| 摘要 |
An improved paperboard has been bulk enhanced by retaining a substantial portion microspheres in a suitable distribution within the paperboard. As in one embodiment, the high retention of the bulk enhancing additives is believed to result from the incorporation of suitable retention aids. The paperboard is able to be formed into suitable paperboard containers without loss of integrity. The resulting containers have increased hold times when they contain hot or cold food or drink.
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