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Coating Services Terms

Adhesion – The strength of the coating bond to the substrate. Some techniques for measuring adhesion include the tape test, scratch adhesion test and stud-pull-off test.
 
Adhesive Applicators – Tools used to apply an adhesive or bonding agent, including squeeze bottles, pressure tanks, glue guns and coating machinery.
 
Binder – A non-volatile material, commonly a resin, in a coating that forms a film by binding the pigment and additive particles together.
 
Biocide – A chemical agent, sometimes added to waterborne coatings, which prevents microbial degradation by killing the organisms that cause it.
 
Bituminous Coating – A compound made from tar or asphalt that provides a protective finish for a surface.
 
Coating Applicator – A machine used to apply defect-free films to products. Factors that affect the quality of the coating include line speed, viscosity and percent solids.
 
Cohesion – The ability of a substance to adhere to itself. When delamination occurs within a material, it is referred to as cohesive failure.
 
Delamination – Also known as “cohesive failure,” it is the separation of a coating from its substrate. Delamination can also refer to the division among multiple coating layers.
 
Hylar – A material that is quite stable when exposed to harsh environments and is applied to such products as semiconductors, chemical processing, wire, cable, piping and tubing. Hylar is useful in the preparation of corrosion-resistant coatings for chemical process equipment and durable decorative finishes on building panels, due to its ability to be dissolved at high temperatures in certain polar solvents, such as esters and ketones.
 
Insulbar – A glass-fiber, reinforced polyamide nylon material that provides superior insulation, strength and durability, especially on windows.
 
Kynar – A material used in coating applications to provide high mechanical and dielectic strength, thermal stability and abrasion, chemical and solvent, UV and radiation and weathering resistance. Kynar coatings have been used as pipe liners in chemical processing plants, on equipment that is constantly exposed to high concentration of chlorine and chroline dioxide, typically in paper and pulp processing plants, and in silicon microcircuit fabrication.
 
Parylene – An atypical polymer conformal coating that conforms to almost any shape.
 
Substrate – The material that is being coated.
 
Scratch Adhesion Test – An adhesion test for coatings that normally uses a diamond stylus to apply a force to the coating. The test is affected by factors that include the substrate material and its hardness, the geometry of the part and the thickness and hardness of the coating.
 
Stud-Pull-Off Adhesion Test – An adhesion test in which a stud containing a head with a specified surface area is epoxy-glued to the coating. A machine pulls on the stud with amplifying force until it is pulled off.
 
Tape Adhesion Test – An adhesion test in which a certified tape is adhered to a coating and removed. If any coating is observed on the tape, it is a sign of an adhesive problem.