| 摘要 |
PURPOSE: A tube sealing apparatus for a foaming mold is provided to quickly and easily expand an expansion tube, and to prevent the expansion tube from shaking. CONSTITUTION: In a foaming mold including upper and lower molds(1,2), a groove(11) is formed at the edge of the lower mold, and is cut in a U-shape. The groove is disposed under the outer circumference of a skin layer(4). An expansion tube(12) is inserted into the groove, and sticks the skin layer fast to a core layer(3).
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