WO2014107767A1 - Composite boards comprising cellulosic plant material - Google Patents
Composite boards comprising cellulosic plant material Download PDFInfo
- Publication number
- WO2014107767A1 WO2014107767A1 PCT/AU2014/000015 AU2014000015W WO2014107767A1 WO 2014107767 A1 WO2014107767 A1 WO 2014107767A1 AU 2014000015 W AU2014000015 W AU 2014000015W WO 2014107767 A1 WO2014107767 A1 WO 2014107767A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- resin
- plant material
- cellulosic
- cellulosic plant
- wood
- Prior art date
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- OEGYSQBMPQCZML-UHFFFAOYSA-M azanium;copper(1+);carbonate Chemical compound [NH4+].[Cu+].[O-]C([O-])=O OEGYSQBMPQCZML-UHFFFAOYSA-M 0.000 description 1
- PCUXAGHYTREZMN-UHFFFAOYSA-M azanium;copper(1+);diacetate Chemical compound [NH4+].[Cu+].CC([O-])=O.CC([O-])=O PCUXAGHYTREZMN-UHFFFAOYSA-M 0.000 description 1
- 239000010905 bagasse Substances 0.000 description 1
- 235000013871 bee wax Nutrition 0.000 description 1
- 229940092738 beeswax Drugs 0.000 description 1
- 239000012166 beeswax Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 229910021538 borax Inorganic materials 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229960000846 camphor Drugs 0.000 description 1
- 229930008380 camphor Natural products 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 239000011093 chipboard Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 125000005442 diisocyanate group Chemical group 0.000 description 1
- 235000011180 diphosphates Nutrition 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 229930182470 glycoside Natural products 0.000 description 1
- 150000002338 glycosides Chemical class 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 238000003621 hammer milling Methods 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 150000002632 lipids Chemical class 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- 235000011147 magnesium chloride Nutrition 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 150000003891 oxalate salts Chemical class 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 239000001814 pectin Substances 0.000 description 1
- 229920001277 pectin Polymers 0.000 description 1
- 235000010987 pectin Nutrition 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 235000018102 proteins Nutrition 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 239000002516 radical scavenger Substances 0.000 description 1
- 235000003499 redwood Nutrition 0.000 description 1
- 229930182490 saponin Natural products 0.000 description 1
- 150000007949 saponins Chemical class 0.000 description 1
- 235000017709 saponins Nutrition 0.000 description 1
- 230000009919 sequestration Effects 0.000 description 1
- 239000004328 sodium tetraborate Substances 0.000 description 1
- 235000010339 sodium tetraborate Nutrition 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 125000000185 sucrose group Chemical group 0.000 description 1
- 150000008163 sugars Chemical class 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 239000001117 sulphuric acid Substances 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 150000003505 terpenes Chemical class 0.000 description 1
- 235000007586 terpenes Nutrition 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
- 239000000341 volatile oil Substances 0.000 description 1
- 235000020234 walnut Nutrition 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- 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
- B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
- B32B21/02—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board the layer being formed of fibres, chips, or particles, e.g. MDF, HDF, OSB, chipboard, particle board, hardboard
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
- D21J1/00—Fibreboard
- D21J1/04—Pressing
-
- 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
- B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
- B32B21/04—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B21/042—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material of wood
-
- 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
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
- D21J1/00—Fibreboard
- D21J1/06—Drying
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
- D21J1/00—Fibreboard
- D21J1/08—Impregnated or coated fibreboard
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
- D21J1/00—Fibreboard
- D21J1/10—After-treatment
- D21J1/14—Conditioning
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
- E04C2/10—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products
- E04C2/16—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products of fibres, chips, vegetable stems, or the like
-
- 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
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/02—Composition of the impregnated, bonded or embedded layer
- B32B2260/021—Fibrous or filamentary layer
- B32B2260/023—Two or more 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
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/04—Impregnation, embedding, or binder material
- B32B2260/046—Synthetic resin
-
- 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
-
- 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
-
- 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
- B32B2307/40—Properties of the layers or laminate having particular optical properties
- B32B2307/402—Coloured
- B32B2307/4026—Coloured within the layer by addition of a colorant, e.g. pigments, dyes
-
- 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
- B32B2307/728—Hydrophilic
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/02—Flooring or floor layers composed of a number of similar elements
- E04F15/10—Flooring or floor layers composed of a number of similar elements of other materials, e.g. fibrous or chipped materials, organic plastics, magnesite tiles, hardboard, or with a top layer of other materials
- E04F15/102—Flooring or floor layers composed of a number of similar elements of other materials, e.g. fibrous or chipped materials, organic plastics, magnesite tiles, hardboard, or with a top layer of other materials of fibrous or chipped materials, e.g. bonded with synthetic resins
Definitions
- the present invention relates to composite boards such as particle and fibre boards that comprise cellulosic plant material derived from woody plants and non-wood plants and mixtures thereof. Methods of making the composite boards are also provided.
- Standard wood based particle and fibre boards are commonly used building materials.
- the wood used to make particle and fibre boards typically comes from trees, such as Pinus radiata. Such trees take years of cultivation before they can be harvested for use and plantation operations require large investment in land and running costs such as machinery and transport. Furthermore, often branches and bark are discarded and not, used in the manufacture of particle board because of their high mineral content.
- Blends of virgin wood and recycled wood reduce the cost of manufacture of particle boards.
- recycled wood has often been treated with chemicals such as stains or preservatives which make them more difficult to use in the manufacture of particle boards.
- Different species of wood also include varying amounts of organic compounds such as lipids, alkaloids, waxes, proteins, phenolics, sugars, pectins, mucilages, gums, resins, terpenes, starches, glycosides, saponins and essential oils and inorganic compounds such as silicates, phosphates, carbonates, sulfates and oxalates. These compounds may affect the amount of resin required and also other optional additives, such as waxes, when manufacturing the particle board.
- particle and fibre boards have been made with other sources of cellulose fibre, such as agricultural biomass including corn stover, rice straw, wheat straw, switch grass, and sugar cane bagasse.
- agricultural biomass including corn stover, rice straw, wheat straw, switch grass, and sugar cane bagasse.
- many of these particle and fibre boards require the use of expensive iesms and do not meet the required standard for use in structural applications in construction. They also often are not suitable for applications where nails or screws are required.
- the present invention is predicated in part on the discovery that cellulose plant material treated with a hydrophilic substance may be used to produce particle and fibre boards that meet Australian Standards for structural use in construction and are suitable for use with fixing methods using nails and screws.
- a composite board comprising:
- the composite board is a particle board or fibre board such, as medium-density fibre board or high-density fibre board.
- the cellulosic plant material is obtained from woody plants such, as trees, recovered or recycled wood or may be non-wood cellulosic plant material, or mixtures thereof.
- the cellulosic plant material is derived from woody plants.
- the cellulosic plant material is derived from recovered or recycled wood.
- the cellulosic plant material is non-wood cellulosic plant material.
- the cellulosic plant material comprises two or more of cellulosic plant material derived from at least one woody plant, cellulosic material derived from recovered or recycled wood and non-wood cellulosic plant material.
- Cellulosic plant material derived from a woody plant may be any type of wood fibres or chip that are currently used in the manufacture of composite boards
- the wood fibres or chip may be hardwood or softwood and may be influenced by the availability and type of wood that is obtained from locally grown trees.
- the wood fibre or chip may be obtained from trees grown to produce wood fibre or chip or may be obtained as sawdust or offcuts of wood formed during processing of logs or the manufacture of wood products, such as furniture.
- the cellulosic plant material may comprise wood chip or fibre derived from tree branches and/or bark.
- Suitable wood used to provide the cellulosic plant material is derived from trees including coniferous species such as pine, fir, spruce or hemlock; or hardwood species such as oak, cherry, poplar, maple, larch, aspen, alder, gum, hickory, birch and beech.
- Cellulosic plant material derived from recovered or recycled wood may be derived from any waste wood originally used in a different product, for example, fence palings, telephone poles or lamp posts, weatherboards, pallets, discarded furniture or waste or discarded particle boards or may be from construction or demolition sites.
- the recovered or recycled wood may have been treated to prevent attack by pests such as fungi or termites, or may have a surface treatment such as a stain, lacquer or paint.
- Recovered or recycled wood may be from woods such as pine, fir, ash, hickory, beech, birch, cedar, redwood, hemlock, spruce, oak, maple, cherry, walnut, rosewood, teak and the like.
- non-wood cellulosic plant material refers to plant material that contains cellulose fibres and that is derived from a plant source other than a tree.
- the non-wood cellulosic plant material may be agricultural plant material or may be derived from unwanted plants such as weeds.
- Agricultural plant material may be plant material derived from crop waste, where the plant material is a waste product produced when harvesting a crop.
- Agricultural plant material also includes cellulosic plant material grown specifically for the J production of cellulosic material.
- the plants grown specifically for production of cellulosic material are from plants that are fast growing, for example those that may be harvested at least once a year, such as once a year, twice a year, or three times every two years.
- the non-wood cellulosic plant material is derived from agricultural crop waste
- Suitable non-wood cellulosic plant material includes cereal straws such as corn stover, rice straw, wheat straw, barley straw, oat straw and rape seed straw, non-edible grasses such as switch grass and siteria grass, flax, yuldca fibre, lemongrass, jute, sisal, bamboo, pine needles, lupins, kenaf, coir fibre, coconut husks, cotton stalks, coffee husks, ground nut husks, areca nut husks, casaurina leaves, banana leaves and banana stem.
- the non-wood cellulosic material is not lemongrass, particularly when used as the sole source of cellulosic material.
- the virgin wood chip or fibre is present in an amount of 1% to 99%, especially 10 to 90%, 20 to 80%, 30 to 70% or 40 to 60% of the cellulosic plant material.
- the virgin wood fibre or chip is present in the cellulosic plant material at about 50% or less.
- the remainder of the cellulosic plant material is derived from wood fibre or chip from recovered or recycled wood, non-wood cellulosic plant material or a mixture thereof.
- the particle size of the cellulosic plant material is any size suitable to make composite boards.
- the average particle size of the cellulosic plant material is in the range of 5 to 200 mm in length, especially 10 to 150 mm in length or 10 to 100mm in length.
- the average width of the particles is generally between 0.2 and 5 mm, especially 0.2 and 1 mm or 0.2 to 0.5 mm.
- hydrophiUc substance refers to a compound or composition that is able to interact with the plant material surface and increase the hydrophilicity of the plant material surface Suitable hydrophiUc substances include polyhydroxy compounds, polycarboxylic acids, hydroxycarboxylic acids, amino acids and hydroxyamino compounds.
- Suitable lrydrophilic substances include, but are not limited to, ascorbic acid, citric acid, tartaric acid, succinic acid, adipic acid, glutaric acid, glycerine and carbohydrates such as glycer aldehyde, erythrose, threose, ribose, arabinose, xylose, lyxose, allose, alrose, glucose, mannose, gulose, idose, galactose, talose, sucrose, maltose, lactose, fructose or mixtures thereof.
- the hydrophiUc substance is ascorbic acid.
- the hydrophiUc substance is sucrose.
- the hydrophiUc substance may be in any form suitable for coating the surface of the cellulosic plant material.
- the hydrophiUc substance is in crystalline form or powdered form or powdered crystalline form.
- the hydrophiUc substance is present in an amount suitable to coat the cellulosic plant material and may depend on the type of cellulosic plant material used.
- the hydrophiUc substance may be present in an amount of about 1 to 50% by weight of the cellulosic plant material.
- the hydrophiUc substance is present in an amount of about 1 to 25 % by weight of the cellulosic plant material, especially 1 to 15% by weight or 1 to 10 % by weight, more especially 3 to 8 % by weight or 3 to 7 % by weight, most especially 3 to 5 % by weight.
- the hydrophilic substance is present in an amount of 3.5 to 6 % by weight of the cellulosic plant material.
- the adhesive resin may be any conventional adhesive or resin used in making standard wood particle or fibre boards.
- the adhesive may be a thermosetting or thermoplastic polymer. Suitable resins and adhesives include melamine, aldehyde, urea, isocyanate, phenolic, resorcinolic and epoxy resins and polyvinylacetate adhesives.
- the resin is selected from a formaldehyde resin, a urea melamine resin, a melamine formaldehyde resin, a phenol formaldehyde resin, a phenol melamine formaldehyde resin, a melamine resin, a urea formaldehyde resin, a melamine urea formaldehyde resin, a melamine urea phenolic formaldehyde resin, a methylene diphenyl diisocyanate resin, a polymethylene diphenyl diisocyanate (MDI or pMDI, such . as polymethylenediphenyl-4,4'-diisocyanate) resin or a combination thereof.
- a formaldehyde resin a urea melamine resin, a melamine formaldehyde resin, a phenol formaldehyde resin, a phenol melamine formaldehyde resin, a melamine resin, a urea formaldeh
- the adhesive may especially be a formaldehyde resin, a urea melamine resin, a melamine formaldehyde resin, a melamine resin, a urea formaldehyde resin, a melamine urea formaldehyde resin, a melamine urea phenolic formaldehyde resin, a methylene diphenyl diisocyanate resin, a polymethylene diphenyl diisocyanate (such as plymethylenediphenyl-4,4' -diisocyanate) resin, or a combination thereof.
- the resin is a melamine urea formaldehyde resin.
- the resin is a methylene diphenyl diisocyanate resin.
- the amount of adhesive or resin used will depend on the nature of the adhesive or resin but in general will be in the range of 1 to 40 % by weight. In some embodiments, where the adhesive is a polyvinylacetate adhesive, the adhesive may be present in an amount of 20 to 40 % by weight of the cellulosic plant material. In other embodiments, where the resin is a formaldehyde containing resin, the resin maybe present in an amount of 10 to 20 % by weight of the cellulosic plant material. In yet other embodiments, where the resin is a diisocyanate resin, the resin is present in an amount of 1 to 10 % by weight of the cellulosic plant material.
- the particle or fibre board may also optionally include other additives such as waxes, dyes, hardeners, finishing agents, fire retardants, release agents, plasticisers, fillers, biocides pigments, catalysts, formaldehyde scavengers, ultraviolet light absorbers or combinations thereof. Some of these additives may be included in the resin or adhesive composition.
- Waxes may be present to impart water resistance of the finished product. Suitable waxes include paraffin wax and bees wax. Waxes may be present in an amount of 0.1 to 2%, especially 0.5 to 1% by weight of the cellulosic plant material.
- Suitable hardeners include ammonium chloride, ammonium sulphate and magnesium chloride. Hardeners may be present in an amount of from 1 to 5 %, especially 1 to 4 % by weight of the cellulosic plant material.
- Suitable fire retardants include boric acid, zinc borate, magnesium hydroxide, borax or combinations thereof. Suitable amounts of fire retardant may he between 0.1 and 10 % by weight of the adhesive or resin.
- Suitable release agents include organic phosphates, thiophosphates, pyrophosphates and other organic phosphate compounds.
- Suitable biocides include zinc borate, copper ammonium acetate, copper ammonium carbonate, copper betaine compounds and the like.
- a suitable UV absorber is titanium dioxide.
- Dyes and pigments may be incorporated into the particle board or fibre board to provide a desired colour finish. Amounts of dyes and pigments incorporated may be any amount suitable to obtain the desired colour finish.
- a suitable formaldehyde scavenger is melamine. These components may be optionally included in the composite boards in amounts as known in the art for standard or conventional composite boards.
- silica, silicates, biochar, wood char and ash may be added to the cellulosic plant material during the manufacture of the composite board, in amounts of between 0.1 to 10% by weight of the cellulosic plant material.
- biochar and wood char are being considered as potential products that could be used for sequestration of carbon. Incorporation of such products into the particle board is also a means of sequestering carbon.
- the outer surface of the particle or fibre board may further include a vaneer, such as a wood vaneer or plastic vaneer.
- a vaneer such as a wood vaneer or plastic vaneer.
- plastic vaneers include melamine and polyvinyl chloride laminates.
- the composite board is a particle board or fibre board such as medium-density or high-density fibre board,
- the cellulosic plant material is of a size suitable to make composite board.
- the average particle size of the cellulosic plant material is in the range of 5 to 200 mm, and will depend on the type of the cellulosic plant material used. In some embodiments, the average particle size is in the range of 5 mm to 150 mm, 10 mm to 150 mm, 10 mm to 100 mm, especially 20 mm to 80 mm in length. Typically the particles have a width of between about 0.2 and 5 mm, especially 0.2 and 1 mm, more especially 0.2 and 0.5 mm.
- the cellulosic plant material particles may be prepared by standard means in the art such as mulcliing, chopping, flaking, chipping and milling. Such processes may be repeated until a suitable average particle size has been obtained. In embodiments where precise particle dimensions are less important, hammer-milling or disc-chipping may be suitable to produce the particles of cellulosic plant material. In embodiments where precise particle sizes are required, disc-flaking or knife-ring flaking may be used. In some embodiments, the particles may be sieved or sorted by airflow separation to remove larger or smaller undesirable particles or to provide particles with a maximum or minimum size limit.
- the cellulosic plant material is dried prior to milling, mulching, chipping, flaking or chopping. Drying may be achieved in sunlight and low humidity or in an oven. In some embodiments, the cellulosic plant material is dried to a moisture content or about 13 to 15% prior to particle formation. In some embodiments, the cellulosic plant material particles obtained from milling, chopping, chipping, flaking or mulching are dried, optionally in a kiln to provide a moisture content of 2% to 8% by weight, especially about 3% by weight. In some embodiments, the hydrophilic substance is added after particle formation but before drying. In other embodiments, the hydrophilic substance is added after particle formation and after drying.
- the particles of cellulosic plant material are treated with the hydrophilic substance before adding the adhesive or resin.
- the treatment with the hydrophilic substance may occur in any manner that allows the hydrophilic substance to come into intimate contact with the surface of the non-wood cellulosic plant material, for example, by spraying or dusting.
- the hydrophilic substance may be a liquid or a solid; for example, a powder, a crystalline form or a powdered crystalline form. In particular embodiments, the hydrophilic substance is a powder or powdered crystalline form.
- the resin or adhesive may be added and blended with the cellulosic plant material in any suitable manner.
- the particulate cellulosic plant material coated with hydrophilic substance may be placed in a blender and stirred while liquid resin is poured or sprayed onto the cellulosic material.
- the adhesive or resin composition comprises at least one additive selected from waxes, dyes, hardeners, finishing agents, fire retardants, release agents, plasticisers, fillers, biocides, pigments, catalysts, formaldehyde scavengers and ultraviolet light absorbers, especially waxes and hardeners.
- one or more of these additives is included in the adhesive or resin composition In some embodiments, one or more of these additives is added to the plant material before addition of the resin.
- silica, silicates, biochar, wood char or ash may be added to the cellulosic plant material, especially after particle formation and/or particle size separation.
- the amount of silica, silicates, biochar, wood char or ash may be in the range of 0.1 to 10% by weight of the cellulosic plant material.
- the silica, silicates, biochar, wood char or ash may be added to the iesin or adhesive.
- the composite board is prepared in the same manner as conventional particle or fibre boards.
- the cellulosic plant material, hydrophilic substance and adhesive or resin mixture is formed into a mat and treated by hot-pressing to activate the resin bonding the cellulosic material together.
- the temperature used is generally above 100 °C, for example between 140 °C and 185 °C.
- the pressure is usually between 2 and 7 MPa, especially about 4.5 MPa. After pressing, the boards are cooled.
- a veneer finish may be applied.
- the composite boards may be finished by trimming and/or sanding to give an appropriate or desired size and finished surface.
- the term "about” refers to a quantity, level, value, dimension, size, or amount that varies by as much as 30%, 25%, 20%, 15% or 10% to a reference quantity, level, value, dimension, size, or amount.
- Figure 1 illustrates diagrammatically the process of one or more of the following examples to the production of a multi-layered board.
- Figure 2 illustrates diagiammatically the process of one or more of the following examples to the production of a single-layered board.
- Example 1 non-wood celhilosic material particle board
- Non-wood cellulosic plant material was dried in ambient conditions of humidity and sunlight for 3 to 5 days. Once dry, the plant material was mulched. Mulching was repeated until the average particle size was 60 mm.
- the plant material was dusted with ascorbic acid, 3.5 - 4 % by weight of the plant material being treated. Following this treatment, the plant material was dried in a kiln to provide a moisture content of below 3%.
- Particle boards were ptepared to 16 mm thickness using standaid techniques with the following components:
- the product particle boards were formed into a mat and hot-pressed.
- the product particle boards were tested to Australian standards AS4266.5 (bending strength, MOR), AS4266.5 (modulus of elasticity, MOE), AS4266.6 (internal bond), AS4266.8 (24 hour thickness swelling) and AS4266.10 (wet bonding strength, MOR- A).
- Example 2 particle board made with cellulosic plant material derived from wood blend A mixture of wood derived cellulosic materials in the form of sawdust comprising hardwood (ironbark and camphor) and softwood (pine shavings from Pinus radiata) were sieved to remove particles less than 5 mm in length. The average particle size of the sawdust was 5 mm to 60 mm in length for the hardwood sawdust and 5 mm to 40 mm in length for the softwood sawdust.
- An aluminium tray (210 mm x 270 mm) was lined with aluminium foil and an oven was preheated to 100°C. 105g of the cellulosic material was dusted with 4g (3.5%) of powdered crystalline ascorbic acid. It was not clear visually that good even coverage of the cellulosic material was achieved so a further 4 g of ascorbic acid was added. Coverage of the cellulosic material was tested by exposing a sample of the coated material to a flame and observing the ascorbic acid turn golden brown. Even coverage was confirmed.
- Example 2 The process described in Example 2 was repeated with 40 g pine sliavings (5 mm - 40 mm in length) and 18g of icing sugar.
- the icing sugar comprised riot only sucrose but also tapioca starch (2 - 4% w/w) to improve flowability of the icing sugar.
- the board produced was a clean looking particle board that was light in weight due to the low density of the pine shavings.
- Example 4 Blend of wood and non-wood cellulosic material
- the composition of the present application can be used with advantage to make one or more of the layers of a layered product such as plywood.
- Plywood broadly describes a family of products where layers, sometimes termed veneers or plys, are glued together, sandwich-like, to form a layered composite product. These individual layers may be treated with a hydrophih ' c substance prior to resin application and manufacture of ply. Individual layers can be made from MDP or chipboard or, in this instance, layers manufactured from the composition described and claimed in the present application.
- Engineered wood products are manufactured by gluing together ligneous softwood material to a known standard,
- the raw ligneous (containing wood fibre) material is sowced from all stages of timber production including thinnings, logs and mill byproducts such as dimensioned wood offcuts, woodchips and sawdust.
- Softwood tree species are primarily used because of their more favorable fibre and density properties compared with hardwood species. However, hardwood species are often the source of ligneous material for hardboard manufacture and veneers used in the production of plywoods.
- Logs and wood offcuts can be pulverised, chipped or flaked and reconstituted using adhesives into sheets or wood based panels. Alternatively, wood offcuts can be joined end to end by finger jointing and gluing to form longer lengths of dimensioned lumber.
- Wood based panel products include medium density fibreboard (MDF), particleboard, hardboard, oriented strand board (OSB) and plywood.
- Load bearing products include laminated veneer lumber (LVL), glued laminated timber (glulam) and I-beams.
- Medium density fibreboard is a fibreboard using reconstituted fi ne wood fibres. The fibres are bonded using adhesives and then heat pressed. MDF is well suited to further machining (such as routing) and a wide range of internal applications such as furniture manufacturing. Particleboard manufacture is similar to that of MDF, but uses predominantly larger chips. It is suitable for interior use only and remains the world's dominant wood based panel. Particleboard is used extensively in structural applications (floors, stairs) and in cabinet making.
- Hardboard is manufactured using hardwood ligneous fibres, without additional adhesives. Under sufficient heat and pressure, lignin will flow and act as a thermosetting adhesive. In Australia hardboard is commonly recognised as MasoniteTM or WeathertexTM.
- Plywood is made of thin sheets of veneer peeled from a log and arranged in layers to form a panel. Alternate layers are oriented at 90 degrees to enhance the strength of the panel. Glues and hot pressing are used to adhere and bond the veneer layers into a panel product. Plywood is used widely in both construction and furniture manufacturing industries. Oriented strand board manufacture also requires adhesives, heat and pressure but consists of compressed ligneous strands arranged in layers oriented at right angles to one another, similar to plywood. OSB is widely used in commercial and residential construction and can be the vertical, load bearing component of I-beams.
- Laminated veneer lumber is created by gluing layers of gr aded wood veneers into blocks with the grain of each layer of veneer running in the same direction. These blocks are then sawn lengthways to produce dimensioned lumber. The greater dimensional and load bearing characteristics of LVLs compared with solid lumber make them ideal for construction and spanning.
- I-beams consist of top and bottom flanges united with webs.
- the flanges are generally made of solid sawn lumber or LVL and the webs are made from plywood or OSB.
- I-beams provide a strong, economical and lightweight load bearing solution in residential and light commercial applications. , ⁇
- Glued laminated timber (glulani) consists of solid wood laminations bonded together with strong, waterproof adhesives. Glulam provides load bearing solutions in both commercial and residential construction, particularly where requirements are for spanning of long distances or curved beams and trusses.
- miscanthus can be utilised as a fibre.
- Boards may be made with very little resin, being comprised of cellulosic fibre and a hydrophilic substance such as, ascorbic acid with other additives that are commonly added such as wax ammonia and or sulphuric acid.
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- Engineering & Computer Science (AREA)
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- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
Description
Claims
Priority Applications (2)
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US14/760,481 US20150354143A1 (en) | 2013-01-11 | 2014-01-10 | Composite boards comprising cellulosic plant material |
AU2014205040A AU2014205040A1 (en) | 2013-01-11 | 2014-01-10 | Composite boards comprising cellulosic plant material |
Applications Claiming Priority (2)
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AU2013900083A AU2013900083A0 (en) | 2013-01-11 | Composite Boards | |
AU2013900083 | 2013-01-11 |
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WO2014107767A1 true WO2014107767A1 (en) | 2014-07-17 |
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PCT/AU2014/000015 WO2014107767A1 (en) | 2013-01-11 | 2014-01-10 | Composite boards comprising cellulosic plant material |
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US (1) | US20150354143A1 (en) |
AU (1) | AU2014205040A1 (en) |
WO (1) | WO2014107767A1 (en) |
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FR3032213A1 (en) * | 2015-01-29 | 2016-08-05 | Celyne Destremau | PROCESS IN WHICH ADHESIVE ADHESIVE ADHESIVE FROM STARCH TO PREPARE CEREAL STRAW PANELS |
PT108887A (en) * | 2015-10-14 | 2017-04-17 | Maria Santos Lima Ana | COMPOSITE MATERIAL BASED ON MATERIALS FROM AGRO-INDUSTRIAL ACTIVITY, PRODUCTION PROCESS AND USE. |
WO2017221055A1 (en) * | 2016-06-20 | 2017-12-28 | Instituto Tecnológico Metropolitano | A composite cellulose material obtained from coffee husks or cocoa shells, an article comprising same and a method for producing said material |
WO2018004430A1 (en) * | 2016-06-27 | 2018-01-04 | Ikea Supply Ag | Hollow board |
WO2018136763A1 (en) * | 2017-01-19 | 2018-07-26 | Javacube, Inc. | Cellulosic composition containing coffee parchment cellulose and uses thereof |
WO2019053671A1 (en) * | 2017-09-15 | 2019-03-21 | Santos Lima Ana Maria | Alternative uses of food processing by-products |
DE102020128378A1 (en) | 2020-10-28 | 2022-04-28 | Ava Biochem Ag | PROCESS FOR MAKING A COMPOSITE |
DE102022203336A1 (en) | 2022-04-04 | 2023-10-05 | Alexander Heggen | Composite panel and process for its production |
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- 2014-01-10 WO PCT/AU2014/000015 patent/WO2014107767A1/en active Application Filing
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FR3032213A1 (en) * | 2015-01-29 | 2016-08-05 | Celyne Destremau | PROCESS IN WHICH ADHESIVE ADHESIVE ADHESIVE FROM STARCH TO PREPARE CEREAL STRAW PANELS |
PT108887A (en) * | 2015-10-14 | 2017-04-17 | Maria Santos Lima Ana | COMPOSITE MATERIAL BASED ON MATERIALS FROM AGRO-INDUSTRIAL ACTIVITY, PRODUCTION PROCESS AND USE. |
WO2017221055A1 (en) * | 2016-06-20 | 2017-12-28 | Instituto Tecnológico Metropolitano | A composite cellulose material obtained from coffee husks or cocoa shells, an article comprising same and a method for producing said material |
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WO2018004430A1 (en) * | 2016-06-27 | 2018-01-04 | Ikea Supply Ag | Hollow board |
US11691393B2 (en) | 2016-06-27 | 2023-07-04 | Ikea Supply Ag | Hollow board |
US10633521B2 (en) | 2017-01-19 | 2020-04-28 | Javacube, Inc. | Cellulosic composition containing coffee parchment cellulose and uses thereof |
WO2018136763A1 (en) * | 2017-01-19 | 2018-07-26 | Javacube, Inc. | Cellulosic composition containing coffee parchment cellulose and uses thereof |
WO2019053671A1 (en) * | 2017-09-15 | 2019-03-21 | Santos Lima Ana Maria | Alternative uses of food processing by-products |
DE102020128378A1 (en) | 2020-10-28 | 2022-04-28 | Ava Biochem Ag | PROCESS FOR MAKING A COMPOSITE |
EP3991931A1 (en) | 2020-10-28 | 2022-05-04 | AVA Biochem AG | Method for manufacturing a compound material |
DE102022203336A1 (en) | 2022-04-04 | 2023-10-05 | Alexander Heggen | Composite panel and process for its production |
Also Published As
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AU2014205040A1 (en) | 2015-07-30 |
US20150354143A1 (en) | 2015-12-10 |
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