a recyclable multilayer ethylene polymer sheet structure for constructing a package to hold bulk products such as dry pet food having an odoriferous component , the sheet having , from the inner surface contacting the product , to the outer non - product contacting surface the structure : lldpe / hdpe / lldpe / br / ldpe where lldpe is a linear low density polyethylene , hdpe is a high density polyethylene and br is an odor barrier resin such as ethylene vinyl alcohol copolymer having odor barrier properties and ldpe is low density polyethylene .