| 摘要 |
PURPOSE: A corrugated plastic cardboard box is provided to prevent the leakage of liquid chemicals including paraffin and latex stored inside the box by installing a waterproof member in between an inner corrugated plastic cardboard and an outer corrugated plastic cardboard. CONSTITUTION: A corrugated plastic cardboard box includes a waterproof member(180), and an overlapped portion(160). The waterproof member is inserted in between an inner corrugated plastic cardboard(120) and an outer corrugated plastic cardboard(140). The waterproof member is formed with a film in a polypropylene, polyethylene, or polyvinyl chloride material. The film is fused to the inner or outer corrugated plastic cardboard using ultrasonic waves or high frequency waves.
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