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WO2015086199A1 - Charnières intégrales en matières plastiques renforcées par des fibres et procédé de fabrication - Google Patents

Charnières intégrales en matières plastiques renforcées par des fibres et procédé de fabrication Download PDF

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Publication number
WO2015086199A1
WO2015086199A1 PCT/EP2014/072124 EP2014072124W WO2015086199A1 WO 2015086199 A1 WO2015086199 A1 WO 2015086199A1 EP 2014072124 W EP2014072124 W EP 2014072124W WO 2015086199 A1 WO2015086199 A1 WO 2015086199A1
Authority
WO
WIPO (PCT)
Prior art keywords
component
plastic
film hinge
reinforced
fiber
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.)
Ceased
Application number
PCT/EP2014/072124
Other languages
German (de)
English (en)
Inventor
Philipp Seidl
Nikolaus Feichtenschlager
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.)
Lisa Draexlmaier GmbH
Original Assignee
Lisa Draexlmaier GmbH
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 Lisa Draexlmaier GmbH filed Critical Lisa Draexlmaier GmbH
Priority to MYPI2016000900A priority Critical patent/MY196091A/en
Publication of WO2015086199A1 publication Critical patent/WO2015086199A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/36—Feeding the material to be shaped
    • B29C44/38—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length
    • B29C44/42—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length using pressure difference, e.g. by injection or by 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/3442—Mixing, kneading or conveying the foamable material
    • B29C44/3446—Feeding the blowing agent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2077/00—Use of PA, i.e. polyamides, e.g. polyesteramides or derivatives thereof, as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/12—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of short lengths, e.g. chopped filaments, staple fibres or bristles
    • 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
    • B29L2031/22—Hinges, pivots
    • 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

Definitions

  • the invention relates to a method for producing a synthetic material component with a film hinge, such
  • DE 103 08 246 AI describes a bearing shell made of plastic, by means of an injection molding process
  • Stretching of the film hinge during assembly is particularly low, fiber reinforced materials can be used without the risk of destroying the
  • fiber reinforced, especially glass fiber reinforced, plastics are often desirable due to the strengths and stiffnesses achieved by the fibers, and are indispensable in some applications, particularly in the automotive industry.
  • An object of the invention is to provide a method for producing a fiber-reinforced plastic component with a film hinge with reduced manufacturing costs, reduced component weight and / or a reduced number of component components, such a plastic component and a corresponding film hinge.
  • the object is achieved with a method according to claim 1, a component according to claim 12 and a film hinge according to
  • the invention aims to provide a component of a
  • fiber-containing plastic melted in an injection mold.
  • the fibers can be added to the plastic melt in the injection mold or the plastic can with already contained fibers in the
  • the Plastic as granules before and is introduced about a funnel in the injection mold.
  • the tool may in this case be, for example, a rod casting system or a hot runner system provided with a needle closure.
  • screw extruders are used, wherein the supplied plastic or the supplied Kunststoffstoffgranulat by
  • the plastic is made by means of a foaming agent
  • frothed This happens, for example, during the so-called physical foaming during or after the Aufschmelzung by a gas, preferably nitrogen, is introduced under pressure into the melt.
  • a gas preferably nitrogen
  • the foaming can be achieved by means of a blowing agent added to the plastic. This procedure is called chemical foaming.
  • the foamed plastic melt is injected into a cavity of a component mold having a portion for forming a film hinge.
  • the component form is effectively the template for the component. It has the cavity whose contour corresponds to the component.
  • the component form is expediently multi-part,
  • the component form is opened.
  • film hinge may be an area, preferably rectilinear extent, with tapered
  • the wall thickness is determined so that the nature of the film hinge, including in particular the flexibility and Strength, a hinge-like pivoting of the component allows without this breaks. More specifically, the component has a first component portion and a second component
  • the film hinge preferably has a material thickness in the range from 0.5 to 0.8 mm, more preferably approximately 0.65 mm on.
  • the film hinge itself as part of the component, consists of a fiber-reinforced, foamed plastic.
  • component can be understood here to mean that, in addition to the film hinge one or more
  • Sections are present, which have a much lower flexibility compared to the hinge, until the complete disappearance of the bending ability, and the
  • fiber-reinforced plastic components can be manufactured which are based on integral, i. one-piece fashion, containing a movie hinge.
  • the strength of the fiber-reinforced plastic is combined here with the flexibility of a film hinge.
  • the finished Kunststoffoffoffbauteil further advantages that arise due to the foaming. This includes, in particular, the lower weight and the lower material consumption, at substantially the same level Load capacity.
  • Film-reinforced fiber-reinforced plastic reduces manufacturing time and effort, improves durability and reduces wear
  • the plastic is reinforced with glass fibers, since this is extremely robust to mechanical stress.
  • the basis is thermoset and
  • Thermoplastic plastics in particular polyamide, in particular polyamide
  • the foaming agent comprises a gas which is melted under pressure into the melted or in
  • Nitrogen and / or carbon dioxide are particularly suitable as foaming gases.
  • Injection molding tool may have a special mixing zone, in which the gas is injected, or the gas can be approximately in the worm gear for melting and
  • Foaming agent leaves the in the injection mold
  • plastic to be introduced, so that a conventional method based thereon can be modified with relatively simple means.
  • the gas fraction is preferably in the range of 0.2% to 0.4%.
  • the gas fraction preferred here was considered to be a suitable compromise from the retention of the original
  • the foaming agent includes
  • the plastic is injected into the component mold via one or more injection points, the injection points not being located directly on the region of the component form intended to form the film hinge.
  • the dimensioning and positioning of the injection point (s) should be adapted to the component volume. This can be done, for example, under
  • the plastic is a polyamide suitable for
  • foamed KunststoffStoffbaumaschinener in vehicle construction is very suitable. It combines in an excellent way the requirements for strength and stability of the component, as well as the
  • the fiber content may be between 10% and 40%, preferably at substantially 30%.
  • the fill time is in the range of 0.5 to 1 second, more preferably less than 0.8 second.
  • Spray pressure can then rise to about 1400 bar, which is a result of the high Anspritz für Accord.
  • the tool temperature should preferably not fall below 40 ° C in the affected area.
  • the final geometry in this case is defined by the internal melt pressure.
  • Transport sector in general, in particular aviation and shipping, in furniture, home automation, etc ..
  • the present invention is particularly suitable for the production of components for vehicles, since it is very much on an attractive appearance over a long service life at high
  • the invention comprises a
  • the invention comprises a living hinge of one
  • Figures la to lc show the cross section of a
  • Figure 2a is a three-dimensional view of one
  • FIG. 2b shows the area of a film hinge enlarged in cross section.
  • Figures 3a and 3b are interior views of a two-part component form.
  • Figures la to lc show an injection mold 1 and a component mold 20 for producing a component 30 with a film hinge of a foamed, fiber-reinforced
  • the injection mold 1 has a funnel 2 and a cylinder 3 around which a heating tape 4 is laid and in which a worm 5 is rotatably provided.
  • plastic material granules are introduced via the hopper 2 in the cylinder 3 during plasticizing.
  • the granules are melted by rotating the screw 5 and supplying heat from outside through the heating bands 4 and by shearing heat to a thermoplastic composition and through
  • Helical flights 5 ' which are formed by thread-like screw walls 5'', transported in a screw antechamber 6.
  • the molten thermoplastic molding material becomes due to a forward movement of the screw 5 in a
  • Cavity 21 of the component mold 20 injected.
  • a holding pressure phase with subsequent cooling phase becomes active, which determines the dimensional accuracy, shrinkage and the distortion of the component 30.
  • the component mold 20 is opened and the finished component 30 is ejected.
  • the granules which is supplied via the hopper 2, already with fibers, preferably glass fibers, added.
  • reinforcing fibers may be introduced into the cylinder 3 via a separate access, not shown in the figures.
  • gas preferably nitrogen
  • an injector which is indicated by an arrow 7 in FIG. 1a.
  • a blowing agent may be included in the granules that is supplied via the hopper 2.
  • the gas and / or propellant now leads to a foaming of the plastic directly in the cylinder 3, either already in the screw flights 5 ', but at the latest in the screw antechamber 6, takes place.
  • the plastics material component shown in FIG. 2 a has a first component half 32 and a second component half 33, which are connected via a film hinge 31.
  • Film hinge 31 is in cross section in the figure 2b
  • the thickness of the film hinge 31 is here for example about 0.65 mm, whereby this has sufficient flexibility and at the same time is not so brittle despite fiber reinforcement that it breaks when actuated.
  • the component halves 32 and 33 are sufficiently rigid.
  • the two component mold halves 22 and 23 are relative
  • the injection molding of the component is realized either by means of a rod casting system or a needle valve hot runner system.
  • Reason for this measure is that the gas pressure or the
  • Melt pressure in the sprue system should not expand early or should not outgas during the production process.
  • the dimensioning of the injection point and the sprue system should be adapted to the component volume. This also applies to the number of injection points.
  • the diameter of the sprue bar is preferably in any area more than twice the wall thickness, as it may otherwise lead to inflation of the sprue bar, which in turn
  • a key aspect in optimizing injection is short flow paths and a constant melt flow during the filling process to allow consistent, consistent filling of the hinge geometry. This is the location of the injection points
  • PA 6 GF 15 and PA 6 GF 30 have proved to be suitable by way of example.
  • PA 6 GF 30 have proved to be suitable by way of example.
  • the filling process should be kept as short as possible. This requirement requires a high to very high injection speed.
  • the filling time is preferably not more than 0.8 s and the screw speed is preferably about 110 mm / s.
  • the specific spray pressure then rises to about 1400 in cash.
  • the tool temperature in the affected area should not be below 40 ° C.
  • the cooling time is crucial for the subsequent component quality and should be adapted to the geometry to be generated and tuned. It is important that there is no wave formation and no outgassing or puffing. For most components with film hinge geometries, this phase is not defined by the film hinge but by the rest of the component. In some cases, the full functionality of the film hinge geometry unfolds

Landscapes

  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

L'invention concerne un procédé de fabrication d'un élément en matière plastique renforcée par des fibres (30) avec des charnières intégrales (31), le procédé comportant les étapes de : fusion d'une matière plastique mélangée à des fibres dans un outil de moulage par injection (1) ; expansion de la matière plastique au moyen d'un outil d'expansion ; injection de la masse plastique expansée dans un moule (20) qui comporte une partie destinée à la formation d'une charnière intégrale (31) ; solidification et prélèvement de l'élément en matière plastique (30) hors du moule (20). L'invention concerne également un élément (30) comportant une charnière intégrale (31) en matière plastique expansée et renforcée par des fibres. L'invention concerne en outre une charnière intégrale (31) composée d'une matière plastique expansée et renforcée par des fibres.
PCT/EP2014/072124 2013-12-11 2014-10-15 Charnières intégrales en matières plastiques renforcées par des fibres et procédé de fabrication Ceased WO2015086199A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
MYPI2016000900A MY196091A (en) 2013-12-11 2014-10-15 Film Hinges Made Of Fiber-Reinforced Plastics

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013020494.1A DE102013020494B4 (de) 2013-12-11 2013-12-11 Filmscharniere aus faserverstärkten Kunststoffen
DE102013020494.1 2013-12-11

Publications (1)

Publication Number Publication Date
WO2015086199A1 true WO2015086199A1 (fr) 2015-06-18

Family

ID=51726510

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2014/072124 Ceased WO2015086199A1 (fr) 2013-12-11 2014-10-15 Charnières intégrales en matières plastiques renforcées par des fibres et procédé de fabrication

Country Status (3)

Country Link
DE (1) DE102013020494B4 (fr)
MY (1) MY196091A (fr)
WO (1) WO2015086199A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019131513A1 (de) * 2019-11-21 2021-05-27 Ford Global Technologies, Llc Herstellung eines thermoplastischen Spritzgießwerkstoffgranulats und eines Spritzgussbauteils sowie Granulatkorn

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020105907A1 (de) 2020-03-05 2021-09-09 HELLA GmbH & Co. KGaA Verfahren zur Herstellung eines einteiligen Kunststoffprodukts und Kunststoffspritzgussvorrichtung
DE102022131762A1 (de) 2022-11-30 2024-06-06 HELLA GmbH & Co. KGaA Verfahren zur Herstellung eines Bauteils mit Filmscharnier und Bauteil mit Filmscharnier

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995021056A1 (fr) * 1994-02-07 1995-08-10 E. Khashoggi Industries Charnieres pour des materiaux composites contenant une fraction elevee de charge minerale
WO2000039215A1 (fr) * 1998-12-29 2000-07-06 Vertis B.V. Procede de fabrication de produits revetus
DE10250765A1 (de) 2002-10-30 2004-05-19 Wfs Werkzeug- Und Formenbau Schmidt Gmbh & Co.Kg Verfahren zum Herstellen einer angelenkten Klappe beim Spritzgiessen, Pressen o. dgl. eines Formteils und Formteil mit einer angelenkten Klappe
DE10308246A1 (de) 2003-02-25 2004-09-09 Zf Boge Elastmetall Gmbh In Spritzgußtechnik hergestellte Lagerschale
US20050244773A1 (en) 2004-04-30 2005-11-03 Norbert Abels Self-ligating orthodontic brackets comprising a filled and fiber-reinforced polymeric material
DE102009056111A1 (de) 2009-11-30 2011-06-01 Klaus Heinzmann Transportvorrichtung

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995021056A1 (fr) * 1994-02-07 1995-08-10 E. Khashoggi Industries Charnieres pour des materiaux composites contenant une fraction elevee de charge minerale
WO2000039215A1 (fr) * 1998-12-29 2000-07-06 Vertis B.V. Procede de fabrication de produits revetus
DE10250765A1 (de) 2002-10-30 2004-05-19 Wfs Werkzeug- Und Formenbau Schmidt Gmbh & Co.Kg Verfahren zum Herstellen einer angelenkten Klappe beim Spritzgiessen, Pressen o. dgl. eines Formteils und Formteil mit einer angelenkten Klappe
DE10308246A1 (de) 2003-02-25 2004-09-09 Zf Boge Elastmetall Gmbh In Spritzgußtechnik hergestellte Lagerschale
US20050244773A1 (en) 2004-04-30 2005-11-03 Norbert Abels Self-ligating orthodontic brackets comprising a filled and fiber-reinforced polymeric material
DE102009056111A1 (de) 2009-11-30 2011-06-01 Klaus Heinzmann Transportvorrichtung

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019131513A1 (de) * 2019-11-21 2021-05-27 Ford Global Technologies, Llc Herstellung eines thermoplastischen Spritzgießwerkstoffgranulats und eines Spritzgussbauteils sowie Granulatkorn
DE102019131513B4 (de) 2019-11-21 2022-02-24 Ford Global Technologies, Llc Herstellen eines thermoplastischen Spritzgießwerkstoffgranulats und eines Spritzgussbauteils
US11759978B2 (en) 2019-11-21 2023-09-19 Ford Global Technologies, Llc Production of a thermoplastic injection-molding-material granulate and of an injection-molded component, and a granulate grain

Also Published As

Publication number Publication date
MY196091A (en) 2023-03-14
DE102013020494B4 (de) 2016-08-18
DE102013020494A1 (de) 2015-06-11

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