PANELS insulating sandwich type panels designed for the construction of storage of agri-food products, cold rooms and refrigerated warehouses.

SPECIFICATION OF COLDSTORE PANELS (Tiêu chuẩn kỹ thuật của Panel kho lạnh)

NAME: BIG SYSTEM.

THICKNESSES: mm 40, 60, 80, 100, 120, 150, 180, 200 and 240.

MODULAR UNITS: two widths available, 1160 or 1120 

TOTAL WIDTH: respectively 1185 and 1145 mm.

LENGTHS: minimum 2000mm, maximum 14000 mm.

ASPECT: Two micro-ribbed faces, smooth on request with micro-ribbing on joint.

JOINTS:

Tongue and groove, fitted with profiling of the sheet metal along the long edges.

Thickness up to 120 mm for positive temperatures, with simple fitting.

Thickness from 150 to 240 mm for negative temperatures with double fitted joint (labyrinth), during assembly a double gasket is applied in a material with delayed expansion or a bead of monocomponent polyurethane.

STANDARD COATING:

PR: White pre-painted hot galvanized steel sheet, Colour Ral 9010, Polyester varnish 25 μ, Colour diff. ΔE < 1.

Paint thickness 25 μ. Color difference ΔE  < 1.

Brilliance 47/53 Gloss (Gardner 60 degree Glossmeter). Paint hardness ECCA T4/1985 method Koh-i-noor = H -2H.

OPTIONAL COATINGS:

Hot galvanized sheet metal with Sendzmir system (ZN).

Hot galvanized sheet metal plasticized with PVC film 110 μ color white Ral 9010 (PL).

Stainless sheet steel type AISI 304-2B (IX).

Stainless sheet steel type AISI 304 plasticized with PVC film 110 μ color white Ral 9010 (PX).

Stainless steel type AISI 304, white pre-painted sheet, colour Ral 9010, Polyester varnish 25 μ (VX).

ADHESION OF FOAM TO SHEET METAL:

For better adhesion of the polyurethane to the sheet metal the processing cycle includes treatment of the inner surfaces with the so-called “k”

effect which alters the surface tension of the sheet metal and makes it more receptive to the foam. The adhesion value after treatment is da N/mm2 1,0 ± 0,2  (100 KPa).

INSULATION:

Standard rigid polyurethane foam (PUR), Option rigid poly- isocyanurate foam (PIR). Density 41 kg/m3 ± 10%.

Initial thermal conductivity λ = 0.023 W/m K. Closed cells 95%.

Compression resistance daN/mm2 1,5 ± 0,2 (150 KPa).

Reaction to fire Fire reaction Standard panel with PUR insulation, Euroclass C s3 d0, Fire reaction Option panel with PIR insulation, Euroclass B s2 d0. CFC free.

Coefficient of Thermal Trasmission K (λ = 0.023 W/m K)

                                                                                              THICKNESS           K COEFFICIENT W/m²/°C

- Air-conditioned industrial buildings                                          60mm                           0.40 

- 0 °C cold room walls                                                              80mm                           0.27 

- 20 °C cold room walls                                                           150mm                          0.21

- 30 °C cold room walls                                                           180mm                          0.17 

- 45 °C cold room walls                                                           200mm                          0.14