FR2481192A1 - Open=ended mould for making blocks of expanded polystyrene - to make blocks of any length, opt. at various thicknesses - Google Patents

Open=ended mould for making blocks of expanded polystyrene - to make blocks of any length, opt. at various thicknesses Download PDF

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Publication number
FR2481192A1
FR2481192A1 FR8009481A FR8009481A FR2481192A1 FR 2481192 A1 FR2481192 A1 FR 2481192A1 FR 8009481 A FR8009481 A FR 8009481A FR 8009481 A FR8009481 A FR 8009481A FR 2481192 A1 FR2481192 A1 FR 2481192A1
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FR
France
Prior art keywords
expanded polystyrene
blocks
length
cavity
block
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
FR8009481A
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French (fr)
Inventor
Gilbert Fricker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
RHENANE
Original Assignee
RHENANE
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 RHENANE filed Critical RHENANE
Priority to FR8009481A priority Critical patent/FR2481192A1/en
Publication of FR2481192A1 publication Critical patent/FR2481192A1/en
Pending legal-status Critical Current

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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
    • B29C44/20—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
    • B29C44/206—Using expandable particles or beads as starting material
    • 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
    • B29C44/20—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
    • B29C44/26—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length using several expanding steps

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  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

Endless blocks of expanded polystyrene are made by expanding and fusing expandable polystyrene beads in a mould cavity of which one end is sealed by a previously made block of expanded polystyrene with which the fresh moulding becomes integrated. Pref. the mould can slide longitudinally relative to the end sealed by the prior moulding, or vice versa, to produce mouldings of various overall lengths. Opt. the depth of the cavity can be altered, to produce blocks at carious different thicknesses. For producing thick board or blocks to any required length either to size or from which shorter lengths may be cut. More versatile than moulds with a specific cavity size for mfg. individual blocks.

Description

ta présente invention concerne un procédé de moulage de billes de polystyrène expansible permettant d'obtenir des blocs de polystyrène expansé de longueur illimitée
Les procédés de moulage connus de polystyrène expansé sont classes en trois catégories : - Le moulage de blocs en discontinu permet de réaliser des blocs de
polystyrène expansé de dimension donnée wen général 5,00 m x
1,25 m x 0,55 m- ou de dimension faiblement variable an longueurs
largeur et épaisseur.your present invention relates to a process for molding expandable polystyrene beads making it possible to obtain blocks of expanded polystyrene of unlimited length
The known molding processes for expanded polystyrene are classified into three categories: - The discontinuous block molding makes it possible to produce blocks of
expanded polystyrene of given size wen generally 5.00 mx
1.25 mx 0.55 m- or slightly variable in length
width and thickness.

- Le moulage de plaques en discontinu permet d'obtenir des plaques
de polystyrène expansé de petite dimension, par exemple i OO m x
0,05 m r. 0303 m.- The discontinuous molding of plates makes it possible to obtain plates
of small expanded polystyrene, for example i OO mx
0.05 m r. 0303 m.

Il est possible avec de tels disposltlis de réaliser des pièces
moulées de forme très variable, mais toujours an petite
dimension - Le moulage de plaques an continu permet la réalisation d 'une "bande"
de polystyrène epansé, en général de largeur 1,25 m et d'épaisseur
variable de l à 15 cm. Cette bande est ensuite débitée à la longueur soffnaitee
Le moulage de blocs en discontinu comporta l'inconvénient essen- tiel de ne permettre, pour un moule donné, que la réalisation de blocs de longueur définie, ou variable par exemple 4,00 a 5D00 m.Les variations possibles des dimensions sont toujours très limitées sur un moule donné, notamment an ce qui concerne la longueur.It is possible with such devices to make parts
very variable in shape, but always small
dimension - Continuous plate molding allows the creation of a "strip"
of expanded polystyrene, generally 1.25 m wide and thick
variable from l to 15 cm. This strip is then cut to length soffnaitee
The discontinuous molding of blocks had the essential drawback of allowing, for a given mold, only the production of blocks of defined length, or variable for example 4.00 to 5D00 m. The possible variations in dimensions are always very limited on a given mold, especially in terms of length.

Le procédé de moulage, objet de l'invention, permet d'éviter cet inconvénient. Il consiste à obtenir, suivant un procédé de moulage discontinu par voie humide,un bloc de polystyrène expansé de longueur illimitée. Le principal inconvénient du moulage traditionnel de blocs en discontinu est donc supprimé puisque 1 on peut ainsi débiter des blocs à la longueur précise souhaitée, ce qui procure une grande flexibilité quant à la longueur. Toutes les chutes ou déchets engendrés par le procédé traditionnel connu sont ainsi supprimés. The molding process, object of the invention, makes it possible to avoid this drawback. It consists in obtaining, using a discontinuous wet molding process, a block of expanded polystyrene of unlimited length. The main drawback of traditional discontinuous block molding is therefore eliminated since 1 it is thus possible to cut blocks to the precise length desired, which provides great flexibility in terms of length. All the falls or waste generated by the known traditional process are thus eliminated.

ta cavité utilisée pour le moulage suivant l'invention est comparable aux moules utilisés dans le principe du moulage de blocs en procédé discontinu. Elle possède cependant une particularité, puisqutel- le ne comporte pas de fermeture ou de porte en bout. L'obturation du bout du moule est assurée par le volume de polystyrène expansé moulé préalablement. Le déroulement des phases de moulage est en tout point identique au procédé discontinu : alimentation du moule en perles de polystyrène préexpansé, fermeture du moule, mise sous pression de vapeur, observation d'un temps de refroidissement, démoulage par translation du bloc obtenu suivant l'axe horizontal du moule. Cette translation s'effectue de telle manière que l'extrémité du bloc obtenu permette d'obturer le moule pour la réalisation du bloc suivant.Par ailleurs, le fond du moule est mobile, ce qui permet de faire varier également la hauteur du bloc de polystyrène expansé obtenu. your cavity used for molding according to the invention is comparable to the molds used in the principle of block molding in a batch process. However, it has a special feature, since it does not have a closure or end door. The end of the mold is closed by the volume of pre-molded expanded polystyrene. The course of the molding phases is identical in all respects to the discontinuous process: feeding the mold with pre-expanded polystyrene beads, closing the mold, putting under vapor pressure, observing a cooling time, demolding by translation of the block obtained according to the horizontal axis of the mold. This translation takes place in such a way that the end of the block obtained makes it possible to close the mold for the production of the next block. Furthermore, the bottom of the mold is movable, which also makes it possible to vary the height of the block of expanded polystyrene obtained.

Cette invention permet donc la production d'un volume de polystyrène expansé de section donnée et de longueur indéfinie. La soudure entre les blocs "successifs" obtenus de façon discontinue est assurée par la mise sous pression de vapeur des perles de polystyrène préexpansé contenues dans la cavité ae moulage, et par la forme particulière du bout de moule comportant une configuration assurant la continuité et l'homogénéité du volume de polystyrène expansé produit. This invention therefore allows the production of a volume of expanded polystyrene of given section and of indefinite length. The welding between the "successive" blocks obtained in a discontinuous manner is ensured by the vapor pressure of the pre-expanded polystyrene beads contained in the mold cavity, and by the particular shape of the mold end comprising a configuration ensuring continuity and homogeneity of the volume of expanded polystyrene produced.

Les dessins annexés illustrent le principe du procédé suivant l'invention et les différentes phases de production. La figure 1 représente une coupe verticale du dispositif permettant le moulage discontinu d'un volume de polystyrène expansé de longueur indéfinie. Tel qu'il est représenté en figure 1, le procédé comprend une cavité de moulage (1) comportant une forme particulière sur sa paroi du bout (2). Le second bout de la cavité demoulage (3) est obturé par un volume de polystyrène expansé (4) moulé préalablement. The accompanying drawings illustrate the principle of the process according to the invention and the different production phases. FIG. 1 represents a vertical section of the device allowing the discontinuous molding of a volume of expanded polystyrene of indefinite length. As shown in Figure 1, the method comprises a molding cavity (1) having a particular shape on its end wall (2). The second end of the mold cavity (3) is closed by a volume of expanded polystyrene (4) previously molded.

La figure 2 illustre les phases suivantes : la cavité de moulage (1), obturée sur ses six faces, a été remplie de perles de polystyrène préexpansé qui vont être mises sous pression de vapeur et ainsi transformées en un bloc de polystyrène expansé dont l'extrémité se trouvera soudée au bout (3) du volume de polystyrène expansé obturant la cavité (1). En figure 3 on montre la translation du volume ainsi obtenu et sa mise en position pour obturer è nouveau le bout de la cavité (1). Le bloc de longueur indéfinie ainsi obtenu peut être découpé à la longueur souhaitée, indépendamment de la longueur du moule proprement dit. En figure 4 on voit que le fond (5) du moule est mobile, permettant ainsi de faire varier la hauteur du bloc de polystyrène à obtenir. FIG. 2 illustrates the following phases: the molding cavity (1), closed on its six faces, has been filled with pre-expanded polystyrene beads which will be put under vapor pressure and thus transformed into a block of expanded polystyrene, the end will be welded to the end (3) of the volume of expanded polystyrene closing the cavity (1). In Figure 3 we show the translation of the volume thus obtained and its positioning to close again the end of the cavity (1). The block of indefinite length thus obtained can be cut to the desired length, regardless of the length of the mold itself. In Figure 4 we see that the bottom (5) of the mold is movable, thereby varying the height of the block of polystyrene to be obtained.

Des applications particulièrement intéressantes de ce procédé peuvent être la fabrication industrielle de blocs de polystyrène expansé de longueur adaptée à la demande. Particularly interesting applications of this process can be the industrial manufacture of blocks of expanded polystyrene of length adapted to demand.

Claims (4)

REVENDICATIONS un bloc de polystyrène expansé (4). an expanded polystyrene block (4). que la cavité de moulage (i) est obturée sur une de ses faces par that the molding cavity (i) is closed on one of its faces by d'obtenir des blocs de polystyrene expansé caractérisé par le fait to obtain blocks of expanded polystyrene characterized by the fact ] . Procédé de moulage de billes de polystyrène expansible permettant ]. Process for molding expandable polystyrene beads allowing 2. Procédé suivant la revendication 1 caractérisé par le fait qu'il2. Method according to claim 1 characterized in that it permet la production d'un bloc de polystyrène expansé de longueur allows the production of a block of expanded polystyrene of length illimitée. unlimited. 3. Procédé suivant la revendication i caractérisé par le fait que la3. Method according to claim i characterized in that the cavité de moulage ( ] ) comporte sur la face opposée (2) à celle obtu molding cavity (]) has on the face opposite (2) to that obtu rée par le bloc de polystyrène expansé (4) une configuration created by the expanded polystyrene block (4) a configuration particulière assurant la continuité et l'homogénéité du volume particular ensuring continuity and homogeneity of the volume de polystyrène expansé produit. of expanded polystyrene produced. 4. Procédé suivant la revendication i caractérisé par le fait que4. Method according to claim i characterized in that la cavité de moulage (1) comporte un- fond mobile (5) permettant de the mold cavity (1) has a movable bottom (5) allowing faire varier la hauteur du bloc de polystyrène expansé de vary the height of the expanded polystyrene block by longueur illimitée à obtenir. unlimited length to obtain.
FR8009481A 1980-04-25 1980-04-25 Open=ended mould for making blocks of expanded polystyrene - to make blocks of any length, opt. at various thicknesses Pending FR2481192A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8009481A FR2481192A1 (en) 1980-04-25 1980-04-25 Open=ended mould for making blocks of expanded polystyrene - to make blocks of any length, opt. at various thicknesses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8009481A FR2481192A1 (en) 1980-04-25 1980-04-25 Open=ended mould for making blocks of expanded polystyrene - to make blocks of any length, opt. at various thicknesses

Publications (1)

Publication Number Publication Date
FR2481192A1 true FR2481192A1 (en) 1981-10-30

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2543485A1 (en) * 1983-03-30 1984-10-05 Schedel Wolfgang Process and apparatus for continuously moulding elongate articles from an expandable plastic
US4539167A (en) * 1983-04-05 1985-09-03 Schedel Wolfgang E Method of molding an elongate foamed resin article from expandable thermoplastic resin beads
US4756859A (en) * 1985-05-31 1988-07-12 Plastbau A.G. Method for manufacturing elements of expanded synthetic material having layers of particularly high strength and a plant for implementing said method
EP0295587A2 (en) * 1987-06-16 1988-12-21 André Klein Improvements in or relating to structures comprising longitudinally juxtaposed slats
DE102011107964A1 (en) * 2011-07-20 2013-01-24 Kurtz Gmbh Device for manufacturing foamed endless blocks made of expandable plastic particles in mold chamber, has open front-sided outlet opening and piston-shaped wall that is movable in mold chamber

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1470412A (en) * 1966-01-13 1967-02-24 Fresse S A Method and device for the manufacture of bodies with a cellular structure of indefinite length in expanded thermoplastic material
US3545042A (en) * 1968-11-08 1970-12-08 Continental Oil Co Apparatus for continuous molding
US3594461A (en) * 1969-01-21 1971-07-20 Grace W R & Co Method and apparatus for continuously molding sheets from expandable polymeric materials
CH527054A (en) * 1969-12-03 1972-08-31 Confido Treuhand Und Revisions Expanded polystyrene block continuous mfr - by forming and advancing successive segments

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1470412A (en) * 1966-01-13 1967-02-24 Fresse S A Method and device for the manufacture of bodies with a cellular structure of indefinite length in expanded thermoplastic material
US3545042A (en) * 1968-11-08 1970-12-08 Continental Oil Co Apparatus for continuous molding
US3594461A (en) * 1969-01-21 1971-07-20 Grace W R & Co Method and apparatus for continuously molding sheets from expandable polymeric materials
CH527054A (en) * 1969-12-03 1972-08-31 Confido Treuhand Und Revisions Expanded polystyrene block continuous mfr - by forming and advancing successive segments

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2543485A1 (en) * 1983-03-30 1984-10-05 Schedel Wolfgang Process and apparatus for continuously moulding elongate articles from an expandable plastic
US4539167A (en) * 1983-04-05 1985-09-03 Schedel Wolfgang E Method of molding an elongate foamed resin article from expandable thermoplastic resin beads
US4756859A (en) * 1985-05-31 1988-07-12 Plastbau A.G. Method for manufacturing elements of expanded synthetic material having layers of particularly high strength and a plant for implementing said method
EP0295587A2 (en) * 1987-06-16 1988-12-21 André Klein Improvements in or relating to structures comprising longitudinally juxtaposed slats
EP0295587A3 (en) * 1987-06-16 1989-03-29 André Klein Improvements in or relating to structures comprising longitudinally juxtaposed slats
US4961895A (en) * 1987-06-16 1990-10-09 Andre Klein Process and apparatus for molding structures comprising longitudinally juxtaposed slats
DE102011107964A1 (en) * 2011-07-20 2013-01-24 Kurtz Gmbh Device for manufacturing foamed endless blocks made of expandable plastic particles in mold chamber, has open front-sided outlet opening and piston-shaped wall that is movable in mold chamber
DE102011107964B4 (en) * 2011-07-20 2017-08-31 Kurtz Gmbh Apparatus and method for producing foamed endless blocks

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