Method and device for coating substrate to provide it with antiadhesive properties, using a cross-linkable silicon composition
US6387452B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 2, 1999 |
| Grant date | May 14, 2002 |
| Priority date | — |
| Expiry date | Feb 2, 2019 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H27/001
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to an anti-adhesion treatment process by continuous coating of a strip of paper, this coating comprising a silicone composition based on polyorganosiloxanes (POSs) of FC/LTC type. According to this process, a POS A, a crosslinking agent B (hydrosilylation and/or dehydrogenopolycondensation), a catalyst C and, optionally, an inhibitor D, an adhesion modifier E and other compounds F are used. These constituents A to F are mixed continuously and in metered amounts, selecting mixing conditions such that the bath lifetime BLT is <10 h, such that the bath homogeneity is such that its DSC signature comprises a Gaussian peak (FIG. 2), and such that the flow rate of production of the homogeneous mixture A to F is such that the duration d separating the placing together of the components A, B and C and the time of application of the composition to the traveling support strip is less than or equal to the BLT. This process also includes Steps (2) for conveying the composition to the coating site, Step (3) for coating the strip of paper with the composition and Step (4) of thermal crosslinking.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.