Polymer sheet, method of installing and producing same
AssigneeCorex Plastics (Australia) Pty Ltd
InventorsSimon Douglas Whiteley, Edward Philip Bacon
Life of this patent
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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
A polymer sheet adapted to attach to a ceiling of a geological cavity and provide protective cover, the sheet comprising:
- 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,
- wherein the sheet is shaped such that the margin portions are angled out of a webbing plane defined by the webbing portion and the sheet defines elongate creases between the webbing portion and each margin portion,
- wherein the elongate creases form an obtuse angle between the webbing portion and either of the margin portions in a range of 140° to 160°.
A polymer sheet adapted to attach to a ceiling of a geological cavity and provide protective cover, the sheet comprising:
- 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,
- wherein the sheet comprises a plurality of webbing portions and adjacent webbing portions are separated by a wider web portion extending between the margin portions,
- wherein the dimension of the wider web portion is greater than the largest dimension of the openings.
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, wherein the sheet comprises a plurality of webbing portions;
- forming a plurality of primary openings in at least one of the webbing portions and forming a plurality of secondary openings in each of a first and second margin portion,
- wherein the first and second margin portion extend along opposite edges of the sheet on either side of the webbing portions along the length of the sheet,
- wherein adjacent webbing portions are separated by a wider web portion extending between the margin portions, and
- wherein the dimension of the wide web portion is greater than the largest dimension of the openings;
- and
- shaping the sheet such that the first and second margin portion are angled relative to the webbing portions.
A polymer sheet adapted to attach to a ceiling of a geological cavity and provide protective cover, the sheet comprising:
- a plurality of webbing portions located adjacent to each other, each webbing portion defining a plurality of primary openings, wherein a first separation divides adjacent primary openings;
- and
- two margin portions extending along opposite edges of the sheet on either side of the webbing portions along a length of the sheet, each margin portion defining a plurality of secondary openings, wherein adjacent webbing portions are separated by a wider web portion extending between the margin portions, and wherein the dimension of the wider web portion is greater than the largest dimension of the first separation between the primary openings.
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, wherein each sheet comprises a plurality of webbing portions located adjacent to each other;
- forming a plurality of primary openings in a webbing portion and a plurality of secondary openings in each of a first and second margin portion, wherein the first and second margin portion extend along opposite edges of the sheet on either side of the webbing portion along the length of the sheet;
- wherein a first separation divides adjacent primary openings, wherein adjacent webbing portions are separated by a wider web portion extending between the margin portions, and wherein the dimension of the wider web portion is greater than the largest dimension of the first separation between the primary openings.
Dependencies are inferred from the claim text.