Environmentally friendly straw and manufacturing method thereof
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United States of America Patent
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Dec 26, 2023
Grant Date -
Jul 1, 2021
app pub date -
Dec 27, 2019
filing date -
Dec 27, 2019
priority date (Note) -
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status (Latency Note)
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Abstract
The invention teaches an environmentally friendly straw and its manufacturing method. The straw includes a tubular body having a through channel inside connecting two openings respectively at two ends of the tubular body, an outer layer surrounding the tubular body between the two openings formed by a leveling machine, an inner layer, as an inner wall of the tubular body, surrounding the channel formed by a honing machine. The straw is manufactured by leveling the tubular body, and honing the channel by a honing machine. As such, a smooth layer between the channel and the tubular body is achieved so that the straw is convenient to clean and use.
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