GABROVNITCA chipboard

There is advanced technology and experience of years behind the GABROVNICA chipboards, which became numer one in demand with its quality in Bulgaria and many other countries in the world. The wood raw material first cut into chips in chipping machine, and then taken into wet chip silos. The chips dried in the dryers are sorted and top and medium layer chips are stored in separate silos. Later they are mixed with glue and other chemicals and the spreading machine, which spreads the top, roughly forms the board and medium layers on the belt and then produced as boards by press machine under heat and pressure. Then, cooling, sizing and piling processes are performed. After leaving for test 1-3 days for conditioning, the boards are sanded and prepared for sale.

 REQUIREMENTS FOR BOARDS FOR INTERIOR FITMENS (INCLUDING FURNITURE) FOR USE IN DRY CONDITIONS

Property

Test method

Unit

Ranges of nominal thickness (mm)

3 to 4
>4 to 6
>6 to 13
>13 to 20
>20 to 25
>25 to 32
>32 to 40
>40

Tolerance of Nominal Dimensions

TS EN 324-1

mm

 

Thickness

TS EN 324-1

mm

±0,3

Lenght and Width

TS EN 324-2

mm

±5

Squarencess Tolerances

TS EN 324-2

mm/m

2

Tolerances on mean density whitin a panel

TS EN 323

%

±10

Internal Bond

TS EN 319

N/mm2

0.45

0.45

0.40

0.35

0.30

0.25

0.20

0.20

Bending Strenght

TS EN 310

N/mm2

13

15

14

13

11,5

10

8,5

7

Moduls of elasticity

TS EN 322

N/mm2

1800

1950

1800

1600

1500

1350

1200

1050

Moisture

TS EN 322

%

5 - 13

Formaldehyde potantial (preparator Value)

TS EN 120

mg/100gr.

CLASS I <= 8mg/100gr.

CLASS II > 8mg./100gr. <= 30 mg/100 gr.

Note: The values are characterised by a moisture content in the material corresponding to a relative humidity of 65 % and temerature of 20 C.