TOMBO™ No. 8300 FIRE PROOF CLOTH

Forte

It offers excellent resistance to molten metal.
Lightweight and flexible.
It offers excellent workability.
*We also offer custom-designed sewn products. Please consult us if you have particular specifications in mind.

Application

Prevents the scattering of welding sparks
Prevents the scattering of slag when cutting
Equipment protection and covering
Non-combustible curtain

Product specifications and quality characteristics

TOMBO No.	Product name	Coatings	Size Thickness × width × length	Class A Test (Note 1)	Mass (g/m2)	Density (roll/25 mm)		Tensile strength (N/25mm)
TOMBO No.	Product name	Coatings	Size Thickness × width × length	Class A Test (Note 1)	Mass (g/m2)	Vertical	Horizontal	Vertical	Horizontal
8300-S	Fire-Proof Cloth S	None	0.65t×810mm×25m	Flame ignition: none	625	54	40	403	377
8300-SW	Fire-proof cloth SW	Included (Special resin on one side)	0.70t×810mm×25m	Flame ignition: none Through holes: none	670	54	40	1519	372

Note 1: JIS A 1323 Flame retardant testing method for spark droplets of welding and gas cutting on fabric sheets in construction works
*These are our actual measurement values. They are not standard values.

Comparison with carbon-based cloth

A test was carried out to compare the product with a carbon-based cloth that is typically used at welding sites.
Specimen
FIRE PROOF CLOTH S (Nichias product)
FIRE PROOF CLOTH SW cloth surface (Nichias product)
FIRE PROOF CLOTH SW coating surface (Nichias product)
A typically used carbon-based cloth
Test conditions and test method
JIS A 1323 Class A equivalent
The four test specimen types were used to assess the flame retardancy of sparks generated when a 9mm-thick steel plate for spark generation was cut.
Judgment criteria
No through holes that are harmful in terms of ignition and fireproofing.
Test results
No through holes that are harmful in terms of ignition and fireproofing were made in either test specimen during the test (about 48 seconds long).
However, smoke was observed after the “typically used carbon-based cloth” was cut on its own.
A video of the test is below.