What does gravure coating mean?

Gravure roll coating is a technique used to coat fluids of a wide range of viscosities (up to 1500mPa s)onto substrates at speeds of up to 900 m/min (Booth,1970,1990). Both the shape and the size of the gravure pattern can be varied which affects the final properties of the coating.

What is a gravure roll?

Gravure Coaters In direct gravure coating an engraved roll is used to control the amount of coating that is delivered to the web. This engraved roll (often referred to as the gravure or applicator roll) typically features a steel or ceramic surface into which a cell pattern is engraved.

What is roll coating used for?

Roll coating is most suitable for applying adhesives to flat sheets and film, and may be used for parts as large as 2 meters.

What is the difference between offset and gravure printing?

The gravure printing process has the ability to print a smoother image and more consistent image on lightweight papers. Web offset is an offset printing process, whereas gravure is intaglio (i.e. the cylinder comes into direct contact with the paper and is not offset). Web offset inks are dried by heat from a gas oven.

What is comma coating?

Introducing Comma Coater® In this method, a film is formed by letting the substrate move through a gap created between the comma roll® and the back roll. Suitable mainly for medium to high viscosity, for producing medium thickness film coating.

What does coater mean?

(ˈkəʊtə) noun. a machine that applies a coating to something.

What is offset gravure printing?

A variety of gravure printing in which the image is transferred from a gravure cylinder to a rubber-covered transfer roller and, ultimately, to the substrate. Offset gravure is also known as indirect gravure, and offset gravure that is performed on a flexographic press is known as flexo gravure. …

What is knife coating?

Knife coating is a process where an excess of coating material is applied to the substrate and removed by a metering blade to achieve the desired coating thickness (Fig. 10.5).

What does reducer mean?

Definitions of reducer. a substance capable of bringing about the reduction of another substance as it itself is oxidized; used in photography to lessen the density of a negative or print by oxidizing some of the loose silver. synonyms: reducing agent, reductant. types: hydrazine.

What is a coating technician?

Coating technicians apply paints, varnishes and other chemicals to individual parts, machines, automobiles and other products. They typically use power tools, such as spray guns, or operate automated painted systems.