Sheet containing heat transferable dye and selective blocking agent for heat transfer printing
US4619665A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 11, 1985 |
| Grant date | Oct 28, 1986 |
| Priority date | — |
| Expiry date | Mar 11, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24843
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Transfer sheets are provided which include a polyethylene imine as a blocking agent and which are useful in the heat transfer dye printing of various materials such as textiles. The polyethylene imine is capable of completely or partially blocking the transfer of sublimable dyes which have been imprinted on the transfer sheet while having no effect on other dyes which also have been imprinted on the transfer sheet. By using such transfer sheets, designs can be printed which are not otherwise obtainable by conventional techniques. The invention further concerns the method of making such sheets, their use in the printing of various materials, and the materials which have been so printed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.