EP0197255B1 - Méthode pour produire un corps profilé et moulé - Google Patents

Méthode pour produire un corps profilé et moulé Download PDF

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Publication number
EP0197255B1
EP0197255B1 EP86101495A EP86101495A EP0197255B1 EP 0197255 B1 EP0197255 B1 EP 0197255B1 EP 86101495 A EP86101495 A EP 86101495A EP 86101495 A EP86101495 A EP 86101495A EP 0197255 B1 EP0197255 B1 EP 0197255B1
Authority
EP
European Patent Office
Prior art keywords
mixture
pressed
press
pressing tool
webs
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
EP86101495A
Other languages
German (de)
English (en)
Other versions
EP0197255A1 (fr
Inventor
Edmund Munk
Hermann Henke
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.)
Werzalit - Werke Jf Werz KG
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 AT86101495T priority Critical patent/ATE69193T1/de
Publication of EP0197255A1 publication Critical patent/EP0197255A1/fr
Application granted granted Critical
Publication of EP0197255B1 publication Critical patent/EP0197255B1/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
    • B27N5/02—Hollow articles

Definitions

  • the invention relates to a device for producing molded parts from a non-rising mixture of lignocellulose-containing particles and a binder with a lower press part serving to hold the mixture to be pressed, with a substantially horizontal base and vertical side surfaces and an upper press part with one under Angle to the vertical side surface.
  • Such a device is known (DE - B - 2 035 053).
  • This known device is created for the production of such molded parts in which one or more surfaces connect at a steep angle to a horizontal or approximately horizontal surface.
  • Such molded parts are, for example, the cup-shaped hollow feet of such pallets, which are pressed in one piece from a non-rising mixture.
  • the known device has a press tool lower part which receives the mixture to be pressed, in which a bevel provided with a multiplicity of small steps adjoins a horizontal base area. If the hollow foot to be pressed is to have an edge at the upper end, then a horizontal and a vertical surface follows at the upper end of the slope.
  • 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 melamine-urea-formaldehyde or phenol-formaldehyde resin.
  • a thermosetting synthetic resin such as a melamine-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 one another, to which appropriate, preferably organic binders have been added can also be used.
  • the molding is pressed in such a way that the lower part of the pressing tool is evenly filled with a certain amount of the mixture up to a certain height.
  • the fill level is approximately two to seven times the thickness of the molded part. If the molded part is one that should not be provided with a decorative surface, then it is pressed in one operation and cured by the application of heat. If the molded part is provided with a decorative surface, a pre-compact is first produced from the mixture in a first pressing process and is compacted almost to the final volume of the molded part. This pre-compact is then removed from the pre-press, placed together with decorative surface coatings in another press and finished pressed therein.
  • the technical problem on which the invention is based is to further develop the device described at the outset in such a way that very strongly structured molded parts can be produced using a press consisting only of the lower part of the pressing tool and the upper part of the pressing tool.
  • Such a molded part is, for example, a square or rectangular lattice grid - ceiling element, which consists of crosswise arranged and merging profile webs, the profile webs having a very strongly structured cross section, which for example consists of a uniform square, rectangular or trapezoidal base and one or more on one There are webs attached to the base.
  • Fig. 1 shows the cross section of the object which is to be pressed in the simplest possible way from the mixture described above.
  • This cross section has a rectangular base 1, which is continued on the sides of the surface in webs 2.
  • this disadvantage is eliminated in that the profile body is pressed in a press tool lower part 3 according to FIG. 3.
  • the pressing tool lower part 3 according to FIG. 3 differs from the pressing tool lower part 3 according to FIG. 2 in that the steps 7 narrowing the filling space in this area are arranged on its bottom. These steps 7 have a similar shape to the webs 2. If these steps 7 are arranged in the press tool lower part 3, this can even be provided with the mixture filling 5 at a uniform height, as can be seen from FIG. 3.
  • the step or the steps 7 in the lower part of the press tool have the effect that a sufficient amount of the mixture is held in the area of the webs 2 to be pressed, so that the finished webs 2 have a sufficient density.
  • Fig. 3 in which the upper final dimension 10 of the finished profile body is shown in dashed lines.
  • the profile body is now pressed from the mixture filling 5 by lowering the pressing tool upper part 4, a profile body with the cross section according to FIG. 4 is produced.
  • this profile body has the distinctive webs 2, only the base 1 has two undercuts 8 which, however, do not affect the profile body in any way. Rather, the webs 2 now also have the same density and mechanical properties as the base 1.
  • the underside of the base 1 of the profile body can also be provided with depressions, for example channel-like depressions.
  • FIGS. 5 and 6 show an application example for a profile body produced according to the invention.
  • 5 shows the longitudinal section through half of a lattice grid ceiling element.
  • this lattice grid ceiling element which consists of a plurality of cross-shaped profiles 9, the cross section of the profiles 9 contains a block-shaped base 1 and at least one web 2.
  • the profile body has sharp edges. According to the invention, however, the same profile bodies can also be produced with rounded edges.

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)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Finishing Walls (AREA)
  • Floor Finish (AREA)

Claims (1)

  1. Dispositif de fabrication de pièces moulées à partir d'un mélange non expansible de particules contenant de la lignocellulose et d'un liant, comportant une partie de presse inférieure servant à recevoir le mélange à comprimer et pourvue d'une surface de base s'étendant sensiblement horizontalement et de surfaces latérales verticales, et une partie de presse supérieure pourvue d'une surface latérale s'étendant suivant un certain angle par rapport à la verticale, caractérisé en ce qu'il est simplement prévu, entre la surface de base et l'une des surfaces latérales verticales correspondante, un épaulement (7) rétrécissant l'espace de remplissage.
EP86101495A 1985-04-10 1986-02-05 Méthode pour produire un corps profilé et moulé Expired - Lifetime EP0197255B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86101495T ATE69193T1 (de) 1985-04-10 1986-02-05 Verfahren zur herstellung eines gepressten profilkoerpers.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US72218685A 1985-04-10 1985-04-10
US722186 1985-04-10

Publications (2)

Publication Number Publication Date
EP0197255A1 EP0197255A1 (fr) 1986-10-15
EP0197255B1 true EP0197255B1 (fr) 1991-11-06

Family

ID=24900823

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86101495A Expired - Lifetime EP0197255B1 (fr) 1985-04-10 1986-02-05 Méthode pour produire un corps profilé et moulé

Country Status (5)

Country Link
EP (1) EP0197255B1 (fr)
JP (1) JPS61237602A (fr)
AT (1) ATE69193T1 (fr)
CA (1) CA1266755A (fr)
DE (1) DE3682308D1 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE759351A (fr) * 1970-07-15 1971-04-30 Werz Furnier Sperrholz Procede et dispositif utilise pour presser une piece moulee en particules collees de lignocellulose
DE2217792C3 (de) * 1972-04-13 1979-07-19 Furnier- Und Sperrholzwerk J.F. Werz Jr. Kg Werzalit-Pressholzwerk, 7141 Oberstenfeld Presse zur Herstellung von FormteUen
JPS5214782U (fr) * 1976-06-29 1977-02-02
US4440708A (en) * 1978-12-21 1984-04-03 Board Of Control Of Michigan Technological University Method for molding articles having non-planar portions from matted wood flakes

Also Published As

Publication number Publication date
ATE69193T1 (de) 1991-11-15
DE3682308D1 (de) 1991-12-12
CA1266755A (fr) 1990-03-20
EP0197255A1 (fr) 1986-10-15
JPS61237602A (ja) 1986-10-22

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