Optimization process of natural-fibre nonwovens

Bc. Štěpán Hýsek

Diplomová práce

Abstract:

The presented diploma thesis deals with the processing of air-laid nonwovens using the natural fibres of hemp and flax. Firstly, a literary search dealing with natural fibres and nonwoven fabrication was obtained. Secondly, extensive investigations of natural-fibre nonwoven optimization were designed. SPIKE air-laying technology from the Formfiber Denmark ApS Company was used. The web-formation processes and the properties of the fibre-webs were evaluated. After needle-punching, the properties of the reinforced fibre-mats were evaluated. The investigations have clearly revealed that the settings of the air-laying machine affect web-formation process and nonwoven properties. On the grounds of monitoring of web-formation processes and evaluating of fibre-web or fibre-mat quality, several machine settings that can be used to enhance productivity of the machine, or settings that are suitable for fabricating nonwoven fabric with high density or great tensile properties were defined. Some results are negatively influenced by fluctuations of fabric basis weight, and in order to eliminate these fluctuations the nonwoven production line in the laboratory was modernized.

Keywords

air-laying, flax, hemp, natural-fibre, nonwoven

Jazyk práce: angličtina

Datum vytvoření / odevzdání či podání práce: 19. 4. 2016

Obhajoba závěrečné práce

• Vedoucí: doc. Ing. Martin Böhm, Ph.D.

Česká zemědělská univerzita v Praze

Fakulta lesnická a dřevařská

Magisterský studijní program / obor:
Dřevařské inženýrství / Dřevařské inženýrství