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Intemational Paper Company
| Intemational Paper Company Patent applications | ||
| Patent application number | Title | Published |
|---|---|---|
| 20100252216 | LOW DENSITY PAPERBOARD ARTICLES - The invention provides a low density paperboard material and associated method for use in producing an insulated container, and is especially well-suited for making cups. The paperboard material comprises a paperboard web including wood fibers and expanded microspheres, and has a relatively low density ranging from about 6 to about 10 lb/3 MSF/mil (0.38 to about 0.64 g/cm | 10-07-2010 |