PTEE Roofing tensile material

SKYTOP is the brand name of Chukoh’s PTFE fabric for roofing and shedding materials. It is Japan’s first permanent architectural fabric developed by Chukoh for membrane structures. It is a composite material produced by impregnating and sintering fluoroplastic on glass cloth (B yarn) by a unique method developed by Chukoh. Various types and grades are available according to the design and size of membrane structures.

Item	FGT-1000	FGT-800	FGT-600	FGT-250-1	FGT-250A-1	Test method
Thickness(mm)(nominal)	1.00	0.80	0.60	0.35	0.40	ISO 2286-3
Weight (g/m2)(nominal)	1700	1300	1000	470	600	ISO 2286-2
Tensile strength (N/2.5cm)(minimum)	4400	3520	2940	1920	1640	ASTM D 4851
Tensile strength (N/2.5cm)(minimum)	4000	2820	2350	1440	1250	ASTM D 4851
Tensile strength (N/5cm)(minimum)	8200	7000	5800	3600	3000	ISO 1421 or DIN 53354
Tensile strength (N/5cm)(minimum)	7500	6000	4600	2700	2300
Tear strength (N)(minimum)	360	260	200	170	110	ASTM D 4851
Tear strength (N)(minimum)	400	260	200	100	80	ASTM D 4851
Tear resistance (N)(minimum)	500	400	350	280	190	DIN 53363
Tear resistance (N)(minimum)	550	400	380	180	140	DIN 53363
Solar transmission after bleaching (%) (nominal)	10	12	15	19	18	ASTM E 424
Solar reflectance after bleaching (%) (nominal)	82	80	78	78	78	ASTM E 424
Air permeability (cm3/cm2･s) (nominal)	-	-	-	8	-	JIS L 1096
Sound absorption (NRC)(nominal)	-	-	-	0.45	-	JIS L 1096

Characteristics

Non-flammable

The fluoroplastic membrane FGT series is a combination of PTFE with self-extinguishing property and glass cloth fiber with heat resistance. Because of the above reason, FGT series has been authorized as non-flammable material.

Sound absorbency

Since the fluoroplastic membrane of the interior material has the moderate pliability and permeability, you can increase the sound effects in the building if the interior material of the double membrane structure is used.

Translucency

The natural light in the building through the fluoroplastics membrane is the natural diffused light and it creates a soft ambiance with few shadows

Thermal characteristics

Since the fluoroplastic membrane reflects the most of solar energy, it can control the heat condition into the building. It is expected to improve heat insulating effect by making double membrane structures using fluoroplastic membranes of the interior material.

Toughness

Generally, as the diameter of the fiber decreases, the tensile strength per unit area increases. Fluoroplastics membrane uses B yarn which is the thinnest glass fiber in the world. It is a membrane material with enough strength and high safety.

Self-cleaning property

The dust and air contaminant deposited on the surface of the fluoroplastic membrane are washed away by the rain. Hence, no need for special cleaning and the beautiful appearance can be maintained for a long period of time.