Yarn

Single yarn

E-glass yarn

■ For printed wiringboards

Nittobo's E-glass yarn for printed wiringboards consists mainly of single yarn produced by twisting strands that comprise 4.0–7.4µm filaments. Its E-glass yarn products, which excel in electric insulation, heat resistance, tensile strength, and dimensional stability, are generally used for printed wiringboards. Nittobo offers workable E-glass yarn that features highly stable quality, which has been surface-treated for use in weaving.

■ List of products (standard)

Yarn count	Product designation				Filament diameter	Filament count	Twist	TEX	Length per weight
					µm	Filaments	/25mm	g/1000m	km/kg
Extremely thinThick	ECBC	3000	1/0	1.0Z	4.0	50	1.0	1.7	606.0
	ECBC	1500	1/0	1.0Z	4.0	100	1.0	3.3	303.0
	ECC	1200	1/0	1.0Z	4.5	100	1.0	4.2	238.0
	ECD	900	1/0	1.0Z	5.3	100	1.0	5.6	178.5
	ECD	450	1/0	1.0Z	5.3	200	1.0	11.2	89.2
	ECDE	300	1/0	1.0Z	6.4	200	1.0	16.7	59.5
	ECDE	150	1/0	1.0Z	6.4	400	1.0	33.7	29.6
	ECDE	75	1/0	1.0Z	6.4	800	1.0	67.5	14.8
	ECE	225	1/0	1.0Z	7.4	200	1.0	22.5	44.6

■ Examples of applications

■ Industrial materials

Nittobo makes its E-glass yarn for industrial materials highly compatible with resin through its proprietary surface treatment technology. The E-glass yarn provides a workable basic ingredient of composite materials.

■ List of products (standard)

Yarn count	Product designation				Filament diameter	Filament count	Twist	TEX	Length per weight
					µm	Filaments	/25mm	g/1000m	km/kg
ThinThick	ECDE	150	1/0	1.0Z	6.4	400	1.0	33.7	29.6
	ECDE	75	1/0	1.0Z	6.4	800	1.0	67.5	14.8
	ECG	150	1/0	1.0Z	9.1	200	1.0	33.7	29.6
	ECG	75	1/0	0.7Z	9.1	400	0.7	68.7	14.8
	ECG	75	1/0	1.0Z	9.1	400	1.0	68.7	14.8
	ECG	37	1/0	1.0Z	9.1	800	1.0	135.0	7.4

T glass

Nittobo's T glass is superior even to E glass in terms of tensile strength, heat resistance, and dimensional stability. T-glass yarn is used for special printed wiringboard and industrial materials, contributing to making composite materials more efficient.

• * Currently, Nittobo is not selling T-glass yarn, and only woven T-glass cloth is commercially available.

NE glass

Nittobo's NE-glass yarn, which is manufactured using its unique NE glass with focus on such characteristics as low dielectric constant and low dielectric dissipation factor, is used for printed wiringboards.