Inspection item(Unit)

Normal Value and Allowance

                  Experimental value

Reference standard

Mass per unit(g/m²)

≥400

443

GB/T4669-2008

Hydrostatic pressing(kPa)

≥50

≥50

FZ/T01004-2008

Resistance to blocking

Tolerance to mild adhesion

Non-adhesion

FZ/T01063-2008

Resistance to low temperature(-25°C×3min)

Non-delamination, non-break

non-break

FZ/T01007-2008

Breaking strength

(N/5×20cm)

longitude

≥1000

1980

GB/T3923.1-1997

latitude

≥1000

1480

Tear strength

(N)

longitude

≥40

163

GB/T3917.3-1997

latitude

≥35

77

Flame resistance

longitude

longitude

≤15

0.2

GB/T5455-1997

latitude

0.2

Afterglow time(S)

longitude

≤15

0.0

latitude

0.0

Damaged length(mm)

longitude

≤150

102

latitude

118

Meltdown cast

Non-tolerance to burn of absorbent cotton or flame resistance

Not give rise to burn of absorbent cotton or smoldering