Sand blasting washing process

1. WELCOME MY PRESENTATION
Md. Mahmudul Hasan
ID:123-23-3201
Dep. Of Textile Engineering
TE-22 Batch
Sec: PC-A”

2. MY PRESENTATION TOPIC IS;
Sand Blasting Process of
Garments Washing.

3. SAND BLASTING:
 This is the process that also applied for
removing the color and it is done at the dry
condition of the garments.
 This process is done by air flow gun with
the help of sand.
 The high pressure sand is applied on the
specific area of the garments and
eventually the color will reduce.

6. A PROCESS OF SAND BLASTING ON
DENIM/CANVAS/TWILL GARMENTS :
 Aluminum oxide (Al2O3) is used for Sand
Blasting which is looks like sand.
 These aluminum oxides are very fine & very
hard/sharp.
 These aluminum oxides through by gun with
dry air to perform sand blasting action.
 The gun has a switch to start and stop the
flow of aluminum oxides.

7. A PROCESS OF SAND BLASTING ON
DENIM/CANVAS/TWILL GARMENTS:
 The flow of aluminum oxide on fabric surface
is done at 10-20° angles.
 The blowing angle is very important.
 The operators should have protective
standard musk, helmet, gloves, ear plug and
uniform.
 Production/hour/gun varies from 25-50 pcs
garments depend on the area, extent of
fading.
 After mechanical fading, chemical treatments

8. METHOD OF SAND BLASTING:
1.Sand Blasting,
2.Machine Sanding,
3.Hand sanding or hand brushing

9. 1.Sand Blasting: Sand blasting technique is
based on blasting an abrasive material
(Most of time sand) in granular, powdered
or other form through a nozzle at very high
speed and pressure on to specific areas of
the garments surface to be treated to give
the desired abraded look or used look.

10. 2. Machine Sanding: In this technique, a
series of cylindrical rolls in a horizontal
arrangement, either wrapped with an
abrasive paper or chemically coated with an
abrasive.

11. 3. Hand Sanding Or Hand Brushing: In
this technique, sand paper is used to
abrade surface of the denim garments
Varieties of looks and designs can be
produced by using hand sanding or hand
brushing technique.

12. THE ADVANTAGES OF SANDBLASTING :
 Easy process: The process of Sand blasting is
quite easy. You do require to a hire a
professional since you don’t know the
precautions to be taken.
 Less machinery: This process just requires a
compressor, a blasting pot and a nozzle.
 Wide applications: There are lots of
applications of sand blasting in every area.
 Perfect cleaning: This process can be used for
every material for the purpose of cleaning.

13. DISADVANTAGES OF SANDBLASTING :
 Air-borne diseases: Because of the use of
sand, the process is responsible for causing
lung diseases like silicosis.
 Ventilation: The process of sand blasting
should be done in a ventilated area to
prevent chocking.
 Harm to naked skin: This process should
not be performed in naked skin as the
particles like tiny steel balls, glass powder
etc. which are projected with high velocity
can penetrate into your naked skin.

14. Thank you