Textile Printing Course Quiz TE-424
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Questions and Answers

Which of the following is NOT a characteristic of textile printing?

  • Localized coloration
  • Multiple colors are usually applied
  • Colorant is applied in a solution (correct)
  • Well-defined boundaries for each color

What is the main difference between textile printing and textile dyeing?

  • Textile printing is more expensive than textile dyeing
  • Textile dyeing creates patterns while textile printing creates a solid color
  • Textile printing creates a localized coloration while textile dyeing creates a bulk coloration (correct)
  • Textile printing uses a paste while textile dyeing uses a solution

What is fabric shrinkage controlled by in the context of textile printing?

  • Pre-treatment with chemicals
  • Using specific printing inks
  • Heat setting (correct)
  • Special fabric weaves

Why is it essential to have crease-free fabric before printing?

<p>Creases can create areas that don't receive the printed design. (D)</p> Signup and view all the answers

In the context of textile printing, what is meant by "functional"?

<p>Creating a fabric with specific properties beyond aesthetics (B)</p> Signup and view all the answers

Which of these is NOT a characteristic of textile dyeing?

<p>Well defined boundaries for each color (C)</p> Signup and view all the answers

What impact does excessive fabric shrinkage during printing have?

<p>The printed design appears distorted. (B)</p> Signup and view all the answers

Which of the following is a key process for achieving dimensional stability in fabric?

<p>Heat setting (C)</p> Signup and view all the answers

What is the exception to the general rule of applying colorant in paste form for textile printing?

<p>Inkjet printing (C)</p> Signup and view all the answers

What is the role of heat setting in fabric preparation for printing?

<p>To reduce shrinkage and achieve dimensional stability. (C)</p> Signup and view all the answers

What is an example of a functional characteristic that can be achieved using textile printing?

<p>Making a fabric water-resistant (C)</p> Signup and view all the answers

Where are creases commonly found in fabric, according to the given content?

<p>From bleaching and machine faults. (B)</p> Signup and view all the answers

How could textile printing be used to make a fabric "functional"?

<p>Printing a pattern that makes the fabric electrically conductive (E)</p> Signup and view all the answers

Which of the following is NOT a common method used for textile printing?

<p>Solvent printing (D)</p> Signup and view all the answers

Which type of printing necessitates special chemical treatments prior to the process?

<p>Digital printing (D)</p> Signup and view all the answers

What is the primary goal of preparing the fabric for printing?

<p>To avoid flaws and inconsistencies in the final print. (D)</p> Signup and view all the answers

Which of the following courses is MOST relevant to TE-424 Textile Printing?

<p>TE-326 Textile Dyeing (A)</p> Signup and view all the answers

Which of the following statements is TRUE regarding TE-424 Textile Printing ?

<p>Some topics are sub-topics of others (A)</p> Signup and view all the answers

Which of the following CLOs is NOT mentioned in the content provided?

<p>Develop novel textile printing techniques (A)</p> Signup and view all the answers

What is the main focus of TE-424 Textile Printing, according to the content provided?

<p>Textile Printing Processes (D)</p> Signup and view all the answers

Which of the following concepts from TE-205 Pretreatment of Textiles is directly applicable to TE-424 Textile Printing?

<p>Fabric Scouring (B)</p> Signup and view all the answers

What is the relationship between TE-326 Textile Dyeing and TE-424 Textile Printing, as described in the content?

<p>TE-424 is essentially a specialized aspect of TE-326 (A)</p> Signup and view all the answers

Which of the following is NOT a stated Learning Outcome (CLO) for the TE-424 Textile Printing course?

<p>Develop new textile printing machines (C)</p> Signup and view all the answers

Which of the following CLOs aligns directly with the statement “Printing is essentially “localized dyeing”?”

<p>Demonstrate a thorough knowledge of pre-treatment &amp; post-treatment processes. (C)</p> Signup and view all the answers

What is the primary purpose of desizing and scouring in fabric preparation for printing?

<p>To remove impurities that hinder ink absorption and penetration (D)</p> Signup and view all the answers

Why is bleaching an important step in fabric preparation for printing?

<p>To enhance whiteness and improve ink absorption (C)</p> Signup and view all the answers

What is the main benefit of mercerization in fabric preparation for printing?

<p>Improved dimensional stability and reduced hairiness (B)</p> Signup and view all the answers

Which of the following is NOT a specific fabric requirement for printing?

<p>Uniform fabric weight (B)</p> Signup and view all the answers

What is the main purpose of pretreatment processes like desizing and scouring in fabric preparation for printing?

<p>To create a smooth and even surface for printing (C)</p> Signup and view all the answers

Which of the following fabric requirements for printing is MOST important for ensuring a consistent print?

<p>Free from surface or sub-surface impurities (D)</p> Signup and view all the answers

Which of the following pretreatment methods is BEST suited for improving the whiteness and ink absorbency of a fabric?

<p>Bleaching (D)</p> Signup and view all the answers

Why is it important to have a crease-free fabric surface before printing?

<p>To ensure a smooth and even application of ink (A)</p> Signup and view all the answers

What type of distortion refers to a curved profile of the weft yarn?

<p>Bow (A)</p> Signup and view all the answers

What type of distortion can be removed?

<p>Both B and C (B)</p> Signup and view all the answers

What is the primary cause of weft distortions?

<p>Stresses applied during wet processing (C)</p> Signup and view all the answers

Why is it important to remove weft distortions before printing?

<p>To avoid distortions in the printed design (D)</p> Signup and view all the answers

Which of the following processes can apply stress to a fabric and potentially cause weft distortions?

<p>All of the above (D)</p> Signup and view all the answers

What is the main reason for the importance of correct weft layout in printing?

<p>To ensure the printed image is sharp and clear (D)</p> Signup and view all the answers

What is the relationship between weft distortions and the printed design?

<p>Weft distortions can cause the printed design to appear uneven or stretched (C)</p> Signup and view all the answers

Which of the following statements about weft distortions is NOT true?

<p>Weft distortions can be removed in every case (D)</p> Signup and view all the answers

What are the learning outcomes for Lecture # 1a?

<p>Understanding the basics of printing in general and its application on various substrates. (D)</p> Signup and view all the answers

What substrates are specifically mentioned for printing in general, besides fabric?

<p>Paper, Plastics, Metal, Glass (B)</p> Signup and view all the answers

What is the main topic of Lecture # 1a?

<p>General overview of printing and the factors to be considered (D)</p> Signup and view all the answers

Based on the information provided, what is the main focus of the entire "TE-424 Textile Printing" course?

<p>The principles and techniques involved in printing textiles. (C)</p> Signup and view all the answers

What does this phrase 'printing a substrate' refer to?

<p>The process of printing on a given surface like paper, fabric, or plastic. (A)</p> Signup and view all the answers

What is the significance of the 'factors to be considered' mentioned in the lecture title?

<p>They are the various aspects that influence the success of a print on a substrate. (C)</p> Signup and view all the answers

What is the primary focus of Lecture # 1?

<p>An introduction to the general principles of printing, with fabric printing being the main focus. (D)</p> Signup and view all the answers

Where does the term 'of course' in the phrase 'Printing in general – Fabric (of course)' suggest that fabric printing is the main focus of this lecture?

<p>It implies that fabric printing is the end goal of understanding the general principles of printing. (D)</p> Signup and view all the answers

Flashcards

Weft in weaving

Yarn inserted perpendicular to the warp yarn during weaving.

Pulling forces

Stresses applied on fabric after its formation, especially during wet processing.

Bow distortion

Curved profile of weft caused by stresses in the fabric.

Skew distortion

Weft is straight but not at a 90º angle to the warp.

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Types of weft distortions

Common distortions include bow and skew; some can be removed while others cannot.

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Compound distortions

Complex weft distortions that cannot be removed effectively.

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Effect of weft distortions on printing

Distortions lead to deviations in printed designs if not corrected.

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Post-printing distortion

Weft distortions occurring after printing also distort the design.

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Filament

A long continuous fiber used in textiles.

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Hydrophilic Fiber

Fibers that absorb water easily.

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Hydrophobic Fiber

Fibers that repel water and do not absorb it.

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Dimensional Stability

The ability of fabric to maintain its original dimensions after washing.

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Desizing

The process of removing sizing materials from fabric before printing.

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Scouring

The process of cleaning fabric to remove impurities.

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Mercerization

A chemical treatment to improve fabric qualities like whiteness and strength.

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Bleaching

The process of whitening the fabric to enhance absorption and print visibility.

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Controlled Fabric Shrinkage

Managing the reduction in fabric size before printing to prevent faults.

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Heat Setting

Process to control shrinkage by raising fabric temperature to relax polymer chains.

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Stop Creases

Eliminate creases to ensure even printing, as creases block ink application.

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Permanent Creases

Creases that become fixed in the fabric from improper processing, affecting printing.

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Printing Machine Crease Removal

Mechanical methods on printing machines to eliminate creases before fabric hits the printer.

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Inkjet Printing Requirements

Specific chemicals needed prior to inkjet printing for better adhesion and quality.

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Auxiliaries in Inkjet Printing

Chemicals used to enhance ink performance and fabric compatibility in inkjet printing.

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Overview of Printing

An introduction to various printing methods and their uses.

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Factors in Printing

Various elements to consider that affect print quality on substrates.

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Printing on Substrates

The different materials that can be printed on, including paper, plastic, and fabric.

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Fabric Characteristics

Traits of fabric that influence how it interacts with printing processes.

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Preparing Fabric for Printing

Steps necessary to make fabric ready for the printing process.

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Printing Types

Categories of printing methods such as flexography, screen, or digital printing.

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Textile Engineering

The branch of engineering that focuses on the design and creation of textiles.

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Significance of Printing Factors

Importance of understanding various factors that influence the final print outcome.

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Localized Dyeing

Printing is essentially a type of localized dyeing process applied to textiles.

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Pre-treatment

Initial processes applied to textiles before printing, ensuring better adherence of dyes.

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Post-treatment

Processes applied after printing to enhance color fastness and texture.

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Printing Faults

Defects that occur during the textile printing process, affecting quality.

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Textile Printing Machines

Machines used specifically for applying prints and designs onto fabrics.

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Course Learning Outcomes (CLO)

Objectives that outline what students should achieve by the end of the course.

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Technical Aspects

The mechanics and technology behind operating textile printing machinery.

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Textile Chemistry

Study of chemical processes and substances related to textiles, foundational for printing.

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Textile Printing

The process of applying localized coloration to fabrics.

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Textile Dyeing

Bulk coloration of a material where color is uniform throughout.

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Localized Coloration

Coloring technique where specific areas of the fabric receive different colors.

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Bulk Coloration

A single color applied throughout the entire material without boundaries.

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Colorant Paste

Thick mixture of colorant used in textile printing, especially in traditional methods.

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Inkjet Printing

A method of textile printing using a liquid ink that absorbs uniformly into the substrate.

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Functional Textiles

Fabrics that have been modified for specific functions like conductivity.

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Textile Substrates

The base material or fabric that holds the color applied during printing or dyeing.

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Study Notes

Course Information

  • Course code: TE-424
  • Course name: Textile Printing
  • Instructor: Engr. Danyal Rashid Khan
  • Department: Textile Engineering
  • Institution: NEDUET
  • TE-326 Textile Dyeing is the most relevant course, as printing is essentially localized dyeing.
  • Concepts from TE 205 – Pretreatment of Textiles are directly applicable.
  • TE-111 Textile Chemistry is also helpful, though to a lesser extent.

Course Topics and Weightage

  • All listed topics do not have equal weightage.
  • Some topics will be sub-topics of others.
  • The order of topics may vary.
  • The course is not about textile designing.

Course Learning Outcomes

  • CLO 1: Demonstrate a thorough knowledge of pre-treatment and post-treatment processes, machine workings, controls, and technical aspects of textile printing machines. (Taxonomy level C3, PLO 1)
  • CLO 2: Identify causes of printing faults and synthesize solutions based on logical application of acquired understanding of processes and machines. (Taxonomy level C5, PLO 2)
  • CLO 3: Execute screen printing of a woven fabric while ensuring even ink distribution, correct registration, and uniform shade. (Taxonomy level P3, PLO 4)

Course Structure

  • Theory: 40 marks (Sessionals) + 60 marks (Final Exam)
    • Midterm: 20 marks
    • Complex Engineering Problem (CEP): 10 marks
    • Three sessional tests (03): 5 marks each (best of two used for 10 marks)
  • Practical: 50 marks
    • Psychomotor Analysis: 25 marks
    • Lab manual submission and attendance: 5 marks
    • Practical Vivas: 20 marks

Reference Materials

  • "Textile Printing" (2nd or 3rd Edition), edited by Leslie W.C. Miles.
  • "Digital printing of textiles", edited by H. Ujiie.
  • Other course materials provided throughout the duration.

Course Delivery

  • Lecture 1: Introductory lecture series covering general overview of printing including factors to be considered, fabric characteristics and fabric preparation.
  • Lecture 2: Fabric Preparation for printing - In-depth study of important preparatory processes and associated machinery.
  • Lecture 3: Methods of Textile Printing - Block and roller printing, detailing Screen-Printing processes and Inkjet Printing.
  • Lecture 4: Printing machines, including flat screen-printing machines, rotary printing machines, rotary screen engraving detailed, CAD/CAM inkjet printing machines.
  • Lecture 5: Design & Screen preparation for printing - Types of designs, screen making (engraving), design engraving methods for rotary and flat screens.
  • Lecture 6: Screen printing inks - Formulation, binders, thickeners, auxiliaries, application aspects for pigment & dyestuff printing.
  • Lecture 7: Inkjet printing - Pre-treatment, inks and machine considerations.
  • Lecture 8: Different printing styles (direct, discharge, resist).
  • Lecture 9: Fixation of prints (processes and machines).
  • Subsequent Lectures: Textile Printing and textile substrate characteristics, and a comprehensive overview of printing.

Additional Important Dates

  • Quiz 1 (MCQs): Week #5 - 5 marks
  • Midterm: Week #8 - 20 marks
  • Complex Engineering Problem (CEP) submission: Week #10 - 10 marks
  • Quiz 2 (MCQs): Week #12 - 5 marks

Additional Reference Materials

  • Numerous video links provided for additional insights into various printing methods, specifically those related to currency notes, printing on plastic, newspapers, and tin cans.

Additional Lecture Information

  • Lecture 1A: General overview of printing; factors to be considered.
    • Discusses printing in general, considering factors like substrates (paper, plastic, metal, glass, fabric), speed, cost, color brilliance, resolution, and retention.
    • Activities include comparing the print quality of different substrates and asking if comparable color brilliance can be achieved on textile.
  • Lecture 1B: Textile Printing and textile substrate characteristics, discussing fundamental properties of textiles related to printing.
    • Describes differences between localized coloration and bulk coloration in printing.
    • Explains how textile printing can go beyond aesthetics and includes functionality.
  • Lecture 1C: Fabric requirements for printing in terms of characteristics such as: surface roughness, absorbency, porosity, flexibility, and stability and important factors for preparing fabric for printing.
    • Discusses processes such as desizing, scouring, bleaching, and mercerisation.
    • Details of necessary corrections like avoiding weft distortions (bow and skew), controlling fabric shrinkage prior to printing, ensuring the fabric's cleanliness (no dust or loose threads). Also explains how to check the fabric using different tests for absorbency, shrinkage and whiteness before printing.
    • Examines the importance of PH and conductivity of fabric before printing. Discusses the significance of controlled fabric shrinkage before printing.

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TE-424 Textile Printing Lecture Notes PDF

Description

Test your knowledge on textile printing processes and the technical aspects of machines used in this field. This quiz covers essential concepts from pre-treatment to post-treatment processes. Perfect for students enrolled in TE-424 at NEDUET.

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