What are the curing technologies for PET optical film coatings-technical knowledge

by:POLYVA     2022-01-18
What are the sources of curing technology for PET optical film coatings: protective film factory direct sales Release time: 2019-06-21 Hits: 1202 At this stage, some people often use light curing to make the system quickly set or 'surface dryThe “shadow” part or the bottom part is completely cured to achieve the “hard-drying” of the system, thus expanding the application range of the light-curing system; for solvent-based coating fluids, you can also place them at high or medium temperature for a while to volatilize the solvent. It is placed under ultraviolet light to avoid the solvent remaining in the coating system and affect its bonding strength or other properties, shorten the curing time, and improve the efficiency. For the preparation of optical films, the curing methods can be divided into thermal curing and ultraviolet curing. Thermal curing is a more traditional and common curing method. Generally speaking, thermal curing is not easy to cause serious volume shrinkage due to curling, which will generate shrinkage stress and affect the strength of the coating. However, thermal curing requires a long period of time and labor intensity, and it is also prone to environmental pollution problems for solvent-based coating liquids. The curing process of radical-type light-curable coatings is easily inhibited by oxygen, and the surface is not cured properly; the ultraviolet light band is different, and the depth of irradiation is different, which will make the inside of the coating not fully cured, thereby making the interface between the coating and the substrate sticky. Insufficient connection strength. Foshan Bowei Environmental Protection Material Co., Ltd. is an electronic material supplier with 20 years of experience. It can produce PET film with multiple functions, such as: sub-(matte) PET film, flame-retardant (fire-resistant) PET film, inkjet printing Film, anti-static PET film, anti-fog PET film, anti-UV PET film, non-shrinking PET film, PET release film, etc. Interested parties welcome to inquire!
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