Protective Film Rolls Company is a china transparent conductive film factory supplying transparent conductive PET film for touch-panel and display-module manufacturing. The core range includes ITO coated PET for touch sensors, transparent electrodes, and EMI shielding. Separate OCA optical bonding films are available for cover glass-to-sensor and sensor-to-display lamination. Master rolls, slit rolls, cut sheets, roll OCA, and die-cut OCA can be prepared according to each project’s electrical, optical, and converting requirements.
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ITO coated PET is the main material group in this category. Its optical-grade polyester substrate carries a transparent conductive layer for touch sensing and EMI control. OCA belongs to the same display-module supply chain but performs a different task: it bonds cover glass, touch sensors, and display modules.
For repeat production, compare each batch with the approved sample. Useful records include resistance uniformity across usable width, conductive-side marking, continuity after converting, optical appearance, roll flatness, slit-edge cleanliness, and winding direction.
Start with the electrical function. Touch-sensor and transparent-electrode projects should define sheet resistance together with PET thickness, conductive-side direction, coating uniformity, and electrode contact. EMI-shielding projects often need a lower-resistance grade, but the final choice must still meet transmittance and haze requirements.
A pet ito film supplier should state usable width, slit-edge condition, core size, roll flatness, and conductive-side identification for continuous converting. OCA should then be matched to the bonding interface, substrate, printed border, adhesive thickness, liner-removal sequence, and lamination route. Even a multi use optically clear adhesive film needs trials because PC or PMMA outgassing and uneven gaps can create bubbles.
Bubble control should be tested on the actual display stack rather than estimated from clarity alone. Before bulk approval, record OCA thickness and liner-removal sequence, then run the intended roller or vacuum process on the real substrate. Review plastic-panel outgassing and printed-border step height. After agreed dwell time and temperature-humidity exposure, inspect bubbles, edge lifting, haze change, yellowing, and delamination.
Item | Typical Range / Customizable Value |
Core product group | Transparent conductive PET film / ITO coated PET film |
Supporting bonding group | OCA optical bonding film |
PET thickness | Typical reference: 50-188 um; select by application |
ITO sheet resistance | Typical reference: 3-300 ohm/sq; define by touch-sensor or EMI-shielding requirement |
Resistance uniformity | Record with agreed test method across usable width and converted area |
Conductive side | Single-side coating; marked direction can be supplied |
Electrode continuity | Check after cutting, lamination, or approved converting route |
Light transmittance | Grade-dependent target; record by agreed test method and module stack |
Haze | Select low-haze grade by optical requirement |
Supply format | Master roll, slit roll, cut sheet, or converted shape; define core and winding direction |
Slitting tolerance | Define by downstream process and edge-quality requirement |
OCA thickness | Typical reference: 25-250 um; define by bonding position and printed step |
OCA format and liner | Roll OCA / die-cut OCA; dual-liner or specified removal sequence |
OCA peel reference | 180-degree peel test; record substrate, dwell time, and peel speed |
OCA appearance review | Check bubbles, edge lifting, haze change, yellowing, and delamination |
Repeat-order control | Approved sample / retained sample / batch traceability |
Protective Film Rolls Company can supply selected PET thicknesses, sheet-resistance grades, marked conductive sides, roll widths, roll lengths, core sizes, outer diameters, slit-width tolerances, sheet sizes, and winding directions. OCA requests can include thickness, roll or die-cut format, liner structure, removal sequence, converted dimensions, and cleanroom handling. As a china transparent conductive film factory, we align production records with the approved sample, retained-sample reference, batch traceability, and repeat-order requirements.
An ito pet film factory should treat the conductive layer as an electrical and optical structure, not ordinary clear PET. Compare coating quality, resistance uniformity, conductive-side direction, continuity after converting, roll flatness, and slit-edge cleanliness with the approved sample. For EMI shielding, lower resistance still needs to be balanced against display visibility. For touch sensors, check electrode contact after cutting and lamination.
The suitable range depends on electrical function, optical target, electrode design, and module structure. Sample testing is more reliable than automatically selecting the lowest resistance.
Use marked roll direction, protective-layer instructions, and continuity testing. Particles, fingerprints, and scratches can affect electrical contact.
Not automatically. Cover glass-to-sensor, sensor-to-sensor, and sensor-to-display lamination may need different thicknesses, liners, and validation conditions.
Approve the display-stack sample and record resistance, appearance, liner sequence, winding direction, and converted-size requirements before repeat production.
