Soundproofing membrane K-FONIK ST GK
Description
K-FONIK ST GK is a soundproofing system consisting of ST elastomeric foam and a GK coating—a high-density rubber-based membrane. This combination, with optimally matched characteristics, provides maximum soundproofing for utility systems at low thicknesses. K-FONIK ST GK does not contain lead or harmful impurities and poses no health hazard. The material is easy to work with, does not crumble, is easy to cut, and has no unpleasant odor.
Due to its very high sound-insulating effect, the material has found wide application as:
- soundproofing of ventilation and air conditioning systems and ducts;
- soundproofing of internal drains, sewer pipes and other pipelines
- soundproofing of ceilings, walls, floors
- soundproofing of equipment housings
K-FONIK ST GK is produced in the following configurations:
- K-FONIK ST GK 068, 27 mm: GK 2 mm + ST 25 mm.
- K-FONIK ST GK 070, 18 mm: GK 2 mm + ST 16 mm.
- K-FONIK ST GK 072, 12 mm: GK 2 mm + ST 10 mm.
- K-FONIK ST GK 074, 8 mm: GK 2 mm + ST 6 mm.
Installation can be accomplished using either mechanical fastening or adhesive. This is also available with a pre-applied adhesive layer (AD index).
| Technical parameters | Values |
|---|---|
| Sound insulation index (Rw), dB | 26 |
| Flammability group | Г1 |
| Temperature range, °C | from -40 to +70 |
| Delivery form, m | 1,0 х 2,0 |
| Thickness, mm | 8, 12, 18, 27 |
| Color | Black |
| Dynamic modulus of elasticity E d, MPa under loads of 2000 N/m 2 | 0,30 |
| Dynamic modulus of elasticity E d, MPa under loads of 5000 N/m 2 | 0,80 |
| Relative compression ε d, under loads of 2000 N/m 2 | 0,12 |
| Relative compression ε d, under loads of 5000 N/m 2 | 0,14 |
Acoustic properties of the K-FONIK ST GK 072 material

| Frequency, Hz | R, dB |
|---|---|
| 100 | 16,2 |
| 125 | 17,3 |
| 160 | 16,7 |
| 200 | 17,6 |
| 250 | 17,4 |
| 315 | 17,6 |
| 400 | 20,7 |
| 500 | 22,9 |
| 630 | 24,2 |
| 800 | 25,8 |
| 1000 | 26,5 |
| 1250 | 27,8 |
| 1600 | 29,3 |
| 2000 | 28,9 |
| 2500 | 30,2 |
| 3150 | 33,3 |
| 4000 | 35,0 |
| 5000 | 35,9 |



















