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Finishing

BOBST hails major technology ‘breakthrough’

BOBST has announced details of its new AluBond process, which it says provides high metal adhesion and surface energy levels through vacuum metallisation.

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BOBST says AluBond can increase metal bond strength and metal adhesion on commonly used substrates

The AluBond process is an in-line hybrid coating technology that promotes chemical anchoring of the first aluminium particles, creating a metallising seeding layer that the firm say provides superior bond strength properties.

During this process, high adhesion is achieved when there are direct chemical bonds between the aluminium coating and the polymer surface. BOBST says increased chemical bonding by the creation of the seeding layer enhances the strength of the lamination bond, thus leading to higher performance during lamination, extrusion and coating processes.

In a statement, BOBST says: “BOBST AluBond has been shown to greatly increase metal bond strength and metal adhesion on the most commonly used substrates such as PET, BOPP, CPP and PE during aluminium vacuum metallisation.

AluBond generates added value by extending surface energy stability on metallised films over a long period of time and may eliminate the need for an additional surface treatment boost

“In addition BOBST AluBond has been shown to significantly increase dyne level retention which translates in improved ink wettability during printing and enhances structure stability during lamination.

“AluBond generates added value by extending surface energy stability on metallised films over a long period of time and may eliminate the need for an additional surface treatment boost.”

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