Plain HMR Board || Particle Board Manufacturers in Chennai, Tamilnadu & India, Chopralam

Plain HMR Board

Plain HMR Board – Exterior Grade

Exterior grade is recommended for exterior application where the panel is exposed to moisture and high humidity. It has high water resistant properties. On Customer’s specifications, the boards can be treated to make them fungus & termite resistant.

Applications:

Homogeneous structure and uniform properties ensure equal strength in all directions Dimensional stability in variable atmospheric conditions Absence of knots or grains

Has high screw retention strength on face and edges Does not splinter or flake Can be moulded, profiled, routed, carved and grooved like “Natural Wood” .It can also be laminated,veneered, —-lacquered, painted, printed or coated with PVC.

Applications:

Furniture,Partition,Flooring & Ceiling,Wall paneling,Kitchen cabinets and shutters.

Physical and Mechanical and Mechanical Properties of

PLAIN HMR BOARDS

S.No	Properties	Unit	Plain HMR Boards Specifications As Per IS : 12406-2003 GRADE 1(EXTERIOR GRADE)
1.	Bulk Density	Kg/m3	500-900
2.	Variation From Mean Density	%	+/-10
3.	Moisture Content	%	5 to 15
4.	Variation from mean moisture content	%	+ / – 3
5.	Water absorption (Max.)	%	—-
	a) After 2 hrs. Soaking	——-	6
	b) After 24 hrs. Soaking	——-	12
6.	Linear expansion (swelling in water)	%	——-
	a) Due to general absorption after 2 hours soaking	———	———
	1) Thickness	——-	4
	2) Length	——-	0.3
	3) Width	———	0.3
	b) Due to surface absorption	———	4
7.	Modulus of rupture (Min.)	N/mm2	——-
	a) Upto 20 mm thickness	——-	28
	b) Above 20 mm thickness	——-	25
8.	Tensile Strength Perpendicular to surface (min)	N/mm2	——-
	a) After cyclic test	——-	0.4
	b) After Accelerated Water Resistance	——-	0.25
10.	Screw withdrawal strength (Min.)	N/mm2	——-
	a) Face	——-	1500
	b) Edge	——-	1250
11.	Thermal Conductivity (max) kcal-cm/m2/h/ °C	——-	0.12

STANDARD SIZE:
2440mm x 1830mm (8’x6′)
2440mm × 1220mm (8’x4′)
2440mm x 915mm ( 8’x3′)
1830mm x 1220mm (6’x4′)

STANDARD THICKNESS:
8mm	11mm	12mm
17mm	18mm	25mm
30mm		35mm

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