STONE WASH Pumic Stone The pumic stones are

STONE WASH Pumic Stone: • The pumic stones are the perforated stones, produced from volcanic explosion • At first these stones are softened but becomes cold, then it becomes the stone with rough surface • Pumic stones float on water. • Pumic stones come from Indonesia and Turkey.

Image of Stone

Continued…………. . • Indonesia’s stone color is slightly brown and Turkey’s stone is white in color. • Pumic stones are available in 3 size i. e. small 2 -3 cm, medium 3 -5 cm and large size 5 -7 cm. • pumic stone is Two to Three times of garments can be used in washing. • Every bag contains 22 kg to 25 kg and price 400/= to 425/=/ bag.

FUNCTION OF PUMIC STONES • During different garments washing like stone wash, Acid wash, Stone Enzyme wash etc. Pumic stones are used to create irregular fading effect on garments. • The pumic stones act a brushing action on the garment fabric surfaces. • The areas where more brushing action take place, there more fading or discolor effect will be developed and the areas where less brushing action take place, there less discolor effect will be developed. • The multi layer fabric areas like – Collar, Cuff, Pocket, Placket, Side seams etc. areas will be brushed more than the single layer areas. • As a result irregular fading is developed in the garments by the action of pumic stones.

STONE WASHING PROCESS A process of stone wash of 60 kg batch size of Denim Long Pant as mentioned below: First Step: PRE-TREATMENT / DESIZING • Batch size. . . 60 kg Denim Long Pant • Add water @ L : R = 1 : 9. . . 540 litres. • Start the machine. • Temperature. . . . . 60°c • Add Desizing agent @ 0. 6 gm / litre. . . . 324 gm. • Add Detergent / Antistain @ 1 gm / litre. . 540 gm. • Time. . . . 15 to 25 mts. • Drop the liquor.

Continued…… Second Step: HOT WASH • Add water @ L: R = 1: 9. . . 540 litres. • Temperature. . . . . 60°c. • Time. . . . 5 mts. Third Step: BLEACHING • 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. • Pumic stone @ ½ vol of garments. • Temperature. . . . 60°c. • Time (Depend upon the shade). . 12 to 15 mts. • Drop the liquor. • Rinse twice, each 3 minutes.

Continued………… Fourth Step: NEUTRAL WASH • Add water @ L : R = 1 : 9. . . 540 litres. • Add sodium hyposulphite @ 3 gm/litre. . . 1620 Gms. • Temperature. . . . 40°c. • Time (Depend upon the shade). . 10 to 12 mts. • Drop the liquor. • Rinse one. Fifth Step: SOFT WASH • Add water @ L: R = 1: 8. . . 480 litres. • Add Acetic Acid @ 0. 6 gm/litre. . . . . 288 Gms. • Cationic softner @ 1 gm/litre. . . 480 Gms. • Time. . . . 5 mts. • Drop the liquor. • Unload the garments to trolley.

Continued……… Sixth Step: Hydro extractor Machine Hydro extraction the garments to remove excess water from the washed garments. • Seventh Step: Drying Machine – Load 40 kg garments – Set temperature. . . . 75°c to 85°c. – Time. . . 35 to 40 mts. – Time. . . . . 10 minutes in cold dry. Eighth Step: Delivery – After quality checking garments will be delivered.

STONE ENZYME WASH Now in our Bangladesh, maximum Denim garment is washing by STONE ENZYME process. It is most popular wash for Buyers. A process of stone enzyme wash of 60 kg batch of Denim Long Pant is mentioned below: First Step: PRE-TREATMENT / DESIZING • Batch size. . . 60 kg Denim Long Pant. • Add water @ L: R = 1 : 9. . . . 540 litres. • Start the machine. • Temperature. . . . . 60°c • Add Desizing agent @ 0. 6 gm / litre. . . . 324 gm. • Add Detergent / Antistain @ 1 gm / litre. . 540 gm. • Time. . . . 15 to 25 mts. • Drop the liquor.

Continued……. Second Step: HOT WASH • Add water @ L: R = 1: 9. . . 540 litres. • Temperature. . . . . 60°c. • Time. . . 5 mts. Third Step: Enzyme and stone treatment • 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 mts. • Then temperature raise to 90°c for 1 minute. • Drop the liquor. • Rinse Twice, each 3 minutes. • Then pumic stone out from washing machine

Continued……. Fourth Step: BLEACHING • 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 mts. • Drop the liquor. • Rinse twice, each 3 minutes. Fifth Step: NEUTRAL WASH • Add water @ L: R = 1: 9. . . . 540 litres. • Add sodium hyposulphite @ 3 gm/litre. . . . 1620 Gms. • Temperature. . . . 40°c. • Time. . . . 10 to 12 mts. • Drop the liquor. • Rinse one.

Continued……. Sixth Step: SOFT WASH • Add water @ L : R = 1 : 8. . . . 480 litre. • Add Acetic Acid @ 0. 6 gm/litre. . . . . 288 Gms. • Cationic softener @ 1 gm/litre. . . 480 Gms. • Time. . . . 5 mts. • Drop the liquor. • Unload the garments to trolley. Seventh Step: Hydro extractor Machine • Hydro extraction the garment to remove excess water from the washed garments. Eighth Step: Drying Machine : – Load 40 kg garments – Set temperature. . . . 75°c to 85°c. – Time. . . 35 to 40 mts. – Time. . . . . 10 minutes in cold dry. Ninth Step: Delivery – After quality checking garments will be delivered.