| 发明名称 |
Dental floss having low density and method of making same |
| 摘要 |
A dental floss comprising a porous PTFE fiber having a density of less than about 0.7 g/cc. The inventive floss is abrasion resistant, grippable and has a soft feel to the hands and a rough feel in the mouth. The floss is made by an extrusion process with non-contact heating during subsequent expansion with amorphous locking.
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| 申请公布号 |
US6539951(B2) |
申请公布日期 |
2003.04.01 |
| 申请号 |
US19990449078 |
申请日期 |
1999.11.24 |
| 申请人 |
GORE ENTERPRISE HOLDINGS, INC. |
发明人 |
BAILLIE RICHARD L.;CHASTAIN JAMES H.;DOLAN JOHN W.;WILEY WILLIAM HAMMOND |
| 分类号 |
A61C15/04;D01F6/12;(IPC1-7):A61C15/00 |
主分类号 |
A61C15/04 |
| 代理机构 |
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