Loom Mechanisms and Fabric Structure

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the primary aim of the author in writing this book?

To provide intricate details about fabric structure.

To critique existing literature on fabric structure.

To promote advanced fabric design techniques.

To simplify the fundamental concepts of fabric structure. (correct)

Which feature is emphasized as a special aspect of the book?

User-friendly layout and illustrations. (correct)

Complex theories and methodologies.

Extensive references to other authors' work.

Lengthy theoretical discussions.

Who is noted as a significant source of motivation for the author?

Dr.K.K.Padmanabhan.

Mr.K.Aravindan.

Dr.V.Subramaniam.

Prof.K.Arumugam. (correct)

What type of courses is the subject of fabric structure relevant to?

Graduate and diploma courses. Signup and view all the answers

What type of content does the book primarily focus on?

Fundamental aspects of fabric design. Signup and view all the answers

How does the author express gratitude in the preface?

By acknowledging the support and encouragement received. Signup and view all the answers

What type of questions and exercises are included in the book?

Chapter end review questions and exercises. Signup and view all the answers

Which additional books are suggested for further knowledge on fabric structure?

Watson’s Textile Design and Colour. Signup and view all the answers

What is the primary function of the reed in a loom?

To push the weft to the cloth fell Signup and view all the answers

Which component is responsible for sensing the warp tension in a loom?

Back beam Signup and view all the answers

What is an alternate name for the breast beam in a loom?

Front rest Signup and view all the answers

How is the count of the reed determined?

By the number of dents in two inches Signup and view all the answers

Which type of beam is fixed at the back of the loom and holds the warp sheet?

Warp beam Signup and view all the answers

What is the function of the breast beam in the weaving process?

To guide the cloth onto the cloth roller Signup and view all the answers

Which of the following types of reed is specifically designed for achieving a wider opening in the fabric?

Expanding reed Signup and view all the answers

What role does the back rest play in a loom?

To guide the warp sheet from the warp beam Signup and view all the answers

What distinguishes regular matt weaves from irregular matt weaves?

Regular matt weaves have equal extension in warp and weft directions. Signup and view all the answers

Which of the following is not an end use of matt weave?

Drapery Signup and view all the answers

Which characteristics best describe a plain weave?

Uniformity in texture Signup and view all the answers

Which type of rib is defined by a dominance of the weft threads?

Weft rib Signup and view all the answers

What is a key identifying feature of matt rib weaves?

It features irregular extension of plain weave. Signup and view all the answers

Which of the following represents a typical use of a plain weave?

Sail cloth Signup and view all the answers

Which constructional aspect is relevant for both woven shirting and canvas fabrics?

Cloth width Signup and view all the answers

What term refers to the surface quality of a fabric, often described as 'texture'?

Fabric hand Signup and view all the answers

What does the denting plan help to achieve during weaving?

To space warp ends according to desired density. Signup and view all the answers

Which order of density is most frequently used in denting plans?

One, two, three, four ends per dent. Signup and view all the answers

What is the significance of the order of arrangement of ends in the reed?

It is essential for achieving specific design features. Signup and view all the answers

Which of the following methods typically demonstrates denting plans?

Visual patterns using symbols and lines. Signup and view all the answers

In the context of denting plans, what is the purpose of using an irregular order?

To enhance specific design features. Signup and view all the answers

What commonly used denting plan is illustrated in the content?

Plan B. Signup and view all the answers

When are skip and ‘sateen’ drafts typically applied?

In special weave patterns for design. Signup and view all the answers

What should be indicated carefully in respect to the weave and the draft?

The order of the denting arrangement. Signup and view all the answers

What characteristic of plain weave contributes to its firmness compared to other weaves?

Maximum interlacing between warp and weft threads Signup and view all the answers

In a plain weave, how many warp threads and weft threads are occupied in a complete unit of the weave?

Two warp threads and two weft threads Signup and view all the answers

Which of the following weaves is likely to be less firm than plain weave due to its construction?

Twill weave Signup and view all the answers

What is a key factor that contributes to the texture of any woven structure?

Frequency of interlacing between threads Signup and view all the answers

What role do the counts of warp and weft play in the construction of plain weave?

They should be properly proportioned for best results Signup and view all the answers

How does the number of intersections affect the strength of the cloth in plain weave?

More intersections enhance the fabric's firmness Signup and view all the answers

Which of the following is NOT a characteristic of plain weave?

Lower durability compared to other weaves Signup and view all the answers

What happens if the number of warp threads and weft picks per inch is not properly proportioned?

The fabric may not achieve the desired strength Signup and view all the answers

Study Notes

Loom Mechanisms

Reed is a comb-like structure that controls the spacing of warp threads.
Functions of the reed:
- Pushes the last weft pick to the cloth fell.
- Maintains the position of warp threads.
- Guides the shuttle during weaving.
- Influences the fineness of the fabric with the healds.
- Determines the openness or closeness of the fabric.
Warp beam (weaver's beam) is located at the back of the loom and holds the warp sheet.
Back beam (back rest) acts as a guide for the warp sheet and senses warp tension.
Breast beam (front rest) guides the woven cloth and helps maintain warp and cloth tension.
Cloth beam (cloth roller) is used to wind up the woven fabric.

Fabric Structure and Design

Woven fabrics are classified based on the interlacing of warp and weft.
Basic elements of woven design:
- Weave
- Draft
- Peg plan
Denting plan determines the order of warp threads in the reed, influencing fabric design and density.

Plain Weaves

Plain weave is the simplest woven structure, interlacing two warp threads per pick with two weft threads per repeat.
Plain weave characteristics:
- Strong texture and fabric firmness
- Maximum interlacement between warp and weft
Types of plain weaves:
- Regular matt weaves: Plain weaves extended equally in warp and weft directions.
- Irregular matt weaves: Plain weaves extended unevenly in warp and weft directions.
Uses of plain weaves:
- Dress materials
- Shirtings
- Sail cloth
- Duck cloth
Other plain weaves:
- Rib weaves: Characterized by ribs formed by warp or weft threads.
- Warp rib weave: Has higher warp thread density than weft.
- Weft rib weave: Has higher weft thread density than warp.
- Matt weaves: Plain weaves with an uneven surface creating a textured look.
Constructional details:
- Warp count
- Weft count
- Ends per inch/cm
- Picks per inch/cm
- Areal density (GSM)

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Description

Explore the intricate components and functions of loom mechanisms in this quiz. Learn about the roles of the reed, warp beam, back beam, and more in the weaving process. Additionally, discover the basic elements that categorize woven fabrics based on their design.