Forest residue based rigid foam products and processes of manufacture
AssigneePlantee Bioplastics Inc.
InventorsPRAPHULLA ., RICHARD CHEN
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Abstract
A process for manufacturing a rigid foam product includes processing a forest residue to obtain fibers having a mesh size of at most 5 mm mesh and an aspect ratio of between 0.5:1 and 20:1; preparing a slurry comprising the fibers, water, a foaming agent, and a polymer additive; foaming the slurry to yield a wet foam; and drying the wet foam to yield a rigid foam product.
Claims42
A process for manufacturing a rigid foam product, comprising:
- a. processing a forest residue to obtain fibers having a mesh size of at most 5 mm mesh and an aspect ratio of between about 0.5:1 and 20:1;
- b. preparing a slurry comprising the fibers, water, a foaming agent, and a polymer additive;
- c. foaming the slurry to yield a wet foam;
- and
- d. drying the wet foam to yield a rigid foam product.
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A rigid foam product, comprising:
- a. at least about 60 wt % of a forest residue fibers having a mesh size of at most 5 mm mesh and an aspect ratio of between about 0.5:1 and 20:1;
- b. between about 0.1 wt % and about 15 wt % of a polymer additive;
- and
- c. between about 0.1 wt % and about 7.5 wt % of a foaming agent;
- wherein the rigid foam product has a density of between about 40 and about 150 kg/m3.
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Dependencies are inferred from the claim text.