The initial weighing of the pre-cut parts took
place in consideration of the density of the tested fibres in
relation to the volume of the fabricated boards. Cotton/PLA
boards with and without lignin were produced. For the
boards with lignin content, 5 g powdery lignin was filled
equal into the webs by a sieve.
The dimensions of the boards are 323 9 223 9 2 mm.
As a spacer an aluminium frame with external dimensions
of 343 mm 9 243 mm was used. For easier removal of the
composite panel from the mould, the frame was treated
with a parting compound from the company Marbocote
Ltd. (Cheshire, UK). Prior compression moulding, the
multilayer webs were dried for 3 h at 105 C in a forcedair-
oven (Memmert, Germany). After drying, the multilayer
web was centred on the bottom pressure plate in the
aluminium frame. Compression moulding was done with a
hydraulic press type KV 214.01 (Rucks Maschinenbau
GmbH, Glauchau, Germany) capable of applying pressure
and controlled heating to both upper and lower plates. The
press has a nominal pressure force of 1,000 kN, a maximum
temperature of 330 C and a pressure table of
The initial weighing of the pre-cut parts tookplace in consideration of the density of the tested fibres inrelation to the volume of the fabricated boards. Cotton/PLAboards with and without lignin were produced. For theboards with lignin content, 5 g powdery lignin was filledequal into the webs by a sieve.The dimensions of the boards are 323 9 223 9 2 mm.As a spacer an aluminium frame with external dimensionsof 343 mm 9 243 mm was used. For easier removal of thecomposite panel from the mould, the frame was treatedwith a parting compound from the company MarbocoteLtd. (Cheshire, UK). Prior compression moulding, themultilayer webs were dried for 3 h at 105 C in a forcedair-oven (Memmert, Germany). After drying, the multilayerweb was centred on the bottom pressure plate in thealuminium frame. Compression moulding was done with ahydraulic press type KV 214.01 (Rucks MaschinenbauGmbH, Glauchau, Germany) capable of applying pressureand controlled heating to both upper and lower plates. Thepress has a nominal pressure force of 1,000 kN, a maximumtemperature of 330 C and a pressure table of
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