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Glossary

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The Group

Glossary

Glossary by alphabetic list :

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Glossary by branch :

  • Breathable film

    a polyolefin film into which coated ground calcium carbonate (FilmlinkTM) is incorporated during the production process. This creates micropores that allow air to circulate without affecting the film’s watertightness.

  • Calcined kaolin

    kaolin modified through very high (700-1,200ºC) temperatures. Calcination improves whiteness and changes the chemistry, making the kaolin less hydrophilic and reducing electrical conductivity

  • China clay

    also known as kaolin, is a white soft plastic clay derived from the decomposition of granite or similar rock. Most kaolin is wet refined to produce a range of products to improve both physical and chemical properties to meet specific customer applications. The Group has mineral reserves in all three high-quality kaolin mining regions in the world: Cornwall, UK; Georgia, USA; and the Amazon delta in Brazil.

  • Coating

    after the paper web is completely formed and dried, coating mixtures containing kaolin, GCC, PCC, additives and binders are applied to the paper surface in a thin layer to produce coated paper. These coatings change the properties of the paper to make it glossier, more opaque and brighter.

  • Diatomite

    a silica-based mineral formed from the fossilized remains of microscopic aquatic plants. It is used as a filtration agent to clarify beer, fruit juices, some food products and wine, and produce pharmaceuticals or and chemicals. It is also used as a mineral filler, mainly in paints, and as an anti-adhesiveblock for plasticspolymer films.

  • Engineered pigments

    this refers to kaolin and GCC products where the particle size distribution and shape has been modified (naturally or synthetically) to be substantially different from traditional products

  • Fillers

    in the paper industry, fillers are added at the start of the paper making process and become trapped in the fibrous structure of the paper web as it forms. Kaolin, GCC and PCC fillers impart unique properties to paper, improving notably appearance and printability. Fillers are also used in a veriety of industrial applications such as paints, plastics, rubbers, etc.

  • Kaolin

    Also known as china clay, is a white soft plastic clay derived from the decomposition of granite or similar rock. Most kaolin is wet refined to produce a range of products to improve both physical and chemical properties to meet specific customer applications. The Group has mineral reserves in all three high-quality kaolin mining regions in the world: Cornwall, UK; Georgia, USA; and the Amazon delta in Brazil.

  • Perlite

    a volcanic rock containing 2-5% water which, when heated quickly, turns to steam, dilating its rock matrix to up to 20 times its initial volume. The result is a lightweight material with a high contact surface. It is used to filter beverages. It also has significant outlets in construction (ceiling slabsjoint compound) and horticulture (off-ground cultivationhydroponics).

  • Vermiculite

    Hydrated mica that expands greatly when heated, this mineral is used in particular for insulation and horticulture

  • White pigments

    kaolin, GCC and PCC are used in the paper industry as a filler – to give a smooth texture and whiteness to the sheet and to help it rapidly and uniformly absorb ink during the printing process – and as a coating product to give the paper a smooth, bright and glossy surface for high quality printing. Kaolin and GCC are also used as high performance extenders in many types of paint, where they improve opacity, scrub resistance and as a partial replacement for expensive prime pigments.

Imerys is based in over 50 countries and has 250 industrial sites.

2016 AR
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