(1) The document discusses the development of composite panels using sawdust and PVC powder. (2) It details the mixing, molding, and testing processes used to create panels with varying wood-PVC ratios and processing parameters. (3) The results showed that panels produced at 160°C and 5kg/cm2 pressure with a 50% PVC content by weight of wood achieved the highest strength and quality metrics in compliance with standards.

1. The Development of Composite Panels
by Using Sawdust and PVC Powder
By : L a s i n o

2. The Development of Composite Panels by Using Sawdust and PVC Powder
Introduction
1. High amount of wood
manufacture waste (dust
& chips)
2. The waste can be used
as fuel
3. Building material
innovation needed in
construction works
• alternative building components
• reducing the environment impact
The
development
of composite
panels by
using sawdust
and PVC
powder,
Background
Outcome Expected

3. The Development of Composite Panels by Using Sawdust and PVC Powder
Material Resources
Sawn Timber Manufacture
Chipping Grinding Wood Dust

4. The Development of Composite Panels by Using Sawdust and PVC Powder
Research Objective
1. To provide building component alternative
2. To produce good quality and cheap composite
boards
3. Wood waste optimizing as building materials
4. Reducing the environment impacts
5. To fulfill building materials needed in housing and
building construction
6. To prevent forest deterioration
Materials
1. Dust & chips wood waste form from timber
manufacture
2. The PVC powder from recycling agent & grinding
process (passed 50 & 30 mesh sieve)

5. The Development of Composite Panels by Using Sawdust and PVC Powder
• The wood powder and PVC powder blended in
variously content from 30 to 50% by weight of
wood,
• To achieve the good mixture, it is possible to
add the liquid wax as a substitution material,
• Blending process by using mixer takes 3 to 5
minutes a batch.
Methods – Mixing Process

6. The Development of Composite Panels by Using Sawdust and PVC Powder
Methods – Molding
1. Panel size : 240 cm x 120 cm x thickness.
2. Mixture composition : (30:70), (40:60), and (50:50).
3. Amount of specimen : 6 pcs/ each composition
4. Molding temperature : 160oC
5. Molding pressure : 5 kg/cm2
Step-2; Full-Scale Machine (Hot Press Machine)
Methods – Molding
1. Panel size : 60 cm x 60 cm x thickness.
2. Mixture composition : (30:70), (40:60), and (50:50).
3. Amount of specimen : 6 pcs/ each composition
4. Molding temperature : 150, 155, 160 and 165oC
5. Molding pressure : 5 and 10 kg/cm2
Step-1; Small-Scale Machine (Electrical Hot Press)

7. The Development of Composite Panels by Using Sawdust and PVC Powder
Methods – Molding
Step-1; Small-Scale Machine (Electrical Hot Press)
Raw Materials
Composing Molding Production

8. The Development of Composite Panels by Using Sawdust and PVC Powder
Methods – Molding
Step-2; Full-Scale Machine (Hot Press Machine)
Raw Materials
Mixing Molding Production

9. The Development of Composite Panels by Using Sawdust and PVC Powder
Result & Discussion
Step-1; Small-Scale Machine (Electrical Hot Press)
Table 1-a - Molding Process by 5 kg/cm2 Pressure
No Mixture
Composition
Pressure Temperature Specific
Gravity
Bending
Strength.
Bonding
strength
Moisture
content
PVC : Sawdust kg/cm2 oC Gr/cm3 Kg/cm2 Kg/cm2 %
1 30 : 70 5 150 0.96 54.2 8.6 12.69
2 155 0.98 68.7 12.9 10.01
3 160 1.06 83.8 14.2 8.62
4 165 1.04 82.4 12.7 7.64
1 40 : 60 5 150 0.97 90.7 12.4 11.12
2 155 0.99 112.6 17.6 8.41
3 160 1.04 134.8 32.4 7.34
4 165 1.03 122.4 28.7 7.14
1 50 : 50 5 150 0.97 96.2 21.2 9.10
2 155 0.97 126.6 36.2 8.12
3 160 0.99 165.4 53.2 6.02
4 165 0.99 161.4 49.8 5.66
Note : PVC : Poly Vinyl Chloride

10. The Development of Composite Panels by Using Sawdust and PVC Powder
Result & Discussion
Table 1-b - Molding Process by 10 kg/cm2 Pressure
Note : PVC : Poly Vinyl Chloride
Step-2; small-Scale Machine (Hot Press Machine)
No Mix
proportion
Pressure Temperature Specific
Gravity
Bending
Strength.
Bonding
strength
Moisture
content
PVC : Sawdust kg/cm2 oC Gr/cm3 Kg/cm2 Kg/cm2 %
1 30 : 70 10 150 0.99 59.8 12.1 12.02
2 155 1.02 79.6 14.2 10.01
3 160 1.04 86.1 18.6 9.00
4 165 1.04 82.0 17.9 7.04
1 40 : 60 10 150 0.97 94.2 16.4 9.80
2 155 0.99 124.6 18.9 9.18
3 160 1.01 151.2 29.2 7.64
4 165 1.01 148.6 8.6 6.01
1 50 : 50 10 150 0.98 108.4 21.4 8.04
2 155 0.99 136.4 26.2 7.08
3 160 1.02 172.2 32.4 6.02
4 165 1.02 168.9 34.2 5.06

11. The Development of Composite Panels by Using Sawdust and PVC Powder
Result & Discussion
Figure1 – Correlation Between Strength & Molding Temperature
Forming Process with Pressure
5 kg/cm
2
0
40
80
120
160
200
145 150 155 160 165 170
Temperature (0
C)
BendingStrength
(kg/cm2
)
Bending(Proporsi30:70) Bending(Proporsi40:60) Bending(Proporsi50:50)
Forming Process with Pressure
10 kg/cm
2
0
40
80
120
160
200
145 150 155 160 165 170
Temperature (0
C)
BendingStrength
(kg/cm2
)
Bending (Proportion 30:70) Bending (Proportion 40:60) Bending (Proportion 50:50)

12. The Development of Composite Panels by Using Sawdust and PVC Powder
Result & Discussion
Table 1-b - Molding Process by 5 kg/cm2 Pressure at 160 oC
Step-2; Full-Scale Machine (Hot Press Machine)
No Mixture
Compositi
on
Specific
Gravity
Water
Absorp-
tion
Thickness
Swelling
Bending
Strength
*)
Bonding
strength
*)
Moisture
content
Nail
withdraw
*)
PVC :
Sawdust
g/cm3 % % Kgf/cm2 Kgf/cm2 % kgf
1 30 : 70 1,01 47,7 62,5 78,3 13,9 9,02 22,6
2 40 : 60 1,01 34,1 25,0 114,8 28,2 8,40 29,7
3 50 : 50 0,98 5,23 15,0 153,9 48,0 6,20 32,6
Standard
requirement
Min. 0,40 - - Min. 50 Min. 25 Max. 15 -
Note : PVC : Poly Vinyl Chloride
*) : average of 6 samples

13. The Development of Composite Panels by Using Sawdust and PVC Powder
Result & Discussion
Figure2 – Correlation between Strength & Mixture Composition
Test Result of Full Scale Panels
Forming Process with Pressure 5kg/cm2
at 160
0
C
0
40
80
120
160
200
0 1 2 3 4
Mix Proportion
Strength(kg/cm2
)
Bending Bonding
30:70 40:60 50:50
Mixture Composition

14. The Development of Composite Panels by Using Sawdust and PVC Powder
• The bending strength inclines by increasing of PVC
composition in mixture  all wood particle parts
covered by PVC as a bonding material
• The optimum molding process is at 160 oC and 5
kg/cm2 pressure. It indicates that molding
temperature and pressure determine the panel
quality
• The best mixture is a rate of PVC 50% by weight of
wood dust. The product at this condition shows the
figures of bending and bonding structure, which
comply to the standard requirement. It indicates
that PVC content in mixture composition
determines the panel quality
S . y . n . t . h . e . s . y . s

15. The Development of Composite Panels by Using Sawdust and PVC Powder
• Sawdust is a potential board raw material, which is
effectively bonded by PVC
• Sawdust and PVC powder composite panels is liable to
be cheaper, easier supplying, and good quality materials
• The optimum composite panels molding process is at
160 oC and 5 kg/cm2 pressure.
• The best mixture of composite panels is a rate of PVC
50% by weight of wood dust. It indicates that PVC
content in mixture composition affects the bending and
bonding structure, which comply to the standard
requirement.
• The utilization of wood waste as composite panels might
not strongly reduce the environment impact only, but
also prevent the forest deterioration
C.o.n.c.l.u.s.s.i.o.n

16. The Development of Composite Panels by Using Sawdust and PVC Powder
T e r I m a K a s I h