Intermittent Bonded Ribbon Production Line Guide
At defined intervals, an intermittent bonded ribbon production line joins fiber subunits. This keeps fibers in an organized arrangement for mass-fusion splicing while letting the ribbon roll or fold into a compact cable shape. Flexible ribbon cable production is supported by this design while preserving efficient fiber handling.
Some processes deposit bonding material before the subunit coating cures. The materials can diffuse across their interface and cure together. One commercial example is Prysmian’s FlexRibbon technology, whose original design the company says dates to 2018. Together, these methods demonstrate the connection between optical fiber ribbon manufacturing and fiber optic bonding.
SZ Stranding Line Fiber Coloring Machine Fiber Ribbone Line
What Is An Intermittent Bonded Fiber Ribbon?
An intermittent bonded fiber ribbon groups optical fibers into small subunits. The subunits stay organized for splicing while remaining able to change shape to fit inside a cable.
How Fiber Subunits And Intermittent Bonds Are Arranged
A coating secures each adjacent fiber pair or group together. Instead of joining along their entire length, these optical fiber subunits are linked to neighboring subunits at spaced bond points. A 12-fiber design may use six two-fiber subunits. The configurations range from 4 to 36 fibers, and bond spacing ranges from 10 to 1,000 millimeters.
Intermittent Bonded Ribbon Production Line
Differences Between Rollable Ribbons And Conventional Flat Ribbons
A conventional flat ribbon keeps its fibers in a single fixed plane. Between bonds, a rollable fiber ribbon can fold without losing the fiber alignment needed for mass-fusion splicing. Prysmian’s FlexRibbon uses compact bonding points to permit bending and folding.
Why Flexible Ribbons Support Compact, High-Density Cables
Ribbon flexibility limits the space it occupies inside a high-density fiber cable. This enables cable designers to fit more fibers into a compact structure while preserving an organized fiber layout.
Intermittent Bonded Ribbon Production Line: Process And Equipment
The intermittent bonded ribbon production process aligns optical fibers side by side along the ribbon’s length. A first material coats groups of two or more fibers to form subunits. A second material joins neighboring subunits at spaced points and leaves flexible sections between the bonds.
Arrange Adjacent Optical Fibers Into Subunits
Fibers are positioned beside one another according to the planned ribbon layout. The first coating material encloses each selected group and holds its fibers together as a subunit.
Apply Subunit Coating And Intermittent Bonding Material
Fiber ribbon coating forms the subunits. Bonding material is applied by a discrete coating applicator between neighboring subunits at spaced intervals, not continuously along their full length.
Use Wet-On-Wet Application To Form Diffusion Zones
Wet-on-wet bonding involves depositing the bonding material before the subunit coating has cured. A diffusion zone develops as the materials intermix through their shared interface.
Set The Subunit Coating And Bonds In One Cure
Both the subunit coating and the intermittent bonds are set in one curing step. Optical fiber ribbon equipment performs these operations, although a complete equipment list, line speed, and production capacity are not specified.
| Process Stage | Material Or Action | Purpose |
|---|---|---|
| Fiber arrangement | Place fibers side by side | Establish the ribbon layout |
| Subunit formation | Apply the first coating material around fiber groups | Keep groups of two or more fibers together as subunits |
| Bonding at intervals | Apply the second material between adjacent subunits | Join subunits at spaced points |
| Wet-on-wet interface | Apply bonds before the subunit coating cures | Enable formation of a diffusion zone between the materials |
| Joint curing step | Cure coating and bonds in one step | Set the assembled ribbon structure |
Key Production Line Stages And Process Controls
The fiber ribbon production stages proceed in a defined order. Workers arrange fibers into subunits, apply a subunit coating, add intermittent bonds between adjacent subunits, and then cure both together. The ribbon design must guide both optical fiber coating application and placement of the bonds.
Example designs specify gaps of 5 to 100 micrometers between subunits. Example intermittent bond spacing extends from 10 to 1,000 millimeters. Some bond deposits take a diamond-like shape, narrowing at the ends and widening in the center. These are disclosed examples, not fixed parameters for every production line.
The selected materials, bond layout, and curing method determine ribbon manufacturing process control. Because the source material provides no line speeds, curing temperatures, or inspection intervals, avoid assuming any values for them.
Materials, Bond Design, And Ribbon Flexibility
Ribbon behavior during cable making and splicing depends on material choice and bond layout. Each fiber is covered by coatings that still allow the subunits to flex as designed.
Choose Compatible Coating And Bonding Materials
Because subunit coatings and ribbon bonding materials serve different roles, they do not have to share the same formula. Resins that mix or remain at least partly soluble can form a gradual interface. Lower coating viscosity may also encourage intermixing.
This interface forms a diffusion zone in which properties change gradually. The zone may differ in color, stiffness, surface friction, tear strength, or stretch. The disclosed thickness range is 2 to 50 micrometers, while 5 to 15 micrometers is identified as a narrower range.
Manage Bond Placement, Spacing, And Geometry
Where subunits remain joined or move freely is governed by bond spacing. An intermittent bond layout creates unconnected spans separating the bond points. Intersecting convex and concave curves form the saddle shape used on some bond surfaces.
Maintain Fiber Organization While Balancing Ribbon Flexibility
Between bonds, unbonded spans let a flat ribbon transform into a rolled, curled, or folded form. A flexible fiber ribbon design bends during cable installation while keeping fibers organized for splicing.
Quality Checks To Maintain Consistent Ribbon Production
Instead of using assumed pass limits, dependable fiber ribbon quality checks assess defined features. The patent identifies design factors such as bond spacing, subunit gaps, diffusion-zone thickness, and bond shape. However, it does not specify inspection methods or acceptance limits.
Inspect Bond Continuity And Subunit Alignment
Check that intermittent bonds join adjacent subunits at planned locations and leave unbonded lengths between connections. Review subunit alignment and gaps because shifts can affect ribbon shape and bond geometry.
Evaluate Ribbon Flexibility And Rollability
To evaluate ribbon rollability, watch whether it bends and gathers while keeping fibers in their original order. Compare bond spacing and flexibility across the overall ribbon design. These comparisons are design checks, not universal production tolerances.
Confirm Fiber Identification And Ribbon Configuration
Confirm each fiber’s position through fiber color coding. A common 12-color sequence is blue, orange, green, brown, slate, white, red, black, yellow, violet, rose, and aqua. The color sequence may repeat when a ribbon has more than 12 fibers.
Cable Applications, Integration, And Splicing Benefits
Intermittently bonded ribbons can roll inside a cable, enabling more fibers to fit into a compact design. According to Prysmian, FlexRibbon enables high-density ribbon cable designs with smaller diameters and more effective fiber duct utilization.
Support High-Density Cable Designs And Duct Utilization
Prysmian offers FusionLink and MassLink with FlexRibbon in indoor, outdoor, and indoor/outdoor designs. Dry water blocking is used in FusionLink, which comes with either 250 μm or 200 μm ribbon. Under NESC Heavy loading conditions, EcoSpan aerial cable can accommodate spans of up to 300 feet. As a small-diameter outdoor option, FlexDrop can support up to two 12-fiber ribbons.
Enable Mass-Fusion Splicing And Faster Deployment
Mass-fusion splicing joins several ribbon fibers in a single operation, often 12 at once. This approach may reduce splice time where ribbon routes are compatible. When connecting to loose-tube cable, technicians separate ribbon fibers and individually splice them with a single-fiber splicer.
Consider Indoor, Outdoor, Access, And Broadband Uses
Ribbon cable is used in point-to-point networks, indoor FTTH systems, MTP wiring-box links, and urban trunk routes. Selecting indoor and outdoor fiber cable for each route helps align cable construction with the needs of buildings, aerial runs, and underground installations.
Final Conclusions
An intermittent bonded ribbon line guide covers fiber layout, bond placement, curing, and inspection. The result is a flexible optical fiber ribbon that remains orderly during handling yet can roll or fold into compact cable designs.
The process involves applying bonds while the subunit coating is still uncured. Before they cure together, the materials form a diffusion zone. Careful control throughout the process helps maintain reliable fiber cable manufacturing.
Mass-fusion ribbon splicing is also enabled by flexible ribbons, helping crews splice many fibers in one operation. Prysmian describes FlexRibbon in various cable designs, including compact configurations containing up to 6,912 fibers.
For manufacturers and network planners, the priority is to balance fiber alignment, bond strength, and rollability. This balance may make cable packaging easier while ensuring ribbons remain prepared for efficient installation and splicing.
