70μm White CPE Film
High-quality 70μm white CPE film featuring uniform thickness, pure white color, smooth surface, non-toxic properties, and odorless characteristics. Ideal for flexible packaging, lamination, and industrial & daily chemical packaging applications.
Manufacturing Process
Our 70μm white CPE (Cast Polyethylene) film is manufactured through precision cast extrusion. High-purity PE resins, food-grade white color masterbatch, and eco-friendly additives are blended in high-efficiency mixers. The compound undergoes single-screw extrusion with controlled temperature conditions (165-185℃), followed by precision flat die extrusion, instant cooling via chrome-plated chill rolls, and strict quality inspection before final packaging.
Product Features
- Stable physical properties with thickness controlled within 70μm ±2μm
- Even, pure white appearance without color deviation, bubbles, or surface defects
- Smooth, flat surface with excellent flexibility and superior toughness
- Resists tearing and puncturing with non-toxic, tasteless properties
- Compliant with international food contact safety standards
- Excellent heat sealability and compatibility for secondary processing
Competitive Advantages
- Advanced cast extrusion technology ensures ultra-uniform thickness and product consistency
- Low heat seal temperature with strong seal strength reduces packaging costs
- Lightweight yet durable with excellent moisture barrier and corrosion resistance
- Cost-effective solution customizable in width, roll length, and surface finish
- Superior dimensional accuracy compared to blown film alternatives
Application Fields
- Flexible packaging for food (snack bags, frozen food wrappers, candy packaging)
- Daily chemical packaging (toilet paper rolls, detergent bags)
- Industrial packaging (small components, electronic parts)
- Lamination base film for composite packaging
- Sanitary product packaging (sanitary napkins, diapers)
- Agricultural packaging (seed bags, fertilizer packaging)
Physical Properties & Performance Specifications
| Test Item |
Unit |
Industry Standard Requirement |
Our Product Standard |
Actual Test Result |
Qualification |
| Total Thickness of Base Film |
μm |
70±5 |
70±3 |
69.7 (LDPE 24.9/LLDPE 44.8) |
Qualified |
| Whiteness |
% |
≥85 |
≥88 |
89.7 |
Qualified |
| Opacity |
% |
≥90 |
≥92 |
93.5 |
Qualified |
| Tensile Strength (Longitudinal/Transverse) |
MPa |
≥19/≥17 |
≥21/≥19 |
22.1/20.2 |
Qualified |
| Elongation at Break (Longitudinal/Transverse) |
% |
≥340/≥320 |
≥360/≥340 |
368/349 |
Qualified |
| Heat Sealing Strength (120℃, 0.3MPa, 1s) |
N/15mm |
≥10 |
≥12 |
13.2 |
Qualified |
| Surface Tension (Corona Treated Surface) |
mN/m |
≥36 |
≥38 |
39.7 |
Qualified |
| Tear Resistance (Longitudinal/Transverse) |
N |
≥16/≥14 |
≥17/≥15 |
17.5/15.6 |
Qualified |
| Moisture Barrier Performance (23℃, 85%RH) |
g/(m²*24h) |
≤5.8 |
≤5.0 |
4.8 |
Qualified |
| Oil Resistance (Soaked in n-hexane for 24h) |
- |
No obvious swelling or discoloration |
No swelling, no discoloration, no adhesion |
No swelling, no discoloration, no adhesion |
Qualified |
| Hardness (Shore D) |
HD |
53±5 |
53±3 |
52.6 |
Qualified |
| Weather Resistance (UV Aging for 72h) |
- |
No obvious fading or cracking |
Fading grade ≤2, no cracking, no deformation, whiteness change ≤3% |
Fading grade 1, no cracking, no deformation, whiteness change 1.8% |
Qualified |
| Environmental Protection Performance |
- |
Complies with GB 4806.7-2016 |
Complies with GB 4806.7-2016, no peculiar smell, no harmful precipitation |
Complies with GB 4806.7-2016, no peculiar smell, no harmful precipitation |
Qualified |