基本信息:
- 专利标题： METHOD OF THERMOFORMING MULTILAYER POLYMER FILM AND ARTICLES
- 申请号：PCT/IB2021/059900 申请日：2021-10-26
- 公开(公告)号：WO2022090940A1 公开(公告)日：2022-05-05
- 发明人： SCHULTZ, Anthony F. , YU, Ta-Hua , FANSLER, Duane D. , GEISLER, Karl J.L. , BROYLES, Bruce R. , VELAMAKANNI, Bhaskar V. , METZLER, Thomas J. , JANOSKI, Jonathan E. , POKORNY, Richard J. , GIBSON, Mark T. , ABUELYAMAN, Ahmed S.
- 申请人： 3M INNOVATIVE PROPERTIES COMPANY
- 申请人地址： 3M Center
- 专利权人： 3M INNOVATIVE PROPERTIES COMPANY
- 当前专利权人： 3M INNOVATIVE PROPERTIES COMPANY
- 当前专利权人地址： 3M Center
- 代理机构： FISCHER, Carolyn A. et al.
- 优先权： US63/107,092 2020-10-29
- 主分类号： B32B1/00
- IPC分类号： B32B1/00 ; B32B3/02 ; B32B7/12 ; B32B27/08 ; B32B27/30 ; B32B27/32 ; B32B27/34 ; B32B27/36 ; B32B7/022 ; A61C7/08 ; B29C51/14
摘要：
A method of thermoforming is described. The method comprises providing a multilayer polymer film comprising at least one first thermoplastic polymer layer having a glass transition temperature (Tg) greater than 60°C and at least one second polymer layer; and thermoforming the multilayer polymer film into a three-dimensional shape. The second polymer layer can be characterized by one or more properties selected from i) a Tg ranging from 20 to 70°C; ii) a molecular weight between crosslinks of no greater than 20,000 g/mole; and iii) sufficient crosslinking such that the second polymer layer lacks a thermal melt or softening transition at a temperature up to the decomposition temperature of the second polymer layer. Also described are multilayer films and articles, such as orthodontic aligner and retainer trays.
IPC结构图谱:
| B | 作业；运输 |
| --B32 | 层状产品 |
| ----B32B | 层状产品，即由扁平的或非扁平的薄层，例如泡沫状的、蜂窝状的薄层构成的产品 |
| ------B32B1/00 | 实质上具有非平面的一般形状的层状产品 |