Eliminate the variability of cap rotation

Automated torque testing eliminates the variability of all four key process variables cap rotation, top load, bottle clamping, and cap gripping pressures.
Mesa Labs torque testers simplify and automate data management and comply with 21 CFR part 11.
Customize the test method and alarm limits to the process variable specifications in your capping.
Eliminate universal tooling variability with our customized torque engineering design services.

Maximize up-time on your automated torque tester leveraging Mesa Labs on-site torque service capabilities.
Why choose Mesa Labs?

  • Mesa’s ISO 17025 accredited calibration lab can send a technician on-site to calibrate your torque equipment.
  • Our dedicated validation engineer provides customized factory acceptance testing and Installation/Operational Qualification protocols.
  • Comprehensive technical support available online, over the phone, and on-site.
  • Mesa torque testers are calibrated to ASTM D3474-90 standard using NIST traceable dead weights and the dynamic Gold Bottle torque verification standard.
  • Digital storage of calibration certificates for audit and traceability.

Download the white paper on variability in torque testing by filling out the form on this link https://info.mesalabs.com/torque-beverage-bottling

Universal Torqo Chuck

Torque analyzers are customized for the specific bottle and cap combination to be used on the unit. Chucks are most often designed to match the serration patterns of each cap resulting in additional change parts, complicated changeover processes and greatly increased cost to the end-user.

As an increased variety of closure designs have gained prominence and popularity in the industry, Mesa Labs has developed a new Universal Chuck to accommodate multiple serration patterns and capsizes with a single change part.

Features

• Fits any Torqo model 1502 – 1600 torque testers

• ROPP cap compatible

• Tapered fit to accommodate most 26–32mm OD caps (CR, CT, TEB, etc)*

• Compatible with various serration patterns

• Eliminates the need for multiple chucks

• Non-destructive (does not leave marks when used properly)

• Compatible with smooth caps (torque limitations apply)

Contact us today for pricing info or to inquire about universal chuck designs for other cap OD ranges.

Serrated caps torque testing

Serrated caps frequently used in the beverage and pharmaceutical industry are prone to slippage during torque tests especially when used with hand testers or “universal” type chuck solutions. Torqo, the computerized cap torque testing unit offered from Mesa Labs, offers a customized chuck for each bottle and cap type developed from samples provided by the customer. These customized chucks provide significant advantages including:

1. Ensuring the most accurate testing because the EDM chuck is designed to exactly fit the unique serration pattern of the closure.

2. Allowing for consistent and repeatable testing because the chuck fits the cap the same way each time. It cannot be adjusted.

3. Reduces the prep time before the test because the user does not have to re-adjust the universal plugs.

Using a customized chuck for cap torque testing not only will provide more consistent results but also will save set up time for the user and thus increase productivity.

To receive a quote based on your exact bottle and cap, contact LSI today.

Bottle Cap Torque Testing: Why is it Important?

The cap torque tester is used in the packaging industry to measure the opening or closuring torque of the screwing cap. It is a piece of specific quality control equipment that can be placed on the production line or in the laboratory.

A torque tester is required during the packaging design process.  It can be used as a destructive tester to identify if there is any material weakness of the packaging during the screwing process. It also allows one to define the torque tolerances of the capping machine. The lower torque limit is considered the minimum pressure of the cap to avoid any leak of the product. This torque test needs to be combined with a leak test with secure seal analyzer. The higher torque limit is the maximum torque the customer can apply to open or close the product’s cap.

Once torque tolerances have been defined, the cap torque tester is used as a torque control device on the final product. If measurements are out of the limits, the capping machine needs to be adjusted. Depending on the production process, it could be necessary to control the opening torque, 24 hours after the packaging process. Temperature variations can modify product characteristics with a result of different torque measurements.

The History of Cap Torque Testing

Over time, the subjective feeling of cap tightness triggered the development of more reliable and consistent measurement devices, such as the spring based manual torque tester (analog). By the late 1980’s, ergonomic concerns and repeatability issues (such as varying cap gripping pressure and employee joint/muscle issues) lead to the development of manual (digital) and automated torque testers. Ever since, changes in materials, marketing themes, transportation methods and packaging aesthetics and processes (induction sealing, hot filling) have created new challenges and drives continuous product improvement on this field.

Why is Cap Torque Important?

Consumers judge bottled product quality based on many observations:

1. The appearance of the package.

2. The appearance, efficacy/taste of the product.

3. The ease of opening and re-sealing the closure. Brand owners, bottle cap/bottle suppliers are under tremendous pressure.

They must:

1. Reduce the cost of the packaging (lightweight, 1 vs 2 piece enclosures).

– Lightweight bottles are pressurized to maintain product quality and package integrity. Insufficient torque and a resulting bad seal can reduce shelf life, cause product leaks, and the bottles can collapse when stacked in multiple rows.

– Lightweight caps are more sensitive to over-torquing. Over-torqued caps can develop cracks causing product spills and shelf life issues.

2. Improve the shelf-life of the products (hot-filling, induction sealing).

– The different thermal expansion contraction rates of the cap, liner and bottle materials, the varying dwell times between cap tightening and release torque measurements can all result in different release torque values.

– Too much torque can cause wrinkles on the foil resulting in a bad seal, spills and reduced shelf life. If the threads strip, or the applied torque is too low, the foil will not be seated properly resulting in shorter shelf life.

3. Maintain the quality of the product while innovating package design, improving aesthetics, ergonomics and security (tamper evident band, child-resistant design).

– Example: User configurable cap that can function both as Child-Resistant (CR) and nonCR closure. Such design increases QC requirements: The torque must be monitored to maintain good induction seals. The CR functionality (shelling/reverse ratchet/topload) needs to be controlled.

For more information, contact your Life Scientific expert today.

The Torqo 1600 Accessories

The Torqo 1600 is easy to use, easy to set up, easy to move and low maintenance! Tooling is available for any threaded closure – including child resistant caps – and this compact unit delivers and stores precise results at the touch of a button.

It now comes pre-equipped with Universal Torqo Chuck, As an increased variety of closure designs have gained prominence and popularity in the industry, Mesa Labs has developed a new Universal Chuck to accommodate multiple serration patterns and cap sizes with a single change part.

The torqo can be fitted with the all new Model 1506 Beverage Bottle Clamp is a quick-acting bottle holding device that can be easily adjusted to accommodate from 10 oz. to 3 liter bottle sizes.

The Model 1624 Quick Clamp Vise is an easy to use bottle holding fixture that combines the flexibility of a lead screw pin vise with the rapid loading and unloading of an over-center type clamp. This vise is capable of holding round bottles from 5/8-inch diameter to 6 inch diameter and square bottles from 5/8-inch to 6 inch. Short and long pins are available.

The 1626 Slide Chuck can be used to torque test roll-on-pilfer proof (ROPP) caps which are commonly used to package product in the alcoholic beverage and wine industries. The unique jaw sets allow the chuck to grip the rolled on serration patterns of the cap in order to perform both destructive and non-destructive torque testing.

The Yoke Chuck extends our testing capabilities beyond the average continuous thread and Child-Resistant closures. This chuck can accommodate unusually tall and odd-shaped closures such as finger tip sprayers/pumps and trigger sprayers/pumps which are commonly used in the pharmaceutical, chemical and cosmetic industries. The unique interchangeable jaw sets allow the chuck to grip virtually any serration patterns for cap diameters up to ~100mm.

With a 1507 Calibration Kit, the accuracy of your Torqo can be verified or a complete on-site calibration can be performed by the user. Contained in this kit is a precision Calibration Disk, a ball bearing load support assembly and the necessary hardware to use this kit. The weights required for performing a calibration are not included in the kit but may be purchased from Mesa Laboratories, Inc.

And one of the most demanded Torqo Accessories is the Child Resistant Closure Option.

The Model 1605 Child Resistant Closure Option enables the Torqo to be used for measuring the removal torque on the child-resistant type cap that requires a downforce in order to be opened. An air supply with the ability to provide a minimum of 60 PSI is required for this option. Both an air filter and an adjustable air regulator are contained in this kit and permanently mounted to the drive cover. The installation of this option on a Torqo does not affect in any way its use on conventional bottles and caps.

To find out more about the Torqo 1600 or the available accessories, please give us a call at 800-829-5741.

ST-120S Industrial Cap Torque Tester

The ST-120S features a servo drive control, infinite chuck rotation, quick-change tooling, a color touchscreen interface, and faster cycle times.

The corrosion-resistant stainless steel head enclosure and anodized aluminum frame construction makes the ST-120S ideally suited for the most demanding applications, such as testing closure torque at Carbonated Soda Drink (CSD), juice, bleach bottling operations as well as cleanroom environments.

The unit is equipped with anti-bridging, anti-tie down anti-repeat dual actuation safety start switches, but for maximum operator safety, the ST-120S can be also equipped with a full machine guard.

Applied Torque: The ST-120 can be used as a benchtop capper, tightening the cap to a customer-defined setpoint.

Release Torque: The ST-120 is designed to accurately measure the release (thread break) torque of a cap.

Peak/Transient Torque: The standard ST-120 can measure and display the Applied or Release Peak in a torque testing cycle, however with optional hardware upgrades it is also possible to measure certain torque transients such as the engagement torque of a CR closure system or the peak of the bridge break torque of a Tamper Evident Band.

Container/Closure Fatigue: By allowing the ST-120 to apply and release the cap a number of times, it is possible to evaluate the effect of fatigue on the torque retention and seal quality of the closure and seal.

Release and Re-apply Torque: When packaging expensive products it is often required to return the tested container to the packaging line. By automatically re-applying the torque to the operator defined setpoint it is possible to save the product.

Topload Force (optional): This feature allows the monitoring and control of the top load force. When testing child-resistant caps or other closures requiring top load adjustment this feature allows the evaluation of top load force in the function of rotation and torque.

The S-120 comes equipped with the following features:

  • Real-time, automatic display
  • NIST traceable calibration procedure
  • Strain gauge transducer technology
  • Automatic container clamping and closure gripping
  • Adjustable torque application speed
  • Counterbalance system for height adjustment
  • Infinite rotation (SERVO)
  • Encoder to measure the angular degree of rotation
  • Heavy-duty components

Contact us for the latest pricing and availability updates.

Why should Mesa Labs perform your calibration?

Since Mesa Laboratories are the ones that made your machine, they’re the best ones to calibrate it. Unlike 3rd party calibration labs that may lack familiarity with our testers, our technicians have the most intimate understanding of proper calibration techniques. This means we can ensure that your torque tester will be optimized for the best possible performance and most accurate data.

There are two ways to get your device calibrated:

  • Send it in

Send your equipment back to us for calibration or repair by downloading the RGA form below, and including it in your shipment.

https://mesalabs.com/wordpress/wp-content/uploads/2019/05/19-Order-Form-Torque-RGA-R04.pdf

  • On-Site

Let us come to you! Simply fill out the form below and we’ll give you a quote for us to perform on-site calibration or repair at your facility.

Keep in mind that regular calibration ensures that you’re getting the most accurate results which can greatly improve your ROI and avoid production loss and costly recalls. We recommend calibration be performed at least every 12 months.

What does a Mesa Labs calibration include?

During our standard calibration procedure, we calibrate the display to both clockwise and counterclockwise directions and check the linearity with 4 different torque standards. After calibrating your torque tester, we prepare a NIST traceable certificate for you.

The workflow concept for both calibration service options is as follows:

  • A thorough inspection of your analyzer
  • Make sure it meets all original specs
  • Clean the analyzer and the area immediately around it
  • Inspect all tooling and accessories
  • Complete all paperwork and certification documents
  • Review any questions with your operator(s)

Contact us today for any questions or requests regarding your cap torque needs.

Program Your Torque Tester and Get Two Peak Values?

If you would like to program your torque tester and be able to get two distinctive peak torque values (thread break torque and Tamper Evident Band (TEB) break torque), the ST-120S or the ST-S3 torque testers can be programmed as follows:

  1. Associate a product name with the test recipe.
  2. Set the test mode to “Release”.
  3. Set the cycle count to 2. In the first cycle, the machine will measure the peak of the thread break. In the second cycle, the machine will measure the peak of the tamper-evident band (TEB) break.
  4. On the second “Test Setting” screen, set the “rotation speed” to 20rpm, the “release torque limit” to 20lbfin, the “starting torque” to 10%, the “torque ramp” to 30s, and the “method” to the rotation.
  5. Set the “rotation limit” to 250 degrees. Starting with a tight cap (applied torque >10lbfin), the thread break torque can be measured under 30 degrees. However, there is a single rotation limit setting, so the torque limit should be set reasonably close to the peak of the TEB break torque. After a few experimental cycles, the desired rotation limit is 200-250 degrees.
  6. To give the operator time for manually documenting the thread break (1st cycle), go in the Setup/Timers submenu and set the “New Cycle” delay to 5s.
  7. Alternatively, when a computer is capturing data from the machine the new cycle delay can be set to 00:00:50 (500ms).

Click here to view a step-by-step demonstration of this programming.

ST-FT1 Chuck Calibrator

Mesa Labs’ new ST-FT1 is a universal handheld torque/force display that, when coupled with the Chuck calibrator adapter, can be used to verify/calibrate chuck capper heads. Cap adapters are easily replaceable to accommodate various chucks.

Possible causes of equipment related torque variation:

  • servo current fluctuation
  • temperature variation related torque fluctuation of a magnetic slip chuck
  • varying chuck speed
  • varying friction between the chuck and the cap OD (slippage)
  • topload force variation

To verify chuck-capper operation, use Mesa’s ST-FT1 chuck calibrator. This is a compact torque testing device for both engineering (FAT of capping equipment, troubleshooting torque issues of existing capping equipment) and production use (individual capper chuck adjustment). With this device, you can prove whether the torque variation is the result of servo current fluctuation (inconsistent application torque), product variation or another variable in the capping process (gripping pressure, topload, etc).

Target applications include but not limited to:

  • OEM/Packaging Engineer testing the performance/repeatability of the torque applied by capper chucks during machine design, factory acceptance testing/validation.
  • Packaging line operator verifying and adjusting capper chucks
  • Packaging Engineer evaluating whether torque variation is caused by the capping equipment or the package.

Contact Life Scientific, Inc today to discover more info regarding this very capable torque tester.

Check out Mesa’s new website – features for improved navigation

Mesa is pleased to announce the launch of their newly redesigned website: mesalabs.com 

The goal of the new website is to provide better overall functionality and a more user-friendly experience. In addition, they’ve centralized most of the existing secondary websites (subdomains) over to mesalabs.com. This will give you more clear and direct access for navigating Mesa’s site better.

The launch of the new website includes the following new additions:

Products and services: Access these in the What We Do tab at the top menu bar or by using our search filter feature located at the upper left of each page. 

Technical resources and documents: Find these at the Documentation tab in the top menu bar. There is a new filtering feature, which allows for easier accessibility.

Documentation includes:

  • User Manuals and Instructions
  • Warranty and Services Information
  • Certification
  • Certificates of Analysis
  • Certificates of Conformity
  • Safety Data Sheets
  • Forms (Orders, Returning Goods, etc.)
  • and more…

In case you need to talk with Mesa, contact technical support or find a distributor, this is accessible at the top of the site from the menu bar under “Contact”. 

We’re confident the new site will enhance your experience with Mesa and be a valuable resource as it continues to evolve.

As always, if you need to contact our reps for any torque inquiries, do not hesitate to connect with us.

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