Plastic Stake Sign Projects

Cor-Plastic, also known by the trade name Coroplast™ is a corrugated plastic substrate made from thin polypropylene plastic sheeting. Think of it as corrugated cardboard made from plastic. Hence the name “Cor-Plastic”.

It comes in various shapes, sizes, and colors, with the most popular form being 18” x 24” white. A standard cor-plastic sign blank is 4mm thick, but thicker, more rugged versions are available. We offer cor-Plastic sign blanks in four sizes: 12” x 18”, the top selling 18” x 24”, 24” x 36”, and 96″ x 48″. Two of these four sizes have ready made companion items for displaying the sign blank.

What makes these lightweight plastic signs so popular? They’re vinyl friendly, easy to use, versatile, and very affordable. Cor-plastic is the ideal substrate for short term outdoor vinyl graphics. Its smooth surface makes for quick and permanent adhesion by just about any adhesive backed vinyl. The flutes (the open channels inside the corrugation) make it easy to mount on vertical stakes for quick and easy insertion in any relatively soft unpaved surface. For this reason the finished package is often referred to as a “yard sign”. By the way, the flutes are always parallel to the short side. This means that when the sign is mounted on a stake, it would be in “landscape” mode.

For use on hard surfaces like sidewalks, cor-plastic signs can be displayed in small portable A-frames. For indoor displays, these nifty light weight signs can be easily hung with grommets or new hangers that fit inside the flutes. So cor-plastic blanks can be used in lots of different commercial and retail spaces from roadsides to restaurants. And, finally, they’re very economical. Corrugated plastic sign blanks are the industry’s least expensive vinyl substrate.

The most common application for cor-plastic signs is the roadside or yard sign, mounted on sign stakes, also known as ‘step stakes’. The most common question about this type of display is the orientation of the flutes. On 18” x 24” sheets, the flutes are perpendicular to the 24” side of the sign blank. In other words, they are situated so that, when you mount the sign on the stakes, your sign will be in a “landscape” orientation, 18” tall and 24” wide. Mounting is a simple matter of aligning the flutes with the tops of the two vertical stakes so that the stakes can penetrate the flutes, and gently pushing them together so that the stakes go in evenly.

To plant your newly mounted sign, place the lower stakes in the ground and push. You can apply pressure with your size twelves on the lower bar, but do so gently. Placing your foot in the middle of the bar may bend it. To reduce the risk of deforming the crossbar, place your foot at the edges where the crossbar is welded to the stakes. Switch from left to right to step the stakes into the ground evenly. If you have particularly tough ground or very high winds, you may need a thicker, heavier gauge stake like the Heavy Duty Cor-plastic holders.