In windy conditions, if Grommets are not fastened in the hem of the vinyl banner, these grommet holes will quickly tear out of the banner. Banner hem tapes are also employed as attractive trim and to forestall delamination and lifting of vinyl hems. References[edit] The caliber of the printing was http://jeffreyxtywc.jaiblogs.com/19404389/the-basic-principles-of-vehicle-wraps-for-sedan