গার্মেন্টস ডাইং
প্রশ্ন – ১. গার্মেন্টস ডাইং কেন করা হয়?
উত্তরঃ তৈরিকৃত পোশাকের কাপড় উজ্জ্বল করা এবং সৌন্দর্য বৃদ্ধি করার জন্য।
প্রশ্ন – ২. কটন পোশাকের জন্য কোন ডাই ব্যবহার করা হয়?
উত্তরঃ ডাইরেক্ট ডাই।
প্রশ্ন – ৩. পলিয়েস্টার পোশাকের জন্য কোন ডাই ব্যবহার করা হয়?
উত্তরঃ ডিসপার্স ডাই।
প্রশ্ন – ৪. সিল্ক কাপড়ের ক্ষেত্রে কোন ডাইন ব্যবহার করা হয়?
উত্তরঃ রিয়্যাকটিভ ডাই।
প্রশ্ন – ৫. কয়েকটি গার্মেন্টস ডাইং মেশিনের নাম লিখ।
উত্তরঃ জিগার ডাইং মেশিন, উইঞ্চ ডাইং মেশিন, জেট ডাইং মেশিন ইত্যাদি।
প্রশ্ন – ৬. পলিয়েস্টার কাপড় ডাইং তাপমাত্রা কত?
উত্তরঃ ১৩০º সেলসিয়াস।
প্রশ্ন – ৭. গার্মেন্টস ওয়াশিং বলতে কি বুঝ?
উত্তরঃ যে প্রক্রিয়ার মাধ্যমে একটি পূর্ণাঙ্গ পোশাককে ধৌত করে এর মধ্যস্থ ময়লা, অপদ্রব্যসমূহ দূর করে পোশাককে পরিষ্কার করা হয়, তাকে গার্মেন্টস ওয়াশিং বলে।
প্রশ্ন – ৮. গার্মেন্টস ওয়াশিং প্রধানত কত প্রকার?
উত্তরঃ দুই প্রকার। যথাঃ ক. ড্রাইং ওয়াশিং, খ. ওয়াটার ওয়াশিং।
প্রশ্ন – ৯. গার্মেন্টস ওয়াশিং এর পদ্ধতি কয়টি?
উত্তরঃ প্রধানত দুইটি। যথাঃ ক. স্টোন ওয়াশিং, খ. কেমিক্যাল ওয়াশিং।
প্রশ্ন – ১০. ব্লিচিং ওয়াশিন কত তাপমাত্রায় সম্পন্ন হয়?
উত্তরঃ ৯০º সেলসিয়াস।
প্রশ্ন – ১১. পিগমেন্ট ওয়াশিং কত তাপমাত্রায় করা হয়?
উত্তরঃ ৬০º সেলসিয়াস।
প্রশ্ন – ১২. স্টাইল অব ওয়াশিং কি?
উত্তরঃ বিভিন্ন ধরনের কেমিক্যাল দ্বারা কিছু শর্ত সাপেক্ষে বিভিন্ন আঁশ দ্বারা তৈরি পোশাককে যে কৌশলে ওয়াশিং করা হয়, তাকে স্টাইল অব ওয়াশিং বলে।
প্রশ্ন – ১৩. গার্মেন্টস ওয়াশিং এ ব্যবহৃত ম্যাটেরিয়াল ও লিকারের অনুপাত কত?
উত্তরঃ ওয়াশিং মেশিন ব্যবহার করে ওয়াশিং করলে ১ঃ ৫ বা ৫ঃ ৮ এবং ওয়াশিং মেশিন ছাড়া ওয়াশিং করলে ১ঃ ১০ বা ১ঃ ১২ ।
প্রশ্ন – ১৪. স্টোন ওয়াশিং এর সংজ্ঞা দাও।
উত্তরঃ পোশাক বা কাপড় ওয়াশিং এর যে প্রক্রিয়ায় পাথর বা স্টোন ব্যবহার করা হয়, তাকে স্টোন ওয়াশিং বলে।
প্রশ্ন – ১৫. কোন প্রকৃতির পোশাককে স্টোন ওয়াশ করা হয়?
উত্তরঃ প্রধানত জিন্স ও ডেনিম এর শার্ট ইত্যাদি।
প্রশ্ন – ১৬. মাংকি ওয়াশ কি?
উত্তপ্রঃ পটাশিয়াম পার কার্বনেট দ্রবণে কাপড়ের নির্দিষ্ট অংশ ডুবিয়ে যে ওয়াশ করা হয়, তাকে মাংকি ওয়াশ বলে।
প্রশ্ন – ১৭. ড্রাই ওয়াশ কি?
উত্তরঃ পোশাককে কোন প্রকার পানিতে না ভিজিয়ে ময়লা অপসারণ করে শুষ্ক পদ্ধতিতে বিভিন্ন কেমিক্যাল দ্বারা পোশাক পরিষ্কার করা হয়, তাকে ড্রাই ওয়াশ বলে।
প্রশ্ন – ১৮. ড্রাই ওয়াশের তাপমাত্রা কত?
উত্তরঃ ১১০º সেলসিয়াস।
প্রশ্ন – ১৯. ব্লিচিং ওয়াশিং এর প্রধান রাসায়নিক পদার্থ কি?
উত্তরঃ কস্টিক সোডা।
প্রশ্ন – ২০. কেমিক্যাল ওয়াশিং এর সংজ্ঞা দাও।
উত্তরঃ যে ওয়াশিং প্রক্রিয়ায় একটি পূর্ণাঙ্গ পোশাককে কেমিক্যাল ব্যবহার করে এর মধ্যস্থ ময়লা, অপদ্রব্য দূর করে পরিষ্কার করা হয়, তাকে কেমিক্যাল ওয়াশিং বলে।
প্রশ্ন – ২১. পোশাক ফিনিশিং কি?
উত্তরঃ পোশাক প্রস্তুতের পর তা ক্রেতার নিকট আকর্ষনীয় করার পোশাককে বিভিন্ন যান্ত্রিক পদ্ধতি ব্যবহার করে বা প্রেসিং, ফোল্ডিং ও প্যাকিং করা হয়, তাকে পোশাক ফিনিশিং বলে।
প্রশ্ন – ২২. ফোল্ডিং কি?
উত্তরঃ প্রেসিং করার পর নির্দিষ্ট আয়তনে পোশাক ভাঁজ করে রাখাকে ফোল্ডিং বলে।
প্রশ্ন – ২৩. প্রেসিং এর অপর নাম কি?
উত্তরঃ আয়রনিং।
প্রশ্ন – ২৪. ফোল্ডিং কত প্রকার ও কি কি?
উত্তরঃ তিন প্রকার। যথাঃ ক. শার্টের ফোল্ডিং, খ. প্যান্টের ফোল্ডিং, গ. জ্যাকেটের ফোল্ডিং।
প্রশ্ন – ২৫. শার্টের ফোল্ডিংগুলোর নাম লিখ।
উত্তরঃ ক. স্ট্যান্ড আপ, খ. সেমি স্ট্যান্ড আপ, গ. ফ্ল্যাট প্যাক ও ঘ.হ্যাঙ্গার প্যাক ফোল্ডিং।
প্রশ্ন – ২৬. প্রেসিং বা আয়রনিং কাকে বলে?
উত্তরঃ যে প্রক্রিয়ার দ্বারা পোশাকের মধ্যস্থ অনাকাঙ্ক্ষিত ভাঁজ বা কোঁকড়ানো অবস্থাকে দূর করে পোশাকের মসৃণতা, চাকচিক্যতা, সৌন্দর্য বৃদ্ধি করা হয় তাকে প্রেসিং বলে।
প্রশ্ন – ২৭. প্যাকিং কাকে বলে?
উত্তরঃ ফোল্ডিং করার পর পোশাককে ধুলাবালি ও অন্যান্য ময়লার হাত থেকে রক্ষার জন্য ও বাজার উপযোগী করার জন্য যে পলি ব্যাগে সংরক্ষণ করা হয়, তাকে প্যাকিং বলে।
প্রশ্ন – ২৮. অ্যাসর্টমেন্ট বলতে কি বুঝ?
উত্তরঃ অ্যাসর্টমেন্ট বলতে সংগ্রহকরণ বা কোন কোন ক্ষেত্রে শ্রেনিবিন্যস্তকরণকেই বুঝায়।
প্রশ্ন – ২৯. ডি-লাসচারিং অর্থ কি?
উত্তরঃ রঙের উজ্জ্বলতা কমিয়ে বিশেষ বৈচিত্র আনয়ন করা।
প্রশ্ন – ৩০. ব্রাইটেনিং ফিনিশিং কি?
উত্তরঃ টেক্সটাইল দ্রব্য বা কাপড়ে অতিমাত্রায় শুভ্রতা আনয়নের জন্য যে কেমিক্যাল ব্যবহার করে বিশেষ ধরনের ফিনিশিং করা হয়, তাকে ব্রাইটেনিং ফিনিশিং বলে।
প্রশ্ন – ৩১. ব্রাইটেনিং প্রণালি কত তাপমাত্রায় করা হয়?
উত্তরঃ ৪০º থেকে ৬০º সেলসিয়াস।
প্রশ্ন – ৩২. স্টিম কি?
উত্তরঃ কোন পাত্রে পানি রেখে তাতে উচ্চ তাপে পানি ফুটিয়ে যে বাষ্প তৈরি করা হয়, তাকে স্টিম বলে।
প্রশ্ন – ৩৩. পোশাকশিল্পে কেন স্টিম ব্যবহৃত হয়?
উত্তর : কাপড় আয়রনিং করার জন্য
Textile engineering viva question & ans.
1. Garment washing.
Ans: The technology which is used to modify the appearance, outlook comfort ability & fashion of the garments is called garment washing.
Ans: The technology which is used to modify the appearance, outlook comfort ability & fashion of the garments is called garment washing.
2. Write the purpose of washing.
Ans:
The first purpose is to remove dirt, dust, impurities of garments thus achieve wash look appearance and softness.
The other purpose is to bring faded look, old look, tinted or over dyed affect.
To increase color fastness, wash fastness properties no possibility of further shrinkage of wash garments.
Ans:
The first purpose is to remove dirt, dust, impurities of garments thus achieve wash look appearance and softness.
The other purpose is to bring faded look, old look, tinted or over dyed affect.
To increase color fastness, wash fastness properties no possibility of further shrinkage of wash garments.
3. Write different types of dry processing.
Ans: Sand blasting, Hand scraping, whiskering, overall wrinkle, permanent wrinkle, broken and tagging, grinding and destroy, pp spray and pp sponging .
Ans: Sand blasting, Hand scraping, whiskering, overall wrinkle, permanent wrinkle, broken and tagging, grinding and destroy, pp spray and pp sponging .
4. Write different types of wet processing.
Ans: Normal wash / Garments wash/ Rinse wash, Pigment wash, Caustic wash, Silicon wash, Stone wash, Enzyme wash, Stone Enzyme wash, Acid wash, Bleach wash.
Ans: Normal wash / Garments wash/ Rinse wash, Pigment wash, Caustic wash, Silicon wash, Stone wash, Enzyme wash, Stone Enzyme wash, Acid wash, Bleach wash.
Garments washing plant
Fig: Garments washing plant
Fig: Garments washing plant
5. Write the machine names which are used in washing plant.
Ans: The machine names which are used in Indigo washing Ltd:
Ans: The machine names which are used in Indigo washing Ltd:
(i) Washing machine ( No of M/c -10)
(ii) Dryer machine (No of M/c -10): gas dryer-09 and Steam dryer-01
(ii) Dryer machine (No of M/c -10): gas dryer-09 and Steam dryer-01
Each m/c wt: 1300 Kg
Rated voltage: 380 V
Rated input power: 6 kw
Rated voltage: 380 V
Rated input power: 6 kw
NB: these machines are imported from China manufacture: Shenzhen Multi se Industries ltd.
Bangladeshi Supplier: RM flying yang industries.
Bangladeshi Supplier: RM flying yang industries.
(iii) Sample Machine (No of M/c-02)
(iv) Hydro (No of M/c -03)
(v) Spray gun (No of M/c -02)
(iv) Hydro (No of M/c -03)
(v) Spray gun (No of M/c -02)
6. Write the chemical names which are used in washing Plant.
Ans:
(i) Sodium mete bi sulphite
(ii) per oxide
(iii) Caustic soda
(iv) Soda ash
(v) LV (pocket clear)
(vi) Bleach Kci
(vii) Caustic potash
(viii) Phosphoric acid
(ix) Pumice stone
(x) Optical Brightening agent (3 types: Red, blue, yellow )
(xi) Sodium hypo sulphite
(xii) Sodium bi carbonate
(xiii) Enzyme (Acid, Neutral , SL enzyme)
(xiv) Acetic acid
(xv) Softener
(xvi) Desizing agent
(xvii) Potassium per maganate
(xviii) Micro emulsion silicon
(xix) Buffer, stabilizer, fixing agent, catanizer , resin, anti staining agent
(xx) Dye for tinting or over dyeing.
Ans:
(i) Sodium mete bi sulphite
(ii) per oxide
(iii) Caustic soda
(iv) Soda ash
(v) LV (pocket clear)
(vi) Bleach Kci
(vii) Caustic potash
(viii) Phosphoric acid
(ix) Pumice stone
(x) Optical Brightening agent (3 types: Red, blue, yellow )
(xi) Sodium hypo sulphite
(xii) Sodium bi carbonate
(xiii) Enzyme (Acid, Neutral , SL enzyme)
(xiv) Acetic acid
(xv) Softener
(xvi) Desizing agent
(xvii) Potassium per maganate
(xviii) Micro emulsion silicon
(xix) Buffer, stabilizer, fixing agent, catanizer , resin, anti staining agent
(xx) Dye for tinting or over dyeing.
7. What is the purpose of normal wash?
Ans:
To remove dust, dirt, oil spot, impurities, spot, size materials, starch from the garments surface
To bring the soft feeling to wear.
Ans:
To remove dust, dirt, oil spot, impurities, spot, size materials, starch from the garments surface
To bring the soft feeling to wear.
8. Describe the 1st and 2nd step of normal / garments wash.
Ans :
1st Step:-
Lot size: -....................... 80 kg Twill/Canvas garment
Add water @ L: R = 1: 8-10 ............640 --800 Liter
Machine running
Add detergent @ 0.5 gm / liter ............ 320--400 gm
Temperature..... Sometime cold & sometime 40°c - 60°c
Time .............................. 5 to 10 minutes
Drop the liquor
Cold wash
Ans :
1st Step:-
Lot size: -....................... 80 kg Twill/Canvas garment
Add water @ L: R = 1: 8-10 ............640 --800 Liter
Machine running
Add detergent @ 0.5 gm / liter ............ 320--400 gm
Temperature..... Sometime cold & sometime 40°c - 60°c
Time .............................. 5 to 10 minutes
Drop the liquor
Cold wash
2nd Step:-
Add water @ L: R = 1: 6 ......... 480 liter.
Washing machine running
Add Flax softener @ 0.6 gm / liter .......... 288 gm.
Add Acetic Acid @ 0.5 gm / liter........... 240gm.
Time................................... 5 to 10 minutes
Drop the liquor.
Unload the Garments on trolley.
Add water @ L: R = 1: 6 ......... 480 liter.
Washing machine running
Add Flax softener @ 0.6 gm / liter .......... 288 gm.
Add Acetic Acid @ 0.5 gm / liter........... 240gm.
Time................................... 5 to 10 minutes
Drop the liquor.
Unload the Garments on trolley.
9. What is the function of Hydro extractor machine?
Ans: Function of Hydro extractor machine is to squeeze the garments for removing the excess water from the garments.
Ans: Function of Hydro extractor machine is to squeeze the garments for removing the excess water from the garments.
10. What is the purpose of silicon wash?
Ans: The purpose of silicon wash:
It gives durable softness, elastic handle,
It helps to anti pilling affects, dimensional stability, tear resistance.
It helps to fabrics to be cut and sewn more easily allows and improving wears and easy care properties.
Ans: The purpose of silicon wash:
It gives durable softness, elastic handle,
It helps to anti pilling affects, dimensional stability, tear resistance.
It helps to fabrics to be cut and sewn more easily allows and improving wears and easy care properties.
11. Write difference between normal wash and silicon wash.
Ans
Ans
Normal wash
Silicon wash
Removes the dust, dirt , impurities, spots, size material, starch from the garments then gives soft feeling to wear
Silicon wash gives durable softness, elastic handle and helps to anti pilling affects, dimensional stability, tear resistance and also improving wears and easy care properties.
Silicon wash
Removes the dust, dirt , impurities, spots, size material, starch from the garments then gives soft feeling to wear
Silicon wash gives durable softness, elastic handle and helps to anti pilling affects, dimensional stability, tear resistance and also improving wears and easy care properties.
12. Describe the Desizing process of silicon Wash.
Ans: Desizing process of silicon Wash:
Lot weight (approx 145 pies) ............ 70 kg
Add water @ L: R = 1: 10.............. 700 Liter
Machine running
Add Desizing agent @ 0.6 gm / liter ............ 420 gm
Add Detergent @ 0.5 gm / liter.................... 350 gm
Temperature.......................... 50°c
Time...............................10-20 minutes
Drop the liquor
Rinse one time 3 minutes
Ans: Desizing process of silicon Wash:
Lot weight (approx 145 pies) ............ 70 kg
Add water @ L: R = 1: 10.............. 700 Liter
Machine running
Add Desizing agent @ 0.6 gm / liter ............ 420 gm
Add Detergent @ 0.5 gm / liter.................... 350 gm
Temperature.......................... 50°c
Time...............................10-20 minutes
Drop the liquor
Rinse one time 3 minutes
13. Describe the softening process of silicon Wash.
Ans:
Lot weight (approx 145 pies) ............ 70 kg
Add water @ L : R = 1 : 8 .............. 560 Liters
Add Acetic Acid @ 0.6 gm / liter ............ 336gm
Cationic Softener @ 1 gm / liter.............. 560 gm
Silicon (ME) @ 0.5 gm / liter ................ 280 gm
Temperature.......................... 40°c
Time................................ 15 to 20 minutes
Drain the bath
Then unload the garments on trolley.
Ans:
Lot weight (approx 145 pies) ............ 70 kg
Add water @ L : R = 1 : 8 .............. 560 Liters
Add Acetic Acid @ 0.6 gm / liter ............ 336gm
Cationic Softener @ 1 gm / liter.............. 560 gm
Silicon (ME) @ 0.5 gm / liter ................ 280 gm
Temperature.......................... 40°c
Time................................ 15 to 20 minutes
Drain the bath
Then unload the garments on trolley.
14. Write the chemicals name which are used for pigment/ caustic wash process.
Ans: Caustic soda, soda ash, detergent, acetic acid, flax softener, silicon (for more soft)
Ans: Caustic soda, soda ash, detergent, acetic acid, flax softener, silicon (for more soft)
15. Write the chemicals name which are used for enzyme wash.
Ans: Chemicals name which are used for enzyme wash such as Desizing agent, detergent, acetic acid, anti back staining agent , enzyme cationic softener ,bleach (Kic) , soda ash, sodium hypo sulphite.
Ans: Chemicals name which are used for enzyme wash such as Desizing agent, detergent, acetic acid, anti back staining agent , enzyme cationic softener ,bleach (Kic) , soda ash, sodium hypo sulphite.
16. Write the Desizing/ first step of caustic wash process.
Ans: 1st step of caustic wash process
Lot size: ...................... 80 kg
Add water @ L: R = 1 : 8.............. 640 Liter
Machine Running
Add Caustic soda (NAOH)..... @ 1.60 gm / liter........ 1024 gm
Add Detergent ........................ @ 0.8 gm / liter ............ 512 gm
Temperature........... 50°c to 60°c
Time (Depend upon the shade) ....... 20 to 60 minutes
Drop the liquor
Wash cold water for 3 minutes
Ans: 1st step of caustic wash process
Lot size: ...................... 80 kg
Add water @ L: R = 1 : 8.............. 640 Liter
Machine Running
Add Caustic soda (NAOH)..... @ 1.60 gm / liter........ 1024 gm
Add Detergent ........................ @ 0.8 gm / liter ............ 512 gm
Temperature........... 50°c to 60°c
Time (Depend upon the shade) ....... 20 to 60 minutes
Drop the liquor
Wash cold water for 3 minutes
17. What is the standard rpm of washing machine?
Ans: Standard rpm of washing machine is 28 to 30.
Ans: Standard rpm of washing machine is 28 to 30.
18. Write the chemicals name which are used for softness of garments.
Ans: Chemicals name which are used for softness of garments are flax softener, cationic softener, multi emulsion silicon.
Ans: Chemicals name which are used for softness of garments are flax softener, cationic softener, multi emulsion silicon.
19. Write the chemicals name which are used for good quality hand feel.
Ans: The chemical names which are used for good quality hand feel are silicon softener, flax softener.
Ans: The chemical names which are used for good quality hand feel are silicon softener, flax softener.
20. What chemical use is for protect staining/bleeding on garments.
Ans: Antistatic or Anti back staining agent used for protecting staining / bleading on garments.
Ans: Antistatic or Anti back staining agent used for protecting staining / bleading on garments.
21. What process is doing for remove starch/sizing materials from the garments?
Ans: Desizing Process is doing for removing sizing materials from the garments.
Ans: Desizing Process is doing for removing sizing materials from the garments.
22. Why Acetic Acid is used in Enzyme bath?
Ans: Acetic acid is used in enzyme bath to control the pH of wash bath and for proper action of enzyme. (To controlling the pH of enzyme because enzyme works at acidic pH).
Ans: Acetic acid is used in enzyme bath to control the pH of wash bath and for proper action of enzyme. (To controlling the pH of enzyme because enzyme works at acidic pH).
23. Write different between steam dryer & gas dryer.
Ans:
Ans:
Steam dryer
Gas dryer
Less temperature (60-70°c) and more time (45-60 min) required in steam dryer where it runs on steam
Comparatively more time (70-85°c) and less time (30-35min) require in gas dryer where it runs on gas.
Steam dryer is more for light Wight white readymade garments
gas dryer is more suitable for canvas/twill denim fabric
Steam dryer can give softness
gas dryer comparatively cannot give such softness
Gas dryer
Less temperature (60-70°c) and more time (45-60 min) required in steam dryer where it runs on steam
Comparatively more time (70-85°c) and less time (30-35min) require in gas dryer where it runs on gas.
Steam dryer is more for light Wight white readymade garments
gas dryer is more suitable for canvas/twill denim fabric
Steam dryer can give softness
gas dryer comparatively cannot give such softness
24. Describe the Desizing process of Denim Long Pant.
Ans: Batch size....................... 60 kg Denim Long Pant
Add water @ L: R = 1 : 9 .............. 540 liters
Start the machine
Temperature.................... 60°c
Add Desizing agent @ 0.6 gm / liter................. 324 gm
Add Detergent / Antistain @ 1 gm / liter ......... 540 gm
Time................................ 15 to 25 minutes
Drop the liquor
Wash first time by cold water.
Ans: Batch size....................... 60 kg Denim Long Pant
Add water @ L: R = 1 : 9 .............. 540 liters
Start the machine
Temperature.................... 60°c
Add Desizing agent @ 0.6 gm / liter................. 324 gm
Add Detergent / Antistain @ 1 gm / liter ......... 540 gm
Time................................ 15 to 25 minutes
Drop the liquor
Wash first time by cold water.
25. Describe the Enzyme bath process of Denim Long Pant by Acid Enzyme.
Ans: Enzyme bath process:
Batch size....................... 60 kg Denim Long Pant
Add water @ L: R = 1: 8.............. 480 Litre
Temperature.......................... 40-50°c.
Add Acetic Acid @ 0.6 gm / litre ................288gm.
Add Anti Back staining @ 0.6 gm / litre .... 288 gm.
Add Acid Enzyme @ 2.00 gm / litre ............ 960 gm.
Time....(Depend upon the shade)...........40---60 mts.
Increase temperature to 90°c and run 1 minute (enzyme killing).
Drain the bath.
Rinse Twice, each 3 minutes.
Ans: Enzyme bath process:
Batch size....................... 60 kg Denim Long Pant
Add water @ L: R = 1: 8.............. 480 Litre
Temperature.......................... 40-50°c.
Add Acetic Acid @ 0.6 gm / litre ................288gm.
Add Anti Back staining @ 0.6 gm / litre .... 288 gm.
Add Acid Enzyme @ 2.00 gm / litre ............ 960 gm.
Time....(Depend upon the shade)...........40---60 mts.
Increase temperature to 90°c and run 1 minute (enzyme killing).
Drain the bath.
Rinse Twice, each 3 minutes.
26. Describe the Enzyme bath process of Denim Long Pant by neutral Enzyme.
Ans: Enzyme (Actual enzyme can give good effect with pumic stone)
Batch size....................... 60 kg Denim Long Pant
Add water @ L : R = 1 : 8 .............. 480 litres
Add pumic stone @ ½ vol of garments
Add Enzyme @ 1.50 gm/litre ..................... 720 Gms
Add Acetic Acid @ 0.6 gm/litre .................. 288 Gms
Add Antistain @ 0.8 gm/litre ..................... 384 Gms
Temperature......................................... 40°c to 50°c
Time (Depend upon the shade) .......... 60 to 70 minutes
Then temperature raise to 90°c for 1 minute.
Drop the liquor
Rinse Twice, each 3 minutes
Then pumic stone out from washing machine
Ans: Enzyme (Actual enzyme can give good effect with pumic stone)
Batch size....................... 60 kg Denim Long Pant
Add water @ L : R = 1 : 8 .............. 480 litres
Add pumic stone @ ½ vol of garments
Add Enzyme @ 1.50 gm/litre ..................... 720 Gms
Add Acetic Acid @ 0.6 gm/litre .................. 288 Gms
Add Antistain @ 0.8 gm/litre ..................... 384 Gms
Temperature......................................... 40°c to 50°c
Time (Depend upon the shade) .......... 60 to 70 minutes
Then temperature raise to 90°c for 1 minute.
Drop the liquor
Rinse Twice, each 3 minutes
Then pumic stone out from washing machine
27. How can do the killing of Enzyme in Enzyme bath?
Ans: In Enzyme bath at the end of the process temperature rise to 90°c for 1 minut to kill the enzyme.
Ans: In Enzyme bath at the end of the process temperature rise to 90°c for 1 minut to kill the enzyme.
28. Why chlorine bleach is use in Denim wet processing?
Ans: Bleaching power is used to color out from denim garments thus different of color on garments achieved i.e.; dark, medium, light.
Ans: Bleaching power is used to color out from denim garments thus different of color on garments achieved i.e.; dark, medium, light.
29. What chemicals is use for neutralization of chlorine bleach?
Ans: Sodium hydro sulphite is used for neutralization of chlorine bleach.
Ans: Sodium hydro sulphite is used for neutralization of chlorine bleach.
30. Write the main 5 function of Enzyme wash.
Ans:
To remove the size materials from the garments
To remove the starch presents on the garments fabrics
For soft feeling to wear the garment
To achieve the buyer reference sample
To increase the color fastness & rubbing fastness
Ans:
To remove the size materials from the garments
To remove the starch presents on the garments fabrics
For soft feeling to wear the garment
To achieve the buyer reference sample
To increase the color fastness & rubbing fastness
31. What is the action of Enzyme on Garments?
Ans: The action of enzyme during enzyme wash, it hydrolysis the cellulose. At first it attacks the having projecting fiber and hydrolyzed them. Then it attacks the yarn portion inside fabric and partly hydrolyzed the yarn portion and faded affect is produced.
Ans: The action of enzyme during enzyme wash, it hydrolysis the cellulose. At first it attacks the having projecting fiber and hydrolyzed them. Then it attacks the yarn portion inside fabric and partly hydrolyzed the yarn portion and faded affect is produced.
32. What is the standard time for Bleaching in Bleaching bath of Denim Garments?
Ans: 12 to 15 minutes is the standard time for bleaching bath of Denim garments.
Ans: 12 to 15 minutes is the standard time for bleaching bath of Denim garments.
33. What types of Enzyme used in Bangladesh?
Ans: Mainly two types of enzyme used in Bangladesh. One is Acid Enzyme (liquid) and another is Neutral Enzyme. Neutral Enzyme is two types –
Ans: Mainly two types of enzyme used in Bangladesh. One is Acid Enzyme (liquid) and another is Neutral Enzyme. Neutral Enzyme is two types –
a) Powder form
b) Liquid form i.e.SL Enzyme.
b) Liquid form i.e.SL Enzyme.
34. Write different between Acid Enzyme & Neutral Enzyme.
Ans:
Ans:
Acid Enzyme
Neutral Enzyme
Acid Enzyme is mostly used in purpose of medium and light shade
Neutral Enzyme is mostly used in purpose of dark shade and with stone for stone enzyme wash
This Enzyme affects come within short time
It affects come slowly.
Neutral Enzyme
Acid Enzyme is mostly used in purpose of medium and light shade
Neutral Enzyme is mostly used in purpose of dark shade and with stone for stone enzyme wash
This Enzyme affects come within short time
It affects come slowly.
35. How can control the pH value in Garments?
Ans: By using acetic acid we can control the pH value in garments.
Ans: By using acetic acid we can control the pH value in garments.
36. What types of Enzyme suitable for Dark shade Enzyme wash of Denim Long Pant & why?
Ans: Neutral Enzyme is suitable for dark shade enzyme wash of denim long pant because this enzyme works for long time as compare to acid enzyme and affect comes slowly.
Ans: Neutral Enzyme is suitable for dark shade enzyme wash of denim long pant because this enzyme works for long time as compare to acid enzyme and affect comes slowly.
37. What type of Enzyme suitable for medium/light shade Enzyme wash of Denim skirt?
Ans: Acid enzyme is suitable for medium/light shade Enzyme wash of Denim skirt.
Ans: Acid enzyme is suitable for medium/light shade Enzyme wash of Denim skirt.
38. Write Desizing process of twill Long Pant for Enzyme wash.
Ans: Desizing process of twill Long Pant for Enzyme wash:
Lot weight (Approx 125 pes) ............ 60 kg
Add water @ L : R = 1 : 10 .............. 600 Litre
Machine Running
Add Desizing agent @ 0.6 gm / litre ............ 360 gm
Add Detergent @ 0.5 gm / litre.................... 300 gm
Temperature.................................... 50°c
Time........................................10---20 minute
Drop the liquor
Rinse one time 3 minutes
Ans: Desizing process of twill Long Pant for Enzyme wash:
Lot weight (Approx 125 pes) ............ 60 kg
Add water @ L : R = 1 : 10 .............. 600 Litre
Machine Running
Add Desizing agent @ 0.6 gm / litre ............ 360 gm
Add Detergent @ 0.5 gm / litre.................... 300 gm
Temperature.................................... 50°c
Time........................................10---20 minute
Drop the liquor
Rinse one time 3 minutes
39. Write Enzyme bath process of Twill Long Pant Enzyme wash.
Ans: Add water @ L : R = 1 : 8 .............. 480 Litre
Temperature.......................... 45°c
Add Acetic Acid @ 0.5 gm / litre ............ 240 gm
Add Acid Enzyme @ 1.2 gm / litre ............ 576 gm
Add Anti stain @ 0.50 gm / litre ................ 240 gm
Time (Depend upon the standard)........ 30 to 60 minutes
Increase temperature to 90°c and run 1 minute.
Drain the bath
Rinse Twice, each 3 minutes.
Ans: Add water @ L : R = 1 : 8 .............. 480 Litre
Temperature.......................... 45°c
Add Acetic Acid @ 0.5 gm / litre ............ 240 gm
Add Acid Enzyme @ 1.2 gm / litre ............ 576 gm
Add Anti stain @ 0.50 gm / litre ................ 240 gm
Time (Depend upon the standard)........ 30 to 60 minutes
Increase temperature to 90°c and run 1 minute.
Drain the bath
Rinse Twice, each 3 minutes.
40. Write main process of stone Enzyme wash for Denim Long Pant.
Ans: Main process of stone Enzyme wash for Denim Long Pant:
(i) Desizing/ pre- treatment
(ii) Hot wash
(iii) Stone enzyme bath
(iv) Bleaching
(v) Neutral wash
(vi) Soft wash
(vii) Hydro extractor
(viii) Dryer
(ix) Quality checking
(x) Delivery.
Ans: Main process of stone Enzyme wash for Denim Long Pant:
(i) Desizing/ pre- treatment
(ii) Hot wash
(iii) Stone enzyme bath
(iv) Bleaching
(v) Neutral wash
(vi) Soft wash
(vii) Hydro extractor
(viii) Dryer
(ix) Quality checking
(x) Delivery.
41. What is the perfect temperature for Acid Enzyme and neutral Enzyme?
Ans: The perfect temperature for Acid Enzyme is 45°c and perfect temperature of neutral Enzyme is 60 °c.
Ans: The perfect temperature for Acid Enzyme is 45°c and perfect temperature of neutral Enzyme is 60 °c.
42. Write different types of washing faults.
Ans:
Color shade variation
Crease marks
After wash hole
Very dark and very light
Bleach spot
Bottom hem and course edge destroy
Running shade
Over blasting/low blasting
Over grinding/low grinding
Bad smell due to poor neutralization
Poor hand feel
To high hairiness
Poor brightness
High or low effect/abrasion on garments
Spot on garments
Out of range/ level of ph value of garments
Ans:
Color shade variation
Crease marks
After wash hole
Very dark and very light
Bleach spot
Bottom hem and course edge destroy
Running shade
Over blasting/low blasting
Over grinding/low grinding
Bad smell due to poor neutralization
Poor hand feel
To high hairiness
Poor brightness
High or low effect/abrasion on garments
Spot on garments
Out of range/ level of ph value of garments
43. Write the function of Anti stain, Detergent, and Potassium per Manganate, Micro Emulsion Softener, Hydrogen Peroxide, Optical Brightener, and Desizing Agent.
Ans:
Anti stain is used to protect staining or bleeding .
Detergent is used to remove dust, dirt , impurities of garments
Potassium per Manganate is used to color out from the garments
Micro Emulsion Softener gives durable softness lubricity, elastic handle, anti pilling, dimensional stability, tear resistance and fabric to be cut and sewn more easily allows and improving wear and easy care properties.
Hydrogen Peroxide breaks up in alkaline medium and gives some perhydroxhylion which dis color the coloring materials and as a result faddingaffect is developed
Optical Brightener is used to improve the brightness of garments.
Desizing agent is used to remove mainly starches, cmc, waxes, fats pectin’s, minerals & unfixed indigo dye from denim, twills, poplin & canvas fabrics.
Anti stain is used to protect staining or bleeding .
Detergent is used to remove dust, dirt , impurities of garments
Potassium per Manganate is used to color out from the garments
Micro Emulsion Softener gives durable softness lubricity, elastic handle, anti pilling, dimensional stability, tear resistance and fabric to be cut and sewn more easily allows and improving wear and easy care properties.
Hydrogen Peroxide breaks up in alkaline medium and gives some perhydroxhylion which dis color the coloring materials and as a result faddingaffect is developed
Optical Brightener is used to improve the brightness of garments.
Desizing agent is used to remove mainly starches, cmc, waxes, fats pectin’s, minerals & unfixed indigo dye from denim, twills, poplin & canvas fabrics.
44. Describe only Bleaching process of Bleach wash of Denim Long Pant.
Ans:
Batch size....................... 60 kg Denim Long Pant
Add water @ L: R = 1: 8.............. 480 litres
Machine running
Add bleaching powder (k.c.i) @ 10 gm/litre.. 4800 Gms
Add soda ash @ 5 gm/litre............................... 2400 Gms
Temperature............................................................ 60°c
Time (Depend upon the shade).................... 12 to 15 minutes
Drop the liquor
Rinse twice, each 3 minutes
Ans:
Batch size....................... 60 kg Denim Long Pant
Add water @ L: R = 1: 8.............. 480 litres
Machine running
Add bleaching powder (k.c.i) @ 10 gm/litre.. 4800 Gms
Add soda ash @ 5 gm/litre............................... 2400 Gms
Temperature............................................................ 60°c
Time (Depend upon the shade).................... 12 to 15 minutes
Drop the liquor
Rinse twice, each 3 minutes
45. What do you know about pumic stone?
Ans: The pumice stone are the perforated stones, produced from volcanic explosion it acts brushing action on the garments fabric surface specially on the multi layer fabric areas like –Collar, Cuff, Pocket, Placket, Side seams areas will be brushed more than the single layer areas.Pumice stones come from Indonesia and Turkey. Size small 2-3 cm, medium 3-5 cm and large size 5-7 cm. Two to Three times can be used are pumice stone. Every bag contain 22 kg to 25 kg and price 400/= to 425/=/ bag (varies).
Ans: The pumice stone are the perforated stones, produced from volcanic explosion it acts brushing action on the garments fabric surface specially on the multi layer fabric areas like –Collar, Cuff, Pocket, Placket, Side seams areas will be brushed more than the single layer areas.Pumice stones come from Indonesia and Turkey. Size small 2-3 cm, medium 3-5 cm and large size 5-7 cm. Two to Three times can be used are pumice stone. Every bag contain 22 kg to 25 kg and price 400/= to 425/=/ bag (varies).
46. Write the App. Enzyme & Silicon wash charge for Twill Men’s & Boy’s Trouser separately.
Ans: Silicon wash:
Boyes item – US $ 1.50- $1.75/Doz
Adult item – US $ 1.75- $1.75/Doz
Enzyme wash (twill ):
Boyes item – US $ 2.00- $2.25/Doz
Adult item – US $ 2.75- $3.00/Doz
Ans: Silicon wash:
Boyes item – US $ 1.50- $1.75/Doz
Adult item – US $ 1.75- $1.75/Doz
Enzyme wash (twill ):
Boyes item – US $ 2.00- $2.25/Doz
Adult item – US $ 2.75- $3.00/Doz
47. Why we run the dryer with garment after dry 10 to 15 minutes in cold position?
Ans: we run the dryer with garment after dry 10 to 15 minutes in cold position to avoid shrinkage.
Ans: we run the dryer with garment after dry 10 to 15 minutes in cold position to avoid shrinkage.
48. Which dryer is suitable to dry white readymade garments and why?
Ans: Steam dryer is more suitable to dry white readymade garments because in gas dryer flam/ burning effect can be occurred.
Ans: Steam dryer is more suitable to dry white readymade garments because in gas dryer flam/ burning effect can be occurred.
49. Describe the risk/problem of gas dryer.
Ans: It can create flame / burning effect on garments surface.
Ans: It can create flame / burning effect on garments surface.
50. Describe the fault/problem of garments if Excess Load in the washing machine.
Ans: Washing chemicals will not work properly so desizing/fading/bleaching/softening will not achieve as required level.
Ans: Washing chemicals will not work properly so desizing/fading/bleaching/softening will not achieve as required level.
51. What are the reasons of after wash hole?
Ans: Holes appearing in clothing after laundering is one of those mysteries that you will have to do a process of elimination to figure out. Look at each probable cause and then you'll need to check out and resolve each one.Using too much bleach or not allowing the bleach to thoroughly mix with water before putting in clothes will cause holes. If, however, the holes occur when no bleach is used, then this is not the cause.
Ans: Holes appearing in clothing after laundering is one of those mysteries that you will have to do a process of elimination to figure out. Look at each probable cause and then you'll need to check out and resolve each one.Using too much bleach or not allowing the bleach to thoroughly mix with water before putting in clothes will cause holes. If, however, the holes occur when no bleach is used, then this is not the cause.
52. What is the standard r.p.m(inner drum)of industrial dryer?
Ans: The standard r.p.m(inner drum)of industrial dryer is 28-30 r.p.m
Ans: The standard r.p.m(inner drum)of industrial dryer is 28-30 r.p.m
53. If inner drum r.p.m of washing machine and dryer machine is too high.What types of effect on garments?
Ans: When r.p.m of washing machine is too high that time inner drum of washing machine work very quickly.So we get high quality of garments.On the other hand, when r.p.m of dryer machine is too high that time work not uniform dry. So we get low quality of garment.
Ans: When r.p.m of washing machine is too high that time inner drum of washing machine work very quickly.So we get high quality of garments.On the other hand, when r.p.m of dryer machine is too high that time work not uniform dry. So we get low quality of garment.
54. What are std L:R for desizing,enzyme bath,softener bath?
Ans: Standard L:R for desizing is 1:9 ,for Enzyme bath= 1:8 and for Softener bath= 1:8
Ans: Standard L:R for desizing is 1:9 ,for Enzyme bath= 1:8 and for Softener bath= 1:8
55. Write the name of steps of stone Enzyme wash process of Denim Long Pant.
Ans:
Steps of stone Enzyme wash process of Denim Long Pant are given bellow:
Pretreatment/ Desizing
Hot wash
Stone +Enzyme
Bleaching
Neutral wash
Soft wash
Hydro extractor machine
Drying machine
Delivery
Ans:
Steps of stone Enzyme wash process of Denim Long Pant are given bellow:
Pretreatment/ Desizing
Hot wash
Stone +Enzyme
Bleaching
Neutral wash
Soft wash
Hydro extractor machine
Drying machine
Delivery
56. Write the name of steps of Enzyme wash process of Denim Dark Enzyme wash process.
Ans:
Steps of Enzyme wash process of Denim Dark Enzyme process:
Pretreatment / Desizig
Enzyme
Softening
Hydro extractor machine
Drying machine
Deliver
Ans:
Steps of Enzyme wash process of Denim Dark Enzyme process:
Pretreatment / Desizig
Enzyme
Softening
Hydro extractor machine
Drying machine
Deliver
57. Write the flow chart of Medium Enzyme shah wash of Denim Readymade Garments.
Ans: Pretreatment
Enzyme
Bleaching
Neutral wash
Soft wash
Hydro extractor machine
Drying machine
Delivery
Ans: Pretreatment
Enzyme
Bleaching
Neutral wash
Soft wash
Hydro extractor machine
Drying machine
Delivery
58. Write the chemical name of Acid wash process.
Ans: Chemicals used in Acid wash process are-
Desizing agent
Detergent
Potassium permanganate
Sodium Matabisulphite
Phosphoric acid
Acetic acid
Softener
Ans: Chemicals used in Acid wash process are-
Desizing agent
Detergent
Potassium permanganate
Sodium Matabisulphite
Phosphoric acid
Acetic acid
Softener
59. What is the standard stock solution of P.P solution?
Ans: The standard stock solution of P.P solution is 0.4% i.e. 100 Liter water 400 grams potassium permanganate.
Ans: The standard stock solution of P.P solution is 0.4% i.e. 100 Liter water 400 grams potassium permanganate.
60. How do you neutralization of P.P treatment garments?
Ans: We can neutralize the P.P treated garments by applying sodium metabisulphite.
Ans: We can neutralize the P.P treated garments by applying sodium metabisulphite.
61. Write the precaution of acid wash.
Ans:
Precaution of acid wash:
Maintain the stock solution properly constant when comes socking the stone.
No water licks in to the machine when treated pumic stone & garments in to the machine.
Not excess load the garments in the Acid wash processing.
Add some new stone after finishing on batch to maintain the volume for 2ndbatch. It is a matter of experience
Ans:
Precaution of acid wash:
Maintain the stock solution properly constant when comes socking the stone.
No water licks in to the machine when treated pumic stone & garments in to the machine.
Not excess load the garments in the Acid wash processing.
Add some new stone after finishing on batch to maintain the volume for 2ndbatch. It is a matter of experience
62. What type of dyes used for Tinting of ready made garments?
Ans: Reactive Dye, Direct dye.
Ans: Reactive Dye, Direct dye.
63. Generally which color is used for Tinting?
Ans: Orange (bright color), Yellow or Blue. Similar shade given colours.
Ans: Orange (bright color), Yellow or Blue. Similar shade given colours.
64. Write the main tinting process (Dyeing) by Direct Dyes.
Ans:
Step 1: Desizing: Batch size: 60pcs
Water is added
Garments are loaded
Machine started
500 gm Soda ash added
500 gm Caustic soda added
200 gm Bio. D added
Steam temp: 60°C
Process time: 25 minutes
Drop liquor
Step 2:Enzyme wash
Water added 400 liters
Machine running
200 ml liquid, 400 gm powder type enzyme added
150 ml Acetic acid added
200 gm Anti Back staining agent added
10 kg Pumice stone added
Temp: 50°C
Process time: 60 minutes
Drop liquor
Step 3:Bleaching
Add water at L:R=1:8…..480 litre
Machine running.
Add bleaching powder (k.c.i) at 10 gm/litre.. 4800 Gms.
Add soda ash @ 5 gm/litre ..............2400 gm
50c x15-20 mts
Drop the liquor.
Rinse twice, each 3 minutes.
Ans:
Step 1: Desizing: Batch size: 60pcs
Water is added
Garments are loaded
Machine started
500 gm Soda ash added
500 gm Caustic soda added
200 gm Bio. D added
Steam temp: 60°C
Process time: 25 minutes
Drop liquor
Step 2:Enzyme wash
Water added 400 liters
Machine running
200 ml liquid, 400 gm powder type enzyme added
150 ml Acetic acid added
200 gm Anti Back staining agent added
10 kg Pumice stone added
Temp: 50°C
Process time: 60 minutes
Drop liquor
Step 3:Bleaching
Add water at L:R=1:8…..480 litre
Machine running.
Add bleaching powder (k.c.i) at 10 gm/litre.. 4800 Gms.
Add soda ash @ 5 gm/litre ..............2400 gm
50c x15-20 mts
Drop the liquor.
Rinse twice, each 3 minutes.
Step 4: Neutral Wash
Water is added: 400 liters
Machine running
500 gm Hypo sulphide added
Steam temp: 45°
Process time: 10 minutes
Drop liquor
Step 5:Tinting
Water is added (400 liters)
Machine running
Add 0.02% Direct Brown GTL and 0.01% Direct Black V-200
4kg salt is added
Steam temp: 70°C
Process time: 20 minutes
Check shad
Drop the liquor
Step 6: Drying
Water is added: 400 liters
Machine running
500 gm Hypo sulphide added
Steam temp: 45°
Process time: 10 minutes
Drop liquor
Step 5:Tinting
Water is added (400 liters)
Machine running
Add 0.02% Direct Brown GTL and 0.01% Direct Black V-200
4kg salt is added
Steam temp: 70°C
Process time: 20 minutes
Check shad
Drop the liquor
Step 6: Drying
65. Write the main tinting process (Dyeing) by Reactive Dyes.
Ans:
Ans:
Step 1: Desizing: Batch size: 60pcs
Water is added
Garments are loaded
Machine started
500 gm Soda ash added
500 gm Caustic soda added
200 gm Bio. D added
Steam temp: 60°C
Process time: 25 minutes
Drop liquor
Step 2: Enzyme wash:
Water added 400 liters
Machine running
200 ml liquid, 400 gm powder type enzyme added
150 ml Acetic acid added
200 gm Anti Back staining agent added
10 kg Pumice stone added
Temp: 50°C
Process time: 60 minutes
Drop liquor
Step 3:Bleaching
Add water at L:R=1:8…..480 litre
Machine running.
Add bleaching powder (k.c.i) at 10 gm/litre.. 4800 Gms.
Add soda ash @ 5 gm/litre ..............2400 gm
50cx15-20 mts
Drop the liquor.
Rinse twice, each 3 minutes.
Step 4: Neutralwash
Water is added: 400 liters
Machine running
500 gm Hypo sulphide added
Steam temp: 45°C
Process time: 10 minutes
Drop liquor
Step 5: Tinting
Water is added (400 liters)
Machine running
Add 0.03% Reactive MPL and 0.02% Reactive 300pp
Added
4kg salt is added
Steam temp: 70°C
Process time: 20 minutes
Check shade
Drop the liquor
Step 6: Drying
Water is added
Garments are loaded
Machine started
500 gm Soda ash added
500 gm Caustic soda added
200 gm Bio. D added
Steam temp: 60°C
Process time: 25 minutes
Drop liquor
Step 2: Enzyme wash:
Water added 400 liters
Machine running
200 ml liquid, 400 gm powder type enzyme added
150 ml Acetic acid added
200 gm Anti Back staining agent added
10 kg Pumice stone added
Temp: 50°C
Process time: 60 minutes
Drop liquor
Step 3:Bleaching
Add water at L:R=1:8…..480 litre
Machine running.
Add bleaching powder (k.c.i) at 10 gm/litre.. 4800 Gms.
Add soda ash @ 5 gm/litre ..............2400 gm
50cx15-20 mts
Drop the liquor.
Rinse twice, each 3 minutes.
Step 4: Neutralwash
Water is added: 400 liters
Machine running
500 gm Hypo sulphide added
Steam temp: 45°C
Process time: 10 minutes
Drop liquor
Step 5: Tinting
Water is added (400 liters)
Machine running
Add 0.03% Reactive MPL and 0.02% Reactive 300pp
Added
4kg salt is added
Steam temp: 70°C
Process time: 20 minutes
Check shade
Drop the liquor
Step 6: Drying
66. What is Standard Blowing angle for Sand Blasting?
Ans: 200
Ans: 200
67. What are the main ingredients for Sand Blasting process?
Ans: ALUMINIUM OXIDE (Al2O3)
Ans: ALUMINIUM OXIDE (Al2O3)
68. Write the approx. Production/hr/gun of sand Blasting.
Ans: 25-50 garments (depends on rate of fading needed)
Ans: 25-50 garments (depends on rate of fading needed)
69. Write the name of protective items for health in the sand blasting process.
Ans:
Mask
Hand gloves
Sound protector
Cap
Safety Glass
Apron
Ans:
Mask
Hand gloves
Sound protector
Cap
Safety Glass
Apron
70. What do you mean by PP Spray?
Ans:
By spray gun potassium permanganate is sprayed on garments surface.
Chemical composition: 10g kmno4 in 1 litresoln with 1% lubricant.
After desizing pp is done then neutralized by oxalic acid.
Very much body hazard.
High production rate.
71. What do you mean by PP Sponging?
Ans:
Buyer recommended PP Sponging avoiding pp spray
But manufacturer ignored it because PP sponging has low production
Manually by sponge potassium permanganate is get touched with garments before main enzyme wash and after desizing and hot wash.
72. What is the purpose of PP Spray?
Ans:
To import smogyfaded effect in garments.
Ans:
To import smogyfaded effect in garments.
73. What is the purpose of PP Sponging?
Ans:
To import fading effect in specific areas (thigh,bum,knee) of garments as buyer recommended.
Ans:
To import fading effect in specific areas (thigh,bum,knee) of garments as buyer recommended.
74. What do you mean by Whiskering?
Ans:
It is known as CAT’s whisker,Moustache,Honeycomb.
It’s another form that shows a worn effect but fashionable garments.
Steps of Whiskering:
Plot the design (buyer) on a tracing paper
Transfer the design on ply wood
Place the rubber sheet on ply wood as the design on ply wood
Attach rubber with wood by gum to make the pattern
Enter the pattern in front opening of pant
Rub by emery paper (300,400,500) ppm
Thus the effect comes on garments is called “WHISKERING”
Ans:
It is known as CAT’s whisker,Moustache,Honeycomb.
It’s another form that shows a worn effect but fashionable garments.
Steps of Whiskering:
Plot the design (buyer) on a tracing paper
Transfer the design on ply wood
Place the rubber sheet on ply wood as the design on ply wood
Attach rubber with wood by gum to make the pattern
Enter the pattern in front opening of pant
Rub by emery paper (300,400,500) ppm
Thus the effect comes on garments is called “WHISKERING”
75. What do you mean by Tagging?
Ans: Tagging is a washing process by which crease marks is occurred in the upper portion of garments and dark shade is occurred inside of tagging. This process is done by using tagging machine or also by needle and thread & manually.
Ans: Tagging is a washing process by which crease marks is occurred in the upper portion of garments and dark shade is occurred inside of tagging. This process is done by using tagging machine or also by needle and thread & manually.
76. What do you mean by Grinding?
Ans: Grinding is doing on garments for mainly old/used look appearance & fashion. Grinding is doing on hem, pocket edge, waist belt, pocket opening & pocket pluff of garments. This process is done by using grinding machine or sand paper by manually.
Ans: Grinding is doing on garments for mainly old/used look appearance & fashion. Grinding is doing on hem, pocket edge, waist belt, pocket opening & pocket pluff of garments. This process is done by using grinding machine or sand paper by manually.
77. What do you mean by Destroy?
Ans: Destroy is doing by manually or different types of machine used for destroying the garments: grinding machine, emery cloth, hacksaw blade, knife etc.when destroy is done on garments, it seems to be long time use effect.
Ans: Destroy is doing by manually or different types of machine used for destroying the garments: grinding machine, emery cloth, hacksaw blade, knife etc.when destroy is done on garments, it seems to be long time use effect.
78. What types of fabrics are suitable for Permanent Crinkle?
Ans: Dense woven fabrics normally (twill like DENIM, plain like BABY FROK), Single jersey ( rare case)
Ans: Dense woven fabrics normally (twill like DENIM, plain like BABY FROK), Single jersey ( rare case)
79. Write the chemical name for permanent Crinkle on the Garment.
Ans:
I. Stock solutions for Resin solution is 300g resin in 700L water.
II. Wetting agent : 0.5% owf
III. Resin : 6-10% owf
IV. Softener : 3-5% owf
V. Water : 60-80 litres
Ans:
I. Stock solutions for Resin solution is 300g resin in 700L water.
II. Wetting agent : 0.5% owf
III. Resin : 6-10% owf
IV. Softener : 3-5% owf
V. Water : 60-80 litres
80. What is the standard Temperature for permanent Crinkle on the oven?
Ans: 140c to 160c
Ans: 140c to 160c
81. What is the standard time is required for permanent wrinkle in the oven?
Ans:
Time:20-40 minutes,15 minutesb(Standard)
Ans:
Time:20-40 minutes,15 minutesb(Standard)
82. What do you mean by overall Crinkle?
Ans:Which type of crinkle is created through the hole garments but not permanently placed, that is called overall crinkle.Basis on area of crinkle the overall crinkle is determined.Overall crinkle is done in :Mens shirt-pant, Women tops etc.
Ans:Which type of crinkle is created through the hole garments but not permanently placed, that is called overall crinkle.Basis on area of crinkle the overall crinkle is determined.Overall crinkle is done in :Mens shirt-pant, Women tops etc.
83. What types of Dyes are used for 100% cotton readymade Garments?
Ans:
Vat dye(high cost, excellent fastnes)
Reactive dye(less cost. Good fastness)
Indigo dye (better rubbing fastness)
Disperse dye
Sulphur dye
Ans:
Vat dye(high cost, excellent fastnes)
Reactive dye(less cost. Good fastness)
Indigo dye (better rubbing fastness)
Disperse dye
Sulphur dye
84. What do you mean by Ready for Dyeing Garments?
Ans:
RDG means which garments already desized,scoured,bleached.
Its colour is white. It is clean and ready to treat with dye.
85. Write the main/first step of ready for dyeing process.
Ans:
Good pretreatment (DESIZING)
Ans:
RDG means which garments already desized,scoured,bleached.
Its colour is white. It is clean and ready to treat with dye.
85. Write the main/first step of ready for dyeing process.
Ans:
Good pretreatment (DESIZING)
86. What do you mean by super white process?
Ans:
Which washing process creates white garments made of cotton grey fabrics is called super white process, it just severly washed out the colour of garments by extreme bleach action then brightening the garments.
Ans:
Which washing process creates white garments made of cotton grey fabrics is called super white process, it just severly washed out the colour of garments by extreme bleach action then brightening the garments.
87. Write the chemical names which are used for super white process.
Ans:
Detergent
Caustic soda(COLD)
Soda ash
Hydrogen per oxide
Stabilizer
Acetic acid
Optical brightener agent
Ans:
Detergent
Caustic soda(COLD)
Soda ash
Hydrogen per oxide
Stabilizer
Acetic acid
Optical brightener agent
88. Write the Dyeing bath process of Pigment Dyes for cotton ready-made Garment.
Ans:
Pigment dyes are useful to give a washdown casual look on leisurewear. These dyes are less precise than reactive dyes as colour matching cannot be so precisely achieved. This is because the process involves 3 main stages. The first stage is to treat the fabric with a cationic product. This in effect makes the fabric more readily accept pigment dye molecules that do not really penetrate the fibres as other dye types but tend to sit on the surface of the fabric. This quality is how the washdown look is reached in the second stage.
The second stage is applying the pigment dye. With the machine turning quite quickly the pigment dye in liquid form, rather like paint, is introduced into the machine and is dispersed over the fabric. The machine turns quickly to ensure an even dispersal. During this part of the process the mechanical action of the machine and the fabrics rubbing on each other knocks off some of the dye. The dye is reduced particularly from the high spots such as seams, hems pocket edges and so forth. There is no separate washdown process as this dye cycle is usually sufficient to achieve the required look. As the dye only sits on the surface removing some of it by mechanical action reveals the undyed fibre. This gives the worn look associated with pigment dyes.
The third stage involves processing with a binder. This is designed to keep the pigment dye attached to the surface of the fabric. Of course there are various rinse stages between the main processes and the final stage is usually a softening bath.
89. Write the Dyeing bath process of Sulphur Dyes for cotton Readymade Garment?
Ans:
Sulphur dyes and find their main use in the dyeing of cellulosics and their blends. They are insoluble in water but can be converted into their leuco form using a reducing agent like sodium sulphide, in which state they have a high affinity for the fibre.
Ans:
Sulphur dyes and find their main use in the dyeing of cellulosics and their blends. They are insoluble in water but can be converted into their leuco form using a reducing agent like sodium sulphide, in which state they have a high affinity for the fibre.
Sulfast dyes exhibit good all round fastness properties except for hypochlorite bleaching.
General Application Methods:Sulfast dyes can be applied in the following ways:
Jigger Dyeing - Batch wise.
Drum Dyeing - Garments.
Warp – sheet dyeing - Denim.
Solfast dyes are water-soluble dyes but having no substantivity. Hence can be applied by the pigmenting system to allow the dye to fully penetrate the substrate by padding(as in the case of woven fabrics) or by package dyeing (as in the case of yarn) and then reduced at a later stage.
This helps to ensure better penetration and level dyeing
Package (Cone or Cheese) Dyeing.
Pad – Steam
Pad – Batch
Pad – Dry – Chemical Pad.
Warp – Sheet dyeing.
General Application Methods:Sulfast dyes can be applied in the following ways:
Jigger Dyeing - Batch wise.
Drum Dyeing - Garments.
Warp – sheet dyeing - Denim.
Solfast dyes are water-soluble dyes but having no substantivity. Hence can be applied by the pigmenting system to allow the dye to fully penetrate the substrate by padding(as in the case of woven fabrics) or by package dyeing (as in the case of yarn) and then reduced at a later stage.
This helps to ensure better penetration and level dyeing
Package (Cone or Cheese) Dyeing.
Pad – Steam
Pad – Batch
Pad – Dry – Chemical Pad.
Warp – Sheet dyeing.
90. Write difference between Sand Blasting and Hands Scraping?
Ans:
Sand blasting is done on the garments by using the nozzles to apply sand(Al2O3) flow to get faded effect otherwise hand scrapping is done on the garments surface manually by using scrapping paper to get the faded effect. Sand blasting is hazardous for health otherwise hand scrapping is not.
Ans:
Sand blasting is done on the garments by using the nozzles to apply sand(Al2O3) flow to get faded effect otherwise hand scrapping is done on the garments surface manually by using scrapping paper to get the faded effect. Sand blasting is hazardous for health otherwise hand scrapping is not.
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