Biodegradable and biocompatible agricultural mulch and method of preparing same
First Claim
Patent Images
1. An agricultural mulch comprising:
- a sheet of paper;
said sheet having at least one face coated with a layer of polylactide, wherein said layer is deposited on to said sheet by a hot extrusion process such that when said layer has solidified, the layer weighs between about 2 g/m2 and 15 g/m2, to provide an agricultural mulch that is both biodegradable and biocompatible and which does not exhibit a high gloss.
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Accused Products
Abstract
The mulch comprises a sheet of paper having a thickness between 2 and 4 mils and a basis weight between about 40 g/m2 and 60 g/m2. The sheet has at least one face coated with a layer of polylactide, which is used in an amount such that it weighs between about 2 g/m2 and 15 g/m2. The preparation is carried out by depositing on the sheet an amount of a hot extruded liquid layer of polylactide such that when it solidifies, it weighs between about 2 g/m2 and 15 g/m2, and allowing the layer to solidify and adhere to the sheet, whereby forming the mulch.
12 Citations
18 Claims
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1. An agricultural mulch comprising:
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a sheet of paper; said sheet having at least one face coated with a layer of polylactide, wherein said layer is deposited on to said sheet by a hot extrusion process such that when said layer has solidified, the layer weighs between about 2 g/m2 and 15 g/m2, to provide an agricultural mulch that is both biodegradable and biocompatible and which does not exhibit a high gloss. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of preparing a biodegradable and biocompatible agricultural mulch which comprises:
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providing a sheet of paper; depositing on said sheet by a hot extrusion process an amount of a liquid layer of polylactide such that when said layer solidifies, said layer weighs between about 2 g/m2 and 15 g/m2 ; and allowing said layer to solidify and adhere to said sheet to provide an agricultural mulch that is both biodegradable and biocompatible and which does not exhibit a high gloss. - View Dependent Claims (12)
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13. A method of improving agricultural production comprising:
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providing an agricultural mulch comprising a sheet of paper having at least one face coated with a layer of polylactide, such that said agricultural mulch is both biodegradable and biocompatible; placing said agricultural mulch on the ground to provide a growth zone for plants. - View Dependent Claims (14)
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15. An agricultural mulch comprising:
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a sheet of paper; said sheet having at least one face coated with a layer of polylactide, wherein said layer is deposited on to said sheet by a hot extrusion process such that when said layer has solidified, the layer weighs between about 2 g/m2 and 15 g/m2, to provide an agricultural mulch that is both biodegradable and biocompatible, does not exhibit a high gloss and is capable of installation on the ground with a mechanical unrolling device. - View Dependent Claims (16, 17)
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18. A method of preparing a biodegradable and biocompatible agricultural mulch which comprises:
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providing a sheet of paper; depositing on said sheet by a hot extrusion process an amount of a liquid layer of polylactide such that when said layer solidifies, said layer weighs between about 2 g/m2 and 15 g/m2 ; and allowing said layer to solidify and adhere to said sheet to provide an agricultural mulch that is both biodegradable and biocompatible, does not exhibit a high gloss, and is capable of installation on the ground with a mechanical unrolling device.
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Specification