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Natural and synthetic yarns, fibers, spuns, monofilaments and cutflock specialities from the reliable source Swicofil 
Belltron conductive yarns and fibers

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Belltron from Kanebo Japan 


Kanebo Belltron is a high performance, excellent conductive fiber developed from Kanebo conjugate technology.
Belltron conductive yarns and fibers from Kanebo
Cross sectional photo of Carbon Belltron
Cross sectional photo of White Belltron
cross-section of Belltron type 638
Type 638
Cross-section of Belltron type 632
Type 632

Blending just a small amount of Belltron will prevent static problems like

(1) static shocks you experience when walking on carpets and touching door knobs, or getting out of cars,

(2)clinging of clothing to your body, and

(3)attracting of dust and soil.


Features of Belltron
Examples of how frictional static charge attracts dust
example of how frictional static charge attracts dust Belltron
Belltron 1%,  wool 99%

1 Offers Sufficient Static Control Capability by Blending a small Amount of Belltron.
All blending methods are possible--blending at mixing, spinning, doubling, knitting and weaving stages.
2 Possesses Excellent Static Control Capacity
The static control properties are very stable and permanent.
3 High Resistance to Washing, Flexing and Abrasion
unlike carbon-coated fibers, no carbon particles will come off Belltron By rubbing. Also unlike metal and carbon fibers, Belltron will neither break off, nor damage any surface it comes in contact with.
4 Available in Three Colors--Black, Gray and White
Some uses permit care-free application of Belltron to lighter shades.
5 Available in Nylon and Polyester Base Polymers
Belltron comes in various types for your diverse needs--durability, resistance to chemicals and gamma rays and high resiliency.
Type 632Z Nylon dtex 22 f 5
Nylon dtex 33 f 5


End-use of Belltron

end use of Belltron

end use of Belltron end use of Belltron

end uses of Belltron





1. Component
Nylon and polyester
2. Trademark
3. Briefing 
This is a high performance conductive bicomponent fiber born out of Kanebo's conjugate fiber spinning technology. Blending a small amount of Belltron with other fibers will make the resultant fabric sufficiently antistatic. Belltron does not depend on the ambient humidity for bringing about its antistatic effect. It has consistent antistatic properties even in absolutely dry conditions. It can be blended with other fibers in the pre-spinning stage. It can also be mixed with other yarns at doubling, knitting and weaving stages. Kanebo is the pioneer in the production of conductive fibers in Japan. Belltron has enjoyed a solid record of achievement in sales for the last 22 years since Kanebo started selling it in 1978.
4. Product and technological features
As shown in below  illustrations, a bicomponent fiber Belltron is composed of a matrix polymer and a conductive layer. The layer contains densely embedded carbon black or white metal compound as conductive particles.
5. Advantages over other companies' materials
(1) Conductive layer extends across the fiber and is continuous along the direction of the fiber axis. Both edges of the conductive carbon-containing portion are exposed to the outer surface of the fiber. This unique structure ensures static charge conduction and dissipation as well as self-charging. As a result, Belltron has outstanding antistatic properties.
(2) Nylon and polyester type Belltron is available in filaments and staple fibers. Belltron's conductive portion comes in carbon black and gray colors. White type Belltron uses white metal compound as conductive particles. This variety helps Belltron find various new uses.
(3) As to Belltron brushes for cleaning automated office equipment, Kanebo is ready to supply static-free ones to meet your requirements.
6. End-uses
Work clothes, dust-free garments, school uniforms, dress suits, sweaters, carpets, upholsteries, car seats, blankets, curtains and static-free brushes for cleaning office equipment.
7. Specifications
Cross sectional configuration
Matrix polymer
Conductive particles
Carbon Belltron 931
cross section
Nylon Carbon Black
cross section
Nylon Carbon Gray
cross- section of Belltron
Nylon Carbon Semi-white
cross section
Polyester Carbon Black
cross- section of Belltron
Polyester Carbon Light gray
cross section
Nylon Carbon Gray
White Belltron 632
cross- section of Belltron
Nylon White metal compound White
crosssection of Belltron
Nylon White metal compound White
crosssection of Belltron
Polyester White metal compound White
8. Care instructions
(1) Susceptible to causticization, Belltron may result in decreased antistatic properties when
i. it is causticized by caustic soda in high concentration,
ii. it is repeatedly causticized by caustic soda in low concentration and
iii. it is de-colored in caustic soda solutions.
(2) Nylon Belltron is less heat resistant than polyester Belltron, so it may dissolve when exposed to high temperatures at thermosol dyeing.
(3) Dissolvable in strong acids, nylon Belltron should not be treated in strong acid solutions. If an old chloric organic solvent is used repeatedly at a laundry shop, the chlorine is set free and reacts with the water to form hydrochloric acid. The acid may dissolve Belltron.
(4) White Belltron may decrease its antistatic properties when passed between highly heated calander rollers.


We are also in a position to offer mixed yarns of Polyester multifilament yarn with intermingled Belltron components. In this way it is possible to strengthen the yarn for easy weaving - possible for warp and for weft - to suit your requirements and to ensure an excellent runability of the yarn. 

Please note that all these yarns are never produced on stock - only on specific demand. Minimum order is 100 bobbins = abt. 120 kgs.

For more details please contact us with the inquiry form.


You may download the Belltron material data safety sheet in Acrobat PDF file format by clicking here MSDS


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