Automatic Cap Torque Tester

A Bottle Cap Torque Tester is a specialized device used to measure the torque applied to bottle caps during sealing or opening processes. Its primary purpose is to ensure that bottle caps are properly tightened to prevent leakage or contamination of the contents within the bottle. Conversely, it can also be used to measure the torque required to open bottle caps, which is useful for assessing consumer usability and product quality.

Applications

Basic Applications：

Bottle Packages

Application and removal torque test of the bottle caps for bottled packages for food, pharmaceuticals, e.g. beverage or tablet bottles

Flexible Tube Packages

Application and removal torque test of flexible tube packages for food, pharmaceuticals and cosmetics, e.g. eye-drop, hand cream and shoe polish

Extended Applications：

Screws

Application and removal torque test of the screws

Vacuum Flasks and Vacuum Cups

Application and removal torque test of the caps of vacuum flasks and vacuum cups

Standards

ASTM D2063:Standard Test Method for Seal Strength of Flexible Barrier Materials

ASTM D3198:Standard Test Method for Blocking Load of Flexible Thermoplastic Films and Sheeting

ASTM D3474:Standard Specification for Pressure-Sensitive Tape for Packaging, Box Sealing

BB/T 0025:Biaxially Oriented Polypropylene Pearlescent Film

BB/T 0034:Biaxially Oriented Polypropylene Film for Packaging

GB/T 17876:Packaging Containers - Plastic Child-Resistant Caps and Closures

Technical Parameters

Items	Specifications
Load Cell Capacity	5 Nm (Standard) 20 Nm, 40Nm (Optional)
Accuracy	0.5% FS
Resolution	0.001 Nm
Twisting Speed	10 r/min (adjustable)
Clamp Force	Adjustable according to the sample
Body Clamp Range	Φ5 mm ~Φ190 mm (Diameter) Φ10 mm ~Φ120 mm (Diameter) (customizable)
Data Numbers	1 ~ 999 (No up limits on professional software,and multiple units available.)
Gas Pressure	0.4 MPa ~ 0.6 MPa (outside of supply scope)
Port Size	Ф6 mm PU Tubing
Power Supply	AC 100-240V 50/60Hz (can be changed to local requirement)
Instrument Dimension	350 mm (W) x 620 mm (D) x 770 mm (H)
Net Weight	48 kg

Features

Moveable 1.25″ (31 mm) length posts accommodate a wide range of sample shapes and sizes

Available extended post lengths and other gripping options

USB, RS-232. Mitutoyo, and analog outputs

Automatic output, data storage, and zeroing upon bottle cap removal helps automate testing processes

First / second peak detection for slip and breakaway torques in tamper evident closures

1.000-point data memory with statistics and outputs

Password protection prevents unauthorized changes

Programmable set point indicators and outputs for pass/ fail determination

High-speed 7.000 Hz sampling rate accurately captures peak torque values

Configurable audio alarms and key tones

5 selectable units of measurement

Lite data collection software included

Accessoriess

Standard configuration: Main unit, clamping rods (4), clamping blocks (1 pair), calibration components (excluding calibration weights), Φ4mm polyurethane tubing (2m)

Optional: Mini printer, professional software, air compressor, GMP computer system requirements, DataShield™ (Note 3)

Remarks: The air supply interface of this unit is a Φ4mm polyurethane tubing; the air supply is to be provided by the user.

Test Procedures

1. Equipment Preparation: Connect the power and air supply, turn on the machine, and preheat the equipment.

2. Sample Fitting: Adjust the clamps (bottle body clamp/cap clamp) to the corresponding range according to the bottle body and cap dimensions.

3. Sample Clamping: Fix the sample to be tested (bottle + cap) in the clamp and tighten it using the pneumatic device.

4. Parameter Setting: Select the corresponding torque range and set the test mode (tightening/opening torque).

5. Start Testing: Run the automatic testing program; the equipment completes torque detection and records the data.

6. Result Viewing: Export the test data and view the torque results through the statistical function.

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