| 摘要 |
<p>The present invention relates to a security sheet which is resistant to crumpling and hard creasing, including at least fibres, polymer aggregates having a glass-transition temperature greater than 23°C, and an effective amount of a cationic flocculating agent, referred to as the main agent. The invention also relates to the method for producing said security sheet and to a security document comprising said security sheet.</p> |
