Sewing Threads

Ukponmwan, J. O.; Mukhopadhyay, Arunangshu; Chatterjee, Kanu

doi:10.1080/00405160008688888

Cited by 46 publications

(34 citation statements)

References 52 publications

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“…Problems that have to be overcome even for polyamide and polyester sewing threads are fusing (due to needle heating) and seam puckering (the elasticity is a contributing cause) [193], hence, the application of various chemical finishes overcomes these issues. In addition to polyamide and polyester, aramid (Kevlar Ò ) sewing threads are also used for sewing airbags and the stitch densities are selected carefully for maximum performance.…”

Section: Textile Progress 247mentioning

confidence: 99%

“…It joins the fabric components by forming a seam that is intended to provide uniform stress transfer from one fabric piece to the other, thus preserving the overall integrity of the assembly [193]. The sewing threads are smooth, hard-twisted multi-ply yarns, treated with special finishes to make them resistant to stresses in their passage through the needle eye, the airbag fabric itself and other parts of the machine involved in seaming and stitching operations.…”

Section: Textile Progress 247mentioning

confidence: 99%

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Airbags

et al. 2013

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In recent years, safety systems such as seat belts and airbags have been one of the fastgrowing sectors within the automotive industry. Seat belts and airbags have made driving substantially safer since their introduction. Airbags are safety systems used to cushion the driver or passenger during a collision and reduce bodily injuries. The technology involved in the manufacturing and working of airbags is complex. Since the early stages of development, airbag technology has been undergoing continual evolution in terms of design, materials and performance. Airbags are typically made from woven fabric, which may be coated or uncoated but must be impermeable to gases and flame resistant. In terms of their operation, modern airbags are smart restraint systems, which can tailor the deployment of the airbag according to the crash severity, body size of the occupant and proximity of the occupant to the airbag system prior to deployment. The future of airbags is extremely promising because there are many diverse applications ranging from motorcycle helmets to aircraft seating. In this article, an outline is given of the historical development of airbags and their value in saving lives is illustrated by supporting statistical data. The essential parameters required for airbag yarn and fabric components are discussed in detail. In addition, the processes involved in the manufacture, assembly and testing of airbag systems are explained. The mechanisms and chemical reactions involved in the deployment of different types of airbags are also discussed, and recent developments in airbag design and their possible future applications are reported.

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Section: Textile Progress 247mentioning

confidence: 99%

Section: Textile Progress 247mentioning

confidence: 99%

Airbags

et al. 2013

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“…Seam efficiency which is the ratio of seam strength to fabric strength of the fabrics sewn, refers to the durability of the seam. Mostly, seam efficiency ranges between 85% and 90% and it can be optimized by means of many factors, such as seam type, and density of stitches, and the selection of sewing threads and needles [9,10]. Fabric properties such as breaking strength, breaking elongation, weight, thickness, extensibility cover factor, air permeability, compressibility, bending and shear rigidities have been investigated in many papers [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Study of the Relationship between Sewing and Fabric Parameters and Seam Strength

Yassen¹

2017

التصميم الدولية

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Keywords: Abstract: Seam Strength Clothing Sewing Needle Sewing Machine Fabric CharacteristicsSeam performance plays a vital role in the quality of clothing products. Seam strength is one of the key parameter to seam performance. This study aimed at studying the effects of sewing parameters: thread count (59/2 dtex, 35/2 Nm and 20/2 Nm), sewing needle size (14, 16 and 18 of Singer system) and stitch density (3, 5 and 7 stitches/cm) as well as fabric characteristics: yarn count (10/1, 20/1 and 30/1 Ne) and weft density (20, 21 and 22 picks / cm). The results of Analysis of variance of the main findings of this study revealed that seam strength is significantly and positively affected by both sewing and fabric characteristics. A value of correlation coefficient 0.97 was obtained for regression lines between needle size and seam strength and a value 0.99 between sewing thread count and the seam strength.

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“…e thread has to pass through the needle eye, fabric and bobbin case mechanism 50−80 times before becoming a part of the seam [2]. Local abrasion and cutting of the needle thread can occur due to the rubbing at the top of the needle eye [3].…”

Section: Introductionmentioning

confidence: 99%

Influence of Needle Heat during Sewing Process on Tensile Properties of Sewing Thread

Mazari¹,

Havelka²

2013

TEK

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In this work, the tensile properties of a sewing thread, i.e. tenacity, breaking elongation and initial modulus of two common industrial sewing polyester-polyester core spun threads, were studied at four sewing stages. Firstly, the needle heat was measured at diff erent speeds from 1000 rpm to 4700 rpm of an industrial lockstitch sewing machine with the inserted thermocouple method. Secondly, the tensile properties of a thread were compared at diff erent predefi ned sections of the sewing thread in the sewing process. The results show that the needle heat and bobbin thread interaction has a great impact on the sewing thread tensile strength, while the tensile strength is minimal at the point when the machine stops and the thread is in direct contact with the hot needle. Tenacity, breaking elongation and initial modulus decrease substantially with a higher speed of the machine as the needle temperature increases. At 4000 rpm of the sewing speed, the sewing thread loses 50% of its tenacity as the needle temperature reaches nearly 250 °C, the impact being higher for higher count (linear densities) threads.

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Sewing Threads

Cited by 46 publications

References 52 publications

Airbags

Airbags

Study of the Relationship between Sewing and Fabric Parameters and Seam Strength

Influence of Needle Heat during Sewing Process on Tensile Properties of Sewing Thread

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