Peel Strength Rig – small

A/PS

Product overview

Peel lids and covers are one of the most popular packaging methods in applications like medical devices and FMCG products, particularly personal care and parts of the food industry. As well as measuring the characteristics of the lid’s material when it is in sheet form, equally important is investigating its adhesion to the pack. The performance of the seal between lid and pack is not only critical to the quality and safety of products, but is also a vital factor in user-friendliness. The adhesive bonds must be strong enough to withstand handling, shipping and storage without rupture or breakage, while being easy to peel back when necessary.

The Peel Strength Test Rig can carry out a popular test of this nature. Peel Strength Test Rigs are designed to enable an angled pull test to measure the peel strength of the sealed tops of product containers. Two sizes of rig are available. Using a A/PS Peel Strength Test Rig the container is positioned in a carrier plate mounted on to the base of the Texture Analyser so that a pulley and captive wire are located precisely below the Load Cell. One end of the wire is connected to the Load Cell and the other end is free to attach to the pull-tab on the container at an approximate constant angle. The container is held in an insert mounted on the carrier plate which provides an exact fit for the container. The force to peel off the sealed lid of the packaging container is measured.

Inserts of any shape are made to order for each container.

Typical graph

Graph showing measurement of the peel strength of a container lid using the Peel Strength Test Rig
Measurement of the peel strength of a container lid using the Peel Strength Test Rig

Technical information

Manufacturing material Aluminium/Delrin
Maximum operating temperature 100°C
Maximum applied load (compression) Not applicable
Maximum applied load (tension) 5kg

Ideal sample form

Containers that can be gripped in order to peel off their lids.

Benefits and limitations

  • Sample holders are made to order and are therefore specific to the support of each sample pot.
  • The A/PS rig will only accommodate pots up to 80mm diameter.

Optional extras

Extra Peel Strength Insert for A/PS – A/PSI
Non-circular inserts available to special order

Installation

Full installation instructions are provided within the Education Zone of the latest Exponent/Connect software version and on the technical information sheet accompanying this product.

Chemical compatibility

Stable Micro Systems probes and attachments are commonly made from four materials: anodised aluminium (AA6082 T6), stainless steel (316 T), Delrin (acetyl copolymer) and Perspex (polycarbonate).

In general use, probes and attachments made from these materials will be suitable for testing food products and inert non-food materials.

The four materials listed above are not universally resistant to all types of chemicals and as such the compatibility of the probe/attachment material with the product (to be tested) must be established to prevent damage to the probes and attachments. If the compatibility of the product with the probe is unknown to the customer then the chemical information about the product (Material Safety Data Sheet or Product Data Sheet) should be submitted to Stable Micro Systems. Stable Micro Systems will then assess the suitability of the probe/attachment material for use with the product and advise accordingly. If this advice is not sought then Stable Micro Systems will not accept liability for probes/attachments damaged by chemical attack from the product being tested.

Cleaning and maintenance

All probes and attachments may be cleaned in warm (or hand hot) water using a mild detergent. A soft brush may be used but abrasive cleaning aids should be avoided. Stable Micro Systems products should not be microwaved or cleaned in a dishwasher.

Screw threads should be lightly lubricated after drying using a light lubricant, e.g. petroleum jelly, mineral oil. This will aid the fitting and unscrewing of the item. Each component of a probe or attachment should be wrapped separately when stored, to avoid scratching or chipping. This will safeguard against any unnecessary damage to the accessory.