Adding mineral products (natural or calcined kaolins, natural or precipitated calcium carbonates, etc.) improves the quality of cellulose fiber products. Imerys specialties provide the texture and appearance properties required by each packaging category. They also improve efficiency in manufacturer production processes for cardboard boxes and packaging, reducing costs and ensuring better environmental protection.
Filler mineral products made from kaolin and calcium carbonates are added to the cellulose fiber at the earliest stages of the production process. They give the final packing material texture, opacity, whiteness, and printability. They reduce the limited moisture level of the pulp and limit the need for drying. Production is accelerated and drying time reduced, all sources of energy savings. Mineral filler additives are therefore economical alternatives that improve packaging quality.
Talc contributes to the manufacturing process by absorbing organic impurities contained in the packaging. It thereby increases the whiteness of recycled paper. By replacing chemical solutions in the packaging production line, this mineral specialty is an environmentally friendly alternative.
Coatings are applied to the packaging surface to obtain the smooth surface needed for brightness and printability. High premium is placed by brand owners and retailers on packaging that can effectively communicate the brand image and positioning of their products to the end consumer.
In light of these requirements, Imerys is closely collaborating with leading brand owners and packaging converters to develop high performance coating formulations for paper-based packaging that enhance the surface and functional quality of paper & board based packaging.
Imerys has developed range of mineral-rich, ready-for-use, water-based coating solutions for fibre-based packaging industry – both for food and non-food segments. Key application areas covered by our coatings are Moisture Vapour barrier, Oil & Grease barrier, Water barrier and Mineral Oil barrier.
These ground-breaking barrier coating solutions allow paper-based packaging to meet surface quality requirements in terms of printability, smoothness, gloss, brightness and opacity; and also to meet functional requirements in terms of barrier, glueability, and strength. Use of Imerys formulated coating solutions provide a more environmentally-friendly alternative compared to use of wax, fluorochemicals, or petrochemical-based polymers.
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