Market for industrial base materials

Cloth for electric insulation, FRP, and fluororesin

Insulation, strength, smoothness, impact resistance, and other properties can be added to glass cloth by treating it in various ways.

Nittobo makes free use of single yarns, multiple twisted yarn, and other types of treated yarns to develop diverse cloth products based on the highest technology under rigorous quality control.

Woven glass cloth is rarely used as is (raw fabric). When used as a base material for composites, it undergoes heat treatment or surface treatment so that it has affinity for resin, or in order to give various characteristics to glass cloth according to the purpose of use, it is treated in various ways, including sealing. Only through these ways of treatment does glass cloth demonstrate the various characteristics of glass fiber to the fullest.

Cloth for electric insulation

One of the greatest uses of glass cloth is to make the most of glass fiber's electric insulation, heat resistance, and dimensional stability for electric insulation. Glass cloth is combined with mica or varnish for components of heavy electric equipment (generators, power transformers, and electric motors) or light electric equipment (such as TV sets and microwave ovens). It is also used for laminated boards.

Specifications (standard)

Product code Manner of weaving Thickness
mm
Width
cm
Weight
g/m²
Density
(/25mm)
Tensile strength
(N/25mm)
Length
m
Warp Weft Warp Weft
WEA 03C
103
Plain 0.030 103 20 60 30 >206 >74 1200
WEA 03G
103
Plain 0.030 103 28 48 30 >255 >88 600, 1200
WEA
180K 105
Plain 0.180 105 205 42 32 >980 >784 1000
WER 22D
104
Plain 0.210 104 206 20 18 >941 >823 240, 480
WER 22F
104
Plain 0.210 104 215 20 20 >980 >853 240, 480
WEA 26
105
Plain 0.240 105 275 25 25 >1176 >1078 600
WER 35D
104
Plain 0.300 104 335 16 15 >1372 >1333 120
  • * These figures are standard ones obtained from untreated cloth.

Cloth for FRP

Glass cloth is used for FRP as mats and roving cloth are. It is employed for molded products that require high strength. It is also employed to make the surface smooth and improve impact resistance.

Specifications (standard)

Cloth

Product code Manner of weaving Thickness
mm
Width
cm
Weight
g/m²
Density
(/25mm)
Treatment Length
m
Remarks
Warp Weft
WL 230
104 BS6
Plain 0.25 104 203 19 18 Silane-based 100 Applicable to JISR3416/EPF21A
WF 110D
100 BS6
Plain 0.15 100 100 19 18 Silane-based 200  
WF 150
100 BS6
Plain 0.22 0.22 144 18 18 Silane-based 120  
WF 230
100 BS6
Plain 0.25 100 200 19 18 Silane-based 100 Applicable to JISR3416/EPF21A
WF 350
100 BS6
Plain 0.33 100 328 16 15 Silane-based 60 Applicable to JISR3416/EPF21A
  • * These figures are standard ones obtained from untreated cloth.

Tape

Product code Manner of weaving Thickness
mm
Width
cm
Weight
g/m²
Density
(/25mm)
Treatment Length
m
Remarks
Warp Weft
WF 300
5N
Plain 0.22 5 272 25 23 100 Plastic size
WF 300
7N
Plain 0.22 7.5 272 25 23 100 Plastic size
WF 300
10N
Plain 0.22 10 272 25 23 100 Plastic size
  • * These figures are standard ones obtained from untreated cloth.

Cloth for fluororesin

Specifications (standard)

Product code Manner of
weaving
Thickness
mm
Width
cm
Weight
g/m²
Density
(/25mm)
Tensile strength
(N/25mm)
Warp Weft Warp Weft
WLA 108 107 Plain 0.055 107 48 60 46 >343 >245
WLA 113 107 Plain 0.080 107 83 59 64 >539 >343
WLA 116 107 Plain 0.097 107 105 59 57 >539 >539
WLA 128 107 Plain 0.175 107 97 42 32 >1068 >813
  • * These figures are standard ones obtained from untreated cloth.

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