EP0152837B1 - Procédé et dispositif pour la fabrication de mats de fibres comme matériau de départ pour articles formés à la presse - Google Patents
Procédé et dispositif pour la fabrication de mats de fibres comme matériau de départ pour articles formés à la presse Download PDFInfo
- Publication number
- EP0152837B1 EP0152837B1 EP85101034A EP85101034A EP0152837B1 EP 0152837 B1 EP0152837 B1 EP 0152837B1 EP 85101034 A EP85101034 A EP 85101034A EP 85101034 A EP85101034 A EP 85101034A EP 0152837 B1 EP0152837 B1 EP 0152837B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fleece
- mat
- fabric
- conveyor belt
- lattice
- 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.)
- Expired
Links
- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000000835 fiber Substances 0.000 title description 12
- 239000004744 fabric Substances 0.000 claims abstract description 46
- 238000004519 manufacturing process Methods 0.000 claims abstract description 21
- 229920000728 polyester Polymers 0.000 claims abstract description 18
- 239000002699 waste material Substances 0.000 claims abstract description 18
- 238000000465 moulding Methods 0.000 claims abstract description 17
- 230000008569 process Effects 0.000 claims abstract description 17
- 239000011230 binding agent Substances 0.000 claims abstract description 16
- 239000000203 mixture Substances 0.000 claims abstract description 5
- 239000007858 starting material Substances 0.000 claims abstract description 5
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 4
- 239000004416 thermosoftening plastic Substances 0.000 claims abstract description 4
- 230000009471 action Effects 0.000 claims abstract description 3
- 230000001143 conditioned effect Effects 0.000 claims abstract 2
- 238000009966 trimming Methods 0.000 claims description 8
- 238000004804 winding Methods 0.000 claims description 5
- 239000002174 Styrene-butadiene Substances 0.000 claims description 4
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 4
- 229920000126 latex Polymers 0.000 claims description 3
- 229920000877 Melamine resin Polymers 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 claims description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 2
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 239000004816 latex Substances 0.000 claims description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 claims description 2
- 239000011115 styrene butadiene Substances 0.000 claims description 2
- 230000007246 mechanism Effects 0.000 claims 6
- 238000007599 discharging Methods 0.000 claims 1
- 239000000463 material Substances 0.000 description 15
- 238000003825 pressing Methods 0.000 description 15
- 230000000087 stabilizing effect Effects 0.000 description 12
- 239000002657 fibrous material Substances 0.000 description 6
- 238000003892 spreading Methods 0.000 description 5
- 230000007480 spreading Effects 0.000 description 5
- 238000005056 compaction Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 230000006641 stabilisation Effects 0.000 description 4
- 238000011105 stabilization Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 3
- 229920001187 thermosetting polymer Polymers 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- PXFBZOLANLWPMH-UHFFFAOYSA-N 16-Epiaffinine Natural products C1C(C2=CC=CC=C2N2)=C2C(=O)CC2C(=CC)CN(C)C1C2CO PXFBZOLANLWPMH-UHFFFAOYSA-N 0.000 description 1
- 229920002522 Wood fibre Polymers 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 239000002025 wood fiber Substances 0.000 description 1
Images
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
- B27N3/08—Moulding or pressing
- B27N3/10—Moulding of mats
Definitions
- the invention relates to a process for the production of fiber mats as the starting material for molded parts, by mixing shredded waste materials with thermoplastic and / or thermosetting binders, spreading the mixture onto an air-permeable conveyor belt to form a nonwoven, and compressing the nonwoven at elevated temperature under pressure to form a transportable mat from which individual molded parts are produced by pressing at temperatures between 180 and 220 ° C.
- the endlessly produced mat is separated into individual blanks after compression, which are dimensioned according to the molded part to be produced therefrom.
- the processing of these blanks into molded parts is particularly difficult if these molded parts have deep formations, since the starting material cannot absorb tensile forces, so that thinning and thus tearing of the material can occur during pressing due to combined tensile and shear forces.
- This also applies to other known mats that are not made from shredded waste materials, but instead, for example, from cellulose or lignocellulosic fibers.
- both stabilizing layers have the task in both cases. to enclose the mat blank between them and to carry them into the deep contours of the lower tool during the pressing process, so to ensure that the material is properly retightened.
- the elastic stabilizing layers are stretched elastically during the pressing process, with at least the immediately adjacent layers of the mat blank being carried along due to frictional forces. This means that thinning and cracking can still occur here.
- the second case of the largely stretch-free stabilization layers a kind of sandwich package is deliberately created from the two layers and the mat cut in between, the mat being clamped between the stabilization layers during the pressing process and following the movement of the stabilization layers due to its tissue-like surface structure.
- it has been proposed to suspend the upper stabilizing layer elastically in order to be able to accommodate at least the idle stroke of the upper die of the press without the stabilizing layer already being stretched e.g. DE-PS 30 01 750).
- the pressing must also be carried out in two stages, in that in the first stage, in which the aforementioned stabilizing layers are used, a preform is produced which has the approximate contour with a generally larger wall thickness. In a second stage, the preform is then pressed into its final shape.
- the invention is based on the object of proposing a method and a system for carrying it out, with the aid of which mats can be produced which can be formed in one work step into molded parts of any shape without the aid of stabilizing layers.
- this problem is solved in terms of process technology in that, under the constant action of negative pressure on the underside of the conveyor belt on a first nonwoven layer, a polyester fabric or grid with at least partially multifilament threads, a mesh size between 4 and 7 mm and a thermosetting type of equipment that is affine to the binding agent of the fibers, heat-releasable, loosely deposited, then a second non-woven layer is sprinkled on the fabric or grid, and then the layers are compressed to a mat, the polyester fabric or grid being used at temperatures such as, correspond to the pressing temperature in the production of molded parts, is annealed.
- polyester fabric is initially due to cost reasons, since other fabrics with comparable physical and chemical properties are more expensive. Also of particular importance are its well-known high tensile strength and, above all, its temperature resistance, even at the pressing temperatures between 180 and 220 ° C required here. The melting point of polyester fabric is above 220 ° C, where it still has the positive property that its tensile strength only decreases slightly in the higher temperature range.
- a disadvantage of polyester fabrics, like almost all other plastic fabrics, is the fact that it exhibits considerable thermal expansion, which, however, is reversible up to high temperatures. However, this would be disadvantageous for the method according to the invention, since the restoring forces in the manufacture of the mat after its heating and compaction would lead to material shifts within the mat, which would loosen the existing bond.
- the polyester fabric is annealed at temperatures which correspond approximately to the pressing temperature. Annealing can take place before or after finishing. As a result, the polyester fabric largely loses its original thermal expansion, with the result that it only comparatively little expands when the fleece is heated before the mat is produced, as well as when the press-molded part is produced, so that the mat or press-molded part are largely free of tension and shrinkage.
- the finishing of the polyester fabric must be heat-activatable in order to at least superficially melt on the warming up of the nonwoven prior to compaction to form a mat and in this way bind the fibers of the lower and upper nonwoven layer.
- the equipment should be selected so that it can still be reactivated sufficiently after the mat has been manufactured, in order to finally fully harden during the pressing process and to fulfill its function as a supporting binder.
- the equipment serves to make the fabric resistant to sliding, so that the individual threads cannot move against one another during all processing operations and the diagonal distortion of the fabric is also minimized.
- the further measure according to the invention acts in the same direction, according to which at least a portion of multifilament threads are present within the polyester fabric.
- these ensure better adhesion of the thermosetting finish, on the other hand, they impart a better bond to the neighboring fibers of the upper and lower nonwoven layer.
- they facilitate - what will be discussed later - the recycling of the waste resulting from forming by trimming, which can then be more easily shredded again and can be used for the production of nonwovens.
- the mesh size of 4 to 7 mm ensures that fiber and binder can be exchanged between the two nonwoven layers. This is further promoted on the basis of the manufacture of the mat by applying negative pressure to the underside of the conveyor belt during the entire nonwoven manufacture.
- This negative pressure initially ensures that the lower nonwoven layer, after passing through a leveling device known per se, maintains a constant thickness and cannot spring open or not significantly.
- the fabric is then placed loosely, which essentially means that the deposit must be tension-free in order to avoid the input of forces here too.
- This fabric is also sucked onto the lower nonwoven layer by the negative pressure, so that it cannot deform or shift after being deposited. The same effect then occurs when the second layer of fleece is sprinkled on.
- the fibers of the upper nonwoven layer are additionally drawn to the lower nonwoven layer by the relatively wide-meshed lattice structure of the fabric due to the negative pressure, so that a bond, even if still loose, is created between the two layers.
- the binders are activated and the fibers are bound at least on the surface. The bond is then further improved during the final compaction to the mat.
- the mat has a significantly better transport and handling strength.
- a mat produced in this way or blanks obtained therefrom can be processed into molded parts of any contour without the use of preforming tools and without separate stabilizing layers.
- the enormous cost and labor savings are obvious.
- the method according to the invention enables an increase in performance of up to 30%.
- the final strength of the molded part is improved, which is also due to the heat stability of the polyester fabric even at higher temperatures temperatures is not reduced. Due to the higher strength, the material density of the molded part and thus its wall thickness can be reduced. This is particularly important when using such molded parts for the interior of motor vehicles, since this can save weight.
- a mat produced according to the invention can be formed in one step in a heated press in the case of simpler molded parts without preheating. Dry preheating will have to be provided for more complicated molded parts. Finally, as already indicated, the waste resulting from trimming by trimming can easily be returned to the nonwoven production.
- the cross section of at least some of the threads of the fabric or grid parallel to the plane of the nonwoven has a greater extent than perpendicular to it.
- these threads can be band-like or oval in cross-section. If not all threads, for example in the warp or in the weft, have this cross-section, they will be provided at least in the central areas of the mat, where generally the greatest deformations occur during pressing.
- the cross-sectional shape has the advantage that the threads do not cut into the material during forming. .
- the fabric or mesh is preferably made of phenol, phenol-resorcinol, melamine resins or styrene-butadiene latex with reactive carboxyl groups (SBR), which can be modified by the aforementioned resins and other additives.
- SBR reactive carboxyl groups
- These resins or latices have the advantage that they can be heat-activated several times under certain circumstances. Otherwise they can also be used in the same form as a binder or as part of a binder system for fibers of different origins.
- the equipment forms a firm bond with the thermoplastic components within the fiber material or the binder under the influence of heat. As a result, the fabric or grid is firmly integrated within the mat.
- the aforementioned selection of materials for the equipment is also important with regard to the recycling of the waste generated during trimming.
- the shredded waste that is returned to the nonwoven production must not contain any components that - if they come to rest on the surface of the nonwoven - show an adhesive effect on the metal surfaces of the pressing tools. This condition is met not only by the polyester of the fabric or grid, but also by the aforementioned materials for the equipment.
- the mat is wound into rolls after compaction and is processed from the roll on the occasion of the production of the press-molded parts by the transport forces directly on the mat or on the resulting after trimming of each molded part, via the remaining fabric or grate in the related waste strips.
- the waste strips resulting from the production of individual blanks as well as from trimming the molded parts can be shredded and added to the shredded waste materials before the nonwoven is formed.
- the invention is based on a known system (DE-PS 28 45112) which has a scattering device which discharges the mixture of shredded waste materials and binders onto an air-permeable conveyor belt, a suction device arranged below the conveyor belt, and a downstream device for leveling the fleece , has a device arranged behind it and above the conveyor belt for passing hot air through the fleece and then pressure rollers acting on the fleece.
- DE-PS 28 45112 a scattering device which discharges the mixture of shredded waste materials and binders onto an air-permeable conveyor belt, a suction device arranged below the conveyor belt, and a downstream device for leveling the fleece , has a device arranged behind it and above the conveyor belt for passing hot air through the fleece and then pressure rollers acting on the fleece.
- This system is modified in accordance with the invention in such a way that a feed device for loosely depositing the polyester fabric or grid is arranged behind the leveling device, a second spreading device for applying the second fleece layer behind it and a further leveling device behind it. wherein the suction device or a plurality of suction devices extend from the first scattering device to the hot air device.
- a winding device for rolling up the mat can be arranged behind the pressure rollers.
- the system initially has a conveyor belt 1, which is permeable to air, for. B. is formed from a fabric or grid. Above the inlet of the conveyor belt 1 into the system, a first scattering device 2 is arranged, which picks up a fiber material and delivers a head 3 via a scattering device onto the conveyor belt to form a first fleece layer 4. Behind the spreading device is a milling-like leveling device 5, which brings the fleece layer 4 to a uniform thickness.
- a feed device for placing an endless polyester fabric or grid 7 on the first nonwoven layer 4.
- the fabric or grid 7 is located on a supply spool, from which it is drawn off by means of pull rollers 9 becomes.
- the fabric or grid runs over guide rollers 10 and a tensioning roller 11.
- the drive of the drawing rollers 9 is adjusted in relation to the speed of the conveyor belt 1 so that the fabric or mesh falls loosely in the area 12 below the drawing rollers 9, so that it is placed on the first nonwoven layer 4 without force.
- a scanning device 13 which shuts down parts of the system if there is no tissue or grid in the area of the scanning device, for example the coil 8 is empty.
- a further scattering device 14 is arranged behind the fabric deposit, which in turn picks up fibers and releases them via a scattering head 15 to form a uniform second fleece layer 16.
- a milling-type leveling device 17 is again arranged behind the spreading device 14.
- a suction device 18 is arranged below the entire conveyor belt 1, at least up to the second leveling device 17, which in the exemplary embodiment shown consists of two suction boxes 19 and 20.
- This suction device ensures a firm support of the first nonwoven layer on the conveyor belt 1, for maintaining the nonwoven thickness, for sucking the fabric or grid 7 onto the first nonwoven layer and finally for the second nonwoven layer 16 to adhere to the grid or fabric 7 and the first nonwoven layer 4.
- the mat (see FIG. 2) reaches a belt scale 21 which measures the specific surface load and controls the second leveling device 17, possibly also the first leveling device 5, according to the desired value.
- the final nonwoven 22 finally reaches a hot air device 23, by means of which hot air is pushed or sucked through the nonwoven to activate the binders.
- a pre-press roll 24 and a press calender 25 are arranged behind the hot air device 23, which reduce the fleece to the desired final thickness.
- the fleece 22 leaves the press calender 25 as a mat 26, which is moved by means of transport rollers 27 through a cooling station 28. Behind the transport rollers 27 there is a trimming device 29 which equalizes the longitudinal edges of the mat 26.
- the resulting edge strips can be comminuted by means of a cutting mill 30 and then bunkered at 31. The material can be withdrawn from the waste bunker 31 as required by the central comminution mill 32, which is used to produce the fibrous material fed to the spreading devices 2 and 14.
- the trimmed mat 27 prepared for further processing can then be wound up into a roll or a wrap or, as FIG. 4 shows, broken down into individual blanks.
- the mat 27 runs on a cutting table 33 with a cross cutter 34. Simultaneously or previously, the mat 27 has been cut in the longitudinal direction, so that two cuts 35 are formed behind the cross cutter 34, which are pivoted onto lateral stacks 37 by means of swiveling suction lifters 36 be filed.
- FIG. 4 also shows the alternative with dash-dotted lines in which the mat 27 is wound up into a roll 38.
- FIG. 3 shows a schematic view of an embodiment for the production of press-molded parts from a mat 27 wound into a roll 38.
- the system has, as an essential component, a molding press 39 with a heated upper tool 40 and a heated lower tool 41. In the embodiment shown, the press stroke is carried out by the upper tool 40.
- a heating furnace 42 is arranged in front of the molding press 39 and there is a separating device 43 behind the molding press 39 and a winding device 44 behind it.
- the mat roll 38 is mounted on a spool 45 in front of the heating furnace 42.
- the mat 27 is withdrawn from the roll 38 in cycles by means of the winding device 44. It first passes through the heating furnace 42 for activating the binding agents and arrives in the molding press 39 in the next working cycle.
- the molding tools 40, 41 are closed, so that a molded part is formed in the mat, which due to its still existing integration into the surrounding mat material is next Work cycle arrives in the separating device 43.
- the molded part 46 is separated from the mat by a punching process and guided away to the side, while the remaining mat is by means of the winding device device 44 is in turn wound up into a roll.
- this material can be fed to a comminution device and then to the plant for the production of fibrous material.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Nonwoven Fabrics (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Claims (7)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19843403670 DE3403670A1 (de) | 1984-02-03 | 1984-02-03 | Verfahren und anlage zum herstellen von fasermatten als ausgangsmaterial fuer pressformteile |
DE3403670 | 1984-02-03 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0152837A2 EP0152837A2 (fr) | 1985-08-28 |
EP0152837A3 EP0152837A3 (en) | 1986-10-22 |
EP0152837B1 true EP0152837B1 (fr) | 1988-07-27 |
Family
ID=6226606
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP85101034A Expired EP0152837B1 (fr) | 1984-02-03 | 1985-02-01 | Procédé et dispositif pour la fabrication de mats de fibres comme matériau de départ pour articles formés à la presse |
Country Status (6)
Country | Link |
---|---|
US (1) | US5023027A (fr) |
EP (1) | EP0152837B1 (fr) |
JP (1) | JPS60180803A (fr) |
BR (1) | BR8500474A (fr) |
DE (2) | DE3403670A1 (fr) |
ES (2) | ES538212A0 (fr) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3439033A1 (de) * | 1984-10-25 | 1986-04-30 | Casimir Kast Gmbh & Co Kg, 7562 Gernsbach | Verfahren und vorrichtung zur herstellung von fasermatten als ausgangsmaterial fuer pressformteile |
DE3516465A1 (de) * | 1985-05-08 | 1986-11-13 | Jürgen 3490 Bad Driburg Buddenberg | Formstreifen oder -staebe aus holzwerkstoff |
DE3775052D1 (de) * | 1987-05-23 | 1992-01-16 | Mario Miani | Verfahren zum herstellen von platten, vorrichtung zur ausfuehrung des verfahrens und erhaltene platten. |
DE3917787C1 (fr) * | 1989-05-29 | 1990-09-27 | Lignotock Gmbh & Co, 7000 Stuttgart, De | |
FR2667622B1 (fr) * | 1990-10-08 | 1994-10-07 | Kaysersberg Sa | Montisse lie hydrauliquement et son procede de fabrication. |
US20020113340A1 (en) * | 1991-03-29 | 2002-08-22 | Reetz William R. | Method of forming a thermoactive binder composite |
US5824246A (en) | 1991-03-29 | 1998-10-20 | Engineered Composites | Method of forming a thermoactive binder composite |
US5302445A (en) * | 1991-08-22 | 1994-04-12 | Leucadia, Inc. | Process for making a reinforced fibrous mat and product made therefrom |
EP0543052A1 (fr) * | 1991-11-22 | 1993-05-26 | CERIT S.a.r.L | Installation pour fabriquer des produits biodégradables et non biodégradables, et procédé correspondant |
US5883140A (en) * | 1993-12-06 | 1999-03-16 | National Rubber L.L.C. | Process for regeneration of rubber |
DE4444206A1 (de) * | 1994-12-13 | 1996-06-20 | Fleissner Maschf Gmbh Co | Verfahren und Vorrichtung zum Veredeln von Krempelvliesen |
CN1106470C (zh) * | 1997-10-13 | 2003-04-23 | M&J纤维技术有限公司 | 一种用于生产塑料纤维和纤维素纤维的纤维网的设备 |
WO2002050354A1 (fr) * | 2000-12-19 | 2002-06-27 | M & J Fibretech A/S | Procede et equipement de production sans bande de base d'une bande de fibres hydro-enchevetrees air-laid |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2543101A (en) * | 1944-07-20 | 1951-02-27 | American Viscose Corp | Composite fibrous products and method of making them |
US2993239A (en) * | 1954-11-08 | 1961-07-25 | Weyerhaeuser Co | Production of integral layered felts |
DE1154260B (de) * | 1958-09-18 | 1963-09-12 | Uranus Trust | Verfahren zur Herstellung von manipulierfaehigen Rohlingen aus wenig formbestaendigen Mischungen aus einem Gemisch von zerkleinertem Grundstoff, insbesondere Holzspaenen, und Bindemitteln |
DE1147746B (de) * | 1958-10-30 | 1963-04-25 | Georges Masse | Verfahren und Vorrichtung zur kontinuierlichen Herstellung einer mit Verstaerkungseinlagen armierten Spanholz-pressplatte fuer Behaelter |
DE1653162A1 (de) * | 1966-07-07 | 1971-04-29 | Friedrich Bilger | Verfahren zur Herstellung armierter Holzstoffplatten und Pressplatten |
US3975483A (en) * | 1967-01-12 | 1976-08-17 | Bernard Rudloff | Process for manufacturing stratified materials |
FR1592545A (fr) * | 1968-05-15 | 1970-05-19 | ||
US3632371A (en) * | 1970-04-24 | 1972-01-04 | Evans Prod Co | Method of making multilayer mat of particulate material |
BE794261A (fr) * | 1972-01-19 | 1973-07-19 | B Projekt Ingf Ab | Procede de fabrication de mats continus en fibres agglomerees |
GB1435703A (en) * | 1972-09-09 | 1976-05-12 | Kroyer St Annes Ltd Karl | Multi-ply paper and paperboard |
US4028288A (en) * | 1976-02-03 | 1977-06-07 | Tire Recyclers International, Inc. | Moldable end products from primarily reclaimable waste materials |
SE412552B (sv) * | 1976-07-05 | 1980-03-10 | Defibrator Fiberboard Ab | Sett och anordning vid framstellning av skivor eller plattor av cellulosa- resp fiber- eller spanmaterial enligt den torra metoden |
US4141772A (en) * | 1977-06-27 | 1979-02-27 | The Procter & Gamble Company | Method and apparatus for forming a continuous reinforced fibrous web |
DE2730750A1 (de) * | 1977-07-05 | 1979-01-18 | Kiss Consulting Eng | Fasermatte zur trockenen herstellung von gepressten formkoerpern |
DE3233385C2 (de) * | 1981-10-02 | 1984-05-17 | Günter Hans 1000 Berlin Kiss | Mehrschicht-Faserverbundstoff und Verfahren zu dessen Herstellung |
-
1984
- 1984-02-03 DE DE19843403670 patent/DE3403670A1/de not_active Withdrawn
- 1984-12-03 ES ES538212A patent/ES538212A0/es active Granted
-
1985
- 1985-02-01 EP EP85101034A patent/EP0152837B1/fr not_active Expired
- 1985-02-01 DE DE8585101034T patent/DE3563924D1/de not_active Expired
- 1985-02-01 US US06/697,452 patent/US5023027A/en not_active Expired - Fee Related
- 1985-02-01 BR BR8500474A patent/BR8500474A/pt not_active IP Right Cessation
- 1985-02-04 JP JP60018813A patent/JPS60180803A/ja active Pending
- 1985-07-15 ES ES545181A patent/ES8702223A1/es not_active Expired
Also Published As
Publication number | Publication date |
---|---|
ES8605722A1 (es) | 1986-01-01 |
ES545181A0 (es) | 1987-01-01 |
US5023027A (en) | 1991-06-11 |
EP0152837A3 (en) | 1986-10-22 |
DE3563924D1 (en) | 1988-09-01 |
JPS60180803A (ja) | 1985-09-14 |
EP0152837A2 (fr) | 1985-08-28 |
ES538212A0 (es) | 1986-01-01 |
DE3403670A1 (de) | 1985-08-08 |
ES8702223A1 (es) | 1987-01-01 |
BR8500474A (pt) | 1985-09-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0152837B1 (fr) | Procédé et dispositif pour la fabrication de mats de fibres comme matériau de départ pour articles formés à la presse | |
EP0179301B1 (fr) | Procédé et appareil pour la fabrication de nappes de fibres comme produit de départ pour articles moulés | |
WO1989003288A1 (fr) | Procede de fabrication de panneaux de particules de bois et similaires et presses a double bande pour ce procede | |
DE3539573A1 (de) | Verfahren zur herstellung dreidimensionaler versteifungsteile aus schmelzbarem kunststoffpulver und aufbringen dieser teile auf substrate, insbesondere leder | |
WO1993004226A1 (fr) | Materiau composite renforce par des fibres a base de non-tisses de fibres naturelles, ainsi que procede pour sa fabrication et sa transformation en continu en pieces extrudees | |
EP0683024B1 (fr) | Procédé de fabrication de corps moulés | |
DE1172424B (de) | Verfahren zur Herstellung gewellter Holzwerkstoffplatten | |
EP2737987B1 (fr) | Procédé et dispositif de fabrication d'une pièce d'habillage intérieur | |
EP0688644A2 (fr) | Pièce moulée et son procédé de fabrication | |
EP2125438B1 (fr) | Procédé et dispositif de fabrication d'un élément moulé et élément moulé servant d'élément d'isolation thermique et/ou phonique | |
DE3420132A1 (de) | Vorrichtung und verfahren zum herstellen einer platte | |
EP0340691A2 (fr) | Méthode et dispositif de fabrication d'une nappe de fibres | |
WO2003033226A1 (fr) | Mat de fibres, piece moulee obtenue a partir dudit mat et procede permettant de le produire | |
EP0688643A2 (fr) | Pièce moulée et son procédé de fabrication | |
DE2713527B2 (de) | Vorrichtung zur Herstellung von Formkörpern aus mit Bindemittel gemischten partikelförmigen Werkstoffen | |
DE3935689A1 (de) | Verfahren und vorrichtung zum herstellen von kraftfahrzeuginnenverkleidungsteilen | |
DE102004053131A1 (de) | Flächiges Halbzeug aus einem Faserverbundwerkstoff und Verfahren zur Herstellung eines Formteils | |
WO2017140752A1 (fr) | Procédé et dispositif pour produire des préformes tridimensionnelle lors de la production de pièces moulées renforcées par des fibres et préforme | |
DE4212732A1 (de) | Verfahren zur Herstellung eines Formteils mit verstärkenden Einlagen sowie Halbzeug für ein derartiges Formteil | |
DE3721663C2 (fr) | ||
DE19608947A1 (de) | Verrottbares Formteil und Verfahren zur Herstellung eines derartigen Formteils | |
DE3419247C2 (fr) | ||
DE4342789C2 (de) | Verfahren zum Herstellen von Formteilen | |
DE19619463A1 (de) | Tiefziehfähiges Material, insbesondere für Verpackungszwecke, und Verfahren zur Herstellung eines derartigen Materials | |
DE19818406C1 (de) | Verfahren zum Herstellen einer Wellplatte |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Designated state(s): DE FR IT |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): DE FR IT |
|
17P | Request for examination filed |
Effective date: 19861204 |
|
17Q | First examination report despatched |
Effective date: 19871229 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE FR IT |
|
REF | Corresponds to: |
Ref document number: 3563924 Country of ref document: DE Date of ref document: 19880901 |
|
ET | Fr: translation filed | ||
ITF | It: translation for a ep patent filed |
Owner name: DR. ING. A. RACHELI & C. |
|
PLBI | Opposition filed |
Free format text: ORIGINAL CODE: 0009260 |
|
26 | Opposition filed |
Opponent name: LIGNOTOCK GMBH Effective date: 19890427 |
|
ITTA | It: last paid annual fee | ||
PLBN | Opposition rejected |
Free format text: ORIGINAL CODE: 0009273 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: OPPOSITION REJECTED |
|
27O | Opposition rejected |
Effective date: 19901224 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 19950228 Year of fee payment: 11 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19950427 Year of fee payment: 11 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Effective date: 19961031 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Effective date: 19961101 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |