EP1944141B1 - Procédé de fabrication de coques pour sièges - Google Patents

Procédé de fabrication de coques pour sièges Download PDF

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Publication number
EP1944141B1
EP1944141B1 EP08000422A EP08000422A EP1944141B1 EP 1944141 B1 EP1944141 B1 EP 1944141B1 EP 08000422 A EP08000422 A EP 08000422A EP 08000422 A EP08000422 A EP 08000422A EP 1944141 B1 EP1944141 B1 EP 1944141B1
Authority
EP
European Patent Office
Prior art keywords
layers
bonding
flocking
layer
pressure
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.)
Not-in-force
Application number
EP08000422A
Other languages
German (de)
English (en)
Other versions
EP1944141A3 (fr
EP1944141A2 (fr
Inventor
Thomas Vogelbacher
Klaus-Peter Grasse
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.)
Sedus Stoll AG
Original Assignee
Sedus Stoll AG
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Filing date
Publication date
Application filed by Sedus Stoll AG filed Critical Sedus Stoll AG
Publication of EP1944141A2 publication Critical patent/EP1944141A2/fr
Publication of EP1944141A3 publication Critical patent/EP1944141A3/fr
Application granted granted Critical
Publication of EP1944141B1 publication Critical patent/EP1944141B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27D—WORKING VENEER OR PLYWOOD
    • B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
    • B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
    • B27D1/08—Manufacture of shaped articles; Presses specially designed therefor
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C5/00—Chairs of special materials
    • A47C5/14—Chairs of special materials characterised by the use of laminated wood

Definitions

  • the present invention relates to a method for producing bent, multi-layered seat shells according to the preamble of claim 1. Such a method is DE 145 49 88 A1 known.
  • the gluing of the individual layers takes place in large presses, wherein the layers are pressed from their initially flat shape at the same time in the desired curved final shape of the seat.
  • High-pressure laminates High Pressure Laminates
  • the outer layers which may consist of colored papers impregnated with synthetic resin, such as melamine, because they have very good and durable surface properties. The surface does not have to be aftertreated in this case.
  • Melamine is compatible with common wood glue.
  • presses for gluing such layers by means of wood glue are in particular high-frequency presses, in which the wood glue is heated due to the water contained in it by the high-frequency radiation and thereby activated.
  • the press and the individual layers - at least when they are essentially dry - are less affected by the high-frequency radiation and remain relatively cold.
  • DE 1 454 988 describes a method for producing a seat shell in which several layers of fiber-reinforced thermoplastics are heated to the plastic flow and then deformed under low pressure.
  • the seats are superficially smooth and thus quite slippery. It is known to apply an anti-slip on the seat, but this requires a subsequent operation.
  • the invention has as its object to provide a rational method for producing an improved seat shell of the type mentioned, which is not slippery at least in the area of the seat and also looks good and appealing.
  • the solution of this task according to the invention is that at least one of the two outer layers of the seat shell is provided on the outside before gluing with the other layers in still flat or one-dimensional bent state at least part of the surface with a flocking.
  • the layer to be flocked is provided with an adhesive application, after which fibers are applied to this adhesive application. Under the action of electrostatic forces, the fibers align themselves perpendicularly to the adhesive application and are fixed in this position during setting or when solidifying the adhesive. The result is a velvety surface.
  • the flocking is virtually unaffected by the subsequent pressure and heat treatment in the press to glue the multiple plies and retains virtually 100% of its beneficial properties. This is especially true if the gluing is performed in such a high frequency press that the individual layers including the Belockung and the press remain relatively cold and immediately practically only the glue is heated and this only to an activation temperature of 100 ° C. for
  • the adhesive application must be carried out using a sufficiently heat-resistant adhesive which is not adversely affected by the heat applied during the gluing of the layers. Suitable
  • two-component adhesives which have a heat resistance greater than 100 °.
  • the fibers used must also be sufficiently heat-resistant. Fibers made of a polyamide, such as polyamide 6.6, which have this property are particularly suitable for use in the process according to the invention.
  • the application of the adhesive as well as of the fibers is substantially facilitated by the "flat state" of the layer to be flocked, wherein the term "flat state” should also include a one-dimensionally bent state of the layer, so that the layer is e.g. how a sheet of paper could be redirected around a roll in a printer while being coated with the adhesive and / or fibers.
  • the application of adhesive can be applied over the entire surface of the surface to be flocked by brushing or spraying. Preferably, however, it is applied only over part of the area, for which the screen printing process is particularly suitable. It can also be decorative surface patterns and with appropriate color choice of the fibers and interesting to be flocked position color contrasts are generated.
  • the flocking layer being very thin with a thickness of e.g. only about 1 mm can be performed.
  • the flocking layer may also be substantially thicker, e.g. up to 4 mm thick.
  • the thickness depends on the length of the fibers, the fibers being used in the process according to the invention e.g. may have a length between 0.5 - 4 mm and a thickness of 1 - 20 dtex. Particular preference is given to fibers of about 1 mm in length and about 3.3 dtex in thickness.
  • the flocking of the type considered are extremely durable, hard-wearing and abrasion-resistant and are good upholstery in durability and durability not inferior. They are air-conditioning, easy to clean, waterproof, skin-friendly, protective and equal tolerances. They contain enough air to prevent sweating, which is of particular importance for seats.
  • Fig. 1 1 denotes a layer of a high pressure laminate (HPL) based on a plurality of kraft papers impregnated with melamine resin. The individual layers of the high-pressure laminate are not shown.
  • the thickness of the layer 1 is for example 0.6 mm.
  • the layer 1 could be a so-called endless web, which in Fig. 1 running from left to right through the area shown and, for example, unrolled in front of the area shown on the left of a roll and cut to the right behind the area shown in individual pieces.
  • the layer 1 is provided over the entire surface by brushing with an adhesive 3 and thus coated under a fiber application device 4 moves through.
  • the application device 4 short, negatively charged fibers 5 are uniformly applied to the lying at a positive potential layer 1. Due to the electrostatic charge, the fibers 5 are aligned parallel to one another perpendicular to the layer 1.
  • the fibers 5 With the setting or hardening of the adhesive of the adhesive application 3, the fibers 5 are fixed. Excess, not fixed fibers 7 are finally removed by suction with a suction device 6. On the layer 1 results in a velvety flock 8.
  • Fig. 2 shows a layer 1 with a flocking 8 as the top layer of a package from a total of 7 not yet interconnected layers, the flocking 8 is on the outside.
  • the inner layers, designated in total by 9, are, for example, thin wooden furs with a thickness of, for example, 1.2 mm.
  • the bottommost layer 10 could, like the uppermost layer, consist of a high-pressure laminate, but this is provided on the outside instead of with a flocking, for example with a printed or colored decorative layer 11. However, flocking would also be possible here.
  • a seat shell 14 can be made, for example, for a chair.
  • Fig. 3 schematically shows such a press 12 in the still open state, in which a package 13 from several layers according to Fig. 2 is inserted.
  • the glue required for bonding between the layers is not shown.
  • the thin and thus flexible layers adapt when inserted into the press essentially already to their desired final shape.
  • the press 12 is preferably a high-frequency press and the glue is a water-based wood glue.
  • Fig. 4 shows under a) a finished seat 14 with seat 15 and backrest 16, as shown by the gluing of the package 13 in the molding press 12 of Fig. 3 results.
  • the seat shell 14 is on one side over the entire surface, on the top of the seat 15 and the front of the backrest 16, provided with a flock 8.
  • the flock 8 applied prior to gluing on the uppermost layer 1 was not affected by the pressing process in the press 12.
  • FIG. 4 shows under b) a corresponding Embodiment.
  • c) and d) shows Fig. 4 two further examples in which a partial area flocking pattern is applied on a partial surface such as the seat surface 15, namely in the form of several strips in Fig. 4c) and in the form of a dot pattern in Fig. 4 d) ,
  • a different application technique such as the screen printing technique must be used in softer remaining patterns can be produced.
  • the flocking may contrast in color to non-flocked surfaces.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Laminated Bodies (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Claims (11)

  1. Procédé de fabrication de coques d'assise (14) multicouches cintrées en particulier de chaises, dans lequel les multiples couches (1, 9, 10) de la coque d'assis sont collées entre elles sous application de pression et chaleur, caractérisé en ce qu'une pression de 1-3 N/mm2 est appliquée pour le collage des couches, et en ce qu'au moins une (1) des deux couches extérieures (1, 10) de la coque d'assise (14) est munie, avant son collage avec les autres couches, d'un flocage (8) au moins partiel du côté extérieur à l'état plat ou unidimensionnellement cintré.
  2. Procédé selon la revendication 1, caractérisé en ce que la couche à floquer (1) est munie sur son côté à floquer d'une enduction d'adhésif (3) et en ce que les fibres (5) du flocage (8) sont ensuite appliquées sur cette enduction d'adhésif (3) par des forces électrostatiques.
  3. Procédé selon la revendication 2, caractérisé en ce que sont utilisées comme fibres (5) des fibres, en particulier des fibres de polyamide, avec une longueur entre 0,5 et 4mm, de préférence de 1mm, et avec un titre de 1 à 20dtex, de préférence de 3,3dtex.
  4. Procédé selon l'une quelconque des revendications 2 ou 3, caractérisé en ce que l'enduction d'adhésif (3) est appliquée de façon partielle et de préférence selon des motifs surfaciques par un procédé de sérigraphie.
  5. Procédé selon l'une quelconque des revendications 2 à 4, caractérisé en ce que pour l'enduction d'adhésif (3) est utilisée une colle thermorésistante, laquelle n'est pas altérée par la chaleur mise en oeuvre lors du collage des couches et laquelle est en particulier une colle bicomposants avec une résistance à la chaleur supérieure à 100°.
  6. Procédé selon l'une quelconque des revendications 1 à 5, caractérisé en ce qu'un stratifié est utilisé pour la(les) couche(s) à floquer (1).
  7. Procédé selon la revendication 6, caractérisé en ce que le stratifié est imprégné en résine mélaminée.
  8. Procédé selon l'une quelconque des revendications 1 à 7, caractérisé en ce qu'il est utilisé du bois déroulé pour au moins une couche intérieure (9) et de la colle à bois pour le collage des couches.
  9. Procédé selon l'une quelconque des revendications 1 à 8, caractérisé en ce que qu'il est utilisé pour le collage des couches une pression de 2N/mm2.
  10. Procédé selon l'une quelconque des revendications 1 à 9, caractérisé en ce qu'il est utilisé pour le collage des couches une température dans la plage de 60 à 100°C.
  11. Procédé selon l'une quelconque des revendications 1 à 11, caractérisé en ce qu'il est utilisé une presse à haute fréquence pour le collage des couches.
EP08000422A 2007-01-12 2008-01-10 Procédé de fabrication de coques pour sièges Not-in-force EP1944141B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007002623A DE102007002623A1 (de) 2007-01-12 2007-01-12 Verfahren zur Herstellung von Sitzschalen

Publications (3)

Publication Number Publication Date
EP1944141A2 EP1944141A2 (fr) 2008-07-16
EP1944141A3 EP1944141A3 (fr) 2008-07-23
EP1944141B1 true EP1944141B1 (fr) 2012-01-04

Family

ID=39295928

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08000422A Not-in-force EP1944141B1 (fr) 2007-01-12 2008-01-10 Procédé de fabrication de coques pour sièges

Country Status (3)

Country Link
EP (1) EP1944141B1 (fr)
AT (1) ATE539863T1 (fr)
DE (1) DE102007002623A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITUD20110055A1 (it) * 2011-04-11 2012-10-12 Vernifer Mav S R L Procedimento di nobilitazione di un elemento di seduta o parti di esso e relativo elemento di seduta o parti di esso
CN103692506B (zh) * 2013-12-24 2015-06-10 南京工业大学 一种基于木材气干密度参数的胶合木构件加压制备工艺
CN104526823A (zh) * 2014-12-05 2015-04-22 柳州柏豪家具有限公司 一种单板弯曲木家具的定位精度补偿工艺
FR3049208B1 (fr) * 2016-03-25 2018-04-06 Jmvl Developpement Procede d'impression et de mise en forme d'un mobilier en bois
CN106378849B (zh) * 2016-09-09 2019-06-21 南京工业大学 基于木材塑性的弧形胶合木构件成型方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB895167A (en) * 1959-12-24 1962-05-02 Austin Motor Co Ltd Improvements in or relating to seats
DE1854546U (de) * 1961-10-05 1962-07-05 Fraenkische Holzwarenfabrik Os Buerostuhl oder aehnliche sitzgelegenheit.
DE1454988A1 (de) * 1965-05-03 1969-05-08 Basf Ag Verfahren zur Herstellung von Formkoerpern,die aus mit faserigen Substanzen verstaerkten Thermoplasten bestehen
DE7907295U1 (de) * 1979-03-15 1984-07-26 Alkor GmbH Kunststoffverkauf, 8000 München Traegerplatte mit einer darauf befindlichen dekorschicht
US7759267B2 (en) * 2006-04-05 2010-07-20 Azdel, Inc. Lightweight composite thermoplastic sheets including reinforcing skins

Also Published As

Publication number Publication date
EP1944141A3 (fr) 2008-07-23
ATE539863T1 (de) 2012-01-15
EP1944141A2 (fr) 2008-07-16
DE102007002623A1 (de) 2008-07-17

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