Among modern flexible packaging materials, cast polyethylene (CPE) has become an ideal choice for food, daily chemicals, medical and other fields due to its excellent transparency, flexibility and heat sealing performance. As a professional supplier of functional masterbatch and film materials, Standard Polymer provides you with stable and reliable CPE solutions to help high-end packaging achieve higher standards.
Cast polyethylene is a polyethylene film produced by the cast film extrusion process. 
Unlike traditional blown film, CPE film is quickly shaped by high-speed cooling rollers, with higher surface smoothness and smaller thickness error. It is often used in multi-layer co-extrusion packaging structures with high transparency and high flexibility requirements.
At Standard Polymer, we select high-quality LLDPE, LDPE and functional additives to ensure that the cast film has good heat sealing performance, puncture resistance and processability.
Key Properties | Description |
High Transparency | Greatly enhances the visual appeal of packaging; ideal for food packaging where product visibility is essential. |
Excellent Thickness Uniformity | Precise thickness control during cast production ensures consistent film quality. |
Superior Softness | Provides a smooth touch and excellent conformability; suitable for skin-contact and automated packaging. |
Wide Heat-Seal Range | Offers strong, low-temperature seals compatible with various packaging machines. |
Good Lamination Compatibility | Can be laminated or heat-sealed with CPP, PET, PA, AL, and other materials. |
Custom Functional Additives | Can be enhanced with anti-fog, anti-static, slip agents, and other masterbatches for improved functionality. |
Standard Polymer provides support for processing of incoming materials, customized formulas, and masterbatch/functional masterbatch matching to ensure that each roll of CPE film meets specific process requirements
CPE film is widely used in the packaging industry, covering daily consumer goods and industrial fields:
Area | Typical Example |
Food Packaging | Outer protective layers for frozen foods, fresh meat, fruits, vegetables, and ready-to-eat meals, typically as part of multi-layer co-extruded structures. |
Medical Packaging | For sterile dressing pouches, disposable surgical kits, etc. |
Personal Care Packaging | Such as refill pouches for detergents and flexible cosmetic packaging. |
Industrial Lamination Films | As a middle layer in aluminum-plastic or paper-plastic laminates. |
Agricultural Films | Used as surface layers in greenhouse coverings. |
| Feature | CPE Film | Blown Film (e.g., LDPE/LLDPE) |
| Film Formation | Chill-roll casting | Air or water-cooled blowing |
| Surface Smoothness | Very high | Relatively lower |
| Transparency | Higher | Slightly lower |
| Thickness Tolerance | Low | Relatively higher |
| Cost | Slightly higher | Relatively lower |
| Production Speed | High | Moderate |
As a professional provider of polyolefin functional masterbatch and composite materials, 
Standard Polymer has the following core advantages:
16 Years of industry experience, mature and stable formula
Complete experimental equipment, support sample matching and on-site color matching
Can collaborate with customers to research and create high-end packaging film structures
Whether it is transparency, sealing, or flexibility, Standard Polymer can provide you with CPE material solutions with reliable performance, flexible specifications, and compliance with international environmental standards.
Welcome to contact Standard Polymer, we will provide you with professional material selection suggestions, sample support and customization services.
