Sig Technology Ag

Sig Services Ag

Roland Bothor

Mike Duisken

Markus Raue

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* colour space 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.

Sheetlike composite, especially for production of dimensionally stable food or drink product containers, comprising a polymer layer P having an L value

The present invention relates generally to a planar composite including, as a layer sequence, a first PE blend layer, a carrier layer, a barrier layer, and a further PE blend layer. The first PE blend layer or the further PE blend layer in each case includes in a range of from 10 to 50 wt. %, in each case based on the blend, a first LDPEa, and a further LDPEt to the extent of at least 50 wt. %, in each case based on the blend. The present invention furthermore relates to a process for the production of the planar composite, a container which surrounds an interior and comprises at least one such planar composite, and a process for the production of the container including the steps of provision of the planar composite of the abovementioned layer construction, folding, joining and optionally filling and closing of the container.

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Aachen, Germany

Roland Bothor