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home Wood Based Panels MDF

Wood Based Panels

MDF

Thickness (mm)
2.5-32.8
Size (mm)
2440 x 1220

Packing Info Data Sheet

01. Application

Dongwha Medium Density Fibreboard (MDF) is an engineered wood panel product. It is specially manufactured for furniture and joinery industries. The homogenous nature of Dongwha has consistency from surface to core. And its versatility allows intricate and precise machining and finishing techniques when producing high quality furniture, cabinetry components, craft work and flooring.

The overall strength and smooth surface of Dongwha make it suitable for painting to achieve high quality finishing and provide a uniform substrate for overlaying. Furthermore, it can be worked easily with all conventional woodworking and hand tools.

We also manufacture low emission product (E1, E0, CARB). Its formaldehyde content of standard grade MDF can vary according to the nature of the urea formaldehyde or other resin used as a binding agent. Low formaldehyde MDF, is recommended for all applications where the ventilation is likely to be restricted, where damp conditions or high ambient temperatures prevail or where the occupants of a building have special needs, in sheltered accommodation, schools and hospitals, for instance.

The binder or resin used for these types of product are developed to ensure they meet specific formaldehyde emission requirements but at the same time maintain the overall strength and the smoothness of the surface.

02. Process

step.1- Crushing, step.2- Particles, step.3- Drying, step.4- Sorting, step.5- Coating, step.6- Molding, step.7- Pressing, step.8- Grinding, step.9- Cutting, step.10- Inspection, step.11- Shipment

03. Specification

<Physical & Mechanical Properties of Fibreboard>

detail view
Mechanical
Properties
Test
Method
Unit ≥ 2.5 -
4.0
> 4.0 -
6.0
> 6.0 -
9.0
> 9.0 -
12.0
> 12.0 -
19.0
> 19.0 -
30.0
Thickness tolerance BS EN
324-1
mm ±0.2
Size tolerance
(length & width)
BS EN
324-1
mm a) within 5mm (length) & within 2mm (width) for free trim panel
b) +2 mm (width) and + 5mm (length) for nett size panel
Squareness BS EN
324-2
mm/m <1.5
Squareness
(diagonal)
BS EN
324-2
mm < 5
Average density BS EN
323
kg/㎥ 800-860 780-840 760-800 720-760 700-740 650-690
Board moisture BS EN
322
% 5-8
Modulus of Rupture BS EN
310
N/㎟
Ave
23 23 23 22 20 18
Modulus of elasticity
in bending
BS EN
310
N/㎟
Ave
NA 2700 2700 2500 2200 2100
Internal bond (dry) BS EN
319
N/㎟
Ave
0.65 0.65 0.65 0.60 0.55 0.55
Screw holding Face BS EN
320
N/㎟
Ave
NA NA NA NA 1050 1000
Screw holding Edge BS EN
320
N
Ave
NA NA NA NA 850 700
Thickness swelling
(24hr)
BS EN
317
%
Max
35 30 17 15 12 10

<Formaldehyde Emission of Fibreboard>

detail view
Properties Test Method /
Unit
Classification MDF MDF
LF
MDF
LG
MDF
MR
MFB
Perforator Method BS EN 120
mg/100g
E1≤9.0
E2>9.0≤30
E3>30
Desiccators Method JIS A 1460
mg/L
F****
Ave ≤ 0.3 Max ≤0.4
         
F***(E0)
Ave ≤ 0.5 Max ≤0.7
F**
Ave ≤1.5. Max ≤2.1
F* >2.1
CARB
(Small Chamber
Method)
ASTM D 6007
ppm
Phase 2 MDF Thin Board
< 8mm < 0.13
Phase 2 MDF Thick Board
> 8.1mm < 0.11

- NOTES :The perforator values in this table apply to panels with moisture contents of 6.5%