Apparatus for making paper and paperboard having enhanced gloss
US5328510A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 23, 1992 |
| Grant date | Jul 12, 1994 |
| Priority date | — |
| Expiry date | Oct 23, 2012 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H25/14
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for producing a paper product having a surface with enhanced gloss. The method includes the following steps: applying a continuous layer of an impressionable coating material to a paper product; contacting the layer of coating material with a polymer release film having a smooth and glossy surface substantially free of defects, the surface having non-adhering and release characteristics; and solidifying the coating material during contact with the release film. Using this technique, a smooth and glossy surface of the release film is substantially imparted to a surface of the layer of solidified coating material. In the case of clay-coated substrates, the coating is solidified by heating, whereas in the case of polyethylene-coated substrates, the coating is solidified by cooling. The end product is a coated substrate in which the coating has a glossy surface to which the texture of a film has been imparted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.