechanism to hold the different sizes of bottles
  • Automatic restoration to initial position after test completion
  • In-house calibration facility
  • Precise measurement of torque
  • Digital Display for accuracy and repeatability

Technical specifications of Presto torque tester

  • Max. Torque Range: 80 lb-inch
  • Accuracy: ± 0.5 lb.-inch (with master weight)
  • Least Count/Resolution: 0.1 lb-inch
  • Power: 220V, Single phase, 50 Hz
  • Display: Digital
  • Torque Monitoring Peak Load indicator with Digital readout and peak hold feature
  • Minimum Diameter for specimen holding: 20 mm
  • Maximum Diameter for specimen holding: 130 mm
  • Max. size of test bottles to be tested: 2.5 litres
  • Sample Size: Min. height 70 mm & Max. height 400 mm

With these high-end features and technical specifications, manufacturers can easily conduct torque strength tests on the materials. You can read more on the importance of torque testing in the PET bottle industry.

Now, let us discuss some easy-to-follow steps to perform a torque test.

Easy to perform steps to perform torque test on PET bottles

To perform torque tests on PET bottles, manufacturers can easily follow the steps mentioned below:

To conduct a torque test using the Presto torque tester HMI motorized model, you can easily follow the steps mentioned below.

  • Plug in the mains plug into a 3 Pin - 5 Amp power socket. Turn the machine ON.
  • Rotate the jaw-adjusting knob in the anticlockwise direction to take the jaws apart.
  • Place the sample of the bottle to be tested on the test platform.
  • Adjust the specimen holding pegs according to the size of the specimen.
  • Place the specimen properly in such a way that it is perfectly straight and touches all four pegs at a given time.
  • After placing the specimen, tighten the jaw-adjusting knob properly by revolving it in a clockwise direction.
  • Place the upper closure on the bottle sample and adjust it according to the height of the sample and tighten the knob appropriately.
  • The Load display might show some readings due to previous test values.
  • Once all the above steps are performed, you can easily commence the test.

By following these steps, one can accurately conduct torque tests on PET bottles and ensure that the quality of materials will be delivered to the customers. Give us a call at +91-9210 903 903 or email us at to get a live testing session for this testing instrument for free.

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