WO2013050026A1 - Procédé et dispositif de fabrication de pièces moulées en plastique - Google Patents

Procédé et dispositif de fabrication de pièces moulées en plastique Download PDF

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Publication number
WO2013050026A1
WO2013050026A1 PCT/DE2012/100282 DE2012100282W WO2013050026A1 WO 2013050026 A1 WO2013050026 A1 WO 2013050026A1 DE 2012100282 W DE2012100282 W DE 2012100282W WO 2013050026 A1 WO2013050026 A1 WO 2013050026A1
Authority
WO
WIPO (PCT)
Prior art keywords
semifinished product
pressing tool
plastic
pressing
semi
Prior art date
Application number
PCT/DE2012/100282
Other languages
German (de)
English (en)
Inventor
Michael Klemt
Original Assignee
Universität Stuttgart
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 Universität Stuttgart filed Critical Universität Stuttgart
Publication of WO2013050026A1 publication Critical patent/WO2013050026A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B13/00—Conditioning or physical treatment of the material to be shaped
    • B29B13/02—Conditioning or physical treatment of the material to be shaped by heating
    • B29B13/023—Half-products, e.g. films, plates
    • 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
    • B29C35/0272—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using lost heating elements, i.e. heating means incorporated and remaining in the formed article
    • 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
    • B29C35/12—Dielectric heating
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/34—Feeding the material to the mould or the compression means
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/52—Heating or cooling
    • 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
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14336—Coating a portion of the article, e.g. the edge of the article
    • 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
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14778—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the article consisting of a material with particular properties, e.g. porous, brittle
    • 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
    • B29C51/26—Component parts, details or accessories; Auxiliary operations
    • B29C51/261—Handling means, e.g. transfer means, feeding means
    • B29C51/262—Clamping means for the sheets, e.g. clamping frames
    • 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
    • B29C51/26—Component parts, details or accessories; Auxiliary operations
    • B29C51/42—Heating or cooling

Definitions

  • the invention relates to a method and an apparatus for producing a
  • Plastic molding from a flat semi-finished by means of a hot forming process in which the semi-finished transported by a gripper from a storage location in a pressing tool with a shape of the plastic molding forming pressing tool parts, fixed to the pressing tool and is brought under heating by a pressing operation of the pressing tool in the form, said Semi-finished product during its production as a polymer material provided with electrically conductive additives and is controlled to a predetermined temperature before the pressing process by resistance heating of the electrically conductive additives.
  • plastic moldings which are made of flat, planar semi-finished products, so-called organo sheets.
  • the shaping takes place in, for example, divisible in two halves pressing tools with complementary inner surfaces, in which the semi-finished inserted and brought under plastic deformation in the desired shape.
  • the semi-finished product is heated in a heat chamber, for example by means of radiant heat such as infrared radiation or recirculation heating, contact heating or the like to a temperature at which a plastic hot forming is possible, for example, heated over glass temperature and inserted by a gripper in the pressing tool.
  • a process for the production of carbon fiber composite materials is further known, in which the semi-finished product is heated to a predetermined temperature by means of an electrical resistance heater after being placed in the tool mold and then pressed by means of the mold The heating process of the semifinished product takes place in the Form, so that the heating process requires correspondingly long cycle times in production.
  • the object of the invention is therefore to propose a method and a device in which made of semi-finished plastic moldings can be produced energy-saving, fast and with low production space requirements.
  • the object is achieved by a method for producing a plastic molded part from a flat semi-finished by means of a hot forming process, wherein the semi-finished transported by a gripper from a storage location in a pressing tool with a shape of the plastic molding forming pressing tool parts, fixed to the pressing tool and under heating by a pressing operation the semifinished product during manufacture as a polymer material with electrically conductive additives, for example, to form a fiber composite material, provided and before the pressing process during transport from the storage location to the pressing tool by resistance heating of the electrically conductive additives to a predetermined temperature is regulated.
  • the object is achieved by a device for carrying out the method, which has a power generating device waiving a heat chamber for resistance heating of the semifinished product.
  • the integrated in the semi-finished electrical Conductive additives form the heat source through their internal resistance. It has proven to be advantageous if these additives mechanically reinforce the plastic material used, for example a thermoplastic. For example, carbon particles such as carbon fibers can be used for this purpose. Fiber composite materials, for example so-called continuous carbon fiber reinforced thermoplastic semi-finished products (CFRP) have proved to be particularly advantageous. Alternatively, intrinsically electrically conductive polymers such as polyimides can be provided, in particular for lower mechanical stress. In addition, the plastic molded parts can be formed as single-layered or as sandwich components with at least one layer with electrically conductive additives.
  • CFRP continuous carbon fiber reinforced thermoplastic semi-finished products
  • the semi-finished products are designed to be resilient with correspondingly high currents and voltages of the power supply device.
  • the resistance heating essentially selectively and exclusively heats the semifinished product to the required forming temperature, so that energy-efficient heating is achieved. Due to the low heat radiation of the semi-finished products, this remains low until the pressing process.
  • Hot forging process is to be understood as meaning a process in which the semifinished products, after or with appropriate heating, are capable of being given a predetermined temperature, plastic deformation, for example at or above the glass transition temperature, softening temperature and the like of the single-layer semifinished product or of all layers a multi-layer semifinished product in a multi-part, preferably two-part pressing tool can be brought from the sheet shape into a three-dimensional shape.
  • the pressing tool parts which are moved toward one another and are provided with complementary surface portions, in the closed state form the limiting volume for the plastic molded part to be molded.
  • the triggered plastic molded part can be brought into final form by finishing, for example, removal of excess edges, surface treatment and the like.
  • the pressing tool is advantageously formed with a lower electrical conductivity so with a higher electrical resistance than the semifinished product, so that no further measures of electrical insulation of the pressing tool must be made against the semifinished product.
  • the surfaces of the press tool parts for example, greased, be be coated or otherwise treated, so that the selection of the material of the pressing tool can be adapted to the specifications of the pressing process substantially independent of its electrical conductivity.
  • Under gripper is a device to be understood, which per pressing tool cyclically a substantially planar part of the semifinished product on the storage device, for example, a vertical or horizontal stratification of semi-finished parts, a feed belt and or the like receives and in a preferred manner, the molded plastic part again in a storage device or a conveyor belt or the like stores.
  • the semifinished product in the form of prefabricated flat sheets may be accommodated in frames, for example made of ceramic or other temperature-resistant materials above the softening point of the semifinished product, which have corresponding fixing points at which the semifinished product is positioned at counter points such as pins in the pressing tool.
  • the semifinished product itself can have corresponding fixing points such as openings.
  • the power generating device can be provided as a transformer with a current, voltage or power regulating device which preferably provides electrical energy as high current and low voltage.
  • a relationship between the electrical energy to be expended and the temperature of the semifinished product can be determined and the supply of electrical energy can be controlled accordingly.
  • the power supply device can be arranged stationary, wherein the energy can be supplied to the semifinished product during transport in the gripper and optionally after its insertion into the pressing tool.
  • the power supply device or at least its the electrical energy in the semifinished product electrodes may be provided on the gripper or the said frame, so that the electrical energy already initiated when receiving the semifinished product by the gripper and thereby the clock rate can be increased.
  • the gripper can remain on the pressing tool during the pressing process and at least temporarily maintain the resistance heating during the pressing process.
  • the semifinished product can already be elastically deformed by the pressing tool before reaching a plastic state, so that the cycle rates can be additionally reduced.
  • the closing of the pressing tool can be effected as a function of the variables applied to the power supply device such as voltage, power, current or a temperature determined by means of these variables or a resistance of the semi-finished product determined in another way.
  • the temperature of the semifinished product can be predefinably distributed in an improved manner over the entire semifinished product by providing more than two contact electrodes which feed the electrical energy.
  • the contact electrodes can be distributed over the circumference of the semifinished product, so that essentially the same temperatures can be controlled in particular during the pressing process over the surface of the semifinished product or the forming plastic molded part.
  • the contact electrodes can be arranged laterally and / or on the front side of the semifinished product and be biased for example by means of pressure sensors with respect to this.
  • the current transmission from the contact electrodes to the semifinished product can be controlled inter alia by their area and their contact pressure.
  • the contact electrodes can be pressurized accordingly by the pressure transmitters.
  • the resistance measurements in particular via a plurality of contact electrodes for quality assurance, for example, the mechanical strength of the plastic molded part can be used.
  • the distribution of a gain of the semifinished product and / or the plastic molding providing, electrically conductive distribution, which on the plastic molding acting temperature and other parameters relevant to quality from the reception of the semifinished product to the storage of the finished plastic molded part are determined, evaluated and archived, so that at any time and for each individual a quality assessment can be provided.
  • the method is also suitable for plastic components to be additionally attached to the plastic molded part, which, for example, is molded onto the semifinished product or the finished, preferably still energized, plastic molded part by means of an injection molding tool during a stay of the semifinished product.
  • plastic moldings can be provided as composite parts of different materials.
  • a further, reinforced or unreinforced thermoplastic or in a correspondingly modified injection molding a thermoset can be molded.
  • By means of the resistance heating it is possible, if appropriate, to provide selectively at the location of the plastic components to be sprayed, temperatures of the semifinished product or of the plastic molded part which are changed as a function of the remainder.
  • FIG. 2 shows the device of FIG. 1 during the pressing and injection process
  • FIG. 3 shows the device of FIGS. 1 and 2 after the pressing and injection process
  • FIG. 4 is a sectional view of a power supply device modified relative to the power supply device of FIGS. 1 to 3;
  • Figure 5 is a systematically illustrated gripper with integrated power supply device.
  • the device 1 shown in Figure 1 is used to carry out the method for
  • the sectional pressing tool 3 is formed from several - here two - pressing tool parts 4, 5, the surfaces 6, 7 are formed to each other three-dimensionally and complementary to each other while maintaining a mold volume.
  • the semifinished product 2 is heated by displacement of the pressing tool parts
  • thermoplastic polymer consists of one or more layers of one or more types of thermoplastic polymer, wherein at least one layer contains electrically conductive additives such as fibers, such as carbon fibers or particles, which also as a mechanical reinforcement of the semifinished product 2 and the plastic molded part produced below is used.
  • the semifinished product 2 is heated by means of a supply of electrical energy by means of the power supply device 8 with the current source 9 and the contact electrodes 10, 1 1, wherein the internal resistance of the electrically conductive additives ohmic heat develops.
  • the supply of electrical energy is controlled by means of the control device of the size and time after so that the semifinished product 2 uniformly heated to a predetermined temperature, for example in the range of glass or softening temperature and the semi-finished 2 hot formed in the pressing tool 3 becomes.
  • the semifinished product 2 can be selectively heated by the position and number of at least two contact electrodes 10, 1 1 is selected accordingly.
  • a contact resistance can be set or optimized.
  • the frame 15 takes on the semifinished product 2 and allows by means not shown Aufsteckpins a positioned arrangement on the pressing tool 3 - here on the pressing tool part 5.
  • the frame is made of electrically insulating material, for example made of ceramic or provided by an insulating conductive layer. Additional wise at least the surfaces 6, 7 compared to the conductivity of the semifinished product 2, a lower conductivity in order to reduce leakage currents through the pressing tool 3 or prevent. For this purpose, the surfaces 6, 7 by appropriate treatment such as coating, passivation and the like have a low electrical conductivity and / or the material of the pressing tool 3 have reduced conductive properties.
  • the semifinished product 2 can be heated before being introduced.
  • the contact electrodes can be provided with the frame mobile, so that semi-finished 2 and frame 15 together with contact electrodes 10, 1 1 can be moved from the storage location in the pressing tool 3.
  • the pressing tool 3 shown to inject a further plastic component onto the semifinished product 2 by means of the injection molding unit 16, which is only partially shown.
  • the liquefied plastic component 17 is held in the injection molding unit 16 and filled after appropriate conditioning of the semifinished product 2 on the surface 6, the injection mold 18 and made a plastic connection with the semifinished product 2.
  • Figure 2 shows the device 1 during the pressing process with already formed form of the semifinished product 2 and molded plastic component 17. It has been found to be advantageous to maintain the temperature of the semifinished product 2 at least partially up to a better connection of plastic component 17 and semi-finished 2 to achieve.
  • Figure 3 shows the device 1 with open after the pressing and injection process
  • FIG. 4 shows a section through a clock against the con tacts 10, 1 1 of Figure 1 modified contact electrode 10a with two laterally and opposite semi-finished only 2 contacting electrodes 20, 21 and the semifinished product 2 frontally contacting electrode 22nd In the illustration shown, the electrodes 20, 21, 22 are shown not contacting at a distance from the semifinished product 2.
  • the electrodes 20, 21, 22 displaceably received in the frame 15a can be biased against the semifinished product 2 with a predetermined biasing force.
  • Each electrode 20, 21, 22 has its own power connection 23, 24, 25, so that they can be controlled separately, wherein different current paths in conjunction with further contact electrodes, which are arranged at a distance from the contact electrode 10 a on the semifinished product 2, can be provided , which allow a uniform or predetermined surface areas selectively variable heating of the semifinished product 2.
  • Figure 5 systematically shows the gripper 26, which the frame 15b with the
  • Semifinished product 2 at the storage location 27 receives and inserts into the pressing tool, not shown.
  • the frame 15b contains the contact electrodes 10b, 11b.
  • the supply lines 28, 29 supply them with electrical energy, so that the semifinished product 2 can already be preheated during transport to the pressing tool.
  • the power source is housed in a manner not shown in the gripper or stationary in a supply unit.

Abstract

L'invention concerne un procédé et un dispositif (1) de fabrication d'une pièce moulée en plastique à partir d'un demi-produit plan (2) au moyen d'un procédé de formage à chaud. Selon ce procédé, le demi-produit (2) est transporté au moyen d'une griffe depuis un point d'approvisionnement dans un outil de moulage par compression (3) qui comprend des pièces (4, 5) donnant une forme à la pièce moulée en plastique, il est ensuite fixé à l'outil de moulage par compression (3) et mis en forme par un processus de compression de l'outil de moulage par compression (3) sous chauffage, lequel demi-produit (2) se présente sous forme de matière première polymère avec des additifs électroconducteurs lors de la fabrication et est régulé à une température pouvant être prédéfinie avant le processus de compression par chauffage par résistance desdits additifs électroconducteurs. Afin de raccourcir le temps de production et d'obtenir un chauffage continu du demi-produit (2), le demi-produit est chauffé au cours de son transport dans la griffe (26).
PCT/DE2012/100282 2011-10-07 2012-09-14 Procédé et dispositif de fabrication de pièces moulées en plastique WO2013050026A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011054287.6A DE102011054287B4 (de) 2011-10-07 2011-10-07 Verfahren und Vorrichtung zur Herstellung von Kunststoffformteilen
DE102011054287.6 2011-10-07

Publications (1)

Publication Number Publication Date
WO2013050026A1 true WO2013050026A1 (fr) 2013-04-11

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PCT/DE2012/100282 WO2013050026A1 (fr) 2011-10-07 2012-09-14 Procédé et dispositif de fabrication de pièces moulées en plastique

Country Status (2)

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DE (1) DE102011054287B4 (fr)
WO (1) WO2013050026A1 (fr)

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CN104760269A (zh) * 2015-03-28 2015-07-08 合肥汇通控股股份有限公司 塑胶铭牌热弯曲成型工艺
WO2021074004A1 (fr) 2019-10-15 2021-04-22 Covestro Intellectual Property Gmbh & Co. Kg Procédé de production d'un élément composite doté d'une surface sans défaut

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DE102012019915B4 (de) * 2012-10-11 2016-02-25 Premium Aerotec Gmbh Verfahren zum Bereitstellen eines Faservorformlings zur Herstellung eines Faserverbundbauteils, sowie Transporteinrichtung für einen Fasermaterialzuschnitt
DE102012111087B3 (de) 2012-11-19 2013-10-24 Universität Stuttgart Verfahren und Vorrichtung zur Herstellung von geformten Organoblechen
DE102013107102B4 (de) * 2013-07-05 2017-06-29 Deutsches Zentrum für Luft- und Raumfahrt e.V. Faserhalbzeug-Temperiervorrichtung
DE102013107105B4 (de) * 2013-07-05 2020-07-02 Deutsches Zentrum für Luft- und Raumfahrt e.V. Faservorformling-Temperiervorrichtung
JP6107569B2 (ja) 2013-09-25 2017-04-05 トヨタ紡織株式会社 樹脂成形体の製造方法
DE102014014743A1 (de) * 2014-10-09 2016-04-14 Premium Aerotec Gmbh Formschale für ein Werkzeug zur Herstellung eines Faserverbundbauteils sowie Verwendung einer derartigen Formschale
DE102014118747A1 (de) * 2014-12-16 2016-06-16 Universität Stuttgart Verfahren und Vorrichtung zur Verbindung von Faserwerkstoffen mit Metallwerkstoffen
DE102014018801B4 (de) * 2014-12-19 2019-06-19 Airbus Defence and Space GmbH Verfahren und Vorrichtung zur Herstellung eines Faservorformlings
DE102015005974A1 (de) 2015-05-08 2016-11-10 Audi Ag Verfahren und Werkzeug zur Herstellung eines flächigen Faserkunststoffverbund-Bauteils unter Verwendung einer Hybridgarntextilie
DE102015012537B3 (de) * 2015-09-24 2017-03-23 Audi Ag Verfahren zum Herstellen endlosfaserverstärkter Kunststoffe und eine entsprechende Vorrichtung
DE102016120703A1 (de) 2016-10-28 2018-05-03 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren und Vorrichtung zur Herstellung von dreidimensionalen Formteilen aus einem faserverstärkten Thermoplastband
DE102018216207A1 (de) * 2018-09-24 2020-03-26 Bayerische Motoren Werke Aktiengesellschaft Verfahren sowie Heizvorrichtung zum Aufheizen eines Stabs
CN113547683B (zh) * 2021-07-29 2023-03-24 广州聚仕达橡胶机械技术有限公司 一种橡胶自动热压成型生产设备及方法

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GB1278642A (en) * 1969-06-04 1972-06-21 Fibreglass Ltd Improvements in and relating to the manufacture of bonded fibrous bodies
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DE102009016215A1 (de) 2009-04-03 2010-10-14 Volkswagen Ag Verfahren zur Herstellung eines Bauteils sowie zur Herstellung des Bauteils verwendbare Spanneinrichtung, Klapprahmen sowie Presswerkzeug

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CN104760269A (zh) * 2015-03-28 2015-07-08 合肥汇通控股股份有限公司 塑胶铭牌热弯曲成型工艺
WO2021074004A1 (fr) 2019-10-15 2021-04-22 Covestro Intellectual Property Gmbh & Co. Kg Procédé de production d'un élément composite doté d'une surface sans défaut

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