EP0236516B1 - Procédé de fabrication d'un objet moulé à partir d'un mat de fibres renforcé par une matière plastique et d'un matériau de revêtement doublant le mat de fibres - Google Patents

Procédé de fabrication d'un objet moulé à partir d'un mat de fibres renforcé par une matière plastique et d'un matériau de revêtement doublant le mat de fibres Download PDF

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Publication number
EP0236516B1
EP0236516B1 EP19860102984 EP86102984A EP0236516B1 EP 0236516 B1 EP0236516 B1 EP 0236516B1 EP 19860102984 EP19860102984 EP 19860102984 EP 86102984 A EP86102984 A EP 86102984A EP 0236516 B1 EP0236516 B1 EP 0236516B1
Authority
EP
European Patent Office
Prior art keywords
powder
moulded part
powder grains
grains
wetted
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
Application number
EP19860102984
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German (de)
English (en)
Other versions
EP0236516A1 (fr
Inventor
Karl Giesen
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.)
Johann Borgers GmbH and Co KG
Original Assignee
Johann Borgers GmbH and Co 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 Johann Borgers GmbH and Co KG filed Critical Johann Borgers GmbH and Co KG
Priority to AT86102984T priority Critical patent/ATE39493T1/de
Publication of EP0236516A1 publication Critical patent/EP0236516A1/fr
Application granted granted Critical
Publication of EP0236516B1 publication Critical patent/EP0236516B1/fr
Expired legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N7/00—Flexible sheet materials not otherwise provided for, e.g. textile threads, filaments, yarns or tow, glued on macromolecular material
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N7/00—Flexible sheet materials not otherwise provided for, e.g. textile threads, filaments, yarns or tow, glued on macromolecular material
    • D06N7/0005—Floor covering on textile basis comprising a fibrous substrate being coated with at least one layer of a polymer on the top surface
    • D06N7/0039—Floor covering on textile basis comprising a fibrous substrate being coated with at least one layer of a polymer on the top surface characterised by the physical or chemical aspects of the layers
    • D06N7/0057—Layers obtained by sintering or glueing the granules together

Definitions

  • the invention relates to a method of the type specified in the preamble of claim 1.
  • Such molded parts made of consolidated nonwovens are used as high-quality interior cladding in vehicle construction.
  • solvent-based adhesives are sprayed onto the surface of the molded part in liquid form.
  • the adhesive used is elastomeric substances, which can be almost 60% dissolved in a solvent. These adhesives are relatively expensive, their use is harmful to the environment, and there are considerable losses in the spraying of amounts of adhesive not reaching the molded part.
  • the cover material is applied in a press, the lower stamp of which is heated. A faulty spray query means that the cover fabric is not connected to the molded part at one point. Reworking such a defective product is difficult, complex and leaves recognizable repair points.
  • thermoplastic material in powder form In order to adhere several layers of textiles to one another, it is known to sprinkle thermoplastic material in powder form on the one textile surface and to connect it in a heated molding press with a covering material (US Pat. No. 2,258,100; Peter Sroka, manual of the textile fixing inserts).
  • US Pat. No. 2,258,100; Peter Sroka manual of the textile fixing inserts.
  • the application of the adhesive in powder form can practically only be carried out satisfactorily on flat, horizontally lying textile surfaces, because the inclined surfaces of a molded part would cause the powder grains to slip under the effect of their own gravity and in particular would be shaken off when such a molded part was carried out when the method was carried out is moved.
  • a usable adhesive result for molded parts of the type mentioned in the preamble was apparently not to be expected.
  • the invention has for its object to develop a simple, particularly inexpensive method of the type mentioned in the preamble of claim 1, which manages with inexpensive adhesives, largely avoids adhesive losses and provides a perfect surface appearance of the molded part provided with the covering material. This is achieved according to the invention by the measures specified in the characterizing part of claim 1, which have the following meaning:
  • the adhesive effect between the liquid applied to the surface of the molded part and the powder grains can be achieved by pure adhesion. However, it is possible to cause the powder grains to swell or dissolve with the liquid, which increases the temporary adhesion. This is possible, for example, with ethyl acetate as a liquid if a copolymer is used as the material for the powder grains. Vinyl copolymers with vinyl acetate are suitable as copolymers. Co-polyamides can also be used as the materials of the powder granules, but also polyethylene, polypropylene and the like. Such adhesives are considerably cheaper than the known adhesives.
  • the method according to the invention also works practically without loss, because the amount of powder falling over the edge of the molded part when the powder is applied is collected and can be easily reused. It is not even necessary to reprocess the powder, because in this phase of the process the heat treatment has localized the powder grains fixed by melting, has not yet taken place. Because water is already sufficient as a wetting liquid, there are no problems with environmental protection. Costly solvents, which have to be driven out for the adhesive to become effective, are eliminated in the invention.
  • the gluing process can also be carried out quickly in terms of process, because the surface-fixed powder is distributed over the entire surface in small granules and is heated by surface heating, e.g. B. infrared radiation can be quickly liquefied into adhesive form. Experience has shown that the surface appearance of a cover fabric glued to the molded part in the manner according to the invention is optimal. Any flaws could easily be repaired by renewed powder treatment.
  • the powder grains are already fixed locally on the surface of the molded part.
  • the molded part is already prepared for gluing. If it is cooled in between, the further bonding of the powder grains is stopped and the molded parts can be temporarily stored by stacking or the like. It is favorable for production to bring the molded parts up to this state of manufacture and then to wait and see what quantities and in what types and colors of upholstery materials are required. Then the molded parts are removed from the warehouse and retrofitted in the required quantity with the relevant cover materials in a further heat treatment. Although this is very practical in terms of production technology, it is also possible, as claimed in claim 6, to carry out both heat treatments, that is to say both the local fixing of the powder granules and their adhesive-effective liquefaction, in a single, common operation.
  • the powder grains can be applied to the moistened upper side of the molded part in two ways, each of which has its particular advantages. It is technically simple, according to claim 2, to bring the powder grains onto the top of the molded part by sprinkling.
  • a uniformization of the powder application can be achieved according to claim 7, where an undesirable excess of powder is removed. According to claim 8, this can be done simply by suction. Blowing off or shaking off the excess grain would also be applicable.
  • the method according to the invention is based on a prefabricated molded part 10, in the normal position of which, in addition to horizontal surface regions 11, there are also more or less steep inclined surfaces 12, the shape and size of which may vary depending on the intended use of the molded part.
  • the molded part 10 is to consist of a non-woven fabric 13, the fibers of which have been brought into a specific shape prescribed by the use by means of plastic and press treatment, possibly under the influence of heat.
  • the molded part 10 is intended to be part of a vehicle interior lining, such as a parcel shelf serving to furnish the passenger compartment of a motor vehicle.
  • the aim of the method according to the invention is to achieve the end product 10 ′′ shown in FIGS. 9 and 9 A, where a cover fabric 20 is applied to the top 14 of the molded part 10, specifically by means of an adhesive 15 which is shown in FIG Exaggerated thick intermediate layer is shown. According to the invention, this takes place in the following special way:
  • the method according to the invention is expediently carried out in two work stages, each of which consists of different work phases, which take place one after the other and therefore take place “on the assembly line” one after the other.
  • the molded part 10 is expediently placed on a conveyor belt 16 or the like, which brings the product to the various workstations in succession, where the various treatments are carried out.
  • FIG. 2 shows a first work station, where water 18 is sprayed onto the top 14 of the intermediate product 10 via nozzles 17 and wets the entire surface thereof.
  • the liquid film 19 which is expediently formed only on the surface is shown in FIG. 2 ats thick line. 2, these relationships are shown to scale, but in a large magnification. It goes without saying that other liquids could also be used instead of water 18.
  • the molded part 10 could also consist of a material other than a consolidated nonwoven 13.
  • the preliminary product 10 provided with the liquid film 19 reaches the next work station according to FIG. 3, where an adhesive in powder form 21 is applied to the molded part 10.
  • this is done by sprinkling.
  • An adjustable slide 24 determines the amount of powder which is removed from the container 23 during the rotation of the roller 22 illustrated by the arrow 25 and which is detached from the roller 22 by a scraper brush 26 or the like and in one case 27 individual powder grains 28 the intermediate product 10 below trickles down.
  • the powder grains 28 adhere to the surface liquid film 19, which covers the face 14 of the molded part 10.
  • the water 18 has an adhesive effect both with the material of the molded part 10 and with the powder material 21.
  • the individual powder grains 28 could also be dissolved or swelled. It is significant that the surface wetting with water causes the powder grains 28 to adhere locally in the desired, set dosage, and also, as shown in FIG. 3A, to stiff surface areas where the grains 28 would normally trickle down due to their gravity. As a result, a uniform powder layer 29 is created in this working phase.
  • the suction device 30 indicated by dash-dotted lines in FIG.
  • Powder which could not be bound by the liquid film is removed again and, if necessary after precautionary drying, is returned to the powder container 23 for reuse.
  • the amount of powder that falls over the boundary edges of the molded part 10 can also be reused by suction or blowing off. In this way, loss of adhesive can be decisively avoided. This gives a uniform powder layer 29 with the desired defined amount per unit area.
  • the powder grains 28 are now permanently fixed at their point of impact.
  • surface heating 31 takes place, which is brought about here by infrared radiation from heating devices 32.
  • the liquid film 19 is caused to evaporate and on the other hand the powder grains 28 are sintered in place so that they remain localized.
  • the evaporation of the liquid is symbolically illustrated in FIG. 4 by vapor clouds 33.
  • the evaporating water 18 does not cause any problems, in particular no problems that affect environmental protection.
  • the method according to the invention could immediately pass from the working phase of FIG. 4 into the working phase of FIG. 7, which will be described later, but it is more expedient from a procedural point of view to work towards an interruption of the method in the subsequent stage, which is illustrated in FIG. 5 .
  • Cooling of the melt beads 28 ′ is brought about here, for which purpose a blower 35 leading in cooling air 34 can be used, which produces an intermediate product 10 ′ according to the invention, the appearance of which can be seen from the aforementioned FIG. 4A.
  • this intermediate product 10 ' can be stored by stacking one above the other in order to be introduced, if necessary, into the next working section in the desired quantity, which is illustrated schematically in FIGS. 7 to 9.
  • the prepared intermediate product 10 ' reaches the next work station according to FIG. 8 via a conveyor belt 16, which is essentially formed by a press 40 with an upper and lower punch 41, 42 which have a profile 43 adapted to the shape of the intermediate product 10' .
  • the preliminary product 10 ' is placed on the lower punch 41 by a loading device (not shown in greater detail) or by hand, and a sufficiently large piece of egg is placed between the two stamps 41, 42 which are still apart
  • Nes cover fabric 20 is arranged, which is expediently gripped by claws 44 on the edge and held in the stretched state in coordination with the closing movement of the two punches 41, 42, which is indicated in FIG. 8 by the movement arrows 45.
  • the profile surfaces 43 of the two punches 41, 42 are expediently cooled, for. B. by cooling water, as indicated by the connecting piece 47 and the coolant arrows 46 in Fig. 8.
  • the adhesive layer 28, which is initially still somewhat non-uniform as shown in FIG. 7A, is made more uniform, as illustrated by the adhesive 15 in FIG. 9A.
  • the cover fabric 28 is permanently attached to the molded part 10 evenly.
  • the cover fabric 20 is expediently dimensioned larger than the surface area of the molded part 10 on which it is based.
  • edge regions of the covering material 20 initially protrude beyond the boundary edges of the molded part 10, which in a final assembly, as illustrated in FIG. 9, are placed around the edges 29 and fastened on the rear side of the molded part 10 by using separate adhesive materials. After this treatment has been completed, punchings or perforations can also be made in the end product 10 ".
  • the adhesive layer 15 formed in the end product 28" according to the invention also acts as a moisture barrier in the product.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Claims (8)

1. Procédé de fabrication d'une pièce moulée (10) constituée d'un non-tissé (13) durci par de la matière plastique et doublée d'un matériau de revêtement (20), notamment pour le revêtement intérieur d'un véhicule, tel qu'un compartiment en U renversé, un revêtement latéral de porte ou analogue, selon lequel on munit d'abord d'agents adhésifs (15) la face supérieure (14) de la pièce moulée (10), puis on place le matériau de revêtement (20) sur la couche ainsi formée, caractérisé en ce qu'on mouille d'abord sur toute sa surface la face supérieure (14) de la pièce moulée (10) avec un liquide (18), par exemple de l'eau, puis on applique sur la surface (14) mouillée (19) un agent adhésif formé d'une matière thermoplastique (21), sous forme pulvérulente ruisselante (28), le liquide superficiel (19) agissant à la façon d'un adhésif entre la pièce moulée (10) et la matière pulvérulente (21) et maintenant temporairement les grains de poudre (28), à la suite de quoi on soumet la pièce moulée (10) pourvue des grains de poudre (28) à un traitement thermique (31) agissant au moins superficiellement, tel qu'un rayonnement infrarouge, à une dose telle que, après évaporation (33) du liquide à action adhésive (19), les grains de poudre (28) se fixent à demeure, en substance et sur place, sur la surface de la pièce moulée, par frittage (28'), et, par un autre traitement thermique (37) agissant au moins superficiellement, tel qu'un rayonnement infrarouge, on fluidifie (28") les grains de poudre immobilisés (28') afin de les rendre adhésifs, puis finalement on applique le matériau de revêtement (20) et on le colle avec la pièce moulée (10).
2. Procédé suivant la revendication 1, caractérisé en ce qu'on répand ou pulvérise les grains de poudre (28) sur la face supérieure (14) humidifiée (19) de la pièce moulée (10).
3. Procédé suivant la revendication 2, caractérisé en ce qu'on exécute l'épandage (27) ou la pulvérisation dans un champ électrostatique.
4. Procédé suivant la revendication 1, caractérisé en ce que, pour appliquer les grains de poudre (28), on immerge la pièce moulée (10) par sa face supérieure (14) mouillée (19) dans une accumulation de poudre en vrac.
5. Procédé suivant l'une ou plusieurs des revendications 1 à 4, caractérisé en ce que, après son premier traitement thermique (31), on refroidit les pièces moulées (10) et on les entrepose, par exemple par empilement (36).
6. Procédé suivant l'une ou plusieurs des revendications 1 à 4, caractérisé en ce qu'on exécute en une seule passe de travail le premier (31 ) et le second (37) traitement thermique de la pièce moulée (10,10').
7. Procédé suivant l'une ou plusieurs des revendications 1 à 6, caractérisé en ce que, après l'application des grains de poudre (28), on sépare de la pièce moulée (10) l'excès de grains de poudre qui ne sont pas maintenus de façon adhérente sur la surface mouillée (14).
8. Procédé suivant la revendication 7, caractérisé en ce qu'on aspire (30) l'excès de grains.
EP19860102984 1985-01-31 1986-03-06 Procédé de fabrication d'un objet moulé à partir d'un mat de fibres renforcé par une matière plastique et d'un matériau de revêtement doublant le mat de fibres Expired EP0236516B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86102984T ATE39493T1 (de) 1986-03-06 1986-03-06 Verfahren zum herstellen eines formteils aus einem durch kunststoff verfestigten faservlies und einem das faservlies kaschierenden bezugsstoff.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19853503192 DE3503192C1 (de) 1985-01-31 1985-01-31 Verfahren zur Herstellung eines Formteils aus einem durch Kunststoff verfestigten Faservlies und einem das Faservlies kaschierenden Bezugsstoff

Publications (2)

Publication Number Publication Date
EP0236516A1 EP0236516A1 (fr) 1987-09-16
EP0236516B1 true EP0236516B1 (fr) 1988-12-28

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Application Number Title Priority Date Filing Date
EP19860102984 Expired EP0236516B1 (fr) 1985-01-31 1986-03-06 Procédé de fabrication d'un objet moulé à partir d'un mat de fibres renforcé par une matière plastique et d'un matériau de revêtement doublant le mat de fibres

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EP (1) EP0236516B1 (fr)
DE (1) DE3503192C1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4105261C2 (de) * 1991-02-20 1994-03-31 Lignotock Gmbh Verfahren zum Kaschieren von räumlich verformten Trägerteilen
JP2001184828A (ja) * 1999-12-21 2001-07-06 Sony Corp ライナ貼付方法及びライナ貼付装置
DE10208524B4 (de) * 2002-02-27 2004-07-08 Johann Borgers Gmbh & Co. Kg Verfahren zum Herstellen von Faservlies-Formteilen

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2258100A (en) * 1941-06-12 1941-10-07 Reiss Mfg Corp Process for making garments
GB716477A (en) * 1952-12-05 1954-10-06 John Conrad Arnold Production of a heat-sealable fibrous web for the manufacture of containers and bags
US3211600A (en) * 1961-07-13 1965-10-12 Detroit Gasket & Mfg Company Method of making composite contoured carpeting
DE2745060C2 (de) * 1977-10-06 1985-04-11 Dynic Corp., Kyoto Verfahren und Vorrichtung zum Herstellen eines einbügelbaren Einlagestoffes
GB2119688B (en) * 1982-04-24 1985-07-10 Bl Tech Ltd Method of and components for adhesive bonding
DE3231393C2 (de) * 1982-08-24 1985-04-18 I.G. Bauerhin GmbH elektro-technische Fabrik, 6466 Gründau Verfahren zum Kaschieren bzw. zum haftfesten Belegen von freien Oberflächen, von Formteilen aus thermoplastischem Kunststoff mit Textilmaterial od. dgl.

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Publication number Publication date
EP0236516A1 (fr) 1987-09-16
DE3503192C1 (de) 1986-09-18

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