Porosity of Knitted Fabrics in the Aspect of Air Permeability - Discussion of Selected Assumptions
Journal Title: Fibres and Textiles in Eastern Europe - Year 2017, Vol 25, Issue 3
Abstract
The main focus of this paper is to look into the relationship between the structure and air permeability of single jersey knitted fabric – especially verifying some basic assumptions. First, if it is possible to neglect the permeability of yarns themselves when we evaluate that of knits, and second, if yarn hairiness plays a significant role when we evaluate the relationship between air permeability and the porosity of knits. Theoretical calculations and experiments which were performed using an analysis of microscopic images of the structure of textile materials are used for the determination of inter-yarn and intra-yarn porosity. The paper aims to show t hat the characteristic dimension of inter-yarn pores is significantly higher than that of intra-yarn pores, and also that the values of inter-yarn porosity measured using image analysis methods with hairiness and after the removal of hairiness are statistically significantly different. The correlation coefficients for the porosity values measured and calculated are very high.
Authors and Affiliations
Marie Havlová, Jana Špánková
Keywords
Related Articles
- EP ID EP199539
- DOI 10.5604/01.3001.0010.1695
- Views 94
- Downloads 0
Wpływ systemu uprawy i odchwaszczania na plon i jakość włókna lnianego
Len włóknisty mimo wielostronnych walorów użytkowych jest aktualnie uprawiany w Polsce na niewielkiej powierzchni. Wynika to z małej opłacalności jego produkcji. Omawiana praca wskazuje na możliwość obniżenia kosztów pro...
Badanie przepływu ciepła wywołanego promieniowaniem przez aluminiowane wielowarstwowe tkaniny przy niskim poziomie termicznego promieniowania
Przedstawiono metodę pomiaru strumienia ciepła wywołanego promieniowaniem przechodzącym przez aluminiowane wielowarstwowe tkaniny ubrań ochronnych. Wyniki wykazały, że przy wzroście grubości tkaniny z włókna szklanego, t...
Design and Development of Denim Fabrics with Improved Strength and Impact Abrasion Resistance for Motorcyclist Clothing
This study aims to design and develop denim fabrics with enhanced mechanical and impact abrasion resistance performance using different materials, yarn types and fabric constructions. It was aimed to reach the standard i...
Proposal of Objective Assesment of the Phenomenon of Light Passage Through Blackout Fabrics
The paper presents some possibilities of measuring light passed through textile products applicable as sunshade window curtains. The existing measurement methods were analysed and a new method for measuring the barrier p...
Analysis of the Strength Parameters of Worsted and Component Spun Yarns after the Rewinding Process
The notion of yarn is understood as a continuous textile product of theoretically endless length and circle-like cross-section, made of staple or continuous fibres. A yarn leaves the spinning mill in a raw state and is u...