Cap Torque Test Systems — Cap Inspector

Cap Inspector - Torque Testing of Bottle Caps and Threaded Closures

Cap Inspector

Cap torque testing has been an integral part of the packaging industry's quality control program for years. Cap torque testing helps prevent consumer complaints from difficult-to-open products, product leakage or spoilage from loose caps during transportation. Many packaging facilities use small, manual desktop models that are inconsistent and non-repeatable due to outside variables. A manual tester's accuracy is affected by the operator's physical size and strength as these factors can deform a cap and apply variable torque (variable acceleration), leading to an inaccurate result. Even something as simple as wet hands can cause slippage and affect the accuracy of manual cap testers. The cap inspector series serves the beverage, dairy, pharmaceutical, personal care, cosmetic, consumer product, automotive and chemical industries.

As the industry leader in precision motion test equipment market, Vibrac continues to develop advanced solutions to industrial testing problems. Over 50 years of experience in the field of torque measurement is reflected in every Vibrac system. The new Model 2100 Cap Inspector is born from a long line of market leading cap test systems. The Cap Inspector offers a range of improvements over the traditional Vibrac systems used and appreciated all over the world. Improvements include:

  • New Windows 7® SmartScreen operator interface.
  • New front panel with Date and Time display.
  • Screen tilt adjustment for easy viewing in poorly lit conditions.
  • Low profile and smaller footprint design.
  • USB and Ethernet connectivity.
  • Simplified programming and profile management.
  • New options for viewing, managing and exporting data.
  • New password security options.

Programmable Tests for All Types of Caps

With the simple touch of a button on the smart screen, the converted cap inspector can perform 6 different tests.

Bridge Torque - This test determines the rotational force needed to remove a cap and to break the bridges that join the cap to a tamper-evident band on plastic and aluminum caps.

Incremental Torque - This test is used to measure the removal torque of a cap and then reapply the cap to a specific position beyond the original starting position. This test is designed to be a non-destructive test, and prevent leaking problems by reapplying the cap to a secure position.

Removal Torque - A non-destructive test, this is used to determine the peak removal torque of a cap. The removal torque is measured and displayed, and then reapplied to a specific value.

Reverse Ratchet Torque - This test measures the torque required to rotate a child-resistant type cap without engaging the child resistant mechanism (i.e., no vertical down force).

ROPP - This procedure is for testing Roll-On Pilfer Proof type caps. This test method measures the torque required to break the tamper-evident band bridges, and strip threads on ROPP caps.

Strip Torque Test - This test is designed to measure the torque required to strip the threads on any type of cap (torque limits may apply).

Non-Destructive Testing

Vibrac's cap torque test system, the Cap Inspector, may be easily programmed to apply torque in the opening direction until the breakaway or peak removal value is reached. It then stops and reapplies the cap to a setable torque level, thus leaving the seal and product uncompromised.

[Photo of the Cap Inspector]

User-Friendly Testing

[Profile Library Screenshot]

Profile Library

[Start Test Screenshot]

Start Test Screen

[End TestScreenshot]

End of Test Screen


Creating a Test Profile

[Main Menu Screenshot]

Main Menu

[Test Profile Manager Screenshot]

Test Profile Manager

[Select Test Type Screenshot]

Select Test Type


System Options

[Systems Options 1 Screenshot]

Systems Option 1

[Systems Options 2 Screenshot]

Systems Option 2

[Test Setup Screenshot]

Gold Standard Verification


Calibration and Verification

[Calibration Standard Bottle Screenshot]

Calibration Standard Bottle

[User Verification Screenshot]

User Verification

[Verification Results Screenshot]

Verification Results


System Description

Operating Environment:

  • Temperature Range: 41°F to 104°F (5°C to 40°C)
  • Humidity Range: Up to 90% non-condensing

Physical Characteristics:

  • Dimensions: 21 in W x 18-1/2 in D x 30-1/2 in H (53 x 47 x 77 cm)
  • Weight: 75 lbs (34 kg)

Power Requirements:

  • Input Power: 120 VAC 60 Hz (220 VAC 50 Hz)

Drive Specifications:

  • Speed Range: 1 to 5 RPM
  • Direction: Bi-Directional

Measurement Specifications Chart