EP0084074A1 - Procédé de fabrication d'objets pressés en forme à partir d'un mélange non expansible - Google Patents
Procédé de fabrication d'objets pressés en forme à partir d'un mélange non expansible Download PDFInfo
- Publication number
- EP0084074A1 EP0084074A1 EP82100334A EP82100334A EP0084074A1 EP 0084074 A1 EP0084074 A1 EP 0084074A1 EP 82100334 A EP82100334 A EP 82100334A EP 82100334 A EP82100334 A EP 82100334A EP 0084074 A1 EP0084074 A1 EP 0084074A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- moulding
- shaped
- container
- filled
- molding compound
- 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.)
- Granted
Links
- 239000000203 mixture Substances 0.000 title description 7
- 238000004519 manufacturing process Methods 0.000 title description 3
- 238000000465 moulding Methods 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 7
- 239000011230 binding agent Substances 0.000 claims abstract description 4
- 238000003825 pressing Methods 0.000 claims description 25
- 150000001875 compounds Chemical class 0.000 claims description 17
- 230000000630 rising effect Effects 0.000 abstract description 6
- 239000000206 moulding compound Substances 0.000 abstract 5
- 230000003534 oscillatory effect Effects 0.000 abstract 1
- 239000002245 particle Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 239000000835 fiber Substances 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 241000609240 Ambelania acida Species 0.000 description 2
- 239000010905 bagasse Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 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
- B27N5/00—Manufacture of non-flat articles
Definitions
- the invention relates to a method for producing a nonwoven from a pourable, but not or only poorly climbable, chip or fibrous molding compound, mixed with a binder, in a press mold for the subsequent pressing of a profile body using a box-shaped, with the molding compound, which can be placed on a pressing tool lower part filled container with a sieve-shaped bottom, from which the molding compound reaches the lower part of the press tool by a swinging movement of the sieve bottom.
- Such a method is known (DE - PS 26 18 599 or DE - OS 26 21 717). It is used extensively for the production of such nonwovens, from which profile bodies such as table tops, window sills, pallets and the like. Like. Be pressed. Depending on the shape and properties of the finished profile body, the non-rising mixture is either in one if possible evenly thick or deliberately different layers in certain places in a press tool lower part. The layer thickness of the mixture in the lower part of the pressing tool is usually three to seven times the finished profile body. The mixture filled into the lower part of the press tool is pre-pressed by moving in a press ram and almost compressed to its final dimensions.
- the strength of the preform produced in this way is sufficient to prevent deformation or breakage when it is removed from the pressing tool, which has served as a pre-pressing tool in the two-stage pressing process.
- the pre-compact is then, optionally with simultaneous covering with a decorative film, inserted into a further pressing tool, a hot pressing tool, through which the pre-compact obtains its final shape during the subsequent pressing under the action of pressure and heat, thereby curing and possibly simultaneously with the decorative layer is enveloped.
- the non-rising mixture usually consists of lignocellulosic fibrous materials, such as shredded and dried wood chips, bagasse fibers and the like, which are mixed with a thermosetting synthetic resin, such as a malamine-urea-formaldehyde or phenol-formaldehyde resin.
- a thermosetting synthetic resin such as a malamine-urea-formaldehyde or phenol-formaldehyde resin.
- fibers of other materials such as glass fibers, rock wool or asbestos fibers, alone or several of them mixed with each other, to which appropriate, preferably organic, binders have been added.
- the lower part of the pressing tool is filled in such a way that the container filled with the non-rising mixture is placed on the lower part of the pressing tool. If the sieve-shaped bottom, for example by a vibrating drive, is set in oscillating motion, then the non-rising mixture in the container trickles gradually into the free space of the pressing tool lower part, the upper opening of which is delimited by the sieve-shaped bottom, until a complete one Filling of the press tool lower part is achieved. If the vibrating drive is not immediately switched off after the filling of the pressing tool lower part has been completed, then only fine molding compound particles can get into the pressing tool lower part if the sieve bottom is designed accordingly and the movement carried out by it.
- the object underlying the invention is therefore to further develop the known method according to the preamble of claim 1 in such a way that the consequences of the inhomogeneous distribution of the resin content in the profile body are avoided or compensated.
- This object is achieved in that the volume of the pressing tool lower part is reduced in such a way that there is a very small distance between the bottom of the pressing tool lower part and the sieve bottom, then the container filled with molding compound is placed hard on the pressing tool lower part and only then the volume of the pressing tool lower part enlarged to the required extent and the molding compound is filled into this volume in a manner known per se.
- the device shown in Fig. 1 consists of the fitting on the press tool lower part 2 box-shaped container 1, at the lower end of which the sieve-shaped base 3, which is provided with a plurality of openings, is fastened.
- a resilient suspension of the container 1 is realized in the device shown in that the container 1 is attached to the frame 5 by means of the rubber damper 4, in which metallic fastening aids are embedded.
- the vibrating drive 7 is fastened, which should preferably move the container 1 suddenly in a horizontal plane, wherein the vibrating movement itself can have a circular, elliptical or other shape.
- the pressing tool lower part 2 consists of the side part 8 and the bottom 9, which is formed in one piece in the exemplary embodiment shown.
- the side part 8 and bottom 9 can be moved relative to one another, the bottom 9 being arranged, for example, in a fixed manner, while the side part 9 is vertically displaceable by a certain distance.
- Fig. 1 the starting position of side part 8 and bottom 9 is shown, i.e. the side part 8 has been moved into its lowermost position, so that there is only a small distance between the sieve-shaped base 3 and the surface of the base 9.
- the side part 8 is moved into the high position which corresponds to the desired filling volume in the lower press part 2.
- the space between floor 9 and sieve-shaped floor 3 is then filled in a manner known per se, a fleece being produced in which both the lower outer surface and the upper outer surface consist of a thin layer of fine molding compound particles.
- the profile body pressed from such a fleece shows no tendency to unevenness.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Confectionery (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT82100334T ATE17204T1 (de) | 1982-01-19 | 1982-01-19 | Verfahren zur herstellung von gepressten profilkoerpern aus einem nicht steigfaehigen gemisch. |
| DE8282100334T DE3268198D1 (en) | 1982-01-19 | 1982-01-19 | Method of manufacturing pressed shaped articles of a non-expandable composition |
| EP82100334A EP0084074B1 (fr) | 1982-01-19 | 1982-01-19 | Procédé de fabrication d'objets pressés en forme à partir d'un mélange non expansible |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP82100334A EP0084074B1 (fr) | 1982-01-19 | 1982-01-19 | Procédé de fabrication d'objets pressés en forme à partir d'un mélange non expansible |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0084074A1 true EP0084074A1 (fr) | 1983-07-27 |
| EP0084074B1 EP0084074B1 (fr) | 1986-01-02 |
Family
ID=8188828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP82100334A Expired EP0084074B1 (fr) | 1982-01-19 | 1982-01-19 | Procédé de fabrication d'objets pressés en forme à partir d'un mélange non expansible |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0084074B1 (fr) |
| AT (1) | ATE17204T1 (fr) |
| DE (1) | DE3268198D1 (fr) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5264170A (en) * | 1990-04-08 | 1993-11-23 | Caledonia Composites Limited | Method of manufacturing pultruded profiles |
| EP0970788A1 (fr) * | 1998-07-10 | 2000-01-12 | Werzalit Ag + Co. | Installation et procédé de fabrication d'un mat à partir d'une masse de moulage fibreux |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE942478C (de) * | 1953-06-25 | 1956-05-03 | Formholz G M B H | Verfahren zur Herstellung von bearbeitbaren Kunstholzformteilen oder -platten aus feinem Holzmehl |
| DE942479C (de) * | 1951-02-15 | 1956-05-03 | Bartrev Ltd | Vorrichtung zur Aufbringung einer Matte oder Lage aus zerkleinertem Material, insbesondere Holzspaenen od. dgl., auf eine Tragflaeche |
| DE1929465A1 (de) * | 1969-06-10 | 1970-12-23 | Andre Mark | Vorrichtung zur Herstellung von Holzfaserplatten |
| DE2709467B2 (de) * | 1977-03-04 | 1979-06-21 | Furnier- Und Sperrholzwerk J.F. Werz Jr. Kg Werzalit-Pressholzwerk, 7141 Oberstenfeld | Verfahren und Vorrichtung zur Herstellung einer Matte aus nicht fließfähiger Preßmasse für Preßkörper |
| DE2618599C3 (de) * | 1976-04-28 | 1979-08-09 | Furnier- Und Sperrholzwerk J.F. Werz Jr. Kg Werzalit-Pressholzwerk, 7141 Oberstenfeld | Vorrichtung zum dosierten Füllen stationärer Preßformen |
-
1982
- 1982-01-19 AT AT82100334T patent/ATE17204T1/de not_active IP Right Cessation
- 1982-01-19 EP EP82100334A patent/EP0084074B1/fr not_active Expired
- 1982-01-19 DE DE8282100334T patent/DE3268198D1/de not_active Expired
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE942479C (de) * | 1951-02-15 | 1956-05-03 | Bartrev Ltd | Vorrichtung zur Aufbringung einer Matte oder Lage aus zerkleinertem Material, insbesondere Holzspaenen od. dgl., auf eine Tragflaeche |
| DE942478C (de) * | 1953-06-25 | 1956-05-03 | Formholz G M B H | Verfahren zur Herstellung von bearbeitbaren Kunstholzformteilen oder -platten aus feinem Holzmehl |
| DE1929465A1 (de) * | 1969-06-10 | 1970-12-23 | Andre Mark | Vorrichtung zur Herstellung von Holzfaserplatten |
| DE2618599C3 (de) * | 1976-04-28 | 1979-08-09 | Furnier- Und Sperrholzwerk J.F. Werz Jr. Kg Werzalit-Pressholzwerk, 7141 Oberstenfeld | Vorrichtung zum dosierten Füllen stationärer Preßformen |
| DE2709467B2 (de) * | 1977-03-04 | 1979-06-21 | Furnier- Und Sperrholzwerk J.F. Werz Jr. Kg Werzalit-Pressholzwerk, 7141 Oberstenfeld | Verfahren und Vorrichtung zur Herstellung einer Matte aus nicht fließfähiger Preßmasse für Preßkörper |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5264170A (en) * | 1990-04-08 | 1993-11-23 | Caledonia Composites Limited | Method of manufacturing pultruded profiles |
| EP0970788A1 (fr) * | 1998-07-10 | 2000-01-12 | Werzalit Ag + Co. | Installation et procédé de fabrication d'un mat à partir d'une masse de moulage fibreux |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE17204T1 (de) | 1986-01-15 |
| EP0084074B1 (fr) | 1986-01-02 |
| DE3268198D1 (en) | 1986-02-13 |
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| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
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