Home > Bestech Australia introduces two new test jigs for testing peel cling and puncture resistance of stretch wrap film

Bestech Australia introduces two new test jigs for testing peel cling and puncture resistance of stretch wrap film

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article image Peel Test Jig TG1167
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Bestech Australia  introduces two new test jigs for its LFPlus 1 kN single column materials testing machines from Lloyd Instruments for stretch wrap film testing applications.  

While the TG1075 is used for testing puncture resistance in stretch wrap film, the TG1167 peel test jigs are used for testing peel cling. The LFPlus can also perform a standard tensile test on stretch wrap film at very low force.

Stretch wrap film is an extremely important packaging material used in applications from heavy duty pallet strapping to sealing food items in containers to keep them fresh. Peel cling and puncture resistance are important parameters in stretch wrap operations.  

Cling is critical for maintaining a tight wrap after an item is stretch wrapped to prevent the film from unwrapping during handling and transportation.  

Puncture strength is important with regards to preventing accidental puncture damage and maintaining product freshness.

Puncture resistance testing

The TG1075 puncture resistance test jigs contain a 102mm aperture to support the stretch wrap film and a probe. The jig is locked onto the base of the LFPlus using the machine anchor pin.  

A removable upper plate allows the film to be mounted and clamped onto the jig. The probe is fitted to the bottom of the load cell.  

The puncture resistance test method imparts a biaxial stress to determine the resistance of film to the penetration of a probe at a single constant test speed of 250mm/min.

Peel cling measurement

The TG1167 jig is fitted to the LFPlus for peel cling measurements and a film strip is adhered to a flat film attached to an inclined surface on the peel jig. The machine measures the force required to remove the film strip from the flat film.

LFPlus material testing machines can also be used for tensile testing of stretch wrap film by equipping them with EX800Plus non-contacting extensometers.

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