| abstract |
Recyclable or biodegradable extrudates based on waste paper comprise: (i) 10-60 wt.% waste paper fibres; (ii) 10-70% proteins and/or polysaccharides, esp. animal and/or plant proteins and/or starches or starch carriers and/or glucans and mannans; and/or (iii) 10-20 wt.% pref. plastifiable biotechnical residual material such as fermenter effluent, separation residues, brewers yeast, and extraction grist with a dry solids content of ca. 20 wt.%; (iv) 0-10 wt.% hydrophobic agents such as Na- or K water glass; (v) 0-10 wt.% mineral earths such as marl or air-slaked lime; (vi) 0-0.03 wt.% spore preparations of microorganisms with antagonistic activity; and (vii) 0-10 wt.% (in)organic fertilizers. |