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

Diffusion Base Film

CY20 Clear optical PET film

Transparent polyester film, high light transmittance, low haze, clean surface no defects, excellent electrical insulation properties. Mainly used as base film for LED back light source and nameplate. Standard thickness: 100μm, 125μm, 150μm, 188μm and 250um. Other thickness can be customized according to customer's specific requirement.

Optical base film

Transparent PET

Photoelectric display

High transmittance

Low haze

Product Model:

CY20

Key Highlights

High light transmittance, low haze

High transmittance (88.4-89.2%) and low haze (2.2-3.2%) ensure superior optical clarity for display applications.

Clean surface no defects

Defect-free surface with excellent appearance quality meets stringent optical and electronic material requirements.

Technology & Advantages

A high-clarity transparent PET film engineered for high light transmittance, low haze, and a clean, defect-free surface appearance. It also provides excellent electrical insulation properties, making it suitable as a functional base film for LED backlight source materials, nameplates, and related optical/electronic applications.

Core Values

Core performance:
High light transmittance (88.4-89.2%) and low haze (2.2-3.2%) ensure superior optical clarity. Clean, defect-free surface and excellent electrical insulation provide reliable performance for LED backlight and nameplate applications.

Processing adaptability:
Suitable for common lamination and coating processes. Supports slitting, die-cutting, and other converting operations with stable mechanical properties. Compatible with standard manufacturing equipment for efficient production.

Applications

Applications listed in TDS

Transparent polyester film, high light transmittance, low haze, clean surface no defects, excellent electrical insulation properties. Mainly used as base film for LED back light source and nameplate.

LED

LED back light source

Technical Specifications

Item	Item	Unit	Index	Index	Test method
Thickness	Thickness	μm	50	75	GB/T 13542.2-2021
Tensile strength	MD	MPa	168	155	GB/T 13542.2-2021
Tensile strength	TD	MPa	195	171	GB/T 13542.2-2021
Elongation at break	MD	%	108	106	GB/T 13542.2-2021
Elongation at break	TD	%	109	92	GB/T 13542.2-2021
Heat shrinkage (150℃, 30min)	MD	%	1.3	1.3	GB/T 13542.2-2021
Heat shrinkage (150℃, 30min)	TD	%	0.6	0.6	GB/T 13542.2-2021
PCT test Elongation at break	TD	%	58	76	121℃, 100%RH, 2atm, 60h
PCT test Elongation at break	MD	%	55	61	121℃, 100%RH, 2atm, 60h
60° / Glossiness	60° / Glossiness	GU	85	90	Gloss meter
UV Yellowing-300kWh/m2	UV Yellowing-300kWh/m2	/	1.6	1.6	IEC 61215
(280–400 nm) / UV isolation rate	(280–400 nm) / UV isolation rate	%	99.5	99.6	Ultraviolet spectrophotometry
(400–1000 nm) / Transmittance	(400–1000 nm) / Transmittance	%	16	16	Ultraviolet spectrophotometry
Breakdown voltage(In air)	Breakdown voltage(In air)	kV	6	9	GB/T 1408.1-2016
Note: ① MD = Machine Direction; TD = Transverse Direction. / ② The PCT test is a type test; other items are factory acceptance tests. / ③ The values above are typical values, not guaranteed values.

Remark: The parameter table is from the original TDS. MD refers to machine direction and TD refers to transverse direction; inspection type and typical value notes follow the original TDS.

Packaging & Logistics

Storage Conditions

Store the product in a clean, dry, and ventilated place.

Storage Environment

Keep away from fire, heating sources, and direct sunlight.

Pallet

Fumigation-free wooden pallets suitable for export transportation.

Label Information

Each roll label includes model, batch number, thickness, width, net weight, and production date for traceability.

Slitting Range

Different slit widths can be supplied according to customer laminating equipment and production requirements.

Supply Note

Regular specifications support batch supply. Lead time depends on order specifications, quantity, and production schedule.

Frequently Asked Questions

Q: What is CY20 mainly used for?

A: Transparent polyester film, high light transmittance, low haze, clean surface no defects, excellent electrical insulation properties. Mainly used as base film for LED back light source and nameplate.

Q: Can other thicknesses be customized?

A: Yes. Other thicknesses can be customized according to the customer's specific requirements.

Q: Can samples be provided for testing?

A: Yes, samples or small rolls can be provided according to project requirements for lamination, laminating and performance validation tests.

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