| 摘要 |
PROBLEM TO BE SOLVED: To provide a manufacturing method of a cell culture vessel which is capable of mass-producing the cell culture vessel in which the vessel is prevented from being torn with a portion, on which stress is concentrated when the vessel is stretched, working as a starting point.SOLUTION: In a cell culture vessel 1, thick wall parts 3 are provided for both sides of the vessel sandwiching a thin wall part 2, and the vessel has a stretchable structure in directions perpendicular to outer surfaces 4 of the thick wall parts 3. Positions of gates 5 are disposed offset for a central part in stretching directions, on which stress is concentrated, when the cell culture vessel 1 stretches, and two gates 5 are provided symmetrically with respect to the central part. By performing injection molding while the positions of the gates 5 are disposed offset from the central part, a gate mark does not exist at the central part on which stress is concentrated when the vessel stretches, and the vessel will not be torn with the gate mark working as a starting point. |
