Quality Control in Chemical Processing
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Follow on Instagram for UpdatesQuality Control in Chemical Processing Syllabus — Unit-wise Content
The official GTU curriculum for Quality Control in Chemical Processing (subject code BE05029051) as prescribed for Textile Tech. · Semester 5 divides the course into 5 units, covering 43 listed topics. The unit-wise breakdown below is read from the GTU syllabus document for this subject code, so you can check what the course actually covers before deciding which papers to attempt.
Download the official syllabus PDF (BE05029051)Unit 1 Introduction to Quality and Process Control
- Concepts of Quality Control (QC) and Quality Assurance (QA) in textile wet processing
- Flowcharts of process control checkpoints from grey fabric inspection to finished goods
- Role of online vs. offline testing
- Introduction to standard testing bodies (ISO
Unit 2 Process Control & Evaluation of Preparatory Processes
- Singeing & Desizing: Control of flame intensity and fabric speed
- Evaluation of desizing efficiency using the Tegewa scale
- Scouring: Control of alkali concentration
- time, and temperature in continuous scouring (J-Box)
- Evaluation of absorbency (drop test
- wicking test) and residual wax content
- Bleaching: Control of pH, stabilizer concentration, and temperature in H2O2 bleaching
- Assessment of Whiteness/Yellowness index and chemical degradation (fluidity/copper number test)
- Mercerization: Control of caustic soda strength
- tension, and temperature
- Evaluation of mercerization efficiency via Barium Activity Number (BAN)
Unit 3 Color Quality Control and Dyeing Diagnostics
- Instrumental Color Evaluation: Introduction to Spectrophotometers
- CIE Lab color space, and total color difference Delta- E pass/fail concepts
- Introduction to Computer Color Matching (CCM) and K/S curves
- Dyeing Process Control: Control of dye liquor ratio
- exhausting agents (salts)
- fixing agents (alkalis)
- temperature profiles, and machine parameters (Jigger
- Padding Mangle)
- Fault Analysis: Identification
- root causes, and corrective measures for common dyeing faults (un-levelness
- barre effects)
Unit 4 Evaluation of Printing and Functional Finishes
- Printing Quality: Control of print paste viscosity
- squeegee pressure, and curing/steaming parameters
- Evaluation of sharpness
- registration defects, and paste penetration
- Testing of Functional Finishes: Standard evaluation methods for the finishing
- Crease recovery angle (CRA) for crease-resistant finishes
- Spray rating and hydrostatic pressure test for water-repellent/waterproof fabrics
- Program Name: Engineering Level: UG Branch: Textile Technology Subject Code: BE05029051 Subject Name: Quality Control in Chemical Processing Flammability testing (vertical flame test) for flame-proof fabrics
- Basic performance evaluation of silicone softeners
- anti-static, and soil- release finishes
Unit 5 Color Fastness Testing and Eco-Compliance
- Evaluation mechanisms and grading using Grey Scales for Change in Color and Staining : Color fastness to washing (Laundrometer)
- rubbing/crockers (Crockmeter)
- perspiration (Perspirations tester), and light (Xenon arc)
- Color fastness to hot pressing and sublimation
- Eco-Parameters: Overview of restricted substances in chemical processing (banned azo dyes
- formaldehyde limits
- heavy metals) and compliance basics (OEKO-TEX
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