Presentation on moisture content & moisture regain
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Moisture regain and moisture content are measures of a textile's ability to absorb moisture, expressed as a percentage. Moisture regain is defined as the percentage of water present in an oven-dried textile sample after it reaches equilibrium in a standard testing environment. Moisture content is defined as the percentage of water present in the total weight of a textile sample. The chemical composition and physical structure of different textile materials determine their moisture absorption properties and resulting moisture regain and content percentages.
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3. It describes the machine components and operating parameters like temperature, speed, and overfeed percentage for different fabric types.
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Spun Laid Process, Melt Blown Process, Differences between spun laid Process ...
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stiffness,Handle,Drape properties of fabric ,Fabric property TTQC-2
stiffness,Handle,Drape properties of fabric ,Fabric property TTQC-2
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Here are the solutions to the problems:
Problem #01:
Oven dry weight = 200 gm
Standard regain of cotton = 8.5%
CIW = Oven dry weight + (Oven dry weight x Standard regain%)
= 200 + (200 x 8.5/100) = 200 + 17 = 217 gm
For 1000 kg consignment:
Oven dry weight = 1000 x 200/217 = 920.74 kg
CIW = 1000 kg
Problem #02:
Oven dry weight of 20 oz sample = 16 oz
Cotton content = 80%
Nylon content = 20%
Standard regain of cotton = 8.5%
Standard regain
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Relative humidity is defined as the ratio of the partial pressure of water vapor in an air-water mixture to the equilibrium vapor pressure of water at a given temperature. It can be measured using various devices, including resistive, capacitive, crystal, thermal, gravimetric, and optical hygrometers. Resistive hygrometers measure changes in the electrical resistance of moisture-absorbing materials as humidity varies. Capacitive hygrometers detect changes in capacitance of a polymer film. Crystal hygrometers measure changes in mass of a hygroscopic crystal as it absorbs water from the air.
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This document provides an overview of drying processes. It discusses that drying involves removing moisture from solids, solutions, slurries, and pastes. There are various modes of heat transfer used in drying, including convection, conduction, and radiation. Common industrial drying equipment includes batch dryers like tray and agitated dryers, as well as continuous dryers like tunnel dryers, belt dryers, and turbo-tray tower dryers. Drying rates can be constant, falling, or exponentially decreasing depending on the moisture content and properties of the material being dried.
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This study examined the effect of fabric softener on the thermal comfort properties of cotton and polyester fabrics after repeated laundering. It found that fabric softener treatment significantly decreased the air permeability and wickability of cotton fabrics but did not affect polyester fabrics. The softener treatment increased the thermal insulation value of both cotton and polyester fabrics to a similar degree. Statistical analysis showed the results were significant for air permeability, thermal insulation value, and wickability of the fabrics. The chemical finishing had a significant influence on the thermal comfort properties of cotton and polyester fabrics after repeated laundering cycles.
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Presentation on moisture content & moisture regain
- 2. The ability of fibre to take up the moisture is known as absorbency. The absorbency is expressed in the terms of moisture regain and moisture content. Both are represented in percentage. Moisture absorption depends on the chemical nature and physical arrangement of fibre. The Indian atmosphere is generally very humid . In this conditions , our moisture managed fabric with moisture absorbent properties will ensure that the person wearing garment made of such fabrics is very comfortable and feels very near to nature. INTRODUCTION:
- 3. MOISTURE REGAIN : Moisture regain is defined as the percentage of the water present in a textile material of oven dry weight of the material. Measurements are done under standard testing conditions (70± 2℉ and 65% ±2% relative humidity). Saturation regain is the moisture regain of a material at 95-100% relative humidity. Wt. of the water in the material Moisture regain = × 100 Oven dry wt. of the material
- 4. What is Oven dry Weight? The constant weight obtained by drying textile materials at a specific temperature of (105±3 )℃ . We can also say that it is the weight of piece after it is oven dry and all water has been removed. What is Standard Moisture Regain? The moisture absorbed by a particular weight sample in the standard atmosphere after treating at (105±3)℃ is called Standard Moisute Regain . It is also called official regain.
- 5. MOISTURE CONTENT: Moisture content is defined as the percentage of water present in a textile material of total weight of the material. Wt. of water present in a material Moisture content = × 100 Total weight of the material The percentage of moisture in a textile material brought into equilibrium with a standard atmosphere after partial drying, calculated as percentage of the moisture-free weight.
- 6. MOISTURE REGAIN AND MOISTURE CONTENT PERCENTAGE IN VARIOUS TEXTILE MATERIALS:-
- 7. THE RELATION BETWEEN MOISTURE REGAIN AND MOISTURE CONTENT:
- 8. dgs
- 9. PRESENTED BY KATHA MAHANTY (Roll No.:- 11101417027) SUBARNA DEY (Roll No.:- 11101417009)