Intermittent Bonded Ribbon Production Line Guide
At defined intervals, an intermittent bonded ribbon production line joins fiber subunits. Fibers remain organized for mass-fusion splicing, while the ribbon can roll into a compact cable shape. Flexible ribbon cable production is supported by this design while preserving efficient fiber handling.
Some processes apply 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. These methods illustrate how optical fiber ribbon manufacturing and fiber optic bonding work in combination.
Fiber Coloring Machine Compact Fiber Unit Fiber Ribbone Line
Understanding What An Intermittent Bonded Fiber Ribbon Is
An intermittent bonded fiber ribbon organizes optical fibers into small subunits. Although they remain organized for splicing, the subunits can change their shape to fit within a cable.
How Fiber Subunits And Intermittent Bonds Are Arranged
A coating secures each adjacent fiber pair or group together. These optical fiber subunits connect to neighboring subunits at separated bond points rather than along their full length. Six two-fiber subunits may make up a 12-fiber design. Configurations can contain 4 to 36 fibers, with bonds spaced from 10 to 1,000 millimeters apart.
Intermittent Bonded Ribbon Production Line
Differences Between Rollable Ribbons And Conventional Flat Ribbons
In a conventional flat ribbon, the fibers remain in one fixed plane. A rollable fiber ribbon can curl between bonds while retaining fiber alignment for mass-fusion splicing. Prysmian’s FlexRibbon uses small bonding points to permit bending and folding.
How Flexible Ribbons Enable Compact, High-Density Cables
Ribbon flexibility reduces 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
Throughout an intermittent bonded ribbon production process, optical fibers are arranged side by side along the ribbon’s length. Subunits are created when a first material coats groups containing two or more fibers. A second material links neighboring subunits at spaced points and leaves flexible sections between the bonds.
Arrange Adjacent Optical Fibers Into Subunits
Fibers are placed beside one another according to the planned ribbon layout. The first coating material surrounds each selected group and holds its fibers together as a subunit.
Apply Subunit Coating And Intermittent Bonding Material
Fiber ribbon coating creates the subunits. A discrete coating applicator places bonding material between neighboring subunits at intervals rather than along their entire length.
Use Wet-On-Wet Application To Form Diffusion Zones
During wet-on-wet bonding, the subunit coating remains uncured when bonding material is applied. A diffusion zone develops as the materials diffuse through their shared interface.
Cure The Subunit Coating And Bonds Together
Both the subunit coating and the intermittent bonds are cured in one curing step. Although optical fiber ribbon equipment is used for these operations, the complete equipment list, line speed, and production capacity remain unspecified.
| Production Stage | Material Or Action | Purpose |
|---|---|---|
| Fiber arrangement | Place fibers side by side | Establish the ribbon layout |
| Subunit formation | Coat fiber groups with the first coating material | Keep groups of two or more fibers together as subunits |
| Bonding at intervals | Deposit the second material between neighboring subunits | Connect subunits at separated bond points |
| Wet-on-wet interface | Apply bonds before the subunit coating cures | 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
Fiber ribbon production stages take place in a specific sequence. The sequence involves organizing fibers into subunits, applying a subunit coating, placing intermittent bonds between adjacent subunits, and curing the coating and bonds together. Optical fiber coating application and bond placement must match the ribbon design.
Gaps of 5 to 100 micrometers between subunits are described in example designs. A range of 10 to 1,000 millimeters is specified for intermittent bond spacing in example designs. Some bond deposits take a diamond-like shape, tapering 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 influence ribbon manufacturing process control. The source material does not specify line speeds, curing temperatures, or inspection intervals, so these values must not be inferred.
Ribbon Flexibility, Bond Design, And Materials
Material selection and bond layout determine how the ribbon behaves during cable making and splicing. Coatings protect each fiber while permitting the subunits to flex as intended.
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. 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.
A diffusion zone forms at this interface, with properties that vary gradually. Differences in colour, stiffness, surface friction, tear strength, or stretch may occur within this zone. Disclosed thicknesses range from 2 to 50 micrometers, with 5 to 15 micrometers representing a narrower range.
Manage Bond Placement, Spacing, And Geometry
Where subunits remain linked or move freely is governed by bond spacing. Intermittent bond geometry leaves unbonded spans between bond points. Intersecting convex and concave curves form the saddle shape used on some bond surfaces.
Balance Ribbon Flexibility With Fiber Organization
Unbonded spans allow the ribbon to change from a flat layout into a rolled, curled, or folded shape. During cable installation, a flexible fiber ribbon can bend without disrupting the fiber organization needed for splicing.
Quality Checks For Consistent Ribbon Production
Instead of using assumed pass limits, dependable fiber ribbon quality checks focus on defined features. Design factors named in the patent include bond spacing, 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 checking because shifts may change ribbon shape and bond geometry.
Assess Ribbon Flexibility And Rollability
To evaluate ribbon rollability, watch whether it bends and gathers while keeping fibers in their original order. Throughout the ribbon design, evaluate bond spacing and flexibility. These comparisons are design checks, not universal production tolerances.
Verify 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 start again when a ribbon has more than 12 fibers.
Applications, Cable Integration, And Splicing Benefits
By rolling within a cable, intermittently bonded ribbons allow more fibers in 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 offers FusionLink and MassLink with FlexRibbon. Dry water blocking is used in FusionLink, which comes with either 250 μm or 200 μm ribbon. EcoSpan aerial cable supports spans of up to 300 feet under NESC Heavy loading conditions. FlexDrop is a small-diameter outdoor option that accommodates up to two 12-fiber ribbons.
Enable Mass-Fusion Splicing And Faster Deployment
Mass-fusion splicing connects several ribbon fibers in a single operation, often 12 at once. On compatible ribbon routes, this method can reduce splice time. For loose-tube cable connections, technicians separate the ribbon fibers and splice them one by one using a single-fiber splicer.
Review Indoor, Outdoor, Access, And Broadband Applications
Applications for ribbon cable include point-to-point network links, indoor FTTH systems, MTP wiring-box links, and urban trunk routes. Choosing indoor and outdoor fiber cable to suit the route matches its construction with building, aerial, and underground requirements.
Conclusion
An intermittent bonded ribbon line guide brings together fiber layout, bond placement, curing, and inspection. The result is a flexible optical fiber ribbon that remains organized 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.
Flexible ribbons also support mass-fusion ribbon splicing, allowing crews to join multiple fibers at once. Prysmian describes FlexRibbon in various cable designs, including compact configurations containing up to 6,912 fibers.
Manufacturers and network planners need to manage fiber alignment, bond strength, and rollability. This balance may make cable packaging easier while ensuring ribbons remain prepared for efficient installation and splicing.