Following a WRAP (Waste & Resources Action Programme) funded project trialing a new way to seal flexible film bags and pouches, the product is being rolled out across the Marks & Spencer (M&S) salad category.
M&S is the first retailer to adopt the technology, Integrity Seal, which uses a new method of sealing the top and bottom of bags to use less material, produce a stronger seal and give a cleaner appearance.
It is thought that the innovative film can save at least 10 per cent of the packaging material used on those products and following the trials, M&S has given the go-ahead to implement the technology across all salad bags. The packs are expected to be in store by the end of the summer.
The trials were funded by WRAP in partnership with International Food Partners (IFP), which developed the technology in conjunction with Ceetak Ltd - a UK company specialising in flexible film sealing systems. IFP worked with Tilmanstone Salads - a salad supplier, and M&S. Integrity Seal uses heat to melt the film to make a welded seal on the ends just 1mm wide rather than using the traditional method of crimping, which results in a much wider seal.
Trials have shown that Integrity Seal produces a better seal compared to crimping, and therefore has the potential to improve shelf-life - for example, increasing the life of certain types of salad from five to eight days, said WRAP. Pack appearance was also well received by consumers in consumer research, who particularly felt that the new seal looked neater than traditional crimped bags, it added.
WRAP project manager Andrew Parry said: “This new technology could be applied across a wide range of product packs, from salad and snack bags to cosmetics and DIY products. It reduces the amount of material used for each bag, can keep products fresher for longer, and so has the potential to divert a substantial amount of packaging material and food waste from landfill sites.”
Helene Roberts, head of packaging at M&S, added: “[Integrity Seal technology] enables us to reduce the amount of packaging we use, which helps us to lessen our impact on the environment as well as save on packaging costs. It also benefits our customers as our salad packaging not only looks better but it helps the product stay fresher for a longer period.”
WRAP is now producing a full technical report and case study on the trials to show how the technology can be easily applied in a range of businesses. Brand owners and retailers who want to find out more about the trials can contact WRAP’s Retail Innovation team at retail@wrap.org.uk.
