Vulcanized Fibre

Hokuetsu (USA), Inc

Product List: MATERIAL OF PLASTIC FREE ERA, VULCANIZED FIBRE

  • Due to excellent strength, it is tenacious and hard to break.
  • Due to excellent insulation, it is difficult to conduct electricity.
  • Due to excellent biodegradability, it is rapidly degraded by microorganisms in the ground.
  • Due to excellent processability, it is possible for bending processing and drawing processing.
  • Surface processability is also excellent, it is possible for painting and bonding.

List of Vulcanized Fibre products

  • Click on the blue banner to open/close data.
  • Some thicknesses and shapes are not available for some color type.
  • Please contact sales department staff for color and thickness other than below.
Hokuetsu (USA), Inc

HB-77

HB-77 is the standard Vulcanized Fibre made of pulp.

It corresponds to JIS C 2315 B class.

It is excellent at mechanical strength and processability (e.g. punching, bending, and drawing), and a general product used for various containers, miscellaneous goods, various packings, and machine parts as structural materials including electrical insulating materials.

  • 10 RoHS regulated substances are not used

Standard color: R, N, SW, B
Standard thickness: 0.25~2.4mm
Flame retardancy (UL subject 94): 0.71mm or more HB
Electrical insulation: Good
Arc resistance: 120~140Minutes

  • The above values are reference values, not guaranteed values
Hokuetsu (USA), Inc
Hokuetsu (USA), Inc

Fish Paper

FPL has excellent heat resistance and processability, and is mainly used for electrical insulation materials.

  • 10 RoHS regulated substances are not used.
Hokuetsu (USA), Inc

Heat and Water Resistant Fibre

Hokuetsu (USA), Inc

K-57

K-57 is certified by the Electrical Appliance and Material Safety Law.

A product in which the properties of fibers and plastics with excellent dimensional stability are uniformly combined in the tissue.

  • 10 RoHS regulated substances are not used.

Standard color: N
Standard thickness: 0.5~2.4mm
Water Absorption in one hour: 10%or less
Flame retardancy (UL subject94): 0.74mm or moreHB
Electrical insulation: Excellent
Arc resistance: 130~140Minutes

  • The above values are reference values, not guaranteed values
Hokuetsu (USA), Inc

RK-76(S)

RK-76 (S) is a product with K-57 as a base material and urethane resin coated on the surface.

  • 10 RoHS regulated substances are not used.

Standard color: GY
Standard thickness: 0.35~1.6mm
Water Absorption in one hour: 10%or less
Flame retardancy (UL subject94): 0.8or more HB
Electrical insulation: Excellent
Arc resistance: 130~140Minutes

  • The above values are reference values, not guaranteed values
Hokuetsu (USA), Inc
Hokuetsu (USA), Inc

NF-77(N)

NF-77 (N) is a UL-certified product that imparts flame resistance to the base general fibre. Bending process can be performed smoothly by heating the bent part (150-200 ℃).

  • 10 RoHS regulated substances are not used.

Standard color: GY
Standard thickness: 0.25~1.6mm
Flame retardancy (UL subject94): V-0 Certification
Hot wire: 120Minutes or more
High amp arc: 120Rounds or more
Electrical insulation: Good

  • The above values are reference values, not guaranteed values
Hokuetsu (USA), Inc
Hokuetsu (USA), Inc
Hokuetsu (USA), Inc

VFG・VF-67

VFG / VF-67 is a product in which a fibre single plate is used as a base material and laminated to any thickness using special resin.

As a structural material excellent in machining, it is used in various fields such as electrical insulation and sports equipment.

  • 10 RoHS regulated substances are not used.
Hokuetsu (USA), Inc
Hokuetsu (USA), Inc

Abrasive Fibre

Abrasive fibre is a fibre used for abrasive discs. Polishing fibers require severe characteristics for use.

Our company brings together the finest selection of pulp, which is the raw material, and our unique production technology to provide products at an international level.

  • 10 RoHS regulated substances are not used.

Thickness: 0.80mm
Density: 1.28g/㎤
Tensile strength MD: 117MPa, CD 73MPa
Internal Ply Adhesion: 3.9kg/25.4mm Width

  • The above values are reference values, not guaranteed values
Hokuetsu (USA), Inc
Hokuetsu (USA), Inc

Oriental Cocktail

Oriental cocktails are characterized by vibrant colors not found in conventional products. Processing is easy, and after wetting with water, changing the shape and drying, it retains its shape and is used for stationery and art.

  • 10 RoHS regulated substances are not used.

Comparison table of Characteristic values

Test items unit Test conditions General Fibre Heat and water resistant fiber Flame retardant fiber
HB-77N K-57N RK-76(S)GY NF-77(N)GY RNF-77GY
Thickness mm 23℃50%RH 2.00 2.00
Paper weight in gsm g/m² 2570 2700
Density g/cm³ 1.29 1.35
Tensile strength (Machine direction) Mpa 111 103
Tensile strength (Cross direction) 60 55
Bending resistance (Machine direction) mm 19.1
Bending resistance (Cross direction) 6.4
Thermal contraction rate (Machine direction) % 105℃/5hrs 0.6 0.8
Thermal contraction rate (Cross direction) 1.4 1.5
Thermal contraction rate (Thickness) 3.2 3.0
Breakdown strength kV/mm 23℃50%RH 11.5
105℃/48h 25.6 25.2
Volume resistivity MΩ・cm 23℃50%RH 9.0×10⁴

40℃90%RH/24h

1.4×10⁴
Arc resistance Minutes 23℃50%RH 133 133
Water absorption rate 23℃Water absorption1hr 7.3
Moisture 105℃/48h 10or less 10or less
Flame retardance UL94 HB HB
Hot wire Minutes UL746A 15~30
High amp arc Rounds UL746A 120or more
Test items unit Test conditions General Fibre Heat and water resistant fiber Flame retardant fiber
HB-77N K-57N RK-76(S)GY NF-77(N)GY RNF-77GY
Thickness mm 23℃50%RH 1.60 1.60 1.60
Paper weight in gsm g/m² 2062 2083 2154
Density g/cm³ 1.29 1.30 1.35
Tensile strength (Machine direction) Mpa 114 105 79
Tensile strength (Cross direction) 61 57 48
Bending resistance (Machine direction) mm 11.8
Bending resistance (Cross direction) 5.0
Thermal contraction rate (Machine direction) % 105℃/5hrs 0.7 0.7 0.6
Thermal contraction rate (Cross direction) 1.5 1.5 1.2
Thermal contraction rate (Thickness) 3.4 3.1 2.1
Breakdown strength kV/mm 23℃50%RH 15.6 5.3
105℃/48h 28.2 30.6 29.0
Volume resistivity MΩ・cm 23℃50%RH 4.8×10⁵ 3.4×10⁴

40℃90%RH/24h

2.1×10³ 1.7×10²
Arc resistance Minutes 23℃50%RH 134 131
Water absorption rate 23℃Water absorption1hr 6.2
Moisture 105℃/48h 10or less 10or less 10or less
Flame retardance   UL94 HB HB V-0
Hot wire Minutes UL746A 15~30 120or more
High amp arc Rounds UL746A 120or more 120or more
Test items unit Test conditions General Fibre Heat and water resistant fiber Flame retardant fiber
HB-77N K-57N RK-76(S)GY NF-77(N)GY RNF-77GY
Thickness mm 23℃50%RH 1.20 1.20 1.20
Paper weight in gsm g/m² 1542 1524 1598
Density g/cm³ 1.29 1.28 1.36
Tensile strength (Machine direction) Mpa 121 104 84
Tensile strength (Cross direction) 65 57 54
Bending resistance (Machine direction) mm 7.9 16.1 34.6
Bending resistance (Cross direction) 3.6 11.1 31.1
Thermal contraction rate (Machine direction) % 105℃/5hrs 0.7 0.8 0.6
Thermal contraction rate (Cross direction) 1.6 1.7 0.9
Thermal contraction rate (Thickness) 3.6 3.3 1.8
Breakdown strength kV/mm 23℃50%RH 17.4 9.2
105℃/24h 30.2 32.1 31.6
Volume resistivity MΩ・cm 23℃50%RH 1.0×10⁶ 4.9×10⁴

40℃90%RH/24h

6.5×10³ 4.5×10²
Arc resistance Minutes 23℃50%RH 134 130
Water absorption rate 23℃Water absorption1hr 6.7
Moisture 105℃/24h 10or less 10or less 10or less
Flame retardance   UL94 HB HB V-0
Hot wire Minutes UL746A 7~15 120or more
High amp arc Rounds UL746A 120or less 120or less
Test items unit Test conditions General Fibre Heat and water resistant fiber Flame retardant fiber
HB-77N K-57N RK-76(S)GY NF-77(N)GY RNF-77GY
Thickness mm 23℃50%RH 1.00 1.00 1.00 1.00
Paper weight in gsm g/m² 1269 1275 1285 1285
Density g/cm³ 1.27 1.28 1.29 1.29
Tensile strength (Machine direction) Mpa 120 102 121 82
Tensile strength (Cross direction) 64 56 65 46
Bending resistance (Machine direction) mm 6.3 14.5 14.2
Bending resistance (Cross direction) 2.7 10.4 10.8
Thermal contraction rate (Machine direction) % 105℃/5hrs 0.7 0.8 0.7 0.8
Thermal contraction rate (Cross direction) 1.7 1.8 1.6 1.5
Thermal contraction rate (Thickness) 3.7 3.5 3.1 2.6
Breakdown strength kV/mm 23℃50%RH 18.5 24.5 9.1
105℃/24h 32.7 33.7 33.4 34.9
Volume resistivity MΩ・cm 23℃50%RH 1.8×10⁶ 4.0×10⁶ 3.2×10⁴

40℃90%RH/24h

6.1×10³ 3.8×10⁴ 2.6×10²
Arc resistance Minutes 23℃50%RH 135 130
Water absorption rate 23℃Water absorption1hr 6.9 2.5
Moisture 105℃/24h 10or less 10or less 10or less 10or less
Flame retardance   UL94 HB HB HB V-0
Hot wire Minutes UL746A 7~15 120or more
High amp arc Rounds UL746A 120or more 120or more
Test items unit Test conditions General Fibre Heat and water resistant fiber Flame retardant fiber
HB-77N K-57N RK-76(S)GY NF-77(N)GY RNF-77GY
Thickness mm 23℃50%RH 0.80 0.80 0.80 0.80 0.80
Paper weight in gsm g/m² 989 995 1005 1017 1052
Density g/cm³ 1.24 1.24 1.26 1.27 1.31
Tensile strength (Machine direction) Mpa 119 101 105 91 90
Tensile strength (Cross direction) 63 57 60 47 49
Bending resistance (Machine direction) mm 4.8 16.6 8.6 8.9
Bending resistance (Cross direction) 1.8 13.1 4.1 8.2
Thermal contraction rate (Machine direction) % 105℃/5hrs 0.7 0.8 0.7 0.7 0.6
Thermal contraction rate (Cross direction) 1.8 1.8 1.6 1.5 1.5
Thermal contraction rate (Thickness) 3.8 3.5 2.8 2.5 2.6
Breakdown strength kV/mm 23℃50%RH 18.5 20.3 11.0 13
105℃/24h 33.6 35.5 38.4 36.2 39.8
Volume resistivity MΩ・cm 23℃50%RH 5.0×10⁶ 1.6×10⁷ 4.1×10⁴ 2.0×10⁵

40℃90%RH/24h

7.3×10³ 8.3×10⁴ 3.1×10² 4.8×10³
Arc resistance Minutes 23℃50%RH 134 128
Water absorption rate 23℃Water absorption 1hr 7.2 1.6
Moisture 105℃/24h 10or less 10or less 10or less 10or less 10or less
Flame retardance   UL94 HB HB HB V-0 V-0
Hot wire Minutes UL746A 7~15 120or more 30~60
High amp arc Rounds UL746A 120or more 120or more 120or more
Test items unit Test conditions General Fibre Heat and water resistant fiber Flame retardant fiber
HB-77N K-57N RK-76(S)GY NF-77(N)GY RNF-77GY
Thickness mm 23℃50%RH 0.50 0.50 0.50 0.50 0.50
Paper weight in gsm g/m² 606 609 620 624 646
Density g/cm3 1.21 1.22 1.24 1.25 1.29
Tensile strength (Machine direction) Mpa 114 103 114 90 98
Tensile strength (Cross direction) 60 58 58 47 55
Bending resistance (Machine direction) mm 2.2 14.1 5.0 8.5
Bending resistance (Cross direction) 0.7 11.1 2.3 4.2
Thermal contraction rate (Machine direction) % 105℃/5hrs 0.8 0.8 0.7 0.6 0.5
Thermal contraction rate (Cross direction) 1.9 1.7 1.6 1.5 1.2
Thermal contraction rate (Thickness) 3.8 3.7 3.6 2.7 2.8
Breakdown strength kV/mm 23℃50%RH 19.0 29.1 8.3 17.7
105℃/24h 37.3 37.2 36.5 37.9 37.3
Volume resistivity MΩ・cm 23℃50%RH 8.4×10⁶ 8.0×10⁶ 8.9×10⁴ 7.3×10⁵

40℃90%RH/24h

1.4×10⁴ 2.9×10⁴ 4.1×10² 3.7×10³
Arc resistance Minutes 23℃50%RH 130 123
Water absorption rate 23℃Water absorption1hr 7.3 4.2
Moisture 105℃/24h 10or less 10or less 10or less 10or less 10or less
Flame retardance   UL94 V-0 V-0
Hot wire Minutes UL746A 120or more
High amp arc Rounds UL746A 120or more
Test items unit Test conditions General Fibre Heat and water resistant fiber Flame retardant fiber
HB-77N K-57N RK-76(S)GY NF-77(N)GY RNF-77GY
Thickness mm 23℃50%RH 0.25 0.25 0.25
Paper weight in gsm g/m² 254 287 308
Density g/cm3 1.06 1.15 1.22
Tensile strength (Machine direction) Mpa 95 85 99
Tensile strength (Cross direction) 48 44 57
Bending resistance (Machine direction) mm 0.5 2.2 6.5
Bending resistance (Cross direction) 0.1 0.7 3.5
Thermal contraction rate (Machine direction) % 105℃/5hrs 0.8 0.6 0.4
Thermal contraction rate (Cross direction) 1.9 1.5 1.0
Thermal contraction rate (Thickness) 3.6 3.2 3.2
Breakdown strength kV/mm 23℃50%RH 11.7 31.8
105℃/24h 38.5 40.2 42.7
Volume resistivity MΩ・cm 23℃50%RH 9.9×10⁴ 8.3×10⁶

40℃90%RH/24h

2.4×10³ 2.8×10⁴
Arc resistance Minutes 23℃50%RH
Water absorption rate 23℃Water absorption 1hr
Moisture 105℃/24h 10or less 10or less 10or less
Flame retardance   UL94 V-0 V-0
Hot wire Minutes UL746A 120or more
High amp arc Rounds UL746A 120or more

The above figures are reference values, not guaranteed values

Physical property value does not change by color, but electrical property value may become low by some color.

Comparison table of characteristic values with various plastic products

The above values are reference values, not guaranteed values