| 摘要 |
PROBLEM TO BE SOLVED: To provide a developer container having excellent sealability. SOLUTION: In the developer container Y which houses a developer by sealing the opening, the main component of the sealant of the sealing member is a low mol.wt. polyolefin polymer synthesized by using a metallocene catalyst. Further, a material compatible with the dispersed material dispersed in the sealant layer of the sealing member X is dispersed in at least the sealed part S of the container. Thereby, by the heat and pressure added during heat sealing, both materials are dissolved in each other on the sealing interface to produce bonding force. The bonding force is added to the adhesion strength between the sealant layer and the sealed face of the container. Thus, good sealing property is produced without decreasing easy peeling property. |
