Płyta obornicka is the colloquial name for an insulated sandwich panel. It does not denote a single thickness or a single type of insulation. Such a panel combines facings with a core that contributes to its properties. Before purchase, the intended use, cross-section and method of joining must be identified. A familiar name alone is not enough to select the material. A typical insulated sandwich panel for building enclosure has two facings and an insulating core bonded to them. In many variants the facings are made of protected steel. The core may be mineral wool, foam or polystyrene. The individual layers work together. It is not simply loose insulation inserted between two sheets.