Sign & Digital Graphics

December '19

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S I G N & D I G I T A L G R A P H I C S • December 2019 • 51 you are able to print onto it. All calen- dared PVC has a memory and wants to shrink back to its original state, and the additives in the PVC stop it from doing that." Holdom says that typically mono- meric PVC will have a life of around three years in application and this is a short- term product as it is very cost effective for some applications. "Polymeric is typically more expensive than monomeric PVC. Using the same kind of raw materials and calendaring process as monomeric, but the ingredi- ents of the polymeric PVC are of a higher quality, hence this PVC has a longer life of around five to seven years. It also can be used on other surfaces that don't have to be flat, so it can be used in more applica- tions," he says. "Finally, the last type of PVC is called cast, again using the same type of raw materials in that of monomeric and polymeric, cast uses the highest-quality of ingredients available. The other dif- ference is in the production process of the material. Cast PVC is not calendared (rolled out); the PVC is poured into a cast- ing tray where it is made flat from the beginning. Back to the analogy of baking, making cast PVC is like making a sponge cake. You pour the ingredients into a cake tin, bake, and it comes out the shape and size of the tin. This is the same way cast PVC is produced, so with the high-quality ingredients and casting process, the PVC has no memory and will not shrink and can be formed or wrapped into many different shapes. Hence, the life of the product can be in excess of seven years. This makes cast product ideal for high- end applications such as vehicle wrapping for the auto industry." He adds that all PVC types of vinyl are available in gloss/matte finishes with white and clear face films—offering a multiple range of options. "The next part of the process is understanding the adhesive. In simple terms there are two types of adhesive for PVC—removable and permanent. So, understanding the application, you need to know how long it's going to be installed and how easily it needs to be removed. Also, another key point is that all remov- able adhesives turn permanent after time, so if you use a removable, then knowing how long it's installed for will make a big difference in how you re-install and then clean up afterward." He says in addition to the two basic types of adhesives there are some varia- tions, which are unique to Drytac. ReTac adhesive technology, unlike standard removable adhesive, never turns perma- nent so the material can be installed and removed indoors without damaging the surface it's stuck to. He explains the next type of adhesive unique to Drytac for PVC is SpotOn. "This is an adhesive dot which is 'printed' to the substrate, the dot of adhesive makes all of the air escape when installing, mak- ing this product very easy to apply. Again, not needing a professional installation team, this means graphics can be installed by the end user and ideal for short-term promotions and events." Wall Graphics Gaining in Popularity Josh Culverhouse, graphic innovations market manager, at ORAFOL in Black Creek, Georgia, notes that interior and exterior textured wall graphics are begin- ning to really take off. "It's apparent that graphic shops are becoming more com- fortable with the various opportunities The three-sided concrete bar was created for the Jacksonville Jaguars' 2019 NFL season. Faris says that vinyl used was Vinyl 3954 ORAJET. Images courtesy of SignsPlus and ORAFOL. We are seeing growth mainly in products for floor and wall coverings, where there is a requirement for unique and custom graphics in various locations, from short term promotions to office and home decor.

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