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1

Comparative Study on the Properties of Taped Seams with Different Constructions

Kara Sukran, Yeşilpınar Sevil

Fibres & Textiles in Eastern Europe

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2021

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Vol. 29, no. 2 (146)

54--60

EN

Ready to wear end-products may be obtained by different assembling methods such as sewing, bonding, seam taping, welding and pressing fabrics. Currently, sewing is the most common method, but other techniques are improving day by day in accordance with the new application areas and new requirements from seamlines. Seam taping is an innovative alternative method that can improve the properties of seams. In this study, some essential properties such as the strength, elongation, thickness and air permeability of sealed samples with different constructions were compared. As taping constructions, ultrasonic bonding plus taping, sewing plus taping, and only taping methods were used. These methods were varied according to the taping temperature and speed. Also, only sewn and ultrasonically bonded samples were prepared as reference samples. In total, 20 different kinds of seam sealed samples were obtained as test materials. According to the results, taped samples were advantageous in terms of seam thickness and seam strength properties when compared to only sewn and ultrasonically bonded references. Especially, "only taped" samples were one step ahead among the all constructions. The air permeability of the taped seams decreased by a certain amount, but it is thought to be tolerable in a full garment.

PL

Gotowe do noszenia produkty końcowe można otrzymać różnymi metodami łączenia, takimi jak: szycie, podklejanie, zgrzewanie i prasowanie tkanin. Obecnie szycie jest najpowszechniejszą metodą, ale inne techniki są z dnia na dzień udoskonalane zgodnie z nowymi obszarami zastosowań i nowymi wymaganiami dotyczącymi szwów. Podklejanie szwów to innowacyjna, alternatywna metoda, która może poprawić właściwości szwów. W badaniu porównano niektóre istotne właściwości, takie jak: wytrzymałość, wydłużenie, grubość i przepuszczalność powietrza próbek o różnych konstrukcjach. Jako konstrukcje z taśmami zastosowano klejenie ultradźwiękowe plus taping, szycie plus taping i tylko taping. Metody te były zróżnicowane w zależności od temperatury i prędkości taśmowania. Jako próbki referencyjne przygotowano również próbki szyte i wiązane ultradźwiękowo. W sumie uzyskano 20 różnych rodzajów próbek zgrzewanych jako materiały testowe. Zgodnie z wynikami próbki oklejone taśmą były korzystne pod względem grubości szwu i właściwości wytrzymałości szwu w porównaniu z wzorami zszywanymi i łączonymi ultradźwiękowo. W szczególności próbki „tylko zaklejone” były o krok przed wszystkimi konstrukcjami. Przepuszczalność powietrza w szwach klejonych zmniejszyła się o pewną wartość, ale uważa się, że może być to tolerowane.

2

Systematic review and meta-analysis of surgical suture strength according to the type, structure and geometry of suture materials

Andryszczyk Marek, Topoliński Tomasz

Acta of Bioengineering and Biomechanics

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2021

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Vol. 23, no. 4

191--200

EN

Purpose: As a rule, wound healing is a natural and spontaneous process. However, in acute or surgical wounds, the wound edges need to be approximated and held together by artificial means. Surgery within the abdominal cavity or elsewhere almost always involves cutting through the skin, after which a medical procedure is conducted, followed by wound closure. The suture provides temporary mechanical support during the natural healing process of the affected tissues. Not only does it stimulate the primary wound healing, but also provides mechanical protection against wound dehiscence. Methods: This analysis is intended to juxtapose the basic factors that contribute to a change in suture strength and the possible failure of surgical sutures, which may affect the wound healing process and increase the risk of postoperative complications. Results: The preliminary search criteria used in the databases included keywords such as: “strength of suture materials”, “strength of surgical sutures”, “surgical knot strength”. Five key articles were ultimately selected from a pool of 336 articles first identified based on these search criteria. Next, a meta-analysis of the literature data was performed, taking into account factors such as the type of suture materials used, biological conditions and model conditions used in research, having a significant impact on the mechanical properties of surgical sutures. Conclusions: This comparison revealed considerable variations in the suture strength between different sutures of the same size, it also demonstrated that the decrease in suture strength strongly depends on the finished suture and the thread type.

3

Investigation of the Effects of Different Bias Angles of Stitching on Seam Performance of Wool Suits

Öztaş Hande, Gürarda Ayça

Autex Research Journal

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2019

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Vol. 19, no. 4

324--331

EN

Wool suits are always preferred due to their warmth retention in cool weather, comfort, and aesthetic features. Seams are very important for the quality of wool suits. The tensile characteristics of seamed fabric change with the change of fabric bias angle. This study aimed to investigate the effects of different seam angles with various stitch densities on the seam strength and the seam breaking extension of wool suit stitches. In this study, seam strength and seam-breaking elongation at different bias angles were investigated for the stitches of trousers and jackets of wool suits. As is known, in the production of trousers and jackets, the seams are applied not only in the direction of the weft and warp but also in the different bias angles at the crotch area and arm hole seams. Six wool fabrics with different structural properties were chosen as experimental samples. Fabrics were cut at 0°, 30°, 45°, 60°, and 90° angles and then sewn with three different stitch densities (3, 4, and 5 stitches/cm ), with lockstitch stitch type for each fabric angle. Therefore, 90 differently seamed fabric samples were prepared. The results indicated that seams prepared with 0°,45° and 90° bias angles give the highest seam strength and that 30°, 45°, and 60° bias angles give the highest seam-breaking elongation values all over the samples. Seams prepared with 30° and 60° bias angles give the lowest seam strength, and 0° and 90° bias angles give the lowest seam-breaking elongation values all over the samples.

4

Analysis of the Performance of Sewing Threads Manufactured from Conventional and Compact Ring - spun Yarns

Yeşilpınar S.

Fibres & Textiles in Eastern Europe

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2006

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Vol. 14, no. 2 (56)

20--23

EN

The compact spinning system produces a yarn structure which is different from the structure of conventional spun yarn as the result of the elimination of the spinning triangle. New perspectives introduced by compact spinning have proved their worth in all textile processes, from yarn production to the finishing stages. In this study, the seam strengths of sewing threads produced by conventional and compact spun-ring systems were investigated together with strength tests before and after washing. The results were evaluated with SPSS software. It was found out that the difference between the seam strength of sewing threads produced from conventional ring and compact yarns were not of major statistical significance, and nor was the difference in seem strength before and after washing. Additionally, the effect of the gassing process on compact sewing threads was established. The results allow us to recommende that the gassing process should not be applied to sewing threads made of compact yarns.

PL

Za pomocą kompaktowego sytemu przędzącego, dzięki wyeliminowaniu trójkąta przędnego, produkuje się przędze o strukturze odmiennej od struktury konwencjonalnej przędzy rotorowej. Nowe perspektywy, powstałe dzięki przędzeniu kompaktowemu, sprawdziły się w wielu procesach włókienniczych, od produkcji przędzy do końcowych etapów wytwarzania produktów. W przedstawionej pracy badano wytrzymałość szwów wykonanych z nici wyprodukowanych z przędz otrzymanych z konwencjonalnego i kompaktowego systemu przędzenia. Testy wytrzymałości przeprowadzano przed i po praniu. Wyniki opracowano z pomocą programu komputerowego SPSS. Stwierdzono, że różnice w wytrzymałości szwów, wykonanych z obydwu rodzajów nici, nie wykazywały istotnej różnicy statystycznej, podobnie jak wytrzymałość szwów przed i po praniu. Dodatkowo sprawdzono efekt stosowania procesu opalania na nici szewne produkowane z przędzy kompaktowej i wywnioskowano, że nie powinno się tego procesu w tym przypadku stosować.