FLEXIBLE PACKAGING
The AluBond metalizing process achieves high bonding strength on any substrate . It is an advanced metal adhesion technology that can achieve metal adhesion values of up to 5N / 15mm . Moreover , the innovative approach has eliminated the need for chemically treated films .
z How does Bobst AluBond work ?
The Bobst AluBond process is an in-line hybrid coating technology incorporated in its Expert K5 vacuum metalizers . It promotes the chemical anchoring ( chelation ) of the first aluminum particles creating a metalizing seeding layer that provides superior bond strength properties . Very high adhesion is achieved when there are direct chemical bonds between the aluminum coating and the polymer surface . Increased chemical bonding by creating the seeding layer increases lamination bond strength and leads to high performance during lamination , extrusion , and coating processes hence preventing the failure of the packaging .
z Increased metal adhesion and dyne level retention
AluBond has been shown to greatly increase metal bond strength and metal adhesion on the most commonly used substrates ( PET , BOPP , CPP , and PE ) during aluminum vacuum metallization . In addition , the process innovation also significantly increases dyne level retention , which translates in improved ink wettability during printing and enhances structure stability during lamination . Finally , the adhesion technology generates added value by extending surface energy stability on metalized films over a long period and may eliminate the need for an additional surface treatment boost such as a corona refresh before converting . z
z South Asia keeps adding high quality flexible packaging capabilities
Meghna Prints in Bangladesh installs Heliostar II gravure press
Earlier this year , Meghna in Bangladesh installed a W & H Heliostar II gravure press rated at a speed of 400 meters a minute . Meghna has been using locally produced gravure cylinders and locally manufactured inks on the press while achieving the rated speeds on the new press . The Heliostar II has the fully integrated W & H Procontrol / Vision system for ease of operation and single-point real time information .
The automation features on the press include driven inking rollers , while the Vision system provides intelligent and fully integrated web inspection with a 100 % defect detection . The Heliostar II at Meghna uses the Easy-Sync-Heliocontrol for better register setting and control . The press also features high strength dryers .
“ We admire the machine performance for its top-notch quality with unparalleled speed of 400 meters a minute and the uptime performance of the press ,” stated Md Harun Or Rashid , the senior general manager at the Meghna Group . “ With the Heliostar installation [ at Meghna ], we have set the precedent for high capacity presses of 400 meters a minute and above with fast job changeovers . Our rotogravure presses are capable of handling highly critical applications – with highly precise register accuracy for demanding substrates and low contrast ink and varnishes ,” said Anuj Sahni , general manager Sales and Marketing of W & H India , which looks after the Bangladesh market .
The Meghna group is one of Bangladesh ’ s largest leading conglomerates with interests in information technology , media , pulp and paper , stationary , aviation , FMCG products , packaging , real estate , ship building , healthcare , hospitality , chemicals and energy amongst several others . The group has an annual turnover of approximately US $ 2.5 billion and 36,000 employees . z – Naresh Khanna
The Meghna flexible packaging team in front of the new W & H Heliostar II rotogravure press . Photo W & H
5 October 2021 Packaging South Asia
29