{"id":10746,"date":"2025-07-21T11:37:13","date_gmt":"2025-07-21T03:37:13","guid":{"rendered":"https:\/\/www.bestpcbs.com\/blog\/?p=10746"},"modified":"2025-07-21T11:38:38","modified_gmt":"2025-07-21T03:38:38","slug":"polyimide-pcb-manufacturer-in-china-over-18-years","status":"publish","type":"post","link":"https:\/\/www.bestpcbs.com\/blog\/2025\/07\/polyimide-pcb-manufacturer-in-china-over-18-years\/","title":{"rendered":"Polyimide PCB Manufacturer in China, Over 18 Years"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 ez-toc-wrap-left counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.bestpcbs.com\/blog\/2025\/07\/polyimide-pcb-manufacturer-in-china-over-18-years\/#What_Is_Polyimide_PCB\" >What Is Polyimide PCB?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.bestpcbs.com\/blog\/2025\/07\/polyimide-pcb-manufacturer-in-china-over-18-years\/#How_Thick_Is_a_Polyimide_PCB\" >How Thick Is a Polyimide PCB?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.bestpcbs.com\/blog\/2025\/07\/polyimide-pcb-manufacturer-in-china-over-18-years\/#Polyimide_PCB_Material_Data_Sheet_Properties\" >Polyimide PCB Material Data Sheet &amp; Properties<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.bestpcbs.com\/blog\/2025\/07\/polyimide-pcb-manufacturer-in-china-over-18-years\/#What_Is_the_Thermal_Conductivity_of_Polyimide_Flex_PCB\" >What Is the Thermal Conductivity of Polyimide Flex PCB?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.bestpcbs.com\/blog\/2025\/07\/polyimide-pcb-manufacturer-in-china-over-18-years\/#What_Are_the_Pros_and_Cons_of_Polyimide_Circuit_Board\" >What Are the Pros and Cons of Polyimide Circuit Board?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.bestpcbs.com\/blog\/2025\/07\/polyimide-pcb-manufacturer-in-china-over-18-years\/#What_Are_Applications_of_Flexible_Polyimide_PCB\" >What Are Applications of Flexible Polyimide PCB?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.bestpcbs.com\/blog\/2025\/07\/polyimide-pcb-manufacturer-in-china-over-18-years\/#How_Are_Polyimide_PCBs_Manufactured\" >How Are Polyimide PCBs Manufactured?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.bestpcbs.com\/blog\/2025\/07\/polyimide-pcb-manufacturer-in-china-over-18-years\/#Polyimide_PCB_Manufacturer_in_China_%E2%80%93_EBest_Circuit_Best_Technology\" >Polyimide PCB Manufacturer in China \u2013 EBest Circuit (Best Technology)<\/a><\/li><\/ul><\/nav><\/div>\n<div class=\"yzp-no-index\"><\/div>\n<p>Why choose<strong><a href=\"https:\/\/www.bestpcbs.com\/blog\/2025\/07\/polyimide-pcb-manufacturer-in-china-over-18-years\/\" title=\"\"> polyimide PCB<\/a><\/strong>?\u200c This guide details their critical properties, thickness, thermal conductivity, pros and cons, manufacturing processes and applications.<\/p>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0);color:#0697f2\" class=\"has-inline-color\">Are you still troubled by these problems?<\/mark><\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong><mark style=\"background-color:rgba(0, 0, 0, 0);color:#0697f2\" class=\"has-inline-color\">Complex circuit design leads to low yield?<\/mark><\/strong><\/li>\n\n\n\n<li><strong><mark style=\"background-color:rgba(0, 0, 0, 0);color:#0697f2\" class=\"has-inline-color\">Traditional materials degrade in humid environment?<\/mark><\/strong><\/li>\n\n\n\n<li><strong><mark style=\"background-color:rgba(0, 0, 0, 0);color:#0697f2\" class=\"has-inline-color\">Does micro-aperture processing affect circuit accuracy?<\/mark><\/strong><\/li>\n<\/ul>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0);color:#0c99f1\" class=\"has-inline-color\">EBest Circuit (Best Technology) \u4e28Polyimide PCB Manufacturer in China Over 18 years:<\/mark><\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong><mark style=\"background-color:rgba(0, 0, 0, 0);color:#069bf8\" class=\"has-inline-color\">High-precision graphic transfer technology: using laser direct imaging (LDI) process, line width\/line spacing up to 25\u03bcm, yield increased by 30%.<\/mark><\/strong><\/li>\n\n\n\n<li><strong><mark style=\"background-color:rgba(0, 0, 0, 0);color:#069bf8\" class=\"has-inline-color\">Ultra-low water absorption material: 0.2% water absorption formula, insulation resistance retention rate in humid environment> 95%.<\/mark><\/strong><\/li>\n\n\n\n<li><strong><mark style=\"background-color:rgba(0, 0, 0, 0);color:#069bf8\" class=\"has-inline-color\">Precision micro-hole processing: CO2 laser + UV laser combined drilling, aperture accuracy \u00b115\u03bcm, hole wall roughness &lt;10\u03bcm<\/mark><\/strong>.<\/li>\n<\/ul>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0);color:#019af9\" class=\"has-inline-color\">Welcome to contact us if you have any request for polyimide PCB: sales@bestpcbs.com.<\/mark><\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_Is_Polyimide_PCB\"><\/span>What Is Polyimide PCB?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>A <strong><a href=\"https:\/\/www.bestpcbs.com\/blog\/2025\/07\/polyimide-pcb-manufacturer-in-china-over-18-years\/\" title=\"\">polyimide PCB<\/a> <\/strong>is a flexible printed circuit board utilizing polyimide as its dielectric substrate, providing remarkable flexibility for repeated bending, folding, or twisting without mechanical damage. This polymer offers exceptional thermal stability, handling temperatures up to 400\u00b0C, a low dielectric constant near 3.5, and high tensile strength, making it suitable for electronics requiring dynamic movement or intricate three-dimensional packaging.<\/p>\n\n\n\n<p>Commonly applied in neural implants and wearable devices, these PCBs enable reliable electrical connections in space-constrained environments while maintaining performance under stress. Fabrication involves microelectronics-compatible techniques, supporting mass production for high-density interconnects across medical and consumer applications.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><a href=\"https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2025\/07\/main-29.jpg\"><img decoding=\"async\" src=\"https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2025\/07\/main-29.jpg\" alt=\"What Is Polyimide PCB?\" class=\"wp-image-10753\" style=\"width:840px;height:auto\"\/><\/a><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_Thick_Is_a_Polyimide_PCB\"><\/span>How Thick Is a Polyimide PCB?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><strong>Core Material Thickness<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Base Polyimide Film\u200c: <\/strong>Typically \u200c<strong>12.5 \u03bcm to 100 \u03bcm (0.0005\u20130.004 inches)\u200c<\/strong>, with \u200c25 \u03bcm (0.001 inch)\u200c and \u200c50 \u03bcm (0.002 inches)\u200c being industry standards.<\/li>\n<\/ul>\n\n\n\n<p><strong>Total Stackup Thickness<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Single-Layer Flexible PCB\u200c: \u200c50\u2013125 \u03bcm<\/strong> (0.002\u20130.005 inches)\u200c when combined with copper foil (9\u201318 \u03bcm).<\/li>\n\n\n\n<li><strong>\u200cMulti-Layer Designs\u200c:<\/strong> Ranges \u200cup to <strong>0.3 mm (0.012 inches)\u200c for 4\u20136 layer<\/strong> configurations using adhesive bonding.<\/li>\n<\/ul>\n\n\n\n<p><strong>Influencing Factors<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Copper Foil\u200c: <\/strong>Ultra-thin \u200c9\u201318 \u03bcm\u200c electrodeposited copper reduces bulk.<\/li>\n\n\n\n<li><strong>\u200cAdhesive Layers\u200c:<\/strong> Bonding films add \u200c10\u201325 \u03bcm\u200c per layer; adhesive-less laminates reduce total thickness to \u200c30 \u03bcm\u200c.<\/li>\n\n\n\n<li><strong>\u200cStiffeners\u200c:<\/strong> Localized PI or steel reinforcements (\u200c0.1\u20130.3 mm\u200c) enhance connector zones.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Polyimide_PCB_Material_Data_Sheet_Properties\"><\/span>Polyimide PCB Material Data Sheet &amp; Properties<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Property Category<\/strong><\/td><td><strong>Test Parameter<\/strong><\/td><td><strong>Test Standard<\/strong><\/td><td><strong>Value with Unit<\/strong><\/td><td><strong>Characteristics<\/strong><\/td><\/tr><tr><td rowspan=\"3\">Physical Properties<\/td><td>Density<\/td><td>ASTM D792<\/td><td>1.43 g\/cm\u00b3<\/td><td>Lightweight design advantage<\/td><\/tr><tr><td>Water Absorption<\/td><td>ASTM D570<\/td><td>0.3%<\/td><td>Low moisture absorption for high-frequency stability<\/td><\/tr><tr><td>Flammability Rating<\/td><td>UL94<\/td><td>Non-flammable<\/td><td>Complies with aerospace safety requirements<\/td><\/tr><tr><td rowspan=\"3\">Mechanical Properties<\/td><td>Tensile Strength<\/td><td>ASTM D638<\/td><td>90 MPa<\/td><td>3\u00d7 stronger than FR-4 substrates<\/td><\/tr><tr><td>Elongation at Break<\/td><td>ASTM D638<\/td><td>6-8%<\/td><td>High ductility for dynamic bending applications<\/td><\/tr><tr><td>Flexural Strength<\/td><td>ASTM D790<\/td><td>98 MPa<\/td><td>Supports 5mm bend radius designs<\/td><\/tr><tr><td rowspan=\"3\">Thermal Properties<\/td><td>HDT @1.82MPa<\/td><td>ASTM D648<\/td><td>360\u2103<\/td><td>Withstands reflow soldering<\/td><\/tr><tr><td>Continuous Operating Temp.<\/td><td>UL746B<\/td><td>260\u2103<\/td><td>Suitable for automotive electronics<\/td><\/tr><tr><td>CTE (Z-axis)<\/td><td>ASTM D696<\/td><td>1-5\u00d710\u207b\u2075 \/\u2103<\/td><td>Matches copper foil expansion (Cu: 17\u00d710\u207b\u2076\/\u2103)<\/td><\/tr><tr><td rowspan=\"3\">Electrical Properties<\/td><td>Dk @1MHz<\/td><td>IEC 60250<\/td><td>3.4 <\/td><td>Low signal loss for high-frequency transmission<\/td><\/tr><tr><td>Volume Resistivity<\/td><td>IEC 60093<\/td><td>10\u00b9\u2077 \u03a9\u00b7cm<\/td><td>100\u00d7 higher insulation than standard materials<\/td><\/tr><tr><td>Dielectric Strength<\/td><td>IEC 60243<\/td><td>110-120 kV\/mm<\/td><td>Superior high-voltage breakdown resistance<\/td><\/tr><tr><td rowspan=\"3\">Special Performance<\/td><td>Flex Life @5mm radius<\/td><td>IPC-6013D<\/td><td>&gt;100,000 cycles<\/td><td>Validated in smart wearable devices<\/td><\/tr><tr><td>Peel Strength (Cu foil)<\/td><td>IPC-TM-650<\/td><td>\u22651.0 N\/mm<\/td><td>Ensures flex circuit reliability<\/td><\/tr><tr><td>Min. Line Width\/Spacing<\/td><td>IPC-2223<\/td><td>30\/30 \u03bcm<\/td><td>Ultra-high-density routing capability<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_Is_the_Thermal_Conductivity_of_Polyimide_Flex_PCB\"><\/span>What Is the Thermal Conductivity of Polyimide Flex PCB?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Material Type<\/strong><\/td><td><strong>Thermal Conductivity<\/strong><\/td><td><strong>Enhancement Mechanism<\/strong><\/td><\/tr><tr><td>Pure Polyimide (PI)<\/td><td>0.18 W\/(m\u00b7K)<\/td><td>N\/A (base material)<\/td><\/tr><tr><td>PI\/CNNS Nanocomposite<\/td><td>2.04 W\/(m\u00b7K) (+1033%)<\/td><td>CNNS in-plane self-orientation<\/td><\/tr><tr><td>Graphene-PI Composite<\/td><td>Up to 739.56 W\/(m\u00b7K)<\/td><td>Layered graphene thermal networks<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_Are_the_Pros_and_Cons_of_Polyimide_Circuit_Board\"><\/span>What Are the Pros and Cons of Polyimide Circuit Board?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><strong>Pros (Advantages)\u200c<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>High wiring density and miniaturization\u200c: <\/strong>Enables compact designs for space-constrained applications like mobile devices or wearables.<\/li>\n\n\n\n<li><strong>Lightweight and thin profile\u200c:<\/strong> Reduces overall weight and thickness of electronic products, ideal for portable electronics.<\/li>\n\n\n\n<li><strong>Excellent flexibility and durability\u200c: <\/strong>Can withstand millions of dynamic bends without wire breakage, supporting complex 3D assemblies.<\/li>\n\n\n\n<li><strong>Versatility in spatial layout\u200c: <\/strong>Allows arbitrary scaling and movement in three-dimensional space for integrated component connections.<\/li>\n\n\n\n<li><strong>Broad applicability\u200c: <\/strong>Suitable for high-reliability fields such as aerospace, military, and digital cameras due to robust insulating properties.<\/li>\n<\/ul>\n\n\n\n<p><strong>Cons (Disadvantages)\u200c<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>High initial cost\u200c:<\/strong> Design, routing, and photographic processes are expensive due to specialized manufacturing requirements.<\/li>\n\n\n\n<li><strong>Limited use for general applications\u200c: <\/strong>Typically justified only for specific needs, not cost-effective for standard PCBs.<\/li>\n\n\n\n<li><strong>Maintenance challenges\u200c:<\/strong> Repair and rework, such as soldering, require trained personnel to avoid damage.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2025\/07\/2-2.jpg\"><img decoding=\"async\" src=\"https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2025\/07\/2-2.jpg\" alt=\"What Are the Pros and Cons of Polyimide Circuit Board?\" class=\"wp-image-10755\" style=\"aspect-ratio:3\/2;object-fit:cover\"\/><\/a><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_Are_Applications_of_Flexible_Polyimide_PCB\"><\/span>What Are Applications of Flexible Polyimide PCB?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><strong>Applications of <a href=\"https:\/\/www.bestpcbs.com\/blog\/2025\/07\/polyimide-pcb-manufacturer-in-china-over-18-years\/\" title=\"\">Flexible Polyimide PCB<\/a><\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Consumer Electronics &#8211;<\/strong> Foldable displays (smartphones\/tablets).<\/li>\n\n\n\n<li><strong>Aerospace &#8211; <\/strong>High-temperature wiring in satellites\/spacecraft.<\/li>\n\n\n\n<li><strong>Medical Devices &#8211; <\/strong>Wearable sensors (ECG patches\/implantable modules).<\/li>\n\n\n\n<li><strong>Automotive &#8211; <\/strong>Battery management systems (EVs) &amp; autonomous vehicle sensors.<\/li>\n\n\n\n<li><strong>Industrial Automation &#8211; <\/strong>Flexible joints in robotic arms\/motion control systems.<\/li>\n\n\n\n<li><strong>Energy &#8211;<\/strong> Solar panel interconnections (flexible photovoltaic modules).<\/li>\n\n\n\n<li><strong>Telecommunications &#8211;<\/strong> High-frequency signal routing in 5G\/mmWave devices.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2025\/07\/1-1.jpg\"><img decoding=\"async\" src=\"https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2025\/07\/1-1.jpg\" alt=\"What Are Applications of Flexible Polyimide PCB?\" class=\"wp-image-10754\" style=\"aspect-ratio:3\/2;object-fit:cover\"\/><\/a><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_Are_Polyimide_PCBs_Manufactured\"><\/span>How Are Polyimide PCBs Manufactured?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p><strong>Manufacturing Process of Flexible Polyimide PCBs<\/strong><\/p>\n\n\n\n<p><strong>1. Material Preparation<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Base Film:<\/strong> Polyimide (PI) film (12.5\u201350\u00b5m) selected for thermal stability (Tg > 250\u00b0C).<\/li>\n\n\n\n<li><strong>Adhesive Coating: <\/strong>Epoxy\/acrylic adhesive applied to PI film for copper bonding.<\/li>\n<\/ul>\n\n\n\n<p><strong>2. Copper Cladding<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Lamination:<\/strong> Adhesive-coated PI film laminated with electrolytic copper foil (1\/3\u20132 oz) at 180\u2013200\u00b0C.<\/li>\n\n\n\n<li><strong>Temporary Carrier:<\/strong> Aluminum\/steel carrier attached for ultra-thin FPCs to prevent warping.<\/li>\n<\/ul>\n\n\n\n<p><strong>3. Circuit Patterning<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Dry Film Application: <\/strong>Photosensitive dry film laminated onto copper.<\/li>\n\n\n\n<li><strong>Exposure &amp; Development: <\/strong>UV light exposes circuit pattern; unexposed areas washed away.<\/li>\n\n\n\n<li><strong>Etching: <\/strong>Ferric chloride\/alkaline etching removes unprotected copper (line width\/spacing \u226525\u00b5m).<\/li>\n<\/ul>\n\n\n\n<p><strong>4. Coverlay Application<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>PI Coverlay: <\/strong>Second PI film with adhesive laminated over circuits for protection.<\/li>\n\n\n\n<li><strong>Laser Ablation:<\/strong> CO\u2082 laser drills precision holes (via\/pad openings).<\/li>\n<\/ul>\n\n\n\n<p><strong>5. Plating &amp; Surface Finish<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>ENIG Plating:<\/strong> Electroless nickel\/immersion gold applied to pads for solderability.<\/li>\n\n\n\n<li><strong>Stiffener Bonding: <\/strong>FR4\/PI stiffeners attached to connector zones via thermal bonding.<\/li>\n<\/ul>\n\n\n\n<p><strong>6. Testing &amp; Inspection<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>AOI:<\/strong> Automated optical inspection for defects (open\/short circuits).<\/li>\n\n\n\n<li><strong>Electrical Testing: <\/strong>Flying probe\/bed-of-nails tests verify continuity\/impedance.<\/li>\n<\/ul>\n\n\n\n<p><strong>7. Cutting &amp; Forming<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Laser Cutting: <\/strong>Precision shaping of FPC outlines.<\/li>\n\n\n\n<li><strong>Bending Test: <\/strong>Flexibility validation (1,000+ bend cycles at 180\u00b0).<\/li>\n<\/ul>\n\n\n\n<p><strong>8. Final Cleaning &amp; Drying<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Ultrasonic Cleaning:<\/strong> Removes residual particles from etching\/plating.<\/li>\n\n\n\n<li><strong>Baking:<\/strong> FPCs dried in 80\u2013100\u00b0C oven to eliminate moisture.<\/li>\n<\/ul>\n\n\n\n<p><strong>9. Packaging<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Anti-Static Protection: FPCs placed in anti-static bags with desiccant packs.<\/li>\n\n\n\n<li>Cushioning: Foam inserts or vacuum-formed trays used to prevent movement.<\/li>\n\n\n\n<li>Labeling: Barcode\/QR code labels include product ID, batch number, and RoHS compliance.<\/li>\n<\/ul>\n\n\n\n<p><strong>10. Quality Final Check<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Visual Inspection: Confirm no scratches, folds, or contamination.<\/li>\n\n\n\n<li>Electrical Recheck: Sample testing for critical parameters (e.g., impedance).<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2025\/07\/4-2.jpg\"><img decoding=\"async\" src=\"https:\/\/www.bestpcbs.com\/blog\/wp-content\/uploads\/2025\/07\/4-2.jpg\" alt=\"How Are Polyimide PCBs Manufactured?\" class=\"wp-image-10756\"\/><\/a><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Polyimide_PCB_Manufacturer_in_China_%E2%80%93_EBest_Circuit_Best_Technology\"><\/span>Polyimide PCB Manufacturer in China \u2013 EBest Circuit (Best Technology)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Reasons why choose us as <strong><a href=\"https:\/\/www.bestpcbs.com\/blog\/2025\/07\/polyimide-pcb-manufacturer-in-china-over-18-years\/\" title=\"\">polyimide PCB manufacturer<\/a><\/strong>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>24-hour rapid prototyping:<\/strong> shorten the R&amp;D cycle by 50% and accelerate product launch.<\/li>\n\n\n\n<li><strong>1 Piece MOQ: <\/strong>zero inventory risk, trial production cost reduced by 90%.<\/li>\n\n\n\n<li><strong>Competitive &amp; Transparent Pricing<\/strong> \u2013 No hidden costs, offering the best value without compromising quality.<\/li>\n\n\n\n<li><strong>Turnkey Solutions <\/strong>\u2013 Full-service PCB manufacturing from design to delivery, accelerating your product\u2019s time-to-market.<\/li>\n\n\n\n<li><strong>ISO 14001\/ISO 13485 certification:<\/strong> medical\/automotive customers are exempt from secondary testing, and compliance costs are reduced by 30%<\/li>\n\n\n\n<li><strong>0.075mm ultra-thin substrate processing<\/strong>: folding screen FPC thickness is reduced by 40%, and the bending life reaches 200,000 times.<\/li>\n\n\n\n<li><strong>Mature blind and buried via technology: <\/strong>circuit density increased by 40%, adapting to the needs of 5G modules\/medical implants.<\/li>\n\n\n\n<li><strong>Free DFM (Design for Manufacturability) Analysis: <\/strong>Optimizes PCB layouts to reduce material waste, lower production costs, and avoid late-stage design revisions.<\/li>\n<\/ul>\n\n\n\n<p>Please feel free to contact EBest Circuit (Best Technology) if you have any inquiry for polyimide PCB: <strong><a href=\"mailto:sales@bestpcbs.com\">sales@bestpcbs.com<\/a><\/strong>. Looking forward to hearing from you soon!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Why choose polyimide PCB?\u200c This guide details their critical properties, thickness, thermal conductivity, pros and cons, manufacturing processes and applications. Are you still troubled by these problems? EBest Circuit (Best Technology) \u4e28Polyimide PCB Manufacturer in China Over 18 years: Welcome to contact us if you have any request for polyimide PCB: sales@bestpcbs.com. What Is Polyimide [&hellip;]<\/p>\n","protected":false},"author":33247,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"footnotes":""},"categories":[175,174],"tags":[1795,1794],"class_list":["post-10746","post","type-post","status-publish","format-standard","hentry","category-best-pcb","category-bestpcb","tag-polyimide-flex-pcb","tag-polyimide-pcb"],"acf":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.bestpcbs.com\/blog\/wp-json\/wp\/v2\/posts\/10746","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bestpcbs.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bestpcbs.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bestpcbs.com\/blog\/wp-json\/wp\/v2\/users\/33247"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bestpcbs.com\/blog\/wp-json\/wp\/v2\/comments?post=10746"}],"version-history":[{"count":2,"href":"https:\/\/www.bestpcbs.com\/blog\/wp-json\/wp\/v2\/posts\/10746\/revisions"}],"predecessor-version":[{"id":10759,"href":"https:\/\/www.bestpcbs.com\/blog\/wp-json\/wp\/v2\/posts\/10746\/revisions\/10759"}],"wp:attachment":[{"href":"https:\/\/www.bestpcbs.com\/blog\/wp-json\/wp\/v2\/media?parent=10746"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bestpcbs.com\/blog\/wp-json\/wp\/v2\/categories?post=10746"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bestpcbs.com\/blog\/wp-json\/wp\/v2\/tags?post=10746"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}