Method for manufacturing a plastic drain sheet, and plastic drain sheet
AssigneeSKZ - Testing GmbH
InventorHelmut ZANZINGER
Life of this patent
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Abstract
The invention describes a method for manufacturing a plastic drain sheet, and a plastic drain sheet. For the purpose of manufacture, a sheet-like main body having a first surface and a second surface, spaced apart therefrom by a base sheet thickness, is provided. Grooves are introduced into the first surface and mating grooves are introduced into the second surface. The mating grooves and the grooves cross one another at crossing points. Through-openings between the grooves and the mating grooves are formed at the crossing points.
Claims20
A method for manufacturing a plastic drain sheet, the method comprising haying the steps of:
- providing a sheet-like main body having a first surface and a second surface, spaced apart from the first surface by a base sheet thickness of the main body,
- introducing grooves into the first surface of the main body,
- introducing mating grooves into the second surface of the main body, wherein the mating grooves and the grooves cross one another at crossing points (9), and
- forming through-openings between the grooves and the mating grooves in the region of the crossing points to complete the plastic drain sheet.
A plastic drain sheet, comprising
- a sheet-like main body having a first surface and a second surface, spaced apart from the first surface by a base sheet thickness of the main body,
- grooves introduced into the first surface of the main body,
- mating grooves introduced into the second surface of the main body, wherein the mating grooves and the grooves cross one another at crossing points, and
- through-openings between the grooves and the mating grooves in the region of the crossing points.
The plastic drain sheet as claimed in, comprising a cover layer on at least one of the surfaces of the main body.
Dependencies are inferred from the claim text.