Means
Pilots
The MFC wet lamination pilot
Paper and board covered with microfibrillated cellulose for barrier packaging
- Develop paper and board laminated with MFC for the packaging and specialty papers sectors
- Assemble a paper/board with a film of microfibrillated cellulose, without using glue
- Improve the stiffness, surface state and barrier properties of papers and boards while maintaining their recyclability and biodegradability
- Produce reels for making demonstrators
The little story of the pilot
At first sight a failed laboratory experiment with an unexpected result, the concept of wet lamination was devised in 2014. Since then, the CTP’s teams have worked ceaselessly to validate the concept, file a patent, find funding, imagine and build a dedicated laboratory machine and then draw up the designs for a pilot. This latest addition, the only one of its kind and custom-built, arrived at the CTP in late 2019.The concept involves combining a layer of MFC with a paper/board, using a glueless method, in order to improve its properties. This is an original approach and a major asset in the search for completely recyclable and biodegradable cellulose packaging materials.
This pilot will be dedicated to validating the concept during continuous operation, producing sample reels, and designing a high-capacity pilot machine.
Description of the pilot
MFC wet lamination technology involves three stages:- Production of a wet film of MFC using a conventional papermaking filtration process
- Detachment of the film and replication on a dry paper/board substrate
- Drying using drying cylinders
Technical characteristics
- Speed: 3 to 10 m/min
- Supply tank: 1 m³
- Useful forming width: 305 mm
- Several wires available
- 3 independent vacuum areas
- Reel width: 305 to 360 mm
- Reel diameter: 50 cm maximum
- Replication calender
- 3 drying cylinders: 80 cm dia.
- Max surface temperature of drying cylinders: 180°C
- Secondary filter medium unwinder
- Maximum negative pressure: 400 mbar
- Paper grammage: 30 to 300 g/m²
- Maximum reel weight: 60 kg
- Maximum linear load: 15 kN/m
- 2 independent oil heating units
- MFC grammage: 10 to 50 g/m²
- Suspension flow rate: 6 l/min maximum
- Inclined plane former
Facility acquired in the frame of the MaLics platform with the support of the Auvergne-Rhône-Alpes regional council |
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