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Why is the adhesion strength of PET film printing, lamination, and aluminum plating insufficient-technical knowledge

by:POLYVA     2021-12-27
Why is the bonding strength of PET film printing, laminating, and aluminizing not enough? Source: protective film factory direct sales Release time: 2019-05-01 Click: 2061 For the bonding strength of printing, laminating, and vacuum aluminizing, adhesive tape is usually used as On the inspection side, there are three types of conditions: full peeling, partial peeling, and non-peeling. The first two are all of insufficient drilling strength. polyva will answer for you why this is the case. Analysis of the cause The strength of the combination of PET film, ink and mink mixture is restricted by the surface tension of the PET film. The surface tension of the untreated PET film is 42~48N/S, which cannot meet the bonding strength requirement with the ink adhesive. Therefore, it is important to take some measures to increase the surface tension of 55N/cm or more such as corona treatment.
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