摘要：

A process for producing by simultaneous lamination a polymer/metal/polymer laminate, which process comprises (i) simultaneously laminating to each of the major surfaces of a metal sheet a composite polyester film (A) comprising an inner layer (A1) of a substantially non-crystalline linear polyester having a softening point (Ts-A1) below 200° C. and a melting point (Tm-A1) above 150° C. and below 250° C. and an outer layer (A2) of a biaxially oriented linear polyester having a crystallinity greater than 30% and having a melting point (Tm-A2) above 250° C., the metal sheet having been heated to a temperature T 1 above the softening point (Ts-A1), preferably above the melting point (Tm-A1), of the polyester of inner layer (A1) thereby to cause softening, preferably melting, of the inner layers (A1) and adhesion thereof to the metal sheet, but below the temperature (Tm-A2) at which the outer surface of the outer layer (A2) will melt when in contact with the metal strip at temperature T 1 , and (ii) re-heating the resultant laminate to a temperature T 2 sufficient to cause the polymer films (A1) to interact with and become bound to the respective surface of the metal sheet, but such that the outer surface of the outer layer (A2) remains below temperature (Tm-A2). The laminates formed in accordance with the present invention are useful for forming into containers or various components thereof.

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