SHEETLIKE COMPOSITE, ESPECIALLY FOR PRODUCTION OF DIMENSIONALLY STABLE FOOD OR DRINK PRODUCT CONTAINERS, COMPRISING A POLYMER LAYER P HAVING AN L VALUE

The invention relates to a sheetlike composite comprising, as mutually superposed layers in a direction from an outer face of the sheetlike composite to an inner face of the sheetlike composite, a)a carrier layer, and b)a barrier layer; wherein the sheetlike composite additionally includes a polymer layer P comprising a first polymer; wherein the polymer layer P has an L value in the L*a*b* colorspace within a range from 30 to 56. The invention further relates to methods of producing a sheetlike composite, a container precursor and a closed container and to the aforementioned method products;to a container precursor and a closed container each including at least one sheetlike region of the sheetlike composite; to uses of the sheetlike composite for production of a food or drink product container and in a microwave oven; and to uses of compositions for production of a sheetlike composite for a food or drink product container. 本发明涉及种片状复合材料，其包括在从片状复合材料的外表面到片状复合材料的内表面的方向上相互叠置的层，a)载体层，和b)阻挡层；其中片状复合材料另外包括含有第聚合物的聚合物