LAMINATED METAL PLATE FOR DRAWN CAN AND DRAWN CAN PREPARED THEREFROM

摘要

Disclosed is a laminated metal plate for a drawn can, which comprises a laminate comprising a base metal, a layer of a film of a polyester composed mainly of ethylene terephthalate units and, if desried, an adhesive primer layer interposed between the base metal and the polyester film layer, wherein the X-ray diffraction intensity ratio, defined by the following formula (I), of the polyester film layer is in the range of from 0.5 to 15: RX=IA/IB (I) wherein RX represents the X-ray diffraction intensity ratio, IA represents the X-ray diffraction intensity by the diffraction plane parallel to the surface of the polyester film, which has a spacing of about 0.34 nm (CuK alpha X-ray diffraction angle is 24 DEG to 28 DEG ), and IB represents the X-ray diffraction intensity by the diffraction plane parallel to the polyester film surface, which has a spacing of about 0.39 nm (CuK alpha X-ray diffraction angle is 21.5 DEG to 24 DEG ). and the in-plane anisotropy index of the crystal of the film layer is less than 30. When this laminated metal plate is subjected to the drawing, cracking or formation of pinholes is prevented, and the laminated metal plate shows excellent formability and corrosion resistance. An excellent drawn can is prepared from this laminated metal plate.