{"id":1147,"date":"2026-08-09T04:57:05","date_gmt":"2026-08-09T04:57:05","guid":{"rendered":"https:\/\/hnjenten.com\/?p=1147"},"modified":"2026-08-09T05:11:52","modified_gmt":"2026-08-09T05:11:52","slug":"carrier-tape-forming-process-step-by-step-overview","status":"publish","type":"post","link":"https:\/\/jinyingteng.com\/id\/carrier-tape-forming-process-step-by-step-overview\/","title":{"rendered":"Proses Pembentukan Pita Pembawa: Gambaran Umum Langkah demi Langkah"},"content":{"rendered":"\n
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A comprehensive guide to understanding how precision carrier tapes are manufactured for the semiconductor and SMT industries<\/strong><\/p>\n\n\n\n

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Introduction<\/h2>\n\n\n\n

Carrier tape \u2014 the backbone of modern surface-mount technology (SMT) component packaging \u2014 is a precision-engineered thermoplastic strip that holds electronic components during storage, shipping, and automated assembly. Whether you are manufacturing semiconductors, LEDs, or passive components, the quality of your carrier tape directly impacts placement efficiency, component protection, and yield rates.<\/p>\n\n\n\n

At Jenten, we have spent years refining the carrier tape forming process. This step-by-step overview walks you through the complete manufacturing workflow \u2014 from raw material preparation to finished reel \u2014 explaining the critical parameters that determine tape quality, dimensional accuracy, and production efficiency.<\/p>\n\n\n\n

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Step 1: Raw Material Selection and Preparation<\/h2>\n\n\n\n

Material Selection: PC vs. PS vs. PET<\/h3>\n\n\n\n

The carrier tape forming process begins with selecting the appropriate thermoplastic material. The most common materials are:<\/p>\n\n\n\n

Material<\/th>Properties<\/th>Typical Applications<\/th><\/tr><\/thead>
Polycarbonate (PC)<\/strong><\/td>High impact strength, excellent dimensional stability, transparent<\/td>High-reliability components, optical devices, automotive electronics<\/td><\/tr>
Polystyrene (PS)<\/strong><\/td>Cost-effective, good formability, available in conductive grades<\/td>Consumer electronics, general-purpose SMT components<\/td><\/tr>
PET (Polyethylene Terephthalate)<\/strong><\/td>Good heat resistance, dimensional stability<\/td>High-temperature applications, specialized packaging<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Many manufacturers use multi-layer tapes<\/strong> \u2014 for example, conductive PS outer layers combined with a transparent PC core. This structure provides both ESD protection and mechanical strength while optimizing material costs .<\/p>\n\n\n\n

Raw Material Drying<\/h3>\n\n\n\n

Thermoplastic materials are hygroscopic \u2014 they absorb moisture from the air. Even small amounts of moisture can cause severe defects during forming, including:<\/p>\n\n\n\n

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  • Surface bubbles and voids<\/li>\n\n\n\n
  • Poor pocket definition<\/li>\n\n\n\n
  • Inconsistent shrinkage<\/li>\n\n\n\n
  • Reduced impact strength<\/li>\n<\/ul>\n\n\n\n

    Proper drying is therefore critical<\/strong>. Materials are typically dried in industrial ovens at temperatures specified by the material supplier, often 70\u00b0C to 130\u00b0C depending on the resin type, until moisture content falls below 0.02%. At Jenten, our integrated forming systems include a pre-heating chamber that maintains material dryness throughout the production process, preventing moisture reabsorption in humid environments.<\/p>\n\n\n\n

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    Step 2: Extrusion or Sheet Feeding<\/h2>\n\n\n\n

    Depending on the machine configuration, the process follows one of two paths:<\/p>\n\n\n\n

    Extrusion-Type Forming (Pellet to Tape)<\/h3>\n\n\n\n

    In this configuration, plastic pellets are fed directly into an extruder, melted, and formed into a continuous sheet of precise thickness . This “pellet-to-tape” approach offers several advantages:<\/p>\n\n\n\n

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    • Cost efficiency<\/strong> \u2014 Eliminates the intermediate sheet purchasing step<\/li>\n\n\n\n
    • Material control<\/strong> \u2014 You control the exact formulation and color<\/li>\n\n\n\n
    • Multi-layer capability<\/strong> \u2014 Co-extrusion allows simultaneous production of 3-layer tapes<\/li>\n<\/ul>\n\n\n\n

      The extruded sheet passes through a series of calibration rollers to achieve uniform thickness before entering the forming station.<\/p>\n\n\n\n

      Sheet-Fed Forming (Pre-extruded Tape)<\/h3>\n\n\n\n

      Alternatively, pre-extruded tapes (already slit to the required width) are fed directly into the forming machine. This approach is common for smaller production runs or when working with specialized materials that require different processing conditions.<\/p>\n\n\n\n

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      Step 3: Preheating<\/h2>\n\n\n\n

      Before forming, the tape must be heated to its softening temperature \u2014 the point at which the material becomes pliable enough to take the pocket shape without cracking, yet not so hot that it flows uncontrollably.<\/p>\n\n\n\n

      A typical preheating profile:<\/p>\n\n\n\n

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      • Preheater:<\/strong> Gradually raises temperature to 70-80\u00b0C<\/li>\n\n\n\n
      • Main heater:<\/strong> Brings the tape to softening temperature (typically 130-200\u00b0C depending on material)<\/li>\n<\/ul>\n\n\n\n

        The preheating step serves multiple purposes:<\/p>\n\n\n\n

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        1. Moisture removal<\/strong> \u2014 Eliminates any residual surface moisture<\/li>\n\n\n\n
        2. Temperature stabilization<\/strong> \u2014 Ensures uniform heat distribution<\/li>\n\n\n\n
        3. Process control<\/strong> \u2014 Allows precise adjustment of forming temperature for different materials and thicknesses<\/li>\n<\/ol>\n\n\n\n

          At Jenten, our forming systems employ independent hot air blowers<\/strong> (up to 4400W) with adjustable temperature and airflow, giving operators fine-grained control over the thermal profile.<\/p>\n\n\n\n

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          Step 4: Pocket Forming<\/h2>\n\n\n\n

          This is the heart of the carrier tape manufacturing process. The heated tape is pressed into a series of pockets (cavities) that will hold individual electronic components.<\/p>\n\n\n\n

          Two Primary Forming Methods<\/h3>\n\n\n\n
          Method<\/th>Mechanism<\/th>Key Characteristics<\/th><\/tr><\/thead>
          Roller-Type (Rotary)<\/strong><\/td>Tape passes over a rotating drum with convex molds mounted on the circumference<\/td>Continuous high-speed production, ideal for 1-to-4 and 1-to-6 configurations, excellent consistency<\/td><\/tr>
          Flat-Plate (Intermittent)<\/strong><\/td>Tape is pressed between heated flat plates with concave cavities<\/td>Suitable for deeper pockets and thicker materials, lower production speed<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

          The Roller-Type Forming Process<\/h3>\n\n\n\n

          In roller-type forming, molds (male or convex shape) are mounted at equal intervals around a rotating drum . As the heated tape passes over the drum:<\/p>\n\n\n\n

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          1. The tape begins to drape over the convex molds<\/li>\n\n\n\n
          2. A hold-down roller presses the tape against the molds<\/li>\n\n\n\n
          3. Vacuum suction applied through slits at the roots of the molds draws the tape into complete contact with the mold surface<\/li>\n\n\n\n
          4. The tape takes the shape of the pocket cavity<\/li>\n<\/ol>\n\n\n\n

            Vacuum pressure<\/strong> is critical here. Insufficient vacuum results in incomplete pocket formation; excessive vacuum can cause material thinning. For 1-to-6 production, maintaining consistent vacuum across all six lanes requires precision engineering.<\/p>\n\n\n\n

            Cooling and Demolding<\/h3>\n\n\n\n

            After forming, the tape must be cooled before it can be removed from the molds. Cooling is typically achieved by spraying coolant (often air mixed with water mist) onto the formed tape while it remains on the mold .<\/p>\n\n\n\n

            A critical advantage of convex (male) molds:<\/strong> As the tape cools, it shrinks. With concave molds, this shrinkage can cause the pocket to deform as it contracts away from the mold surface. With convex molds, the tape is pressed onto<\/em> the mold, and the shrinkage is constrained \u2014 preventing deformation .<\/p>\n\n\n\n

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            Step 5: Precision Punching<\/h2>\n\n\n\n

            After pocket forming, the tape moves to the punching station. Here, sprocket holes (index holes) are created along both edges of the tape. These holes engage with the sprocket wheels of automated SMT placement machines, ensuring accurate positioning during component pick-up.<\/p>\n\n\n\n

            Critical Punching Parameters<\/h3>\n\n\n\n

            Parameter<\/strong> | Requirement<\/strong> | Impact<\/strong>
            P2 pitch accuracy | \u00b10.03mm or better | Ensures smooth feeding through SMT machines
            Hole diameter | Down to 0.2mm | Enables narrow tape widths and high-density packaging
            Burr control | Minimal to zero burr | Prevents dust generation and feeder jams<\/p>\n\n\n\n

            To achieve \u00b10.03mm pitch accuracy, advanced systems employ:<\/p>\n\n\n\n

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            • Independent servo motor control<\/strong> (0.75KW) for precise punching timing<\/li>\n\n\n\n
            • In-die precision positioning<\/strong> using guide pins<\/li>\n\n\n\n
            • High-speed precision dies<\/strong> manufactured with slow-wire EDM (8 guide bushes, 4 guide posts)<\/li>\n<\/ul>\n\n\n\n

              Quality punch dies also feature quick-change mechanisms<\/strong> allowing die replacement in under one minute \u2014 a significant efficiency advantage for production environments requiring frequent changeovers.<\/p>\n\n\n\n

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              Step 6: Slitting<\/h2>\n\n\n\n

              For multi-lane production (1-to-4 or 1-to-6 configurations), the wide tape must be slit into individual carrier tape lanes. The slitting unit uses circular blades to make precise cuts between lanes.<\/p>\n\n\n\n

              Key Slitting Considerations<\/h3>\n\n\n\n
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              • Blade material:<\/strong> Tungsten carbide (WC) or high-speed steel for wear resistance<\/li>\n\n\n\n
              • Blade overlap\/gap:<\/strong> Adjustable to accommodate different material types and thicknesses<\/li>\n\n\n\n
              • Burr-free cutting:<\/strong> Proper blade geometry and alignment prevent edge burrs that could damage components or feeder equipment<\/li>\n<\/ul>\n\n\n\n

                At Jenten, our slitting units feature independent step motor control<\/strong> and adjustable blade overlap \u2014 ensuring clean cuts for any material from 0.1mm to 0.4mm thickness .<\/p>\n\n\n\n

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                Step 7: Quality Inspection and Cleaning<\/h2>\n\n\n\n

                Quality inspection is not an afterthought \u2014 it is integral to the process. Leading manufacturers incorporate Automatic Optical Inspection (AOI)<\/strong> directly into the production line.<\/p>\n\n\n\n

                Visual Inspection Capabilities<\/h3>\n\n\n\n

                Resolution<\/strong> | 5 Megapixel (Standard)<\/strong> | 10 Megapixel (Optional)<\/strong>
                Detection targets | Dimensional variations, surface scratches, contamination, burrs | Same defects with higher precision
                Output | Real-time dimensional curves, CPK statistics, defect classification | Enhanced resolution for micro-defect detection<\/p>\n\n\n\n

                Defect images are automatically categorized and stored for:<\/p>\n\n\n\n