SikaDamp®-140 ALV
SikaDamp®-140 ALV is a heavy-duty, highly flexible sound damping system based on bitumen without reinforcement inserts. The bitumen foil is filled with mineral material. SikaDamp®-140 ALV is equipped with a high-grade self-adhesive system based on acrylate. An aluminum-vaporized PP-fleece is applied as surface finish.
- Sound deadener
- Sound damping
- High density for advanced damping results
- Aluminum-vaporized PP-fleece as antiblocking equipment
- Acrylic based pressure sensitive adhesive layer
PRODUCT BENEFITS
- Sound deadener
- Sound damping
- High density for advanced damping results
- Aluminum-vaporized PP-fleece as antiblocking equipment
- Acrylic based pressure sensitive adhesive layer
Areas of Application
SikaDamp®-140 ALV was initially developed for the noise damping in the field of industry solutions, such as air ducts, partition walls, doors, window sills, ship building and railway solutions. It is as well suitable for automotive solutions, in household and small appliance sector and in many other business fields, where damping with high density bitumen foil is required. This product is suitable for experienced professional users only. Tests with actual substrates and conditions have to be performed ensuring adhesion and material compatibility.Product Details
| Chemical base | Polymer modified bitumen, mineral filler | |
| Color (CQP001-1) | mastic layer PP-fleece | Black Silver |
| Density (CQP006-4) | mastic layer | 1.95 g/cm³ |
| Top layer thickness (DIN ISO 1849-1/2) | 0.38 mm | |
| Area weight (CQP008-4) | as requested by customer | 2.8 ─ 5 kg/m² A |
| Application temperature | substrate, product | 20 ─ 35 °C |
| Loss factor (ISO 6721-3) | see diagram 1 | |
| Flammability (DIN 75200) | 100 mm/min | |
| Shelf life | 4 months |
| CQP = Corporate Quality Procedure | A) customer may request based on available area weight |
CHEMICAL RESISTANCE
SikaDamp®-140 ALV has a good resistance against water, alcohol and diluted acids and bases. If exposure is expected, tests to determine specific resistivity are required.
Application
Surface preparation
Surfaces must be clean, dry and free from grease, oil, water and dust.
Application
Ensure proper and full surface adhesion over the entire geometry of the part by pressing the parts using a press roll.
Application may only be processed on material and substrate temperatures between 20 °C and 35 °C. If the bituminous mat must be applied outside the recommended temperature conditions, a validation of the specific application is required.
For information regarding typical loss factors, see diagram 1. The layer structure is shown in figure 1.
Diagram 1: Loss factor SikaDamp®-140 ALV at 200 Hz
Figure 1: 1) Vaporized PP fleece, 2) Bitumen based PSA, 3) Bitumen heavy foil, 4) PSA
STORAGE CONDITIONS
SikaDamp®-140 ALV has to be stored dry and protected from UV light. The storage temperature is between 0 °C and 35 °C. Consider, that at temperature below 15 °C the bitumen starts to get brittle and can break. Therefore, if products are sourced from a cold storage it must be handled with care.
Ensure that the product has reached the defined application temperature before it is applied. This might be realized by storing the parts for 24 to 48 hours prior application at the assembly line.
Note: Storage outside of standard conditions can affect the shelf life.