| 摘要 |
<p>The process consists of applying a layer of boiling agent to the sheet, scattering the thermosetting material over this in powder form and heating to localised temps. above the film-forming temp. The bonding agent is applied as an aq. dispersion and the sheet material heated to above 90 deg.C The thermosetting resin powder has a particle size of 0.1-500 nm and is applied in localised amount of 30-100 g/sq.m.</p> |
