The Basics of Making Polyester Labels

Polyester Label MaterialPolyester labels are used by many businesses for a number of applications. The reason why it is a go-to label for many is because of its inherent qualities that make it durable, great to look at, and cost effective. While you may take it for granted that these labels are simply there and serve a branding purpose for companies, there is actually a rather lengthy process that goes with each label that you see.

It all begins with the creation of the material used for these labels – the Mylar or polyester film. Also called PET, which is an acronym for polyethylene terephthalate, this material is made with a combination of ethylene glycol and dimethyl terephthalate, which is then mixed with terephthalic acid. The process involves heating at high temperatures in various stages, with the resulting polymer being extruded into long ribbons.

All polyester material, be it for the creation of sheets, cloth, or what-have-you, begin with this amalgamation of chemicals. The first step is called the polymerization, hence this product is a polymer. What follows next in the process is drying, after which the material is cut up into chips, which are then processed into film ideal for use as labels, by way of extrusion on a casting drum. The material is then stretched into sheets to create the film used in making labels with the help of rollers, controlled heat, and careful monitoring.

Polyester label

The film that is produced is rolled into what is called master rolls, and are cut according to the specifications and needs of each customer. These labels can be rolled into various thicknesses as well, with a wide variety of film thicknesses for people to choose from. These thicknesses are dictated by the amount of pressure that the rollers use as well as how much stretching is done to each batch. Thicknesses can range from 350 microns to 1 micron, and the choice is usually dependent on the kinds of films your chosen manufacturer has for you.

When it comes to the printing of these labels, the process that you choose will determine how sharp, precise, and durable these tags will be. The printing processes you can choose from include 4-color process, digital printing, laser printing, and many more. The kind of marking method you choose will be dependent on your chosen manufacturer and what they can offer you. It will also be dependent on what kinds of labels you are making as well as how big these will be.

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