A decal (, , ) or transfer is a

plastic Plastics are a wide range of synthetic or semi-synthetic materials that use polymers as a main ingredient. Their plasticity makes it possible for plastics to be moulded, extruded or pressed into solid objects of various shapes. This adapta ...

cloth Textile is an umbrella term that includes various fiber-based materials, including fibers, yarns, filaments, threads, different fabric types, etc. At first, the word "textiles" only referred to woven fabrics. However, weaving is not the ...

paper Paper is a thin sheet material produced by mechanically or chemically processing cellulose fibres derived from wood, rags, grasses or other vegetable sources in water, draining the water through fine mesh leaving the fibre evenly distribu ...

, or

ceramic A ceramic is any of the various hard, brittle, heat-resistant and corrosion-resistant materials made by shaping and then firing an inorganic, nonmetallic material, such as clay, at a high temperature. Common examples are earthenware, porcelain, ...

substrate that has printed on it a

pattern A pattern is a regularity in the world, in human-made design, or in abstract ideas. As such, the elements of a pattern repeat in a predictable manner. A geometric pattern is a kind of pattern formed of geometric shapes and typically repeated li ...

or image that can be moved to another surface upon

contact Contact may refer to: Interaction Physical interaction * Contact (geology), a common geological feature * Contact lens or contact, a lens placed on the eye * Contact sport, a sport in which players make contact with other players or objects * C ...

, usually with the aid of

heat In thermodynamics, heat is defined as the form of energy crossing the boundary of a thermodynamic system by virtue of a temperature difference across the boundary. A thermodynamic system does not ''contain'' heat. Nevertheless, the term is ...

water Water (chemical formula ) is an inorganic, transparent, tasteless, odorless, and nearly colorless chemical substance, which is the main constituent of Earth's hydrosphere and the fluids of all known living organisms (in which it acts as ...

. The word is short for ''

decalcomania Decalcomania (from french: décalcomanie) is a decorative technique by which engravings and prints may be transferred to pottery or other materials. A shortened version of the term is used for a mass-produced commodity art transfer or product l ...

'', a decorative technique by which engravings and prints are transferred to pottery or other materials. The technique was invented by

Simon François Ravenet Simon François Ravenet (1706 – c. 4 April 1764) was a French engraver. In Britain he is usually termed Simon Francis Ravenet. He was one of William Hogarth's assistants. Biography He was born in Paris, where he studied engraving under Ja ...

, an engraver from France who later moved to England and perfected the process he called "décalquer" (which means "to copy by tracing"); it became widespread during the decal craze or mania of the late 19th century.

Properties

The term "decal" refers to the mass-produced art transfer in two different states: 1. As manufactured, which consists of the artwork printed on the upper side of a paper or film

label stock A label (as distinct from signage) is a piece of paper, plastic film, cloth, metal, or other material affixed to a container or product, on which is written or printed information or symbols about the product or item. Information printed d ...

, temporarily affixed by a typically water or heat soluble adhesive to the upper side of a silicone- or other release agent-coated paper or film backing stock. Decals are produced, shipped, and stored in this composite state. 2. As applied, where only the adhesive-backed artwork remains, affixed to its desired (and appropriate) substrate, temporarily or permanently as designed. Two variations include the traditional ''water-slide'' or ''water-dip'', with the artwork screen-printed on water-resistant paper coated with a layer of water-soluble adhesive, and a dry ''peel-and-stick'' format using a standard adhesive - which technically is not a decal, as there is no "art transfer", rather an adhesive-backed label known as a

sticker A sticker is a type of label: a piece of printed paper, plastic, vinyl, or other material with temporary or permanent pressure sensitive adhesive on one side. It can be used for decoration or for functional purposes, depending on the situation. ...

. When manufactured out of vinyl the latter is known as a ''vinyl-cut-decal''.

Modern production process

Mass-production of vinyl decals starts with large rolls of vinyl sheet. Vinyl is fed through a cutting plotter or large-format printer/cutter which prints the desired image and cuts out the desired shapes. Designs are typically created using specialized computer software and sent to the machines electronically. After the patterns are cut, excess vinyl on the sheet is removed in a process called ''weeding''. Finally, a paper pre-mask can be applied to the top of the vinyl design allowing easy application of multiple letters and shapes. A recent innovation involves the inclusion of a

radio frequency identification Radio-frequency identification (RFID) uses electromagnetic fields to automatically identify and track tags attached to objects. An RFID system consists of a tiny radio transponder, a radio receiver and transmitter. When triggered by an electroma ...

(RFID) circuit (chip and antenna) in the paper or film facestock.

Applications

Decals were popularly associated from the mid-20th century on with

hot rod Hot rods are typically American cars that might be old, classic, or modern and that have been rebuilt or modified with large engines optimised for speed and acceleration. One definition is: "a car that's been stripped down, souped up and made ...

automobiles and

plastic model :''In art and architecture, plastic model may also be any three-dimensional physical model, regardless of material.'' :''In mechanical engineering, a plastic model is a mathematical model of a material which incorporates plasticity.'' 300px, A 4-y ...

s. Along with stickers they are used to "personalize" items, such as musical instruments or sports gear. Government agencies (and some private-public partnerships) use permanent peel-and-stick stickers on vehicles for identification. These "decals" are referred to as fleet markings and are required by law on all fire and law enforcement vehicles in the US. Most fleet markings are created from reflective vinyl with an adhesive backing that is applied in a peel-and-stick manner.

Methods of printing

* Inkjet printing * Laser printing *

Offset printing Offset printing is a common printing technique in which the inked image is transferred (or "offset") from a plate to a rubber blanket and then to the printing surface. When used in combination with the lithographic process, which is based on ...

* Embossing *

Photocopier A photocopier (also called copier or copy machine, and formerly Xerox machine, the generic trademark) is a machine that makes copies of documents and other visual images onto paper or plastic film quickly and cheaply. Most modern photocopier ...

* Thermal printing

References

External links