This could be a piece ofwel debris or een momentje just some lint that’s gotten caught in there. Take a look inside the gun and see if you can spot anything that might be causing this issue. Finally, it’s possible that your Scotch tape gun kan zijn just defective. * https://blogs.cornell.edu/advancedrevenuemanagement12/2012/03/28/department-store-industry/comment-page-4859/