| 摘要 |
<p>PROBLEM TO BE SOLVED: To eliminate the oozing of moisture or an oil content to the external side of a container and prevent the container from being deformed by heating the container in a microwave oven, by forming the container with a laminate wherein a cardboard, a bonding layer and a biaxially oriented polyethylene-2,6- naphthalate film are laminated on one another in order named. SOLUTION: For a laminated container which is used as a container for take-home foodstuffs such as chaotzus, shao-mais, etc., and which is heatable in an electronic range or in a microwave oven, a laminate is used, wherein a cardboard 5, a bonding layer 6 and a biaxially oriented polyethylene-2,6- naphthalate film 7 are laminated on one another in order named. The biaxially oriented polyethylene-2,6-naphthalate film 7 is formed on an inner face side of the container. As this biaxially oriented polyethylene-2,6-naphthalate film 7, the one is used, which has a planar orientation degree of 0.10-0.30 as determined by the formular of ns=(nx+ny)/2-nz, wherein (ns) represents a planar orientation degree, (nx) represents a refractive index in a lateral direction, (ny) represents a refractive index in a longitudinal direction and (nz) represents a refractive index in the direction of thickness.</p> |
