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For over 40 years, the team in Granite Falls, NC has continued to lead the industry in innovation with LIGHTLINE® GRP (glass reinforced polymer) central strength member. With the flexibility to add specialty coatings to the GRP such as water swellable, EAA for adhesion promotion, up jacketing with polyethylene, or others –
GFC is your top source for central strength member needs.
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GFC LIGHTLINE® is manufactured with ISO 9000 quality standards and surpasses the competition with a level of consistency and reliability that will improve cable throughput and productivity in the cable manufacturing process.
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“Smooth payoff, consistent diameter control, superior tensile and environmental performance, un-matched adhesion performance (EAA)”, are just a few of the compliments regularly given by cable manufacturing Engineers and operators that use GFC LIGHTLINE®. “When you purchase GFC LIGHTLINE® you know what you are getting --- you are getting the best in the business!”
Coated for your application
GFC LIGHTLINE® GRP is available with specialty coatings to meet your specific cable design needs. Water blocking, EAA, Bond/Release, as well as PE upjacketed material is available.​
Fiber Type
Resin Type
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Fiber %
Resin %
Std Diameter Tolerance
Thermal Resistance
E glass
UV/LED cured, styrene free, no VOCs epoxy acrylate
80
20
+-5%
100 x diameter, 5 days, 100C
Tensile Strength
Modulus of Elasticity
Load at 1% (LASE)
Flexural Modulus
Elongation at Break
Minimum Bend Diameter
>1.40 GPa
>50 GPa
GPa
>48 GPa
>2.5%
40 x diameter
GFC INSTANTBOND® is the industry leading FRP coated with EAA (Ethylene Acrylic Acid) to promote adhesion to upjacket substrates. In addition, the GRP is super smooth for operator friendly handling and reduced fiber buildup during processing
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The final GRP diameter (with INSTANTBOND® coating) is base GRP plus 0.07mm. Example: LFH/IH160 has a nominal base rod diameter of 1.60mm and a nominal final product diameter of 1.67mm.
GFC LIGHTLINE INSTANDRY® GRP has water uptake features of 90% of original weight. INSTANTDRY® can be added to GRP sizes 0.90mm-5.00mm.
The final GRP diameter (with INSTANDRY® coating) is base GRP plus 0.05mm. Example: LFH/WU160 has a nominal base rod diameter of 1.60mm and a nominal final product diameter of 1.65mm.
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used to pass Telecordia GR20 requirements
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Bonded SAP coating to FRP to eliminate powder build up during processing
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Eliminates need for cable flooding compounds
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Can be used as a physical adhesion promoter to create a mechanical bond with the textured surface
GFC TACKYBOND® is a unique bonding promoter with the ability to bond and release with physical tack. No chemical bonds are formed between substrates of GRP and other cable components.
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The final GRP diameter (with TACKYBOND® coating) is base GRP plus 0.03mm. Example: LFH/TC190 has a nominal base rod diameter of 1.90mm and a nominal final product diameter of 1.93mm.