| 摘要 |
PURPOSE: Provided is a shock-absorbing packing material which is prepared by blow forming a synthetic resin in an air injection molding mold and closing an air injection inlet. CONSTITUTION: The shock-absorbing packing material is prepared by air injection molding. A synthetic resin is formed by air blowing and an air injection opening is closed to give shock-absorbing effect. Since the foamed bodies which are conventionally used have problems related to environmental pollution, air-inflating materials attract public attention. The air-inflating materials do not cause environmental pollution and reduce volume when they are deposited. Also, the air-inflating materials have a greater tensile strength than the foamed bodies.
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