Composite material with coating material

摘要

A composite material includes a carrier material, wherein the carrier material is coated on a first surface with a first coating material and on a second surface with a second coating material, the composite material has links of coating material which run from the first surface of the carrier material to the second surface of the carrier material, and the links of coating material start from 1% to 90% of at least one of the surfaces of the carrier material. A method includes producing a composite material of this type.

主权项

1. A method for the continuous production of a composite material, comprising the process steps:
furnishing a web-shaped carrier material in a melt roller calender arrangement, comprising at least a first coating calender; furnishing a first coating material and converting the first coating material into a molten state at a temperature above its softening temperature; producing a molten web of the first coating material; guiding the web of the first coating material still being in the molten state together with the web-shaped carrier material on a first surface of the carrier material through a nip of the first coating calender, whereby the first coating material is applied to the first surface of the carrier material and, due to a pressure exerted in the nip of the first coating calender, the first coating material and the carrier material undergo an integral connection; furnishing a second coating material and converting the second coating material into a molten state at a temperature above its softening temperature; producing a molten web of the second coating material; and guiding the web of the second coating material still being in the molten state together with the web-shaped carrier material on a second surface of the carrier material through a nip of a second coating calender, whereby the second coating material is applied to the second surface of the carrier material and, due to a pressure exerted in the nip of the second coating calender, the second coating material and the carrier material undergo an integral connection, wherein: the temperature of the first coating material and/or the second coating material and the pressure in the nip of the first and/or second coating calender are adjusted such that the first coating material and/or the second coating material flows from one surface of the carrier material to the other surface of the carrier material through the carrier material; links are thereby formed inside the carrier material and a starting area of the links is formed, which start from the first surface of the carrier material; and the starting area accounts for 1 to 90% of the area of the first surface measured at a penetration depth of 0.1 mm inside the carrier material.