发明授权
US5112695A Vessel lid comprising laminated material 失效
包含层压材料的容器

Vessel lid comprising laminated material
摘要:
For the easily openable metal vessel lids openable by severing the scope with the aid of an opening piece, the formation of pinholes and/or cracks can be prevented, the corrosion resistance of the vessel lids as a whole (including the scored part) is improved, and the openability can be markedly improved by lessening the force required to open the vessel lids and, furthermore, feathering can be prevented by limiting the X-ray diffraction intensity ratio of the biaxially drawn polyester film provided onto at least the interior side of the vessel to within the range of from 4 to 17 and also by limiting the anisotropy index of in-plane crystal orientation to 30 or less.
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