Core/sheath type temperature-sensitive shape-transformable composite filaments
US6159598A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 23, 1999 |
| Grant date | Dec 12, 2000 |
| Priority date | — |
| Expiry date | Nov 23, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2924
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
In a core/sheath type temperature-sensitive shape-transformable composite filament comprising a thermoplastic resin (A) and a thermoplastic polymer (B) having a glass transition temperature within the range of from 0.degree. C. to 70.degree. C., the composite filament is constituted in proportions satisfying the following expressions (1), (2) and (3). In the core; EQU (A)/(B)=5/95 to 90/10 (% by weight) (1) In the sheath; EQU (A)/(B)=100/0 to 50/50 (% by weight) (2) EQU Core/sheath=10/90 to 95/5 (% by weight) (3) The filament is useful as doll hair the hair style of which is thermally shape-transformable to any desired shapes even by infants, and is easily fixable to the transformed shape by cooling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.