Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • B62D—MOTOR VEHICLES; TRAILERS
  • B62D65/00—Designing, manufacturing, e.g. assembling, facilitating disassembly, or structurally modifying motor vehicles or trailers, not otherwise provided for
  • B62D65/02—Joining sub-units or components to, or positioning sub-units or components with respect to, body shell or other sub-units or 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
  • B29C33/00—Moulds or cores; Details thereof or accessories therefor
  • B29C33/12—Moulds or cores; Details thereof or accessories therefor with incorporated means for positioning inserts, e.g. labels
  • B29C33/14—Moulds or cores; Details thereof or accessories therefor with incorporated means for positioning inserts, e.g. labels against the mould wall
• • 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
  • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
  • B29C51/08—Deep drawing or matched-mould forming, i.e. using mechanical means only
  • B29C51/082—Deep drawing or matched-mould forming, i.e. using mechanical means only by shaping between complementary mould parts
• • 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
  • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
  • B29C51/12—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor of articles having inserts or reinforcements
• • 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
  • B29C2791/00—Shaping characteristics in general
  • B29C2791/004—Shaping under special conditions
  • B29C2791/006—Using vacuum
• • 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
  • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
  • B29C51/10—Forming by pressure difference, e.g. vacuum
• • 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
  • B29L2031/3008—Instrument panels
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
  • Y10T156/10—Methods of surface bonding and/or assembly therefor
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
  • Y10T156/10—Methods of surface bonding and/or assembly therefor
  • Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
  • Y10T156/10—Methods of surface bonding and/or assembly therefor
  • Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
  • Y10T156/1039—Surface deformation only of sandwich or lamina [e.g., embossed panels]
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/23—Sheet including cover or casing

Definitions

• the present invention relates to a method of manufacturing a component of an interior trim assembly for a motor vehicle. More particularly, the invention relates to [preamble rev. 1].
• Such a fixing method is known from FR 2 900 862 A1.
• a multi-component skin member is secured within a forming tool by a vacuum effect from the forming tool. Nevertheless, this fixing solution is insufficient. Indeed, the localized vacuum fixing the skin element must be made with a perfect seal, which is often difficult to implement, especially in the presence of rugged surfaces. Any leakage may negate the binding effect.
• the surfaces are inclined more than 30 °, especially during the pressing step by the insert, the vacuum holding force is insufficient to retain the skin element in position.
• An object of the invention is therefore to improve the fixing and maintenance of an interior trim assembly component on a member of a forming tool.
• this object is achieved by a manufacturing method of the aforementioned type, characterized in that [characterizing part Rev 1].
• the strength of adhesion of the component to the member is better controlled. This allows in particular to position the component in more inclined areas of the body.
• an adhesive makes it possible to vary the shape of the component and its location on the member of the forming tool, the adhesive used can be adapted to the geometrical shape of the component, and the component can then be applied against various areas of the forming tool member. It should be noted that the adhesion forces of this adhesive must be determined taking into account the bonding force between the first and the second component.
• the fixing method comprises one or more of the following characteristics taken separately or in any technically possible combination:
• FIG. 1 is a cross-sectional view of a multi-component interior trim assembly according to the invention
• FIG. 2 is a cross-sectional view of a forming tool according to the invention.
• FIG. 3 shows the step according to the invention consisting in covering the interior trim assembly component with an adhesive in order to fix it on a member of the forming tool;
• FIG. 4 illustrates the manufacture according to the invention of the multi-component interior trim assembly using the forming tool.
• Figure 1 shows in cross section a set of interior trim 2 multi-component for a motor vehicle.
• the interior trim assembly 2 may in particular serve as a coating on the dashboard of a motor vehicle.
• the shape of the cross-section of the inner cladding element 2 generally corresponds to that of a hat, with a central projection 14, bordered on each side by a straight section 16.
• the inner lining assembly 2 here comprises three components, namely a first component consisting of a decorative element 4, a second component formed a complexed sheet 6 and a third component forming an insert 8.
• a first component consisting of a decorative element 4, a second component formed a complexed sheet 6 and a third component forming an insert 8.
• the decorative element 4 is a board, in particular a thickness of about 400 microns, made of polycarbonate.
• the decorative element 4 has a first appearance surface 20 which is intended to be visible in the assembled state of the interior trim assembly 2, and a second connecting surface 22 connecting to the complexed sheet 6.
• the complexed sheet 6 comprises a film 10 preferably of polyphenylene oxide (PPO) or thermoplastic olefin (TPO), and a foam 12 preferably of polypropylene (PP) secured to the film 10.
• insert 8 is preferably made of polypropylene (PP) and imparts the necessary rigidity to the interior trim assembly 2.
• the decorative element 4 and the insert 8 are embedded in the complexed sheet 6.
• the decorative element 4 is located on an outer face 18 of the projection 14.
• the appearance surface 20 of the decorative element 4 forms part of the outer face 18 of the projection 14.
• the insert 8 is located on the inner side of the projection 14, opposite the decorative element 4.
• FIG. 2 shows a cross section of the forming tool 24 according to the invention which serves to manufacture the interior trim assembly 2 of FIG. 1.
• the forming tool 24 comprises two members, namely a concave mold 26 and a punch 28.
• the mold 26 and the punch 28 are of complementary shapes.
• the mold 26 comprises a central depression 30 adapted to pick a central projection 32 of the punch 28.
• the forming tool 24 is a vacuum forming tool.
• a forming surface 34 of the depression 30 of the mold 26 is provided with a graining.
• a polycarbonate plate is obtained in order to produce the decorative element 4.
• Such plates are delivered with a protective film 36 (see FIG. 3) serving to protect the surface of the plate.
• the protective film 36 is a peelable film, i.e. it can be removed from the surface of the polycarbonate plate.
• an adhesive 44 is applied to the protective film 36 of the polycarbonate sheet.
• the protective film 36 may also be removed from the polycarbonate plate prior to application of the adhesive 44.
• the adhesive 44 is in the form of a double-sided adhesive film with a first adhesive face 46 and a second adhesive face 48.
• This type of double-sided adhesive film is supplied in roll form, the first Adhesive face 46 is covered with a peelable interlayer film 50.
• a section of the double-sided adhesive film 44 is detached from the roll and a piece of adhesive film 44 is cut with a shape corresponding to that of the polycarbonate sheet.
• the adhesive film piece 44 is applied with its second adhesive face 48 on the protective film 36 of the polycarbonate sheet. If the protective film 36 has already been removed, the second adhesive face 48 is applied directly to the polycarbonate plate surface.
• a double-sided adhesive 44 offers a wide possibility of adjusting the adhesion forces of each of the faces 46, 48 of the film.
• the use of the double-sided film 44 or any interposed film such as the protective film 36 confers an advantageous characteristic on the finished dressing assembly 2.
• the excess thickness of the film 36 positions the surface of appearance 20 of the decorative element 4 slightly set back relative to the outer surface of the second component 6.
• the risk of tearing off the decor 4 of the finished trim 2 set is decreased compared to the case where it would be perfectly flush.
• the adhesion strength of the adhesive 44 on the surface 34 of the forming member 26 it should be noted that the presence of graining reliefs has the effect of reducing this force.
• this same forming member 26 can be used to manufacture an interior trim assembly not including the first component 4, and therefore to save on production costs.
• the adhesive 44 is heat resistant at least to a temperature of about ⁇ ⁇ ' ⁇ , i.e. the adhesive retains its adhesive properties up to that temperature.
• a heat-activatable adhesive 38 is deposited on the bonding surface 22 of the polycarbonate sheet.
• the heat-activatable adhesive 38 has an activation temperature which is preferably quite high, in particular from 45 ° C. to 90 ° C. However, the activation temperature is advantageously chosen to be lower than the heat resistance temperature of the adhesive 44.
• the decorative element 4 is then cut in the polycarbonate plate according to the desired geometry.
• the adhesive 44 it is conceivable to deposit the adhesive 44 so that it covers only a part of the appearance surface 20 of the decorative element 4. Nevertheless, it is preferable that the adhesive 44 covers substantially all the surface of appearance 20 to ensure a good maintenance of the decorative element 4 over its entire surface and thus to avoid, during the manufacture of the interior trim assembly 2, a marking or a deformation of the decorative element 4 at zones of the surface of appearance 20 not covered with adhesive 44.
• Figure 3 shows the decorative element 4 when cut, with the heat-activatable adhesive 38 spread on the bonding surface 22 and the adhesive 44 covering the surface of appearance 20.
• the thickness of the interlayer film 50 is about 100 micrometers
• the thickness of the double-sided adhesive film 44 about 100 micrometers
• the thickness of the protective film 36 between 50 and 500 micrometers depending on the desired desaffleur
• the thickness of the element of decor 4 about 400 micrometers
• the layer assembly 37 consisting of the decorative element 4 provided with adhesive 38, the protective film 36 and adhesive 44 is then fixed on the mold 26 of the forming tool 24, as shown in FIG. 4. More specifically, the coated surface of adhesive 44 of the decorative element 4 is applied against the surface of forming 34 of the depression 30 of the mold 26.
• the complexed sheet 6 and the insert 8 are then inserted into the forming tool 24, the complexed sheet 6 being held between the mold 26 and the punch 28, the insert 8 being placed on the projection 32 of the punch 28.
• the complexed sheet 6 is preheated, preferably by infrared radiation, at a temperature which may be between 1000 and 240 depending on the nature of the sheet. We are then in the state shown in Figure 4.
• the next step is to activate the forming tool 24.
• the mold 26 and the punch 28 come closer to each other in order to deform the complexed sheet 6 around the projection 32 of the punch 28, so as to the complexed sheet 6 conforms to the shape of the protrusion 32.
• the set of layers 37 is pressed into the complexed sheet 6.
• the glue 38 is activated and thus the decorative element 4 is bonded to the complexed sheet 6.
• a vacuum is applied in the residual space 52 situated between the mold 26 and the complexed sheet 6.
• the complexed sheet 6 is sucked towards the forming surface 34 of the mold 26.
• a graining of the surface of the complexed sheet 6 is obtained. It is then found in the state represented in FIG. 5.
• the concave mold 26 is preferably regulated at a relatively high temperature, from 60 ° to 90 °, i.e. at a temperature below the heat resistance temperature of the adhesive 44 and close to the temperature. activation temperature of the glue 38.
• the punch 28 is regulated at a more usual temperature, for example of the order of 40 ° C.
• the mold 26 and the punch 28 are moved apart from each other to release the interior trim assembly 2.
• the double-sided adhesive film 44 remains stuck to the protective film 36 or on the surface of appearance 20 of the decorative element 4, the double-sided adhesive film having been chosen so as to ensure an adhesive force between the adhesive film 44 and the protective film 36 / surface of appearance 20 greater than the adhesive force between the adhesive film 44 and the forming surface 34 of the depression 30 of the mold 26.
• the interior trim assembly 2 is removed from the punch 28.
• the protective film 36 In the presence of the protective film 36, it is removed from the decorative element 4, which has the effect of removing at the same time the double-sided adhesive film 44. In the absence of film protector 36, the double-sided adhesive film is removed directly from the appearance surface 20.
• the adhesive force between the adhesive film and the surface 34 of the forming member is less than or equal to 5 N / cm.
• the adhesive 44 has a degree of crosslinking greater than 90% in order to prevent fouling of the surface 34 of the formatting member 26.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Manufacturing & Machinery (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Transportation (AREA)
• Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
• Lining Or Joining Of Plastics Or The Like (AREA)
• Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
• Instrument Panels (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=42651358

Family Applications (1)

Country Status (7)

Families Citing this family (4)

Family Cites Families (18)

• 2010
  • 2010-01-20 FR FR1050367A patent/FR2955287B1/fr active Active
• 2011
  • 2011-01-20 EP EP11705642A patent/EP2525960A1/de not_active Withdrawn
  • 2011-01-20 US US13/574,002 patent/US20130316121A1/en not_active Abandoned
  • 2011-01-20 CN CN2011800124564A patent/CN102781648A/zh active Pending
  • 2011-01-20 KR KR1020127021552A patent/KR20120118041A/ko not_active Application Discontinuation
  • 2011-01-20 WO PCT/FR2011/050098 patent/WO2011089359A1/fr active Application Filing
  • 2011-01-20 JP JP2012549402A patent/JP5981849B2/ja not_active Expired - Fee Related

Non-Patent Citations (2)

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