EP2029344A1 - Vehicle roof part from at least two plastic layers and method for producing said vehicle roof part - Google Patents
Vehicle roof part from at least two plastic layers and method for producing said vehicle roof partInfo
- Publication number
- EP2029344A1 EP2029344A1 EP07722433A EP07722433A EP2029344A1 EP 2029344 A1 EP2029344 A1 EP 2029344A1 EP 07722433 A EP07722433 A EP 07722433A EP 07722433 A EP07722433 A EP 07722433A EP 2029344 A1 EP2029344 A1 EP 2029344A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- plastic
- plastic layer
- vehicle roof
- layer
- roof part
- 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.)
- Withdrawn
Links
Classifications
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/16—Making multilayered or multicoloured articles
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/16—Making multilayered or multicoloured articles
- B29C2045/1682—Making multilayered or multicoloured articles preventing defects
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0025—Preventing defects on the moulded article, e.g. weld lines, shrinkage marks
Definitions
- the invention relates to a vehicle roof part made of at least two plastic layers according to the preamble of patent claim 1 and a method for producing such a vehicle roof roof part according to patent claims 10 and 11.
- a generic vehicle roof is known from DE 34 25 104 C2.
- a reinforcing rib is arranged on the underside of a roof part made of plastic. This is either formed in several parts and glued or integrally formed, in which case a cavity in the reinforcing rib should avoid too much accumulation of material, which leads to sink marks at the top of the roof part.
- a cavity produced in the internal gas pressure process on a stiffening rib of a lid is provided to avoid sink marks at the top of the lid.
- the invention has for its object to provide a vehicle roof part of at least two plastic layers and to provide a method for producing a consisting of at least two juxtaposed plastic layers roof panel by means of which sink marks on the outer visible surface avoided or at least greatly reduced.
- This object is achieved with respect to the vehicle roof part by the features of claim 1 and in terms of the method by the features of claim 10 and 11.
- Advantageous embodiments of the invention are specified in the respective subclaims.
- the invention provides in essence that a downwardly pointing, a leaching preventive increase in material is arranged on the underside of the first plastic layer of the roof part, as it were, or is formed during the production, optionally or additionally, a later sinking point can compensate Be provided material increase at the top of the first plastic layer of the roof part or be.
- the elevation has a raised positive shape complementary to an otherwise trough-shaped leaching.
- the layers of the roof part are preferably made of a polycarbonate (PC) by spraying in the two-component method.
- PC polycarbonate
- the material increase is injected directly onto the underside or the upper side of the first plastic layer.
- at least one of the plastic layers of the roof part may also be made of a polycarbonate blend, such as acrylonitrile-butadiene-styrene-polycarbonate blend (ABS-PC), a PC-copolymer or another PC-compatible material, such as Polyethylene terephthalate (PET) or polymethyl methacrylate (PMMA) exist.
- ABS-PC acrylonitrile-butadiene-styrene-polycarbonate blend
- PET Polyethylene terephthalate
- PMMA polymethyl methacrylate
- Figure 1 is a schematic perspective view of a vehicle roof in the closed state.
- Fig. 2 is a schematic partial cross section of a first embodiment of the
- Vehicle roof with a hollow chamber having
- FIG. 3 shows a schematic partial cross section of a second embodiment of the vehicle roof with a solid reinforcing rib
- Fig. 4 is an enlarged view of a roof part with a without the
- Fig. 6 is an enlarged view of a roof part of FIG. 4 without
- the vehicle roof 10 shown in Fig. 1 is composed of a front roof part 12, a rear roof part 14, a front cross member 16, a rear cross member 18 and arranged on both sides side rails 20.
- the side rails 20 can be used as separate components with the columns, the A-pillar 24, the B-pillar 26 and the C or D-pillar 28 may be connected to which the roof parts 12 and 14 are mounted fixed or movable.
- the roof parts 12 and 14 are preferably components of a RHT (Retractable Hardtop), ie a fixed-element convertible, in which the inherently rigid roof parts to release a convertible-like roof opening can be moved by means of a Mechnik in a storage space in the rear of the vehicle ,
- RHT Retractable Hardtop
- the roof parts 12 and 14 consist at least in partial areas of at least two plastic layers 32 and 34, preferably made of a polycarbonate (PC).
- a polycarbonate such as acrylonitrile-butadiene-styrene-polycarbonate blend (ABS-PC), a PC copolymer or other PC compatible material such as polyethylene terephthalate (PET) or polymethyl methacrylate (PMMA).
- ABS-PC acrylonitrile-butadiene-styrene-polycarbonate blend
- PC copolymer or other PC compatible material such as polyethylene terephthalate (PET) or polymethyl methacrylate (PMMA).
- the outer first plastic layer 32 is optionally sealed to the outside by a thin scratch-resistant, preferably transparent lacquer layer 36 (FIG. 6).
- a reinforcing rib 37 formed from a second plastic layer 34 is injection-molded with a cavity 38 formed therein.
- the reinforcing rib 37 is formed solid without a cavity.
- FIG. 4 shows how, without an application of the invention, in the region of an injection point 50 for the second plastic layer 34, a leaching 42 on the inside of the first plastic layer 32 is produced by the plastic material impinging on the separating surface 40.
- the depth D 42 of the leaching 42 is about 1 to 1, 5 mm.
- a convex material increase Z 42 is formed on the inside of the first plastic layer 32 Shape and size is approximately complementary to the otherwise occurring at this point leaching 42 (Figure 4).
- the material increase Z 42 is positioned exactly at the level of the injection point 50 for the second plastic layer 34.
- the arched material increase Z 42 is again exactly removed, so that, as shown in FIG. 6, the parting surface 40 between the two plastic layers 32 and 34 in the finished roof part 12 is ideally completely flat.
- a further material increase Z 44 is provided on the opposite outer side of the first plastic layer 32, which is only a few thousandths of a millimeter high and compensates for a shrinkage starting from a washout 42 on the inside of the plastic layer 32.
- the material increase Z 44 is provided as a deterrent to shrinkage on the outside.
- the invention provides a simple cost-effective way to create a vehicle roof part or an entire roof module made of plastic optionally with integrated Holmen without visually disadvantageous sink marks on the outer visible surfaces.
- the surface is preferably formed high gloss (glazing).
- a pillar D 34 thickness (from 34)
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Body Structure For Vehicles (AREA)
- Laminated Bodies (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200610022921 DE102006022921B4 (en) | 2006-05-15 | 2006-05-15 | Vehicle roof part of at least two plastic layers and method for producing such a vehicle roof part |
PCT/DE2007/000885 WO2007131493A1 (en) | 2006-05-15 | 2007-05-15 | Vehicle roof part from at least two plastic layers and method for producing said vehicle roof part |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2029344A1 true EP2029344A1 (en) | 2009-03-04 |
Family
ID=38512404
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07722433A Withdrawn EP2029344A1 (en) | 2006-05-15 | 2007-05-15 | Vehicle roof part from at least two plastic layers and method for producing said vehicle roof part |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2029344A1 (en) |
DE (1) | DE102006022921B4 (en) |
WO (1) | WO2007131493A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6357935B2 (en) * | 2014-07-14 | 2018-07-18 | 三菱エンジニアリングプラスチックス株式会社 | Multicolor molded product and molding method thereof |
JP6405908B2 (en) * | 2014-11-07 | 2018-10-17 | 三菱エンジニアリングプラスチックス株式会社 | Multicolor molded product and molding method thereof |
CN114216807A (en) * | 2022-01-30 | 2022-03-22 | 重庆长安汽车股份有限公司 | Method for testing wear resistance of automotive interior plastic part |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5544817A (en) * | 1978-09-25 | 1980-03-29 | Aisin Seiki Co Ltd | Method for molding hydrauric cylinder |
JPS59146826A (en) * | 1983-02-10 | 1984-08-22 | Hashimoto Forming Co Ltd | Manufacture of synthetic resin molded item |
DE3425104C2 (en) * | 1984-07-07 | 1986-07-24 | Farmont Produktion GmbH & Co KG, 4000 Düsseldorf | Sun roof for vehicles |
JP3006069B2 (en) * | 1990-10-26 | 2000-02-07 | タカタ株式会社 | Module cover for airbag device |
JPH068314A (en) * | 1992-06-26 | 1994-01-18 | Toppan Printing Co Ltd | Preform for molding sheet and manufacture of container |
DE4334012C1 (en) * | 1993-10-06 | 1994-10-27 | Webasto Karosseriesysteme | Panel of a sliding roof or tilt-and-slide roof for vehicles |
JPH1177740A (en) * | 1997-09-17 | 1999-03-23 | Toyota Autom Loom Works Ltd | Resin molded article, manufacture thereof, and molding tool therefor |
US8173244B2 (en) * | 2004-01-14 | 2012-05-08 | Franz Josef Summerer | Transparent sheet-like shaped plastic part with concealed sprue mark, and process for producing it |
CA2457266A1 (en) * | 2004-02-11 | 2005-08-11 | Dbm Reflex Enterprises Inc. | Injection process for large-sized retroreflecting prisms |
-
2006
- 2006-05-15 DE DE200610022921 patent/DE102006022921B4/en not_active Expired - Fee Related
-
2007
- 2007-05-15 EP EP07722433A patent/EP2029344A1/en not_active Withdrawn
- 2007-05-15 WO PCT/DE2007/000885 patent/WO2007131493A1/en active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2007131493A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE102006022921B4 (en) | 2008-02-07 |
WO2007131493A1 (en) | 2007-11-22 |
DE102006022921A1 (en) | 2007-11-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20081210 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL BA HR MK RS |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: BOSS, MARKUS Inventor name: LANG, ANDREAS Inventor name: SCHWAIGHOFER, RALF Inventor name: POLLAK, MARTIN |
|
17Q | First examination report despatched |
Effective date: 20090402 |
|
DAX | Request for extension of the european patent (deleted) | ||
RBV | Designated contracting states (corrected) |
Designated state(s): DE FR GB IT |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
RTI1 | Title (correction) |
Free format text: METHOD FOR PRODUCING A VEHICLE ROOF PART |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20120322 |