Pre-Coated Polyester Film | Diffuser & Brightness Enhancement Base Manufacturer-Yuxing Film

Diffusion Base Film

CY20DH Pre-Coated Polyester Film for Light Diffuser & BEF

CY20DH is a transparent BOPET polyester film with easy adhesion and good recoating performance. It adheres to ink and resin and is mainly used as a pre-coated base film for brightness enhancement film, diffuser film, hard-coated film, IMD, and printing film applications requiring high adhesion performance.

5B adhesion

Easy adhesion

Good recoating

Transparent BOPET

Optical pre-coated base film

Product Model:

CY20DH

Key Highlights

Easy adhesion

Flawlessly adheres to graphic ink and optical resin, making it incredibly suitable for demanding applications requiring high adhesion performance.

Coated PET film recoating performance icon

Good recoating performance

Provides excellent recoatability for functional subsequent coating layers entirely without experiencing any adhesion failure.

Optical transparency

Typical high transmittance is about 90.18%-91.21%, perfectly suitable for optical film substrate applications.

Chemical coated PET film stable adhesion icon

Stable adhesion performance

Consistently achieves an absolute 5B rating across all available thicknesses for strictly reliable bonding.

Technology & Advantages

High-end optical films, hard-coated films, IMD panels, and intricate printing films typically require transparent PET base films with flawlessly good adhesion and recoating compatibility. Through specialized chemical pre-coating treatment, CY20DH functions as a premium coated PET film that provides an unyielding adhesion foundation for optical resin, ink, or downstream coatings.

CY20DH Pre-coated polyester film manufacturing technology

Core Values

Adhesion Support:
Achieves flawless 5B adhesion test results uniformly across all thicknesses. Provides reliable, chemical-level bonding to ink, optical resin, and downstream hard coatings for highly demanding structural applications.

Optical Compatibility:
Impressive high transmittance (90.18-91.21%) and strictly controlled low haze make it perfectly suitable for high-end optical film substrates requiring absolute glass-like clarity.

Processing Compatibility:
Aggressively supports recoating, high-definition printing, hard coating, and IMD decoration. It is the ideal foundational pre-coated polyester film for fabricating brightness enhancement films and reliable diffuser film rolls.

Applications

Brightness Enhancement

Utilized heavily as a highly reliable pre-coated base film for advanced brightness enhancement film (BEF) optical structures.

Diffuser Film

Employed flawlessly in mass-produced PET light diffuser film roll and display substrate applications.

Coated PET film for hard coating substrates

Hard-Coated Film

Serves as a resilient coated PET film substrate specifically tailored for severe scratch-resistant hard coating.

Chemical coated PET film for IMD printing

IMD / Printing Film

Extensively used in IMD decoration and printing film applications requiring unbreakable surface ink adhesion.

Technical Specifications

Properties	Unit	Standard	Typical Value
Thickness	μm	GB/T 13542.2-2021	50 / 75 / 100 / 125 / 175 / 188 / 250 / 300 / 350 / 400 / 450
Tensile Strength - MD	MPa	GB/T 13542.2-2021	167 / 167 / 171 / 203 / 188 / 190 / 178 / 191 / 165 / 166 / 148
Tensile Strength - TD	MPa	GB/T 13542.2-2021	212 / 219 / 217 / 204 / 195 / 190 / 182 / 154 / 159 / 157 / 128
Elongation at Break - MD	%	GB/T 13542.2-2021	162 / 161 / 164 / 152 / 161 / 161 / 165 / 170 / 164 / 192 / 187
Elongation at Break - TD	%	GB/T 13542.2-2021	115 / 114 / 114 / 119 / 133 / 126 / 160 / 173 / 169 / 163 / 183
Heat Shrinkage @150°C, 30min - MD	%	GB/T 13542.2-2021	0.99 / 1.04 / 0.95 / 0.74 / 0.53 / 0.63 / 0.95 / 0.62 / 0.61 / 0.64 / 0.64
Heat Shrinkage @150°C, 30min - TD	%	GB/T 13542.2-2021	-0.05 / -0.09 / -0.10 / 0.14 / 0.09 / 0.06 / 0.12 / -0.11 / -0.12 / -0.10 / -0.12
Transmittance	%	ASTM D1003	91.12 / 91.17 / 91.21 / 91.10 / 91.04 / 90.61 / 90.55 / 90.18 / 90.35 / 90.27 / 90.43
Haze	%	ASTM D1003	1.40 / 1.43 / 1.69 / 1.65 / 1.70 / 1.74 / 1.97 / 3.80 / 4.46 / 4.89 / 5.31
Clarity	%	Clarity Meter	99.7 / 99.6 / 99.6 / 99.6 / 99.6 / 99.6 / 99.5 / - / - / - / -
Adhesion Test	-	ASTM D3359	5B / 5B / 5B / 5B / 5B / 5B / 5B / - / - / - / -

Remark: The comprehensive parameter table is meticulously organized from the readable PDF TDS content. MD refers to machine direction and TD refers to transverse direction. All items are delivery inspection items. Values for non-preferred nominal thicknesses of this coated PET film are obtained strictly by interpolation.

Packaging & Logistics

Storage Conditions

Store the pre-coated polyester film strictly in a clean, dry, and consistently ventilated place to preserve the surface adhesion layer.

Storage Environment

Keep deliberately away from fire, active heating sources, and direct sunlight prior to optical processing.

Pallet

Solid fumigation-free wooden pallets designed to be perfectly suitable for safe global export transportation.

Label Information

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

Slitting Range

Different precise slit widths can be supplied optimally according to customer optical laminating equipment and continuous production requirements.

Supply Note

Our regular material specifications powerfully support mass batch supply. Lead time depends completely on exact order specifications, total volume, and schedule.

Packaging of pre-coated polyester film rolls for diffuser films

Frequently Asked Questions

Q: What is the CY20DH pre-coated polyester film mainly used for?

A: Due to its extreme clarity and chemical surface treatment, it is fundamentally used as a highly functional pre-coated base film for fabricating brightness enhancement films, diffuser film rolls, hard-coated films, complex IMD panels, and precision printing film applications.

Q: What is the exact adhesion performance of CY20DH?

A: As a premium coated PET film, the TDS officially confirms perfect 5B adhesion test results uniformly across all manufactured thicknesses.

Q: Is this film perfectly suitable for adhesion to industrial ink and optical resin?

A: Yes. The chemical surface treatment ensures that it flawlessly adheres to both advanced graphic ink and specialized optical resin.

Q: What is the typical thickness range available?

A: The comprehensive TDS lists standard thicknesses ranging massively from 50μm up to 450μm.

Q: Can evaluation sample rolls be provided for optical testing?

A: Yes, samples or small evaluation rolls can be rapidly provided according to exact project requirements for crucial resin coating, lamination, and visual performance validation tests.

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