| 摘要 |
A paper container includes a base disk and a peripheral wall having a ledge extending from a bottom edge of the peripheral wall to engage with a bottom face of the base disk, a side wall integrally formed adjacent to the ledge and having an inner surface to engage with a peripheral edge of the base disk, a knurl formed between the ledge and the side wall for engagement with a surface and a lip ring formed on a top edge of the peripheral wall such that an annular space is formed between the base disk and the peripheral wall.
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