Choose binding tape by function, grade and a controlled line trial. On the line, non woven binding tape must hold the core without unwanted stretch, wrinkles or breaks, then survive extrusion and stripping as designed.

Chaowang CW-1 binding tape rolls.

What Non Woven Binding Tape Does Inside a Cable

Core binding tape keeps assembled elements in a controlled geometry before later stages. In one documented Corning optical-cable procedure, binder tape secures buffer tubes around a central member — a useful example of the retaining job, though each design has its own layer sequence and settings. Binding, bedding, and separating are related terms; they are not interchangeable specs.

• Binding: retains grouped conductors, insulated cores, tubes, or fillers during handling.
• Bedding: forms an intermediate layer between an assembled core and another cable layer.
• Separation: creates a defined interface between adjacent materials or components.

Show the intended position on the cable drawing before you pick a tape. An industry cable-design overview notes that binders can affect core roundness, flexibility, and handling — outcomes of the whole construction, not the tape name alone.

CW-1 is a chemically bonded polyester nonwoven (polyester fiber with adhesive in the construction). That does not make it a pressure-sensitive wire-harness tape. If you need tack, hand tear, or adhesive peel, state it separately and ask for a suitable sample.

Simplified function diagram; not to scale.

How Material Properties Affect Taping and Extrusion

Review these four properties together — one number on a quote is not enough:

• Mass per unit area: separates grades; read it with thickness and construction.
• Thickness: drives build-up under the next layer. A paper-acceptable value can still ridge if overlap piles up locally.
• Tensile strength: a basis for break risk under planned tension — not a substitute for a line trial.
• Elongation: how the tape yields under tension. Too much stretch can change coverage or let the wrapped core relax.

The published CW-1 non-woven binding tape for cable cores range runs CW-1-20 to CW-1-80. Depending on grade: mass about 20±4 to 80±5 g/m²; thickness 0.14±0.03 to 0.31±0.04 mm; min tensile 15 to 60 N/cm; min elongation 10% to 12%. Quote a model number, not only the family name.

The same table lists short- and long-term stability of 230°C and 90°C. The product page does not spell out every duration and condition, so do not treat those as a finished-cable temperature rating. Use the current datasheet and validate in your process window.

How to Select a CW-1 Grade and Run a Line Trial

1. Define the job. Tape position, binding direction, longitudinal or helical wrap, target overlap, and what the layer must do.
2. Shortlist by combined properties. Match mass, thickness, tensile, and elongation to build-up and tension limits. Heavier is not automatically better.
3. Confirm supply geometry. Slit width, roll length or max OD, core ID, winding format — agree these before sampling; they are not fully listed on the CW-1 page.
4. Run under production-relevant conditions. Watch unwind, edges, lint, joints, tracking, tension, overlap, and breaks. Record speed and settings.
5. Inspect the finished cable. Core retention, roundness, local build-up, post-extrusion surface, stripping, and every required cable test.

Keep function as the first filter. Ordinary binding tape is not longitudinal water protection. For swelling after moisture contact, review CW-5 water-blocking tape as a separate family. Screening, flame performance, or other special jobs need their own evidence.

Compare options in Chaowang’s non-woven cable tape range, then request the datasheet and sample for the shortlisted construction.

Five-step qualification flow for engineering and procurement.

What to Include in a Datasheet and Sample Request

A tight RFQ gets a realistic sample and makes quotations comparable:

• cable type, construction drawing, exact tape position;
• binding, bedding, or separation function;
• required mass, thickness, tensile, elongation — or preferred CW-1 grade;
• tape width, core ID, max roll OD, roll length, winding format;
• application method, overlap, line speed, normal taping tension;
• downstream extrusion, stripping expectations, approval tests;
• sample quantity, trial schedule, packaging, requested documents.

The CW-1 page lists ISO 9073 methods for mass, thickness, tensile and elongation, and ISO 287 for moisture. Those describe how properties are measured — they are not product certifications. Ask for the current datasheet, agreed methods, and a representative sample when a value matters to qualification.

Frequently Asked Questions

What is non woven binding tape used for?
Retaining assembled cable elements and providing a controlled layer for later processing. Role and position come from the cable design.

Is CW-1 a self-adhesive wire-harness tape?
No PSA performance is published for CW-1. Adhesive is part of the chemically bonded nonwoven. Do not assume tack or peel without a sample and datasheet.

Does ordinary binding tape also block water?
Not automatically. Binding and water blocking are different jobs. Specify a dedicated water-blocking construction when you need swelling or longitudinal water control.

Which CW-1 grade should I choose?
Start from build-up and taping tension, then compare grade mass, thickness, tensile, and elongation. Approve after a production-relevant trial and cable tests.

Which roll dimensions belong in an RFQ?
Width, core ID, roll OD or length, winding format — plus line speed, overlap, and payoff space.

Can published thermal values be the cable temperature rating?
No. Treat them as tape stability under referenced conditions. Confirm the datasheet and qualify the full cable.

For a project-specific non woven binding tape review, contact Jiangsu Chaowang New Material with the drawing, CW-1 property range, roll geometry, and trial conditions. Ask for a current datasheet and representative sample before production approval.