Detailed introduction to SMT splicing tape
1. Overview of splicing tape
Splicing tape is an auxiliary material used to connect the tape reel during the SMT (surface mount technology) production process. It is mainly used to quickly connect the next roll of tape when the material is exhausted, ensuring production continuity, reducing downtime, and improving production efficiency.
2. Classification of splicing tape
(1) Classification by material
PET (polyester film) splicing tape: high temperature resistance, high tensile strength, suitable for high-speed placement machines.
PI (polyimide) splicing tape: excellent high temperature resistance, suitable for high-temperature welding processes (such as lead-free welding).
(2) Classification by viscosity
Ordinary adhesive splicing tape: suitable for general SMT production environments.
High adhesive splicing tape: suitable for high-speed placement machines or equipment with large vibrations to prevent the tape from falling off.
Low-temperature adhesive splicing tape: suitable for temperature-sensitive materials to prevent high temperature from affecting component performance.
(3) Classification by color
Transparent splice tape: easy to observe the splice position, suitable for precision components.
Colored splice tape: different colors can be used to distinguish different materials or process requirements.
3. Application scenarios of splice tape
SMT placement machine: Splice materials on tapes of different widths such as 8mm, 12mm, and 16mm.
When the tape material is exhausted: quickly connect a new material tray to reduce downtime.
Special component splicing: Precision components such as IC, QFN, BGA, etc. require high-precision splice tape.
4. How to Use Splice Tape
Cut to the appropriate length: Generally, it should be slightly longer than the tape width (e.g., 15mm splice tape can be used for 12mm tape).
Align the tape: Ensure the holes on the new and old tapes are aligned to prevent misalignment during feeding.
Apply the splice tape: Apply it evenly, avoiding bubbles or wrinkles.
Check for secureness: Gently pull to ensure the splice tape is firmly adhered.
Feed into the SMT machine: Ensure smooth feeding and no jamming.
5. Key Points for Choosing Splice Tape
Match the tape width (8mm/12mm/16mm/24mm, etc.).
Temperature resistance must meet process requirements (e.g., lead-free soldering requires high-temperature-resistant splice tape).
Adhesion should be moderate, avoiding overly sticky (difficult to tear) or too loose (easy to fall off).
Brand and Quality: Choose a reputable brand (such as 3M, Nitto, Tesa, etc.) to ensure reliability.
6. Common Problems and Solutions
Problem Possible Cause Solution
Splice tape is peeling. Insufficient adhesion or failure at high temperatures. Replace with high-temperature-resistant, high-adhesion splice tape.
Poor material feeding. Splice tape is too thick or misaligned. Use ultra-thin splice tape to ensure hole alignment.
Residual adhesive. Low-quality splice tape. Choose high-quality splice tape with no adhesive residue.
7. Conclusion
Although splice tape is a small component, it is crucial to the continuity and efficiency of SMT production. Choosing the right splice tape can reduce downtime and improve yield, making it an essential detail in the SMT process. In the future, with the advancement of automation and intelligent technology, splice tape will become even more efficient, environmentally friendly, and intelligent.
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