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WO2003076539A1 - Procede de production de pieces moulees plates - Google Patents

Procede de production de pieces moulees plates Download PDF

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Publication number
WO2003076539A1
WO2003076539A1 PCT/EP2003/002142 EP0302142W WO03076539A1 WO 2003076539 A1 WO2003076539 A1 WO 2003076539A1 EP 0302142 W EP0302142 W EP 0302142W WO 03076539 A1 WO03076539 A1 WO 03076539A1
Authority
WO
WIPO (PCT)
Prior art keywords
radiation
moulded parts
adhesive
parts
molded parts
Prior art date
Application number
PCT/EP2003/002142
Other languages
German (de)
English (en)
Inventor
Robert Magunia
Norbert Schmitz
Original Assignee
Henkel Kommanditgesellschaft Auf Aktien
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 Henkel Kommanditgesellschaft Auf Aktien filed Critical Henkel Kommanditgesellschaft Auf Aktien
Priority to AU2003214087A priority Critical patent/AU2003214087A1/en
Publication of WO2003076539A1 publication Critical patent/WO2003076539A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
    • C09J175/04—Polyurethanes
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/483—Reactive adhesives, e.g. chemically curing adhesives
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/483—Reactive adhesives, e.g. chemically curing adhesives
    • B29C65/485—Multi-component adhesives, i.e. chemically curing as a result of the mixing of said multi-components
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/45—Joining of substantially the whole surface of the articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B32B37/1207—Heat-activated adhesive
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/703—Isocyanates or isothiocyanates transformed in a latent form by physical means
    • C08G18/705—Dispersions of isocyanates or isothiocyanates in a liquid medium
    • C08G18/706—Dispersions of isocyanates or isothiocyanates in a liquid medium the liquid medium being water
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J5/00—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
    • C09J5/06—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers involving heating of the applied adhesive
    • 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
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
    • B29C2035/0822—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using IR radiation
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/481—Non-reactive adhesives, e.g. physically hardening adhesives
    • B29C65/4815—Hot melt adhesives, e.g. thermoplastic adhesives
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/483—Reactive adhesives, e.g. chemically curing adhesives
    • B29C65/4835—Heat curing adhesives
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
    • B29C66/024—Thermal pre-treatments
    • B29C66/0242—Heating, or preheating, e.g. drying
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
    • B29C66/026—Chemical pre-treatments
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/3005—Body finishings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/3005—Body finishings
    • B29L2031/3011—Roof linings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/3005—Body finishings
    • B29L2031/3014—Door linings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/3005—Body finishings
    • B29L2031/3017—Floor coverings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/3005—Body finishings
    • B29L2031/3023—Head-rests
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2310/00—Treatment by energy or chemical effects
    • B32B2310/08—Treatment by energy or chemical effects by wave energy or particle radiation
    • B32B2310/0806—Treatment by energy or chemical effects by wave energy or particle radiation using electromagnetic radiation
    • B32B2310/0825—Treatment by energy or chemical effects by wave energy or particle radiation using electromagnetic radiation using IR radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2605/00—Vehicles
    • B32B2605/003—Interior finishings
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
    • C08L75/04—Polyurethanes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2475/00—Presence of polyurethane

Definitions

  • the invention relates to a method for producing flat molded parts and functional elements for vehicle interiors produced by this method.
  • a multitude of functional elements such as e.g. Door side parts, headlining or roof stiffeners, parcel shelves, dashboards, instrument panels, for use, which are made up of essentially flat molded parts. These molded parts usually consist of a carrier material that is coated with one or more decorative layers.
  • molded parts usually consist of a carrier material that is coated with one or more decorative layers.
  • a large number of plastics are used as carrier materials, examples being acrylonitrile-styrene-butadiene (ABS), polypropylene, polyethylene, polystyrene, in particular as foamed polystyrene (EPS), and plastic alloys such as ABS-polycarbonate alloys.
  • fiber composites based on textile fabrics made of hemp, sisal, flax, glass fibers, as well as wood-based materials such as wood flour or wood chips or paper bound with reactive resins such as epoxy resins, phenolic resins, SMC (sheet molding compounds) are used as carrier materials.
  • Foamed backing materials made of polyurethanes or epoxy resins are also used, which may also be glass fiber reinforced.
  • Metals are also used as carrier materials, for example for the A, B or C pillars. Steel sheets, aluminum sheets, magnesium sheets or sheets made of Mg-Al alloys may be mentioned here as examples.
  • These molded carrier parts are laminated with flat materials in foil or textile form. Woven fabrics, knitted fabrics, nonwoven fabrics, gauze or the like are used as textile fabrics.
  • the textiles can also be used, for example, in the form of carpets (with or without a back coating with a foam).
  • the textile structures or foils can consist of a large number of plastics, examples being polyethylene, polypropylene, ABS, polyvinyl chloride (PVC), acrylonitrile-styrene-acrylate (ASA), thermoplastic urethanes (TPU) or thermoplastic olefins (TPO).
  • thermoplastic adhesives in the form of hot melt adhesives or dispersions are applied with the aid of rollers, nozzles or spraying devices to the interface of the carrier material or the decorative cover layer to be bonded or to both.
  • Hot melt adhesives must be applied at temperatures between 150 to 250 ° C. The adhesives are often applied to the sheet-like preliminary products before the final assembly, so that they have to be reactivated after the assembly and before the parts are joined. Temperatures from 150 ° C to over 250 ° C are necessary.
  • the web-shaped decorative material is often deformed, delaminated, burned or destroyed.
  • surface temperatures above 120 ° C. are also necessary in order to achieve an adequate bond between the layers.
  • This high energy demand often leads to tension in the composite material and sometimes to the destruction of the molded parts, at least on their surface. This has led to the fact that these functional inner parts are often produced in complex processes.
  • EP 0825066 A2 describes a method for producing a roof reinforcement for vehicles, in which a multi-layer semifinished product is produced from two outer kraftliners and a middle hard foam layer. This is then split in the middle and cut to the dimensions of the roof skin of the vehicle. Then a single Kraftliner with oversize is cut to the dimensions of the roof skin of the vehicle. Finally, the cut of the split semi-finished product and the cut of the individual kraft liner are provided with a fuel layer between the side of the rigid foam layer and the individual kraft liner and are shaped and glued to the final shape in a mold corresponding to the curvature and the roof skin.
  • EP 09997265 A1 describes the production of a roof reinforcement molding in which a middle foam layer in the form of a foamed plate or a foamed strip material is wetted or impregnated with a hardening and adhesive agent. A cover layer that has an affinity for should then be placed on both sides of the foamed plate or the foamed strip material which has hardness and adhesive. The composite is then pressed in a heated tool, which determines the contour of the molded part.
  • the hardening and adhesive agent is hardened under the influence of heat.
  • An example of the adhesive process is the impregnation of a sheet of flexible polyurethane foam based on polyester with a monomeric diisocyanate as a binder, the impregnated foam is then passed through a first calender, the gap of which is adjustable, thereby regulating the amount of diisocyanate in the foam so that Excess diisocyanate flows back into the drip pan and remains in the process.
  • the impregnated, foamed strip material is subsequently wetted with a catalyst which consists of a mixture of water and amines. This is followed by the calendering of the upper and lower cover layers on the foamed strip material. Heated molding and pressing tools are required for these manufacturing processes.
  • US 6113837 A describes a method for forming foam-shaped plastic parts with the aid of pressing tools operated at room temperature. For this purpose, it is proposed to pigment a semi-hard thermoformable plastic foam with carbon black and then to heat the preliminary product to the forming temperature with the aid of infrared radiation (IR) and then to insert and reshape it in the cold pressing tool.
  • IR infrared radiation
  • WO 01/07228 discloses a method for vulcanizing a material, in particular rubber or silicone, in which the vulcanization is effected or supported by heating the material to be vulcanized, at least part of the energy required for heating the material being generated by electromagnetic radiation is transmitted from a radiation source to the material whose radiation components are in the near infrared wave range. This document suggests using this method in particular when the material is extruded as a profile strand from an extruder and then transported through a conveyor.
  • two bodies can be connected along a common interface by heating at least one of the bodies in an interface region extending along the interface and then bringing the bodies together.
  • at least one of the bodies should have a material region that is not to be heated, in particular a pressure-sensitive adhesive layer, on a side facing away from the interface.
  • the bodies are then to be brought together and the heating of the interface area is to be brought about by irradiation with electromagnetic radiation, with at least essential radiation components causing the heating to be in the near infrared wave range.
  • the thermal activation of the interfaces or the adhesive application can be carried out after the molded parts have been joined with the aid of a heated or heated press unit. stuff done. Thereby, the molded part can be thermoformed simultaneously or subsequently.
  • the process is controlled so that the surface temperature of the molded part during the drying process of the aqueous dispersion does not exceed 50 to 90 ° C., preferably 60 to 70 ° C.
  • Near IR radiation in the sense of this invention is to be understood to mean electromagnetic radiation which directly adjoins the visible light on the long-wave side; this is preferably a wavelength range between 0.7 ⁇ m and 1.5 ⁇ m , “Near IR” is also called “Near-Infra-Red” in scientific literature. It is known that infrared radiation has the highest energy density and very advantageous properties in this wavelength range. In particular, it has been shown that, in contrast to the longer-wave IR radiation, the near IR radiation can penetrate deeper into the adhesive volume to be heated and not only heats the surface of the adhesive layer.
  • the near IR radiation can be focused very well with little effort using suitable devices, so that a directed near IR radiation with a high energy content is available which enables very short heating times of the adhesive layer to be activated in the range of a few seconds, without doing so overheating a thermally sensitive substrate.
  • the near IR radiation source preferably has a temperature radiator which can be operated at emission temperatures of 2500 K or higher, preferably at 2900 K or higher. Such radiation sources are preferably halogen lamps.
  • the near IR radiation source is typically designed as an elongated unit which, when web-shaped material dries, covers the entire web width.
  • the radiators are also adapted to the width of the molded parts to be joined.
  • a control unit regulates the energy input and thus the temperature of the adhesive layer to be heated via sensors.
  • an adhesive dispersion which contains at least one polyisocyanate which is solid at room temperature and only deactivated on the surface, and at least one polymer which is reactive with isocyanate.
  • aqueous dispersions for the production of storage-stable, latent reactive layers or powders is disclosed in EP 0922720 A1.
  • a specific method for producing storage-stable coatings is not specified in this document, in the examples it is only proposed to apply the dispersion at room temperature and to remove the water as much as possible by evaporation at room temperature and / or by infiltration into the substrate. Such a drying process is not economical for the production of functional elements for vehicle construction, especially when joining non-porous substrates that do not allow water to seep in.
  • EP 0922720 A1 with regard to the composition and preparation of aqueous dispersions which contain at least one surface-deactivated polyisocyanate and at least one polymer which is reactive with isocyanate are expressly part of the present invention.
  • the aqueous adhesive dispersion is first applied to at least one substrate part.
  • all common application methods can be used for this purpose, for example brush application, spraying, spraying, knife coating, filling, pouring, dipping, extruding, roller application or printing methods.
  • the one-component adhesive dispersion is particularly preferably applied by means of a roller or by spraying.
  • the adhesive is preferably applied exclusively to the sheet-like material of the decorative layer.
  • the drying is then carried out by the nearby IR emitters, the emitters being controlled by suitable sensors and control circuits in such a way that the adhesive layer or the substrate layer of the web-shaped decorative molded part has temperatures between 50 ° C. and 90 ° C., preferably 60 ° C. and 70 ° C does not exceed.
  • the adhesives to be used according to the invention have only a very low sensitivity to moisture, it is possible to wind the coated and dried web material on rolls and to reactivate them with the second molded part at different times and / or locations for the joining process. As a result, the joining of the flat shaped parts can take place at a spatially separate location and in time independently of the application and drying of the adhesive layer on the web material respectively.
  • the dried reactivatable adhesive layer is superficially non-tacky, so such rolled-up webs can be stored for several weeks.
  • the decorative material coated in this way can therefore be introduced with the further mold carrier part after intermediate storage or immediately in a lamination process.
  • the adhesive film will be activated by suitable control of the nearby IR emitters within a few seconds to temperatures above 100 ° C, without the substrate overheating, so that the material can be gently laminated.
  • the adhesive film reactivated in this way hardens within a few seconds and, after a few seconds (at least 5 to 10 seconds), a completely laminated part with fully reacted adhesive is generally obtained. Neither the molded carrier part nor the decorative material are subjected to high thermal loads, but cycle times for production are still very short.
  • the thermal activation of the adhesive layer can take place inline directly when the web material is fed onto the substrate carrier with the help of the near IR radiation, but it is also possible to prefabricate the web material into suitable sections first and then the adhesive layer and possibly also the carrier molding layer in one Activate the scanning process with the near - IR radiation and then join the two parts, whereby a thermal reshaping can optionally take place for the final shaping of the functional part.
  • adhesive-coated decorative layers and molded parts can be pre-assembled in their dimensions, joined to one another and placed in a heated press tool, so that thermal activation and, if appropriate, simultaneous thermal shaping take place in this heated press tool.
  • the molded parts made according to the invention from the above-mentioned substrates can preferably be used as door side parts, headlining, body pillars, hat racks, dashboards or instrument panels for vehicle construction.
  • Example 1 is intended to provide a more detailed explanation, they are only exemplary in nature and do not cover the breadth of the adhesive method according to the invention. However, the person skilled in the art can easily derive the entire range of applications from the information provided.
  • Example 1 is intended to provide a more detailed explanation, they are only exemplary in nature and do not cover the breadth of the adhesive method according to the invention. However, the person skilled in the art can easily derive the entire range of applications from the information provided.
  • Example 1 is intended to provide a more detailed explanation, they are only exemplary in nature and do not cover the breadth of the adhesive method according to the invention. However, the person skilled in the art can easily derive the entire range of applications from the information provided.
  • Example 1 is intended to provide a more detailed explanation, they are only exemplary in nature and do not cover the breadth of the adhesive method according to the invention. However, the person skilled in the art can easily derive the entire range of applications from the information provided.
  • Example 1 is intended to provide a more detailed explanation, they are only exemplary in
  • the Tramiko process is a manufacturing process of composite films from polymer layers and fiber-containing layers, see for example DE 19931323 AI
  • a 1-component dispersion containing a surface-deactivated polyisocyanate and a dispersed, isocyanate-reactive polymer (dispersion LH 1127/998, from Henkel Do s) was rolled onto the textile using a roller coating system and then rolled onto a textile using a NIR ® emitter ( Adphos) dried within 2-3 seconds.
  • the PU foam was fed onto the dried adhesive film.
  • Both substrates were lightly pressed and sealed at temperatures around 100 ° C. (can pouring method). Such a method is described, for example, in EP0891854 A2, EP0769358 A2, EP0835734 A1 or EP0829338 A1.
  • the laminate was rolled up and stored temporarily.
  • the laminate was unwound, coated by means of roller or spray dried and rolled up by means of NIR ® emitters at temperatures around 60-70 ° C and then.
  • the coated laminate was drawn into a laminating machine.
  • rectangular blanks were produced from the roll. These reach a laminating press via a clamping frame.
  • the Tramiko beam was at the bottom of the tool.
  • a spotlight field was inserted between the carrier and the textile blank.
  • the NIR ® radiators activated the Tramiko to approx. 120 ° C and the laminate to approx. 80 ° C surface temperature within a few seconds.
  • the locking time was about 5-10sec.
  • the "microcapsule" (deactivated surface) of the solid isocyanate was melted and the isocyanate portion reacted with the dispersion polymer to form a cross-linked adhesive layer. After this reaction, the adhesive layer consequently had a thermoset character and was no longer meltable. After a total of about 24 hours, the bond had completely reacted and had reached its final strength.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

L'invention concerne un procédé permettant de relier des pièces moulées plates, selon lequel une dispersion aqueuse adhésive est appliquée sur au moins une surface limite des pièces moulées à relier. Cette dispersion aqueuse adhésive est ensuite séchée avec précaution au moyen d'un rayonnement électromagnétique. Des fractions essentielles du rayonnement, qui engendrent une augmentation de température, se situent dans la gamme d'ondes de l'infrarouge proche. Des pièces moulées (en forme de bande) ainsi recouvertes peuvent être stockées temporairement, et la couche adhésive peut ensuite être activée, de façon que les pièces moulées puissent éventuellement être jointes par compression. Le procédé selon l'invention est approprié pour la production de pièces moulées conçues pour la construction automobile, en particulier pour la production de pièces latérales de porte, garnitures de toit, montants de carrosserie, plages arrières, pupitres de conduite et autres éléments fonctionnels utilisés en construction automobile.
PCT/EP2003/002142 2002-03-11 2003-03-03 Procede de production de pieces moulees plates WO2003076539A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003214087A AU2003214087A1 (en) 2002-03-11 2003-03-03 Method for producing flat moulded parts

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10210477A DE10210477A1 (de) 2002-03-11 2002-03-11 Verfahren zum Herstellen von flächigen Formteilen
DE10210477.8 2002-03-11

Publications (1)

Publication Number Publication Date
WO2003076539A1 true WO2003076539A1 (fr) 2003-09-18

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Application Number Title Priority Date Filing Date
PCT/EP2003/002142 WO2003076539A1 (fr) 2002-03-11 2003-03-03 Procede de production de pieces moulees plates

Country Status (3)

Country Link
AU (1) AU2003214087A1 (fr)
DE (1) DE10210477A1 (fr)
WO (1) WO2003076539A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2865477A1 (fr) * 2004-01-23 2005-07-29 Angega Procede de collage d'un obturateur a l'extremite d'un tube a partir d'un adhesif composite
CN104404648A (zh) * 2014-12-17 2015-03-11 浙江华峰氨纶股份有限公司 一种稀土铝酸盐蓝色长余辉聚氨酯弹性纤维的制备方法
US12000329B2 (en) 2018-12-17 2024-06-04 Aston Martin Lagonda Limited Assemblies for engines

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10352513A1 (de) * 2003-11-05 2005-06-16 Faurecia Innenraum Systeme Gmbh Formteil, Verfahren zu dessen Herstellung sowie dessen Verwendung
DE102007060240B4 (de) * 2007-12-14 2015-03-26 Lisa Dräxlmaier GmbH Verfahren zur Verklebung von zwei Schichten von flächigen Materialien

Citations (2)

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Publication number Priority date Publication date Assignee Title
DE10001777A1 (de) * 1999-02-03 2000-08-10 Basf Ag Verfahren zur Herstellung von Verklebungen mittels carbodiimidhaltiger Dispersionen unter Wärmeaktivierung
EP1164154A1 (fr) * 2000-06-15 2001-12-19 Ag Bayer Adhésifs sensibles à la pression à résistance améliorée au cisaillement à température élevée

Family Cites Families (3)

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Publication number Priority date Publication date Assignee Title
LU84911A1 (fr) * 1983-07-14 1985-04-17 Cockerill Sambre Sa Procede et installation de cuisson d'un revetement organique applique sur un support
ATE264351T1 (de) * 1997-12-11 2004-04-15 Bayer Materialscience Ag Wässrige dispersion enthaltend ein oberflächendesaktiviertes polyisocyanat
DE10024706C2 (de) * 2000-05-09 2003-01-30 Advanced Photonics Tech Ag Verfahren zur Herstellung einer geklebten Verbundstruktur

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10001777A1 (de) * 1999-02-03 2000-08-10 Basf Ag Verfahren zur Herstellung von Verklebungen mittels carbodiimidhaltiger Dispersionen unter Wärmeaktivierung
EP1164154A1 (fr) * 2000-06-15 2001-12-19 Ag Bayer Adhésifs sensibles à la pression à résistance améliorée au cisaillement à température élevée

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2865477A1 (fr) * 2004-01-23 2005-07-29 Angega Procede de collage d'un obturateur a l'extremite d'un tube a partir d'un adhesif composite
CN104404648A (zh) * 2014-12-17 2015-03-11 浙江华峰氨纶股份有限公司 一种稀土铝酸盐蓝色长余辉聚氨酯弹性纤维的制备方法
US12000329B2 (en) 2018-12-17 2024-06-04 Aston Martin Lagonda Limited Assemblies for engines

Also Published As

Publication number Publication date
DE10210477A1 (de) 2003-10-02
AU2003214087A1 (en) 2003-09-22

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