WO2008104697A2 - Procede de realisation de panneaux en materiau renouvelable expanse et dispositif associe - Google Patents
Procede de realisation de panneaux en materiau renouvelable expanse et dispositif associe Download PDFInfo
- Publication number
- WO2008104697A2 WO2008104697A2 PCT/FR2008/050212 FR2008050212W WO2008104697A2 WO 2008104697 A2 WO2008104697 A2 WO 2008104697A2 FR 2008050212 W FR2008050212 W FR 2008050212W WO 2008104697 A2 WO2008104697 A2 WO 2008104697A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- renewable material
- material according
- producing panels
- rod
- cooling
- 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
- B29C44/34—Auxiliary operations
- B29C44/36—Feeding the material to be shaped
- B29C44/46—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length
- B29C44/468—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length in a plurality of parallel streams which unite during the foaming
-
- 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
- B29C44/56—After-treatment of articles, e.g. for altering the shape
- B29C44/5627—After-treatment of articles, e.g. for altering the shape by mechanical deformation, e.g. crushing, embossing, stretching
- B29C44/5654—Subdividing foamed articles to obtain particular surface properties, e.g. on multiple modules
-
- 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
- B29C44/60—Measuring, controlling or regulating
- B29C44/605—Calibration following a shaping operation, e.g. extrusion
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/06—Rod-shaped
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
- B29C48/908—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article characterised by calibrator surface, e.g. structure or holes for lubrication, cooling or venting
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/911—Cooling
- B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
- B29C48/914—Cooling of flat articles, e.g. using specially adapted supporting means cooling drums
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/911—Cooling
- B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
- B29C48/915—Cooling of flat articles, e.g. using specially adapted supporting means with means for improving the adhesion to the supporting means
- B29C48/916—Cooling of flat articles, e.g. using specially adapted supporting means with means for improving the adhesion to the supporting means using 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
- B29C48/904—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article using dry calibration, i.e. no quenching tank, e.g. with water spray for cooling or lubrication
-
- 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
- B29K2003/00—Use of starch or derivatives as moulding material
Definitions
- the present invention relates to a method of producing a large panel of renewable material.
- the invention also covers an associated device for producing this panel.
- Sheets of foam-based material are known and are used in a great many applications, such as insulation in the building or in any other field.
- the existing panels are based on expanded foam of synthetic chemical compounds such as polystyrenes or polyurethanes.
- foams can be perfectly controlled in their characteristics of mechanical strength, density, pore diameter for example.
- These panels can also be made from expanded beads and glued together in a mold that allows to obtain panels of glued balls.
- compositions derived from biodegradable materials and especially of vegetal origin which is therefore renewable, but then the problem arises with the production of panels of large dimensions and / or of great thickness.
- the present invention aims to provide a method of producing panels of large dimensions and / or high thicknesses from renewable materials of plant origin and biodegradable.
- the rest of the description is based on a composition based on starch foam to illustrate the process, regardless of the origin of this starch.
- the invention also covers any similar renewable material of vegetable origin, which is biodegradable and exhibits the same behavior.
- a well-known way of producing a product from starch foam is to extrude the composition through a die under very high pressure by means of a screw extruder.
- the extrusion pressure is very important, of the order of 80 to 120 bar.
- the calibrated die must then give the foam its final shape but there is a very strong expansion at the outlet of the die when the foam is no longer subjected to atmospheric pressure, related to the vaporization of the water contained in said composition .
- the method according to the present invention aims to remedy this problem by proposing a method for producing panels of large dimensions and / or thick in an expanded material based on a composition of renewable material, of plant origin such as starch, a process which comprises the following succession of steps:
- Each unit element is of a suitable size to allow instantaneous evacuation of the released water vapor.
- a composition based on potato starch a ring of three centimeters in section is adapted.
- the small section of the unitary element thus produced requires an extruder working at acceptable pressures much lower than the pressures of 80 or even more than 100 bars of the prior art.
- the ring must also have a section with a geometry such that it is symmetrical with respect to the center so as to avoid distortions.
- the bonding surface In order to optimize the longitudinal bonding of the rods of the next phase of the process, the bonding surface, and therefore the bonding surface, must be optimal.
- An optimized section and considered as a preferred embodiment of the present invention consists in making rods of hexagonal section.
- the rods of the same layer are glued by two opposite faces so as to have two edges in the vertical plane and the superimposed layers are offset by a half-section of rod on one side and the alternatively to allow a perfect interlocking.
- the method of producing a plate according to the present invention makes it possible to obtain all dimensions of plates A x B, these dimensions resulting from the number of rods assembled and of a thickness [chosen, the length L allowing a large choice of thicknesses .
- the speed of a rod at the exit of the die of an extruder is about a speed of 2 m / s and the temperature for a starch-based composition is 150 ° C.
- the method according to the present invention provides a calibration step of the rod. This calibration step consists in passing the rod at the extrusion outlet through a conformation chamber to the profile and the exact dimensions of the rod to obtain.
- the rod in order to perfect the expansion within this conformation chamber and to avoid expansion out of this chamber, the rod is subjected to an energy field, more particularly a wave field. electromagnetic.
- the gases thus contained in the ring quickly relax under the action of this energy supply and cause maximum and integral expansion of the rod within the shaping chamber.
- a conformation chamber as provided in the embodiment of the device according to the present invention, there may be mentioned a chamber made of porous material obtained from polytetrafluoroethylene.
- the rod thus shaped is still at a high temperature of the order of a hundred degrees, so flexible and deformable.
- the method according to the present invention provides a cooling step with simultaneous calibration output of the shaping chamber.
- This cooling step with calibration is carried out by passing the rod in a dynamic cooling shaper.
- Such a dynamic cooling shaper is constituted in the embodiment of the device according to the present from at least one set of metal belts movable in translation along the longitudinal working axis.
- the alignment is linked to that of the calibration chamber and that of the conformation chamber to maintain perfect straightness of the profile.
- the speed of the strips must be adapted and very slightly less than the output speed of the rod of the calibration and conformation chambers because there is a shrinkage of the ring during the cooling, and therefore a decrease in the length.
- a speed identical to that of the rod at the exit of the chambers could cause cracks on the surface of the rods due to differential traction.
- the speed along a belt can not vary, it is advantageous according to a preferred embodiment of the device, to provide a succession of several sets of belts, each set having a different speed with recovery of the ring.
- the belts are cooled in the air on their return portion since each belt face in contact with the corresponding face of the rod is directly accessible on this return portion.
- An element of the device consists in using either laser cutting means or a hyperbaric water jet with reciprocating movement of the cutting head.
- Such cutting means avoid disturbing the movement of the rod which does not undergo any mechanical effort.
- the portion L of rod thus cut must be recovered and separated from the continuous rod leaving the dynamic cooling controller.
- the process according to the present invention provides a suction separation step.
- Suitable means for producing the device according to the invention is a set of at least two transfer tubes.
- Each transfer tube has an internal profile identical to that of the ring, of dimensions equal to those of the ring with the necessary clearance.
- the first tube collects a rod and positions it on the layer being formed while the second tube in masked time collects the next rod and so on either side of the middle of the layer to be produced.
- Each tube may comprise several movable sectors such as jaws so as to release the ring contained in said tube. Thus, the sectors likely to disturb the removal are retracted.
- the sectors that maintain the rod are equipped with suction nozzle to maintain the ring by depression.
- the bonding of the rods prior to their application to the layer is achieved by any suitable means.
- One way is a glue spray.
- the rods are juxtaposed within the same layer and the layers fit perfectly with the appropriate offset as mentioned above.
- the method thus makes it possible to constitute a block of dimensions A x B x L, which is not limiting in theory, but nevertheless of several meters in reality.
- the block thus produced is immediately usable to be cut into slices of dimensions A ⁇ x B x _ 1 constituting plates of large size and thickness chosen up to several centimeters or tens of centimeters.
- the extruder used only requires current pressures to generate a ring of a few cm 2 section through the die. Due to the heart close to the surface, the release of gases and more particularly of water vapor is faster and complete leading to a high homogeneity of the material obtained.
- the block consisting of homogeneous ring is in fact also homogeneous.
- the panels obtained can be considered as monolithic.
- the surface state of the faces of the panels is also satisfactory since it results from cutting the block in the mass.
- the proposed block has been defined as parallelepiped but it could take awec forms a triangular section, substantially circular or oval or diabolo since it is sufficient to provide the layering of the layers appropriately.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Laminated Bodies (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/526,802 US20100018642A1 (en) | 2007-02-12 | 2008-02-12 | Method for producing panels consisting of an expanded renewable material, and associated device |
EP08762064A EP2117798A2 (fr) | 2007-02-12 | 2008-02-12 | Procede de realisation d'un panneau de grandes dimensions en materiau renouvelable et dispositif associe |
MX2009008595A MX2009008595A (es) | 2007-02-12 | 2008-02-12 | Metodo para producir paneles que consisten de un material renovable expandido, y dispositivo asociado. |
CA002677752A CA2677752A1 (fr) | 2007-02-12 | 2008-02-12 | Procede de realisation d'un panneau de grandes dimensions en materiau renouvelable et dispositif associe |
IL200331A IL200331A0 (en) | 2007-02-12 | 2009-08-11 | Method for producing panels consisting of an expanded renewable material, and associated device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0700966 | 2007-02-12 | ||
FR0700966A FR2912340A1 (fr) | 2007-02-12 | 2007-02-12 | Procede et dispositif de fabrication d'elements en mousse d' amidon expanse, element obtenu |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2008104697A2 true WO2008104697A2 (fr) | 2008-09-04 |
WO2008104697A3 WO2008104697A3 (fr) | 2008-11-06 |
Family
ID=38472969
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2008/050212 WO2008104697A2 (fr) | 2007-02-12 | 2008-02-12 | Procede de realisation de panneaux en materiau renouvelable expanse et dispositif associe |
Country Status (9)
Country | Link |
---|---|
US (1) | US20100018642A1 (fr) |
EP (1) | EP2117798A2 (fr) |
CN (1) | CN101657309A (fr) |
CA (1) | CA2677752A1 (fr) |
FR (1) | FR2912340A1 (fr) |
IL (1) | IL200331A0 (fr) |
MX (1) | MX2009008595A (fr) |
RU (1) | RU2009132465A (fr) |
WO (1) | WO2008104697A2 (fr) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2047157A (en) * | 1979-04-24 | 1980-11-26 | Lavorazione Mat Plast | Foamed plastics slabs |
US5514325A (en) * | 1994-02-22 | 1996-05-07 | C. A. Greiner & Sohne Gesellschaft M.B.H. | Process for cooling and calibrating elongated objects made of plastic together with cooling and calibrating device |
US5589243A (en) * | 1992-05-04 | 1996-12-31 | Webcore Technologies, Inc. | Reinforced foam cores and method and apparatus of production |
GB2352230A (en) * | 1999-07-22 | 2001-01-24 | Dyon Ltd | Biodegradable packaging material |
EP1591228A1 (fr) * | 2004-04-30 | 2005-11-02 | Green Light Products Ltd. | Procédé et appareil de préparation d'une matière d'emballage biodégradable |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0921148A1 (fr) * | 1997-12-08 | 1999-06-09 | Dow Deutschland Inc. | Mousse en cordons de faible densité |
-
2007
- 2007-02-12 FR FR0700966A patent/FR2912340A1/fr not_active Withdrawn
-
2008
- 2008-02-12 CA CA002677752A patent/CA2677752A1/fr not_active Abandoned
- 2008-02-12 US US12/526,802 patent/US20100018642A1/en not_active Abandoned
- 2008-02-12 WO PCT/FR2008/050212 patent/WO2008104697A2/fr active Application Filing
- 2008-02-12 CN CN200880004817A patent/CN101657309A/zh active Pending
- 2008-02-12 EP EP08762064A patent/EP2117798A2/fr not_active Withdrawn
- 2008-02-12 MX MX2009008595A patent/MX2009008595A/es unknown
- 2008-02-12 RU RU2009132465/05A patent/RU2009132465A/ru not_active Application Discontinuation
-
2009
- 2009-08-11 IL IL200331A patent/IL200331A0/en unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2047157A (en) * | 1979-04-24 | 1980-11-26 | Lavorazione Mat Plast | Foamed plastics slabs |
US5589243A (en) * | 1992-05-04 | 1996-12-31 | Webcore Technologies, Inc. | Reinforced foam cores and method and apparatus of production |
US5514325A (en) * | 1994-02-22 | 1996-05-07 | C. A. Greiner & Sohne Gesellschaft M.B.H. | Process for cooling and calibrating elongated objects made of plastic together with cooling and calibrating device |
GB2352230A (en) * | 1999-07-22 | 2001-01-24 | Dyon Ltd | Biodegradable packaging material |
EP1591228A1 (fr) * | 2004-04-30 | 2005-11-02 | Green Light Products Ltd. | Procédé et appareil de préparation d'une matière d'emballage biodégradable |
Non-Patent Citations (1)
Title |
---|
See also references of EP2117798A2 * |
Also Published As
Publication number | Publication date |
---|---|
EP2117798A2 (fr) | 2009-11-18 |
WO2008104697A3 (fr) | 2008-11-06 |
US20100018642A1 (en) | 2010-01-28 |
IL200331A0 (en) | 2010-04-29 |
CA2677752A1 (fr) | 2008-09-04 |
FR2912340A1 (fr) | 2008-08-15 |
RU2009132465A (ru) | 2011-03-20 |
MX2009008595A (es) | 2009-11-10 |
CN101657309A (zh) | 2010-02-24 |
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