WO2010079212A2 - Procédé et dispositif de réalisation de pièces moulées à partir de mousses particulaires - Google Patents
Procédé et dispositif de réalisation de pièces moulées à partir de mousses particulaires Download PDFInfo
- Publication number
- WO2010079212A2 WO2010079212A2 PCT/EP2010/050151 EP2010050151W WO2010079212A2 WO 2010079212 A2 WO2010079212 A2 WO 2010079212A2 EP 2010050151 W EP2010050151 W EP 2010050151W WO 2010079212 A2 WO2010079212 A2 WO 2010079212A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- foam particles
- steam
- cavity
- mold
- thermoplastic
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/0011—Moulds or cores; Details thereof or accessories therefor thin-walled moulds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means
- B29C33/04—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means using liquids, gas or steam
- B29C33/048—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means using liquids, gas or steam using steam
-
- 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
-
- 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
- B29C44/424—Details of machines
- B29C44/425—Valve or nozzle constructions; Details of injection devices
- B29C44/427—Valve or nozzle constructions; Details of injection devices having several injection gates
-
- 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
- B29C44/58—Moulds
-
- 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
- B29K2105/04—Condition, form or state of moulded material or of the material to be shaped cellular or porous
Definitions
- the invention relates to a method for producing a molded part, in which a cavity of a molding tool is filled with foam particles formed from a thermoplastic material, wherein the filled cavity is subjected to pressurized hot steam to cause expansion of the foam particles, the foam particles to soften and weld together thermoplastic and form a thermoplastic surface of the molding formed from the welded foam particles on a wall of the cavity.
- Such a construction offers the possibility of fastening different molding tools in the steam chamber by means of a clamping frame within the scope of a staggered machine size. Milled or cast molds are used.
- EPS is processed at temperatures around 110 C and pressures around 1, 5 bar, while EPP is processed according to the higher melting point at about 160 0 C and at up to 7.5 bar.
- the technique in use usually uses the described tool design within a steam chamber. The molds must be adapted to the steam chamber dimensions.
- the invention is therefore based on the object to specify an improved method with lower energy consumption and an improved apparatus for producing a molded part.
- the object is achieved by a method having the features of claim 1 and a device having the features of claim 14.
- At least one cavity of a molding tool is filled with foam particles formed from a thermoplastic material.
- the mold may comprise one or more cavities.
- the filled cavity is subjected to pressurized hot water vapor to cause expansion of the foam particles, to cause thermoplasticity of a surface of the foam particles, thermoplastic bonding of the foam particles to each other by expansion pressure, and a thermoplastic surface of the molded article formed from the welded foam particles form a wall of the cavity.
- Thermoplasticity is a soft, sticky state that some substances reach when they reach a softening point.
- the application of water vapor is timed via at least one valve, in particular at an uncontrolled maximum pressure at least once performed so that the water vapor as largely uncondensed, dry water vapor within a short evaporation time reaches a majority of the particles before the thermoplastic surface of the molding is formed.
- dry steam is meant such water vapor which contains little condensate and consists to a large part of gaseous water.
- the particles are supplied with energy from the steam so quickly that the particles first become superficially thermoplastic and only then expand.
- a supply line between the valve and the cavity must be as short as possible, so that no condensation of the steam occurs.
- this supply line is shorter than 500 mm.
- the supply of pressure is unregulated over a short vaporization period instead of pressure-controlled, as known from the prior art. While at controlled pressure by interval-like opening and closing of the valve the pressure conditions in the supply lead to a location and time-dependent condensation and evaporation again in the water vapor and thus escapes energy from the water vapor is used with rapid energy input into the foam particles, as in the process according to the invention, a much larger proportion of energy to form the molding.
- the time for annealing can be shortened without the shaped body shrinking too much.
- the largely dry water vapor on the foam particles causes the energy to penetrate into the interior of the foam particles less rapidly, as a result of which the foam particles initially become thermoplastic on the surface and only subsequently expand. This avoids that at too early expansion of the water vapor does not reach all foam particles.
- the supply of the steam takes place in particular so briefly that the thermoplastic material of the foam particles is not destroyed by overheating.
- Foam particles of expandable polystyrene (EPS) and / or of expandable polypropylene (EPP) and / or of expandable polyethylene (EPE) and / or of another expandable polyolefin are preferably used. Furthermore, foam particles of at least one bioplastic material, in particular starch, corn starch or other renewable raw materials or thermolastic coated materials.
- EPP has a higher rate of expansion than EPS.
- the comparatively high pressure of the steam causes the EPP particles to not expand too much when their surface is thermoplastic.
- the maximum pressure used for the vapor deposition is preferably in a range of 5 bar to 10 bar, in particular about 7 bar and corresponds to the unregulated form from a device for the production of steam. Thus eliminates otherwise required effort for the pressure reduction.
- the steaming time is preferably between 0.2 s and 3 s, in particular at about 1.5 s.
- the foam particles are preferably steamed several times from different sides (transverse evaporation). This has the advantage that substantially all foam particles are reached by the water vapor even if a thermoplastic surface has already formed on one of the sides and the inflow of water vapor from this side is impeded accordingly.
- a plurality of steam supply lines with corresponding valves are preferably provided on different sides of the mold.
- the cavity and / or provided for steaming steam supply lines are flushed by means of compressed air to remove condensate.
- the steam supply lines and / or the cavity should be rinsed, for example, after the steaming with compressed air, that is dried, so that the advantages of the process remain in a subsequent cycle.
- foam particles provided with a blowing agent are used.
- pentane is used as the blowing agent. This expands upon heating and provides for the expansion of the softened by the heating thermoplastic material. At least part of the propellant is absorbed by the water vapor.
- the introduction of the foam particles in the cavity is preferably carried out by blowing, in particular under pressure so that the foam particles are compressed.
- the precompression increases the degree of expansion of the foam particles on later exposure to water vapor.
- the foam particles can be poured.
- a steam chamber accommodating the mold may be provided with heat insulation so that heat transfer from the water vapor to the mold part and to the cavity is concentrated and reduced to an environment. In this way the energy demand and the steam consumption are further reduced.
- a vapor line disposed between the valve and the mold may be thermally insulated on an inner side, particularly if the valve is too far away from the mold, to otherwise ensure that the water vapor enters the cavity as dry water vapor.
- the steam can be fed directly to the mold.
- the mold may be arranged in a steam chamber.
- the steam chamber is preferably as small as possible in relation to the size of the cavity in order to prevent the water vapor from condensing and to keep the energy losses low.
- the mold is preferably cooled after the steaming with water. After evaporation, cooling of the molded part can be carried out with vacuum. In this case, any remaining condensate is evaporated and used its evaporative cooling for cooling the mold.
- FIG. 1 shows an apparatus for producing a molded part with an open mold and a storage container for foam particles
- FIG. 2 shows the device with closed mold
- FIG. 3 shows the device during the filling of the mold with steam
- FIG. 4 shows the device with the reservoir filled with compressed air
- FIG. 5 shows the device with an open valve on a filling cylinder
- FIG. 6 shows the device during filling of the molding tool with the foam particles from the reservoir
- FIG. 7 shows the device during the blowing back of foam particles still in the hoses
- FIG. 8 shows the device when lowering the pressure in the mold
- FIG. 9 shows the device during rinsing of the mold with steam
- FIG. 10 shows the device during a transverse evaporation from a first direction
- FIG. 11 shows the device during a transverse evaporation from another direction
- FIG. 12 shows the device during an autoclave vapor deposition
- FIG. 14 shows the device during stabilization of the formed part by vacuum
- FIG. 15 shows the device during demoulding of the molded part from one of the mold parts
- FIG. 16 shows the device during demoulding of the molded part from the other of the mold parts
- FIG. 17 shows the device with the mold open and mold ejected
- Figure 18 is a vapor state diagram illustrating the term "dry vapor.
- FIG. 1 shows a device 1 for producing a molded part.
- the device 1 comprises a steam chamber 2, which is formed from two steam chamber parts 2.1, 2.2.
- a mold 3 is arranged, which also comprises two mold parts 3.1, 3.2, each of which is associated with one of the steam chamber parts 2.1, 2.2.
- the mold parts 3.1, 3.2 are perforated so that water vapor and air, but no larger particles can enter and exit.
- the steam chamber 2 can be supplied via valves 4.1 to 4.8 with steam, compressed air, water or vacuum.
- a reservoir 5 is provided, are stored in the foam particles 6 made of a thermoplastic material.
- the reservoir is also provided with valves 4.9, 4.10.
- Foam particles 6 can be supplied from the storage container 5 to the mold 3 via hoses 7 and filling cylinders 8.
- a connection between the reservoir 5 and the hoses 7 can be produced or interrupted by a slide 9.
- the filling cylinder also has two valves 4.11, 4.12.
- the mold 1 is shown at the beginning of a cycle for the production of the molded part in a state in which the steam chamber parts 2.1, 2.2 are opened with the mold parts 3.1, 3.2.
- the steam chamber parts 2.1, 2.2 and the mold parts 3.1, 3.2 are brought together and closed, as shown in Figure 2.
- the mold parts 3.1, 3.2 now include a cavity which has the shape of the molded part to be produced.
- valves 4.2 to 4.7 are closed while the valves 4.1 and 4.8 are open in order to infiltrate the steam chamber 2 and the mold 3 with compressed air L in order to build up a back pressure of, for example, 2 bar.
- valve 4.9 is opened on the storage container 5 while the valve 4.10 is closed.
- the reservoir is pressurized with compressed air L and at a slightly higher pressure, for example, 2.5 bar, brought as the steam chamber 2 with the mold.
- the valve 4.11 is opened at the filling cylinders 8 while the valve 4.12 is closed.
- filling piston 10 in the filling cylinders 8 are moved by compressed air in such a way that a filling pressure, for example of 5 bar, is created in the filling cylinders 8.
- the pressure in the reservoir 5 is for this purpose higher than the pressure in the cavity of the mold. 3
- valve 4.9 is closed and the valves 4.10 and 4.12 are opened.
- the filling pressure in the filling cylinders 8 now causes the foam particles 6 still in the hoses to be blown back into the storage container 5, since there the pressure can escape via the valve 4.10.
- the case falling filling pressure in the filling cylinders 8 causes a reset of the filling piston 10, so that the mold 3 is closed.
- valves 4.1, 4.8 are opened for the supply of water vapor which escapes again via the valves 4.4, 4.5 which are also open.
- the mold 3 is rinsed with steam. As a result, air is displaced from the mold 3, which would otherwise act as a heat insulator.
- a so-called transverse evaporation is performed.
- water vapor D is supplied in a timed manner over a short period of time via the opened valve 4.1 only to the steam chamber part 2.1 under high pressure not regulated by the valve 4.1.
- the valves 4.2 to 4.8 are closed.
- the water vapor D flows through the foam particles 6 located in the mold 3 to the pressure medium. following cases in the direction of the steam chamber part 2.2.
- the valve 4.1 is closed and the steam supply is interrupted.
- the pressure in the steam chamber 2 is reduced by opening the valve 4.5.
- transverse evaporation takes place in the same way from the other direction by applying pressurized steam via the valve 4.8. Subsequently, the pressure escapes by opening the valve 4.4.
- a softening and expansion of the foam particles 6 is effected.
- the foam particles 6 melt together thermoplasticly and form the molded part 11 with a thermoplastic surface on a wall of the cavity of the molding tool 3.
- the vapor deposition in FIGS. 10 and 11 is time-controlled so that the water vapor D is present as substantially uncondensed, dry water vapor within reaches a short steaming time, a plurality of the foam particles 6 before the thermoplastic surface of the molding 11 is formed.
- the foam particles 6 from the steam D energy is supplied so quickly that the foam particles 6 are first superficially thermoplastic and then expand.
- a so-called autoclave vaporization takes place by opening the valves 4.1, 4.8 and again applying steam to the entire steam chamber 2.
- the cavity is heated with steam so that the surface of the formed body is baked.
- the pressure is then released via the valves 4.4, 4.5.
- valves 4.3 and 4.6 are opened and the mold 3 is sprayed from the outside with water in order to cool it, for example from about 140 ° C. to about 80 ° C.
- FIG. 14 a vacuum is generated in the steam chamber 2 via the open valves 4.4, 4.5. In this case, the molding 11 is stabilized. At the same time still existing condensate is evaporated and its evaporation cooling used for cooling the mold 3.
- the valve 4.1 is opened and compressed air is introduced, which causes the mold part 11 to be removed from the mold part 3.1. In the same way, demoulding takes place from the mold part 3.2 by opening the valve 4.8 and applying compressed air in FIG. 16.
- the device 1 is now ready for a new cycle, beginning with FIG. 1.
- the supply of the steam D takes place in particular so briefly that the thermoplastic material of the foam particles 6 is not destroyed by overheating.
- foam particles 6 of expandable polystyrene (EPS) and / or of expandable polypropylene (EPP) and / or of expandable polyethylene (EPE) and / or of another expandable polyolefin are used. It is also possible to use mixtures of several of the substances mentioned.
- the maximum pressure used for the vapor deposition is preferably in a range of 5 bar to 10 bar, in particular about 7 bar and corresponds to the unregulated form from a device for the generation of steam D.
- the steaming time is preferably between 0.2 s and 3 s, in particular at about 1.5 s.
- the cavity and / or provided for steaming steam supply lines can be flushed by means of compressed air L to remove condensate.
- foam particles 6 provided with a blowing agent are used.
- pentane is used as the blowing agent.
- the mold 3 may be provided with a thermal insulation so that a heat transfer from the water vapor D and / or the foam particles 6 on the mold 3 and / or is reduced to an environment.
- the steam D can be fed directly to the mold 3 without a steam chamber 2.
- FIG. 18 shows a vapor state diagram (Mollier (h, s) diagram).
- the abscissa shows the entropy s of the steam with the unit kJ / (kg * K) and the ordinate the corresponding enthalpy h with the unit kJ / kg applied.
- the pressure p in bar, the temperature T in 0 C and the specific volume v in m / kg are given.
- Isobars that is lines of equal pressure p, run essentially diagonally from bottom left to top right and are shown throughout.
- Isochores that is, lines of the same specific volume v, are similar to the isobars and are shown in dashed lines. The value indications of the specific volume are shown framed for distinction.
- a so-called saturated steam line SDL is drawn. From the saturated steam line SDL and above, the steam is dry to superheated. Below the saturated steam line SDL one speaks of wet steam.
- the parameters pressure p and temperature T are preferably conducted so that the vapor state is above the saturated steam line SDL.
- a pressure p in a pressure range BpI of about 0.5 bar to 1.5 bar is preferably selected.
- a pressure p in a pressure range Bp2 of about 2 to 5 bar and in the case of an extrusion material in a pressure range Bp3 of about 5 to 8 bar is preferably selected for autoclave material.
- FIG. 18 also shows a relationship between a flow velocity c of the vapor and an enthalpy difference Ah of the vapor.
- the aim is the highest possible flow velocity c and thus a correspondingly high enthalpy difference Ah.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Molding Of Porous Articles (AREA)
Abstract
La présente invention concerne un procédé de réalisation d'une pièce moulée (11), la cavité d'un outil de moulage (3) étant remplie de particules de mousse (6) formées de matière thermoplastique. La cavité remplie est soumise à de la vapeur d'eau (D) à haute température sous pression afin de produire l'expansion des particules de mousse (6), de ramollir les particules de mousse (6) et de réaliser leur soudage thermoplastique mutuel, et de former la surface thermoplastique de la pièce moulées (11) constituée des particules de mousses (6) soudées, sur une paroi de la cavité. L'application de vapeur d'eau (D) est réalisée au moins une fois en étant régulée dans le temps par l'intermédiaire d'au moins une soupape (4.1, 4.8) de sorte qu'au cours d'un temps d'application de vapeur court, la vapeur d'eau (D) atteint une pluralité des particules de mousse (6) sous la forme de vapeur d'eau (D) sèche dans une large mesure non condensée, avant formation de la surface thermoplastique de la pièce moulée (11). De l'énergie issue de la vapeur d'eau (D) est apportée aux particules de mousse (6) avec une rapidité telle que le particules de mousse (6) deviennent tout d'abord thermoplastique en surface, puis subissent une expansion.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10701486A EP2376268A2 (fr) | 2009-01-12 | 2010-01-08 | Procédé et dispositif de réalisation de pièces moulées à partir de mousses particulaires |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009004386.1 | 2009-01-12 | ||
DE200910004386 DE102009004386A1 (de) | 2009-01-12 | 2009-01-12 | Verfahren und Vorrichtung zur Herstellung von Formteilen aus Partikelschäumen |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2010079212A2 true WO2010079212A2 (fr) | 2010-07-15 |
WO2010079212A3 WO2010079212A3 (fr) | 2011-02-03 |
Family
ID=42237413
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2010/050151 WO2010079212A2 (fr) | 2009-01-12 | 2010-01-08 | Procédé et dispositif de réalisation de pièces moulées à partir de mousses particulaires |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2376268A2 (fr) |
DE (1) | DE102009004386A1 (fr) |
WO (1) | WO2010079212A2 (fr) |
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US9457499B2 (en) | 2013-03-15 | 2016-10-04 | Herman Miller, Inc. | Particle foam component having a textured surface and method and mold for the manufacture thereof |
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JP1582717S (fr) | 2016-09-02 | 2017-07-31 | ||
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USD899061S1 (en) | 2017-10-05 | 2020-10-20 | Adidas Ag | Shoe |
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WO1992005935A1 (fr) | 1990-10-09 | 1992-04-16 | Szubelick, Theresa, Ann +Ef | Systeme d'apport de vapeur de grande qualite pour des machines demoulage |
EP0666796A1 (fr) | 1992-10-26 | 1995-08-16 | Ph Kurtz Eisenhammer Gmbh & Co | Procede pour la fabrication de pieces moulees en plastique expanse et moule pour la mise en uvre de ce procede. |
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EP1329298A2 (fr) | 2002-01-18 | 2003-07-23 | Basf Aktiengesellschaft | Appareil de fabrication d'articles en matière mousse |
DE102004004657A1 (de) | 2004-01-29 | 2005-08-25 | Wacker & Ziegler Gmbh | Energieeffizienter Formteilautomat mit integrierter Dampferzeugung |
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US6800227B1 (en) * | 1998-03-31 | 2004-10-05 | Daisen Industry Co., Ltd. | Material bead charging method, synthetic resin mold foam forming method using this method, and mold foam formed product obtained by this method |
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2009
- 2009-01-12 DE DE200910004386 patent/DE102009004386A1/de not_active Ceased
-
2010
- 2010-01-08 EP EP10701486A patent/EP2376268A2/fr not_active Withdrawn
- 2010-01-08 WO PCT/EP2010/050151 patent/WO2010079212A2/fr active Application Filing
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WO1992005935A1 (fr) | 1990-10-09 | 1992-04-16 | Szubelick, Theresa, Ann +Ef | Systeme d'apport de vapeur de grande qualite pour des machines demoulage |
EP0666796A1 (fr) | 1992-10-26 | 1995-08-16 | Ph Kurtz Eisenhammer Gmbh & Co | Procede pour la fabrication de pieces moulees en plastique expanse et moule pour la mise en uvre de ce procede. |
US5858288A (en) | 1996-07-18 | 1999-01-12 | Bullard; Calvin P. | Method for molding expandable polystyrene foam articles |
EP1329298A2 (fr) | 2002-01-18 | 2003-07-23 | Basf Aktiengesellschaft | Appareil de fabrication d'articles en matière mousse |
DE102004004657A1 (de) | 2004-01-29 | 2005-08-25 | Wacker & Ziegler Gmbh | Energieeffizienter Formteilautomat mit integrierter Dampferzeugung |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN102352115A (zh) * | 2011-07-07 | 2012-02-15 | 中山市中健包装有限公司 | 植物纤维及植物粉体发泡材料的制作方法 |
US9457499B2 (en) | 2013-03-15 | 2016-10-04 | Herman Miller, Inc. | Particle foam component having a textured surface and method and mold for the manufacture thereof |
Also Published As
Publication number | Publication date |
---|---|
WO2010079212A3 (fr) | 2011-02-03 |
DE102009004386A1 (de) | 2010-07-15 |
EP2376268A2 (fr) | 2011-10-19 |
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