In brief
UV texture transfer replicates a mold surface in a curable resin on film. Filling, curing and release must remain stable across the full print area and production run.
Start by checking the PC, PET or TPU film surface and mold orientation
Start by checking the PC, PET or TPU film surface and mold orientation. Meter resin, exclude air during nip contact, cure with suitable UV exposure, then release the mold. LICHAO equipment provides tension correction and metered dispensing on its roll machine, and roller pressing with LED UV curing on its sheet machine. These layouts suit different feed formats.
Too little resin can leave voids; too much can cause overflow and thickness variation
Too little resin can leave voids; too much can cause overflow and thickness variation. Mold contamination, trapped air and uneven nip pressure can also alter the replicated geometry. Kuraray describes a continuous process that stamps UV-curable resin on film while curing it. This illustrates the mechanism, not a performance claim for a LICHAO model.
Record film lot, resin quantity, web speed, lamp setting and defect location at the start, middle and end of a run
Record film lot, resin quantity, web speed, lamp setting and defect location at the start, middle and end of a run. Compare microscopic texture with visual appearance, adhesion and abrasion requirements. One attractive photo does not establish repeatable production.
Roll-to-roll equipment suits continuous webs; sheet equipment suits discrete panels and bounded parts
Roll-to-roll equipment suits continuous webs; sheet equipment suits discrete panels and bounded parts. Qualify the customer's mold, resin and film together. Rated machine speed is not the proven throughput of a new formulation.
How do we start a trial?
Provide substrate, controlled artwork, material data, process flow and acceptance criteria. Use representative samples to confirm configuration and process window.
References and fact sources
Original process guidance. Verify equipment fit and performance with customer samples.
Mr. Yang can discuss a trial plan from your film, drawing and acceptance requirements.
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