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  • Course Introduction

    Wet Processing IV is a major course especially for the students who are willing to study Wet Processing as their advanced stream. This course is designed for the students with denim fabric identification, fabric inspection, different types of wet and dry processes of garments washing, garments dyeing, tinting and garments testing.

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    Course Objectives:

    This course is to enable the students to learn about advanced pretreatment processes such as solvent scouring, bio-scouring processes, and assessing the effects of scouring, bleaching and mercerizing process, essential mechanical and chemical finishing of textiles such as drying, stentering, compacting, calendaring, sueding, optical brightening etc., innovative printing techniques, and for identifying the common faults of dyeing and printing.


  • Assignment



    Assignment Topic:

    Regulations:
    # The Assignment should be submitted hard copy first on or before 24/09/2024.
    # For late submission there will be negative marking.
    # Assignment can be submitted in both printed or hand written format.
    # There is no limit of pages (but should not provide a thesis)
    # It Should be submitted by each and every single student by him/herself.
    # Any kinds of copy from other classmate's assignment would cause negative marking.
    # Every single student must submit the soft copy (.pdf version) of his/her assignment on or before 15/10/2024 on BLC.  only soft copy submission will not be considered.
    # Late submission on BLC will also cause negative marking.
    # For online soft copy submission, students are must follow the criteria:
    File name should be (Student ID + Student Name)

    DeadLine: 24/09/2024

    • assign icon
      Assignment Submission
      Students must
      Mark as done

      Everyone Please Submit Your Assignment (Soft Copy: .pdf) Here on or Before 15/10/2024.

  • Presentation



    Instruction: 

    • Submit your presentation as per the instruction given in class. 
    • Upload your Presentation here only.


    Last Date of Submission: December 05, 2024

  • Technology of Dyeing

    Textile Dyeing

    Objectives : 

      1. To learn about the concepts and fundamentals of Textile dyeing. 
      2. To learn about color theories.
      3. To learn about the color measurements as well as know about spectrophotometer.
      4. To learn about color fastness.
      5. To learn the blended dyeing procedure.

    Outcomes :

    After completing this lectures,

      1. Students will able to learn about the blended dyeing process and also know how to apply it at industrially.
      2. Students will able to know about several color theories and their applications in textile wet processing. 
      3. Students will able to know about the spectrophotometer and how can we use it for color measurement.
      4. Students will able to know about color fastness and its assessment procedure.

  • Wet Preparatory Processes



    Objectives : 

      1. To learn about the concepts and fundamentals of Textile pretreatment. 
      2. To learn about special scouring process, estimation of scouring process.
      3. To Learn about the bleaching and mercerization effects and their estimations.
      4. To learn about faults & damage in bleaching.

    Outcomes :

    After completing this lectures-

      1. Students will Learn about the pretreatment process of textile wet processing.
      2. Students will know about the special scouring process and its estimation. 
      3. Students will know about the bleaching and mercerization effects and their estimations.
      4. Students will know about faults & damage in bleaching.

  • Textile Dyeing Machineries



    Learning Objectives

    • The learning objectives of this unit are to list the machines used in dyeing.
    Objectives of Dyeing machines:

    1. Understand Dyeing Fundamentals: Gain knowledge of the principles and chemistry behind textile dyeing, including types of dyes and their interactions with fibers.

    2. Machine Operation: Learn the operational procedures for various textile dyeing machines, including pre-treatment, dyeing, and post-treatment processes.

    3. Technical Skills Development: Develop practical skills in handling and troubleshooting dyeing machinery to ensure optimal performance and efficiency.

    4. Process Optimization: Analyze and optimize dyeing processes for quality and sustainability, including the reduction of water and energy usage.

    5. Safety and Compliance: Understand safety protocols and environmental regulations related to dyeing processes and machine operation.

    6. Quality Control: Learn techniques for monitoring dye quality and consistency, including color matching and fastness testing.

    7. Emerging Technologies: Explore advancements in dyeing technology, such as digital printing and eco-friendly alternatives.

    8. Project Management: Gain skills in planning and managing dyeing projects, including budgeting and resource allocation.

    9. Industry Standards: Familiarize with industry standards and certifications related to textile dyeing and machinery.

    10. Problem-Solving Skills: Develop critical thinking and problem-solving skills to address common issues in dyeing operations.

    These objectives can be tailored further based on the specific focus and level of the course!


    course outcomes

    1. Proficient Operation: Demonstrate the ability to operate various types of textile dyeing machines effectively and safely.

    2. Dyeing Process Knowledge: Explain the principles and processes involved in textile dyeing, including dye selection and application techniques.

    3. Troubleshooting Skills: Identify and resolve common operational issues and malfunctions in dyeing machinery.

    4. Process Optimization: Implement strategies to optimize dyeing processes for quality, efficiency, and sustainability.

    5. Quality Assessment: Conduct quality control tests to assess dye quality, including colorfastness and uniformity.

    6. Safety Compliance: Adhere to safety standards and environmental regulations during dyeing operations.

    7. Technological Awareness: Understand and discuss current trends and advancements in textile dyeing technologies.

    8. Project Management: Plan and execute dyeing projects, effectively managing time, resources, and budgets.

    9. Industry Standards Knowledge: Recognize and apply relevant industry standards and certifications in dyeing processes.

    10. Critical Thinking: Utilize critical thinking skills to evaluate and improve dyeing processes and outcomes.


    • resource icon
      Textile Dyeing Machineries File
      Students must
      Mark as done
    • url icon
      Cold Pad Batch (CPB) Dyeing Process - Step by Step explanation URL
      Students must
      Mark as done

      Cold Pad Batch (CPB) dyeing is a dyeing process used primarily for dyeing cellulosic fibers like cotton, viscose, and their blends. It's a continuous and efficient dyeing method that is carried out at room temperature (or slightly elevated temperatures) without the need for high temperatures or pressure. CPB dyeing is known for its reduced energy and water consumption compared to traditional dyeing methods.

  • Midterm Examination

    Syllabus: Introduction to Blend Dyeing

    Total Marks: 25

    Time: 1:30 pm to 4:00 pm (Any 2 hours)


  • Chapter-5: Technology of Finishing

    Objectives : 

      1. To learn about the concepts and fundamentals of Textile finishing. 
      2. To know about the de watering machine.
      3. To know about the low-wet pick up finishing and its importance.
      4. To learn about some mechanical finishing process.

    Outcomes :

    After completing this lectures,

      1. Students will learn about the finishing procedure of textile wet processing.
      2. Students will know about how to remove the excess water from fabric after dyeing.
      3. Students will know about different finishing machinery and their specifications.
      4. Students will know about the mechanical finishing procedure such as Calendaring(Embossing), Raising, Sanforizing.

    A Video on Calendering:


    • resource icon
      Antimicrobial Textile Finishing File
    • resource icon
      Textile Finishing Machineries File
      Students must
      Mark as done

      In textile manufacturing, finishing refers to the processes that convert the woven or knitted cloth into a usable material and more specifically to any process performed after dyeing the yarn or fabric to improve the look, performance, or "hand" (feel) of the finish textile or clothing.


  • Denim Dyeing

    Course Objectives:

    1. Understanding Denim Fabric and Its Characteristics
    2. Introduction to Denim Dyeing Techniques
    3. Mastering Indigo Dyeing
    4. Dyeing Equipment and Machinery
    5. Achieving Color Consistency and Shade Matching
    6. Post-Dyeing Treatments
    7. Environmental and Sustainability Considerations
    8. Quality Control and Troubleshooting
    9. Innovations and Trends in Denim Dyeing
    10. Health and Safety in Dyeing Processes
    11. Practical Applications and Hands-On Training

    Course Outcomes:

    Students will be able to select and apply appropriate dyeing techniques for denim fabrics, including indigo, sulfur, and reactive dyeing methods.


    • resource icon
      Denim Dyeing File
      Students must
      Mark as done

      ‘Serge de Nimes’ is a French word from which ‘Denim’ is derived. It refers to the city of Nimes.


    • url icon
      Advanced technology in indigo slasher dyeing URL
      Students must
      Mark as done

      KARL MAYER’s future- and customer-oriented indigo dyeing machine is an efficient tool for the production of uniformly dyed indigo warps made at the highest econonomical level and produced with an environmentally conscious process.

  • Chapter-4: Technology of Printing

    Objectives : 

      1. To learn about the concepts and fundamentals of Textile printing. 
      2. To know about the special printing procedures.
      3. To learn about the printing faults and their remedies. 

    Outcomes :

    After completing this lectures,

      1. Students will learn about the special printing procedure as well as burnout, inkjet, transfer and flock printing method.
      2. Students will know about their application procedure. 
      3. Students will know about the thickener, binder and fixer.
      4. Students will know about the printing faults and how we can solve this problem.

    A Video on Transfer Printing:


  • Class Test-3

  • Final Examination

    Time: Any 140 minutes from 9:00 am to 12:30 pm
    Total Marks: 40
    Instruction: Please follow the instruction very carefully given in the class.