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1 Prepared By : Mazadul Hasan sheshir ID: 2010000400008 13 th Batch (session 2009-2013) Department : Wet Processing Technology Email: mazadulhasan@yahoo.com Blog : www. Textilelab.blogspot.com (visit) Southeast University Department Of Textile Engineering I/A 251,252 Tejgaon Dhaka Bangladesh Prepared By : • • • • • 4 ! !" #!$ !%&$ This compeon is at macro and micro level. Micro may be within a country and macro means compeon from industry world over. '() (( ( %%$ *!%% +$% $ 5 ,$ - $ .$ /! $ 0$ 1 $ 2$ )$ 3$ !$ 4$ 56)$ 7$ % 8$ 9:&%$ 6 Conforming to specicaon is quality. Quality can also mean, meeng or exceeding, customer’s expectaon all the me. 7 Classification of Quality - 1 8 !"#$"% &'&('&() $& *+&+) ,&) $(-) '&('&() +./) $&+&() ') '//*&') ' '0&1) !&') (/+'&*2) 9 3', 10 Systematic-Systematic Organization Scrubbing clean Self-Discipline- Control Customer Expectations Sorting Visual Placement Standardizing Control Improved Quality Improved Safety Reduced costs Consistent Deliveries Improved Product/ Service Options [...]... Package density during process: In case of cotton carry out pretreatment process with low alkali In case of polyester texturised yarn due to boiling treatment yarn shrinks, to avoid that either hold the batch at low temperature for longer time i.e 45-60min or adjusting density during winding i.e Wind at lower density so the density increases or become optimum after shrinking 32 Beam Dyeing Parameters for... help of acetic acid Fabric after washing: Check the extract of fabric by pH indicator or pH paper Standard: pH must be neutral If fabric is acidic then adjust flow of water, if alkaline in nature than adjust souring percentage 28 PROCESS CONTROL IN TEXTILE COLORATION 29 Textile Dyeing- Yarn Dyeing Winding density should be even Package density is checked before loading the package First take circumference,... Elements of 5S Self-Discipline/ControlEnsuring that Systematic Organization, Visual Placement & Cleanliness are maintained Systematic Systematic Organization- Identifying what items are required and which are not Standardizing ControlMaintain and continually improve the previous improvements Scrubbing Clean-Keep the area free from debris, dirt, oil, items not needed Sorting Visual PlacementItems should... Contn…… 17 Scouring Kier Lining: Prior to filling the fabric in kier Standard: No cheeping of interior wall of kier Action: Ensure proper cementing of interior wall of kier Filling Density: 7-8Kg/Cubic feet during filling of kier Removal of Air: Standard: No air, ensure complete removal of air Action: Air removal before raising pressure 18 Contn…… Circulation: During scouring, circulation is tested... Pressure: During dyeing, pressure gauge reading on beam dyeing should be35-40psi 34 Jet Dyeing Jet Pressure: Jet pressure: 15-20 psi Adjust jet pressure according to the quality In case of soft flow dyeing machine pressure is very low from 3psi to 10psi Because in this machine fabric is moved mechanically and jets are used only to penetrate the dye liquor in fibers Necessary Action: Adjusting the jet... reproducible results of previous processing Adjust the feeding concentration of chemical as required Stock Solution Quantity: Take study of MLR of process or nature of fabric quality STANDARD: Full consumption of Stock solution should be there, nothing should remain back as wastage Temperature: Check temperature during process Temperature depends on bleaching process and bleaching chemical Regulate steam... Prior to process checking is done visually Checking the angle of the winding: Angel should be 30-45 As the angle increases the density decreases Perforation of the spindles: Perforation of the spindles prior to mounting the spindle It is visually assessed Standard: No perforation mark Necessary Action: Wound butter paper or non woven textile Polycarbide, and polyethylene spindles are only wound Spring... During process, the method of checking is dyeing record Entrap air: Entrapped air is checked prior to built up of the pressure Method is by checking air vent valve Standard: No entrap air and ensure complete air removal Steam leakages: During process visual checking is done for no leakage in the pump and circulating valve Necessary action: Trap or plug all leakages Variation in Package density during... Training Plan Implement 5 S Progressive Enhancements Standardization Cleanliness Visual Placement Step Step6 6 Verification of Effectiveness Verification of Effectiveness 13 Some Evidence of 5S •Clear, shiny aisle ways •Color coded areas •Slogans, banners •No work -in -process ( WIP ) •One-Piece Flow •Standardized Work Sheets 14 PROCESS CONTROL IN TEXTILE PRETREATMENT 15 Desizing 16 Contn…… 17 Scouring... for Souring: Acetic acid or Formic acid is generally used The concentration on an average is 10-15gpl, depending on the alkali remaining on fabric, adjust the concentration of acid Flow rate during feeding of acid: Regulate the flow of acid during feeding Time: As per requirement Ensure optimum dwell time 23 Cont…… Localized drying during Souring: Standard: There should not be any localized drying Remedy: . Quality - 1 8 !"#$"% &'&('&() $& *+&+) ,&) $(-) '&('&() +./) $&+&() ') '//*&') '. *+&+) ,&) $(-) '&('&() +./) $&+&() ') '//*&') '. *+&+) ,&) $(-) '&('&() +./) $&+&() ') '//*&') ' '0&1) !&') (/+'&*2) 9 3', 10 Systematic-Systematic
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