The primer (often also called primer) is used to protect an object by a first layer and at the same time to improve prison conditions for one or more yet to be applied protective and decorative layers. Materials on which hold paints are bad, pretreated with an adhesion promoter. Applications can be found in various areas of artistic, trade or industrial materials and paint.
In woodworking, the primer is carried out by half oil. The use of this oil has a very long tradition; it has probably been used in ancient times. Fresh wood is very sensitive to dirt - even perspiration can be enough to leave permanent stains. (However, this risk is prevalent in woodworking in carpentry limited because of the intensive skin contact with sawdust and chips usually ensures dry hands here.) Usually get wood products from the carpentry shop before delivery at least one primer coat of paint. Although the linseed oil closes pores and vacuoles of the wood slightly, but improves the capacity for other paints so far as the subsequent coats less deeply soak into the wood and thus a multiple application can be avoided.
Safety: When using half oil extreme caution. Half oil composed of equal numbers of linseed oil and turpentine substitute. This mixture is flammable and can lead to self-ignition. Used cloths, with half oil residues are therefore always be stored in sealed containers.
Most metalworking processes involve a primer before final paint job. Thus, a corrosion protection primer is applied in the automotive field on the bare sheet metal, which leads to a very good adhesion to the plate and thus prevents corrosion or at least slowed down. This is followed by coating with base coat and finally clear coat.
The primer for painting and decorating work on walls and ceilings, the deep groundwater (also deep groundwater ), usually on the basis of alkyd or acrylic resin. When wallpapering waste traditionally referred to a sub wallpaper from recycled paper and paste, which should reduce the absorbency of the surface and compensate for any unevenness in the wall. When plastering as a base for plaster base are pre- injector, primers used. In plasterer area the primer strengthens highly absorbent plaster and prevents water spots. The technical term for this is ( deep groundwater ).
In the performing arts, the primer is part of a painting or a sculpture, as amended, and is located directly on the canvas, the wood or the other image carrier (metal, parchment, and others) under the color layer. Most often it is white in color tone and consists of glue and finely powdered chalk or chalk ground. With a primer, which is usually applied in several layers with a brush or spatula and then smoothed usually, but can also be designed plastically, the artist receives a value suitable for the application of paint canvas. The recipes for various artistic painting surfaces and primers can be found in the historical treatises on painting and the painter books. Since the mid-20th century, synthetic resin dispersions as binders for the novel fillers for application, such as finished aqueous acrylic primers.