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40μm No-Residue Cast Polyethylene Film with Uniform Thickness for Electronics Protection
40μm No-Residue Cast Polyethylene Film with Uniform Thickness for Electronics Protection
40μm No-Residue Cast Polyethylene Film with Uniform Thickness for Electronics Protection
40μm No-Residue Cast Polyethylene Film with Uniform Thickness for Electronics Protection
40μm No-Residue Cast Polyethylene Film with Uniform Thickness for Electronics Protection
40μm No-Residue Cast Polyethylene Film with Uniform Thickness for Electronics Protection
Specifications
Brand Name :
HSF
Model Number :
CPE40W
Place of Origin :
China
MOQ :
1000kg
Price :
N.A.
Payment Terms :
T/T
Supply Ability :
50 tons per day
Delivery Time :
10 working days
Packaging Details :
Export Standard
Material :
LDPE or Blended PE
Color :
White
Surface Finish :
double-sided glossy, one side matte one side glossy, or double-sided matte.
Thickness :
30μm~300μm
Web-Width :
Up to 2600mm
Description
Cast Polyethylene Film - 40μm Protective Film for Electronics
Our 40μm cast polyethylene film is engineered for electronics protection with no-residue performance, uniform thickness, excellent flexibility, and stable processing characteristics. This soft, smooth film delivers reliable protection for sensitive electronic components.
Manufacturing Process
The production of cast polyethylene film involves precise raw material proportioning, melt extrusion, casting, cooling and setting, traction and stretching, edge material recycling, corona treatment, and final winding and slitting to produce flat, uniform film products.
Key Product Features
  • Uniform thickness distribution for consistent performance
  • High transparency and smooth surface finish
  • Excellent heat sealability with wide temperature range
  • Low internal stress for superior dimensional stability
  • Good toughness and flexibility
  • No-residue formulation for electronics protection
  • Stable processing characteristics
Cast PE Film vs Blown PE Film Comparison
Comparison Dimension Cast Polyethylene Film Blown PE Film
Thickness Uniformity Advantage: Small thickness deviation (±5%) due to precise T-die extrusion control Disadvantage: Larger thickness deviation (±8-10%) affected by blowing process
Transparency & Flatness Advantage: High transparency (90%+) and smooth surface without wrinkles Disadvantage: Lower transparency with uneven, wrinkled surface
Internal Stress Advantage: Low internal stress with good dimensional stability Disadvantage: High internal stress causing warping and deformation
Heat-Sealing Performance Advantage: Excellent heat-sealing with stable strength and wide temperature range Disadvantage: Poor heat-sealing with unstable strength and narrow range
Post-Processing Adaptability Advantage: Good adaptability for corona treatment, printing and lamination Disadvantage: Relatively poor post-processing adaptability
Production Efficiency Advantage: High line speed (50-150m/min) with online edge material recycling Disadvantage: Lower line speed (20-50m/min) with higher material loss
Note: The above advantages and disadvantages are based on conventional production processes. With continuous technology upgrades, the performance gap between both film types is gradually narrowing in some aspects.

40μm No-Residue Cast Polyethylene Film with Uniform Thickness for Electronics Protection

40μm No-Residue Cast Polyethylene Film with Uniform Thickness for Electronics Protection

Physical Performance Standards & Test Results
Test Item Unit Industry Standard Our Standard Actual Result Qualification
Total Thickness μm 40±5 40±3 39.8 Qualified
Whiteness % ≥85 ≥88 89.1 Qualified
Opacity % ≥90 ≥92 93.0 Qualified
Tensile Strength MPa ≥16/≥14 ≥18/≥16 19.2/17.3 Qualified
Elongation at Break % ≥310/≥290 ≥330/≥310 341/322 Qualified
Heat Sealing Strength N/15mm ≥8.5 ≥10.5 11.3 Qualified
Surface Tension mN/m ≥36 ≥38 39.0 Qualified
Tear Resistance N ≥13/≥11 ≥14/≥12 14.8/12.9 Qualified
Moisture Barrier g/(m²*24h) ≤5.8 ≤5.4 5.2 Qualified
Oil Resistance - No swelling/discoloration No swelling/discoloration/adhesion No swelling/discoloration/adhesion Qualified
Hardness HD 50±5 50±3 49.8 Qualified
Weather Resistance - No fading/cracking Fading ≤2, no cracking/deformation Fading grade 1, no cracking/deformation Qualified
Environmental Performance - GB 4806.7-2016 No odor, no harmful precipitation No odor, no harmful precipitation Qualified
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40μm No-Residue Cast Polyethylene Film with Uniform Thickness for Electronics Protection

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Product Detail
Brand Name :
HSF
Model Number :
CPE40W
Place of Origin :
China
MOQ :
1000kg
Price :
N.A.
Payment Terms :
T/T
Contact Supplier
40μm No-Residue Cast Polyethylene Film with Uniform Thickness for Electronics Protection
40μm No-Residue Cast Polyethylene Film with Uniform Thickness for Electronics Protection
40μm No-Residue Cast Polyethylene Film with Uniform Thickness for Electronics Protection

Shanghai HSF Materials Technology Co., Ltd.

Verified Supplier
3 Years
shanghai, shanghai
Since 2016
Business Type :
Manufacturer, Exporter
Main Products :
High Density Polyethylene Film, 2.4G Video Talking Pen, Low Density Polyethylene Film
Total Annual :
1500-2000000
Employee Number :
80~100
Certification Level :
Verified Supplier
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