Investigation of Dimensional and Physical Properties of Eri Silk Bi-Layer Knit Fabrics for Active Wear Applications

2021 ◽  
Vol 8 (6) ◽  
pp. 22-30
Author(s):  
T. Sathish Kumar ◽  
M. Ramesh Kumar ◽  
B. Senthil Kumar

The knitwear industry caters to the needs of the modern youth, whose preferences vary according to the trends and tastes of the modern age. This paper endeavors to demonstrate that active wear fabrics made of eri silk have very good physical properties. The main objective of this research is to investigate dimensional and physical properties of plated interlock, mini-flatback rib, and flatback rib structures developed with two different yarn counts (30s and 40s). The dimensional and physical properties of those samples are investigated in terms of dimensional stability, spirality, bursting strength, elongation percentage, fabric areal density, and fabric thickness. Variables such as yarn count and knit structure play a significant role on the dimensional and physical properties of the fabric.

2019 ◽  
Vol 6 (5) ◽  
pp. 30-38
Author(s):  
Farial Islam Farha ◽  
Shamima Akter Smriti ◽  
Md. Aswad Al Haque Sarker ◽  
Fujun Xu

The current study evaluates the effect of fiber composition in three-thread fleece fabrics if all other knitting and processing conditions remain constant. Four samples of three-thread fleece fabrics were produced on the same fleece machine using the same yarn count and stitch length for face, binding, and fleecy yarns. Some important parameters, namely width, areal density, pilling resistance, bursting strength, and dimensional stability, were characterized. Changes mainly appeared due to the compositional alteration of cotton, viscose, and polyester content in the yarns. The results showed that the fiber composition of the finished samples of three-thread fleece fabrics significantly influenced all parameters studied, except for dimensional stability.


2017 ◽  
Vol 25 (0) ◽  
pp. 75-81 ◽  
Author(s):  
Ebru Çoruh

In this study, dimensional and some physical properties of plain (single jersey) and lacoste knitted fabrics made from 50/50 modal/combed cotton blended yarns (tex 21 and 15) were investigated. Twelve weft knitted fabrics were produced with two different structures and three different densities (loose, medium, tight). For physical properties, the fabric weight per unit area, fabric thickness, bursting strength, air permeability and dimensional stability were evaluated. We focused on the dimensional stability properties of outwear knitted fabrics. The total dimensional change of the fabric’s dimensions and structural properties were measured and evaluated after ten washing cycles and then flat dried. The results show that the weight per unit area, thickness, air permeability and dimensional stability values are independent of the yarn linear density, fabric structure and fabric density. Statistically evaluated using Design Expert Analysis of variance (ANOVA) software 6.06., test results show that dimensional stability is mostly effective for the bursting strength, air permeability and fabric weight per unit area.


Alloy Digest ◽  
1958 ◽  
Vol 7 (1) ◽  

Abstract APEX 417 is an aluminum-magnesium casting alloy having high strength and ductility, excellent corrosion resistance and good dimensional stability. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness and fatigue. It also includes information on corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: Al-61. Producer or source: Apex Smelting Company.


Alloy Digest ◽  
1988 ◽  
Vol 37 (3) ◽  

Abstract COMPAX is a chromium-molybdenum shock-resistant tool steel characterized by high toughness, good wear resistance, good through hardening and good dimensional stability during hardening. This datasheet provides information on composition, physical properties, hardness, elasticity, and compressive strength. It also includes information on heat treating, machining, joining, and surface treatment. Filing Code: TS-488. Producer or source: Uddeholm Steel Corporation.


2012 ◽  
Vol 602-604 ◽  
pp. 2267-2272
Author(s):  
Shu Lei Zhao ◽  
Zheng Yuan Wei ◽  
Xiao Tian Ding ◽  
Qiang Lin

This paper experimentally examined the impact of four different drying methods (free drying, press drying, vacuum drying and impingement drying) on paper physical properties including roughness, elongation, air permeance, tearing resistance, tensile index and bursting strength. The handsheets materials are HWBKP (Hardwood Bleached Chemical Pulp), SWBKP (Softwood Bleached Chemical Pulp), CTMP (Chemical Thermo mechanical Pulp) and ATMP (Advanced Thermo Mechanical Pulp). Good experimental data were obtained for the four pulps under different drying conditions. The results of our investigation indicate that press drying have lower surface roughness, elongation and air permeance but higher tearing resistance; the vacuum drying have higher roughness, tensile index and bursting strength; the impingement drying have lower tearing resistance, tensile index and bursting strength but higher elongation and air permeance. Selection of different drying conditions for effective productivity and quality improvement potential is proposed as a direction for the future dryer design.


2021 ◽  
Vol 22 (21) ◽  
pp. 11600
Author(s):  
Dong Jin Choi ◽  
Kyoung Choi ◽  
Sang Jun Park ◽  
Young-Jin Kim ◽  
Seok Chung ◽  
...  

Gelatin has excellent biological properties, but its poor physical properties are a major obstacle to its use as a biomaterial ink. These disadvantages not only worsen the printability of gelatin biomaterial ink, but also reduce the dimensional stability of its 3D scaffolds and limit its application in the tissue engineering field. Herein, biodegradable suture fibers were added into a gelatin biomaterial ink to improve the printability, mechanical strength, and dimensional stability of the 3D printed scaffolds. The suture fiber reinforced gelatin 3D scaffolds were fabricated using the thermo-responsive properties of gelatin under optimized 3D printing conditions (−10 °C cryogenic plate, 40–80 kPa pneumatic pressure, and 9 mm/s printing speed), and were crosslinked using EDC/NHS to maintain their 3D structures. Scanning electron microscopy images revealed that the morphologies of the 3D printed scaffolds maintained their 3D structure after crosslinking. The addition of 0.5% (w/v) of suture fibers increased the printing accuracy of the 3D printed scaffolds to 97%. The suture fibers also increased the mechanical strength of the 3D printed scaffolds by up to 6-fold, and the degradation rate could be controlled by the suture fiber content. In in vitro cell studies, DNA assay results showed that human dermal fibroblasts’ proliferation rate of a 3D printed scaffold containing 0.5% suture fiber was 10% higher than that of a 3D printed scaffold without suture fibers after 14 days of culture. Interestingly, the supplement of suture fibers into gelatin biomaterial ink was able to minimize the cell-mediated contraction of the cell cultured 3D scaffolds over the cell culture period. These results show that advanced biomaterial inks can be developed by supplementing biodegradable fibers to improve the poor physical properties of natural polymer-based biomaterial inks.


2012 ◽  
Vol 82 (7) ◽  
pp. 708-718 ◽  
Author(s):  
Nazan Erdumlu ◽  
Bulent Ozipek ◽  
William Oxenham

The properties and spinning limits of carded cotton vortex spun yarns were investigated through the progressive change in yarn count. The yarns were tested for structural and physical properties. Critical parameters were obtained, including the ratio of wrapper fibers to core fibers, proportion and average length of different structural classes in the yarn. The structural analysis revealed that the wrapper fibers constitute an increasing proportion of the fibers as the yarn becomes finer. Moreover, the proportion and average length of different structural classes in vortex spun yarns change with yarn count. The analysis of the data obtained from yarn testing showed that as the yarn becomes finer, the yarn becomes more uneven and the number of yarn imperfections markedly increase. On the other hand, the tensile properties of vortex spun yarns remain almost unchanged as the yarn gets finer.


PERENNIAL ◽  
2007 ◽  
Vol 3 (1) ◽  
pp. 1
Author(s):  
Ifa Zanty Wahyuni ◽  
Musrizal Muin ◽  
. Suhasman

The effect of preservative treatment using carbon dioxide as a carrier solvent on wood physical properties and dimensional stability had been observed on three commercial wood species (Agathis sp., Palaquium sp., and Heritiera sp.). For the purpose of the study, wood samples measuring 1,5 (R) x 1,5 (T) x 15 (L) cm were prepared. Treatment was conducted at elevated temperature (50C - 350C) and increased pressure (60 - 80 kgf/cm2) on one occasion with five replicates using two specimens of each wood species for each treatment. The final treatment condition was maintained for three different periods (10, 20, 30 minutes). Results indicated that the physical properties and dimensional stability of the preserved wood were not significantly affected by the application of CO2 impregnation as carrier solvent. Key words: Preservative treatment, Carbon dioxide, Carrier solvent, Wood physical properties, Wood dimensional stability


2018 ◽  
Vol 26 (5(131)) ◽  
pp. 47-53 ◽  
Author(s):  
Balakrshnan Senthil Kumar ◽  
Thangavelu Ramachandran

Eri silk, a wild silk variety available in the northeastern states of India, has better softness, tensile and thermal properties. The present study aimed to develop different knitted structures and investigate the influence of knitting process variables on the thermal comfort and wicking properties. Knitted single jersey and single pique fabric structures were produced with two sets of yarns – 25 tex and 14.32 tex with three levels of loop length. Thermal properties of the fabric were analysed using an Alambeta instrument, and the wicking ability was measured with an vertical wicking tester. Thermal comfort properties of eri silk were also compared with those of conventional mulberry silk, with the experiment result revealing that eri silk has better comfort values. A statistically significant correlation is found between knitting process parameters viz. the yarn count, loop length knitting structure and the thermal and wickability values of the fabrics.


Author(s):  
Imana Shahrin Tania ◽  
Md. Zulhash Uddin ◽  
Kawser Parveen Chowdhury

TApplication of crosslinking agent to impart wrinkle recovery property on cotton fabrics is very popular for textile industry. This paper represents the effect of different crosslinking agent on the physical properties and the wrinkle recovery of cotton knit fabric. Here five different types of crosslinking agent from three different chemical companies were used. The work was divided into two parts .At first; crosslinking agents were applied on cotton fabric than various related tests were done on the treated and untreated fabric. Better crease resistancy was found on the finishing agent having high formaldehyde content .The other important properties like tensile strength, dimensional stability, stiffness, abrasion resistance pilling resistance and areal density was studied here. Among them some properties were improved and some were fall down.


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