| 摘要 |
PURPOSE: A corrugated tube capable of easily discharging contents is provided to enable users to push the contents inside the tube by folding wrinkles formed on the tube. CONSTITUTION: A corrugated tube is manufactured with a polypropylene material, and has the width of 15cm and the length of 25cm. The corrugated tube includes an entrance(1) for discharging contents from the tube, and a center unit(2) including wrinkles for users to fold and push the content toward the entrance.
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