In the highly precise ecosystem of electronic component manufacturing, packaging, and assembly, the reliability of minor structural and protective elements dictates the failure rate of the entire supply chain. Surface Mount Technology (SMT) demands absolute precision. Microchips, passive capacitors, resistors, and connectors must transition from bulk storage to pick-and-place processing heads at speeds measured in milliseconds. The primary shield protecting these micro-scale components during high-speed transit and automated feeding is the carrier tape assembly system, which is sealed with specialized cover tapes.
Simultaneously, macro-electrical equipment—such as automotive EV batteries, transformers, sub-assemblies, and high-density PCB units—relies on high-performance insulation tapes (like acetate cloth, PET, and glass fiber matrices) to withstand mechanical stress, high dielectric forces, and extreme temperatures. Without functional polymer tapes developed specifically for electronic applications, modern automated manufacturing would stall due to triboelectric discharge, mechanical misalignments, and premature dielectric breakdown.
China has long moved past basic assembly; today, it stands as the global hub for advanced material formulation and high-precision electronic component packaging solutions. Selecting a Tier-1 Chinese manufacturer for functional tapes offers distinct structural advantages:
Established in June 2007, Jiangsu Yongjia Electronic Materials Co., Ltd. has spent over 18 years refining the science of functional polymer coatings and substrate engineering. Located in the industrial hub of Nantong, our facilities span a 16,000-square-meter campus with a modern 9,000-square-meter cleanroom production plant.
Our core capabilities center on high-performance carrier tape covers, heat-seal coatings, and pressure-sensitive electrical tapes designed to shield microelectronics and power systems globally. Through constant iteration and R&D investment, we serve leading international OEMs, providing critical components that streamline pick-and-place SMT pipelines.
Formulated for SMT carrier tapes, our heat-seal cover tapes are designed to provide consistent sealing strength when applied to polystyrene (PS), polycarbonate (PC), or polyester (PET) base carrier sheets. By utilizing a heat-activated adhesive layer, they maintain reliable peel strength even after long-term aging under high temperatures and transport vibrations. This consistency is essential to prevent tape tearing or component spilling on modern, high-speed SMT assembly lines.
Technical Metric Benchmark: Stable peel force maintained within a narrow window of 0.2N to 0.8N (under standard angle of 165–180 degrees at 300mm/min peeling speed), minimizing structural fluctuation during high-speed feeder unwinding.
Designed for thermal-sensitive components, pressure-sensitive adhesive (PSA) cover tapes seal carrier tapes without requiring heat. This eliminates the risk of heat damage to delicate integrated circuits (ICs) or micro-passive components. Our PSA tapes offer quick bonding and stable adhesion without adhesive residue, allowing easy removal at the feeder stage.
Constructed using premium woven cellulose acetate fabric coated with acrylic or rubber flame-retardant adhesives, our acetate cloth tapes provide excellent conformity, mechanical strength, and electrical insulation. Widely used for outer wrapping in high-voltage transformers, wire harness packaging, and coil insulation, they offer reliable performance under continuous operating temperatures up to 130°C and meet UL510 flame-retardant requirements.
During dry winter seasons or high-velocity feeding cycles, friction between carrier pockets and cover tapes can generate significant static charges. Unchecked, this voltage can damage sensitive micro-controllers, optoelectronics, and logic chips. To address this risk, we engineer our cover tapes with advanced permanent anti-static layers on both the top and bottom surfaces. Unlike temporary chemical coatings that wash off or degrade, our static dissipative layers maintain surface resistance within the critical $10^5$ to $10^{11}$ ohms/sq window, protecting components from electrostatic discharge throughout their lifecycle.
Fluctuating peel force is a major cause of SMT feeder downtime. If a cover tape adheres too strongly, the pneumatic feeder jerks during separation, causing small chips to jump out of their pockets (pop-out effect). If the adhesion is too weak, the cover tape can detach prematurely, spilling components. Our R&D team optimizes chemical cross-linking in the adhesive layers to maintain stable peel force curves across different aging conditions, storage temperatures, and humidity cycles.
Power electronics and electric vehicle (EV) motor windings generate significant heat. Standard adhesive tapes degrade under continuous high temperatures, leading to adhesive transfer, peeling, or loss of dielectric protection. By selecting glass fiber and acetate cloth backing matrices coupled with cross-linked silicones or modified acrylics, our insulation tapes maintain structural and dielectric performance at continuous temperatures ranging from 130°C to 180°C.
For procurement officers, sourcing engineers, and supply chain directors, choosing a component material supplier requires evaluating key operational parameters beyond initial pricing:
As the global electronics packaging sector demands tighter dimensional tolerances and higher anti-static reliability, Jiangsu Yongjia continues to invest in advanced multi-station extrusion lines to stabilize base film properties and secure a leading position in the industry.
With the rapid miniaturization of surface-mount components, our newly developed self-adhesive cover tape series offers a low-peel-force solution that operates without heat, protecting heat-sensitive chips and active circuits.
To support domestic semiconductor supply chain localization, Jiangsu Yongjia has introduced high-stability heat-seal cover tapes. These tapes provide consistent peel forces under aging conditions, matching the requirements of advanced SMT chip feeders.
Heat-seal cover tapes require a heated sealing shoe (typically 130°C to 200°C) to activate the dry adhesive and bond with the carrier tape. Pressure-sensitive (self-adhesive) cover tapes use a sticky adhesive that bonds instantly under mechanical pressure, making them ideal for packaging heat-sensitive electronic components.
We use premium, high-molecular-weight polymers and control the curing process in our adhesive formulations. Each production batch undergoes oven-aging tests at 60°C for 72 hours, ensuring the peel force remains within standard limits (0.2N to 0.8N) after transit and storage.
Friction during unwinding can generate static charges on the outer face of the tape, while friction inside the pockets affects the inner face. Double-sided ESD treatment prevents dust attraction on the outside and static discharge damage to components on the inside.
Yes. Our flame-retardant acetate cloth and PET tapes are formulated with halogen-free flame retardants, meeting UL510 requirements and RoHS/REACH environmental standards for consumer and industrial electronics.
YONGJIA Electronic
