CA3134821A1 - System for and method of manufacturing hemp products - Google Patents
System for and method of manufacturing hemp products Download PDFInfo
- Publication number
- CA3134821A1 CA3134821A1 CA3134821A CA3134821A CA3134821A1 CA 3134821 A1 CA3134821 A1 CA 3134821A1 CA 3134821 A CA3134821 A CA 3134821A CA 3134821 A CA3134821 A CA 3134821A CA 3134821 A1 CA3134821 A1 CA 3134821A1
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- CA
- Canada
- Prior art keywords
- hemp
- product
- manufactured
- strands
- adhesive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 244000025254 Cannabis sativa Species 0.000 title claims abstract description 301
- 235000005607 chanvre indien Nutrition 0.000 title claims abstract description 301
- 235000009120 camo Nutrition 0.000 title claims abstract description 298
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 title claims abstract description 297
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 title claims abstract description 297
- 239000011487 hemp Substances 0.000 title claims abstract description 297
- 238000004519 manufacturing process Methods 0.000 title claims description 10
- 239000000853 adhesive Substances 0.000 claims abstract description 103
- 230000001070 adhesive effect Effects 0.000 claims abstract description 103
- 239000002023 wood Substances 0.000 claims abstract description 17
- 238000009408 flooring Methods 0.000 claims abstract description 7
- 239000002983 wood substitute Substances 0.000 claims abstract 5
- 239000000835 fiber Substances 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 18
- 241000196324 Embryophyta Species 0.000 claims description 15
- 239000000839 emulsion Substances 0.000 claims description 15
- 239000000243 solution Substances 0.000 claims description 14
- 240000004308 marijuana Species 0.000 claims description 11
- 239000002803 fossil fuel Substances 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 5
- 235000008697 Cannabis sativa Nutrition 0.000 claims description 4
- 229920006397 acrylic thermoplastic Polymers 0.000 claims description 4
- SLGWESQGEUXWJQ-UHFFFAOYSA-N formaldehyde;phenol Chemical compound O=C.OC1=CC=CC=C1 SLGWESQGEUXWJQ-UHFFFAOYSA-N 0.000 claims description 4
- 239000012948 isocyanate Substances 0.000 claims description 4
- 150000002513 isocyanates Chemical class 0.000 claims description 4
- 125000005395 methacrylic acid group Chemical group 0.000 claims description 4
- 229920001568 phenolic resin Polymers 0.000 claims description 4
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 4
- ISXSCDLOGDJUNJ-UHFFFAOYSA-N tert-butyl prop-2-enoate Chemical compound CC(C)(C)OC(=O)C=C ISXSCDLOGDJUNJ-UHFFFAOYSA-N 0.000 claims description 4
- 229920000877 Melamine resin Polymers 0.000 claims description 3
- 241000209140 Triticum Species 0.000 claims description 3
- 235000021307 Triticum Nutrition 0.000 claims description 3
- 229920001807 Urea-formaldehyde Polymers 0.000 claims description 3
- 244000213578 camo Species 0.000 claims description 3
- HANVTCGOAROXMV-UHFFFAOYSA-N formaldehyde;1,3,5-triazine-2,4,6-triamine;urea Chemical compound O=C.NC(N)=O.NC1=NC(N)=NC(N)=N1 HANVTCGOAROXMV-UHFFFAOYSA-N 0.000 claims description 3
- ODGAOXROABLFNM-UHFFFAOYSA-N polynoxylin Chemical compound O=C.NC(N)=O ODGAOXROABLFNM-UHFFFAOYSA-N 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 229920002689 polyvinyl acetate Polymers 0.000 claims description 3
- 239000011118 polyvinyl acetate Substances 0.000 claims description 3
- 229920001909 styrene-acrylic polymer Polymers 0.000 claims description 3
- IVJISJACKSSFGE-UHFFFAOYSA-N formaldehyde;1,3,5-triazine-2,4,6-triamine Chemical compound O=C.NC1=NC(N)=NC(N)=N1 IVJISJACKSSFGE-UHFFFAOYSA-N 0.000 claims 2
- 239000000446 fuel Substances 0.000 claims 2
- 238000010438 heat treatment Methods 0.000 claims 2
- 239000004566 building material Substances 0.000 abstract description 3
- 239000000047 product Substances 0.000 description 64
- 235000011624 Agave sisalana Nutrition 0.000 description 12
- 244000198134 Agave sisalana Species 0.000 description 12
- 238000001723 curing Methods 0.000 description 8
- 229920001187 thermosetting polymer Polymers 0.000 description 8
- 238000009835 boiling Methods 0.000 description 7
- 238000010000 carbonizing Methods 0.000 description 7
- 238000001035 drying Methods 0.000 description 5
- 239000003570 air Substances 0.000 description 4
- 239000012080 ambient air Substances 0.000 description 4
- 230000000007 visual effect Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- 241000894007 species Species 0.000 description 3
- 235000000346 sugar Nutrition 0.000 description 3
- 150000008163 sugars Chemical class 0.000 description 3
- 238000007548 Janka hardness test Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 210000002615 epidermis Anatomy 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000003306 harvesting Methods 0.000 description 2
- 238000007731 hot pressing Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 210000003491 skin Anatomy 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 235000010469 Glycine max Nutrition 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 208000013201 Stress fracture Diseases 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 150000001242 acetic acid derivatives Chemical class 0.000 description 1
- 238000003339 best practice Methods 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009313 farming Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000011121 hardwood Substances 0.000 description 1
- 238000013007 heat curing Methods 0.000 description 1
- 229940056960 melamin Drugs 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000011120 plywood Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
- B27N3/18—Auxiliary operations, e.g. preheating, humidifying, cutting-off
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N1/00—Pretreatment of moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/02—Manufacture of substantially flat articles, e.g. boards, from particles or fibres from particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/04—Manufacture of substantially flat articles, e.g. boards, from particles or fibres from fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
- B27N3/10—Moulding of mats
- B27N3/14—Distributing or orienting the particles or fibres
- B27N3/143—Orienting the particles or fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
- B27N3/20—Moulding or pressing characterised by using platen-presses
- B27N3/203—Moulding or pressing characterised by using platen-presses with heating or cooling means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4266—Natural fibres not provided for in group D04H1/425
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/58—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/03—3 layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/04—4 layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/20—All layers being fibrous or filamentary
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/06—Vegetal fibres
- B32B2262/062—Cellulose fibres, e.g. cotton
- B32B2262/065—Lignocellulosic fibres, e.g. jute, sisal, hemp, flax, bamboo
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
- B32B2307/202—Conductive
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/536—Hardness
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/72—Density
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/732—Dimensional properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/732—Dimensional properties
- B32B2307/734—Dimensional stability
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2419/00—Buildings or parts thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2479/00—Furniture
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2607/00—Walls, panels
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Textile Engineering (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
A manufactured hemp product comprising a plurality of adhesively bonded and pressed hemp strands where the majority of the hemp strands are of generally the same length and comprise a naturally-occurring, generally elongate internal structure extending generally along one axis of the strand that has been at least partially laterally broken and at least permeated by an adhesive. The hemp strands are oriented roughly parallel to one another along their length. The manufactured hemp product comprises an amount of adhesive between about 5% to about 49% by weight. The manufactured hemp product can be used as a wood substitute in terms of appearance and performance. The manufactured hemp products may have aesthetic and structural qualities that are suitable for high traffic, high visibility applications such as boards, blocks, beams, panels, flooring, furniture, building materials and other wood products.
Description
SYSTEM FOR AND METHOD OF MANUFACTURING HEMP PRODUCTS
TECHNICAL FIELD
[0001] Disclosed herein are manufactured hemp products and methods of making the same. More particularly, the manufactured hemp products described herein may include hemp composite boards, blocks, beams, panels, flooring, furniture, building materials and other wood products wherein the grain of the product is displayed, as in some composite or wood products.
BACKGROUND
TECHNICAL FIELD
[0001] Disclosed herein are manufactured hemp products and methods of making the same. More particularly, the manufactured hemp products described herein may include hemp composite boards, blocks, beams, panels, flooring, furniture, building materials and other wood products wherein the grain of the product is displayed, as in some composite or wood products.
BACKGROUND
[0002] Today's increased demand for wood products, coupled with unbridled deforestation, has led to a scarce supply of timber sources. Many species of majestic rainforest trees are endangered or are approaching extinction. In addition to a reduced supply of trees, many trees traditionally coveted for their wood take many years to reach maturity. Thus, even if these trees are replanted, it will take many years to replenish the supply. This scarcity of natural wood may be particularly noticeable in those industries that rely on the particular aesthetic and structural qualities of the natural wood, such as the wood flooring, furniture, building materials or other wood industries.
[0003] Substitutes for natural wood can include, for example, plywood, particle board, and the like. However, many of these substitutes are derived from natural wood but do not have visual or technical attributes of natural wood. Furthermore, they may not address the issue of finding and maintaining a sustainable raw material supply for the future.
SUMMARY
SUMMARY
[0004] A method and system have been developed that allows for the use of hemp stalks from Cannabis Sativa, Cannabis Indica or Cannabis Ruderalis plants (as well as plants with similar properties) which can be grown as replenishable plants indoors (or agricultural crops outdoors) to replace hardwood used in flooring, furniture and other wooden products. These products derived from hemp stalks provide the same or better hardness, stability, and density.
[0005] One embodiment of the method of preparing hemp stalks for use in a manufactured hemp product may include beginning with a hemp stalk piece from a cannabis plant. As one of ordinary skill in the art would appreciate, a hemp stalk consists of an outer layer (typically called the Epidermis), a first inner layer (typically called the Bast Fiber, a second inner layer (typically called the Hurd or Core) and a hollow inner core. The bast fiber has proven to be able to carry low level electrical current. The hemp stalk piece is generally rectangular or cylinder and it may have a thickness in the range of about 0.1 mm to about 75 mm. The hemp stalk piece typically includes an internal surface area which is .. accessible from the outside of the hemp stalk piece. The hemp stalk piece generally has a naturally-occurring, generally elongate internal structure extending along one axis of the hemp stalk piece.
[0006] In harvesting, the hemp stalk is cut above the roots and the branches are (typically) removed. In outdoor agricultural crops, a farming combine is used to cut off the top .. (including leaves and flower (buds)) of the plant to be used for other products. The stalk is then allowed to dry (or ret) in the field. In replenishable indoor plants the top of the plant including leaves and flower (buds) are removed. This provides an elongate hemp stalk piece from the cannabis plant. The internal volume of the hemp strand is capable of absorbing fluid accessible from the outside of the hemp stalk piece.
Additionally, breaking at least a portion of the naturally-occurring generally elongate internal structure parallel to the axis increases the surface area of the hemp stalk piece such that the ability of the hemp piece to absorb an adhesive solution increases by at least 10% than the surface area of the hemp stalk piece prior to breaking at least a portion of the internal structure. In outdoor agricultural crops, the stalks are cut down and bailed/bundled breaking at least a portion of .. the naturally occurring generally elongated internal structure of the hurd.
Additionally, breaking at least a portion of the naturally-occurring generally elongate internal structure parallel to the axis increases the surface area of the hemp stalk piece such that the ability of the hemp piece to absorb an adhesive solution increases by at least 10% than the surface area of the hemp stalk piece prior to breaking at least a portion of the internal structure. In outdoor agricultural crops, the stalks are cut down and bailed/bundled breaking at least a portion of .. the naturally occurring generally elongated internal structure of the hurd.
[0007] In some embodiments the hemp stalk piece is cut to size after which the hemp stalk piece may be deskinned, split and crushed to further open the internal lignocellulosic plant structure. Different methods of harvesting or bailing may deskin, split, and crush the hemp stalk piece into a hemp strand. This optional step is typically based on visual observation .. and the adhesive application. In addition, boiling the hemp stalk pieces in H20 or in a mild H202 solution or carbonizing with pressured steam may occur. The hemp strands are dried then submersed in a fossil fuel or agricultural based adhesive solution for about 0.5-20 minutes. Anyone skilled in the art will understand, there are multiple suitable methods of adhesive application, including roller, submersion, waterfall, etc.
Subsequent to this .. submersion, the hemp strands are air or heat dried to a second total water content of between about 5% to about 20% by weight for thermal set adhesives. If a cold set adhesive is going to be used, the hemp strands are not typically dried beyond filed drying (retting). The hemp strand includes adhesive in the range of between about 5%
to about 49% by weight. Typically, the adhesive-applied strands for thermoset adhesives are dried, but adhesive-applied strands are not dried for cold set adhesives.
Subsequent to this .. submersion, the hemp strands are air or heat dried to a second total water content of between about 5% to about 20% by weight for thermal set adhesives. If a cold set adhesive is going to be used, the hemp strands are not typically dried beyond filed drying (retting). The hemp strand includes adhesive in the range of between about 5%
to about 49% by weight. Typically, the adhesive-applied strands for thermoset adhesives are dried, but adhesive-applied strands are not dried for cold set adhesives.
[0008] Subsequent steps normally include placing the adhesive-applied strands into a mold either parallel or perpendicular to one another with a lid; and applying pressure to the hemp strands. When thermoset adhesives are used, heat is typically applied to the mold while pressure is applied (hot press). Alternately, a lid can be used to maintain pressure on the strands during adhesive curing. For cold set adhesives (Cold Press) while no heat is required, pressure is applied or, alternatively, a lid can be used to maintain pressure during adhesive curing.
[0009] Once the applied adhesives are cured, the pressure is released (or the mold lids are opened) and the manufactured hemp product is removed. The short ends of the manufactured product are trimmed/cut to form a uniform edge. The manufactured hemp product is then allowed to stabilize in ambient air conditions. The manufactured hemp product is then in the form of board, block beam or panel and is allowed to stabilize in ambient atmosphere conditions. Afterward, the manufactured hemp product is then dried with air or heat to obtain the required moisture content.
[0010] The manufactured hemp product is comprised of a plurality of hemp stalk strands from a cannabis (or similar) plant less than one year old and typically has a density in the range of about 200 kg/m3 to about 900 kg/m3 with the desired amount of adhesive. The density and hardness of the final product is a result of: (1) the extent to which the lignocellulosic structure is opened, (2) the density of the adhesive solution, (3) the amount of time that the hemp stalk strands are submersed, and (4) the pressure applied to the mold.
[0011] The manufactured hemp product comprises an amount of hemp strands greater than 50% and an amount of adhesive in the range of 5% to about 49%. The manufactured hemp product has a generally uniform density in the range of between about 600 kg/m3 to about 1200 kg/m3; and the manufactured hemp product has an aesthetically pleasing appearance.
The manufactured hemp product has a dimensional stability coefficient of change that is at least 10% more stable than the original hemp stalk according to the dimensional stability coefficient of change. Test results have shown the manufactured hemp product to have an improved hardness over natural hemp stalks according to the Janka Hardness Test. When hemp products are connected together (example, click flooring) the bast fiber from one board can pass currents to the adjoining board bast fiber allowing a current to flow throughout the entire installation.
BRIEF DESCRIPTION OF THE DRAWINGS
The manufactured hemp product has a dimensional stability coefficient of change that is at least 10% more stable than the original hemp stalk according to the dimensional stability coefficient of change. Test results have shown the manufactured hemp product to have an improved hardness over natural hemp stalks according to the Janka Hardness Test. When hemp products are connected together (example, click flooring) the bast fiber from one board can pass currents to the adjoining board bast fiber allowing a current to flow throughout the entire installation.
BRIEF DESCRIPTION OF THE DRAWINGS
[0012] The drawings are meant to illustrate the principles of the invention and do not limited the scope of the invention. The above-mentioned features and objects of the present disclosure will become more apparent with reference to the following description taken in conjunction with the accompanying drawings wherein like reference numerals denote like elements in which:
[0013] FIG. 1 is a process flow chart illustrating one embodiment of a system described herein.
[0014] FIG. 2A is a drawing of an outdoor hemp plant.
[0015] FIG. 2B is a drawing of an indoor hemp plant.
[0016] FIG. 3 is a drawing of a hemp stalk being cut/trimmed to length.
[0017] FIG. 4 is a drawing of a hemp stalk piece being skinned, split and crushed to create a hemp strand (degree of split, skin and crushed varies or may be omitted).
[0018] FIG. 5 is a drawing of a hemp strand being boiled or carbonized (optional).
[0019] FIG. 6A is a drawing of a first dried hemp strand.
[0020] FIG. 6B is a magnified view of the dried hemp strand of FIG. 6A.
[0021] FIG. 7 is a drawing of the adhesive application to hemp strands.
[0022] FIG. 8A is a drawing of the adhesive applied hemp strands being loaded into molds in parallel.
[0023] FIG. 8B is a drawing of the adhesive applied hemp strands being loaded into molds in cross directional layers.
[0024] FIG. 9A is a drawing of the molded hemp strands being pressed into a block.
[0025] FIG. 9B is a drawing of the molded hemp strands being pressed into a panel.
[0026] FIG. 10A is a drawing of the mold being opened and the pressed hemp strands comprising a monolithic hemp piece trimmed.
[0027] FIG. 10B is a drawing of the mold being opened and the pressed hemp strands being trimmed.
[0028] FIG. 11A is a drawing of the monolithic hemp piece being cut into a block.
[0029] FIG. 11B is a drawing of the monolithic hemp piece being cut into boards.
[0030] FIG. 11C is a drawing of the monolithic hemp piece being cut into panels.
[0031] FIG. 11D is a drawing of the monolithic hemp piece being cut into boards.
[0032] FIG. 12Ais a drawing of a manufactured hemp product.
[0033] FIG. 12B is a drawing of a hot press cross directional panel.
[0034] FIG. 12C is a drawing of is a hot press cross directional board.
DETAILED DESCRIPTION
DETAILED DESCRIPTION
[0035] Figure 1 illustrates a process flow chart of one embodiment of the present invention. The flow chart begins with a hemp plant in Step 105. As one of ordinary skill in the art would appreciate, a hemp stalk consists of an outer layer (typically called the Epidermis), a first inner layer (typically called the Bast Fiber, a second inner layer (typically called the Hurd or Core) and a hollow inner core. In Step 110 the hemp stalk is trimmed/cut to length. In Step 115, the cut lengths of the hemp stalk piece (stalks and petiole) are skinned, split and/or crushed; creating hemp strands. Each of these steps (i.e., the skinned, split and/or crushed steps) is optional. In Step 120 the hemp strands may be boiled or carbonized. In step 125 the boiled/carbonized/natural hemp strands are dried/stabilized (acclimatized). In Step 130 the first dried hemp strands have resin/glue/adhesive (generally referred to as adhesive) applied. In Step 135 the hemp strands with the adhesive applied are loaded into molds. In Step 140 pressure is applied to the unpressed hemp strands. Pressure can be applied through direct pressure or through the use of a lid. In Step 145 heat is optionally applied to the pressed hemp strands. After Step 140 or Step 145, the adhesive has cured and the heated hemp strands and adhesive have bonded together creating a monolithic molded hemp piece. The monolithic hemp piece is then removed from the mold in Step 150. In Step 155, after the monolithic unmolded hemp piece is allowed to stabilize/rest, it is then cut into boards, blocks, beams or panels.
In step 160 the manufactured hemp product is ready for use for its intended purpose.
In step 160 the manufactured hemp product is ready for use for its intended purpose.
[0036] Figure 2 is a drawing of hemp plants. The manufactured hemp product uses the hemp stalks from Cannabis Sativa, Cannabis Indica or Cannabis Ruderalis plants (as well as plants with similar properties), which can be grown as replenishable hemp plants indoors (Figure 2B) or agricultural hemp plants outdoors (Figure 2A). The agricultural hemp plants shown in Figure 2A can grow up to 2.5 meters in one growing season, which is generally less than one year. Agricultural hemp plants (grown outdoors) (Figure 2A) have been tested to have fiber content of 50-60% with generally elongated stalks. Indoor grown hemp plants (Figure 2B) are usually smaller in height and thinner in stem diameter .. with a fiber content lower than naturally grown outdoor hemp plants (Figure 2A). Each type of hemp plant includes Roots 205, Main Stalk 210, Nodes 215, Internodes 220, Petoile 225, and Fan Leaf 230. Preferably, the manufactured hemp products of the present invention use the Main Stalks 210, but may also incorporate the Nodes 215, Internodes 220 and Petoile 225. Hemp stalk are known to have higher fiber content than many trees species; with research showing standard tree species <50% fiber content with hemp having up to 57% fiber content.
[0037] Figure 3 is a drawing of the hemp stalk being cut/trimmed to length.
Some embodiments disclosed herein are directed to a method of preparing hemp stalks for use in a manufactured hemp product. This embodiment includes providing a hemp stalk piece from a cannabis plant 305, wherein the hemp stalk piece is generally rectangular or cylinder and has a thickness < 75 mm. The internal surface area of the hemp stalk piece is accessible from the outside of the hemp stalk piece, with the hemp stalk piece having a naturally-occurring, generally elongate internal structure extending along one axis of the hemp stalk piece. Cutting the hemp stalk above the roots and removing the Petiole at the Nodes 310, provides an elongate hemp stalk 315 from a, for example, cannabis plant, where the hemp stalk has a length and a width, generally rectangular or cylinder in cross section 320, and has a thickness in the range of between about 0.1 mm to about 75 mm.
Additionally, the internal volume of the hemp stalk is capable of absorbing fluid accessible from the outside of the hemp piece because the hemp stalk piece has a naturally-occurring, generally elongate internal structure extending generally along the length of the hemp stalk piece.
Some embodiments disclosed herein are directed to a method of preparing hemp stalks for use in a manufactured hemp product. This embodiment includes providing a hemp stalk piece from a cannabis plant 305, wherein the hemp stalk piece is generally rectangular or cylinder and has a thickness < 75 mm. The internal surface area of the hemp stalk piece is accessible from the outside of the hemp stalk piece, with the hemp stalk piece having a naturally-occurring, generally elongate internal structure extending along one axis of the hemp stalk piece. Cutting the hemp stalk above the roots and removing the Petiole at the Nodes 310, provides an elongate hemp stalk 315 from a, for example, cannabis plant, where the hemp stalk has a length and a width, generally rectangular or cylinder in cross section 320, and has a thickness in the range of between about 0.1 mm to about 75 mm.
Additionally, the internal volume of the hemp stalk is capable of absorbing fluid accessible from the outside of the hemp piece because the hemp stalk piece has a naturally-occurring, generally elongate internal structure extending generally along the length of the hemp stalk piece.
[0038] Figure 4 is a drawing of a hemp stalk piece 320 being skinned 405, split 415, and crushed 420 to create a hemp stalk strand. A skinned hemp stalk piece is shown by reference number 410. One of ordinary skill in the art would appreciate that the degree of the hemp stalk piece being skinned, split, and/or crushed varies or these processes may be omitted entirely. Some embodiments disclosed herein are directed to a method of preparing hemp stalk for use in a manufactured hemp product that includes a hemp stalk piece from a cannabis plant 310. Splitting 415 at least a portion of the naturally-occurring generally elongate internal structure of the hemp stalk parallel to the axis of the hemp stalk 320 increases by at least 10% than the surface area of the hemp stalk piece prior to breaking at least a portion of the internal structure. The breaking step increases the surface area of the hemp stalk piece thereby increasing the ability of the hemp stalk piece to absorb an additional amount of the adhesive solution. In some embodiments after the hemp stalk piece is cut to size, the skin is removed 405 leaving a hemp stalk piece which is unskinned 410, it is split into strands 415, and/or crushed 425 to further open the internal lignocellulosic plant structure. The optional step of splitting the strand is similar to splitting a log. The optional step of crushing is generally performed through a rolling action. The crushing process results in crushed hemp stalk 420. The amount of splitting, skinning and crushing the hemp stalk piece to create a hemp strand varies in accordance with the required strength and visual appearance of the finished product.
Reducing or eliminating the skinning, splitting and crushing allows less adhesive to penetrate the hemp strand and provides a "more busy" (or more complexed) visual appearance of the final product.
Reducing or eliminating the skinning, splitting and crushing allows less adhesive to penetrate the hemp strand and provides a "more busy" (or more complexed) visual appearance of the final product.
[0039] Figure 5 is a drawing of a hemp strand being boiled or carbonized.
These steps of boiling or carbonizing the hemp strands are optional. Some embodiments disclosed herein are directed to a method of preparing hemp stalk for use in a manufactured hemp product that can include providing a hemp strand. The optional steps of boiling the hemp strand in H20 or a mild H202 (2%) solution will remove natural sugars in the strand creating better adhesive penetration/bonding and a more uniform color to the end product.
Boiling is generally conducted at above 100 C for a minimum of 2 hours. Carbonizing the hemp strand with pressured hot steam above 120 C will darken the color of the end manufactured hemp product by carbonizing the sugars for 2-4 hours to reach required color darkness.
These steps of boiling or carbonizing the hemp strands are optional. Some embodiments disclosed herein are directed to a method of preparing hemp stalk for use in a manufactured hemp product that can include providing a hemp strand. The optional steps of boiling the hemp strand in H20 or a mild H202 (2%) solution will remove natural sugars in the strand creating better adhesive penetration/bonding and a more uniform color to the end product.
Boiling is generally conducted at above 100 C for a minimum of 2 hours. Carbonizing the hemp strand with pressured hot steam above 120 C will darken the color of the end manufactured hemp product by carbonizing the sugars for 2-4 hours to reach required color darkness.
[0040] Figure 6 is a drawing of a hemp strand (after the optional boiling or carbonizing) (Figure 6A) after the drying process which shows individual strands of similar size 605. A
magnified drawing (Figure 6B) indicates stress fractures from the optional crushing process 420. At this point, the hemp stalk strand is dried to a first total water content preferably of less than 20% by weight. Drying the hemp stalk strand can be done by using forced air, heat, sunshine or ambient air conditions. Best practice is using natural elements such as sunshine, but wood drying room, kiln or microwave technology are also acceptable. Boiling the hemp strands is optional after de-skinning/splitting/crushing creates more uniform colors removing some of the green color of the live plant. Adding H202 to the water solution for boiling improves the chemical bonding for phenol formaldehyde adhesives. Carbonizing the hemp strands is optional after cutting splitting/de-skinning. It is the process of pressure steaming the hemp strands to create a darker brown color by carbonizing the sugars in the stalk.
magnified drawing (Figure 6B) indicates stress fractures from the optional crushing process 420. At this point, the hemp stalk strand is dried to a first total water content preferably of less than 20% by weight. Drying the hemp stalk strand can be done by using forced air, heat, sunshine or ambient air conditions. Best practice is using natural elements such as sunshine, but wood drying room, kiln or microwave technology are also acceptable. Boiling the hemp strands is optional after de-skinning/splitting/crushing creates more uniform colors removing some of the green color of the live plant. Adding H202 to the water solution for boiling improves the chemical bonding for phenol formaldehyde adhesives. Carbonizing the hemp strands is optional after cutting splitting/de-skinning. It is the process of pressure steaming the hemp strands to create a darker brown color by carbonizing the sugars in the stalk.
[0041] Figure 7 is a drawing of the adhesive application to the first dried hemp strands.
Some embodiments disclosed herein are directed to a method of preparing hemp stalk for use in a manufactured hemp product that can include providing a hemp strand 605. The hemp strands are submersed in a container 705 full of fossil fuel or agricultural based adhesive solution 710 for between about 0.5-20 minutes. Agricultural based adhesives may include but are not limited to; soy, hemp, wheat or flowers. Petro based adhesives may include but are not limited to; urea formaldehyde, phenol formaldehyde, melamine urea formaldehyde, polyvinyl acetate, polyurethane, emulsion polymeric isocyanates, emulsion and solution acrylics, emulsion and solution styrene-acrylics, emulsion and solution methacrylics, and emulsion and solution styrene-methacrylics, or melamin formaldehyde. Afterward, the hemp strands with applied adhesive is air or heat dried to a second total water content of between about 5% to about 20% by weight for thermal set adhesives. Alternatively, the drying step is eliminated for cold set adhesives. The hemp strand includes adhesive in the range of between about 5% to about 49% by weight.
Some embodiments disclosed herein are directed to a method of preparing hemp stalk for use in a manufactured hemp product that can include providing a hemp strand 605. The hemp strands are submersed in a container 705 full of fossil fuel or agricultural based adhesive solution 710 for between about 0.5-20 minutes. Agricultural based adhesives may include but are not limited to; soy, hemp, wheat or flowers. Petro based adhesives may include but are not limited to; urea formaldehyde, phenol formaldehyde, melamine urea formaldehyde, polyvinyl acetate, polyurethane, emulsion polymeric isocyanates, emulsion and solution acrylics, emulsion and solution styrene-acrylics, emulsion and solution methacrylics, and emulsion and solution styrene-methacrylics, or melamin formaldehyde. Afterward, the hemp strands with applied adhesive is air or heat dried to a second total water content of between about 5% to about 20% by weight for thermal set adhesives. Alternatively, the drying step is eliminated for cold set adhesives. The hemp strand includes adhesive in the range of between about 5% to about 49% by weight.
[0042] Agri based adhesives are derived from natural occurring organic compounds, and are more eco-friendly and the preferred choice by end users for the manufactured hemp product. Cost, technical properties and ease of use sometimes limit the use of these eco-friendly adhesives. Fossil fuel based adhesives are derived from petroleum or other fossil fuels and include curing or crosslinking agents such as isocyanates, phenol, urea, melamine, acrylics, methacrylics, vinyl-functionalized agents, or acetates.
These products are not eco-friendly but typically create a stronger and more cost efficient product.
These products are not eco-friendly but typically create a stronger and more cost efficient product.
[0043] Cold Set Adhesives- can cure at room temperature (5-40 C) and do not require an applied heat source, curing time is generally longer than thermoset adhesives.
These adhesives generally have a higher viscosity and are applied more to the surface of the hemp strands, penetrating the hemp strand cell structure to a lesser degree than the diluted thermoset adhesives. Thermoset Adhesives- cure at higher temperatures (examples UF 70 C and PF 120 C) and require an applied heat source, curing time is generally shorter than cold set adhesives. Thermoset adhesives can be applied via a H20 dilution technique which includes using a 50% diluted adhesive to lower the viscosity in turn increasing the penetration of the plant structure. Following the flooding of the cell structure of the hemp strands the H20 is dried out of the hemp stalk but the adhesive remains clinging to the internal cell structure of the plant. These dried strands will require a heat curing system to trigger chemical bonding in some cases.
These adhesives generally have a higher viscosity and are applied more to the surface of the hemp strands, penetrating the hemp strand cell structure to a lesser degree than the diluted thermoset adhesives. Thermoset Adhesives- cure at higher temperatures (examples UF 70 C and PF 120 C) and require an applied heat source, curing time is generally shorter than cold set adhesives. Thermoset adhesives can be applied via a H20 dilution technique which includes using a 50% diluted adhesive to lower the viscosity in turn increasing the penetration of the plant structure. Following the flooding of the cell structure of the hemp strands the H20 is dried out of the hemp stalk but the adhesive remains clinging to the internal cell structure of the plant. These dried strands will require a heat curing system to trigger chemical bonding in some cases.
[0044] Figure 8A is a drawing of the adhesive applied hemp strands 605 being loaded into molds 805 in a parallel to make a cold press block. Some embodiments disclosed herein are directed to a method of making a manufactured hemp product that can include providing a plurality of hemp strands, and placing the adhesive-applied strands into a mold, where the mold has an interior width greater than the width of an individual adhesive applied hemp strand.
[0045] Figure 8B is a drawing of the adhesive applied hemp strands 605 being loaded into molds 810 in cross directional layers to make a hot press panel. Some embodiments disclosed herein are directed to a method of making a manufactured hemp product that can include providing a plurality of hemp strands, and placing the adhesive-applied strands into a mold, where the mold has an interior width greater than the width of an individual adhesive applied hemp strand.
[0046] Figure 9A is a drawing of the molded hemp strands being cold pressed into a block. Some embodiments disclosed herein are directed to a method of making a manufactured hemp product that can include providing a plurality of adhesive applied hemp strands 905 placed into a mold 805 with a lid 910, using a press 915 and applying pressure 920 to the molded hemp strands in the mold to thereby form a manufactured hemp product. The amount of pressure 920 applied depends on the required density and hardness of the finished product. For thermoset adhesives heat is applied to the mold with pressure still applied or a lid attached to maintain pressure during adhesive curing. For cold set adhesives no heat is required, but pressure remains applied or a lid attached to maintain pressure during adhesive curing.
[0047] Figure 9B is a drawing of the molded hemp strands being hot pressed into a panel.
Some embodiments disclosed herein are directed to a method of making a manufactured hemp product that can include providing a plurality of adhesive applied hemp strands 925 placed into a mold 810 with a lid 930, using a press 935 and applying pressure 940 to the molded hemp strands in the mold to thereby form a manufactured hemp product.
The amount of pressure 940 applied depends on the required density and hardness of the finished product. For thermoset adhesives heat is applied (hot pressing) to the mold with pressure still applied or a lid attached to maintain pressure during adhesive curing. When hot pressing a panel, layering the hemp strands perpendicular to the ones above and below allows for greater stability.
Some embodiments disclosed herein are directed to a method of making a manufactured hemp product that can include providing a plurality of adhesive applied hemp strands 925 placed into a mold 810 with a lid 930, using a press 935 and applying pressure 940 to the molded hemp strands in the mold to thereby form a manufactured hemp product.
The amount of pressure 940 applied depends on the required density and hardness of the finished product. For thermoset adhesives heat is applied (hot pressing) to the mold with pressure still applied or a lid attached to maintain pressure during adhesive curing. When hot pressing a panel, layering the hemp strands perpendicular to the ones above and below allows for greater stability.
[0048] Figure 10A is a drawing of the cold press block mold 805 being opened and the pressed hemp strands being trimmed. Some embodiments disclosed herein are directed to a method of making a manufactured hemp product including hemp strands and a desired amount of adhesive. Once the adhesives are cured, the pressure is released 1005 and the mold lids 910 are opened and the manufactured hemp product is removed 905. The short ends of the manufactured product are trimmed/cut to form a uniform edge. The manufactured hemp product is then allowed to stabilize in ambient air conditions.
[0049] Figure 10B is a drawing of the hot press panel mold 810 being opened and the pressed hemp strands being trimmed. Some embodiments disclosed herein are directed to a method of making a manufactured hemp product including hemp strands and a desired amount of adhesive. Once the adhesives are cured, the pressure is released 1010 and the mold lids 930 are opened and the manufactured hemp product is removed 925. The short ends of the manufactured product are trimmed/cut to form a uniform edge. The manufactured hemp product is then allowed to stabilize in ambient air conditions.
[0050] Figure 11A is a drawing of the monolithic hemp piece 905 being cut into board (Figure 11B), board (Figure 11D), block (Figure 11A) or panel (Figure 11C). A
board is generally 15:1-3:1 (width:height). A block is generally 1:1-1:2 (width:height). A beam is generally 3:1-2:1 (width:height). A panel is generally 16:1-50:1 (width:height). The manufactured hemp product many then be cut, sanded or formed into board, block, beam or panel. Once in board, block, beam or panel shape the product is allowed to stabilize for preferably 2-10 days pending environmental conditions. Fig 11 B is a cold press board and Fig 11D is a hot press board.
board is generally 15:1-3:1 (width:height). A block is generally 1:1-1:2 (width:height). A beam is generally 3:1-2:1 (width:height). A panel is generally 16:1-50:1 (width:height). The manufactured hemp product many then be cut, sanded or formed into board, block, beam or panel. Once in board, block, beam or panel shape the product is allowed to stabilize for preferably 2-10 days pending environmental conditions. Fig 11 B is a cold press board and Fig 11D is a hot press board.
[0051] Figure 12A is a drawing of a manufactured hemp product 1105. Figure 12B
is a hot press cross directional panel. Figure 12 C is a hot press cross directional board. Some embodiments disclosed herein are directed to a manufactured hemp product that can include a plurality of adhesively bonded and pressed hemp strands; where: (1) each of the hemp strands is of generally the same length; (2) each hemp strand comprises a naturally-occurring, generally elongate internal structure extending generally along one axis of the strand that has been at least partially laterally broken and at least partially permeated by an adhesive; (3) the hemp strands are oriented roughly parallel to one another along their length; (4) the manufactured hemp product comprises an amount of adhesive in the range of between about 5% to about 49% by weight; and (5) the manufactured hemp product has a generally uniform density in the range of between about 600 kg/m3 to about 1200 kg/m3. The manufactured hemp product has a dimensional stability coefficient of change that is at least 10% more stable than the original hemp stalk according to the dimensional stability coefficient of change. The manufactured hemp product has a hardness pending adhesive used and density. Test results have shown the manufactured hemp product to have an improved hardness over natural hemp stalks according to the Janka Hardness Test.
is a hot press cross directional panel. Figure 12 C is a hot press cross directional board. Some embodiments disclosed herein are directed to a manufactured hemp product that can include a plurality of adhesively bonded and pressed hemp strands; where: (1) each of the hemp strands is of generally the same length; (2) each hemp strand comprises a naturally-occurring, generally elongate internal structure extending generally along one axis of the strand that has been at least partially laterally broken and at least partially permeated by an adhesive; (3) the hemp strands are oriented roughly parallel to one another along their length; (4) the manufactured hemp product comprises an amount of adhesive in the range of between about 5% to about 49% by weight; and (5) the manufactured hemp product has a generally uniform density in the range of between about 600 kg/m3 to about 1200 kg/m3. The manufactured hemp product has a dimensional stability coefficient of change that is at least 10% more stable than the original hemp stalk according to the dimensional stability coefficient of change. The manufactured hemp product has a hardness pending adhesive used and density. Test results have shown the manufactured hemp product to have an improved hardness over natural hemp stalks according to the Janka Hardness Test.
[0052] Test Results Test Results Natural Hemp Manufactured Hemp Stalk* Product*
Density (kg/m3) Internodes/Petiole 476 748 Main Stalk 502 813 Dimensional Change Co-efficient Internodes/Petiole 0.00190 0.00140 Main Stalk 0.00179 0.00134 Janka Hardness Internodes/Petiole 3.9 PV 6.4 A
Main Stalk 5.5 PF 9.3 *Source 24 week old hemp plant
Density (kg/m3) Internodes/Petiole 476 748 Main Stalk 502 813 Dimensional Change Co-efficient Internodes/Petiole 0.00190 0.00140 Main Stalk 0.00179 0.00134 Janka Hardness Internodes/Petiole 3.9 PV 6.4 A
Main Stalk 5.5 PF 9.3 *Source 24 week old hemp plant
[0053] Some embodiments herein are directed to a manufactured hemp product that can include a plurality of adhesively bonded partially broken hemp strands;
wherein each of the partially broken hemp strands maintains its original structure from an appearance point of view; the majority of the partially broken hemp strands from the stalk are the same length, but pieces from nodes, internodes and petiole may be of varying size;
each partially broken hemp strand comprises a naturally-occurring, generally elongate internal structure extending along the length of the strand that has been at least partially broken and at least partially permeated by the adhesive; the partially broken hemp strands are oriented approximately parallel to one another along their length.
wherein each of the partially broken hemp strands maintains its original structure from an appearance point of view; the majority of the partially broken hemp strands from the stalk are the same length, but pieces from nodes, internodes and petiole may be of varying size;
each partially broken hemp strand comprises a naturally-occurring, generally elongate internal structure extending along the length of the strand that has been at least partially broken and at least partially permeated by the adhesive; the partially broken hemp strands are oriented approximately parallel to one another along their length.
[0054] In some instances hemp fiber has been shown to conduct electric current. In addition other conductive fibers can be added to the manufactured hemp product to conduct current more efficiently as desired. Amount of conductive fibers added being at a minimum to conduct current from one board to the next on the board ends in an installation.
Claims
PCT/US2020/024771 1 1. A manufactured hemp product comprising:
2 a plurality of adhesively bonded and pressed hemp strands, wherein:
3 each of said hemp strands is of generally the same length and each of said 4 hemp strands includes bast fiber and hurd;
each of said hemp strands comprises a naturally-occurring, generally 6 elongate internal structure extending generally along one axis of the strand 7 that has been at least partially laterally broken and at least partially 8 permeated by an adhesive;
9 said hemp strands are oriented roughly parallel to one another along their length;
11 said manufactured hemp product comprises an amount of adhesive in the 12 range of 5% by weight to 49% by weight and said manufactured hemp 13 product comprises an amount of hemp strands of greater than 50% by 14 weight;
said manufactured hemp product has a generally uniform density in the 16 range of 600 kg/m3 to 1200 kg/m3; and 17 said manufactured hemp product can be used as a wood substitute in 18 appearance and technical properties.
1 2. The manufactured hemp product in claim 1, wherein said manufactured hemp 2 product has a dimensional stability coefficient of change that is at least 10% more 3 stable than an original hemp stalk according to the dimensional stability coefficient of 4 change.
1 3. The manufactured hemp product of claim 1, wherein said manufactured hemp 2 product has a hardness greater than 5 kN according to the Janka Hardness scale.
1 4. The manufactured hemp product of claim 1, wherein one or more of the 2 partially broken hemp strands are derived from replenishable indoor plant or 3 agricultural outdoor plant grown and harvested in less than 1 year.
1 5. The manufactured hemp product of claim 1, wherein one or more of the 2 partially broken hemp strands is from hemp stalks that have a density in the range of 3 200 kg/m3 to 900 kg/m3.
1 6. The manufactured hemp product of claim 1, wherein said hemp strand is from 2 a stem/stalk from at least one of Cannabis Sativa, Cannabis Indica and Cannabis 3 Ruderalis.
1 7. The manufactured hemp product of claim 1, wherein said manufactured hemp 2 product is a block, board, beam or panel and said manufactured hemp product can be 3 used in a finished product such as flooring, furniture and other wood products.
1 8. The manufactured hemp block or panel of claim 1 wherein said hemp fiber or 2 added conductive fibers conducts current such as but not limited to electric or 3 temperature for practical uses including but not limited to heating, color change, or 4 programable smart wood.
1 9. The manufactured hemp product of claim 1 wherein said adhesive is an 2 agricultural based adhesives suitable for the product of at least one of soy based 3 adhesives, hemp based adhesive, a wheat based adhesive, and a flower based 4 adhesive.
1 10. The manufactured hemp product of claim 1 wherein said adhesive is a fossil 2 fuel based adhesive from at least one of urea formaldehyde, phenol formaldehyde, 3 melamine urea formaldehyde, polyvinyl acetate, polyurethane, emulsion polymeric 4 isocyanates, emulsion and solution acrylics, emulsion and solution styrene-acrylics, emulsion and solution methacrylics, and emulsion and solution styrene-methacrylics, 6 and melamine formaldehyde.
1 11. The manufactured hemp product of claim 1 wherein said adhesive includes 2 both said agricultural based adhesive said fossil fuel based adhesive.
1 12. A manufactured hemp product comprising:
2 a plurality of adhesively bonded partially broken hemp strands wherein each 3 partially broken hemp strand includes both bast fiber and hurd, wherein:
4 each of said partially broken hemp strands maintains its original structure 5 from an appearance point of view;
6 each partially broken hemp strand comprises a naturally-occurring, 7 generally elongate internal structure extending along the length of the strip 8 that has been at least partially broken and at least partially permeated by an 9 adhesive;
said partially broken hemp strands are oriented approximately parallel to 11 one another along their length;
12 said manufactured hemp product comprises an amount of adhesive in the 13 range of 5% by weight to 49% by weight and an amount of hemp stalk 14 strands of greater than 50% by weight;
said manufactured hemp product has a generally uniform density in the 16 range of 600 kg/m3 to 1200 kg/m3; and 17 said manufactured hemp product can be used as a wood substitute in 18 appearance and technical properties.
1 13. The manufactured hemp product in claim 12, wherein said manufactured 2 hemp product has a dimensional stability coefficient of change that is at least 10%
3 more stable than an original hemp stalk according to the dimensional stability 4 coefficient of change.
1 14. The manufactured hemp product of claim 12, wherein said manufactured 2 hemp product has a hardness greater than 5 kN according to the Janka Hardness scale.
1 15. The manufactured hemp product of claim 12, wherein at least one of said 2 partially broken hemp strands are from replenishable indoor plant or agricultural 3 outdoor crop grown and harvested in less than 1 year.
1 16. The manufactured hemp product of claim 12, wherein one or more of said 2 partially broken hemp strands is from hemp stalk that has a density in the range of 200 3 kg/m3 to 900 kg/m3.
1 17. The manufactured hemp product of claim 12, wherein said hemp strands are 2 from the stalk, petiole, nodes and internodes from at least one of Cannabis Sativa, 3 Cannabis Indica and Cannabis Ruderalis.
1 18. The manufactured hemp product of claim 12, wherein said manufactured 2 hemp product is a block, board, beam or panel and said manufactured hemp product 3 can be used in a finished products such as flooring, furniture and other wood products.
1 19. The manufactured hemp product of claim 12 wherein said adhesive is an 2 agricultural based adhesives suitable for the product of at least one of soy based 3 adhesives, hemp based adhesive, a wheat based adhesive, and a flower based 4 adhesive.
1 20. The manufactured hemp product of claim 12 wherein said adhesive is a fossil 2 fuel based adhesive from at least one of urea formaldehyde, phenol formaldehyde, 3 melamine urea formaldehyde, polyvinyl acetate, polyurethane, emulsion polymeric 4 isocyanates, emulsion and solution acrylics, emulsion and solution styrene-acrylics, emulsion and solution methacrylics, and emulsion and solution styrene-methacrylics, 6 and melamine formaldehyde, 1 21. The manufactured hemp product of claim 12 wherein said adhesive includes 2 both said agricultural based adhesive said fossil fuel based adhesive.
1 22. The manufactured hemp block or panel of claim 12 wherein said hemp fiber or 2 added conductive fibers conducts current such as but not limited to electric or 3 temperature for practical uses including but not limited to heating, color change, or 4 programable smart wood.
1 23. A process of manufacturing a manufactured hemp product comprising:
2 cutting a number of hemp strands to generally the same length wherein each of 3 said hemp strands comprises a naturally-occurring, generally elongate internal 4 structure extending generally along one axis of the strand; and each of said 5 hemp strands includes both bast fiber and hurd wherein said step of cutting 6 includes at least partially laterally breaking said hemp strands;
7 orientating said number of hemp strands to be roughly parallel to one another 8 along their length;
9 bonding said number of hemp strands together by adding an amount of adhesive such that said manufactured hemp product includes 5% by weight to 11 49% by weight of said adhesive and includes an amount of hemp strands of 12 greater than 50% by weight;
13 permeating at least some of the broken hemp strands with said adhesive;
14 pressing said broken hemp strands and adhesive together;
15 creating said manufactured hemp product which has a generally uniform 16 density in the range of 600 kg/m3 to 1200 kg/m3; and where said 17 manufactured hemp product can be used as a wood substitute in appearance 18 and technical properties.
1 24. A process of manufacturing a manufactured hemp product comprising:
2 cutting a number of partially broken hemp strands that contain both bast fiber 3 and hurd to generally the same length wherein each of said partially broken 4 hemp strands comprises a naturally-occurring, generally elongate internal structure extending generally along one axis of the strand that has been at least 6 partially laterally broken and at least partially permeated by an adhesive, and 7 wherein said partially broken hemp strands include:
8 permeating at least some of the broken hemp strands with said adhesive;
9 orientating said number of hemp strands to be roughly parallel to one another along their length;
11 bonding said number of hemp strands together by adding an amount of 12 adhesive such that said manufactured hemp product includes 5% by weight to 13 49% by weight of said adhesive and includes an amount of hemp strands of 14 greater than 50% by weight; and creating said manufactured hemp product which has a generally uniform 16 density in the range of 600 kg/m3 to 1200 kg/m3; and where said 17 manufactured hemp product can be used as a wood substitute in appearance 18 and technical properties.
2 a plurality of adhesively bonded and pressed hemp strands, wherein:
3 each of said hemp strands is of generally the same length and each of said 4 hemp strands includes bast fiber and hurd;
each of said hemp strands comprises a naturally-occurring, generally 6 elongate internal structure extending generally along one axis of the strand 7 that has been at least partially laterally broken and at least partially 8 permeated by an adhesive;
9 said hemp strands are oriented roughly parallel to one another along their length;
11 said manufactured hemp product comprises an amount of adhesive in the 12 range of 5% by weight to 49% by weight and said manufactured hemp 13 product comprises an amount of hemp strands of greater than 50% by 14 weight;
said manufactured hemp product has a generally uniform density in the 16 range of 600 kg/m3 to 1200 kg/m3; and 17 said manufactured hemp product can be used as a wood substitute in 18 appearance and technical properties.
1 2. The manufactured hemp product in claim 1, wherein said manufactured hemp 2 product has a dimensional stability coefficient of change that is at least 10% more 3 stable than an original hemp stalk according to the dimensional stability coefficient of 4 change.
1 3. The manufactured hemp product of claim 1, wherein said manufactured hemp 2 product has a hardness greater than 5 kN according to the Janka Hardness scale.
1 4. The manufactured hemp product of claim 1, wherein one or more of the 2 partially broken hemp strands are derived from replenishable indoor plant or 3 agricultural outdoor plant grown and harvested in less than 1 year.
1 5. The manufactured hemp product of claim 1, wherein one or more of the 2 partially broken hemp strands is from hemp stalks that have a density in the range of 3 200 kg/m3 to 900 kg/m3.
1 6. The manufactured hemp product of claim 1, wherein said hemp strand is from 2 a stem/stalk from at least one of Cannabis Sativa, Cannabis Indica and Cannabis 3 Ruderalis.
1 7. The manufactured hemp product of claim 1, wherein said manufactured hemp 2 product is a block, board, beam or panel and said manufactured hemp product can be 3 used in a finished product such as flooring, furniture and other wood products.
1 8. The manufactured hemp block or panel of claim 1 wherein said hemp fiber or 2 added conductive fibers conducts current such as but not limited to electric or 3 temperature for practical uses including but not limited to heating, color change, or 4 programable smart wood.
1 9. The manufactured hemp product of claim 1 wherein said adhesive is an 2 agricultural based adhesives suitable for the product of at least one of soy based 3 adhesives, hemp based adhesive, a wheat based adhesive, and a flower based 4 adhesive.
1 10. The manufactured hemp product of claim 1 wherein said adhesive is a fossil 2 fuel based adhesive from at least one of urea formaldehyde, phenol formaldehyde, 3 melamine urea formaldehyde, polyvinyl acetate, polyurethane, emulsion polymeric 4 isocyanates, emulsion and solution acrylics, emulsion and solution styrene-acrylics, emulsion and solution methacrylics, and emulsion and solution styrene-methacrylics, 6 and melamine formaldehyde.
1 11. The manufactured hemp product of claim 1 wherein said adhesive includes 2 both said agricultural based adhesive said fossil fuel based adhesive.
1 12. A manufactured hemp product comprising:
2 a plurality of adhesively bonded partially broken hemp strands wherein each 3 partially broken hemp strand includes both bast fiber and hurd, wherein:
4 each of said partially broken hemp strands maintains its original structure 5 from an appearance point of view;
6 each partially broken hemp strand comprises a naturally-occurring, 7 generally elongate internal structure extending along the length of the strip 8 that has been at least partially broken and at least partially permeated by an 9 adhesive;
said partially broken hemp strands are oriented approximately parallel to 11 one another along their length;
12 said manufactured hemp product comprises an amount of adhesive in the 13 range of 5% by weight to 49% by weight and an amount of hemp stalk 14 strands of greater than 50% by weight;
said manufactured hemp product has a generally uniform density in the 16 range of 600 kg/m3 to 1200 kg/m3; and 17 said manufactured hemp product can be used as a wood substitute in 18 appearance and technical properties.
1 13. The manufactured hemp product in claim 12, wherein said manufactured 2 hemp product has a dimensional stability coefficient of change that is at least 10%
3 more stable than an original hemp stalk according to the dimensional stability 4 coefficient of change.
1 14. The manufactured hemp product of claim 12, wherein said manufactured 2 hemp product has a hardness greater than 5 kN according to the Janka Hardness scale.
1 15. The manufactured hemp product of claim 12, wherein at least one of said 2 partially broken hemp strands are from replenishable indoor plant or agricultural 3 outdoor crop grown and harvested in less than 1 year.
1 16. The manufactured hemp product of claim 12, wherein one or more of said 2 partially broken hemp strands is from hemp stalk that has a density in the range of 200 3 kg/m3 to 900 kg/m3.
1 17. The manufactured hemp product of claim 12, wherein said hemp strands are 2 from the stalk, petiole, nodes and internodes from at least one of Cannabis Sativa, 3 Cannabis Indica and Cannabis Ruderalis.
1 18. The manufactured hemp product of claim 12, wherein said manufactured 2 hemp product is a block, board, beam or panel and said manufactured hemp product 3 can be used in a finished products such as flooring, furniture and other wood products.
1 19. The manufactured hemp product of claim 12 wherein said adhesive is an 2 agricultural based adhesives suitable for the product of at least one of soy based 3 adhesives, hemp based adhesive, a wheat based adhesive, and a flower based 4 adhesive.
1 20. The manufactured hemp product of claim 12 wherein said adhesive is a fossil 2 fuel based adhesive from at least one of urea formaldehyde, phenol formaldehyde, 3 melamine urea formaldehyde, polyvinyl acetate, polyurethane, emulsion polymeric 4 isocyanates, emulsion and solution acrylics, emulsion and solution styrene-acrylics, emulsion and solution methacrylics, and emulsion and solution styrene-methacrylics, 6 and melamine formaldehyde, 1 21. The manufactured hemp product of claim 12 wherein said adhesive includes 2 both said agricultural based adhesive said fossil fuel based adhesive.
1 22. The manufactured hemp block or panel of claim 12 wherein said hemp fiber or 2 added conductive fibers conducts current such as but not limited to electric or 3 temperature for practical uses including but not limited to heating, color change, or 4 programable smart wood.
1 23. A process of manufacturing a manufactured hemp product comprising:
2 cutting a number of hemp strands to generally the same length wherein each of 3 said hemp strands comprises a naturally-occurring, generally elongate internal 4 structure extending generally along one axis of the strand; and each of said 5 hemp strands includes both bast fiber and hurd wherein said step of cutting 6 includes at least partially laterally breaking said hemp strands;
7 orientating said number of hemp strands to be roughly parallel to one another 8 along their length;
9 bonding said number of hemp strands together by adding an amount of adhesive such that said manufactured hemp product includes 5% by weight to 11 49% by weight of said adhesive and includes an amount of hemp strands of 12 greater than 50% by weight;
13 permeating at least some of the broken hemp strands with said adhesive;
14 pressing said broken hemp strands and adhesive together;
15 creating said manufactured hemp product which has a generally uniform 16 density in the range of 600 kg/m3 to 1200 kg/m3; and where said 17 manufactured hemp product can be used as a wood substitute in appearance 18 and technical properties.
1 24. A process of manufacturing a manufactured hemp product comprising:
2 cutting a number of partially broken hemp strands that contain both bast fiber 3 and hurd to generally the same length wherein each of said partially broken 4 hemp strands comprises a naturally-occurring, generally elongate internal structure extending generally along one axis of the strand that has been at least 6 partially laterally broken and at least partially permeated by an adhesive, and 7 wherein said partially broken hemp strands include:
8 permeating at least some of the broken hemp strands with said adhesive;
9 orientating said number of hemp strands to be roughly parallel to one another along their length;
11 bonding said number of hemp strands together by adding an amount of 12 adhesive such that said manufactured hemp product includes 5% by weight to 13 49% by weight of said adhesive and includes an amount of hemp strands of 14 greater than 50% by weight; and creating said manufactured hemp product which has a generally uniform 16 density in the range of 600 kg/m3 to 1200 kg/m3; and where said 17 manufactured hemp product can be used as a wood substitute in appearance 18 and technical properties.
Applications Claiming Priority (3)
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US16/364,089 | 2019-03-25 | ||
US16/364,089 US10843374B2 (en) | 2016-10-28 | 2019-03-25 | System for and method of manufacturing hemp products |
PCT/US2020/024771 WO2020198393A1 (en) | 2019-03-25 | 2020-03-25 | System for and method of manufacturing hemp products |
Publications (1)
Publication Number | Publication Date |
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CA3134821A1 true CA3134821A1 (en) | 2020-10-01 |
Family
ID=72609478
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CA3134821A Pending CA3134821A1 (en) | 2019-03-25 | 2020-03-25 | System for and method of manufacturing hemp products |
Country Status (5)
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EP (1) | EP3941700A4 (en) |
CN (1) | CN113874183A (en) |
AU (1) | AU2020245546A1 (en) |
CA (1) | CA3134821A1 (en) |
WO (1) | WO2020198393A1 (en) |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
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US6197414B1 (en) * | 1997-12-25 | 2001-03-06 | Matsushita Electric Works, Ltd. | Fiberboard and manufacturing method thereof |
ATE245082T1 (en) * | 1999-05-18 | 2003-08-15 | Alberta Res Council | COMPOSITE PANELS MADE OF HEMP FIBERS |
JP3608457B2 (en) * | 1999-12-14 | 2005-01-12 | トヨタ自動車株式会社 | Wood-like molded body |
US6841231B1 (en) * | 2000-08-10 | 2005-01-11 | Masonite Corporation | Fibrous composite article and method of making the same |
AU2007316938B2 (en) * | 2006-11-09 | 2011-10-06 | Oci Nitrogen B.V. | Process for the preparation of a panel |
CN202378127U (en) * | 2011-02-28 | 2012-08-15 | 段梦麟 | Plant stem artificial wood |
US9988763B2 (en) * | 2014-11-12 | 2018-06-05 | First Quality Tissue, Llc | Cannabis fiber, absorbent cellulosic structures containing cannabis fiber and methods of making the same |
US9702082B2 (en) * | 2015-08-13 | 2017-07-11 | 9Fiber, Inc. | Methods for producing raw materials from plant biomass |
US10843374B2 (en) * | 2016-10-28 | 2020-11-24 | Gregory A. Wilson | System for and method of manufacturing hemp products |
US10240285B2 (en) * | 2016-10-28 | 2019-03-26 | Gregory A. Wilson | System for and method of manufacturing hemp products |
CN107662268A (en) * | 2016-12-31 | 2018-02-06 | 北京林业大学 | A kind of flaxen fiber enhancing orientation wood-plastic composite particleboard and its manufacture method |
CN108656300A (en) * | 2018-04-11 | 2018-10-16 | 中国人民解放军62023部队 | A kind of Chinese Kenaf Core Buffer green ecological plank and preparation method thereof |
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2020
- 2020-03-25 CA CA3134821A patent/CA3134821A1/en active Pending
- 2020-03-25 WO PCT/US2020/024771 patent/WO2020198393A1/en unknown
- 2020-03-25 CN CN202080038778.5A patent/CN113874183A/en not_active Withdrawn
- 2020-03-25 EP EP20779256.5A patent/EP3941700A4/en active Pending
- 2020-03-25 AU AU2020245546A patent/AU2020245546A1/en active Pending
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AU2020245546A1 (en) | 2022-02-24 |
EP3941700A1 (en) | 2022-01-26 |
CN113874183A (en) | 2021-12-31 |
EP3941700A4 (en) | 2022-12-21 |
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