- May 23, 2020
with this understanding of property of Mylar, is there any alternatives for mylar ,which is transparent?Mylar is one of the most difficult things to glue that there is.
THREE coats of MEK-thinned contact cement is what Rick's Glass Teck (the top sailplane race-prep shop in CA back in the day) used to do.
Some of the really good transfer adhesives, like the red colored TESA tape, would likely do as well or better. I'm hoping to do some experiments with 3M VHB tape and Mylar sometime in the future.
From Wikipedia:I thought I read Lazairs were covered in Tedlar, possibly taped on.
Tedlar also have a very slick, low surface energy finish, making it just as hard as Mylar to glue. Same/same for Kapton, another polymer film.The wing and tail covering for the first 50 Lazair kits was an opaque urethane-impregnated nylon fabric. This was then changed to translucent Mylar PET polymer film, attached to the airframe with single- and two-sided tapes. The Mylar proved to have a short service life due to UV damage, so it was eventually replaced by the more expensive Tedlar PVF film.
Source? From Construction | Skyranger ENthe Skyranger and other European microlights are changing over to a heavy Mylar skin. It's very like the stuff used on building sites to block the view. It's got a better UV rating than standard dacron.
Covering is with pre made sewn fabric envelopes, which quickly slide into position and tension. No traditional smelly and messy doping and painting required!
Among adhesives, many hold, but there is no comparison in terms of making a fast strong, flexible repair: Dr. Sails is the leader. Polyurethanes and G-flex (Karmarepair note: a flexible epoxy from the WEST people) will work temporarily, but the result is much stiffer and epoxy is vulnerable to UV. Long curing times can make it difficult to create a good bond; clamping with weights (sand bags are best) is required and the sail wont be off the floor for days. Ordinary epoxies, including 5-minute epoxies, are too rigid and will result in a weak repair that will fail if the repair flexes too much. For laminate sails, we're sold on Dr. Sails.
Source ? I have skin less skyranger and do not want to buy disposable skin.. if were is better alternativethe Skyranger and other European microlights are changing over to a heavy Mylar skin. It's very like the stuff used on building sites to block the view. It's got a better UV rating than standard dacron.
My UNDERSTANDING (not the same as my TESTING, which I haven't) is that this is DESIGNED to stick to Mylar. I would bet that Tedlar and PE would be OK as well; Teflon, not so much.Can anyone verify that the Dr. Sails glue product mentioned above bonds well to Mylar, Tedlar, Teflon, PE or the other "hard to glue" plastics?