I became aware today of this technology www.mori.com/technology It is described as an edible protective layer, based on silk proteins. I am aware that edible film manufacturers are usually eager to obtain Kosher certification, even when they operate in regions without a significant Kosher consumer market segment, but this was not mentioned in their infomercial presentation.
Is this a potential problem? The consumer can hardly check the brand of the edible film, short of limiting ourselves to purchasing peelable fruits.
Thank you for the website
Max Namer 
Michael Varon
Silk protein is from silk, which is not a problem anyway.
It is not a problem.
In order to be a problem, if made from meat or not kosher fish, it would have to actually have the flavor of that not kosher meat or fish.
Try to imagine selling fruit or something with a flavor of meat.
Ignore it. It is fine.