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Going Beyond the Specifications

At first glance, most stretch films look similar. Characteristics such as the film gauge, roll length, roll weight and price are often the first comparative measures of stretch film. However, it is the hidden properties of the film, for example the tensile strength, puncture and impact resistance, tack, and clarity that will ultimately determine the effectiveness of the product in maintaining the integrity of your load through the supply chain.

The varying properties of individual films mean they will each ‘behave’ differently, and these properties cannot be determined by looking at a roll or comparing the gauge, roll length or price/kg.

Chemistry      +       Physics      =      Film

The components or ingredients of the film

Advancements in resin technology have created next-generation chemical structures which, when included in stretch film, provide higher holding force, puncture resistance and tear-propagation. High performance films can be tailored to include particular properties to suit the load type and supply chain.

How the film is extruded

Cast Stretch film are extruded in multiple layers with 3-layer, 5 layer and 7-layer films having been fairly standard for the last 15 years.The latest extrusion equipment can create up 33-layer films. These “nano-layer” film structures have a ply-wood effect which significantly improves the tensile strength.The 33-layer manufacturing process also allows for more complex ‘blends’ of the advanced resins to further enhance the properties of the film.

Matching film properties to the load

The load, the wrapping method and the environment all help determine the film properties that will best suit your situation. For example, a pallet of bricks will require different properties to a pallet of toilet rolls or a pallet of mixed goods with a non-cubed configuration.

Wrapping method

Load profile

Product stability

Value of the load

Distance to travel

Modes of transport

Speed of wrapping

Number of pallets per day

If the aim is to get your goods to their destination in the same condition they left your site, a rigorous testing and trialling process is the most effective method to determine the optimal film, and strike the ideal balance between total cost and effective load containment.

The hidden costs of poor load containment

Is your stretch film doing it's job? A recent study found 4% of all transported goods are damaged on arrival. When choosing a pellet wrap, it is important to be aware of what lies beneath the surface.

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Get more from your stretch wrap machinery

Whether you are wrapping delicate paper products or weighty bricks, an effective and efficient wrapping process plays a fundamental role in minimising waste and keeping costs low.

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How will you know it works

Getting your goods to your destination intact starts with the right choice of film, but with stronger, thinner and 'stretch-ier' films than ever before, how do you pick the right one for you?

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