6640 NMN Polyester Film/Polyaramide Fibre Paper Composite Insulation Paper

6640 Polyester film/polyaramide fibre paper flexible laminate (NMN) is a three-layer flexible laminate in which each side of polyester film (M) is bonded with one layer of polyaramide fibre paper (Nomex). Besides the 6640 NMN, we also produce and supply 6630 (B-class DMD), 6641 F-DMD, 6643 DMD100, 6643 DMD100, 6650NHN, DM, NM, NH,etc.

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Description

This product has excellent electrical insulating properties, heat resistance, mechanical strength and impregnated property.

The properties (mechanical strength, breakdown voltage, flexibility and stiffness) of NMN are different for using

different nominal thickness’ polyester film. The thickness of the polyester film should be clearly indicated in purchasing

order or contract.

Item		Unit	Requirement
Nominal thickness		mm	0.15	0.17	0.19	0.22	0.24	0.26	0.31	0.37	0.41
Thickness tolerance		mm	±0.022				±0.024	±0.026	±0.031	±0.037	±0.041
Grammage		g/m2	150±18	170±20	200±24	230±27	270±32	305±36	360±43	450±54	515±61
Film nominal thickness		um	36	50	75	100	125	150	188	250	300
Tensile strength	MD no bending	N/10mm	≥150	≥150	≥170	≥190	≥220	≥240	≥270	≥330	≥370


	MD after bending		≥90	≥90	≥105	≥120	≥150	≥180	≥200	≥300	≥330
	TD no bending		≥80	≥90	≥100	≥110	≥130	≥170	≥200	≥250	≥300
	TD after bending		≥70	≥70	≥90	≥100	≥120	≥150	≥150	≥200	≥230
Elongation (%)	MD	%	≥15				≥3

	TD		≥20					≥10
Breakdown voltage	No bending	KV	≥7	≥8	≥11	≥12	≥14	≥16	≥19	≥23	≥25

	After bending		≥6	≥7	≥9	≥10	≥12	≥14	≥15	≥18	≥19
Delamination		—	No Delamination, no bubble or other defects
Heat affected (180±2℃) 10min			No Delamination, no bubble, no adhesive flow
Long-term heat resistance (temperature index TI)			≥155
Weight and area conversion		m2/Kg	7.23	6.33	5.18	4.39	3.8	3.36	2.85	2.28	1.97