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Cartonplast in agriculture
As a covering for greenhouses and windows in workshops, stables, poultry sheds and seeding beds, Cartonplast reveals itself as a most rational and convenient material.
These are the properties of RANDOM copolymer polypropylene cellular sheets:
- High insulating capacity provided by the air cells in it (15 to 20 times more efficient than glass)
- High light transmittance (about 75% of the incident light) and greenhouse effect due tot he impenetrability of the sheet to infrared light excellent resistance to atmospheric agents (Out-of-door durability: up to 7 years with suitable protective coating).
- High compression strength
Technical characteristics of Cartonplast cellular sheets for greenhouses
Weight ........................................................................ 1100 g/sq.m
Wall thickness ............................................................. 0.45 mm
Sheet thickness .......................................................... 4.5 mm
Heat conductivity ........................................................ 0.034 Kcal/m.h C
U.V. transmittance ..................................................... 76.5% of incident light
(1) Impact resistance at 23 C ............................... 3.3 Joule
(ball drop) at 0 C ................................. 2.0 Joule*
at -10 C ............................. 1.5 Joule
Linear-expansion
coefficient (-18 C + 65 C) ......................................... 7x10^-5 cm
cm C
Lengthwise Crosswise
Tear resistance for
traction impact 23 C = 67 Joule = 25 Joule
0 C = 40 Joule = 15 Joule
-10 C = 26 Joule = 15 Joule
(1) The method is drawn from ISO TC 138, UNI PROG 351 339, and BS 4991
Standards