Principles of Weaving detailed Syllabus for Textile Manufacturers (TX), I – scheme has been taken from the MSBTE official website and presented for the diploma students. For Subject Code, Subject Name, Lectures, Tutorial, Practical/Drawing, Credits, Theory (Max & Min) Marks, Practical (Max & Min) Marks, Total Marks, and other information, do visit full semester subjects post given below.
For all other Diploma in Textile Manufacturers (TX) Syllabus for 4th Sem I – Scheme MSBTE, do visit Diploma in Textile Manufacturers (TX) Syllabus for 4th Sem I – Scheme MSBTE Subjects. The detailed Syllabus for principles of weaving is as follows.
Rationale:
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Competency:
The aim of this course is to help the student to attain the following industry identified competency through various teaching learning experiences:
- Weave different types of fabrics using different types of yarns and equipment.
Course Outcomes:
The theory, practical experiences and relevant soft skills associated with this course are to be taught and implemented, so that the student demonstrates the following industry oriented COs associated with the above mentioned competency:
- Prepare pirn (weft bobbin) on pirn winding machines.
- Draw warp threads through heald shafts by constructing drafts of fabric designs.
- Adjust different settings of primary motions for various qualities of fabrics.
- Maintain the secondary motions for obtaining required picks per inch for fabrics.
- Maintain auxiliary motion for weaving defect free fabric.
- Maintain loom mechanisms and weaving accessories for producing defect free fabrics.
Suggested Exercises:
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Instruments Required:
The major equipment with broad specification mentioned here will usher in uniformity in conduct of experiments, as well as aid to procure equipment by authorities concerned.
Equipment/Instruments/Other resources name with Broad Specifications
- Ordinary pirn winding machine with 12 spindle
- Automatic pirn winding machine with 10 spindle
- Miniature Drawing in frame with heald frames and reed, weavers beam
- Plain Power looms with over pick mechanism 60 inch
- Plain power looms with cone under-pick mechanism 60 inch
- Plain power looms with side under-pick mechanism 60 inch
- Different fabric samples with various fabric defects, pick glass,
Unit 1
Pirn Winding
Total Teaching Hours – 08
Distribution of Theory Marks
R Level – 02
U Level – 02
A Level – 04
Total Marks – 08
Unit Outcomes (UOs) (in cognitive domain)
- Describe with sketches the passage of yarn through different parts of the given type of pirn winding machine.
- Describe with sketches the functions of the given parts of pirn winding machine.
- Diagnose the reason for the given pirn-defect and the remedies therein.
- Estimate speeds, efficiency and production for the given situation.
Topics and Sub-topics
- Functions and need of pirn winding machines
- Passage of yarn on pirn winding machine.
- Functions of various parts of automatic pirn winding machine.
- Requirements of pirns for automatic looms.
- Built of pirn-defects and remedies for it
- Calculation of pirn winding speed and production.
Unit 2
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Unit 3
Shedding, picking and beat-up of Power Loom
Total Teaching Hours – 16
Distribution of Theory Marks
R Level – 04
U Level – 08
A Level – 10
Total Marks – 22
Unit Outcomes (UOs) (in cognitive domain)
- Describe the material flow for given loom with sketch.
- Describe with sketches the functions of the given type of motions with reference to passage of warp on loom.
- Compare with sketches the limitations and merits of given type of cam shedding mechanism with justification.
- Compare with sketches the the merits and limitations of given types of sheds with justification.
- Describe the working of tappet shedding mechanism with sketch.
- Determine timing and settings of the tappet shedding mechanism for the given situation.
- Explain with sketches the working of given type of picking mechanism.
- Determine timing and settings for given picking mechanism.
- Explain with sketches the working of beat-up mechanism.
Topics and Sub-topics
- Plain power loom- Passage of warp, objectives of primary, secondary and auxiliary motions.
- Shedding Motions-Functions and Need, concept of positive and negative shedding mechanism,
- Cam shedding-Tappet, conjugate cam, grooved cam shedding, merits and limits of each cam shedding,
- Tappet shedding- working, functions of all parts, timing cycle and setting.
- Sheds-Bottom, closed, semi open, open shed, merits and limits of each shed characteristics of good shed, shedding time cycle. Early and late shedding.
- Construction of shedding tappet for plain weave.
- Picking Motions: – Object, types of picking mechanisms -over-pick and under-pick mechanisms. Over Picking Mechanism – working of cone over picking mechanism, function of all parts, timing and settings. Under Picking Mechanism – working cone under picking mechanism, functions of all parts, timing and settings.
- Beat-up motions – object, working of crank beat-up mechanism, functions of – sley, crank and crank arm, Sley eccentricity, importance and calculations.
- Drive arrangement for bottom, crank shaft.
Unit 4
Take up and Let off mechanism of power loom
Total Teaching Hours – 10
Distribution of Theory Marks
R Level – 02
U Level – 02
A Level – 06
Total Marks – 10
Unit Outcomes (UOs) (in cognitive domain)
- Describe with sketches the functions of secondary motions.
- Describe the working of given lake up mechanism with sketch.
- Calculate the dividend of seven wheel mechanism to decide required pick wheel for a given fabric.
- Describe with sketches the the working mechanism of given type of let off motion.
Topics and Sub-topics
- Secondary motions-need and Functions
- Take-Up Motion – object, types, working of seven wheel take-up motion, settings and timings of the mechanism, calculation of dividend, cloth wind-up device.
- Let-off Motion – Functions, types of Let off motions -Negative Let off motion, Positive Let off motion, Working of Negative Let-off motions, oscillating back rest
Unit 5
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Unit 6
Fabric Defects
Total Teaching Hours – 08
Distribution of Theory Marks
R Level – 02
U Level – 02
A Level – 06
Total Marks – 10
Unit Outcomes (UOs) (in cognitive domain)
- Describe the given fabric defect with sketch.
- Distinguish the given defect into relevant categories.
- Describe the procedure to rectify the given fabric defect with relevant solution.
- Describe with sketches the processes of setting of the given part of the shuttle box for proper functioning of picking mechanism.
Topics and Sub-topics
- Classification of woven fabric defects
- Warp wise defect- description, demonstration, causes and remedies for Missing end, float, double end, broken end, size patches, wrong drawing-in,
- Weft wise defect- description, demonstration, causes and remedies for double pick, miss pick, weft bars, lashing in, short pick, snarl.
- Machine defect: Let off marks, starting mark, Thick place, Thin Place, Reedy fabric or fabric with poor cover, all types of bad selvedges, temple marks, emery roller marks, stains, gout.
Note: To attain the COs and competency, above listed UOs need to be undertaken to achieve the Application Level and above of Bloom’s Cognitive Domain Taxonomy’.
Note:
Legends: R=Remember, U=Uncierstand, A=Apply and above (Blooms Revised taxonomy)
Note: This specification table provides general guidelines to assist student for their learning and to teachers to teach and assess students with respect to attainment of UOs. The actual distribution of marks at different taxonomy levels (of R, U and A) in the question paper may vary from above table.
Suggested Student Activities:
Other than the classroom and laboratory learning, following are the suggested student-related co-curricular activities which can be undertaken to accelerate the attainment of the various outcomes in this course: Students should conduct following activities in group and prepare lepoils of abouL 5 pages for each activity, also collect/record physical evidences for their (students) portfolio which will be useful for their placement interviews:
- Draw diagrams of bare pirns of different looms (power loom, auto loom with mechanical feeler, auto loom with electrical feeler and auto loom with photo electric feeler)
- Students should collect different fabric samples available in market and collect information about design, draft, peg-plan and denting plan. They should determine reed and heald count required for each sample.
- Students should make a loom timings circle of card board showing timings of shedding, picking and beat up on it.
- Draw diagram of various picking mechanisms on a card board. Draw diagrams of various parts, write function of each part, elaborate about how picking force can be changed in each mechanism.
- Draw diagram of beat up mechanism of power loom on a card board and label the part.
- Collect information about various take up and let off mechanisms used on power loom, auto loom and shuttle less looms on internet in the form of photographs, videos and prepare a Power point presentation.
Suggested Special Instructional Strategies:
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Suggested Micro-Projects
Only one micro-project is planned to be undertaken by a student that needs to be assigned to him/her in the beginning of the semester. In the first four semesters, the micro-project are group-based. However, in the fifth and sixth semesters, it should be preferably be individually undertaken to build up the skill and confidence in every student to become problem solver so that s/he contributes to the projects of the industry. In special situations where groups have to be formed for micro-projects, the number of students in the group should not exceed three.
The micro-project could be industry application based, internet-based, workshop-based, laboratory-based or field-based. Each micro-project should encompass two or more COs which are in fact, an integration of PrOs, UOs and ADOs. Each student will have to maintain dated work diary consisting of individual contribution in the project work and give a seminar presentation of it before submission. The total duration of the micro-project should not be less than 16 (sixteen) student engagement hours during the course. The student ought to submit micro-project by the end of the semester to develop the industry oriented COs.
A suggestive list of micro-projects are given here. Similar micro-projects could be added by the concerned faculty:
- Pirn winding – Students will build five different pirns by using different traverse length and traverse ratio. They will observe the performance of the pirns during weaving and record the performance for submission. They will make a Power point presentation on this study and present at the end of semester.
- Drawing-in- Develop various fabric samples of basic weaves such as plain, twill and sateen. They will draw ends of the warp sheet as per the selected draft, and peg-plan to obtain required basic weave on table loom. Prepare a sample folder along with the details of design, draft and peg-plan of various weaves.
- Primary motions on power Loom- Construct the plain, 2 up 1 down twill weave tappet cam profile and picking nose on drawing in sheet by considering all shedding and picking parameters.
- Primary motions on power Loom -Measure the length of crank arm, radius of crank and width of loom of various looms available in workshop and Prepare a table for the sley eccentricity. Interpret the result by establishing relationship between sley eccentricity and width of loom.
- Secondary motions: Students will draw the seven wheel take up mechanism. They will produce fabric samples of different PPI by changing the combination of slandered and change wheel. They will prepare relevant chart indicating effect of changing wheels on fabric parameters (PPI) with sample.
- Auxiliary motions- Students will collect schematic diagrams, photographs, videos, animation videos and prepare a booklet having description of about all auxiliary motions.
- Fabric defects – Students will prepare chart by collecting various defective fabric swatches and write causes and remedies of the same.
Suggested Learning Resources:
- Weaving; Conversion of Yarns to Fabric Lord, P.R; Mahamed, M.H. Woodhead Publication,USA,1982 ISBN:9781855734838
- Principle Of Weaving Marks, R; Robbinson, A.T.S. The Textile Institute, Manchester, 1976 ISBN: 0-900739258
- Weaving: Machines, Mechanisms, Management Talukdar, M.K,: Ajgaonkar, D.B,; Sriramulu, P.K. Mahajan Publisher, Ahmedabad. 1998. ISBN:81-85401-16-0
- Fancy Weaving Mechanisms K.T.Aswani Mahajan Book Distributors, Ahmedabad , 1990, ISBN 8185401012,
- Fundamentals of yam winding Karanne,M.K A woodhead Publishing India Title, 2013,ISBN:9781782420682
Software/ Learning Websites
For the complete Syllabus, results, class timetable, and many other features kindly download the iStudy App
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For detail Syllabus of all other subjects of Textile Manufacturers, I – scheme do visit Textile Manufacturers 4th Sem Syllabus for I – scheme.
For all Textile Manufacturers results, visit MSBTE Textile Manufacturers all semester results direct links.