FR2622142A1 - Method and mould for manufacturing components made of rubber having two or more colours - Google Patents

Method and mould for manufacturing components made of rubber having two or more colours Download PDF

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Publication number
FR2622142A1
FR2622142A1 FR8800965A FR8800965A FR2622142A1 FR 2622142 A1 FR2622142 A1 FR 2622142A1 FR 8800965 A FR8800965 A FR 8800965A FR 8800965 A FR8800965 A FR 8800965A FR 2622142 A1 FR2622142 A1 FR 2622142A1
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France
Prior art keywords
mold
cavities
portions
plate
gum
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Granted
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FR8800965A
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French (fr)
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FR2622142B1 (en
Inventor
Jose Maria Izquieta Anaut
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SEMIC
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SEMIC
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Expired - Fee Related 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/10—Isostatic pressing, i.e. using non-rigid pressure-exerting members against rigid parts or dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/14—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles in several steps
    • B29C43/145—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles in several steps for making multicoloured articles

Abstract

According to the method, the starting point is to mould and then vulcanise the portion or portions having various colours by virtue of the coloration of the virgin rubber gum injected into the cavities 5 of the mould 1 which reproduce the said portions; next, in a second step, the entire mould is filled using the virgin gum having the colour corresponding to that of the body of the component to be obtained. The corresponding mould 1 includes, on its inner face, cavities 5 which reproduce the configuration of the projecting portions having various colours and it is fitted with a removable intermediate plate 4 fitted with projecting elements 6, 7 which are intended to bear, under pressure, on the said cavities.

Description

La présente invention concerne un procédé de fabrication de pièces en caoutchouc ayant deux couleurs ou plus et elle a trait plus spécialement à la confection d'articles en caoutchouc de couleur uniforme, munis sur leur surface de portions en saillie de différentes couleurs. The present invention relates to a method of manufacturing rubber parts having two or more colors and relates more particularly to the manufacture of rubber articles of uniform color, provided on their surface with protruding portions of different colors.

L'invention a trait également à un moule pour la mise en oeuvre du procédé, ce moule étant du type comportant un corps déterminé par la chambre de moulage de configuration identique à celle de la pièce à mouler, ainsi qu'un couvercle ajustable sur ce corps et apte à fermer ladite chambre de moulage. The invention also relates to a mold for implementing the method, this mold being of the type comprising a body determined by the molding chamber of configuration identical to that of the part to be molded, as well as an adjustable cover on this body and able to close said molding chamber.

Jusqu a ce jour, pour confectionner des pièces en caoutchouc bi ou multicolores au moyen de moules du type susvisé, il s'avère nécessaire de doter le moule, sur la face interne de la chambre de moulage, de nervures ou petites cloisons destinées à délimiter des contours égaux pour les parties de différentes couleurs que l'on désire voir formées sur la pièce. Ces nervures ou cloisons procurent dans la pièce finie des canaux de séparation entre les zones de différentes couleurs, ce qui rend impossible l'obtention d'une surface totalement continue. Until now, to make bi or multicolored rubber parts using molds of the aforementioned type, it turns out to be necessary to provide the mold, on the internal face of the molding chamber, with ribs or small partitions intended to delimit equal contours for the parts of different colors that you want to see formed on the piece. These ribs or partitions provide in the finished part separation channels between the zones of different colors, which makes it impossible to obtain a completely continuous surface.

L'un des buts de l'invention est de proposer une technique et un moule permettant d'obtenir des articles en caoutchouc sur la surface desquels existent des parties de différentes couleurs par rapport à la pièce de base, ces parties se trouvant légèrement en saillie par rapport à la surface, ceci sans que l'on ait à prévoir des canaux ou rainures de séparation entre de telles parties et la pièce à obtenir, tout en réalisant ainsi une parfaite continuité dans la vision superficielle de l'ensemble. One of the objects of the invention is to propose a technique and a mold making it possible to obtain rubber articles on the surface of which parts of different colors exist relative to the base part, these parts being slightly projecting relative to the surface, this without having to provide channels or grooves for separation between such parts and the part to be obtained, while thus achieving perfect continuity in the surface vision of the assembly.

Pour parvenir à ce but conforme à l'invention, on met en oeuvre un moule comprenant un corps et un couvercle dans lequel il se forme, sur la face interne de la chambre du moule, autant de cavités que de portions que l'on désire obtenir en différentes couleurs pour la pièce en cause. Ces cavités sont de dimensions et configurations égales à celles de la portion à obtenir. En outre, le moule comporte une plaque amovible adaptable, au-dessous du couvercle de fermeture. Cette plaque est munie, sur sa face dirigée vers la chambre de moulage, de protubérances ou saillies disposées en face des cavités formées sur la face interne de la chambre de moulage et dont la face frontale libre a un pourtour supérieur à celui desdites cavités.En outre, les protubérances sont de hauteur telles que, lors de l'assemblage de la plaque sur le moule, ces proéminences exercent une pression sur le pourtour des cavités. To achieve this object according to the invention, a mold is used comprising a body and a cover in which there are formed, on the internal face of the mold chamber, as many cavities as there are portions desired. obtain in different colors for the part in question. These cavities are of dimensions and configurations equal to those of the portion to be obtained. In addition, the mold has an adjustable removable plate, below the closure cover. This plate is provided, on its face directed towards the molding chamber, with protuberances or projections arranged opposite the cavities formed on the internal face of the molding chamber and the free front face of which has a circumference greater than that of said cavities. furthermore, the protuberances are of such height that, when the plate is assembled on the mold, these prominences exert pressure on the periphery of the cavities.

La plaque ainsi que le moule et son couvercle sont avantageusement de nature métallique tandis que les protubérances du couvercle peuvent être en un matériau différent, capable de supporter les pressions et températures de vulcanisation, mais d'une capacité de déformation élastique supérieure à celle de la plaque et du moule. Ainsi, en serrant le moule avec la plaque qui lui est associée, les protubérances peuvent absorber de légères déviations ou déréglages et permettre ainsi d'effectuer un serrage étanche de la cavité. The plate as well as the mold and its cover are advantageously of metallic nature while the protuberances of the cover can be made of a different material, capable of withstanding the pressures and temperatures of vulcanization, but with a capacity for elastic deformation greater than that of the plate and mold. Thus, by tightening the mold with the associated plate, the protrusions can absorb slight deviations or misadjustments and thus allow a tight tightening of the cavity to be carried out.

Pour procéder, selon l'invention, au moulage d'une pièce, on commence par remplir de gomme caoutchouc les cavités de la face interne du moule, cette gomme se trouvant de la même couleur que celle désirée pour les portions qui diffèreront en couleur du reste de la pièce. Puis on ferme l'ensemble en disposant la plaque amovible entre le corps du moule et le couvercle, ce qui comprime les protubérances de la plaque dans les cavités du moule, et l'on vulcanise ensuite la gomme. De cette façon, on obtient les portions désirées de la couleur de la pièce de base. To proceed, according to the invention, to the molding of a part, one begins by filling with rubber eraser the cavities of the internal face of the mold, this eraser being of the same color as that desired for the portions which will differ in color from the rest of the room. Then the assembly is closed by placing the removable plate between the body of the mold and the cover, which compresses the protuberances of the plate in the mold cavities, and the rubber is then vulcanized. In this way, the desired portions of the color of the basic part are obtained.

Ensuite on ouvre l'ensemble et l'on retire la plaque intermédiaire ainsi que l'excès de gomme utilisé pour remplir les cavités. Puis on remplit avec une gomme vierge de la nouvelle couleur qui correspond à la pièce à obtenir et l'on serre le moule uniquement avec son couvercle pour provoquer la vulcanisation, après quoi l'on ouvre le moule et extrait la pièce de caoutchouc finie. Le produit résultant consiste en un produit de deux couleurs ou plus sans qu'il existe entre ces dernières de canal ou fente de séparation. Then we open the assembly and we remove the intermediate plate and the excess rubber used to fill the cavities. Then we fill with a virgin rubber of the new color which corresponds to the part to be obtained and we tighten the mold only with its cover to cause vulcanization, after which we open the mold and extract the finished piece of rubber. The resulting product consists of a product of two or more colors without there being a channel or separation gap between them.

L'invention sera mieux comprise par une description plus détaillée d'un exemple de réalisation du moule, par référence aux dessins annexés qui illustrent les diverses phases du procédé selon l'invention au moyen du moule correspondant. Sur ces dessins - La figure 1 correspond à la vue en coupe d'un moule conforme à
l'invention, ses divers organes constitutifs étant séparés - La figure 2 est une vue du même type que la figure 1 mais avec
les trois éléments du moule accouplés entre eux - La figure 3 est une vue similaire à la figure 2 mais dans laquelle
on supprime la plaque intermédiaire.The invention will be better understood from a more detailed description of an example embodiment of the mold, with reference to the appended drawings which illustrate the various phases of the process according to the invention by means of the corresponding mold. In these drawings - Figure 1 corresponds to the sectional view of a mold conforming to
the invention, its various constituent parts being separate - Figure 2 is a view of the same type as Figure 1 but with
the three elements of the mold coupled together - Figure 3 is a view similar to Figure 2 but in which
we remove the intermediate plate.

Comme on peut le voir sur la figure 1, le moule de l'invention est constitué par un corps 1 comportant la cavité 2, un couvercle de fermeture 3 et une plaque intermédiaire 4. Ces trois composants sont de préférence réalisés en métal. As can be seen in FIG. 1, the mold of the invention consists of a body 1 comprising the cavity 2, a closure cover 3 and an intermediate plate 4. These three components are preferably made of metal.

La plaque intermédiaire 4 est munie, sur sa face orientée vers la cavité 2 du moule, de protubérances 6 qui possèdent une surface frontale libre 7 de pourtour légèrement supérieur à celui des cavités 5. Les protubérances 6 sont de nature telle que, lorsque la plaque intermédiaire 4 appuye sur le moule 1 -comme on peut le voir sur la figure 2- la paroi frontale 7 serre et s'appuye sur les cavités 5. The intermediate plate 4 is provided, on its face oriented towards the cavity 2 of the mold, with protrusions 6 which have a free front surface 7 of periphery slightly greater than that of the cavities 5. The protrusions 6 are of such a nature that, when the plate intermediate 4 presses on the mold 1 -as can be seen in FIG. 2- the front wall 7 clamps and rests on the cavities 5.

De préférence, les protubérances 6 sont en un matériau présentant un coefficient de déformation élastique légèrement supérieure à celle de la plaque 4 et de même composition que le moule. Preferably, the protrusions 6 are made of a material having a coefficient of elastic deformation slightly greater than that of the plate 4 and of the same composition as the mold.

Selon le mode opératoire décrit, pour obtenir une pièce de caoutchouc bi-ou multicolore, on procède au remplissage des cavités 5 par de la gomme vierge de couleur différente de celle dont le reste de la pièce sera formé. Puis on dispose la plaque 4 sur le moule 1 ainsi que le couvercle 3 en serrant ainsi le caoutchouc, comme cela est représenté sur la figure 2. Dans ces conditions, on procède à la vulcanisation de la gomme 8 introduite dans les cavités 5. Une fois cette vulcanisation effectuée, on retire le couvercle 3 et la plaque intermédiaire 4 ainsi que l'excès de gomme pouvant subsister dans la chambre du moule 2. According to the procedure described, to obtain a bi-colored or multicolored piece of rubber, the cavities 5 are filled with virgin rubber of a color different from that of which the rest of the part will be formed. Then the plate 4 is placed on the mold 1 as well as the cover 3, thus tightening the rubber, as shown in FIG. 2. Under these conditions, the vulcanization of the gum 8 introduced into the cavities is carried out. once this vulcanization has been carried out, the cover 3 and the intermediate plate 4 are removed, as well as the excess of rubber which may remain in the chamber of the mold 2.

Le processus terminé, on ouvre le moule pour obtenir la pièce 10 sur la figure 4 et qui présente sur sa face inférieure des couleurs différentes, l'une c#orrespondant au corps 9 de la pièce et l'autre aux autres couleurs correspondant à la portion 8, sans qu'il existe entre l'une ou l'autre de ces couleurs des canaux de séparation ou discontinuités.  The process finished, the mold is opened to obtain the part 10 in FIG. 4 and which has different colors on its underside, one c # corresponding to the body 9 of the part and the other to the other colors corresponding to the portion 8, without there being between one or the other of these colors separation channels or discontinuities.

Si, on le désire, les portions en saillies 8 peuvent être entourées d'une nervure ou d'un canal. Pour cela il suffit de doter le fond du moule 1, tout autour des cavités 5, d'un canal ou, respectivement, d'une nervure. If desired, the protruding portions 8 may be surrounded by a rib or a channel. For this, it suffices to provide the bottom of the mold 1, all around the cavities 5, with a channel or, respectively, with a rib.

Bien entendu, l'invention n'est pas limitée au mode de réalisation susdécrit et s'étend à tous les moyens techniques équivalents tels que inclus dans les revendications qui suivent.  Of course, the invention is not limited to the embodiment described above and extends to all equivalent technical means as included in the claims which follow.

Claims (4)

REVENDICATIONS 1. Procédé pour la fabrication de pièces de caoutchouc ayant deux ou plusieurs couleurs, notamment pour la confection d'articles comprenant un corps de couleur uniforme sur une face duquel on dispose des portions en saillie de différentes couleurs, au moyen d'un moule qui définit la configuration du corps et des portions susvisées, caractérisé en ce que, en une première étape, on procède au moulage de la ou des portions de coloration différente grâce à la coloration de la gomme vierge dans les cavités du moule reproduisant de telles portions puis en ce que l'on ferme ce moule en assurant la compression sur le matériau déposé sur les cavités dudit moule, pour la vulcanisation du matériau ; et en ce que l'on procède ensuite à l'ouverture du moule et à l'extraction de l'excès de matériau ; puis, en une seconde étape, on procède au remplissage dudit moule avec de la gomme vierge ce couleur correspondant au corps de la pièce à obtenir, en recouvrant les portions précédemment vulcanisées, en fermant de nouveau le moule puis en vulcanisant la gomme formée sur ledit corps. 1. Method for the production of rubber parts having two or more colors, in particular for making articles comprising a body of uniform color on one face of which there are projecting portions of different colors, by means of a mold which defines the configuration of the body and of the abovementioned portions, characterized in that, in a first step, the molding of the portion (s) of different coloring is effected by coloring the virgin gum in the mold cavities reproducing such portions then in that this mold is closed by ensuring compression on the material deposited on the cavities of said mold, for the vulcanization of the material; and in that one then proceeds to open the mold and extract the excess material; then, in a second step, the filling of said mold is carried out with virgin gum, this color corresponding to the body of the part to be obtained, by covering the previously vulcanized portions, by closing the mold again and then by vulcanizing the gum formed on said body. 2. Procédé selon la revendication 1, caractérisé en ce que, pour la première opération de vulcanisation, on dispose entre le moule et le couvercle de fermeture des éléments d'adjustage et de compression sur les cavités qui reproduisent les portions de différentes couleurs, ces éléments étant extraits avant l'introduction de la gomme qui formera le corps de la pièce à obtenir. 2. Method according to claim 1, characterized in that, for the first vulcanization operation, there are between the mold and the closure cover adjustment and compression elements on the cavities which reproduce the portions of different colors, these elements being extracted before the introduction of the gum which will form the body of the part to be obtained. 3. Moule pour la mise en oeuvre du procédé selon l'une quelconque des revendications 1 ou 2, caractérisé en ce qu'il présente sur sa face interne des cavités (5) qui reproduisent la configuration des portions en saillie de différentes couleurs de la pièce à obtenir ; en ce qu'il comporte une plaque amovible (4) accouplable au corps du moule (1), au-dessous du couvercle (3) de ce moule, et dimensionnée pour comprimer ledit moule ; ladite plaque (4) comportant sur sa face en regard de la face interne du moule des protubérances ou saillies (6, 7) faisant face aux cavités (5) du moule, ces protubérances ou éléments en saillie ayant une face frontale de dimensions légèrement supérieures au pourtour desdites cavités de façon à comprimer ces dernières.  3. Mold for the implementation of the method according to any one of claims 1 or 2, characterized in that it has on its internal face cavities (5) which reproduce the configuration of the projecting portions of different colors of the document to be obtained; in that it comprises a removable plate (4) which can be coupled to the body of the mold (1), below the cover (3) of this mold, and dimensioned to compress said mold; said plate (4) comprising on its face opposite the internal face of the mold protuberances or protrusions (6, 7) facing the cavities (5) of the mold, these protrusions or protruding elements having a front face of slightly larger dimensions around said cavities so as to compress the latter. 4. Moule selon la revendication 3, caractérisé en ce que les protubérances (6, 7) de la plaque amovible (4) du moule (1) sont en matériau différent de ladite plaque et possèdent une capacité de déformation élastique supérieure à celle de cette plaque.  4. Mold according to claim 3, characterized in that the protrusions (6, 7) of the removable plate (4) of the mold (1) are made of a material different from said plate and have a capacity for elastic deformation greater than that of this plate.
FR888800965A 1987-10-27 1988-01-28 PROCESS AND MOLD FOR THE MANUFACTURE OF RUBBER PARTS OF TWO AND MORE COLORS Expired - Fee Related FR2622142B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES8703066A ES2008296A6 (en) 1987-10-27 1987-10-27 Method and mould for manufacturing components made of rubber having two or more colours

Publications (2)

Publication Number Publication Date
FR2622142A1 true FR2622142A1 (en) 1989-04-28
FR2622142B1 FR2622142B1 (en) 1990-12-07

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FR888800965A Expired - Fee Related FR2622142B1 (en) 1987-10-27 1988-01-28 PROCESS AND MOLD FOR THE MANUFACTURE OF RUBBER PARTS OF TWO AND MORE COLORS

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ES (1) ES2008296A6 (en)
FR (1) FR2622142B1 (en)
IT (1) IT1219020B (en)
PT (1) PT87235B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108943550A (en) * 2017-05-17 2018-12-07 台光电子材料(昆山)有限公司 The method for manufacturing naval stores
GB2609909A (en) * 2021-08-09 2023-02-22 Matchstick Monkey Ltd Moulded infant product

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2187446A1 (en) * 1995-02-20 1996-08-29 Miguel Zubigaray Irazabal Process and machine for the fabrication of decorated vulcanized and polychrome mats, and mats thus obtained
ES2116877B1 (en) * 1995-02-20 1999-03-16 Zubigaray Irazabal Miguel PROCEDURE AND MACHINE FOR THE MANUFACTURE OF VULCANIZED, DECORATED AND POLYCHROME CARPETS.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2364388A (en) * 1942-09-01 1944-12-05 Patent Button Co Method of molding decorated plastic articles
GB965957A (en) * 1962-06-04 1964-08-06 David Atkin Moulded mats having areas of contrasting colour and method of making the same
FR2277659A1 (en) * 1972-12-04 1976-02-06 Swifts Of Exmouth Ltd PROCESS AND APPARATUS FOR COMPRESSION MOLDING OF A PLASTIC MATERIAL INCLUDING A COLORED EDGE
JPS58162311A (en) * 1982-03-23 1983-09-27 Ngk Spark Plug Co Ltd Forming method of corrugated rough surface

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2364388A (en) * 1942-09-01 1944-12-05 Patent Button Co Method of molding decorated plastic articles
GB965957A (en) * 1962-06-04 1964-08-06 David Atkin Moulded mats having areas of contrasting colour and method of making the same
FR2277659A1 (en) * 1972-12-04 1976-02-06 Swifts Of Exmouth Ltd PROCESS AND APPARATUS FOR COMPRESSION MOLDING OF A PLASTIC MATERIAL INCLUDING A COLORED EDGE
JPS58162311A (en) * 1982-03-23 1983-09-27 Ngk Spark Plug Co Ltd Forming method of corrugated rough surface

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 7, no. 287 (M-264)[1432], 21 décembre 1983; & JP-A-58 162 311 (NIPPON TOKUSHU TOGYO K.K.) 27-09-1983 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108943550A (en) * 2017-05-17 2018-12-07 台光电子材料(昆山)有限公司 The method for manufacturing naval stores
CN108943550B (en) * 2017-05-17 2020-11-13 台光电子材料(昆山)有限公司 Method for manufacturing resin product
GB2609909A (en) * 2021-08-09 2023-02-22 Matchstick Monkey Ltd Moulded infant product

Also Published As

Publication number Publication date
PT87235A (en) 1989-07-31
FR2622142B1 (en) 1990-12-07
IT8867109A0 (en) 1988-02-15
ES2008296A6 (en) 1989-07-16
IT1219020B (en) 1990-04-24
PT87235B (en) 1993-11-30

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