Case Study

Packaging weight reduction for Sainsburys

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One of the most powerful arguments for converting from glass to PET is the reduction in pack weight that can be achieved.

Issues with packaging weight

The weight of the packaging used for food products significantly increases energy requirements in production, transport and handling, and hence carbon emissions. This is reflected in the cost of Packaging Recovery Notes (PRNs) applied to both the filler and the retailer of food packs.

One of the most powerful arguments for converting from glass to PET is the reduction in pack weight that can be achieved.

Our Solution

New PET jars designed by Esterform Packaging for Sainsbury peanut butter packs, achieved an overall weight reduction of 83% in comparison with the original glass jars. This supported Sainsbury’s target to cut their total packaging weight by one third by 2015. The jar designs in 364ml and 710ml formats reflect the original brand image for the product – but with the utility of the PET material.

Overall
  • On a typical annual usage of 4 million jars, the savings in the cost of PRNs could equate to over £2,000 for the filler and £3,000 for the retailer due to the dramatic reduction in weight.
  • The weight reduction also reduces fuel use in transit and in material handling. Moreover, breakages (with the consequent risk of contamination as well as other safety issues) that are common with glass do not occur with PET.
  • The jar designs in PET can preserve the original brand image for the products – but with all the practical advantages of PET. Stylish packs achieve the right impact on the shelf, whilst working effectively at every point in the supply chain.

 
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