Intermittent Bonded Ribbon Production Line Guide
At defined intervals, an intermittent bonded ribbon production line joins fiber subunits. This maintains 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.
In some processes, bonding material is applied while the subunit coating is still uncured. Diffusion can occur across the shared interface before the materials cure together. One commercial example is Prysmian’s FlexRibbon technology, whose original design the company says dates to 2018. These methods illustrate how optical fiber ribbon manufacturing and fiber optic bonding operate together.
SZ Stranding Line Fibers In Stainless Steel Tube Fiber Draw Tower
Understanding What An Intermittent Bonded Fiber Ribbon Is
An intermittent bonded fiber ribbon organizes optical fibers into small subunits. The subunits stay organized for splicing while remaining able to change shape to sit inside a cable.
The Arrangement Of Fiber Subunits And Intermittent Bonds
Each adjacent pair or group of fibers is held together by a coating. Instead of joining along their entire length, these optical fiber subunits are connected to neighboring subunits at spaced bond points. Six two-fiber subunits may form a 12-fiber design. 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
In a conventional flat ribbon, the fibers remain in a single fixed plane. Between bonds, a rollable fiber ribbon can curl without losing the fiber alignment needed for mass-fusion splicing. Prysmian’s FlexRibbon uses small bonding points to permit bending and folding.
Why Flexible Ribbons Support Compact, High-Density Cables
Inside a high-density fiber cable, a flexible ribbon can occupy less space. Cable designers can therefore fit more fibers in a compact structure without sacrificing an organized fiber layout.
Intermittent Bonded Ribbon Production Line: Process And Equipment
The intermittent bonded ribbon production process places optical fibers side by side along the ribbon’s length. Subunits are formed when a first material coats groups containing two or more fibers. Neighboring subunits are joined at spaced points with a second material, leaving flexible sections between bonds.
Organize Adjacent Optical Fibers Into Subunits
Fibers are placed beside one another according to the planned ribbon layout. Each selected group becomes a subunit when the first coating material surrounds and holds its fibers together.
Deposit Subunit Coating And Intermittent Bonding Material
Fiber ribbon coating creates the subunits. Bonding material is deposited by a discrete coating applicator between neighboring subunits at spaced intervals, not continuously along their full length.
Create Diffusion Zones Through Wet-On-Wet Application
During wet-on-wet bonding, the subunit coating remains unset when bonding material is applied. The materials intermix across their shared interface to form a diffusion zone.
Set The Subunit Coating And Bonds In One Cure
A single curing step cures both the subunit coating and the intermittent bonds. Although optical fiber ribbon equipment is used for these operations, the complete equipment list, line speed, and production capacity are not provided.
| Process Stage | Material Or Operation | Purpose |
|---|---|---|
| Optical fiber arrangement | Place fibers side by side | Establish the ribbon layout |
| Formation of subunits | Coat fiber groups with the first coating material | 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 | Deposit bonds while the subunit coating remains uncured | Allow materials to form a diffusion zone |
| Joint curing step | Cure coating and bonds in one step | Set the assembled ribbon structure |
Main 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.
Ribbon manufacturing process control depends on the chosen material selection, bond layout, and curing method. Because the source material provides no line speeds, curing temperatures, or inspection intervals, avoid assuming any values for them.
Ribbon Flexibility, Bond Design, And Materials
Ribbon behavior during cable making and splicing depends on material choice and bond layout. Coatings shield each fiber while permitting the subunits to flex as intended.
Choose Compatible Coating And Bonding Materials
Subunit coatings and ribbon bonding materials have distinct functions, so their formulas need not be identical. A gradual interface can be formed by resins that intermix or remain at least partly soluble. Intermixing may also be encouraged by lower coating viscosity.
This interface creates a diffusion zone in which properties change gradually. The zone may differ in color, stiffness, surface friction, tear strength, or stretch. Disclosed thicknesses range from 2 to 50 micrometers, with 5 to 15 micrometers representing a narrower range.
Control Bond Placement, Spacing, And Geometry
Bond spacing controls where fiber subunits stay connected and where they can move freely. Intermittent bond geometry provides unbonded spans between bond points. Some bond surfaces have a saddle shape made by intersecting convex and concave curves.
Maintain Fiber Organization While Balancing Ribbon Flexibility
Between bonds, unbonded spans let a flat ribbon transform into a rolled, curled, or folded form. During cable installation, a flexible fiber ribbon can bend without disrupting the fiber organization needed for splicing.
Quality Checks To Maintain Consistent Ribbon Production
Instead of using assumed pass limits, dependable fiber ribbon quality checks assess defined features. Design factors named in the patent include the spacing of bonds, subunit gaps, diffusion-zone thickness, and bond shape. However, it does not establish inspection methods or acceptance limits.
Inspect Bond Continuity And Subunit Alignment
Verify that intermittent bonds join adjacent subunits at the planned positions, with unbonded lengths between them. Subunit alignment and gaps require review because shifts may change 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. Treat these comparisons as design checks rather than universal production tolerances.
Verify Fiber Identification And Ribbon Configuration
Confirm each fiber’s position using fiber color coding. A common 12-color sequence is blue, orange, green, brown, slate, white, red, black, yellow, violet, rose, and aqua. For ribbons containing more than 12 fibers, this sequence may be repeated.
Cable Applications, Integration, And Splicing Benefits
Intermittently bonded ribbons can fold 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 better fiber duct utilization.
Support High-Density Cable Designs And Duct Utilization
For indoor, outdoor, and indoor/outdoor applications, Prysmian provides FusionLink and MassLink with FlexRibbon. 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 hold up to two 12-fiber ribbons.
Enable Mass-Fusion Splicing And Faster Deployment
Multiple ribbon fibers, often 12 at a time, are joined in one operation through mass-fusion splicing. 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
Applications for ribbon cable include 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 match cable construction with the needs of buildings, aerial runs, and underground installations.
Conclusion
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 depositing bonds while the subunit coating is still uncured. The materials create a diffusion zone before curing together. Reliable fiber cable manufacturing is encouraged by careful control at every stage.
Mass-fusion ribbon splicing is also enabled by flexible ribbons, helping crews splice many fibers in one operation. FlexRibbon is described by Prysmian as suitable for multiple cable designs, including compact configurations with up to 6,912 fibers.
For manufacturers and network planners, the priority is to coordinate fiber alignment, bond strength, and rollability. This balance may make cable packaging simpler while ensuring ribbons remain prepared for efficient installation and splicing.