Introduced unique BPA free Internal Coatings on Metal Cans alternative to epoxy coating by Toyochem

Bisphenol-A, non-intent (BPA-NI)

The Toyochem Co., Ltd., the polymers and coatings subsidiary of Japan’s Toyo Ink Group, has launched a unique Bisphenol-A non-intent (BPA-NI) internal coatings for metal beverage bottles and cans. Based on acrylic emulsion and polyester mastics, the new BPA-NI interior sprays and coil layers for stay-on tab (SOT) ends are specifically formulated to reach the required performance results while addressing BPA-related health and food security concerns from controls and consumers alike. 

Lionova TIN CAN coating

Further, Toyochem will be marketing its BPA-NI solutions under the new brand name Lionova, seeking to increase its place in overseas markets.

Alternative to Epoxy Coating

Traditionally, the epoxy coating has been used to line the interiors of metal food and refreshment cans. Since epoxy resins are built from Bisphenol A, a potentially endocrine-disrupting object, epoxy coatings contain slight traces of BPA, which is below suspicion of causing health issues. 

Why should we choose Lionova coating?

As a decision, demand for BPA-NI coatings is choosing momentum as government agencies across the globe origin to more strictly regulate BPA and even ban its use in food packaging altogether. This course has resulted in a shift toward BPA-free packaging in end-use manufacturers.

To meet this increase in demand, Toyochem researchers in Japan implemented its different polymer design technology to formulate can provide coatings that do not contain BPA and have shallow free monomer content. 


Created with human and environmental health in mind, Lionova layer compositions are based on FDA (21 CFR175.300). In evaluation testing, styrene observations were below the detection limit of 0.001 µg/L. It methods offer superior bendability, durability, suitability with a broad range of container types, and retort resistance levels needed to meet the achievement specifications of today’s canmakers.

Lionova – Acrylic

The acrylic-based LIONOVA-500 for the end layer is a soap-free emulsion suitable for high hygiene or high-temperature sterilization applications. They demonstrate outstanding feathering resistance during the shaping process relative to BPA-epoxy layers, reaching values nearby 80µm at a hard film weight of 110 mg/dm2.

High Performace during Sterilization

The high-performance polyester-based LIONOVA-600 formulation includes optimal functional groups that help produce an optimum cross-linking structure, resulting in outstanding formability and preventive properties based on the polyester’s molecular weight and glass development point. These coatings are intensely manageable and long-lasting with 3T-Bend ERV of 0.1 mA at 110 mg/dm2.

Spinning out the Lionova BPA-NI lineup is the LIONOVA-100 acrylic spray lacquer for DI cans, which shows excellent spray coverage at high speeds and good flavor properties. Toyochem offers the LIONOVA-300 acrylic internal spray with excellent bendability and sprays coverage reliability for screw processing applications for the bottle can make interiors.

“We are happy to present to the world the latest BPA-NI internal food-contact layers for metal packaging,” said Yoshimoto Nakajima, Division Director, Packaging and Industrial Division Toyochem Co., Ltd. “The Lionova name originates from the Latin “nova,” meaning “new” combined with “lion,” the famous mascot of the Toyo Ink Group. With the rebranded Lionova lineup, we intend to develop our presence in Europe and North America markets, where BPA non-intent solutions are in huge demand, particularly with all major brands. Lionova solutions can offer brand owners a novel alternative to epoxy-based liners, while meeting critical mechanical and local regulatory requirements.”

Top 11 food packaging innovations so far – 2021

Vihaan Nagal

संवेष्टन अभियान्ता | Packaging Engineer | Verpackung Ingenieur *Free time blogger *Believe in packaging reform (say naa to orthodox packaging) My life lies between degradable and non-degradable material.

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