EP4331730A1 - Dispositif de fixation d'éléments à peindre - Google Patents

Dispositif de fixation d'éléments à peindre Download PDF

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Publication number
EP4331730A1
EP4331730A1 EP23191286.6A EP23191286A EP4331730A1 EP 4331730 A1 EP4331730 A1 EP 4331730A1 EP 23191286 A EP23191286 A EP 23191286A EP 4331730 A1 EP4331730 A1 EP 4331730A1
Authority
EP
European Patent Office
Prior art keywords
holding
polymer
support frame
painting
modifier
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.)
Pending
Application number
EP23191286.6A
Other languages
German (de)
English (en)
Inventor
Marcos Adler
Manfred Schwartz
Oliver Kupfer
Frank Gollwitzer
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.)
Oliver Kupfer EK
RESRG Automotive SE and Co KG
Original Assignee
Oliver Kupfer EK
Rehau Automotive SE 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 Oliver Kupfer EK, Rehau Automotive SE and Co KG filed Critical Oliver Kupfer EK
Publication of EP4331730A1 publication Critical patent/EP4331730A1/fr
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/02—Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
    • B05B13/0285—Stands for supporting individual articles to be sprayed, e.g. doors, vehicle body parts

Definitions

  • skids In order to apply paintwork to components, in particular made of plastic for the automotive industry, for example trim components, in particular bumpers, rear spoilers, fenders, etc., these components must be positioned and, if necessary, fixed.
  • the corresponding devices for holding the components are also referred to as stacking systems or skids.
  • Such skids are in, for example EP 2 520 374 A1 or EP 2 040 854 B1 described.
  • the skids are usually mounted on conveyor systems and transported with the components arranged on them through the corresponding painting system. After a defined number of painting cycles (arrangement of the component(s) to be painted on the skid, painting, removal of the component(s) from the skid), which is item-related, the skids are removed from the conveyor system and transported for paint stripping.
  • the skids are made of metal, for example stainless steel or aluminum.
  • Metal skids have the advantage of electrostatic charge capability, but they are heavy. This makes their handling in the paint shop, e.g. transporting them using robots etc., difficult.
  • the skids are thermally stripped of paint in an incineration oven. In order to burn the paint, temperatures of around 600 - 800°C are required in the oven, so such a process is very energy-intensive. After the skids come out of the oven free of paint and are subsequently cooled, they are usually cleaned using shot blasting, which can be carried out with a high-pressure cleaner.
  • the other variant of the Paint removal is the chemical process that is particularly suitable for aluminum skids.
  • a dipping tank is filled with a chemical into which the skids are inserted. After a defined time, the skids are removed from the cleaning bath and washed off with a steam jet.
  • the previously known paint removal processes are comparatively complex.
  • skids made from polymers which offer significant weight advantages over metal versions.
  • adhesion of paint to polymer skids is usually so good that they are difficult to clean.
  • care must be taken to ensure that they can withstand the high mechanical loads (notched impact strength, impact strength, flexural rigidity, etc.) of the steam radiation required for cleaning.
  • the thermal and chemical load on the skids in a painting system is also comparatively high (blow zone for water removal, drying oven, solvent vapor, resistance to primer, base coat, clear coat and, if necessary, alkaline cleaning agents, rinse water with bactericide, etc.).
  • the invention is based on the object of providing a device with the features described above, which is characterized by a low weight and at the same time good cleanability with sufficient resilience.
  • the holding device has a surface made of a polymer to which, in order to improve the surface cleaning properties, at least one modifier in the form of a rapeseed oil-based erucamide (e.g. Armoslip® from PMC) and/or a glycerol monostearate (e.g. Armostat ® from AkzoNobel) and/or a wax based on a polyolefin, in particular LDPE or PP, or polyester (e.g. Ceralene ® from EuroCeras) and/or a light stabilizer and/or a UV absorber (e.g. Tinuvin ® from EuroCeras). .
  • a rapeseed oil-based erucamide e.g. Armoslip® from PMC
  • a glycerol monostearate e.g. Armostat ® from AkzoNobel
  • a wax based on a polyolefin, in particular LDPE or PP or polyester (e
  • the UV absorber can contain a benzotriazole and/or (eg nanoscale) titanium dioxide and/or iron oxide and/or zinc oxide and/or stearates.
  • organic UV absorbers such as 2-(2-hydroxyphenyl)-2H-benzotriazoles (e.g. 2-( 2H- benzotriazol-2-yl)-4,6-bis(2- phenyl-2-propanyl)phenol and 2-(2H-benzotriazol-2-yl)-4,6-di-tert-butylphenol),(2-hydroxyphenyl)-s-triazines, hydroxybenzophenones or oxalanilides.
  • Sterically hindered amines Hindered Amine Light Stabilizers, “HALS” for short
  • HALS Hindered Amine Light Stabilizers
  • the aforementioned modifiers according to the invention significantly facilitate the removal of paint from the polymeric surface while at the same time ensuring sufficient resilience of the corresponding device when used as intended in a paint shop.
  • the polymer is expediently based on polypropylene (PP), polymethyl methacrylate (PMMA), polycarbonate (PC), polyethylene (PE), polyvinyl chloride (PVC), acrylonitrile styrene acrylate (ASA) or acrylonitrile butadiene styrene (ABS).
  • PP polypropylene
  • PMMA polymethyl methacrylate
  • PC polycarbonate
  • PE polyethylene
  • PVC polyvinyl chloride
  • ASA acrylonitrile styrene acrylate
  • ABS acrylonitrile butadiene styrene
  • the non-polar polymers PP and PE are particularly preferred because, due to their non-polar behavior, they have a low affinity for the generally polar paint particles.
  • the at least one modifier is added to the polymer in a proportion by weight of at least 0.1%, preferably at least 0.2%, based on the total mass of the modified polymer. It is further preferred that the at least one modifier is added to the polymer in a weight proportion of at most 5%, preferably at most 2%, in particular at most 1%, based on the total mass of the modified polymer.
  • the support frame can be made of metal, in particular steel or aluminum. This hybrid combination of metallic support frame and polymeric holding device results in favorable utilization of the weight-saving properties of the holding device on the one hand and the high mechanical load capacity of the support frame on the other hand, which is generally exposed to significantly greater forces than the holding device (e.g. due to the arrangement of a large number of holding devices on it). Electrical lines can be integrated into the support frame in order to electrically contact the at least one polymeric holding device. This allows the polymeric holding device to be electrostatically charged in order to promote the painting process. The paint is then removed from the holding device in a non-electrostatically charged state.
  • the invention furthermore relates to a method for painting components, wherein the components are held during painting by means of one of the devices described above and wherein the device is cleaned after several painting processes have been carried out in order to remove paint overspray.
  • the cleaning of the device is expediently carried out after at least 20, preferably at least 30, in particular at least 40 painting processes. This results in a comparatively low frequency of the cleaning process. Furthermore, it has proven to be advantageous if the cleaning of the device is carried out after a maximum of 80, preferably a maximum of 70, in particular a maximum of 60 painting processes. This prevents the paint from adhering too intensively to the device, in particular to the at least one holding device, which can make the cleaning process more difficult.
  • the device in particular the holding device, is preferably cleaned using steam radiation and/or pressurized water irradiation.
  • the plates produced in this way were cut into strips measuring 10 cm long ⁇ 10 cm wide ⁇ 3 mm thick and notches were made in the middle of the upper edge of each.
  • a diamond could be constructed.
  • This diamond was mixed with a typical primer R1472 slate gray from Wörwag Stuttgart with a so-called standard hardener (Waeropur ® hardener 103632) in a mixing ratio of 100:10 (weight of primer to hardener) and applied with a hand gun in such a way that a dry layer thickness of approx. 15 ⁇ m was achieved.
  • the material was then dried in a circulating air oven for 30 minutes at an object temperature of 80°C.
  • the primer provides a uniform conductivity of the surface and serves as an adhesion promoter between the plastic surface and the base coat.
  • a base coat of black uni from BASF Coatings Weg (alternatively from BASF Gletscher spa, AKZO Manhattangrau or Hyacithrot) was then applied with a hand gun so that a dry film thickness of approx. 12 ⁇ m was achieved.
  • the material was then dried in a circulating air oven for 10 minutes at an object temperature of 80°C.
  • the clear coat R3209 from Wörwag mixed with a so-called standard hardener in a mixing ratio of 100:35 (weight of clear coat to hardener), was then applied with a hand spray gun so that a dry film thickness of approx. 35 ⁇ m was achieved.
  • the material was then dried in a circulating air oven for 45 minutes at an object temperature of 80°C. After drying/curing, the panels were conditioned at 60°C for 48 hours.
  • the clear coat provides mechanical and chemical protection and protection against environmental pollution.
  • the painted panels of Examples A to D described above were irradiated with a conventional steam jet device from K ⁇ RCHER (hot water high-pressure jetter HDS 9/17-4 C) in order to simulate paint removal.
  • K ⁇ RCHER hot water high-pressure jetter HDS 9/17-4 C
  • This steamer can increase a water temperature from 12°C up to 155°C. This makes it possible to reduce the working pressure, the time required and the amount of cleaning agents to be used. With a pressure force of 30 to 170 bar, the device is ideal for such development tests.
  • the high-pressure cleaner was set to 60°C and with a pressure force of 100 bar in order to simulate a paint stripping process that is common in the production of components in the automotive industry.
  • Example polymer Jet of steam onto the painted surface of the diamond See A Atech® 2000 Paint lasts b Atech ® 2000 with 0.2% Tinuvin ® 770 Paint comes off C Atech ® 2000 with 0.4% Tinuvin ® 770 Paint is removed more easily D PP-EPDM Finalloy ® 830-1 Lacquer comes off easily
  • FIG. 1 shows schematically a side view of a device according to the invention:
  • a device for holding polymeric external add-on parts 100 for motor vehicles to be painted with a support frame 1 and several holding devices 2 arranged on the support frame 1, each of which is equipped with holding elements 3 for holding one component 100 during the painting process.
  • the holding devices 2 each have a surface made of a polymer which, in order to improve the surface cleaning properties, contains at least one modifier in the form of an erucamide based on rapeseed oil and/or a glycerol monostearate and/or a wax based on a polyolefin, in particular LDPE or PP, or polyester and/or a light stabilizer and/or a UV absorber and/or talc and/or EPDM is added.
  • a polymer which, in order to improve the surface cleaning properties, contains at least one modifier in the form of an erucamide based on rapeseed oil and/or a glycerol monostearate and/or a wax based on a polyolefin, in particular LDPE or PP, or polyester and/or a light stabilizer and/or a UV absorber and/or talc and/or EPDM is added.

Landscapes

  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
EP23191286.6A 2022-08-29 2023-08-14 Dispositif de fixation d'éléments à peindre Pending EP4331730A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102022121791.4A DE102022121791A1 (de) 2022-08-29 2022-08-29 Vorrichtung zur Halterung von zu lackierenden Bauteilen

Publications (1)

Publication Number Publication Date
EP4331730A1 true EP4331730A1 (fr) 2024-03-06

Family

ID=87571665

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23191286.6A Pending EP4331730A1 (fr) 2022-08-29 2023-08-14 Dispositif de fixation d'éléments à peindre

Country Status (2)

Country Link
EP (1) EP4331730A1 (fr)
DE (1) DE102022121791A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2520374A1 (fr) 2011-05-05 2012-11-07 Asis Gmbh Procédé et dispositif destinés au laquage
EP2040854B1 (fr) 2006-07-14 2013-09-04 Dürr Systems GmbH Installation de mise en peinture et procédé de fonctionnement associé
CN106622713A (zh) * 2016-09-19 2017-05-10 东风商用车有限公司 一种非金属件面漆静电喷涂接地装置
FR3045421A1 (fr) * 2015-12-18 2017-06-23 Plastic Omnium Cie Support pour peinture d'une piece automobile
WO2019011784A1 (fr) * 2017-07-12 2019-01-17 Arkema France Composition de revêtement durcissable par rayonnement, pour améliorer les propriétés de surface de plastiques

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2040854B1 (fr) 2006-07-14 2013-09-04 Dürr Systems GmbH Installation de mise en peinture et procédé de fonctionnement associé
EP2520374A1 (fr) 2011-05-05 2012-11-07 Asis Gmbh Procédé et dispositif destinés au laquage
FR3045421A1 (fr) * 2015-12-18 2017-06-23 Plastic Omnium Cie Support pour peinture d'une piece automobile
CN106622713A (zh) * 2016-09-19 2017-05-10 东风商用车有限公司 一种非金属件面漆静电喷涂接地装置
WO2019011784A1 (fr) * 2017-07-12 2019-01-17 Arkema France Composition de revêtement durcissable par rayonnement, pour améliorer les propriétés de surface de plastiques

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Publication number Publication date
DE102022121791A1 (de) 2024-02-29

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Owner name: RESRG AUTOMOTIVE SE & CO. KG

Owner name: OLIVER KUPFER E.K.