Water- and solvent-based coating technology

Effect of BOPET film surface treatments on adhesion performance of biodegradable coatings for packaging applications

“…Many commercial polymeric substrates are not completely able to meet the specific requirements for a functional packaging film. Additional layers are often designed and added as coating on the substrate, commonly said web, in order to improve the characteristic of the flexible packaging and to meet the requirements for the desired gas or vapor barrier, for adhesion and sealing, to improve the substrate printability, the aesthetics and durability [1]. This technology allows to functionalize a polymeric substrate applying other materials which are different by chemistry, rheology and thermal and structural characteristics and then to overcome all the constraints related to the functionalization by other process techniques such as multilayer co-extrusion [2,3].…”

“…This technology allows to functionalize a polymeric substrate applying other materials which are different by chemistry, rheology and thermal and structural characteristics and then to overcome all the constraints related to the functionalization by other process techniques such as multilayer co-extrusion [2,3]. http Nitrocellulose and PVdC (Polyvinylidene chloride) copolymer are the most common surface coatings used, even if several synthetic resins, acrylics, biological and natural compounds based on cellulose, polysaccharides or proteins, are used for varnishing the web and to improving barrier formation and heat sealing [1,2,[4][5][6][7][8]. Several innovative coatings are proposed in the literature in order to functionalize polymeric substrates and to promote natural and eco-compatible solutions [9][10][11][12].…”

“…The work of adhesion is strictly related to the chemical composition of the two materials that have to be coupled. Surfaces notoriously difficult to bond, such as polyethylene, polypropylene, and Teflon, are modified by treatments that make the surfaces more polar and chemically active [1,14]. Among polymeric substrates, the polyester films are not porous materials and are characterized by a higher wettability than other polymers such as polyolefins.…”

Development of a Digital Dip Coating System Based Microcontroller

“…Coating technology is a major supporter in the technological advances in nano materials and thin film. Several applications of thin film and nano material can be found in many areas such as the manufacture of components, decorations, jewelry and as a metal coating material to avoid the corrosion [1,2]. In electronics field, electronic components are developing in line with the developing of thin film technology.…”

Evaluation of Hot-Air Drying To Inactivate Salmonella and Enterococcus faecium on Apple Pieces

“…Because dehydration is a dynamic process in which moisture is driven off as product temperature rises, complexities arise in predicting microbial inactivation. Once moisture is driven off of the surface, the rate of dehydration is determined by how fast moisture can diffuse from the interior of the product to the surface (15). If evaporation from the surface occurs faster than internal moisture migration to the surface, case hardening can occur, with areas of lower water activity on the outer surfaces of the product.…”