WO1997021766A1 - Material aus kunststoff-beads - Google Patents
Material aus kunststoff-beads Download PDFInfo
- Publication number
- WO1997021766A1 WO1997021766A1 PCT/EP1996/005483 EP9605483W WO9721766A1 WO 1997021766 A1 WO1997021766 A1 WO 1997021766A1 EP 9605483 W EP9605483 W EP 9605483W WO 9721766 A1 WO9721766 A1 WO 9721766A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- plastic material
- material according
- beads
- layer
- mold
- Prior art date
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
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
- B29C44/14—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements the preformed part being a lining
-
- 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
- B29C44/44—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length in solid form
- B29C44/445—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length in solid form in the form of expandable granules, particles or beads
-
- 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
- B29C44/3415—Heating or cooling
- B29C44/3426—Heating by introducing steam in the mould
Definitions
- the invention relates to a material consisting entirely or partially of plastic beads, in particular consisting of several layers.
- Multi-layer materials are known for construction purposes. Plastic foam layers of different types are bonded together.
- the connection can be a mere adhesive connection, but also a welded connection.
- it is known to mechanically anchor the individual layers to one another.
- the invention is based on the fact that the flexibility of the surface can be of equal importance.
- the invention is also based on the object of simplifying the production of plastic material and improving the material.
- this is calibrated with the aid of a layer which consists entirely or partially of beads.
- Beads are plastic foam beads / partial that can be processed into any shape. Such beads / partial can be created in different ways.
- a blowing agent is added to the initial particles under pressure, heat and movement of the bath.
- the warm plastic particles loaded with propellant are discharged from the autoclave at high speed.
- the particles foam under the internal pressure that takes effect. This is how beads are made.
- the extruder consists of one or more screws that rotate in a housing. Extruders with one screw are single-screw extruders. Extruders with two screws are referred to as twin-screw extruders. In addition, planetary roller expanders are known as multi-screw extruders. The various screws of a multi-screw extruder mesh either directly or indirectly via other screws
- Preferred plastics in the known sheet production are polyethylene and polystyrene.
- the plastic is added to the extruder in granular form with additives.
- the additives are fillers, nucleating agents (nucleating agents) and other a blowing agent is also added.
- the blowing agent used to be CFCs which made foaming possible without problems, but is not used because of its environmental impact.
- CFC blowing agents HCFC blowing agents have been developed and used
- Such blowing agents are known per se, for example carbon dioxide (CO2), propane, butane, pentane and others.
- CO2 carbon dioxide
- propane butane
- pentane pentane and others.
- the blowing agent can be applied in solid form with the plastic granulate.
- the blowing agent can be added to the extruder in liquid or gaseous form on the processing line / extrusion line
- the material goes through various processing phases in the extruder. Plasticization phase, homogenization phase and dispersion phase, cooling phase. The names of the individual phases describe the processes in the extruder.
- the melt is opened up in front of the extruder die / extruder nozzle Extrusion temperature / exit temperature cooled
- the emerging melt is foamed up in fine cells by the blowing agent distributed in the melt
- the nozzle In the known extrusion of plastic foam sheets described above, the nozzle usually has the shape of an elongated slot. The dimensions result from the degree of foaming / factor of the melt
- thin plastic foam strands are first produced using a perforated nozzle as an extrusion tool.
- the perforated nozzle has a large number of fine through-holes arranged next to one another
- the thin plastic foam strands which are formed are cut to short distances immediately after they emerge from the extruder nozzle. Particles / beads are obtained when cut, which have the shape of small cylinders with a round hole cross section.
- the beads can also have the shape of spheres or lenses
- the invention addresses the use of extruded beads to, although the CFC difficulties has the conflict and the current production of the beads in an autoclave in a different direction surprisingly turns out that the extruded beads have a soft hand, "that is on the surface relative are compliant This is attributed to the fact that the extruded beads are at least stretched during processing and become particularly flexible due to a loss of internal pressure.This is particularly advantageous for the transport of very surface-sensitive goods Liters (ltr), in extreme cases even down to 5 g per ltr.This applies at least to beads made of polypropylene or an ethylene-propylene block copolymer. With the low density, the flexibility of the plastic foam is particularly great the compliant a sufficient strength can be achieved. The strength depends on the density of the beads and the strength of their connection
- propylene and polypropylene combine various advantageous properties with low cost prices for the raw material.
- PP is more heat-resistant and wear-resistant, including bending-resistant Properties have been known for a long time.
- PP has not necessarily been shortlisted by plastic foam manufacturers in the past. This is due to the fact that PP is very difficult to produce as foam.
- PP has a relatively small temperature window
- the ethylene-propylene block copolymer preferably used according to the invention has an ethylene content of 2 to 18% by weight.
- the copolymer can also have other constituents, for example butylene or stabilizers. The heat resistance can be increased with the stabilizers
- the resilience of the beads can also be influenced by shrinking.
- the beads are shrunk using heat treatment.
- the steam is preferably used for shrinking.
- the steam can be water vapor or other steam / gas.
- the decisive factor here is the change in the state of matter from liquid to gaseous
- beads made of ethylene-propylene block copolymer or a comparable plastic react very strongly.This applies to both shrinking and regression.This is attributed to the fact that the vapors in the phase described above easily diffuse into the beads Cooling then leads to a renewed change of state using the example of steam.
- the steam condenses to water. This creates a considerable negative pressure in the beads.
- the beads fold in under the ambient pressure of the air.
- the beads become shrinking beads. Their surface is extremely soft
- the beads are also re-formed in the steam, specifically with steam that arises from a change in the state of matter.
- the steam in turn quickly gets into the beads and leads to expansion there -.
- “_” PCT / EP96 / 05483 O 97/21766
- the beads shrink or regress at a steam temperature of 95 to 100 degrees Celsius.
- the beads are connected to one another in a molding machine.
- the connection is made by heating and melting the surface of the beads using steam.
- the steam penetrates the beads so that the beads heat up and expand.
- the plasticized surfaces are pressed together and, depending on the pressure and temperature, welded or sintered together or only glued.
- a stronger melting of the surface is required for welding than for sintering.
- the required welding pressure is much lower than the required sintering pressure. Both connections can develop sufficient strength.
- the beads By connecting the beads at the points of contact, the beads hold, i.e. the beads mutually stabilize in the form in which they were at the time of the invention.
- the above superheated steam technology is based on the superheated steam technology known from the processing of polystyrene beads. Hot steam with the appropriate pressure is pressed through the molding machine until the desired heating has occurred.
- the pressure required for the ethylene-propylene block copolymer beads according to the invention is 4 to 8 bar, preferably 6 bar and a temperature of 140 to 170 degrees Celsius, preferably 160 degrees Celsius.
- the superheated steam technology provides that the beads are already filled with appropriate pressure in the molding machine, and until the cavity of the molding machine is completely filled. Otherwise, the steam searches for the path of least resistance through the remaining cavity past the beads.
- the beads may also require the beads to be re-foamed.
- the beads When re-foaming, the beads are again brought to a volume size in a pre-treatment station (container) with superheated steam, which is below Maintaining the above-mentioned pressure limits with the desired density results in a complete filling of the mold cavity in the molding machine.
- the beads can be loaded with blowing agent.
- the blowing agent is air, which penetrates the beads under pressure.
- the pressure loading requires a pressure vessel. After the pressure loading, the beads are filled into the container while maintaining the pressure and steamed with superheated steam.
- the superheated steam heats the beads to the post-foaming temperature and at the same time heats up the enclosed blowing agent.
- the blowing agent thereby comes under increased pressure.
- venting the container ie reducing the pressure in the container, the total pressure of the enclosed blowing gas becomes effective. After-foaming arises
- Another method provides for the use of microwaves for welding the beads. That is, the necessary heating of the beads is generated with the aid of microwaves. It must be taken into account that, for example, the PP beads (polypropylene beads) described above have insufficient dielectric properties than that they react to microwaves worth mentioning. This plastic material is said to be inactive. In order to nevertheless bring about the heating on the surface, the beads according to the invention are coated or wetted with an active material (which reacts to microwaves). Water, which is available everywhere and is easily accessible, is best for surface-relaxed water. The desired relaxation can be achieved with surfactants and, for example, household detergents. The beads are wetted in a water bath or by showering with water. In the closed molding machine, the microwaves heat and evaporate the water until the desired temperature and pressure are reached.
- the amount of water required is preferably determined on the basis of the amount of steam. If the steam quantity is too low, neither the necessary pressure nor the necessary temperature will be reached. This can be checked on the basis of the welding result. If the heating is too weak, more water is added. If the temperature is too high, the water is reduced.
- the optimal amount of water for each material * can be determined.
- the amount of water will be 1 to 4% by volume of the bead volume. It is favorable if the necessary amount of water is not in the form of a water sump in the mold, but is distributed overall on the surface of the beads. This can be done by thickening the
- a thicker layer of water can be formed on the beads with thickened water
- the desired thickening can be achieved with diatomaceous earth, for example, as well
- Methyl cellulose or absorbents with which a kind of water paste can be produced are Methyl cellulose or absorbents with which a kind of water paste can be produced.
- glycerol or polyols and glycols can also be used as active materials. These are polar (dielectric) materials
- a non-active or only a slightly active mold material is preferably used for microwave technology.
- Suitable materials for the mold are, for example:
- Phenolic resins A polymer concrete can also be suitable
- Heating layer on the inner wall of the mold can be beneficial
- the heating layer can be an active one
- Material can be with the heating layer a temperature drop on the outer wall of the
- the heating layer can also be used to increase the temperature.
- the desired temperature on the inside wall of the mold is also achieved by providing an active molding material with cooling arranged on the inside wall
- the cooling can be air cooling
- a complete filling of the mold cavity can advantageously be dispensed with when using microwaves.
- standard beads of an order of magnitude with which all the desired density can be represented for one or more shaped bodies can be used. Then, depending on the desired density of a shaped body, more becomes or fewer (for example, water-wetted) beads filled into the mold cavity without completely filling the mold cavity. After heating, the beads first foam up until the mold cavity is filled. The desired increase in pressure and temperature then occurs
- the welding process can be controlled on the basis of the pressure in the mold.
- a pressure valve is optionally used which is actuated when a certain pressure is reached and sets a timer in motion which switches off the microwaves after a predetermined period of time
- the above-mentioned re-foaming does not apply to this technique.
- the shrunken beads are particularly advantageous.
- the shrunken beads show an idiosyncratic behavior. In the steam they expand almost instantly to their original volume (before shrinking) at a certain temperature.
- the extruded beads preferably have a diameter of 0.5 to 15 mm.
- the diameter of the beads can be different or the same for certain shaped bodies.
- the bulk density of the beads can be different or the same.
- it can be easier to adapt the density of the beads to the desired molded density while maintaining other framework conditions.
- the production of the beads by means of extrusion has the advantage that the extruder enables the density to be changed relatively easily
- the lower limit for the thickness of a molded web is the thickness of the beads. That means that with a bead diameter of 6 mm, the thickness of a bead can be made from these beads Molded web should not be less than 6 mm (for reasons of simplification, the pressure and the associated volume influence on the beads have not been taken into account)
- Web thickness is not an integral multiple of the bead thickness
- the smaller beads are also advantageous for a multi-layer molded body.
- the beads with the small diameter are preferably used for the thinner layers. It is advantageous to design the thinner, outer layers as strength layers. For these layers, a higher density is chosen compared to the other layers
- 0.5 to 5 mm layer thickness can be used for the strength layer and thicknesses up to 300 mm, preferably 100 mm, for the other layers.
- the beads generally have a smaller volume in the strength layer than in a compliance layer. There are bead diameters up to 15 mm
- the last outer layer e.g. for packaging material
- the bead layer can be combined with a further bead layer as a strength layer, but also with a one-piece extruded or manufactured plastic foam layer, as well as with a non-foamed strength layer made of plastic.
- extruded beads also allows significantly heavier qualities to be produced.
- Low-density foam with a density of e.g. 2OO (in extreme cases up to 5OO) kg per cubic meter
- Another advantage of using extruded beads is the possibility of small batches. With the known autoclave systems, only large batches can be produced economically. This requires a relatively large inventory and excludes the offer of specialties with low demand
- Another variant of the processing of the beads provides that the beads are only compressed without a substantial loading with propellant and filled into the mold under pressure.
- the reduction in volume can be, for example, 50% compared to the initial volume. In this method, the reduction in volume serves to the beads into the mold provided for the production of the molded part, ie to adapt it to the volume of the mold cavity. As explained above, the beads are connected by welding, sintering or only by gluing
- the processing of the beads in the form according to the invention can take place in different ways.
- the one-layer production has already been explained above.
- the separate production of layer-forming shaped bodies from beads and their connection is one possibility.
- the connection can be made by gluing, even better by welding is suitable, for example a hot pusher.
- the welding is carried out by melting the contact surfaces. Heat radiators or hot air blowers can be used for melting.
- the layers can also be welded with microwaves.Welding with microwaves is an advantage if the layers to be joined are made of inactive plastic foam. Then the already finished layers are no longer changed by the microwaves With the help of an active wetting or coating material, such a material should be a dry material, for example soot or dusty coal. However, soot and dusty coal develop very strong effects, so that only small amounts are provided according to the invention. This can be ensured by dusting or even by subsequently reducing the layer thickness by blowing off and even brushing
- an external strength layer made of beads can be molded onto a flexible core layer. This is expediently carried out in a molding machine in which the existing layer is inserted and the beads are filled into the remaining mold cavity in the manner described above.
- the invention overcomes the difficulties that one of ordinary skill in the art would expect with steam management. As explained above, the Steam penetrate the bead layer, and in a short way, according to known molding machines, not only have access openings for the steam, but also opposite exhaust steam openings. The steam path is interrupted when a closed layer is inserted. The invention has recognized that a permanent and uniform penetration of the layer is nevertheless possible.
- the layer is provided with a perforation for this purpose.
- the perforation of the inserted layer can be achieved by needling.
- the openings created by the perforation are preferably of a diameter
- the opening width of the pores between the beads is coordinated.
- a sufficient passage volume is created overall by the number of needle pricks per unit area.
- the passage of steam provided according to the invention through the layer inserted in the mold causes the perforation to close again.
- the heating caused by the passage of steam is the cause. Melting, expansion and welding
- a welding portion is provided in the material of the layers to be joined together. This is a minimum proportion of the same material components for plastic.Some plastics can also be welded with plastics of different composition. The weldability can be easily tested Seeing white is usually sufficient
- Each layer can be provided on one side or on both sides with a different material. This can be done in the above-described form of forming a bead layer or by connecting separately manufactured layers
- the advantages of the invention become particularly clear in the case of molded parts for packaging purposes or for automobile construction.
- the strength layer can be reduced to a minimum in which it still meets the requirements.
- the layer thickness advantageously allows from 0.5 to 5 mm. It is advantageous if the strength layer itself consists of plastic foam. For most applications, plastic foam with a density of 10 to 49 kg per cubic meter is sufficient.
- the invention is equally applicable to strength layers made of non-foamed plastic or a plastic textile.
- the textiles suitable here include Both fabrics and nonwovens By using the same or weldable plastic and / or coarse structure or mesh, beads can connect directly to the textile.
- the layer in the mold eats deep-drawn.
- the starting material is a foam
- a flexible film or web can be placed in the molding machine and by means of beads and / or by means of the steam and / or by means of the steam side
- Shaping of the strength layer is optionally carried out by the compliance layer and vice versa.
- the layer thickness of the shaping layer is then preferably up to 100 mm
- the bead layer according to the invention is not bound to the fact that the neighboring layer is flat, but rather the bead layer can assume any shape
- Rollable impact sound insulation sheets with a thickness of up to 15 mm or impact sound insulation panels with a thickness of up to 50 mm can also be produced, whereby the impact sound improvement measure is 20 to 40 decibels
- the drawing shows a deep-drawing mold with an upper part 7 and a lower molded part 1.
- plastic foam 5 made of EPP with a thickness of 4 mm between the two molded parts 1 and 7, with a clamping at the edge.
- the plastic foam has a in the embodiment Volume weight of 20 kg per cubic meter.
- the cavity under the plastic foam 5 was pressurized with a line 2 while opening a valve 3. This was done by pumping out the air Space between the plastic foam 5 and the upper one Molded part released Both measures have the consequence that the plastic foam closes against the inner wall of the molded part 1
- the cavity which has become free through the deformation of the plastic foam 5 is then filled with beads.
- the beads are filled with compressed air of 6 bar through a line 8 after opening a valve 9.
- These are PP beads with a diameter of 3 mm
- 5 passage openings are provided in the plastic foam layer.
- the passage openings are created by needling.
- the needles have a diameter of 1 mm. 5 needles are provided per square centimeter
- the beads expand due to the heating. Due to the plasticized outer surfaces of the PP beads and due to the pressure, welding occurs at all points of contact between the beads and with the plastic foam 3
- the resulting plastic part serves as packaging for sensitive phono devices.
- automotive parts such as headlining, side panels, hat racks, sound and heat insulation, sun visors, dashboards and bumpers are manufactured.
- furniture or suitcases are manufactured.
- the parts intended for furniture are also included Provide a decorative layer
- the decorative layer is laminated / laminated
Landscapes
- Laminated Bodies (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP96943056A EP0865462B1 (de) | 1995-12-09 | 1996-12-07 | Verfahren zur herstellung eines materials aus kunststoff-beads |
AU11916/97A AU1191697A (en) | 1995-12-09 | 1996-12-07 | Material made from plastic beads |
DE59607281T DE59607281D1 (de) | 1995-12-09 | 1996-12-07 | Verfahren zur herstellung eines materials aus kunststoff-beads |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19545737.4 | 1995-12-09 | ||
DE19545737 | 1995-12-09 | ||
DE19609361 | 1996-03-11 | ||
DE19609361.9 | 1996-03-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997021766A1 true WO1997021766A1 (de) | 1997-06-19 |
Family
ID=26021055
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1996/005483 WO1997021766A1 (de) | 1995-12-09 | 1996-12-07 | Material aus kunststoff-beads |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0865462B1 (de) |
AU (1) | AU1191697A (de) |
DE (2) | DE19619892A1 (de) |
WO (1) | WO1997021766A1 (de) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999022923A1 (en) * | 1997-11-04 | 1999-05-14 | Buffalo Molded Plastics, Inc. | Molded polyolefin and polyphenyloxide products and method for production |
US6096256A (en) * | 1998-05-04 | 2000-08-01 | Buffalo Molded Plastics, Inc. | Method of making inserts for molded plastic parts |
DE10132494A1 (de) * | 2001-07-05 | 2003-02-06 | Dmt Gmbh Feinwerktechnische Ko | Verfahren zum Behandeln von in schüttfähiger Form vorliegenden Schaumstoffpartikeln und Vorrichtung zur Durchführung des Verfahrens |
WO2007059656A1 (fr) * | 2005-11-28 | 2007-05-31 | Tzongin Yeh | Procede pour la preparation d'un produit expanse avec de la peau et produit obtenu par ce procede |
WO2013000267A1 (zh) | 2011-06-27 | 2013-01-03 | 中国科学院上海药物研究所 | 唑类杂环化合物、其制备方法、药物组合物和用途 |
CN107268933A (zh) * | 2016-04-01 | 2017-10-20 | 进程配置公司 | 用于地板和辐射包层的加热元件的支撑件 |
CN111805827A (zh) * | 2019-04-12 | 2020-10-23 | 帕利特股份有限公司 | 用于制造面状地构成的构件的方法以及构件 |
US11659938B2 (en) | 2018-08-21 | 2023-05-30 | Dow Global Technologies, Llc | Coated open-cell polyurethane foam structures with thermal absorption capabilities |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29720702U1 (de) | 1997-11-24 | 1999-02-25 | Benecke Kaliko Ag | Mehrschichtiges plattenförmiges Auskleidungsmaterial |
DE19827362A1 (de) * | 1998-06-19 | 1999-12-23 | Reichenecker Hans Storopack | Aufgeschäumtes Formteil |
DE19939513B4 (de) * | 1999-08-20 | 2005-07-21 | Daimlerchrysler Ag | Mehrschichtverbundplatten mit Hohlkugelzwischenlage und Verfahren zur Herstellung von Mehrschichtverbundplatten |
DE10101429B4 (de) * | 2001-01-13 | 2006-02-02 | Wirtz, Markus M., Dr. | Leichtbauelement und Verfahren zur Herstellung desselben |
DE10129179B4 (de) * | 2001-06-19 | 2005-07-21 | Fagerdala Deutschland Gmbh | Verbundkörper, hergestellt nach einem LOM-Verfahren, und Verfahren zur Herstellung von LOM-Verbundkörpern |
US20040001945A1 (en) * | 2002-06-27 | 2004-01-01 | Cate Peter J. | Composite foam structure having an isotropic strength region and anisotropic strength region |
DE10253825A1 (de) * | 2002-11-18 | 2004-05-27 | Fagerdala Deutschland Gmbh | Verfahren zur Herstellung eines Werkstoffverbundes |
US20060165971A1 (en) * | 2003-03-11 | 2006-07-27 | Masatoshi Kuroda | Luneberg lens and process for producing the same |
GB2428626B (en) * | 2005-08-03 | 2010-12-22 | Sca Packaging Ltd | Moulding process |
US8769895B2 (en) | 2012-03-05 | 2014-07-08 | Victor Amend | Subfloor component and method of manufacturing same |
US20130227904A1 (en) * | 2012-03-05 | 2013-09-05 | Victor Amend | Subfloor component and method of manufacturing same |
EP3124192B1 (de) | 2015-07-27 | 2018-08-22 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verfahren zur herstellung eines spritzgiess- oder extrudierfähigen granulats |
DE102015116185B3 (de) * | 2015-07-27 | 2017-01-26 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verfahren zur Herstellung eines plattenförmigen Werkstoffes, eines spritzgieß- oder extrudierfähigen Granulats daraus und Granulat |
EP3486061A1 (de) * | 2017-11-20 | 2019-05-22 | FAURECIA Sièges d'Automobile | Verfahren zur herstellung eines sitzelements für ein kraftfahrzeug |
Citations (3)
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US3242238A (en) * | 1961-04-12 | 1966-03-22 | Edwin A Edberg | Method for making foamed polymeric structural materials |
US4783288A (en) * | 1986-04-08 | 1988-11-08 | Goehring Karl | Method for the production of shaped synthetic members |
EP0425886A2 (de) * | 1989-10-26 | 1991-05-08 | General Electric Company | Erweiterte thermoplastische Schaumstoffperlen mit sehr hoher Frequenzenergie |
-
1996
- 1996-05-18 DE DE19619892A patent/DE19619892A1/de not_active Ceased
- 1996-12-07 EP EP96943056A patent/EP0865462B1/de not_active Expired - Lifetime
- 1996-12-07 AU AU11916/97A patent/AU1191697A/en not_active Abandoned
- 1996-12-07 DE DE59607281T patent/DE59607281D1/de not_active Expired - Lifetime
- 1996-12-07 WO PCT/EP1996/005483 patent/WO1997021766A1/de active IP Right Grant
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3242238A (en) * | 1961-04-12 | 1966-03-22 | Edwin A Edberg | Method for making foamed polymeric structural materials |
US4783288A (en) * | 1986-04-08 | 1988-11-08 | Goehring Karl | Method for the production of shaped synthetic members |
EP0425886A2 (de) * | 1989-10-26 | 1991-05-08 | General Electric Company | Erweiterte thermoplastische Schaumstoffperlen mit sehr hoher Frequenzenergie |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999022923A1 (en) * | 1997-11-04 | 1999-05-14 | Buffalo Molded Plastics, Inc. | Molded polyolefin and polyphenyloxide products and method for production |
US6063460A (en) * | 1997-11-04 | 2000-05-16 | Buffalo Molded Plastics, Inc. | Molded polyolefin and polyphenyloxide products and method for production |
US6096256A (en) * | 1998-05-04 | 2000-08-01 | Buffalo Molded Plastics, Inc. | Method of making inserts for molded plastic parts |
DE10132494A1 (de) * | 2001-07-05 | 2003-02-06 | Dmt Gmbh Feinwerktechnische Ko | Verfahren zum Behandeln von in schüttfähiger Form vorliegenden Schaumstoffpartikeln und Vorrichtung zur Durchführung des Verfahrens |
WO2007059656A1 (fr) * | 2005-11-28 | 2007-05-31 | Tzongin Yeh | Procede pour la preparation d'un produit expanse avec de la peau et produit obtenu par ce procede |
WO2013000267A1 (zh) | 2011-06-27 | 2013-01-03 | 中国科学院上海药物研究所 | 唑类杂环化合物、其制备方法、药物组合物和用途 |
CN107268933A (zh) * | 2016-04-01 | 2017-10-20 | 进程配置公司 | 用于地板和辐射包层的加热元件的支撑件 |
CN107268933B (zh) * | 2016-04-01 | 2021-03-09 | 进程配置公司 | 用于地板和辐射包层的加热元件的支撑件 |
US11659938B2 (en) | 2018-08-21 | 2023-05-30 | Dow Global Technologies, Llc | Coated open-cell polyurethane foam structures with thermal absorption capabilities |
CN111805827A (zh) * | 2019-04-12 | 2020-10-23 | 帕利特股份有限公司 | 用于制造面状地构成的构件的方法以及构件 |
CN111805827B (zh) * | 2019-04-12 | 2024-03-12 | 百瑞德技术集团有限公司 | 用于制造面状地构成的构件的方法以及构件 |
Also Published As
Publication number | Publication date |
---|---|
EP0865462B1 (de) | 2001-07-11 |
DE19619892A1 (de) | 1997-06-12 |
AU1191697A (en) | 1997-07-03 |
EP0865462A1 (de) | 1998-09-23 |
DE59607281D1 (de) | 2001-08-16 |
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