China pet film production companies, polyester film manufacturer-Yuxing Film

Reflector Base Film

CY51 Reflective Polyester Film

CY51 is a white BOPET polyester film with high optical reflectivity. It also features low glossiness, low density, and good thermal stability, and is mainly used in LCD backlight modules.

White BOPET

Low glossiness

Reflective film

High reflectivity

LCD backlight module

Product Model:

CY51

Key Highlights

High optical reflectivity

Typical reflectivity is 96% at 550nm and across 400-700nm.

Suitable for LCD backlight modules

The TDS identifies CY51 as mainly used in LCD backlight modules.

Low glossiness and low density

Low glossiness (20-25 GU) and low density (0.85 g/cm³) for efficient optical performance.

Good thermal stability

Provides good thermal stability and low dimensional change performance.

Technology & Advantages

Reflective films in LCD backlight modules typically require high reflectivity, low transmittance, suitable haze, and dimensional stability to improve light utilization and support module structure stability. As a white BOPET reflective polyester film, CY51 can be used as a reflective material in LCD backlight modules.

Core Values

Optical efficiency:
High reflectivity (96% at 550nm and across 400-700nm) supports light utilization and enhances brightness in LCD backlight modules.

Structural stability:
Good thermal stability and low dimensional change at 85°C ensure reliable module performance and long-term durability.

Lightweight potential:
Low density (0.85 g/cm³) supports lightweight backlight material requirements, helping reduce overall module weight.

Applications

LCD backlight module

Used as reflective material in LCD backlight modules.

Reflective film

Suitable for optical film structures requiring high reflectivity and low transmittance.

Technical Specifications

Properties	Unit	Standard	Typical Value
Thickness	μm	GB/T 13542.2-2021	150 / 188 / 225
Tensile Strength - MD	MPa	GB/T 13542.2-2021	90 / 90 / 100
Tensile Strength - TD	MPa	GB/T 13542.2-2021	80 / 80 / 90
Elongation at Break - MD	%	GB/T 13542.2-2021	60 / 60 / 70
Elongation at Break - TD	%	GB/T 13542.2-2021	40 / 40 / 50
Dimensional Stability @85°C, 30min - MD	%	GB/T 13542.2-2021	0.15 / 0.15 / 0.15
Dimensional Stability @85°C, 30min - TD	%	GB/T 13542.2-2021	0 / 0 / 0
Density	g/cm3	TDS	0.85 / 0.85 / 0.85
Transmittance	%	ASTM D1003	3.0 / 2.5 / 2.0
Haze	%	ASTM D1003	90 / 90 / 90
Reflectivity @550nm	%	Spectrophotometry	96 / 96 / 96
Reflectivity @400-700nm	%	Spectrophotometry	96 / 96 / 96
60° Surface gloss 60° Surface Glossiness	GU	GB/T 8807-1988	20 / 25 / 20
Corona Treatment	mN/m	GB/T 14216-2008	52 / 52 / 52

Remark: The table shows typical performance values of CY51 polyester film. Properties such as density and glossiness can be customized according to customer requirements.