Polymer sheet, method of installing and producing same
AssigneeCorex Plastices (Australia) Pty Ltd
InventorsSimon Douglas Whiteley, Edward Philip Bacon
Life of this patent
Estimating the term…
Abstract
A polymer sheet adapted to attach to a material body such as a ceiling of a geological cavity and provide protective cover. The sheet comprises: a webbing portion defining a plurality of primary openings; and two margin portions extending along opposite edges of the sheet on either side of the webbing portion along a length of the sheet, each margin portion defining a plurality of secondary openings, wherein the margin portions are angled relative to the webbing portion.
Claims20
An extruded polymer sheet adapted to attach to a ceiling of a geological cavity and provide protective cover, the extruded polymer sheet comprising:
- a central webbing portion defining a plurality of primary openings and a flat webbing plane;
- and
- two margin portions extending along opposite edges of the extruded polymer sheet on either side of the central webbing portion along a length of the extruded polymer sheet, each margin portion defining a plurality of secondary openings, wherein the primary openings and the secondary openings are arranged in lines across a width of the extruded polymer sheet, the lines being repeated along the length of the extruded polymer sheet to generate a longitudinally and laterally extending array, and wherein a separation between the secondary openings is greater than an additional separation between the primary openings.
An extruded polymer sheet adapted to attach to a ceiling of a geological cavity and provide protective cover, the extruded polymer sheet comprising:
- a central webbing portion defining a plurality of primary openings and a flat webbing plane;
- a first margin portion and a second margin portion, the first margin portion and the second margin portion respectively extending along opposite longitudinal edges of the extruded polymer sheet on either side of the central webbing portion along a length of the extruded polymer sheet, each of the first margin portion and the second margin portion defining a respective plurality of secondary openings, wherein a separation between the secondary openings is greater than an additional separation between the primary openings;
- and
- a first intermediate portion and a second intermediate portion, the first intermediate portion extending between the first margin portion and the central webbing portion and the second intermediate portion extending between the second margin portion and the central webbing portion.
A method of producing a polymer sheet adapted to attach to a ceiling of a geological cavity and provide protective cover, the method comprising:
- extruding a polymer material into a sheet with a length and a width;
- forming a plurality of primary openings in a webbing portion and a plurality of secondary openings in each of a first margin portion and a second margin portion,
- wherein the first margin portion and the second margin portion extend along opposite edges of the sheet on either side of the webbing portion along the length of the sheet,
- wherein the primary openings and the secondary openings are arranged in lines repeated along the length of the sheet to generate a longitudinally and laterally extending array,
- wherein a separation between the secondary openings is greater than an additional separation between the primary openings;
- and
- shaping the sheet such that the first margin portion and the second margin portion are parallel to the webbing portion.
Dependencies are inferred from the claim text.