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1

Influence of Technology Process on Responsiveness of Footwear Nonwovens

Šajn Gorjanc Dunja, Bras Ana, Novak Boštjan

Autex Research Journal

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2020

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Vol. 20, no. 4

539--551

EN

Nonwovens represent a part of technical textiles that are used for clothing (“cloth tech”). Nonwovens are also used in the footwear industry mainly for functional purposes, where the aesthetic properties are not of great importance. They are mainly used for support and reinforcement of footwear. All three groups of textiles are used for footwear, i.e. woven fabrics, knitted fabrics and nonwovens that are produced directly from fibres, yarns or threads mainly from chemical fibres and in a small proportion from natural fibres. Footwear textiles need to have good mechanical properties (at compressive loading), abrasion resistance, permeability properties and heat resistance. These properties are in close connection with the nonwoven structure or composite materials. The basic intention of the presented research was to analyse the influence of the technology process on nonwovens for footwear responsiveness. Analysed footwear nonwovens in the presented research were on one side coated but on the other side consisted of a two-layer laminate. For this purpose, two different technological processes were used (coating and lamination). The results of the presented research showed that laminated samples express higher elastic recovery at compressive loading than coated samples. The treatment does not have an important influence on elastic recovery at compressive loading. Laminated samples express higher water permeability and lower absorption of water than coated samples, even after 24 hours of treatment in distilled water and compressive loading. The treatment of specimens in distilled water for 24 hours and compressive load of 789.6 N does not have an important influence on elastic recovery at compressive loading, water vapour permeability, air permeability and absorption of analysed samples. Air permeability could not be measured on coated samples.

2

Development of Coating for Incorporation of Beneficial Spores on Hospital Textiles

Dural-Erem A., Nierstrasz V.

Fibres & Textiles in Eastern Europe

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2018

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Vol. 26, no. 5 (131)

59--62

EN

Hospital-acquired infections are a growing problem in hospitalized patient safety. and hospital textiles are reported as a significant source of these nosocomial pathogen. Contact with these textiles leads most often to the contamination and cross-contamination of the hospitalized patient and hospital staff. However, the common antimicrobial agents used in the production of antimicrobial textiles are proving to be a concern in terms of toxicity and antimicrobial resistance. Bacillus spores can be a good solution to combat pathogenic bacteria. In the present study, Bacillus spores were used in the coating of polyester fabrics. Afterwards the growth and viability of the beneficial bacteria applied on fabrics were monitored using the agar plate method. Besides this, the applicability to the fabric was evaluated on the basis of contact angle measurements, abrasion resistance and tensile tests. Major findings included that it is possible to incorporate Bacillus spores in coated fabrics and these can behave like q reservoir for beneficial bacteria.

PL

Zakażenia szpitalne stanowią coraz większy problem w procesie hospitalizacji pacjentów. Tekstylia szpitalne są istotnym źródłem patogenów szpitalnych. Kontakt z tymi tekstyliami prowadzi najczęściej do zanieczyszczenia i zanieczyszczenia krzyżowego hospitalizowanego pacjenta i personelu szpitalnego. Jednakże powszechnie stosowane środki przeciwdrobnoustrojowe stosowane w produkcji tekstyliów przeciwbakteryjnych okazują się nie spełniać oczekiwań pod względem toksyczności i oporności na środki przeciwdrobnoustrojowe. Zarodniki Bacillus mogą być dobrym rozwiązaniem w walce z patogennymi bakteriami. W badaniu do powlekania tkanin poliestrowych zastosowano zarodniki Bacillus. Następnie monitorowano wzrost i żywotność korzystnych bakterii na tekstyliach za pomocą metody płytek agarowych. Poza tym wykonano pomiary kąta zwilżania, odporności na ścieranie i próby rozciągania. Stwierdzono, że zastosowanie zarodników Bacillus do powlekania tekstyliów szpitalnych daje zadowalające efekty.

3

Tensile and tearing properties of bi-axial warp knitted coated fabrics

Luo Y., Hong H., Fangueiro R.

Autex Research Journal

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2008

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Vol. 8, no. 1

17--20

EN

Based on uni-axial tensile testing, the performances of bi-axial warp knitted PET/PVC flexible composites has been analyzed in seven in-plane directions, i.e., 0°,15°,30°,45°,60°,75° and 90°. The crack propagation of each sample has been observed and analyzed by evaluating the influence of the crack length and direction under uni-axial testing. The results show that bi-axial warp knitted coated fabrics present a strong orthotropic behavior and that the tearing strength depends on the initial crack orientation and length. Regardless of the crack length and orientation, the propagation is always perpendicular to the tensile loading direction.