Packaging method and article therefore
A method of forming an insulated packaging article for subsequent use comprises compressing an insulating layer 5, sealing it in an air-tight outer layer 3, and transporting or storing the compressed article for subsequent use, whereby the outer layer can be punctured in order to cause the insulating layer 5 to provide insulating properties by expanding through ingress of air. The article may be mechanically compressed to compress the insulation layer and then sealed (fig. 2a-2m), or may be vacuum sealed (not shown). The article may comprises a pouch or pocket member having exterior and interior faces (fig. 1c), with an exterior face being punctured to allow ingress of air. Alternatively the article may comprise an insulated panel or liner for use in a container (fig. 3a-3c). The insulating layer is preferably removable from the outer layer for insertion into another, non-punctured outer layer for re-use. An insulated packaging article which is provided in compressed and sealed form within an outer layer which is subsequently punctured to cause expansion of the insulation layer through ingress of air is also claimed. The insulating layer is preferably wool. Compressing the articles is intended to make them easier to transport before use.