Corona Treated Polyester Film
- Material: BOPET / polyester film
- Surface: One side corona treated; both sides treated available
- Thickness: 12–125 micron
- Width: Custom slit widths available
- Color: Clear transparent
- Form: Roll stock or sheet
Protective Film China Company is a manufacturer of corona treated polyester film for printing, lamination, adhesive coating, and related converting uses. This clear BOPET material keeps the strength, clarity, and dimensional stability expected from polyester film while adding a treated surface for better wetting and bonding. Industry references consistently describe corona-treated PET as a practical choice when untreated film cannot provide reliable adhesion for inks, coatings, or adhesives in downstream processing.
Product Photos
Product Overview
Corona treated polyester film is a biaxially oriented polyester film used where surface performance matters as much as base film strength. Published product data shows that one common structure is one side corona treated with the other side plain, while both-side treated versions are also available for applications that need improved bonding on both surfaces. The treated side is commonly used for printing, laminating, coating, or metallizing, and the plain side can remain available for handling or layered construction. This makes the material suitable for converters that need stable processing rather than generic film supply alone.
Benefits
- Improves wetting for inks, coatings, primers, and adhesives.
- Helps support cleaner print anchorage and more stable lamination results.
- Retains PET advantages such as clarity, tensile strength, and dimensional stability.
- Available in one-side or both-side treated constructions to match different process setups.
- Suitable for printing, coating, laminating, and metallizing applications.
- Can be supplied in custom slit widths and converting-ready formats for production use. This last point reflects common market practice.
When Is Corona Treated Polyester Film the Better Option for Converting?
This film is the better option when the process depends on surface bonding, not only on film strength. Standard PET may already provide transparency, stiffness, and heat resistance, but untreated surfaces can be less suitable for ink hold, coating wetting, or adhesive anchorage. A treated surface reduces that limitation by improving receptivity at the contact layer. That is why this clear polyester film is often selected for printed structures, laminated webs, coated materials, and metallized constructions that need more dependable downstream performance.
Packing and Loading
TDS
Item Typical Value / Option Product Name corona treated polyester film Base Material BOPET / polyester film Appearance Clear transparent film Surface Type One side corona treated, other side plain Optional Type Both sides corona treated Common Thickness Range 12–125 micron Example Published Grades 12, 23, 50, 75 micron examples visible in market references Treated Side Surface Energy Common published example: 52+ dynes/cm Plain Side Surface Energy Common published example: 40+ dynes/cm Mechanical Profile High tensile strength and good machinability Dimensional Stability Good Heat Resistance Typical PET high-temperature handling performance Supply Form Roll stock, slit roll, sheet Main Uses Printing, lamination, adhesive coating, metallizing
Applications
- Flexible packaging laminates
- Printed packaging webs
- Adhesive coating constructions
- Label and graphic materials
- Metallizing base film structures
- Industrial converting uses
How Do You Know if the Film Specification Matches Your Process?
The right specification should be selected by process conditions, not thickness alone. Before ordering, it is useful to confirm whether the job needs one treated side or two, which ink or adhesive system will be used, and whether the film will run through printing, coating, laminating, or metallizing. Surface energy targets can differ by application; for example, Enercon’s reference tables list different PET treatment ranges for water, solvent, and UV printing and coating systems. In practical terms, the best treated PET film is the one that fits the real converting line, not simply the lowest-cost roll. For critical projects, line trials are a sensible step before mass production.
FAQ
1.What is corona treated polyester film used for?
It is used for printing, lamination, coating, adhesive bonding, and metallizing where better surface receptivity is required.
2.Is one-side treatment enough for many jobs?
One-side treated material is widely used when only one working surface needs improved bonding, while both-side treated film is chosen when both surfaces must perform in the finished structure.
3.Can this film be supplied in custom sizes?
Custom slit widths, roll lengths, and converting-ready formats are common supply options in this market, although exact availability depends on the production setup.
4.What should be confirmed before mass use?
Thickness, treated side requirement, width, application process, and target adhesion level should all be checked before production use. For demanding applications, line testing is recommended before full production.
