ISBT sports closure bite and tension tests

  • Mecmesin

The International Society of Beverage Technologists (ISBT) publish voluntary codes of practice for the technical and scientific aspects of soft drinks and beverages. Their packaging guidelines include Sports Closures: Voluntary Standard Performance Specifications and Test Methods; indicating test procedures for the unique push/pull or twist-to-open spout closure design used on mineral water and sports drinks caps.

Two tests apply tensile loads to evaluate the quality and integrity of the closure: Section 2.1 - Bite Test and Section 2.3 - Tension Test. The purpose of the tension test is to measure the strength of the spout and base assembly, which could become a potential choking hazard were it to break too easily. This is a destructive test, in which a constant force of 111 N is applied to the spout for 10 seconds and, if there is no separation of the assembly, further loading is applied until breakage and the peak recorded. The bite test similarly applies a particular force (270 N) for 10 seconds and records whether any damage or breakage occurs.

Mecmesin supplied a motorised MultiTest 2.5-i test stand, capable of applying load at the required constant speed of 300 mm/minute and stop travel at the threshold force value, as indicated in the ISBT test standard. Mecmesin offer a fixture which is able to grip the neck of the container, via a lever-operated collar, and a multi-jaw grip which grasps the lip of the spout, or similar feature of any drinks closure. EmperorTM software controls the test stand and generates graphical output of the results and a test report clearly indicating pass/fail status, enabling failures to be detected and the ultimate strength in tension to be recorded for batches of closures.
Mecmesin test equipment is also able to perform similar sports closure performance tests, e.g. measuring the tamper-evident bridge strength on the protective flip-cap.

- MultiTest 2.5-i computer-controlled test stand.
- 250 N ILC intelligent loadcell.
- EmperorTM Force testing software.
- Sports Cap Pull-off Fixture with Multi-Jaw Grip (bite clamp).

See also

Cosmetic packaging pull-off test

A bench-top testing system was required to repeatably test the pull-off force on a variety of cosmetic containers. The system needed to allow a relatively high volume of containers to be tested with the minimum level of training required for users. Mecmesin's solution avoided the risk of damaging the loadcell by excessive torque on tightening the collet grip, and the lipstick barrel was first inserted in the grip and then connected to the gauge by a flexible chain-link.

Food packaging made from thermoformed plastics and intended for freezing, requires testing to ensure optimum functionality when closing and sealing the container. The closing effort of the lid is measured by using a motorised force tester controlled by software together with a custom-designed fixture to hold standard-sized ice cream tubs. In addition the ‘top-load’ crush strength of the container itself can also be tested on the same machine to guarantee it is rigid enough to avoid buckling and spillage when the lid is applied.

Mecmesin develops Combi Cork-i Extraction Tester for leading Scottish whisky

To improve the quality and storage of a premium product, the R&D team at a leading Scottish whisky maker needed to optimise the design of their bottle stoppers. They decided that the strength and performance of their reusable stoppers could be ensured by systematic testing of the characteristics of both portions of the stoppers. Working closely with the R&D team, Mecmesin developed the Combi Cork-i Extraction Tester, an innovative multi-function cork extraction testing system that tests both phases of de-corking synchronously.

Greek beauty product manufacturer guarantees production quality by updating to Mecmesin's digital torque testers

A manufacturer of a wide range of skin, hair-care, make-up and sun-care products based in Greece needed to replace their outdated torque testers with up-to-date digital torque testers to guarantee production quality and to ensure their products remained sealed. Mecmesin supplied the company with two Tornado 10N.m digital torque testers, which have the ability to test tamper-evident closures, an intrinsic part of their specification.

  • Mike Webber
  • Product Info
  • English
  • Created 08 May 2018
  • Modified 29 Aug 2019
  • Hits 1168