EP0257106B1 - Procédé et dispositif pour la fabrication d'objets profilés à partir de fibres encollées - Google Patents

Procédé et dispositif pour la fabrication d'objets profilés à partir de fibres encollées Download PDF

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Publication number
EP0257106B1
EP0257106B1 EP86110333A EP86110333A EP0257106B1 EP 0257106 B1 EP0257106 B1 EP 0257106B1 EP 86110333 A EP86110333 A EP 86110333A EP 86110333 A EP86110333 A EP 86110333A EP 0257106 B1 EP0257106 B1 EP 0257106B1
Authority
EP
European Patent Office
Prior art keywords
pressing tool
tool part
opening
blow
fibers
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 - Lifetime
Application number
EP86110333A
Other languages
German (de)
English (en)
Other versions
EP0257106A1 (fr
Inventor
Edmund Munk
Martin Dietz
Bernd Asseier
Helmuth Huber
Kurt Zimmermann
Original Assignee
Werzalit - Werke Jf Werz KG
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 Werzalit - Werke Jf Werz KG filed Critical Werzalit - Werke Jf Werz KG
Priority to DE8686110333T priority Critical patent/DE3681447D1/de
Priority to EP86110333A priority patent/EP0257106B1/fr
Priority to AT86110333T priority patent/ATE67113T1/de
Publication of EP0257106A1 publication Critical patent/EP0257106A1/fr
Application granted granted Critical
Publication of EP0257106B1 publication Critical patent/EP0257106B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B27N5/00—Manufacture of non-flat articles
    • 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
    • B27N3/086—Presses with means for extracting or introducing gases or liquids in the mat

Definitions

  • the invention relates to a process for the production of profiled bodies from dry or low-moisture glued fibers by filling into the press space of a plate press consisting at least of the upper press part and the lower press part and subsequent compression in the plate press, the glued fibers being passed in an air stream in the closed,
  • the size of the press bulk space corresponding to the bulk volume of the profile body is blown in, which has at least one blowing opening and at least one blowing opening covered with a sieve, and the glued fibers are then compressed by moving the upper press part in the direction of the lower press part.
  • the fibers can, for example, be a fibrous material which is produced from particles containing cellulose or lignocellulose in such a way that they are digested with steam, hot water or weak alkalis and defibrated in defibrators and then dried.
  • other fibers such as glass fibers, can also be processed with the method according to the invention.
  • thermosetting synthetic resins it is known from such fibers, which have previously been glued with thermosetting synthetic resins, to produce thin-walled plates or profile bodies in thicknesses of 1 to 5 mm for use in vehicle construction, in the furniture industry or in the electrical engineering industry.
  • the procedure is such that only slightly compressed, flat mats are produced, which are then pressed in a second operation in a press with simultaneous supply of heat to the finished profile body.
  • the fiberboard is already fully cured. These are softened again by applying moisture and heat and then pressed into the finished profile body in a press.
  • the object on which the invention is based is therefore to specify a method and an apparatus which make it possible to produce profile bodies from glued fibers directly and without major outlay on equipment.
  • the upper press part is shaped such that it overlaps the lower press part on all sides and thus forms the press space, and that the injection opening and the blow-out opening are arranged in the side parts of the upper press part which overlap the lower press part, and in that the blowing process is carried out at press upper part placed on the lower press part.
  • the fibers can be blown into the volume in a uniform or deliberately non-uniform distribution and pressed to the profiled body immediately after the volume has been filled.
  • the profile bodies to be produced have a strongly structured shape or if they are to have different densities at different locations, it has proven to be expedient to glue the glued fibers in the press in which they were blown in only to a part of the desired final density compress it into a pre-compact, take it out of this press, insert it into a second press and finish it there with the addition of heat to final density.
  • FIGS. 1 and 2 The exemplary embodiment of a device for carrying out the method according to the invention is illustrated in FIGS. 1 and 2.
  • the press shown has a fixed pressing tool lower part 1 and a pressing tool upper part 2, which can be moved in the direction of arrow 3 towards the pressing tool lower part 1 and away from it.
  • Fig. 1 the press is shown in the open state; then the volume 4 to be filled with the glued fibers is present between the pressing tool lower part 1 and the pressing tool upper part 2.
  • This volume 4 is delimited on the left side by the injection opening 5, through which the glued fibers transported in a compressed air line are blown into the volume.
  • the counterpart to the blowing opening namely the blowing opening 7 closed with a sieve 6, can be seen, through which the air which is no longer required can be discharged or possibly even extracted.
  • the press can be provided with several blow-out openings which are connected to a common exhaust line 8.
  • the blow-out openings can be used in different ways to fill the fibers into the volume either uniformly or specifically non-uniformly (for the purpose of producing different densities in the profile body). For this purpose, they can have different cross sections, for example. However, it is also possible to provide the suction openings with devices, such as flaps, which allow the cross-section to be changed continuously. The same effect can be achieved by connecting suction devices with controllable negative pressure to the suction openings.
  • the pressing tool lower part 2 is provided with a plurality of channels 9 of small cross-section, which are connected to the atmosphere, but can also be acted upon by compressed air. If the channels 9 are in connection with the atmosphere, then they prevent a vacuum formation below the pressed profile body, which prevent it from being released from the lower part of the pressing tool. If the channels 9 are pressurized with compressed air after the pressing process, then the pressed profile body is raised and can be easily removed from the press.

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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)

Claims (7)

  1. Procédé pour fabriquer des objets profilés à partir de fibres encollées sèches ou ne présentant qu'une faible humidité, par remplissage de la chambre de compression à l'aide d'une presse à plateau comprenant au moins un élément supérieur (2) et un élément inférieur (1) de presse, puis par compression dans la presse à plateau, les fibres encollées étant injectées dans un courant d'air dans la chambre de compression fermée, dont la taille correspond au volume de fibres apparent de l'objet profilé, et qui possède un ou plusieurs orifices d'injection (5) et un ou plusieurs orifices d'évacuation couverts par un filtre (6), les fibres encollées étant ensuite comprimées grâce à un mouvement de l'élément supérieur (2) de la presse en direction de l'élément inférieur (1) de la presse, caractérisé en ce que l'élément supérieur (2) de la presse est formé de manière à déborder de tous les côtés l'élément inférieur (1) de la presse et définit ainsi la chambre de compression, en ce que les orifices d'injection (5) et d'éjection (7) sont disposés dans les parties latérales de l'élément supérieur de la presse qui débordent l'élément inférieur (1) de la presse, et en ce que l'opération de soufflage se passe au niveau de l'élément supérieur (2) de la presse placé sur l'élément inférieur (1) de la presse.
  2. Procédé selon la revendication 1, caractérisé en ce que les fibres encollées sont comprimées dans la presse jusqu'à obtention d'une partie seulement de l'épaisseur finale souhaitée, pour former une ébauche, sont ensuite enlevées de la presse et mises dans une seconde presse et là, moyennant une amenée de chaleur, sont moulées définitivement jusqu'à obtention de l'épaisseur finale
  3. Procédé selon les revendications 1 et 2, caractérisé en ce que l'ébauche est pourvue, dans la seconde presse, d'une épaisseur différente suivant les endroits.
  4. Dispositif pour mettre en oeuvre le procédé selon la revendication 1, comportant une presse formée d'un élément inférieur (1) d'outil de compression et d'un élément supérieur (2) d'outil de compression, un orifice d'injection (5) pour amener le mélange d'air et de fibres encollées dans la chambre de compression, et un orifice d'évacuation (7), prévu au niveau de la chambre de compression et couvert par un filtre (6), caractérisé en ce que l'élément supérieur (2) d'outil de compression déborde l'élément inférieur (1) d'outil de compression moyennant la formation d'une chambre de compression, et les orifices d'injection (5) et d'éjection (7) sont disposés dans les parties latérales de l'élément supérieur (2) de l'outil de compression qui débordent.
  5. Dispositif selon la revendication 4, caractérisé en ce que plusieurs orifices d'aspiration de sections transversales différentes sont prévus.
  6. Dispositif selon les revendications 4 et 5, caractérisé en ce que les orifices d'aspiration sont pourvus d'une section transversale variable et/ou sont sollicités par une dépression variable.
  7. Dispositif selon les revendications 4 à 6, caractérisé en ce qu'il est prévu, dans le fond d'un ou plusieurs éléments d'outil de compression, des canaux (9) de faible section transversale, en contact avec l'atmosphère ou reliés à une source d'air sous pression.
EP86110333A 1986-07-26 1986-07-26 Procédé et dispositif pour la fabrication d'objets profilés à partir de fibres encollées Expired - Lifetime EP0257106B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE8686110333T DE3681447D1 (de) 1986-07-26 1986-07-26 Verfahren und vorrichtung zur herstellung von profilkoerpern.
EP86110333A EP0257106B1 (fr) 1986-07-26 1986-07-26 Procédé et dispositif pour la fabrication d'objets profilés à partir de fibres encollées
AT86110333T ATE67113T1 (de) 1986-07-26 1986-07-26 Verfahren und vorrichtung zur herstellung von profilkoerpern.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP86110333A EP0257106B1 (fr) 1986-07-26 1986-07-26 Procédé et dispositif pour la fabrication d'objets profilés à partir de fibres encollées

Publications (2)

Publication Number Publication Date
EP0257106A1 EP0257106A1 (fr) 1988-03-02
EP0257106B1 true EP0257106B1 (fr) 1991-09-11

Family

ID=8195294

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86110333A Expired - Lifetime EP0257106B1 (fr) 1986-07-26 1986-07-26 Procédé et dispositif pour la fabrication d'objets profilés à partir de fibres encollées

Country Status (3)

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EP (1) EP0257106B1 (fr)
AT (1) ATE67113T1 (fr)
DE (1) DE3681447D1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2700138B1 (fr) * 1993-01-06 1995-03-10 Charles Weisskopf Procédé et dispositif pour la production d'articles par compactage de fibres ou granulés à l'aide d'un courant d'air et articles ainsi produits.
AT407407B (de) * 1998-11-03 2001-03-26 Mcguire Sean Verfahren zur herstellung eines formkörpers aus cellulosefasern sowie verfahren zur herstellung von papier oder platten aus cellulosefasern
CN112757466B (zh) * 2020-12-28 2022-06-21 苏州础润生态科技有限公司 一种用于装配式水池的内外模浇注装置及其工作方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE258633C (fr) *
DE1213110B (de) * 1963-12-21 1966-03-24 Arnold Adler Dipl Ing Verfahren, Anordnung und Presse zum Pressen von Spanformkoerpern groesserer Ausdehnung
DE1210550B (de) * 1964-01-18 1966-02-10 Werz Furnier Sperrholz Verfahren und Vorrichtung zur Herstellung von in mehreren Dimensionen verformten Teilen aus zerkleinerten organischen Faserstoffen, z. B. Holzspaenen, und einem Bindemittel
FR1492401A (fr) * 1965-08-17 1967-08-18 Basf Ag Procédé et dispositif pour l'obtention de pièces moulées en mousse
FR1542605A (fr) * 1966-07-29 Werz Furnier Sperrholz Procédé pour remplir les moules dans le moulage à la presse et dispositif pour lamise en oeuvre de ce procédé
US3664799A (en) * 1969-11-04 1972-05-23 American Standard Inc Powder compacting press

Also Published As

Publication number Publication date
EP0257106A1 (fr) 1988-03-02
DE3681447D1 (de) 1991-10-17
ATE67113T1 (de) 1991-09-15

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