This document discusses bio-polishing, which is a finishing process that enhances knitted fabrics using enzymes. It defines bio-polishing and lists its objectives of removing protruding fibers, pills, and hairiness to prevent material sticking and soften fabric handle. The standard recipe and procedure are provided, including using a 3% enzyme concentration at 50°C for 55 minutes at pH 4-5. Advantages include improved surface smoothness and flexibility, while disadvantages include potential weight and strength loss if not carefully controlled. Proper control of concentration, temperature, pH, ratio, and time are emphasized to handle the process effectively.

1. Welcome to our
presentation

2. 1. Sharmin Akter Sumi
ID- BTE 012 05676
2. Moynul Hassan
ID- BTE 012 05682
3. Md. Rahim Tanjim
ID- BTE 012 05690
4. Md. Abdul Wahed
ID- BTE 012 05692
Md. Rafiul Islam
Lecturer, Department of Textile Engineering
Port City International University
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Submitted by Submitted to

3. “
Study on
bio-polishing
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Topic

4. Definition
✔ Bio-polishing is a finishing process that
enhances fabric quality by decreasing the
pilling tendency and fuzziness of (cellulose)
knitted fabrics. This finishing process
applied to cellulose textiles that produces
permanent effects by the use of enzymes.
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Bio-polished
garment

5. Objectives
✔ To removes protruding fibres & slubs.
✔ To removes Hairiness, fluffs and pills .
✔ To Prevented material sticking .
✔ To softens fabric hand & improved handle .
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6. Standard recipe
✔ Concentration of Enzyme = 3%
✔ M : L = 1:10
✔ Temperature = 50˚C
✔ Time = 55 minutes
✔ pH = 4 - 5
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7. ✔Fill the machine with water
✔Add nonionic wetting agents
✔Adjust pH 4 to 5 with acetic acid
✔Add lubricant (non-ionic)
✔Load the garment in the machine and run the machine for 30 minutes at 45 - 50˚C
✔Remove one garment from the machine and compare with the unwashed garment to see the effect of bio-
polishing
✔If bio-polishing is satisfactory, raise the temperature gradually to 85˚C and maintain the temperature for 10
minutes to deactivate the enzyme
✔Drain the liquor
✔Cold rinse for 5 - 10 minutes followed by hydro extraction and tumble dry
Working procedure
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8. DisadvantagesAdvantages
✔Hairiness, fluffs and pills are removed.
✔Material sticking is prevented.
✔Achievement of surface smoothness and a clear structural
appearance.
✔Increased flexibility and therefore a soft handle even with over
end-products and mercerized fabric.
✔Fast to washing, low pilling tendency, no napping in use, or
during care operation.
✔Poor quality, uneven, napped, knoppy material surface (ie)
typical second quality goods are converted into elegant,
lustrous, soft, top quality with a fine, high quality surface
appearance.
✔ Loss in weight
✔ Loss in strength
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9. “
With the advantages of Bio-
polishing there have some
disadvantage of this process. So,
we have need to handle the
process with carefully by
controlling Concentration,
Temperature, pH , M:L, & Time.
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Conclusion

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Thank you for your
attention
Stay safe and healthy