Assume all fibers were randomly deposited in an elementary plane then prove that the mean pore diameter of the nonwoven fabric  d p  is independent of fiber diameter and dependent on fiber length l. Fig: randomly oriented fibres questionsoftextileblog Know textile Let the fibers be distributed randomly in an elementary plan of unit area and the probability of n fibers that present per unit area is given by Poisson distribution P(n) = e -c * c n / n!    ,  where c is total projected area fibres per unit area of the plane (total coverage). Evendently, c=nld,  where  l= fibre lingth and d=fibre width (diameter) The fraction of area covered by one fibre is: P(0) = e -c = ξ        -----------(i) Clearly, (1-ξ ) is the fraction of the unit area covered by fibres. The total area A c  occupied by all fibres croosing per unit area of the plane is: A c = ∑ n=2 n→∝ (n-1)P(n) = ∑ n=2 n→∝ (n-1) e -c * c n / n! = e -c [ c 2 / 2! + 2c 3 / 3! + ... + (n-1)*c n / n! + ...] = e -c [ c 0 /

Singeing Process Introduction Objectives and Advantages of Singeing Types of Singeing Machines Plate Singeing Machine Rotary-Cylinder Singeing Machine Gas Singeing Machine Parameters for Gas Singeing Machines Condition for GAS singeing Test for the effectiveness of the singeing process questionsoftextileblog know textile Introduction: The term "singe" refers to the act of superficially burning a material. In the textile industry, singeing is used to remove: Loose fibers that are not firmly bound to the yarn or fabric structure. Loose yarns that are not firmly bound to the fabric structure. Protruding fiber ends that stick out of the textile yarns or fabrics.

  Fiber Characteristics Requirements for Spinning Discuss the fibre characteristics requirements for ring and rotor spinning technologies. questionsoftextileblog know textile The characteristics of the fibers used in ring and rotor spinning technologies are crucial for determining the quality and efficiency of the spinning process. Some important fiber characteristics requirements for both ring and rotor spinning technologies are discussed below. Length : Long and uniform fiber length is preferred for both ring and rotor spinning as it helps to minimize fiber breakage and ensures consistent yarn quality. Strength : High fiber strength is important for both ring and rotor spinning as it helps to reduce breakage during spinning and twisting. This results in improved yarn strength and reduces waste. Uniformity : Uniform fiber diameter and strength help to produce consistent yarn quality. Uneven fibers can cause problems in spinning, twisting and winding, and result in weak spots in the ya

  Crimp Effects on Fabric Properties What is crimp? How crimp in yarns influences different fabric properties? questionsoftextileblog know textile Crimp is the waviness or curvature of individual fibers or yarns in a fabric. It is a measure of the amount of bend and curvature that is present in a fiber or yarn.  In textiles, crimp affects the following fabric properties: Tensile Strength : Crimp can improve the tensile strength of a yarn by allowing it to resist stretching more effectively. This is because crimp provides additional cross-sectional area for fibers to interlock and resist forces applied to the yarn. Elasticity : Crimp can also affect the elasticity of a fabric. Yarns with more crimp will generally be more elastic, as they can recover their original shape more easily after being stretched. Drapability : Crimp can also influence the drapability of a fabric. A fabric with a high level of crimp will tend to drape more easily, while a fabric with a low level of crimp will be

  Sheffield Type Micronaire Instrument Explain the air flow principal and Sheffield type micrinaire instrument used to determine fibre fineness. How to interpret the results obtained from this test? questionsoftextileblog know textile The air flow principle is a method used to determine the fineness (diameter) of textile fibers. It is based on the measurement of the time taken for a defined volume of air to pass through a fixed length of the fiber material. The fineness of the fiber is proportional to the time taken for the air to pass through the sample. Sheffield type micronaire instrument is an apparatus used to perform air flow measurements on textile fibers. The instrument consists of a measurement chamber, a pressure sensor, a timer, and a flow meter. The sample is placed in the measurement chamber and the time taken for a defined volume of air to pass through the sample is recorded by the timer. The flow meter measures the air flow rate. The results obtained from the Sheffield t

  Measuring Bursting Strength of Fabric How the bursting strength of fabric is measured using diaphragm bursting strength tester?  Describe the factors that affect bursting strength of fabric. questionsoftextileblog know textile The bursting strength of fabric is a measure of the maximum pressure that a fabric can withstand before it ruptures. The bursting strength of a fabric is typically measured using a diaphragm bursting strength tester, which consists of a diaphragm clamped to the fabric and a pressure source that increases the pressure on the diaphragm. The maximum pressure that the fabric can withstand is recorded as the bursting strength. There are several factors that can affect the bursting strength of a fabric, including: Fiber type : The type of fiber used to make the fabric can affect its bursting strength. For example, natural fibers like cotton and wool tend to have lower bursting strengths than synthetic fibers like polyester and nylon. Fabric structure : The structure

Textile Properties & Testing Factors Describe in detail, factors that affect the textile properties of samples and results obtained from testing instruments. questionsoftextileblog know textile Textile properties of samples can be influenced by various factors, including: Fiber type and composition : Different fibers have different properties, such as strength, elasticity, and heat resistance, which affect the overall properties of the textile. Yarn structure : The structure of the yarn, such as its twist, plies, and denier, can impact the texture, strength, and drapability of the textile. Dyeing and finishing processes : The way in which textiles are dyed and finished can affect their appearance, feel, and performance characteristics, such as colorfastness and shrinkage resistance. Fabric construction : The way in which fibers are woven or knitted together, such as the stitch type, stitch count, and fabric weight, can influence the textile's handle, drapability, and durability