Coating & Laminating
Tullis Russell specifies Vetaphone for new Kroenert line
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K manufacturers of security and label stock coated products, Tullis Russell has installed Vetaphone corona treatment technology on its production line in Bollington, Lancashire. The commissioning has allowed the company to expand its portfolio of coatings on paper and film for complex specialist applications.
Tullis Russell became closely involved with Kroenert, the leading German manufacturer of coating machine technology in 2016, with a plan to integrate advanced coating capabilities at its Bollington site. The result was a Kroenert coating line
that is designed and built to handle thin films, as well as high caliper board, and apply thin aqueous coatings, plus thick and highly viscous coatings. The system design is characterised by duplex coating that allows Tullis Russel to coat one layer on the front and one layer on the back, or two layers on the same side giving maximum flexibility. In addition, the coating head’s trolley design allows quick changes between five different coating technologies, which highlights the two-layer curtain coating capability. “After an intensive test with the Tullis Russell team in our technology centre, we were able to define the best setup for the coating equipment to ensure the success of the project. Because the quality of the components was such a key issue, Vetaphone was the obvious partner to choose for surface treatment,” said Kroenert MD Markus Waterkamp. One of the fundamental requirements was the ability to surface treat substrates accurately and consistently,
and the decision to integrate Vetaphone technology was made following in-depth technical discussions and appraisals with the Danish manufacturer.
Tullis Russell sales & marketing director Mitch Lambert said: “Having the Vetaphone Corona unit, has allowed us to expand our portfolio into developing coatings on films for specialist, complex applications. The ability to treat our own substrates now gives us the flexibility to produce constructions that would otherwise have been a specification challenge to our supply chain team.”
Vetaphone installed a VE-1E-B treater unit with iCorona 4 generator capable of supplying 24kW of power to the nine finned electrodes. The 18,500sq m multi-level manufacturing plant in Bollington now has the capability of coating to very fine tolerances, manufacturing multi-layer laminations, and converting and delivering the end products in sheets or reels.
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vetaphone.com
Toyochem launches new BPA-NI internal coatings for metal cans
oyochem Co., Ltd., the polymers and coatings subsidiary of Japan’s Toyo Ink Group, has launched a new line of Bisphenol A non-intent (BPA-NI) internal coatings for metal beverage bottles and cans. Based on acrylic emulsion and polyester resins, the new BPA-NI internal sprays and coil coatings for stay-on tab (SOT) ends are specially formulated to achieve the required performance results, while addressing BPA- related health and food safety concerns from regulators and consumers alike. Moreover, Toyochem will be marketing its BPA-NI solutions under the new brand name Lionova, as the company seeks to expand its position in markets overseas. Traditionally, epoxy resins have been used to line the interiors of metal food and beverage cans. Since epoxy resins are made from Bisphenol A, a potentially endocrine- disrupting substance, epoxy coatings contain small traces of BPA, which is under suspicion
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of causing health issues. As a result, demand for BPA-NI coatings is gathering momentum as government agencies across the globe start to more strictly regulate BPA and even ban its use in food packaging altogether. This trend has resulted in a shift toward BPA-free packaging in end-use industries. To meet with this rise in demand, Toyochem researchers in Japan applied its polymer design technology to formulate can coatings that do not contain BPA and have very low free monomer content. Designed with human and environmental health in mind, Lionova coating compositions are based on FDA (21 CFR175.300). In evaluation testing, styrene concentrations were below the detection limit of 0.001 µg/L. Lionova systems offer excellent bendability, durability, suitability with a wide range of container types, and retort resistance levels needed to meet the performance requirements of today’s canmakers.
The acrylic-based LIONOVA-500 for can end coating is a soap-free emulsion suitable for applications that require high hygiene or high- temperature sterilisation. They demonstrate exceptional feathering resistance during the shaping process relative to BPA-epoxy coatings, achieving values around 80µm at a dry film weight of 110 mg/dm2. The polyester-based LIONOVA-600 formulation is composed of optimal functional groups that help to form an optimum cross-linking structure, resulting in exceptional formability and barrier properties based on the polyester’s molecular weight and glass transition point. These coatings are highly flexible and durable with 3T-Bend ERV of 0.1 mA at 110 mg/dm2. Rounding out the Lionova BPA-NI lineup is the LIONOVA-100 acrylic spray lacquer for DI cans, and the LIONOVA-300 acrylic internal spray.
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toyo-chem.com/en/ 30 March 2021
convertermag.com
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