What white backer do you suggest? If I recall from when I worked in the vinyl dept at my old job, we would laminate it with regular white cut vinyl (7725, maybe?) but then we'd back that with a PVC (https://remingtonlaminations.com/products/10-mil-psa-backing-film). Again, if I remember, this was to give it more protection, more opacity, and make it less likely that the vinyl would start to come away when mounted to a wall. Seems like everyone here just sticks with regular old white vinyl. I was asked to quote a fairly large job (large for me) for about 200 12" x 18" 1/8" acrylic signs with second-surface prints. Can I get away with just laminating the clear prints with some white vinyl, or should I get this 10 mil stuff from Remington? Any reason I should stay away from using calendered vinyl for the backing? I'll most likely be using 3M ij180mc-114I agree with JBurton. I’ve been printing on clear vinyl and applying to acrylic for years and it works great. Never once needed a hot laminator. Most any brand of clear vinyl will work, you’ll need to mirror the image and laminate with an opaque white film. Then apply subsurface to the acrylic. You can do this with a laminator or do it wet by hand. Either way works.
Where the tape is applied? What tape?The pvc likely prevents the print film from separating from the acrylic over time where the tape is applied. I can't say for certain, but I'd opt to use it if your previous shop always did this. You ought to hit up Rtape for a sample of their pc or petg laminates. Free samples are always nice: https://nekoosa.com/products/claricap They've always been responsive if I had something odd I was looking for. I'd avoid anything calendared, but to be fair its all interior so...
I wouldn’t use calendered vinyl for this application. I usually use 3m high performance white or something equivalent. Backing with Something rigid like the pvc you mention is defined necessarily if you’re going to vhb these signs to a wall, especially at that size. If you try and tape directly to the vinyl they will fail in a few months or less. I use thin styrene or 1/8” pvc if I want to space them off the wall a little. The thicker pvc gives a “floating” look if you inset it from the sign.What white backer do you suggest? If I recall from when I worked in the vinyl dept at my old job, we would laminate it with regular white cut vinyl (7725, maybe?) but then we'd back that with a PVC (https://remingtonlaminations.com/products/10-mil-psa-backing-film). Again, if I remember, this was to give it more protection, more opacity, and make it less likely that the vinyl would start to come away when mounted to a wall. Seems like everyone here just sticks with regular old white vinyl. I was asked to quote a fairly large job (large for me) for about 200 12" x 18" 1/8" acrylic signs with second-surface prints. Can I get away with just laminating the clear prints with some white vinyl, or should I get this 10 mil stuff from Remington? Any reason I should stay away from using calendered vinyl for the backing? I'll most likely be using 3M ij180mc-114