This technique should be used whenever cast film is stretched, e.g. car wrapping or in signage applications. Not only does this technique prevent the film from lifting or coming off in “risk areas”, it offers other advantages such as better and more consistent appearance and less risk of vinyl lifting in the high stretched area.
Film Tensions & Risk Areas
Why Shifting Tension?
There are several reasons; the most important one is the possibility that the film could lift out of a deep groove or channel, where the vinyl has been stretched during application. Moreover, the film could be stretched in such a way that the color or texture in the channels and grooves can visibly change.
How Does it Work?
Heat the film in a place where it can lay flat and without tension (A). This is where the film can be stretched, whereas film should not be stretched into any groove or channel. Now push the film evenly into the groove (B). When necessary, reheat the film in the area (A) and continue to push the film down into the area (B), until the groove is wrapped. Then, squeegee quickly and firmly to secure the film into the groove, then squeegee quickly and firmly in area (A) to secure the application. Notice that the channel film is completely unstressed and without tension. It will not lift here if applied properly using this technique.
Applying cast vinyl into channels via the method described below is recommended and covered by the Arlon Fleet Warranty. However, this method requires absolute consistency on the applicator’s part, so it is highly recommended that an individual who is not confident using this method should practice and gain consistency prior to doing a real installation. It is normal to have 15% of the channel area to lift during the service life of the product, as specified in the warranty. All channels should be trimmed while bridged and then inlaid for a fully warranted application
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