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25μm Polyimide Film for Flexible Insulation - Biaxially Stretched

25μm Polyimide Film for Flexible Insulation - Biaxially Stretched

Brand Name: Guofeng
Model Number: PI2
MOQ: 1 ton
Price: 1.0-2.0 USD/KG
Payment Terms: T/T,L/C,D/P,D/A,Western Union,MoneyGram
Supply Ability: 180000 TON/YEAR
Detail Information
Place of Origin:
HEFEI, CHINA
Certification:
ISO9001, ISO14001, ISO45001, QS production license and ISO/TS16949 UK DAKKS
Material:
Polyimide
Thickness:
25μm
Width:
Customized
Length:
Customized
Package:
Simple/vertical/suspend/horizontal
Tensile Strength:
≥200 MPa
Dielectric Strength:
≥150 KV/mm
Volume Resistivity:
≥1×10¹⁶ Ω·cm
Moisture Absorption:
<1.0% (24hrs)
Dimensional Stability:
≤0.1% Shrinkage @ 200°C
Packaging Details:
Pallet
Supply Ability:
180000 TON/YEAR
Highlight:

25μm polyimide insulation film

,

biaxially stretched polyimide film

,

flexible polyimide film insulation

Product Description


GL General-Type Polyimide Yellow Film – Biaxially Stretched Standard PI Film For Flexible Insulation

 
 

Product Overview

 
Our GL General-Type Polyimide Yellow Film is a biaxially stretched, naturally amber-colored polyimide film designed for high-temperature insulation, adhesive tapes, and flexible circuit coverlays. Available in two optimized thicknesses (25μm & 50μm), it balances mechanical strength, thermal stability, and electrical properties—making it a versatile choice for electronics, aerospace, and industrial applications.


Key Features


✔ Biaxial Orientation – Uniform MD/TD strength (3:1 stretch ratio)
✔ Thermal Class H (180°C continuous)– Withstands soldering and reflow
✔ Natural Yellow Hue (No dyes)  – UV-resistant, no color migration
✔ High Dielectric Strength– Reliable insulation for thin layers
✔ Adhesion-Ready Surface – Corona-treated (50-52 dynes/cm)


Applications

  • FPC Coverlays  –  Flexible circuit insulation

  • High-Temp Tapes – Masking, splicing, and EMI shielding

  • Motor/Transformer Insulation – Anode current collectors

  • Heater Elements – Backing for flexible heaters

  • Printed Electronics – Substrate for conductive inks



Technical Specifications




Property

Value

Material

Polyimide

Application

FPC Coverlays

Thickness Range

25μm

Width

Customizable (e.g., 500mm - 1500mm)

Elongation at Break

MD 70-90%
TD 60-80%

Tensile Strength (MD)

≥250

Tensile Strength (TD)

≥80

Dielectric Strength

≥ 150kV/mm




Why Choose Our Film?

  • Proven Reliability – IPC-4203/1 compliant for rigid-flex PCBs

  • Process Flexibility – Compatible with laser cutting, die punching, and adhesive lamination

  • Cost-Effective – Standard-grade performance without specialty additives

  • Traceable Supply – Full resin batch documentation




Product pictures


25μm Polyimide Film for Flexible Insulation - Biaxially Stretched 025μm Polyimide Film for Flexible Insulation - Biaxially Stretched 1



Handling & Storage Instructions


To ensure the longevity and performance of our BOPP film, please adhere to the following guidelines:


  • Shelf Life: 6 months from the date of manufacture.
  • Storage Conditions:Store in a cool, dry place away from direct sunlight and moisture.
  • Temperature Range: 10°C - 30°C.
  • Humidity: Keep below 60% relative humidity.
  • Handling: Avoid folding or creasing the film to prevent damage.


Order Now!

Standard Formats:


 Roll Dimensions: 500mm/1,000mm width x 100-300m length
 Core ID: 3" / 6" (industrial cores)


Special Services:
 Pre-carbonized films (pre-baked at 600°C)
 Custom imidization degrees (for controlled carbonization speed

 MOQ: 200kg (sample rolls available)

Request our Graphitization Process Guide with temperature profiles for different end uses!