| 摘要 |
PROBLEM TO BE SOLVED: To surely perform first-in first-out operation so as to advantageously mold a resin molded article with no defect on the product and excellent quality. SOLUTION: In this injection apparatus, a plunger 16 is arranged in a hollow part of a hollow cylindrical screw 14 arranged rotatably in a heating cylinder 12 and relatively movably to the heating cylinder 12 so as to pass it through relatively movably to the screw 14 in the axial direction. On the other hand, a storing chamber 50 the inner diameter of which is smaller than the diameter of a site where the screw 14 of the heating cylinder 12 is arranged is provided at the front part in the heating cylinder 12 in such a way that the apex part of the plunger 16 has a size which can run into while a gap 52 between it and the inner peripheral face of the storing chamber 50 is formed by relative movement to the screw 14. In addition, under a condition where the apex part of the plunger 16 runs into the storing chamber 50, a molten resin material is introduced into the storing chamber 50 through the gap 52 and it is stored there.
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