Question 47 (Textile Engineering & Fibre Science)
Consider the following Assertion [a] and Reason [r]
[a] In the case of minimum application technique, compared to the conventional rolls of a typical padding mangle, Roberto rolls substantially reduce the wet pick up.
[r] The Roberto rolls are connected to vacuum pump to facilitate removal of liquor from the fabric.
Determine the correctness or otherwise of the above Assertion [a] and Reason [r]
| (A) | [a] is right [r] is wrong |
| (B) | [a] is right [r] is right |
| (C) | [a] is wrong [r] is right |
| (D) | [a] is wrong [r] is wrong |
Answer / Solution
[Show Answer]
Option A
Frequently Asked Questions | FAQs
What is padding mangle?
A padding mangle is a machine used in textile processing to apply liquid chemicals, dyes, or finishes to fabrics. The machine consists of two or more rollers, typically made of steel, rubber, or other materials, that rotate in opposite directions and are pressed together under pressure. The fabric is fed through the rollers, and the chemical or finish is applied to the surface of the fabric as it passes through.
The padding mangle is a versatile machine that can be used for a variety of textile finishing applications, such as dyeing, printing, and coating. The pressure and speed of the rollers can be adjusted to control the amount of chemical or finish applied to the fabric, and the number of rollers can be varied depending on the specific application.
Padding mangles are commonly used in textile mills and finishing plants, as well as in laboratories for research and development purposes. They are available in a range of sizes and configurations to accommodate different types and widths of fabrics, and can be equipped with additional features such as heating or cooling elements to further customize the finishing process.
Overall, the padding mangle is an essential tool in textile processing, allowing manufacturers to apply a range of finishes and treatments to fabrics in a controlled and efficient manner.
What is the objective of padding mangle machine?
The main objective of a padding mangle machine is to apply liquid chemicals, dyes, or finishes to fabrics in a controlled and efficient manner. The machine consists of two or more rollers that rotate in opposite directions and are pressed together under pressure. As the fabric is fed through the rollers, the chemical or finish is applied to the surface of the fabric, allowing for precise and consistent application.
There are several specific objectives that a padding mangle machine can achieve:
Dyeing: The padding mangle can be used to apply dye to fabrics, allowing for even distribution of color and a consistent appearance.
Printing: The padding mangle can also be used for printing designs onto fabrics, using a similar process to dyeing.
Finishing: The padding mangle can apply finishes to fabrics, such as water repellent, flame retardant, or wrinkle-resistant treatments.
Sizing: The padding mangle can apply sizing agents to the surface of fabrics to improve their strength, stiffness, and resistance to shrinkage.
Coating: The padding mangle can apply coatings to fabrics, such as a layer of rubber for waterproofing or a layer of adhesive for bonding to other materials.
Overall, the padding mangle machine is a versatile tool in textile processing, allowing for a wide range of chemical and finishing treatments to be applied to fabrics in a controlled and efficient manner. By achieving these objectives, the machine can improve the appearance, durability, and performance of fabrics for a variety of applications.