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Writer's pictureFlex Plus Tech team

Unraveling the Complexities: Crafting 4-Layer 4-Meter Long FPCB in a Chinese FPCB Factory

Updated: Oct 24

(Kindly note for United States customers, 4 Meter is about 13.12 Feet Flex PCB)


Delving into the World of Extended-Length FPCB

Crafting lengthy and multi-layered Flexible Printed Circuit Boards (FPCB) is a feat that challenges the norms of manufacturing. Flex Plus, a pioneering FPCB manufacturer/ FPC Factory in China, stands resilient in addressing these intricate challenges. Leveraging innovative technology and profound expertise, Flex Plus engineers exceptional 4-meter-long, 4-layer FPCBs. Let's dive into the scenes of this extraordinary manufacturing process.


long FPCB with rigid PCB at the end
4-meter long FPCB, 13.12-Feet long Flex PCB

(1. The structure of 4-layer, long FPCB is: single sided FPC + double sided FPC+ single sided FPC.

2. This long FPCB picture is blurred on purpose due to NDA with customer)


Specialized Machinery for Extended-Length Precision

The demand for long FPCBs necessitates specialized equipment. Flex Plus invests in state-of-the-art machinery, including large exposure machines and tailored processing tools. These advancements ensure meticulous precision and consistency along the entire length of the FPCBs, imperative for flawless functionality.


Mastering the Art of Sectorial Assembly

In scenarios where specialized machinery isn't available, Flex Plus's adept technicians showcase their mastery in sectorial assembly techniques. They deftly segment the FPCBs into manageable sectors, enabling meticulous assembly and processing, the tolerance of each connecting point is 0.05mm. This innovative approach preserves the FPCB's integrity and performance, irrespective of its length.


Excelling in Copper Plating Consistency

Consistent and even copper plating along a 4-meter FPCB requires exemplary sourcing partners. Flex Plus collaborates with reputable suppliers known for their prowess in delivering uniform copper plating. These strategic alliances guarantee that every inch of the FPCB meets stringent sourcing quality assurance standards.


Precision Machining

A Hallmark of Excellence: Machining lengthy long FPCB demands unparalleled precision. Flex Plus boasts cutting-edge machines capable of handling extended-length FPCBs without compromising accuracy or intricacy. This technological edge allows for intricate circuitry and excellent details even on longer boards.


Quality Assurance as a Pillar of Excellence

At Flex Plus, stringent quality control measures prevail at every stage of manufacturing. Each segment of the 4-meter-long FPCB undergoes meticulous inspection, ensuring alignment with design specifications and stringent performance benchmarks. Rigorous testing validates the durability and functionality of the end product.


Material Selection for Long FPCB

The Foundation of Reliability: Materials play a pivotal role in ensuring reliability for long FPCBs/long Flex PCB. Flex Plus selectively opts for high-grade, resilient materials tailored explicitly for extended-length boards. These materials, prized for their flexibility and resilience, withstand the rigors of demanding applications, which is the reason Flex Plus is the most trustworthy Flexible Printed Circuits supplier for Military and satellite applications.


Navigating Complexity of Long FPCB

Flex Plus' Forward Journey: Manufacturing 4-meter-long, 4-layer FPCBs brings forth an array of complexities, from precision requirements to technological finesse. Flex Plus, a trailblazing FPCB factory in China, conquers these challenges through cutting-edge technology, expert craftsmanship, and strategic partnerships. Continuously innovating and refining processes, Flex Plus emerges as the forefront pioneer from various Flex PCB factories and manufacturers, delivering superior extended-length & Long Flex PCBs meeting the modern industry's demands.


This article is a brief introduction of how Flex Plus is able to manufacture long FPCB, our tech team will bring more minute details in further blog articles, welcome valued customers write your concerns to mail:

ring the phone: +86 184 5004 5626

sending text on whatsapp: +86 184 5004 5626



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