NW Tape: Temp Data

Separate short-term heat data from cable ratings. Non woven tape temperature resistance cannot be reduced to one number. A brief manufacturing heat exposure, a laboratory short-term stability result, an ageing-derived thermal endurance value and the finished cable’s continuous operating limit answer different questions. Engineers should compare time, test method, specimen, endpoint and cable construction before approving a grade.

Conceptual material visualization; not a Chaowang product test or temperature claim.

What Non Woven Tape Temperature Resistance Actually Means

Temperature data is useful only when the exposure and acceptance criterion are defined. Four questions that sound similar can require different evidence:

• Process peak: can the tape pass a short heating stage during extrusion or another manufacturing operation without unacceptable change?
• Short-term stability: what test temperature, duration, load and post-exposure property define the published result?
• Thermal endurance: how does a chosen property change across multiple ageing temperatures and times?
• Finished-cable operating limit: is the complete cable construction qualified for its specified service condition?

These values are not interchangeable. IEC 60216-1:2025 describes ageing procedures for deriving thermal-endurance characteristics, while IEC 60216-3 covers calculations from fixed ageing temperatures and variable ageing times. That framework depends on a chosen diagnostic property and endpoint; it is not simply a brief maximum-temperature check.

Read Short-Term and Long-Term Tape Data Without Changing Its Meaning

The public CW-1 non-woven binding tape table currently lists 230°C for short-term stability and 90°C for long-term stability, with Hytest-5 and IEC 216 shown as the respective methods. Those rows describe the published material specification. The page does not state the short-term exposure time, loading, atmosphere, diagnostic property or finished-cable operating-temperature approval.

Consequently, neither number should be copied into a cable drawing under a different label without supporting documentation. Request the current datasheet or test protocol and confirm:

• the exact grade, specification revision and applicable test-method edition;
• specimen construction, conditioning, temperature tolerance and exposure duration;
• mechanical load, atmosphere, measured property and failure or retention criterion;
• whether the value is a guaranteed requirement, a typical result or a reference value;
• the checks required after any change to fiber web, binder, thickness or converting process.

Conceptual time-and-temperature comparison; not an oven test or pass/fail result.

Match the Temperature Profile to the Tape's Cable-Layer Duty

The Chaowang Non Woven Tape range includes binding, flame-retardant, reinforced and semi-conductive product families. A shared polyester base does not make their layer duties, binder systems or acceptance plans identical. The separate CW-5 water-blocking tape family also includes a swelling function that requires its own post-exposure checks.

For any non woven cable tape, use the temperature at the tape layer rather than assuming it equals an extruder setpoint. Exposure can vary with tooling, distance from the heat source, line speed, cable mass and cooling. Record the estimated or measured tape-layer profile and the time at temperature. Then inspect the properties that matter to that layer: breakage, shrinkage, embrittlement, fiber shedding, binder transfer, blocking, thickness change, electrical behavior when specified, or water-blocking response when applicable.

A controlled line trial should use the intended tape grade, roll format, cable construction and process window. Begin with documented settings, tary one factor at a time and retain before-and-after samples. A tape that remains visually white is not automatically acceptable; the relevant functional property must still meet the purchase and cable-design criteria.

Build a Qualification Route From Datasheet to Finished Cable

A practical approval route connects material evidence to the actual system instead of asking one temperature row to prove everything:

1. Define the tape's layer duty, adjacent materials, expected process peak and cable service requirement.
2. Review the current datasheet, test method, exposure duration, specimen and acceptance endpoint.
3. Run a relevant bench exposure when the published protocol does not reproduce the project's risk.
4. Conduct a line trial and inspect handling plus the function-specific properties after processing.
5. Verify the finished cable against the applicable construction, customer specification and test plan.
6. Record grade, lot, protocol, results and change-control triggers for future purchases.

UL Solutions' description of full thermal ageing concerns electrical insulation systems, not a blanket requirement for nonwoven cable tape. Its useful system-level lesson is that individual components can interact under heat, moisture, mechanical stress and other exposures. A material value therefore cannot by itself certify the complete cable or every combination of neighboring materials.

Conceptual cable-layer arrangement; not a specific Chaowang cable design or qualification sample.

Frequently Asked Questions

Does 230°C short-term stability mean a tape can operate continuously at 230°C?

No. A short-term result applies only under its stated method, exposure time, specimen and acceptance criterion. Continuous operation is a different claim and normally requires endurance evidence plus confirmation for the complete cable construction. Ask for the current protocol before using any short-term number as a process limit or service rating.

Is a 90°C long-term stability row the same as a 90°C cable conductor rating?

No. A material stability row and a finished cable's conductor-temperature rating describe different subjects. The tape may sit at another temperature within the cable, and the finished design includes insulation, screens, fillers, sheath and interfaces. Use the applicable cable specification and qualification evidence rather than transferring one component value directly.

What should a buyer do when a datasheet cites IEC 216?

Request the supplier's exact method edition, test report or protocol, diagnostic property, endpoint and data interpretation. The current IEC 60216 series formalizes ageing and thermal-endurance procedures, but a method reference alone does not reveal every specimen condition or prove the finished cable's operating limit.

Can temperature data from one non woven cable tape grade cover another?

Not automatically. Fiber mass, thickness, binder, reinforcement, conductive treatment and functional additives can change behavior. Even two grades with the same published temperature row may require different post-exposure checks. Approve the named grade and revision, and define when a material or process change requires review or retesting.

Is an oven test enough to approve Non Woven Tape for Cable?

An oven exposure can isolate a material response, but it does not reproduce every tension, contact, heating and cooling condition on a cable line. Conversely, one successful line run gives limited ageing evidence. Use documentary review, targeted bench work, a representative line trial and finished-cable verification in proportion to the application risk.

What information should be sent with a temperature-related sample request?

Provide the layer function, cable drawing, adjacent materials, tape width and thickness, roll format, expected temperature-versus-time profile, line speed, cooling conditions and required post-exposure properties. State the applicable customer or cable specification. This allows the supplier to recommend a grade and sample without guessing at the service environment.

To review non woven tape temperature resistance for a new construction, send Jiangsu Chaowang New Material the cable layer duty, temperature-time profile, adjacent materials, roll dimensions and acceptance criteria. Request the current grade datasheet and a representative sample, then confirm the choice through a documented process and finished-cable plan.