EP2138288A1 - Corps de formage pour l'industrie du bâtiment ou du meuble, agencement de corps de formage et procédé de fabrication d'un corps de formage - Google Patents

Corps de formage pour l'industrie du bâtiment ou du meuble, agencement de corps de formage et procédé de fabrication d'un corps de formage Download PDF

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Publication number
EP2138288A1
EP2138288A1 EP09163150A EP09163150A EP2138288A1 EP 2138288 A1 EP2138288 A1 EP 2138288A1 EP 09163150 A EP09163150 A EP 09163150A EP 09163150 A EP09163150 A EP 09163150A EP 2138288 A1 EP2138288 A1 EP 2138288A1
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EP
European Patent Office
Prior art keywords
bamboo
shaped body
binder
bamboo leaves
leaves
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.)
Withdrawn
Application number
EP09163150A
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German (de)
English (en)
Inventor
Heinz B. Mader
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AGM Mader GmbH
Original Assignee
AGM Mader GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by AGM Mader GmbH filed Critical AGM Mader GmbH
Publication of EP2138288A1 publication Critical patent/EP2138288A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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

Definitions

  • the present invention relates to a molded article with a binder for the construction or furniture industry. Furthermore, the invention relates to a molding arrangement with a plurality of such moldings and a method for producing a shaped body for the construction or furniture industry.
  • chipboard or wood fiber boards are widely used.
  • wood materials in the form of wood chips or wood fibers for example from wood waste, are usually used and mixed with natural or synthetic binders and then pressed into a shaped body, in particular a fiberboard.
  • a binder for such wood fiber boards are often used urea-containing resins, however, which contain a considerable amount of formaldehyde.
  • the wood-based materials used have the disadvantage that due to the hygroscopic properties of wood a strong swelling can occur. In a subsequent drying occurs due to the uneven fiber structure an uneven shrinkage of the wood, which then form cracks.
  • thermoplastic natural fiber product by treating at least one natural fiber component as well at least one thermoplastic plastic component in a mixing and crushing device.
  • a natural fiber component wood, for example in the form of sawdust, wood chips and / or wood pellets, and natural fibers, such as straw, fibers from corn plants and hemp used.
  • the invention has for its object to provide simple and inexpensive to produce molded body for the construction or furniture industry, a suitable mold assembly and an associated manufacturing process, which can be largely dispensed with wood materials, but at the same time Requirements for such moldings, in particular with regard to the strength, the weight and the swelling behavior can be met.
  • shaped body is understood in particular to mean a plate-shaped body which can be produced by a suitably designed molding tool, for example by means of extrusion or by pressing.
  • bamboo leaves are a highly available and renewable resource.
  • the bamboo leaves at least partially or completely comprise bamboo bracts or bamboo stalk sheaths.
  • the amount of bamboo leaves used for the shaped body can be used partially or completely from bamboo bracts.
  • These bamboo bracts may also be referred to as sheath blades.
  • the bamboo leaves comprise at least in part bamboo sheath blades and / or bamboo shells.
  • the bamboo leaves are made from these bamboo hemisot leaves and / or bamboo cladding.
  • the bamboo leaves are preferably those bamboo sheath blades and / or bamboo shells.
  • the bamboo that falls under the grass species forms bracts or sheath blades which have a fibrous structure which extends substantially in the longitudinal direction of the leaf.
  • these bracts / Halmscheidenage on a longitudinally elongated shape which may have, for example, a length of up to 1 m and a width of about 0, 30 m (in the smoothed state).
  • the bracts can almost completely enclose the straw, much like a sleeve, so that a large width for the smoothed sheet results.
  • the bracts / Halmscheidenage are usually rounded rounded at her attached to the stem approach.
  • the bracts comprise the stalk in an area between two nodes (Nodium) of the straw and then extend with their remaining remaining length to the blade tip in a curved course of the stalk upwards.
  • the bracts have a unidirectional fiber structure, that is to say that the leaf fibers extend along the longitudinal direction of the respective sheet.
  • the portion of the bract between the adjacent nodes of the bamboo stem is particularly preferably used, since this portion has a strong structure with a requirements of the molding body bearing fibrous structure.
  • the fibers in bamboo sheaves are substantially aligned along one direction and substantially parallel to one another, which allows high strength values to be achieved for the finished molded article and the molded article assembly.
  • the silicon layer located in the region of this section on the side facing the stalk of the Hüllblattes a silicon layer, which gives the finished molded body a pearlescent gloss.
  • the silicon content is high. Due to the size of the bract, the leaves are particularly suitable.
  • the bracts / sheath blades are repelled when the stalk has reached a corresponding strength and protection by the hull sheet is no longer necessary.
  • This fall of the bracts is usually once a year.
  • These usually dried leaves are preferably used. It is therefore not necessary to cut the bamboo. It can be waited until the bracts fall off and can be harvested.
  • a natural waste product can be utilized in a simple manner.
  • the bamboo cover sheet can be used in its entirety, whereby no previous preparation of the leaves is necessary.
  • the still on the plant, not yet dried leaves can be used and dried in drying equipment.
  • the bamboo leaves are aligned along the orientation of their fiber structure and arranged next to one another, in particular substantially parallel to one another.
  • particularly high strength values for the finished manufactured Shaped body can be achieved.
  • less material is needed to achieve a given strength value, which can reduce the molding dimensions.
  • the molding is made of a molding compound with bamboo leaves comminuted to particles and the binder, in particular pressed.
  • the molding compound comprising the particles and the binder can be introduced into a correspondingly shaped molding tool and the molding compound subsequently pressed into the molding.
  • fillers for example from other renewable raw materials, can be added.
  • the shaped body is characterized by an additional constituent.
  • an additional constituent which preferably consists of a renewable raw material, for example, the mechanical strength values can be influenced and / or the costs can be varied depending on the availability and price of the available renewable renewable raw materials.
  • the ingredients are grasses, especially corn.
  • the additional ingredients are cereals, especially straw, wheat and / or oats.
  • coconut fibers are also suitable as additional constituents.
  • leaves and / or stems can be used for the additional ingredients.
  • binder all conventionally known binders can be used.
  • a binder comprising a copolymer is used.
  • a binder proves to be advantageous, which is free of formaldehyde.
  • the mixture Blähglimmer (vermiculite) and / or mica flour are added.
  • the molded body is characterized by a plate-like shape and a plurality of recesses and / or projections.
  • a shaped body forms a kind of basic module, on the basis of which a modular system of shaped bodies can be provided.
  • the recesses and / or projections extend in a longitudinal direction of the shaped body and are aligned substantially parallel to one another.
  • the recesses and / or projections may have a substantially square cross-section.
  • this cross-sectional shape extends along the longitudinal direction with a constant shape.
  • the shaped bodies can be arranged adjacent to one another, overlapping and / or one another. Furthermore, the shaped bodies can be offset from one another at a predetermined angle, preferably offset at right angles to one another.
  • the shaped bodies can be arranged offset from one another in such a way that the recesses of a first shaped body and the recesses of a second shaped body are directed toward one another or away from one another. Furthermore, a first outer side of the first molded body facing away from the recesses can rest directly on a second outer side of the second molded body or be remote from it.
  • the shaped body according to the invention in the sense of a basic module, only one basic shape is needed to any possible plate or wall element in the simplest way to manufacture.
  • the production of this basic element is possible for example by means of extrusion or in the form of stack presses.
  • the recesses allow thermal insulation and / or ventilation of the component or piece of furniture.
  • the recesses or projections of the adjoining shaped bodies can be arranged such that the projection formed by two recesses of a shaped body engages in a recess of the other shaped body to form a tongue and groove connection.
  • these leaves can also be processed in a simple manner and form by means of the binder to a shaped body. Basically, this is no multiple dipping the bamboo leaves required. In addition, it is a waste product of bamboo, which only needs to be collected from the ground. Furthermore, in the case of a side-by-side and / or diagonally and / or layerwise offset arrangement of the bamboo sheets, particularly high strength values can be achieved for the finished molded article.
  • the wetting can for example be done by immersion.
  • the bamboo leaves are smoothed before wetting.
  • the smoothing of rolled sheets is done using pressure and heat (for example, about 150 ° C).
  • pressure and heat for example, about 150 ° C.
  • a similar to the ironing method can be used in which strength can be used.
  • the largely flattened or smoothed leaves can be distributed according to the shape and dimensions of the molding.
  • a visually appealing surface structure for the finished molded body can be achieved.
  • the bamboo leaves can be dried before and / or after wetting, preferably up to a residual moisture of 10 wt .-%.
  • a residual moisture of 10 wt .-% By drying before wetting the water or moisture content of the bamboo leaves is reduced.
  • the bamboo leaves are immersed in a copolymer as a binder and so wetted by a kind Precoating with the copolymer.
  • a subsequent drying there is the advantage that, in particular due to the non-curing resin in the copolymer, the further processing of the wetted with the binder, dried bamboo leaves must not be made immediately, but can be done later. In this way, there is the particular advantage that the binder-coated bamboo leaves can be stored for any length of time.
  • portions of expanded mica and / or mica flour can be added.
  • the molding compound comprising the particles and the binder can be introduced into a correspondingly shaped molding tool and the molding compound subsequently pressed into the molding. If necessary, fillers, for example from other renewable raw materials, can be added.
  • the additional ingredients are derived from renewable plants. More preferably, the ingredients are grasses, especially corn. Alternatively, the ingredients may also consist of cereals, in particular of straw, wheat and / or oats. With regard to the binder used, reference is made to the above statements on the molding according to the invention.
  • the bamboo leaves preferably comprise at least in part bamboo sheath blades and / or bamboo shells.
  • the bamboo leaves are made from these bamboo hemisot leaves and / or bamboo cladding.
  • the bamboo leaves are preferably those bamboo sheath blades and / or bamboo shells.
  • FIGS. 1 to 3 show a bamboo stem 100 at least partially surrounding bamboo leaf in the form of a bamboo hull or bamboo Halmscheidenblattes 110.
  • This bamboo hull 110 may also be referred to as Halmscheidenblatt. So far as the following is spoken of the Bam-bus Hüllblatt, also the bamboo Halmscheidenblatt is meant and can be replaced thereby.
  • the total amount of bamboo leaves used may be partially or wholly used in bamboo bracts.
  • the bamboo cover sheet 110 has a largely unidirectional fiber structure, that is, the sheet fibers extend substantially in the longitudinal direction of the sheet.
  • the bamboo hull 110 is rounded at its attached to the bamboo stem 100 approach or straight. Furthermore, the bamboo hull 110 is placed around the bamboo stem 100 at least in an area between two nodes 102, 104 of the bamboo stem 100 and then extends with its remaining remaining length to the blade tip in a curved course of the bamboo stem 100 upwards (see Fig. 1, 2 ).
  • the bamboo cover sheet 110 almost completely encloses the bamboo stem 100 in its circumferential direction.
  • the bamboo cover sheet 100 protects the bamboo stem 100 against external influences.
  • the bamboo bracts 110 have an elongated shape that in the smoothed state (see Fig. 3 ) may, for example, have a length S of up to 1 m and a width R of about 0.30 m.
  • a portion T of the bamboo cover sheet 110 between the adjacent nodes 102, 104 of the bamboo stem 100 is particularly preferably used for the production of the shaped body, since this portion T has a strong structure with the requirements of the shaped body bill fiber structure. Furthermore, in the region of this section T on the side of the bamboo cover sheet 110 facing the bamboo stem 100 there is a silicon layer which gives the finished shaped body a pearlescent gloss.
  • the bamboo bracts 110 are repelled by the bamboo when the bamboo stem 100 has reached a certain age and strength and is no longer needed to protect the bamboo straw 100.
  • the bamboo hull 110 then detaches from the bamboo stem 100 in the area of the nodes 102, 104.
  • predetermined breaking points 120, 122 to which the sheet 100 then breaks, for example, by the action of wind and drops.
  • the predetermined breaking points 120, 122 are in Fig. 3 in terms of location and indicated by dashed lines to better illustrate the proportions of the dimensions of the bamboo cover sheet 110.
  • bamboo bracts or bamboo hemistillic leaves 110 are used for the production of the molded articles and moldings explained below.
  • the bamboo bracts 110 may be used in their sheet form, preferably smoothed, or as comminuted particles for manufacturing.
  • Fig. 4 shows a molded body 20 having an outer side 22, an inner side 24 and a side surface 26.
  • the shaped body 20 is formed overall plate-shaped and has a plurality of recesses 40 and projections 50.
  • the portions of the molded body 20 present between the recesses 40 form the protrusions 50.
  • the recesses 40 and protrusions 50 extend along a longitudinal direction L.
  • the plate-shaped body 20 has a height H.
  • the projections 50 have a width Y and a depth X.
  • the depth X of the projections 50 corresponds to the depth of the recesses 40.
  • an axis A in the middle from which the selected grid dimension, which corresponds to the depth X in the present exemplary embodiment, results.
  • the width of the projections 50 may also have the dimension X or a preferably only slightly smaller or larger value.
  • the molded body 20 is a basic module, which corresponds to those in the FIGS. 5 to 7 shown embodiments can be used.
  • the second molded body 30 is identical to the molded body 20 and comprises an outer side 32, an inner side 34 and a side surface 36.
  • the molded body 30 comprises recesses 40 and Projections 50.
  • the dimensions H, X and Y correspond to the dimensions of the molded body 20.
  • the two shaped bodies 20, 30 are arranged on one another such that the recesses 40 of the shaped body 20 are directed away from the recesses 40 of the shaped body 30.
  • the outer side 22 of the molded body 20 is connected to the outer side 32 of the molded body 30.
  • This connection preferably takes place by means of a material connection, for example, by an adhesive.
  • the molded body 20 and the molded body 30 are offset from each other at a predetermined angle ⁇ .
  • the angle ⁇ is according to Fig. 6 about 90 °.
  • the recesses 40 or protrusions 50 of the molded body 30 extend in the longitudinal direction L
  • the recesses 40 or protrusions 50 of the molded body 20 extend in a direction transverse to the longitudinal direction L transverse direction Q.
  • the two shaped bodies 20, 30 could also be aligned parallel to one another in the longitudinal direction L or transverse direction Q.
  • the shaped body assembly 10 includes the two already in Fig. 5 shown moldings 20 and 30.
  • the two shaped bodies 20, 30 are arranged relative to one another such that the recesses 40 of the shaped body 20 and the recesses 40 of the shaped body 30 are directed toward one another.
  • the inner side 24 of the shaped body 20 rests on the inner side 34 of the molded body 30.
  • the outer sides 22 and 32 are each directed outward, whereby a closed upper and lower lateral surface can be achieved.
  • the side surface 26 may be provided with a cover, so that a molded body closed from the outside can be produced.
  • FIG. 8 a molding assembly 10, wherein the two molding assemblies 10 from the embodiment according to Fig. 6 lying one above the other and are connected to each other. In the lowest position is the molded body 30. Overlying the molded body 20 is positioned. A further shaped body 30 is located above this shaped body 20. Finally, another shaped body 20 is located in the topmost layer. In the area of the contact areas, the respective shaped bodies are firmly connected to one another, preferably by an adhesive layer. Incidentally, the comments on Fig. 7 corresponding.
  • the aforesaid shaped bodies 20, 30 are made of a binder and a mixture, the mixture comprising particles of shredded bamboo leaves with a fiber structure oriented in one direction over the single particle.
  • the fibers of each particle extend substantially along the longitudinal direction of the particle.
  • the fiber structure of the particles does not substantially comprise fibers oriented transversely to the longitudinal direction of the particles, as is usually the case with wood particles.
  • the shredded bamboo leaves are preferably obtained from the so-called, the bamboo stem surrounding bamboo cladding or bamboo HalmscheidenUSDn.
  • the particle mixture is mixed with the binder to form a molding compound and then molded from the molding composition of the molding.
  • the molding process is preferably carried out by pressing or by extrusion.
  • the binder preferably comprises copolymer. More preferably, the binder comprises acrylate copolymer.
  • the binder is formaldehyde-free or the content of formaldehyde is at least reduced.
  • the mixture can be mixed with expanding mica and / or mica flour.
  • the mixture may be admixed with additional constituents from renewable raw materials and, in particular, from renewable plants.
  • the ingredients are selected from the group of grasses or the group of cereals.
  • a mold with a correspondingly formed cavity is preferably provided. That way you can formed with the recesses 40 and projections 50 plate-shaped structure of the moldings 20, 30 in a simple manner.
  • the molded body 20, 30 made of the aforementioned material has a low weight and is preferably free of formaldehyde, both with regard to the binder and with regard to the particles used. Furthermore, the bamboo envelopes and / or renewable raw materials required for production, in particular the renewable plants, are available in sufficient quantity. Furthermore, the shaped body 20, 30 and the shaped body assembly 10 due to the cavities formed by the recesses 40 on a good thermal insulation. In addition, the recesses 40 can also serve as ventilation ducts. In addition, the moldings 20, 30 are also characterized by their extremely low susceptibility to swelling, which is much lower in comparison to wood. Finally, the shaped body 20, 30 in itself already has a high strength, in particular a high tensile strength, and can thus be used for components or furniture components used in the construction or furniture industry instead of components based on wood-based materials.
  • a basic module is provided with the molded body 20, 30, depending on the desired strength and / or dimension of the component or furniture part to be provided in the in the FIGS. 4 to 8 shown arrangement can be assembled. Arrangements may also be chosen in which the projections 50 of a shaped body engage in the recesses 40 of another shaped body to form a positive connection. In particular, with only partial overlap so a component with the desired length and / or width can be achieved. Depending on the desired thickness and / or strength then several layers of moldings 20, 30 can be arranged one above the other. Finally, the outwardly facing insides 24, 34 or outsides 22, 32 may be provided with a cover, such as a laminate if desired be provided with correspondingly visually appealing surface structure.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
EP09163150A 2008-06-24 2009-06-18 Corps de formage pour l'industrie du bâtiment ou du meuble, agencement de corps de formage et procédé de fabrication d'un corps de formage Withdrawn EP2138288A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200810029882 DE102008029882B4 (de) 2008-06-24 2008-06-24 Formkörper für die Bau- oder Möbelindustrie, Formkörperanordnung und Verfahren zur Herstellung eines Formkörpers

Publications (1)

Publication Number Publication Date
EP2138288A1 true EP2138288A1 (fr) 2009-12-30

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EP09163150A Withdrawn EP2138288A1 (fr) 2008-06-24 2009-06-18 Corps de formage pour l'industrie du bâtiment ou du meuble, agencement de corps de formage et procédé de fabrication d'un corps de formage

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EP (1) EP2138288A1 (fr)
DE (1) DE102008029882B4 (fr)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1175981A2 (fr) 2000-07-24 2002-01-30 AgroSys GmbH & Co. KG Procédé pour la production des articles en materiaux fibreux ou végétaux régénérables
DE10065708A1 (de) * 2000-12-29 2002-07-04 Reinhard Keil Raumkörper aus Laub
JP2002273709A (ja) * 2001-03-22 2002-09-25 Arao Mizuta 竹の子の皮より成る容器の製造方法
JP2002362618A (ja) * 2001-06-08 2002-12-18 Miyata Teiko 竹皮や木削薄葉片のその他加工品
US20030056484A1 (en) * 2001-09-19 2003-03-27 Katsuyama Technos Ltd. Yarn and cloths made mainly from bamboo sheaths and methods for manufacturing the same
WO2003035373A2 (fr) 2001-10-23 2003-05-01 Markus Rettenbacher Corps moule contenant une matiere plastique et renforcee par des fibres naturelles
DE10247711A1 (de) 2002-03-08 2003-09-25 Helmut Hiendl Verfahren zum Herstellen eines thermoplastischen Naturfaserprodukts
JP2005319755A (ja) * 2004-05-11 2005-11-17 Katsuyama Technos:Kk ボード材及びその製造方法

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1175981A2 (fr) 2000-07-24 2002-01-30 AgroSys GmbH & Co. KG Procédé pour la production des articles en materiaux fibreux ou végétaux régénérables
DE10065708A1 (de) * 2000-12-29 2002-07-04 Reinhard Keil Raumkörper aus Laub
JP2002273709A (ja) * 2001-03-22 2002-09-25 Arao Mizuta 竹の子の皮より成る容器の製造方法
JP2002362618A (ja) * 2001-06-08 2002-12-18 Miyata Teiko 竹皮や木削薄葉片のその他加工品
US20030056484A1 (en) * 2001-09-19 2003-03-27 Katsuyama Technos Ltd. Yarn and cloths made mainly from bamboo sheaths and methods for manufacturing the same
WO2003035373A2 (fr) 2001-10-23 2003-05-01 Markus Rettenbacher Corps moule contenant une matiere plastique et renforcee par des fibres naturelles
DE10247711A1 (de) 2002-03-08 2003-09-25 Helmut Hiendl Verfahren zum Herstellen eines thermoplastischen Naturfaserprodukts
JP2005319755A (ja) * 2004-05-11 2005-11-17 Katsuyama Technos:Kk ボード材及びその製造方法

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Publication number Publication date
DE102008029882A1 (de) 2010-01-28
DE102008029882B4 (de) 2010-03-04

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