WO2003061938A1 - Procede et dispositif de production de baguettes decoratives, notamment de baguettes decoratives d'angle, a partir de panneaux en mousse de polystyrene - Google Patents

Procede et dispositif de production de baguettes decoratives, notamment de baguettes decoratives d'angle, a partir de panneaux en mousse de polystyrene Download PDF

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Publication number
WO2003061938A1
WO2003061938A1 PCT/EP2003/000475 EP0300475W WO03061938A1 WO 2003061938 A1 WO2003061938 A1 WO 2003061938A1 EP 0300475 W EP0300475 W EP 0300475W WO 03061938 A1 WO03061938 A1 WO 03061938A1
Authority
WO
WIPO (PCT)
Prior art keywords
blank
stamp
strips
decorative
blanks
Prior art date
Application number
PCT/EP2003/000475
Other languages
German (de)
English (en)
Inventor
Bernd Friemuth
Original Assignee
Infra-Folienkabel 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 Infra-Folienkabel Gmbh filed Critical Infra-Folienkabel Gmbh
Publication of WO2003061938A1 publication Critical patent/WO2003061938A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/3415—Heating or cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/56—After-treatment of articles, e.g. for altering the shape
    • B29C44/5627—After-treatment of articles, e.g. for altering the shape by mechanical deformation, e.g. crushing, embossing, stretching
    • B29C44/5636—After-treatment of articles, e.g. for altering the shape by mechanical deformation, e.g. crushing, embossing, stretching with the addition of heat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/02—Bending or folding
    • B29C53/04—Bending or folding of plates or sheets
    • B29C53/06—Forming folding lines by pressing or scoring
    • B29C53/063—Forming folding lines by pressing or scoring combined with folding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/80—Component parts, details or accessories; Auxiliary operations
    • B29C53/84—Heating or cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2025/00—Use of polymers of vinyl-aromatic compounds or derivatives thereof as moulding material

Definitions

  • the invention relates to a method for producing decorative strips, in particular corner decorative strips, from extruded polystyrene foam, in which method at least one surface of the corner decorative strip is deformed under the action of pressure and heat by means of a heated stamp having an adhesion-preventing coating.
  • the invention further relates to a device for performing the method.
  • corner trim strips made of polystyrene are increasingly being used, which are intended to visually embellish and clad the corner zones along the ceiling. They create a covering of the angle between the walls and the ceiling in every room.
  • the corner decor strips have decor deformations on their visible surface, such as continuous tendril pattern and many others.
  • Decorative corner strips are also available that have a smooth surface without a decorative pattern.
  • the well-known corner decor strips form an angle that covers the corner along the ceiling and thus one Use angular surface to cover the ceiling, while the other angular surface serves to cover the wall surface.
  • the back of the two angular surfaces serves as an adhesive surface for assembly.
  • corner decor strips made of polystyrene are known.
  • the corner decor strips are thermally cut from a block-foamed material, so that porous surfaces are created that can give the impression of a cheap foam product, even after installation.
  • corner decor strips made of polystyrene are manufactured in a known individual molding process. After each mold filling with pre-expanded polystyrene beads, the mold is steam-cooled, the part is removed, the mold is closed, pre-foamed material is injected - the mold is steamed again and cooled again.
  • the corner trim strips produced in this way are very expensive to manufacture and require high investment costs in order to be able to start production at all. In addition, the production output is low due to the circumstances described above.
  • the bar shows because of the surface skin of the extruded material has a very smooth and even surface.
  • the above profile extrusion also forms the surface in such a way that a comparison can be made with a smooth plaster surface.
  • Another object of the invention is to enable the production of corner decorative strips with a low, easily manageable technical outlay and with low capital outlay.
  • This object is achieved by a process for the production of decorative strips, in particular corner decorative strips, from extruded polystyrene foam, as mentioned at the outset, in that the following process steps are followed:
  • Strip-shaped blanks are cut from extruded polystyrene foam sheets as the starting product, - the blank is attached to at least one of them
  • the material of the blank is preferably treated in the region of its angular bend by thermal radiation which is caused by the resistance heating. This creates the evenly melted softening zone.
  • the resistance heater parameters can NEN be chosen so that in the softening zone a preferably semi-circular material thinning is created, which is reinforced with the aforementioned material incrustation.
  • the temperature of the stamp on its stamp surface in contact with the blank should be between 130 ° C. and 240 ° C. with a pressing time between 0.2 and 10 seconds.
  • the pressure of the stamp on the surface of the blank can vary within a wide range, for example in the range between 1000 Pa and 2500 Pa.
  • the experiments have shown that the deformation of the surface is practical can already be achieved by the weight of the blank when the surface of the blank to be treated faces the stamping table.
  • the decorative embossing or. the smooth, visible 0- surface can be produced practically with every print.
  • An apparatus for performing the method has the following main parts:
  • a release agent spray chamber with a spray head for spraying a release agent
  • the angular bend can be carried out with the help of the controllable folding rails with adjustable side guides, with which the angular deformation can be achieved by means of controlled strokes at the time of the material softening.
  • the advantage is that a very low amount of material is required to manufacture the corner decor strip, and yet a stable corner decor strip can be produced.
  • the stamping table can be provided with at least one rubber cushion on its supporting surface, with which the possible unevenness of the embossing mold can be compensated.
  • Figure 1 shows a device according to the invention in a schematic side view.
  • Fig. 2 shows an angle bending device, shown schematically
  • Figure 3 shows an angle bending device with a curved central zone, likewise in a schematic view;
  • Figure 4 is a corner decorative strip with two bending edges, in a perspective view.
  • FIG. 5 shows a corner decorative strip with a bending edge, in a perspective view
  • FIG. 6 shows a corner decorative strip with two bending edges and a curved central web, also in a perspective view.
  • a device according to the invention is shown, which - seen in the technological order - essentially from a slide 1, a blank stack magazine 3, a release agent spray chamber 4, a stamp 7, two jaws 10, one Fixing station 11 and a collecting shaft 13 is composed.
  • the release agent spray chamber 4 includes one
  • Spray head 5 for spraying a release agent onto the surface of the blanks.
  • the slide 1 is equipped with a lifting cylinder 2.
  • the fixing station 11 has a lower, divided contact surface 19, 23 and electrical resistance heaters 17, which run along two partial regions 14 of the blank that is placed and fixed.
  • the fixing stamp 16 forms, together with the contact surface, a matching, heated, curved shape (at 18), with which corner decor strips can be produced with a curved central web (cf. Fig. 6).
  • the spray head 5 operates in pulsed fashion.
  • the blanks are wetted with a release agent on their surface, which is visible after use.
  • silicone oils are used as release agents.
  • the blanks are transported under a stamp surface 6 of the stamp 7.
  • the blanks located below the stamp surface 6 rest on a heatable support surface 9.
  • the heated support surface 9 enables the stresses in the material of the blank to be compensated for.
  • the temperature of the stamp 7 exceeds 140 ° C.
  • the pressing time in the present case is 0.5 seconds with a pressure of the decorative stamp of approximately 1200 N / m 2.
  • the embossing of the decor means that the smooth surface skin of the extruded sheet material on the stamp contact surfaces is forms and forms a modified gloss surface there. The principle applies: the higher the temperature, the shorter the pressing time.
  • the stamp which is provided with a relief, is provided with an adhesion-reducing coating on its press side, in the present case all with PTFE.
  • the blank on its decorative side is wetted with a release agent, here: with silicone oil, before pressing.
  • the blanks provided with a decorative surface are pushed through a subsequent blank into a fixing station 11 with an upper fixing plate 12.
  • a precise adjustment of the position of the respective blank is carried out by jaw gripper 10.
  • the blank is heated and melted through by the resistance heater 17 in the partial areas 14, whereby a stabilizing material incrustation occurs.
  • the parameters of the auxiliary heater 17 are preferably selected so that the incrustation occurs in the form of a semicircle (see FIGS. 4 and 5, at 22). This deformation and the material incrustation result in an additional stiffening of the corner decor strip, which is very important for this product.
  • a fixing stamp 16 holds down a central region of the blank, while the movable regions, which correspond to the lateral contact surfaces 19 correspond, controlled lifting the side legs 15 of the blank. In this way, the blank is precisely preplanned at an angle to the fixed surface.
  • the resistance heaters 17 are then switched off, as a result of which the polystyrene foam cools and stiffens.
  • the legs 15 of the blank have permanently deformed.
  • the now finished corner decorative strip is pushed out into a collecting shaft 13 by a subsequent blank.
  • the entire device has adjustable side guides 20, so that the position of the blank to be treated is always adapted to the stamp.
  • corner decor strips are produced from a 200 cm long, flat but unstable polystyrene sheet, which have a smooth, visible surface with decorations of any pattern. It is important that the corner decor strip has the required angular shape to ensure a clean corner cover.
  • corner profile strip according to the invention forms a cavity for the cable laying after the bonding.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

L'invention concerne un procédé de production de baguettes décoratives, notamment de baguettes décoratives d'angle, à partir de mousse de polystyrène extrudée. Selon ce procédé, au moins une surface de la baguette décorative d'angle est façonnée sous l'action de la pression et de la chaleur d'un moule en relief (7) chauffé présentant une couche anti-adhérence. Ce procédé est caractérisé en ce que l'on utilise un agent de séparation et, comme matériaux, des panneaux de polystyrène extrudés. Ces panneaux sont respectivement découpés en ébauches sous forme de bandes. Une fois la surface de l'ébauche façonnée par le moule en relief (7), on forme au moins une zone de ramollissement à l'aide d'au moins un chauffage ohmique (17) et d'au moins un dispositif de pliage, cette zone de ramollissement thermiquement ramollie et fondue s'étendant dans le sens longitudinal. Au terme de l'action de la chaleur, cette zone est refroidie et rigidifiée et on obtient un point de pliage (22), avec encrassement de matériau de renforcement, qui divise l'ébauche en un segment central (30) et au moins une branche (15) formant un angle prédéterminé avec le segment central. L'invention concerne également un dispositif permettant de réaliser ce procédé.
PCT/EP2003/000475 2002-01-22 2003-01-20 Procede et dispositif de production de baguettes decoratives, notamment de baguettes decoratives d'angle, a partir de panneaux en mousse de polystyrene WO2003061938A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2002102180 DE10202180A1 (de) 2002-01-22 2002-01-22 Verfahren und Vorrichtung zur Herstellung von Dekoreckleisten
DE10202180.5 2002-01-22

Publications (1)

Publication Number Publication Date
WO2003061938A1 true WO2003061938A1 (fr) 2003-07-31

Family

ID=7712702

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2003/000475 WO2003061938A1 (fr) 2002-01-22 2003-01-20 Procede et dispositif de production de baguettes decoratives, notamment de baguettes decoratives d'angle, a partir de panneaux en mousse de polystyrene

Country Status (2)

Country Link
DE (1) DE10202180A1 (fr)
WO (1) WO2003061938A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009029619A2 (fr) * 2007-08-27 2009-03-05 Dow Global Technologies, Inc. Procédé améliore de formation de mousses de polystyrène extrudé et produits ainsi obtenus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2878872B1 (fr) * 2004-12-03 2007-01-19 Isobox Technologies Soc Par Ac Entrevous isolant de plancher en materiau plastique expanse et son procede de fabrication

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3892620A (en) * 1974-01-07 1975-07-01 Evans Prod Co Apparatus for forming envelopes of thermoplastic sheet material
US4237181A (en) * 1977-07-04 1980-12-02 Kurashiki Boseki Kabushiki Kaisha Method of manufacturing a flexible polyurethane foam product
WO1993022149A1 (fr) * 1992-05-02 1993-11-11 Infra-Folienkabel-Gmbh Procede et dispositif de fabrication d'articles de decoration en polystyrene expanse

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3892620A (en) * 1974-01-07 1975-07-01 Evans Prod Co Apparatus for forming envelopes of thermoplastic sheet material
US4237181A (en) * 1977-07-04 1980-12-02 Kurashiki Boseki Kabushiki Kaisha Method of manufacturing a flexible polyurethane foam product
WO1993022149A1 (fr) * 1992-05-02 1993-11-11 Infra-Folienkabel-Gmbh Procede et dispositif de fabrication d'articles de decoration en polystyrene expanse

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009029619A2 (fr) * 2007-08-27 2009-03-05 Dow Global Technologies, Inc. Procédé améliore de formation de mousses de polystyrène extrudé et produits ainsi obtenus
WO2009029619A3 (fr) * 2007-08-27 2009-09-11 Dow Global Technologies, Inc. Procédé améliore de formation de mousses de polystyrène extrudé et produits ainsi obtenus
US8092727B2 (en) 2007-08-27 2012-01-10 Dow Global Technologies Llc Method of forming extruded polystyrene foams and the products made therefrom

Also Published As

Publication number Publication date
DE10202180A1 (de) 2003-07-31

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