Porous film, process for the production thereof and recording subject comprising the porous film
US6265059A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 17, 1998 |
| Grant date | Jul 24, 2001 |
| Priority date | — |
| Expiry date | Nov 17, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249986
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention provides a porous film obtained by coagulating polymer particles in an emulsion into the form of a film while maintaining their particle shape. The spaces between particles are left as pores, and as a result, the porous film has a plurality of thus-formed pores. By controlling the polymer particle diameter, the distribution of the particle diameter, and the solid concentration of the emulsion, the size of the pores of the film, the rate of pore area and the density of pores can be properly determined. The porous film is suitable for various applications including a recording subject for ink-jet printing, other recording subjects, films used in various industries, and the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.