| 摘要 |
<p>A deformable molded fiber product is formed by a method of felting, pressing and drying the compressed product (37) having a uniformly spaced series of low density ridges (40) on one surface. These ridges provide the molded fiber product with sufficient flexibility so that it may be subjected to a hot swaging-like process to change its dimensions. A method of forming detents by hot pressing is also shown. The process is particularly useful in forming combustible nitrocellulose shell casings from a single pulp molding operation.</p> |
