GATE (TF) Textile 2020 Question Paper Solution | GATE/2020/TF/36

A multiphase loom, also known as a multi-shuttle loom, is a type of weaving machine that allows multiple shuttles to be used in the weaving process. The primary advantage of a multiphase loom is its ability to increase weaving efficiency and productivity by allowing multiple wefts to be inserted simultaneously.
With a multiphase loom, the weaving process is divided into several phases, with each phase using a separate shuttle to insert a weft thread into the warp threads. This allows the loom to weave wider and more complex patterns, as well as thicker fabrics, compared to a single-shuttle loom.
Additionally, the use of multiple shuttles enables the loom to weave fabrics with different colors, textures, and fibers, all in a single weaving pass. This can save time and reduce the number of weaving passes required to produce a finished fabric.
Overall, the main advantage of a multiphase loom is its ability to improve weaving efficiency and productivity while enabling the creation of more complex and diverse fabrics.

The principle of a multiphase loom is to divide the weaving process into several phases and use multiple shuttles to insert weft threads into the warp threads simultaneously. This allows for more efficient and productive weaving, enabling the loom to weave wider and more complex patterns, as well as thicker fabrics, with different colors, textures, and fibers. The use of multiple shuttles reduces the number of weaving passes required to produce a finished fabric, resulting in faster production times and improved efficiency.

The objective of a projectile loom is to weave fabric by propelling a small metal or plastic device called a “projectile” through the shed (the opening between the warp threads) to carry the weft thread across the loom. The projectile is then caught by a “receiver” on the other side of the loom, and the weft thread is beaten into place by the loom’s reed.
The main objective of a projectile loom is to produce high-quality woven fabrics at a fast production rate. Compared to other types of looms, projectile looms are capable of weaving complex patterns, have a higher weaving speed, and can produce a wide variety of fabrics, including heavy and dense fabrics. The use of projectiles in the weaving process also ensures that the weft thread is placed accurately and uniformly across the fabric, resulting in a high-quality finished product. Overall, the objective of a projectile loom is to produce high-quality fabrics at a fast rate, making it a popular choice for textile manufacturers.

The projectile loom is a type of weaving machine used in textile manufacturing. Some of its key features include:
High weaving speed: Projectile looms are known for their high weaving speed, which allows for fast and efficient production of fabrics.
Flexibility: Projectile looms are highly flexible and can be used to weave a wide range of fabrics, including those with complex patterns and designs.
Accurate placement of weft: The use of projectiles in the weaving process ensures that the weft thread is placed accurately and uniformly across the fabric, resulting in high-quality finished products.
Low maintenance: Projectile looms are relatively simple in design and require minimal maintenance, making them a cost-effective choice for textile manufacturers.
Automatic operations: Most modern projectile looms are equipped with computerized control systems that enable them to perform a range of automatic functions, including changing patterns, cutting and sewing fabrics, and monitoring quality.
High production volume: Projectile looms are designed for high-volume production, enabling textile manufacturers to produce large quantities of fabric quickly and efficiently.
Overall, the projectile loom is a versatile and efficient weaving machine that is widely used in textile manufacturing for its ability to produce high-quality fabrics at a fast rate.

A projectile loom is a type of weaving loom that uses a shuttle to propel the weft thread back and forth through the warp threads to create a woven fabric. Here is a general overview of how a projectile loom works:
1)The warp threads are first wound onto the loom’s back beam, which is located at the back of the loom.
2)The warp threads are then threaded through the heddles and reed, which are located at the front of the loom. The heddles help to control the up and down movement of the warp threads, while the reed helps to space them evenly apart.
3)The weft thread is wound onto a pirn or bobbin, which is then loaded into the projectile shuttle.
4)The projectile shuttle is then shot across the width of the loom, propelled by a burst of compressed air or a mechanical drive system.
5)As the projectile shuttle passes through the warp threads, it carries the weft thread with it, creating a new row of woven fabric.
6)The projectile shuttle is then caught at the other end of the loom by a catcher mechanism, which slows it down and brings it to a stop.
7)The weft thread is then beaten into place by the reed, and the process is repeated with the shuttle moving in the opposite direction.
8)Once the fabric is complete, it is wound onto the front beam and cut from the loom.

Air-jet looms are a type of weaving machine that use a jet of compressed air to propel the weft yarn through the warp yarns to create a woven fabric. The working principle of an air-jet loom can be broken down into the following steps:
1)Shedding: The first step in the weaving process is to create an opening in the warp yarns, called a “shed.” This is done by raising some of the warp yarns and lowering others, creating a space for the weft yarn to be inserted.
2)Insertion: Once the shed is formed, the weft yarn is inserted into the opening using a narrow, compressed air jet. The air jet carries the weft yarn across the width of the loom and through the shed, where it is interlaced with the warp yarns.
3)Beat-up: After the weft yarn is inserted, a comb-like device called a “reed” pushes the weft yarn tightly against the previous row of weft yarns. This process is called “beat-up,” and it ensures that the fabric is tightly woven.
4)Take-up: Once the weft yarn has been inserted and beaten-up, the fabric is advanced by a small amount, which is called “take-up.” This step ensures that the fabric is woven uniformly and without any gaps or overlaps.
5)Repeat: The entire process is repeated continuously until the fabric reaches the desired length. At this point, the fabric is cut from the loom and sent for finishing.
In summary, air-jet looms use compressed air to insert the weft yarn into the warp yarns, creating a tightly woven fabric. The process is highly automated and allows for fast and efficient production of a wide range of fabrics.

Air jet loom fabric refers to any type of woven textile that has been produced using an air jet loom. Air jet looms are a type of weaving machine that use a jet of compressed air to propel the weft yarn through the warp yarns to create a woven fabric.
Air jet loom fabric can be made from a variety of materials, including cotton, polyester, silk, wool, and blends of different fibers. The fabric can be produced in a range of weights and textures, from lightweight, sheer fabrics to heavy, densely woven textiles.
Air jet loom fabrics are known for their high-quality finish, uniformity, and consistency. The air jet weaving process allows for fast and efficient production of fabrics, making it a popular choice for mass production of textiles.
Air jet loom fabrics are used in a wide range of applications, including apparel, home textiles, and industrial textiles. Some examples of air jet loom fabrics include dress shirts, denim, bed linens, towels, and automotive textiles.

A shuttle loom is a type of weaving loom that uses a shuttle to weave yarn or thread into a fabric. The shuttle is a small, boat-shaped device that carries the weft thread back and forth across the warp threads on the loom.
Shuttle looms were widely used in the textile industry from the early 18th century until the mid-20th century, when they were largely replaced by more modern and efficient weaving technologies such as air-jet and rapier looms. However, shuttle looms are still used in some niche textile applications, and they are valued by some artisans and craftspeople for their unique characteristics and the aesthetic qualities of the fabrics they produce.
A shuttle loom is a type of weaving loom that uses a shuttle to weave yarn or thread into a fabric. The shuttle is a small, boat-shaped device that carries the weft thread back and forth across the warp threads on the loom.

There are different types of shuttle looms, including:
1)Hand-operated shuttle looms: These looms are operated by hand, and were the earliest type of shuttle loom. They were used extensively in the textile industry until the introduction of power-operated looms.

2)Power-operated shuttle looms: These looms are powered by an external source, such as a steam engine, waterwheel, or electric motor. They are faster and more efficient than hand-operated looms, and were widely used in the textile industry during the 19th and 20th centuries.
3)Automatic shuttle looms: These looms use a mechanism to automatically change the shuttle from one side of the loom to the other. This eliminates the need for an operator to manually change the shuttle, and allows for even greater speed and efficiency in the weaving process.
4)Projectile shuttle looms: These looms use a projectile to carry the weft thread across the warp threads. The projectile is propelled across the loom by a series of rollers, and does not require a shuttle. Projectile looms are faster and more versatile than traditional shuttle looms, and are commonly used in modern textile production.

In a weaving loom, a shuttle is a small boat-shaped device that carries the weft yarn across the warp threads during the weaving process. The shuttle typically has a pointed end that allows it to pass through the shed, which is the opening created by lifting some of the warp threads using the loom’s harness.
Shuttles can be made of various materials, such as wood, plastic, or metal, and can vary in size depending on the type of loom being used. The shuttle is loaded with the weft yarn and then propelled across the loom, back and forth, by the operator or by the loom’s machinery.
In traditional shuttle looms, the shuttle is manually exchanged from one side of the loom to the other by the weaver, which can be a physically demanding task. However, modern looms often use other mechanisms, such as air jets or rapier systems, to insert the weft yarn, eliminating the need for shuttles.