POLYCARBONATEMULTI-WALL SHEETS

AKRATHERM TECHNICAL DATA

MECHANICALPROPERTIES

Tensile strength at yield σS N/mm2

DIN 53455 >60

Tensile strength at break σR N/mm2

DIN 53455 >70

Elongation at yield εS % DIN 53455 6

Elongation at break εR % DIN 53455 >100

Flexural modulus N/mm2

DIN 53457 2300

Impact strength (IZOD notched) J/m ASTM D256 >700

Specific gravity g/cm3

DIN 53479 1,20

Refractive index nD DIN 53491 1,58

Water absorption (24 h - 23°C)(immerson) % DIN 53495 0,36

Water vapor permeability (thickness 0,1 mm, 24h) g/m2

• d DIN 53122 ~15

Heat resistance temperature VICAT VST/B °C DIN 53460 145-150

Linear thermal expansion K–1

• 10–6

VDE 0304/1 60-70

Thermal conductivity W/m°C DIN 52612 0,21

AKRATHERM can be used whereverthermal insulation, brightness and easyinstallation are required.It’s cellular structure means AKRATHERMsheets may be heavily charged. On thebasis of the UV-protected high-qualitypolycarbonate AKRATHERM is an idealbuilding material with the following cha-racteristics:

HIGH TRANSPARENCY: About 80%transparency, depending on the thickness,and excellent light diffusion. Due to thespecial surface coating on the externalside the transparency remains practicallyunchanged through time. The followingcolours are available: transparent, opalineand bronze; green and blue at request.

THERMAL INSULATION: The geometri-cal structure of AKRATHERM sheets withsingle chamber, or two,-three-or four-walledcavity structure, combined with the lowheat transmission value of polycarbo-nate, ensure a particularly high thermalinsulation (up to U =1,4 W/m2 K) andtherefore the best choice for energy saving.

PRACTICALLY UNBREAKABLE: AKRA-THERM offers considerable impactstrength and a high resistance againstmechanical stress.

LIGHTNESS: AKRATHERM is particu-larly light and weighs from 0,8 kg/m2 upto 3,7 kg/m2, depending on thickness.

HIGH WEATHER RESISTANCE: AKRA-THERM is UV-protected and offersweather resistance in temperaturesranging from -40°C up to +120°C.

HARDLY FLAMMABLE: Conforming tocertificate P-ND S04-488 of the Institut

für Bautechnik in Berlin AKRATHERMsheets are hardly flammable accor-d ing to DIN 4102 B1 and BS 476Part 7 Class 1. Polycarbonate does notemi t tox ic gases.

RESISTANCE TO CHEMICAL AGENTS:Resistant against low concentrate mine-ral and organic acids, detergents, soapand salt solutions, fats and oils, aliphatichydrocarbons and alcohol. Not stabilizedagainst aromatic hydrocarbons andstrong alkali.

SHEET EXPANSION: 0,065 mm/m°K,that means 3 mm (bronze 5 mm!) per metrelength in continental European climate.

PROCESSING POSSIBILITIES: Thesheet may be cold curved, sawed andbored with common tools. It is light andconsequently easy and fast to erect.

ACCESSORIES: For the sealing of the openhollow chambers U-profiles and/or adhesivealuminium tape are used. For the jointingof the polycarbonate sheets aluminiumand polycarbonate profiles are suitable.

APPLICATIONS AND USE: AKRA-THERM cellular sheets offer constructivepossibilities in every imaginable surface.Nowadays the requirements in the fieldsof new building and clearance makemulti-wall sheets indispensable.AKRATHERM is particularly suitable forglazing and roofing of greenhouses,schools, sport sites, agricultural and indu-strial buildings, as well as vaulted andprojecting roofs, skylights, solar panels,car washing-plants, applications in thefields of leisure time and “do it yourself”.

The values and recommendations given are to the best of our knowledge, true and accurate. Since the conditions under which AKRATHERMmay be used are beyond our control, recommendations are made without guarantee. We reserve the right to change specifications at any time.

The isolating multi-wall sheet for all typesof transparent surfaces

PHYSICALPROPERTIES

THERMALPROPERTIES

PROPERTIES KIND OF TEST UNITS STANDARD VALUES

830/

4

AKRAPLAST Sistemi S.p.A.I - 20026 NOVATE MILANESE (MI) - Via Cascina del Sole, 70Tel. + 39 / 02.35.13.91.1 - Fax + 39 / 02.35.13.91.50E-mail: info@akraplast.com - www.akraplast.com

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AKRATHERM STANDARD SIZESTHICKNESS 4 6 8 10 10 16 16 20 25 32(mm) ± 0,5 ± 0,5 ± 0,5 ± 0,5 ± 0,5 ± 0,5 ± 0,5 ± 0,5 ± 0,5 ± 0,5

OPALINE (%) 77 77 78 70 61 54 56 52 25 39

BRONZE (%) 59 59 61 56 - 40 46 - 35 -

STANDARD LENGTH (mm) 6000 6000 6000 6000 6000 6000 6000 6000 6000 6000

WIDTH (mm) 2100 2100 2100 2100 - 2100 2100 2100 2100 -- - - 2100 1220 - 1200 - 1230- - - 1250 1250 - - - 1200 -- - - - - 1250 - -

m2 WEIGHT (g) 800 1300 1500 1700 1750 2500 2700 3100 3400 3700

CROSS-SECTION (Type) double double double double quadruple x triple six five XX

(U= W/ m2 K) 4,1 3,7 3,3 3,1 2,5 2,0 2,4 1,7 1,7 1,4

TRASPARENT (%) 79 79 81 80 68 66 74 58 60 54

THERMAL INSULATION

LIGHT TRANSMISSION