Difference between revisions of "Coating and lamination"

<onlyinclude>'''Coating and lamination''' are material technologies where a coating or laminate is placed on a material surface to cover this substrate. Lamination is a finishing process in which a plastic film from a roll is bonded to a substrate such as paper, cardboard or aluminum foil. To ensure good adhesion, the process is carried out at elevated temperatures and pressures, both of which are applied via heated rollers (continuous) or presses (discountinuous). In coating, material surfaces are combined with a thermoplastic layer to form a composite material which is bondend together. The purpose of applying the coating or lamination may be functional (e.g., improved strenght and stability), decorative (e.g., aesthetic), or both. </onlyinclude>

==== Bio-based polymers/epoxy resins ====

Bio-based polymers can be derived from biomass, from bio-derived monomers achieved by fermentation, or through polymer synthesis by micro-organisms. The following polymers are applied as coatings and/or lamination:

* Polysaccharides (e.g., starch and cellulose derivatives, chitosan, and alginates)

* Proteins (e.g., casein, whey, collagen, soya, and gluten)

* Lipids (e.g., bees and carnauba wax, and free fatty acids)

* Polyesters (e.g., PHA and PLA)

The product is a material surface/substrate with changed surface properties (e.g., increased barrier resistance) and/or improved aesthetics. Coatings based on polymers are used in several applications and industries, namely within aerospace, automotive, marine structures, biomedical devices, decorative stuff, energy items and packaging.