FR2468455A1 - Elastic moulds which dilate in vacuum chamber - to release cast mouldings, to cast cosmetic pastes etc. with unblemished surfaces - Google Patents

Elastic moulds which dilate in vacuum chamber - to release cast mouldings, to cast cosmetic pastes etc. with unblemished surfaces Download PDF

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Publication number
FR2468455A1
FR2468455A1 FR7927379A FR7927379A FR2468455A1 FR 2468455 A1 FR2468455 A1 FR 2468455A1 FR 7927379 A FR7927379 A FR 7927379A FR 7927379 A FR7927379 A FR 7927379A FR 2468455 A1 FR2468455 A1 FR 2468455A1
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Prior art keywords
matrix
chamber
product
wall
cast
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FR2468455B3 (en
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Classifications

    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23G—COCOA; COCOA PRODUCTS, e.g. CHOCOLATE; SUBSTITUTES FOR COCOA OR COCOA PRODUCTS; CONFECTIONERY; CHEWING GUM; ICE-CREAM; PREPARATION THEREOF
    • A23G3/00—Sweetmeats; Confectionery; Marzipan; Coated or filled products
    • A23G3/02—Apparatus specially adapted for manufacture or treatment of sweetmeats or confectionery; Accessories therefor
    • A23G3/0236—Shaping of liquid, paste, powder; Manufacture of moulded articles, e.g. modelling, moulding, calendering
    • A23G3/0252—Apparatus in which the material is shaped at least partially in a mould, in the hollows of a surface, a drum, an endless band, or by a drop-by-drop casting or dispensing of the material on a surface, e.g. injection moulding, transfer moulding
    • A23G3/0284—Removing articles from the mould; Associated manipulation
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23G—COCOA; COCOA PRODUCTS, e.g. CHOCOLATE; SUBSTITUTES FOR COCOA OR COCOA PRODUCTS; CONFECTIONERY; CHEWING GUM; ICE-CREAM; PREPARATION THEREOF
    • A23G3/00—Sweetmeats; Confectionery; Marzipan; Coated or filled products
    • A23G3/02—Apparatus specially adapted for manufacture or treatment of sweetmeats or confectionery; Accessories therefor
    • A23G3/0236—Shaping of liquid, paste, powder; Manufacture of moulded articles, e.g. modelling, moulding, calendering
    • A23G3/0252—Apparatus in which the material is shaped at least partially in a mould, in the hollows of a surface, a drum, an endless band, or by a drop-by-drop casting or dispensing of the material on a surface, e.g. injection moulding, transfer moulding
    • A23G3/0268—Moulds
    • A23G3/0273—Moulds of plastic or elastomeric material, or plastic or elastomer coated moulds
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D40/00—Casings or accessories specially adapted for storing or handling solid or pasty toiletry or cosmetic substances, e.g. shaving soaps or lipsticks
    • A45D40/16—Refill sticks; Moulding devices for producing sticks
    • 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
    • B29C33/44—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles
    • B29C33/48—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles with means for collapsing or disassembling
    • B29C33/50—Moulds or cores; Details thereof or accessories therefor with means for, or specially constructed to facilitate, the removal of articles, e.g. of undercut articles with means for collapsing or disassembling elastic or flexible
    • 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
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/02—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor 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
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/06—Rods, e.g. connecting rods, rails, stakes

Abstract

Tool for producing cast mouldings without any surface blemishes comprises a hollow casing which can be evacuated to distend an elastic pocket used for the mould cavity. Elastic pocket may be supported between a pair of solid blocks which can separate within the evacuated chamber to allow the pocket to dilate for moulding release. The casing may be pressurised to invert the pocket so that it projects from the mould mouth for ease of cleaning. Used for producing moulds from fragile materials, esp. cosmetic pastes, to provide a smooth surface finish, since no sliding occurs at the casting/mould interface, esp. for producing mouldings requiring an undercut without requiring multi-piece moulds with associated parting lines in the mould wall surface.

Description

PROCEDE DE MOULAGE DE PRODUITS FRAGILES A PRESENTATION SOIGNEE ET DE
FORMES NOUVELLES,ET DISPOSITIF POUR SA MISE EN OEUVRE.PROCESS FOR MOLDING FRAGILE PRODUCTS WITH CAREFUL PRESENTATION AND
NEW FORMS, AND DEVICE FOR IMPLEMENTING SAME.

L'invention concerne un procédé de moulage pour produits coulés en phase liquide ou pateuse et faisant prise avant démoulage,par refroi dissement par exemple.The invention relates to a molding process for products cast in the liquid or pasty phase and setting before demolding, for example by cooling.

La pharmacie et la cosmétologie sont par exemple, des domaines d'utilisation de produits vendus à l'état pateux. On peut citer les batons de rouge à lèvres, les batons de déodorant, les suppositoires. Ces produits, et plus particulièrement ceux destinés à la cosmétologie, doivent avoir une présentation très soignée et, par exemple, être lisses et brillants.Pharmacy and cosmetology are, for example, fields of use of products sold in a pasty state. These include lipstick sticks, deodorant sticks, suppositories. These products, and more particularly those intended for cosmetology, must have a very neat presentation and, for example, be smooth and shiny.

Pour mouler ces produits, on utilisait jusqu'à présent des moules métalliques de type connu tels que: *des moules multiempreintes ouvrant sur un plan de joint, *des moules monoempreinte,non ouvrant,à forte dépouille et avec un
orifice d'éjection du produit par air comprimé.To mold these products, metal molds of known type have been used until now, such as: * multi-cavity molds opening on a parting line, * single-cavity molds, non-opening, with a large clearance and with a
product ejection port by compressed air.

des blisters rigides en matière plastique,retirés au moment de l'emploi du produit.rigid plastic blisters, removed when using the product.

Ces procédés de type connu présentent des difficultés d'obtention et l'inconvénient de délivrer un produit sur lequel se trouve une légère bavure à l'emplacement du plan de joint des demi-coquilles.These known type methods present difficulties in obtaining and the drawback of delivering a product on which there is a slight burr at the location of the joint plane of the half-shells.

Ce procédé connu présente également l'inconvénient de laisser des traces de piqure sur le produit et, souvent, d'en arracher des plaques au démoulage.This known process also has the disadvantage of leaving marks of sting on the product and, often, of tearing plates from it when it is removed from the mold.

Un autre inconvénient consécutif à l'emploi de ce procédé est de nécessiter un polissage ultérieur du produit fini pour améliorer sa presentation, en faisant disparaître les marques précédemment citées.Another drawback resulting from the use of this process is that it requires subsequent polishing of the finished product to improve its presentation, by making the previously mentioned marks disappear.

On estime que 70 % des produits coulés par le procédé connu devaient être rejetés ou recyclés, ce qui est très couteux. It is estimated that 70% of the products poured by the known process had to be rejected or recycled, which is very expensive.

Un autre inconvénient de ce procédé connu est de limiter l'éventail des formes qu'il est possible d'obtenir, du fait de contraintes techniques telles que la nécessité d'une dépouille relativement importante.Another drawback of this known method is to limit the range of shapes that it is possible to obtain, due to technical constraints such as the need for a relatively large draft.

Pour pallier à ces inconvénients, le procédé selon l'invention consiste à couler le produit dans une matrice souple.To overcome these drawbacks, the method according to the invention consists in casting the product in a flexible matrix.

Cette matrice souple présente au repos la forme exacte de l'objet à mouler. Cette matrice est de préférence constituée d'un élastomère compatible avec l'état et les caractéristiques du produit.This flexible matrix has at rest the exact shape of the object to be molded. This matrix preferably consists of an elastomer compatible with the condition and the characteristics of the product.

Le démoulage de l'objet ainsi coulé s'opère en appliquant le vide à l'extérieur de la matrice, provoquant ainsi sa déformation par gonflement, et un décollage du produit, la matrice se décollant en tous points perpendiculairement à l'objet moulé.The release of the object thus cast takes place by applying the vacuum to the outside of the matrix, thereby causing it to deform by swelling, and the product peeling off, the matrix peeling off at all points perpendicular to the molded object.

On comprend que l'on obtient ainsi un démoulage très aisé et ne lais sant aucune trace sur l'objet démoulé.It is understood that a very easy release is thus obtained and leaving no trace on the object removed from the mold.

Selon une autre caractéristique du procédé,la matrice peut avoir une forme quelconque et plus particulièrement cylindrique, ou présentant une forme quelconque éventuellement en contre-dépouille.According to another characteristic of the process, the matrix can have any shape and more particularly cylindrical, or having any shape possibly undercut.

De même la matrice peut-être ouverte à une éxtrémité ou comporter un orifice à chacune de ses éxtrémités, l'un pour la coulée,l'autre pour le démoulage.Similarly, the matrix may be open at one end or have an orifice at each of its ends, one for casting, the other for demolding.

Selon encore une autre caractéristique du procédé, on applique sur la matrice, après démoulage, une pression destinée à la retourner afin de permettre l'examen de sa paroi au contact du produit et son nettoyage.According to yet another characteristic of the process, a pressure is applied to the matrix, after demolding, intended to turn it over in order to allow the examination of its wall in contact with the product and its cleaning.

De même cette possibilité d'appliquer successivement et rapidement vide et pression sur la paroi externe de la matrice,permet par l'obtention de mouvements péristaltiques de la paroi,de faciliter la mise en place du produit pendant la coulée.Likewise, this possibility of successively and rapidly applying vacuum and pressure to the external wall of the matrix makes it possible, by obtaining peristaltic movements of the wall, to facilitate the positioning of the product during casting.

Les avantages du procédé selon l'invention sont les suivants
On peut travailler sans dépouille, sans aucun glissement au démoulage, ce qui permet une amélioration considérable de l'état de la surface des produits fragiles.The advantages of the process according to the invention are as follows:
We can work without draft, without any slipping from the release, which allows a considerable improvement in the condition of the surface of fragile products.

On peut obtenir de ce fait des formes nouvelles non réalisables avec le procédé antérieurement connu.It is therefore possible to obtain new forms which cannot be produced with the previously known method.

L'inertie thermique du moule est réduite à son minimum ce qui permet un gain de temps et de productivité très important. Ce procédé donne une qualité de présentation exceptionnelle des produits finis.The thermal inertia of the mold is reduced to its minimum which saves time and greatly increases productivity. This process gives an exceptional quality of presentation of the finished products.

Ce procédé est facilement automatisable.This process is easily automated.

Les dessins annexés et donnés à titre d'exemple non limitatifs,permettront de mieux comprendre la présente invention.The appended drawings, given by way of nonlimiting example, will allow a better understanding of the present invention.

La figure 1, représente une vue en coupe d'une chambre à pression et dépression dans laquelle se trouve une matrice souple contenant le produit à mouler.Figure 1 shows a sectional view of a pressure and vacuum chamber in which there is a flexible matrix containing the product to be molded.

La figure 2 est une vue en coupe d'une chambre à pression et dépression,dans laquelle on applique le vide, ce qui permet le démoulage du produit coulé dans la matrice souple, par décollement de celle-ci du dit produit,sous l'effet du vide.Figure 2 is a sectional view of a pressure and vacuum chamber, in which the vacuum is applied, which allows the release of the product poured into the flexible matrix, by detachment thereof from said product, under the vacuum effect.

La figure 3 est une vue en coupe d'une chambre à pression et dépression, dans laquelle on introduit une pression ayant pour effet de retourner la matrice souple, en la chassant à l'extérieur de la chambre pour permettre son nettoyage.Figure 3 is a sectional view of a pressure and vacuum chamber, in which a pressure is introduced having the effect of inverting the flexible matrix, driving it out of the chamber to allow its cleaning.

La figure 4 est une vue en coupe d'une chambre à pression et dépres sion pouvant recevoir une matrice souple de moulage comportant un orifice à chacune de ses extrémités.Figure 4 is a sectional view of a pressure and vacuum chamber capable of receiving a flexible molding die having an orifice at each of its ends.

La figure 5 est une vue en coupe d'une chambre à pression et dépression,dans laquelle la matrice souple de moulage est entourée par deux demi coquilles rigides élaborées à partir d'une matière poreuse.Figure 5 is a sectional view of a pressure and vacuum chamber, in which the flexible molding die is surrounded by two rigid half-shells produced from a porous material.

La figure 6 est une vue de dessus selon la coupe AA de la figure 5.FIG. 6 is a top view along section AA of FIG. 5.

On a représenté sur la figure 1 une chambre à pression et dépression 1 a l'intérieur de laquelle pend une matrice souple 2 fixée de façon étanche autour d'un orifice 3 situé à la partie supérieure de la chambre 1.FIG. 1 shows a pressure and vacuum chamber 1 inside which hangs a flexible matrix 2 fixed in leaktight manner around an orifice 3 located at the upper part of the chamber 1.

Un orifice 4 pratiqué dans une paroi de la chambre 1,permet d'établir ou de supprimer une pression autour de la paroi externe 5 de la matrice 2.Le produit 6 est coulé dans la matrice 2.An orifice 4 formed in a wall of the chamber 1 makes it possible to establish or remove a pressure around the external wall 5 of the matrix 2. The product 6 is poured into the matrix 2.

On a représenté sur la figure 2 une chambre l,dans laquelle on fait le vide par l'orifice 4,ce qui a pour effet de décoller la matrice 2 du produit 6.FIG. 2 shows a chamber l, in which a vacuum is created through the orifice 4, which has the effect of removing the matrix 2 from the product 6.

On a représenté sur la figure 3 une chambre 1" dans laquelle on introduit une pression par l'orifice 4,ayant pour effet de retourner la matrice souple 2 a l'extérieur de la chambre 1,permettant ainsi le nettoyage de sa paroi interne 7.FIG. 3 shows a chamber 1 "into which pressure is introduced through the orifice 4, having the effect of turning the flexible matrix 2 outside of the chamber 1, thus allowing the cleaning of its internal wall 7 .

On a représenté sur la figure 4 une chambre 1,laquelle est traversée de part en part par une matrice souple 8 comportant une ouverture à chacune de ses deux extrémités.On peut procéder à la coulée par l'ouverture 9.On fait ensuite le vide dans la chambre 1,parl'orifice 4, ce qui a pour effet de dilater la matrice souple 8,permettant le démoulage du produit 6 qui est alors extrait de la matrice par l'ouverture 10.La fixation de la matrice 8 à la chambre l est étanche au niveau des ouvertures 9 et 10.la déformation de la matrice 8,permettant le démoulage du produit 6,est possible grace aux évidements 11 et 12 pratiqués dans la chambre 1 au niveau des ouvertures 9 et 10.There is shown in Figure 4 a chamber 1, which is traversed right through by a flexible matrix 8 having an opening at each of its two ends. We can proceed to casting through the opening 9.We then vacuum in chamber 1, par'orifice 4, which has the effect of expanding the flexible matrix 8, allowing the release of the product 6 which is then extracted from the matrix by the opening 10. The attachment of the matrix 8 to the chamber it is sealed at the level of the openings 9 and 10.the deformation of the matrix 8, allowing the product 6 to be removed from the mold, is possible thanks to the recesses 11 and 12 made in the chamber 1 at the level of the openings 9 and 10.

On a représenté sur la figure 5 une chambre 1,dans laquelle pend une matrice 13 ayant été remplie par coulée du produit 6.Pour permettre l'obtention d'une forme en contre dépouille du produit 6,la matrice 13 est entourée de deux demi-coquilles 14 et 15. There is shown in Figure 5 a chamber 1, in which hangs a matrix 13 having been filled by pouring the product 6. To allow obtaining an undercut shape of the product 6, the matrix 13 is surrounded by two half -shells 14 and 15.

Ces deux demi-coquilles 14 et 15 sont appliquées l'une contre l'autre sur un plan de joint 16 qui peut être,mais non obligatoirement, le plan de symétrie de la matrice souple 13.La forme intérieure de ces deux demi-coquilles est celle de la forme extérieure de la matrice 13 qu'elle maintient.These two half-shells 14 and 15 are applied one against the other on a joint plane 16 which can be, but not necessarily, the plane of symmetry of the flexible matrix 13. The internal shape of these two half-shells is that of the external shape of the matrix 13 which it maintains.

Elles sont de préférence réalisées dans un produit poreux,qui peut être par exemple du bronze,matériau connu pour sa haute conductivité thermique,ce qui facilite la dilatation de la matrice 13. They are preferably made from a porous product, which can for example be bronze, a material known for its high thermal conductivity, which facilitates the expansion of the matrix 13.

Aprés coulée du produit 6 et sa solidification,on fait le vide,ce qui a pour effet de dilater la matrice 13, qui repousse les demicoquilles 14 et 15. After pouring the product 6 and solidifying it, a vacuum is created, which has the effect of expanding the matrix 13, which repels the half-shells 14 and 15.

Celles ci peuvent également être écartées par un dispositif non représenté, qui servira également à les rapprocher avant la coulée suivante.These can also be removed by a device not shown, which will also be used to bring them together before the next casting.

La figure 6 est une vue du dispositif représenté sur la figure 5, selon la coupe AA, aprés que l'on ait fait le vide dans la chambre 1.FIG. 6 is a view of the device shown in FIG. 5, according to section AA, after a vacuum has been created in chamber 1.

La matrice 13 est décollée du produit 6 et les deux demi-coquilles 14 et 15 sont écartées,ce qui permet le démoulage et l'extraction du produit 6. The matrix 13 is detached from the product 6 and the two half-shells 14 and 15 are separated, which allows the product 6 to be removed from the mold and extracted.

Claims (11)

REVENDICATIONS 10 Procédé pour le moulage d'objets fragiles à présentation soignée tels que batons de produits cosmétiques, suppositoires, produits alimentaires ou analogues, caractérisé en ce qu'il comporte les phases successives suivantes a- On introduit, à l'état pâteux, le produit à mouler dans une matrice à paroi souple et élastiquement déformable.10 Process for molding fragile objects with careful presentation such as sticks for cosmetic products, suppositories, food products or the like, characterized in that it comprises the following successive phases a- The product is introduced in a pasty state to be molded in a matrix with a flexible and elastically deformable wall. b- On laisse solidifier le produit, c- On crée une dépression autour de la paroi extérieure de la matrice, ce qui provoque sa dilatation et la décolle de l'objet moulé, d- On extrait l'objet moulé hors de la matrice dilatée, e- On fait cesser la dépression pour laisser la matrice revenir à ses forme et dimensions initiales, si bien qu'elle est utilisable pour une nouvelle coulée.b- The product is allowed to solidify, c- A vacuum is created around the outer wall of the matrix, which causes it to expand and peel off from the molded object, d- The molded object is extracted from the expanded matrix , e- The depression is stopped to let the matrix return to its original shape and dimensions, so that it can be used for a new casting. 20 Procédé selon la revendication 1, caractérisé en ce qu'on crée une surpression autour de la paroi extérieure de la matrice, ce qui provoque son retournement pour nettoyage de la paroi au contact du produit précédemment coulé.20 Method according to claim 1, characterized in that an overpressure is created around the outer wall of the matrix, which causes it to turn over for cleaning the wall in contact with the previously poured product. 30 Dispositif pour la mise en oeuvre du procédé selon l'une quelconque des revendications 1 et 2, caractérisé en ce qu'il comporte une matrice souple placée dans une chambre fermée de telle sorte que ses bords libres soient fixés de façon étanche autour d'ouvertures correspondantes dans les parois de cette chambre.30 Device for implementing the method according to any one of claims 1 and 2, characterized in that it comprises a flexible matrix placed in a closed chamber so that its free edges are fixed in a sealed manner around corresponding openings in the walls of this room. 40 Dispositif selon la revendication 3, caractérisé en ce que la matrice comporte un seul bord libre et est pendue dans la chambre.40 Device according to claim 3, characterized in that the matrix has a single free edge and is hung in the chamber. 50 Dispositif selon la revendication 3, caractérisé en ce que la matrice souple comporte deux bords libres fixés à deux parois opposées de la chambre.50 Device according to claim 3, characterized in that the flexible matrix has two free edges fixed to two opposite walls of the chamber. 60 Dispositif selon la revendication 3, caractérisé en ce que les ouvertures pratiquées dans les parois de la chambre pour le passage de la matrice ont une section sensiblement supérieure à celle de la matrice à cet endroit.60 Device according to claim 3, characterized in that the openings made in the walls of the chamber for the passage of the matrix have a section substantially greater than that of the matrix at this location. 70 Dispositif selon l'une quelconque des revendications précédentes caractérisé en ce que deux demi-coquilles creuses accolées formant une cavité ayant la forme de la paroi extérieure de la matrice sont placées dans la chambre et entourent la matrice pendant la coulée.70 Device according to any one of the preceding claims, characterized in that two adjoining hollow half-shells forming a cavity having the shape of the external wall of the matrix are placed in the chamber and surround the matrix during casting. 80 Dispositif selon la revendication 8, caractérisé en ce que les coquilles sont en matériau poreux. 80 Device according to claim 8, characterized in that the shells are made of porous material. 90 Dispositif selon l'une quelconque des revendications précédentes caractérisé en ce qu'un dispositif permet de créer un vide partiel ou une surpression dans la chambre fermée entourant la matrice.90 Device according to any one of the preceding claims, characterized in that a device makes it possible to create a partial vacuum or an overpressure in the closed chamber surrounding the matrix. 100 Objet moulé par la mise en oeuvre du procédé suivant l'une quelconque des revendications 1 et 2, caractérisé en ce que sa forme extérieure comporte des parties en contre dépouille.100 An object molded by the implementation of the method according to any one of claims 1 and 2, characterized in that its external shape comprises undercut parts. 110 Objet moulé par la mise en oeuvre du procédé suivant l'une quelconque des revendications 1 à 2, caractérisé en ce que sa forme extérieure -ne comporte aucune partie en contre dépouille. 110 Object molded by the implementation of the method according to any one of claims 1 to 2, characterized in that its external shape - has no undercut part.
FR7927379A 1979-10-30 1979-10-30 Elastic moulds which dilate in vacuum chamber - to release cast mouldings, to cast cosmetic pastes etc. with unblemished surfaces Granted FR2468455A1 (en)

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Application Number Priority Date Filing Date Title
FR7927379A FR2468455A1 (en) 1979-10-30 1979-10-30 Elastic moulds which dilate in vacuum chamber - to release cast mouldings, to cast cosmetic pastes etc. with unblemished surfaces

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Application Number Priority Date Filing Date Title
FR7927379A FR2468455A1 (en) 1979-10-30 1979-10-30 Elastic moulds which dilate in vacuum chamber - to release cast mouldings, to cast cosmetic pastes etc. with unblemished surfaces

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FR2468455A1 true FR2468455A1 (en) 1981-05-08
FR2468455B3 FR2468455B3 (en) 1982-07-16

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62134707U (en) * 1985-10-19 1987-08-25
EP0242059A2 (en) * 1986-03-20 1987-10-21 Asahi Denka Kogyo Kabushiki Kaisha Apparatus for producing cast products
EP0299113A2 (en) * 1987-06-13 1989-01-18 Asahi Denka Kogyo Kabushiki Kaisha Apparatus for producing cast products
EP0395756A1 (en) * 1987-06-13 1990-11-07 Asahi Denka Kogyo Kabushiki Kaisha Machine for manufacturing filled up molded products
EP0429853A2 (en) * 1989-10-27 1991-06-05 Okamoto Industries, Inc. Elastic forming die, method of manufacturing the same, and process for moulding a product by using the elastic forming die
EP0503612A1 (en) * 1991-03-14 1992-09-16 Akutagawa Confectionary Co., Ltd. Elastic mold and method for producing molded product using such mold
EP0549999A1 (en) * 1991-12-27 1993-07-07 Akutagawa Confectionary Co., Ltd. Method and apparatus for molding decorative product
EP0581243A1 (en) * 1992-07-31 1994-02-02 Asahi Denka Kogyo Kabushiki Kaisha Method of manufacturing hollow molded articles
FR2720609A1 (en) * 1994-06-07 1995-12-08 Lagrost Sa Bureau Etudes Device for the casting and demolding of objects made of material with a low melting point.
FR2729278A1 (en) * 1995-01-16 1996-07-19 Lenoir Et Compagnie Ets Method of shaping lipstick
FR2789623A1 (en) * 1999-02-11 2000-08-18 Patrick Bolzinger Molding equipment employs pressurized, liquid-filled shell halves with resilient membranes in parting plane, to embrace model closely before solidifying liquid to form mold for short production runs
WO2001013758A1 (en) * 1999-08-20 2001-03-01 Unilever Plc Mechanical device and process for forming a dome on a cosmetic stick
WO2005099988A1 (en) * 2004-04-15 2005-10-27 Weckerle Gmbh Demoulding station
EP3669700A1 (en) * 2018-12-21 2020-06-24 Gotha cosmetics S.r.l. Mould for cosmetic products and its use in a process for moulding such products

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0532264Y2 (en) * 1985-10-19 1993-08-18
JPS62134707U (en) * 1985-10-19 1987-08-25
EP0242059A2 (en) * 1986-03-20 1987-10-21 Asahi Denka Kogyo Kabushiki Kaisha Apparatus for producing cast products
EP0242059A3 (en) * 1986-03-20 1989-01-18 Yoshiyuki Corporation Apparatus for producing cast products
EP0299113A2 (en) * 1987-06-13 1989-01-18 Asahi Denka Kogyo Kabushiki Kaisha Apparatus for producing cast products
EP0299113A3 (en) * 1987-06-13 1989-03-15 Asahi Denka Kogyo Kabushiki Kaisha Apparatus for producing cast products
EP0395756A1 (en) * 1987-06-13 1990-11-07 Asahi Denka Kogyo Kabushiki Kaisha Machine for manufacturing filled up molded products
EP0395756A4 (en) * 1987-06-13 1991-06-26 Asahi Denka Kogyo Kabushiki Kaisha Machine for manufacturing filled up molded products
EP0429853A2 (en) * 1989-10-27 1991-06-05 Okamoto Industries, Inc. Elastic forming die, method of manufacturing the same, and process for moulding a product by using the elastic forming die
EP0429853A3 (en) * 1989-10-27 1991-09-25 Okamoto Industries, Inc. Elastic forming die, molding method, and device for forming molded products
EP0503612A1 (en) * 1991-03-14 1992-09-16 Akutagawa Confectionary Co., Ltd. Elastic mold and method for producing molded product using such mold
EP0549999A1 (en) * 1991-12-27 1993-07-07 Akutagawa Confectionary Co., Ltd. Method and apparatus for molding decorative product
EP0581243A1 (en) * 1992-07-31 1994-02-02 Asahi Denka Kogyo Kabushiki Kaisha Method of manufacturing hollow molded articles
US5500178A (en) * 1992-07-31 1996-03-19 Asahi Denka Kogyo Kabushikikaisya Method of manufacturing hollow molded articles
FR2720609A1 (en) * 1994-06-07 1995-12-08 Lagrost Sa Bureau Etudes Device for the casting and demolding of objects made of material with a low melting point.
EP0686468A1 (en) * 1994-06-07 1995-12-13 BUREAU D'ETUDES LAGROST, Société Anonyme dite : Method and apparatus for the moulding of objects using a material having a low melting point
FR2729278A1 (en) * 1995-01-16 1996-07-19 Lenoir Et Compagnie Ets Method of shaping lipstick
FR2789623A1 (en) * 1999-02-11 2000-08-18 Patrick Bolzinger Molding equipment employs pressurized, liquid-filled shell halves with resilient membranes in parting plane, to embrace model closely before solidifying liquid to form mold for short production runs
WO2001013758A1 (en) * 1999-08-20 2001-03-01 Unilever Plc Mechanical device and process for forming a dome on a cosmetic stick
WO2005099988A1 (en) * 2004-04-15 2005-10-27 Weckerle Gmbh Demoulding station
US7833004B2 (en) 2004-04-15 2010-11-16 Weckerle Gmbh Demoulding station
EP3669700A1 (en) * 2018-12-21 2020-06-24 Gotha cosmetics S.r.l. Mould for cosmetic products and its use in a process for moulding such products

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