Acetate tow having high crimp modulus and manufacturing method thereof
US5225277A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 16, 1990 |
| Grant date | Jul 6, 1993 |
| Priority date | — |
| Expiry date | Nov 16, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2922
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An acetate tow having crimp modulus, wherein a degree of crimping of the acetate tow at a position just downstream of a delivery roller of a filter rod making machine used to form a filter rod is 1.4 or more. When the acetate tow is bloomed in the filter rod making machine, a tendency which the acetate tow is caught on a feed roller becomes very low, and when the filter rod is formed of the acetate tow, a filter rod having a high pressure drop can be obtained. The present invention further includes a method of manufacturing the acetate tow, in which a specified acetone content is maintained in the acetate tow and a specified temperature, determined on the basis of the acetone content, is used in a process of crimping the acetate tow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.