Technical Specifications & Properties
The economical construction of ALPET®
With the sandwich construction method, we process the insulating structural foam core based on PET and encase it in glass-fibre reinforced, semi-crystalline thermoplastic.
Empty spaces are replaced by a foam with microscopically small air chambers.
Unique physical properties
- unrivalled low thermal conductivity
- electrical insulation properties
- very light with high stiffness and stability
- temperature resistant up to 200°C for several minutes
Resistant to chemicals and cleaning agents
- Prepas 130-720 Prelitin 750-200
- Singoli Citrus Power Cleaner
- KABE Paints Universal Thinner 5119
- KABE Colours Turpentine Substitute
- White GOSMO HD-100.411/412
- IBZ S-150 Isopropyl alcohol (substrate cleaner)
- Bider Hauser Microdosing Spray Oil
- Wieds Demysol 2012
- Ateco Tobler (diluted sulphuric acid)
- Ateco Tobler descaling aluminium
- Ateco Tobler pickling bath (diluted nitric acid and aluminium)
- Precap 950-006
- Esco 2-component aluminium adhesive
Effects in case of shear load
The following figures show the investigation of stresses in different ALPET® cross-sections. They are below the values specified in the standard. Figure 20 shows the occurring stress according to Mises under tension.
FEM calculations cross-section 1
FEM calculations cross-section 2
FEM calculations cross-section 3
FEM calculations cross-section 4
Thermal behaviour checked
The thermal effects were checked with the FEM programme. The occurring stresses are below the
permissible value, the requirement according to the standard is fulfilled by far.
Shear strength ALPET® (EN 14024)
Transverse tensile strength ALPET® (EN 14024)
Worth knowing
Standards
Suitable for the new Building Energy Act GEG (as of 1 November 2020)
Suitable for Minergie (Swiss label for buildings with minimal heating-energy consumption)
Suitable for passive house (German label for buildings with no heating-energy requirement)
Sound measurement
Our insulation bar in comparison with conventional insulation bar and profile systems:
| ALPET® | Rw (C; C tr) = 46 (-2; -6) dB |
| Reference depth 80 mm | Rw (C; C tr) = 46 (-2; -6) dB (Noryl-Steg) |
| Reference depth 70 mm | Rw (C; C tr) = 47 (-2; -6) dB (Polyamid-Steg) |
Fire behaviour
DIN EN 13505-1, Class E
Ageing behaviour tested
The ageing behaviour was extrapolated according to advanced scientific methods.
(stepped isostress tests)
Partners
Innovation project supported by:
Basic research and development by:
Verifications and suitability tests by
| Fire behaviour | (Nr. 20-001273-PR01) |
| Mechanical performance | (Nr. 20-001273-PR04) |
| Thermal insulation | (Nr. 20-001273-PR05) |