scholarly journals The New Use of Diffusion Theories for the Design of Heat Setting Process in Fabric Drying

10.5772/48484 ◽  
2012 ◽  
Author(s):  
Ralph Wai Lam Ip ◽  
Elvis Iok Cheong W
Keyword(s):  
Heat Setting ◽  
Setting Process

Effect of Heat Setting Methods on Structures and Properties of High Strength Polyvinyl Alcohol Fibre

2015 ◽  
Vol 815 ◽  
pp. 643-648
Author(s):  
Yin Zhu ◽  
Jiong Xin Zhao
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Polyvinyl Alcohol ◽  
Setting Time ◽  
High Strength ◽  
Single Fibre ◽  
X Ray Diffraction ◽  
Heat Setting ◽  
Heat Treated ◽  
Setting Process

The effect of heat setting methods on the structures and mechanical properties of high strength polyvinyl alcohol (PVA) fibre is studied in this article. The microstructure and mechanical properties of heat treated PVA fibre is investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD), and single fibre electronic tensile strength tester. Results show that the heat setting method with constant tension is a good heat setting method which can largely enhance the tensile strength of PVA fibre. During the heat setting process, the mechanical properties of PVA fibre are greatly affected by the temperature, tension and setting time. When the temperature is 220°C, tension is 5cN/dtex and setting time is 90sec, the tensile strength of PVA fibre increases from 12.0cN/dtex to 16.4cN/dtex in compare with the PVA fibre without heat setting

The Effect of Heat-Setting Conditions on the Performance Characteristics of Warp Knitted Spacer Fabrics

2016 ◽  
Vol 11 (3) ◽  
pp. 155892501601100 ◽  
Author(s):  
Gözde Ertekin ◽  
Arzu Marmarali
Keyword(s):  
Closed Form ◽  
Dimensional Stability ◽  
Unit Area ◽  
Air Permeability ◽  
Performance Characteristics ◽  
Surface Layers ◽  
Heat Setting ◽  
Compression Set ◽  
Setting Process ◽  
Spacer Fabrics

Spacer fabrics can be produced by using weaving or nonwoven techniques besides warp and weft knitting processes. Warp knitted spacer fabrics are produced by using polyester multifilament and monofilament yarns for surface layers and spacer yarn, respectively. After knitting process, surface layers of these fabrics are in the closed form. Then these fabrics are subjected to a heat-setting treatment in order to increase their structural stability and to achieve an open form with holes. In this study, it is aimed to investigate the effect of heat-setting conditions on the performance characteristics of the warp knitted spacer fabrics. Mass per unit area, thickness, air permeability, compressibility, dimensional stability and compression set properties were measured and evaluated statistically in order to determine the effects of heat-setting conditions such as temperature, duration of heat-setting and stretching (the tension applied to the samples during heat-setting) on the performance characteristics. The results revealed that, heat-setting process has significant effect on all measured performance characteristics of the samples. After heat-setting process, air permeability and compressibility values increases while mass per unit area and compression set values decreases.

scholarly journals Analysis of potential waste heat recovery from a stenter in a textile plant

DYNA ◽  
2021 ◽  
Vol 88 (217) ◽  
pp. 292-302
Author(s):  
Karen Paola Cacua ◽  
Ricardo Mazo-Restrepo ◽  
Pedro Alvarado
Keyword(s):  
Thermal Energy ◽  
Heat Recovery ◽  
Waste Heat ◽  
Heat Setting ◽  
Promising Alternative ◽  
Recovery Potential ◽  
Setting Process ◽  
Total Input ◽  
Energy Balances ◽  
Mass And Energy Balances

The textile sector, an important economic driving force in Antioquia, Colombia, uses great quantities of thermal energy mainly produced by coal combustion, which holds enormous potential for recovery. One of the most common processes in a textile plant is heat setting, which uses a significant amount of thermal energy to adjust the properties of fabrics, such as shrinking, stiffness, pull strength, width, and stretching. In this study, we calculate the mass and energy balances of a stenter and propose a system to recover the energy available in its exhaust gases. The energy recovery potential in this heat setting process is 800.97 kW, which represents 87.2% of the total input energy. Additionally, we evaluate different heat exchangers to recover the available heat and present criteria to select them. Finally, thermosyphons, whose thermal efficiency was theoretically determined here, offer a promising alternative for heat recovery from actual stenters.

Physical modification of polytetrafluoroethylene flat membrane by a simple heat setting process and membrane wetting remission in SGMD for desalination

Desalination ◽  
2014 ◽  
Vol 354 ◽  
pp. 143-152 ◽  
Author(s):  
Feng Wang ◽  
Jiuming Li ◽  
Hailin Zhu ◽  
Huapeng Zhang ◽  
Hongyan Tang ◽  
...  
Keyword(s):  
Heat Setting ◽  
Physical Modification ◽  
Setting Process ◽  
Flat Membrane ◽  
Membrane Wetting

Design of an Extrusion and Heat Setting Machine for Needled Filter Felts

2013 ◽  
Vol 774-776 ◽  
pp. 148-151
Author(s):  
Xue Mei Li ◽  
Yong Du
Keyword(s):  
Motor System ◽  
Comparative Experiment ◽  
Treatment Technology ◽  
Heat Setting ◽  
Short Cycle ◽  
Low Intensity ◽  
Heat Treatment Technology ◽  
Setting Process ◽  
New Type ◽  
Heat Preservation

The setting process of the needling filter felt by heat can control its flatness and cohesion and can ensure its filtering precision. Based on this, the new type of needling process and the new type of heat treatment technology were developed, the setting arc structure and heat preservation measures were designed, the main roller working system for setting and driving motor system were designed, and they have been put into production. The comparative experiment results show that this device overcomes such defects as surface roughness, easy deformation, breathable unevenness, low intensity and short cycle in the traditional filter felt, which can complete the two processes of extrusion and heat setting for once, and the filtration precision, setting efficiency and the rate of qualified products have improved obviously.

Properties of Self-Expanding Nitinol Stents Treated by Addition of 600°C Heat Setting Process

2011 ◽  
Vol 239-242 ◽  
pp. 2206-2209
Author(s):  
Zheng Pin Wang ◽  
Jian Lu Ma ◽  
Yu Hong Yao ◽  
Jiang Nan Liu ◽  
Wei Gao ◽  
...  
Keyword(s):  
The Body ◽  
Material Strength ◽  
Medical Applications ◽  
Heat Setting ◽  
Nitinol Stent ◽  
Finish Temperature ◽  
Setting Process ◽  
Nitinol Stents ◽  
Second Phases ◽  
Elongation Percentage

For its two unique properties of superelasticity and shape memory, nitinol is widely used in medical applications. Traditionally, most nitinol stents are normally heat set at 485°C, which induces the formation of the Ni-rich second phases such as Ti2Ni3 and Ti3Ni4, increases the austenite finish temperature and reduces material strength and fatigue performance. The addition of 600°C heat setting was applied to the nitinol stents after 485°C heat setting process and its effect on the mechanical, dimensional and functional properties of the nitinol stents were investigated. The experimental results showed that the nitinol stent tubes with the addition of 600°C heat setting process had higher elastic modulus, ultimate tensile strength, elongation percentage, inner dimension and outer dimension than those of the nitinol stents with 485°C heat setting process. Moreover, after the addition of 600°C expansion step, the nitinol stents almost had the same average deployment force and deployment accuracy as those of the nitinol stents with 485°C heat setting process and higher average inner dimension (ID) and outer dimension than that of those without the 600°C expansion step. Either treated with the addition of 600°C heat setting process or only 485°C heat setting process, the average austenite finish temperature (Af ) of the nitinol stents was both lower than the body temperature and the average Af of the fomer was 8°C lower than that of the latter.

scholarly journals Analysis of the heat setting process

2016 ◽  
Vol 141 ◽  
pp. 012018 ◽  
Author(s):  
N Besler ◽  
Y S Gloy ◽  
T Gries
Keyword(s):  
Heat Setting ◽  
Setting Process
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