| 摘要 |
A packaging suitable for use in or on a heating appliance, comprising a bag in which, in use, is sealed an article for heating. The bag has an aperture formed therein over which is sealed a film of material which forms a window in the bag, wherein the seal between said film and the material of the bag is sensitive to temperature and/or pressure such that the window at least partially detaches automatically from the bag upon the temperature and/or pressure within the bag reaching a predefined level so as to vent the atmosphere within the bag. The bag may be formed of an aluminium foil material, with the film being of transparent polyester or polyester polyethylene. |
