Resource Efficient Innovations Database (REID)

Microlayer technology delivers light-weight stretch film

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Microlayer technology delivers light-weight stretch film
Microlayer layer film enables stretch film material savings
In Use – Commercially available, and applicable for stretch wrapping unit loads in the food, beverage, non-food grocery and home improvement sectors.

Benefits
Packaging Reduction, Storage and Transport efficiency

Product Categories
Drinks, Food, Home Improvement, Household & Personal Care

Relevant Materials
Plastic – Flexible

Relevant Packaging Formats
Shrink and stretch wrap

Supply Chain Phase
Packing

Details

A film manufacturer has developed a microlayer technology solution to design a stretch film with optimal properties for the beverage industry. The microlayer film offers increased pallet stability at elevated temperatures whilst using less material per pallet than the equivelent standard film. 
 
The new film utilises a 27-layer film structure. This is made possible by using advanced microlayer feedblock technology, used for over a decade to put dozens or hundreds of alternating layers into specialty films.  However, this manufacturer's feedblock differs from previous versions by forming an 11-layer packet, then slitting it in two and feeding one half to either side of the core, followed by intermediate and skin layers, instead of aligning the split packets side by side. The LLDPE core is about 40% of the whole film structure; intermediate layers are each about 10%; skin layers each 10%; and the two microlayer sections are each 10%. So each individual microlayer is about 1% of total film thickness. By the time a 70-gauge film is stretched 250%, those microlayers become only 0.057 microns thick. The 27-layer structure is made with one LLDPE resin in all the layers and achieves a tensile strength of 9000 psi compared to about 6000 psi for typical machine stretch wrap.
 
Apeldoorn Flexible Packaging of the Netherlands developed the Katan-Ex microlayer stretch film.
 
The content in this entry has been obtained from publicly available information sources only (e.g. press releases, website and trade press articles) and is subject to completion of a validation process with the technology supplier.

Potential Benefits

The microlayer film offers increased pallet stability at elevated temperatures whilst using 30 percent less material per pallet than the equivelent standard film. There will be a subsequent reduction in the carbon impact associated with materials production, and reduced packaging waste generation.
 

Intellectual Property

AEP Flexible Packaging BV of the Netherlands developed the Katan-Ex microlayer stretch film,

Consultant View

There are a number of new technologies reported in the REID database which aim to reduce pallet wrapping material requirements. Other examples can be found using the search terms "Palletisation", "Stretch wrap" and/or "Pallet wrap".
 
Readers interested in this subject should also consult the WRAP website for other resources, especially the 2012 study "Optimisation of pallet collation techniques and film usage"

Contacts and Further Information

Apeldoorn Flexible Packaging B.V.
Laan van Westenenk 11
7336 AZ Apeldoorn
The Netherlands
Postbus 66
7300 AB Apeldoorn
The Netherlands
Tel: +31 (0) 55 599 6600
Email:  info@afpholland.com
www.afpholland.com

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