2 Crucial Paper Surface Coating & Evaluating Machines

The print quality of the paper is as important as the paper quality itself. The quality of the paper depends largely on its roughness and of course its thickness, absorption capacity, and permeability. Where there are a number of machines that can help manufacturers test the printing ability and surface coating of the paper, two among them are the most crucial. Let us discuss them in this article. 

2 Crucial Paper Surface Coating & Evaluating Machines

1. Paper Testing Waxes

The paper testing waxes are non-oily waxes, used to evaluate the surface length or pick resistance of a coated or uncoated paper. Don’t compare them with the normal waxes as they are exclusively designed for the purpose of testing the surface coating of the paper. These papers do not include blotting papers or those coated papers that contain resins in their coating adhesive. 

These waxes are designed to be used by printers, paper, and coated paper manufacturers, lithographers, and related inspection departments.  

2. Wire Bar Coater

A wire bar coater finds application in coating the paper using the traditional coating method. This is an effective instrument to coat the surface using a wire wound bar or Meyer bar. This bar is made from high-quality steel with a wire around it. The thickness of the coating depends on the diameter of the wire. This wire is chosen based on the viscosity of the coating solution, desired thickness, and the speed of the coating. 

Coating materials such as paints, adhesives, liquid printing inks, varnishes, etc. are the most applicable for the wire wound bar coater. The coating is applied under controlled conditions at a coating speed ranging from 2 mm to 15 mm per minute. This method of coating is proven to provide uniformity. 

Bottom Line

So these were the two most crucial surface coating and evaluating machines that manufacturers make use of in the paper manufacturing business. If you’re into manufacturing, printing, lithography, etc. connect with UEC to invest in the right machines at the best prices.