Flexible Conductive Copper Paste for Reliable Flexible Electronics

2026-09-10

Flexible electronics require more than electrical conductivity. Conductive materials must also withstand bending, support efficient printing processes and maintain stable performance on flexible substrates.

As flexible circuits, printed sensors and lightweight electronic devices continue to develop, engineers face a common material challenge: how to achieve reliable conductivity without sacrificing flexibility or manufacturing efficiency.

Jufeng JL-CS01-FE Flexible Conductive Copper Paste is a one-component, fast-curing conductive material developed for flexible electronic applications. It combines high electrical conductivity, excellent flexibility, good bending resistance and practical printing performance.

JL-CS01-FE flexible conductive copper paste

What Challenges Do Flexible Conductive Circuits Face?

Conductive materials used in flexible electronics must solve several problems at the same time. Focusing only on conductivity can lead to difficulties during printing, curing, bending or final device operation.

CHALLENGE 01

Conductive Layers Need Flexibility

Flexible electronic devices may bend during manufacturing, assembly or final use. Conductive patterns therefore need both electrical performance and sufficient flexibility.

CHALLENGE 02

Long Curing Time Reduces Efficiency

Long curing processes can slow down production. For printed electronics, fast curing can help improve manufacturing efficiency and simplify process integration.

CHALLENGE 03

Different Substrates Require Compatibility

Flexible and printed electronics may use PET, PI, ceramic or metal surfaces. A conductive paste that supports different substrate types can make material evaluation and process development easier.

CHALLENGE 04

Conductivity Alone Is Not Enough

Conductive paste also needs suitable viscosity, printability and process stability so that conductive patterns can be formed consistently during manufacturing.

How JL-CS01-FE Helps Solve These Problems

JL-CS01-FE was developed specifically for flexible electronic applications. Its combination of conductivity, flexibility, fast curing and printing compatibility helps manufacturers address several process and performance requirements with one conductive material.

Excellent Flexibility Designed for flexible and bendable electronic structures.

Fast Curing Typical curing condition of 160°C for only 2 minutes.

High Conductivity Typical volume resistivity of 1.5 × 10^-4 Ω·cm.

Multiple Substrates Suitable for PET, PI, ceramic and metal surfaces.

Designed for Flexible and Bendable Electronics

One of the main challenges in flexible electronics is maintaining conductive performance while the substrate is bent or flexed.

JL-CS01-FE combines electrical conductivity with good bending resistance, making it suitable for applications where conductive patterns are printed onto flexible or thin substrates.

conductive copper paste for flexible electronics

Fast 160°C Curing for More Efficient Processing

Production efficiency is another important factor when selecting conductive materials. JL-CS01-FE has a typical curing condition of 160°C for 2 minutes.

The material can be cured in an oven under either air or nitrogen. Actual curing time can be adjusted depending on printed pattern size and process requirements.

Conductivity and Printability in One Material

JL-CS01-FE provides a typical volume resistivity of 1.5 × 10^-4 Ω·cm. Its solid content is above 80%, while the typical viscosity is 25±5 Pa·s.

These properties provide a practical foundation for printed conductive patterns used in flexible circuits, sensors and other electronic manufacturing processes.

JL-CS01-FE Technical Specifications

Product	JL-CS01-FE Flexible Conductive Copper Paste
Appearance	Brown-gray paste
Viscosity	25±5 Pa·s, viscometer @20 rpm
Solid Content	>80%
Typical Curing Condition	160°C / 2 min, air or nitrogen, oven
Volume Resistivity	1.5 × 10^-4 Ω·cm
Applicable Surfaces	PET / PI / Ceramic / Metal
Printing Process	Screen printing / stencil printing
Recommended Screen	100–300 mesh
Storage Temperature	-10°C to 10°C
Shelf Life	3 months

Applications of JL-CS01-FE Flexible Conductive Copper Paste

JL-CS01-FE is designed for flexible electronic manufacturing and printed conductive structures across several application areas.

Flexible Electronics

Conductive structures that require a combination of electrical conductivity and flexibility.

Pressure Touch Devices

Flexible pressure-touch components and related printed conductive structures.

Printed Circuits

Screen-printed or stencil-printed conductive circuit patterns on compatible substrates.

Sensors

Printed conductive structures for flexible sensors and other precision electronic manufacturing processes.

Recommended Processing Guide

Storage: Store JL-CS01-FE at -10°C to 10°C and avoid high-humidity storage conditions.

Return to Room Temperature: After removing the product from cold storage, allow it to stand at approximately 25°C for about 4 hours until fully thawed. Remove moisture from the outside of the container before use.

Mixing: Centrifugal mixing for approximately 3–5 minutes before use is recommended for better processing performance.

Printing: JL-CS01-FE can be applied by stencil or screen printing. A screen range of 100–300 mesh is recommended.

Curing: Place the printed sample in an oven and heat it from room temperature to 160°C. Maintain the temperature for approximately 2 minutes. The curing time can be extended according to the size of the printed pattern.

Why Sample Testing Matters

Conductive paste performance depends on multiple factors, including substrate material, printing thickness, circuit design, screen or stencil parameters and curing conditions.

For this reason, Jufeng recommends testing JL-CS01-FE under your actual production conditions before mass production. This helps engineers evaluate printing quality, curing behavior, conductivity and compatibility with the target substrate.

flexible printed circuit conductive copper paste

Looking for a Conductive Copper Paste for Your Flexible Electronics Project?

Every flexible electronics project has different substrate, printing and conductivity requirements. Instead of selecting conductive materials only from datasheet values, project-specific evaluation can help reduce development risk.

Tell our team your substrate type, printing process, curing requirements and target application. We can provide technical information and samples for evaluation.