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Strict Craft Makes Perfect PI Tape | From Raw Material To Finished Product
This brown Polyimide (PI) high-temperature tape is professionally designed for high-precision industrial manufacturing scenarios, including SMT reflow soldering, lithium battery insulation, electroplating and anodizing shielding. Every design and production step is optimized to solve common industry pain points such as high-temperature warping, glue residue, glue penetration and insulation failure.
Jul 15th,2026
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Brown PI Tape Product Design & Production Process
1. Pain Points & Targeted Solutions for PCB & SMT Industry PCB/SMT
Pain 1
Conventional tapes cannot withstand 260℃ reflow temperature, leaving heavy glue residue. Workers spend extra time wiping gold fingers with alcohol, which easily scratches delicate circuits.
Solution
Modified silicone adhesive formula withstands long-term 260℃ working temperature. It peels off completely without residue after high-temperature processing, eliminating secondary cleaning procedures and saving labor costs.
Pain 2
Ordinary film shrinks and warps when heated, shifting masking areas and contaminating gold fingers with solder, resulting in full PCB scrapping.
Solution
High-purity PI film features ultra-low thermal shrinkage. Multi-stage curing locks adhesive layer firmly; no bubbling or edge lifting under sharp temperature changes, maintaining neat masking edges.
Pain 3
Transparent tapes transmit UV light, damaging precision circuits during exposure and causing open circuit defects.
Solution
Natural amber brown shading blocks strong light and UV rays, achieving masking & light shielding protection in one single product.
2. Pain Points & Targeted Solutions For Lithium Battery Industry
Pain 1
Ordinary tapes fail to resist battery electrolyte, losing insulation during cell baking and laser welding, bringing hidden risks of short circuit and ignition.
Solution
PI film resists acid, alkali and lithium electrolyte, with insulation voltage above 3KV. It isolates conductive metal tabs to prevent short-circuit hazards.
Pain 2
Bright transparent tape accelerates aging of battery core materials under light exposure, shortening finished product service life.
Solution
Brown light-proof structure slows oxidation of internal battery materials, stabilizing battery performance for long-term storage.
3. Pain Points & Targeted Solutions For Electroplating & Anodizing Industry
Pain
Cheap masking tapes get corroded by strong acid & alkali plating liquid, edge peeling causes uneven coating and defective workpieces with high scrap rate.
Solution
Chemically inert PI material resists all kinds of plating solvents and acid-base liquid. No edge warping under high baking temperature, uniform coating without leakage.
About Amber Brown Polyimide Masking Tape
To solve the above industry pain points, we strictly control every production link as below.
1. Customized Demand & Structural Design
According to different working temperature, insulation and shielding requirements of electronic and new energy industries, we carry out targeted structural design:
• High temperature resistance structure: Adapt to long-term working temperature from -73℃ to 260℃, and instantaneous temperature up to 300℃, no melting or edge lifting during soldering and baking.
• Residue-free glue formula: Imported modified silicone adhesive formula ensures clean peeling after high-temperature processing without leaving residue on PCB, metal and battery surfaces.
• Insulation & shading dual function: Amber brown PI film provides excellent light-shielding effect and stable insulation performance to prevent short circuit and current leakage.
• Low stretch structural design: Optimized film tension ensures no deformation during automatic die-cutting and machine lamination.
2. Strict Raw Material Selection
We adopt high-purity original PI film and high-temperature silicone glue from qualified suppliers to guarantee stable batch performance:
• PI film: Uniform thickness, no crystal points, no scratches, excellent high-temperature stability and tensile strength.
• Silicone adhesive: Aging-resistant, solvent-resistant and electrolyte-resistant, no glue flow under high heat.
3. Dust-free Precision Coating Process
All coating procedures are completed in a dust-free workshop:
• Quantitative automatic coating controls glue thickness evenly with tiny tolerance.
• Multi-section gradient temperature curing locks molecular structure completely, improving adhesion and high-temperature resistance.
5. Precision Rewinding & Slitting
• Intelligent tension rewinding ensures uniform roll tightness without wrinkles or deviation.
• High-precision slitting makes smooth edge without burrs, suitable for precision die-cutting.
• Custom width and length slitting service supports sample order and mass production.
6. Full Batch Quality Inspection System
Every batch will pass strict testing before delivery:
1. High temperature baking test
2. Residue-free peeling test
3. Insulation voltage test
4. Tensile strength test
5. Adhesion stability test
6. Appearance and size inspection
7. Stable Supply & Custom Solution
We support OEM, custom logo printing, custom size and packaging. With sufficient stock and fast shipment, we provide one-stop high-temperature shielding and insulation solutions for global industrial manufacturers
