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US 5,700,570 AGranted
Composite construction material
AssigneeK2, Inc.
InventorMohamed A. Fahmy
Life of this patent
Estimating the term…
Abstract
A composite construction material comprises consecutive laminae of a kraft linerboard optionally coated with a sealant, a layer of polymer, a plurality of superposed layers of water-resistant paperboard adhered together, a second layer of polymer, and a second layer of kraft linerboard.
Claims16
A composite construction material, comprising:
- a first layer of kraft linerboard, optionally having a sealant on a surface thereof;
- a plurality of superposed layers of water-resistant paperboard, said layers of water-resistant paperboard adhered together by means of layers of an adhesive positioned intermediate and contacting said layers of water-resistant paperboard;
- a first polymer layer intermediate and adhered to the first layer of kraft linerboard and the plurality of superposed layers of water-resistant paperboard;
- a second layer of kraft linerboard;
- and
- a second polymer layer intermediate and adhered to the second layer of kraft linerboard and the plurality of superposed layers of water-resistant paperboard.
3 more elements
A composite construction material, comprising:
- a first layer of kraft linerboard having a weight of about 62 pounds per thousand square feet, said first layer of kraft linerboard optionally having a water-based sealant on a surface thereof;
- a plurality of superposed layers of water-resistant paperboard, said layers of water-resistant paperboard adhered together by means of layers of a polyvinyl alcohol adhesive positioned intermediate and contacting said layers of water-resistant paperboard;
- a first layer of low density polyethylene having a weight of about 5 pounds per thousand square feet intermediate and adhered to the first layer of kraft linerboard and the plurality of superposed layers of water-resistant paperboard;
- a second layer of kraft linerboard having a weight of about 62 pounds per thousand square feet;
- and
- a second layer of low density polyethylene having a weight of about 5#/MSF intermediate and adhered to the second layer of kraft linerboard and the plurality of superposed layers of water-resistant paperboard.
3 more elements
Dependencies are inferred from the claim text.