| abstract |
A process for preparing a flexible packaging material ( 6 ) by laminating at a temperature greater or equal to 50° C. a printed substrate coated with a primer ( 4 ) comprising poly(acrylic acid) and/or poly(methacrylic acid) with another substrate coated with a thermal active material ( 2 ), to prepare a high performance flexible packaging multilayer material ( 6 ) showing improved shelf-life, without requiring curing stage of intermediate layers. |