a flexible laminated packaging material comprises a plurality of layers , at least two of which are bonded together by a layer of adhesive . a first layer comprises a continuous metallic foil and a second layer comprises a continuous web of material incorporating or coated with a laser retardant additive . the material may be scored or cut with a laser so as to produce offset scores or cuts wherein a first cut is made through the first layer , but not past the second layer and a second cut is made through the second layer , but not past the first layer . the laser retardant additive attenuates the power of the laser to help control the depth of the cuts . a method of producing the material by laminating the first and second layers using an adhesive is also disclosed . the method may comprise applying a laser beam to the first web so as to score or cut the first web , but not the second web ; and applying a laser beam to the second web so as to score of cut the second web , but not the first web .