&bullunilever and nestle are part of a collaborative project that aims to improve the recyclability of &39flexible packaging&39 such as sweet and crisp wrappers.&bullto reach that target, project members must overcome a variety of problems unique to flexible packaging.&bullit represents a huge challenge to current recycling routes, because seemingly &39simple&39 packages, such as a biscuit wrapper, may incorporate several functional layers in order to deliver heatsealable packaging with high tear strength, good puncture resistance and minimum cost.&bullunilever and nestle will also lead by example in disseminating industrywide guidelines for recyclable packaging.