| 摘要 |
PROBLEM TO BE SOLVED: To provide a packaging which prevents the entry of oxygen at high temperatures, does not crack when being flexed, achieves adequate bond strength, and also has enhanced gas barrier properties.SOLUTION: A gas barrier laminate material includes a first film coated with a coating layer comprising a PVA and/or EVOH with clay dispersed therein and a second film on the coated side of the first film with an adhesive layer interposed therebetween, in which (A/B)(C/D)>200, A/B>75, C>1.0, D<1.5, wherein: A is the oxygen transmission rate for the laminate material at 23°C and 50% RH without the coating; B is the oxygen transmission rate for the laminate material with the coating; C is the bond strength in N/15 mm between the films after the adhesive has cured; D is the coating weight in g/m2 after being dried, in which the amount of polymer in the gas barrier coating composition is 50-95% of the total solids comprising polymer and clay. |
