EP2000231A1 - Method for producing an object with a structured surface - Google Patents
Method for producing an object with a structured surface Download PDFInfo
- Publication number
- EP2000231A1 EP2000231A1 EP08156938A EP08156938A EP2000231A1 EP 2000231 A1 EP2000231 A1 EP 2000231A1 EP 08156938 A EP08156938 A EP 08156938A EP 08156938 A EP08156938 A EP 08156938A EP 2000231 A1 EP2000231 A1 EP 2000231A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- impression
- imprint
- making
- molding
- model
- 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.)
- Withdrawn
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 3
- 238000000034 method Methods 0.000 claims abstract description 25
- 238000000465 moulding Methods 0.000 claims abstract description 25
- 238000005266 casting Methods 0.000 claims abstract description 13
- 239000011505 plaster Substances 0.000 claims abstract description 13
- 238000005498 polishing Methods 0.000 claims abstract description 5
- 238000009877 rendering Methods 0.000 claims abstract description 5
- 229920001296 polysiloxane Polymers 0.000 claims description 13
- 239000004848 polyfunctional curative Substances 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 2
- 238000005238 degreasing Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract 4
- 229910052710 silicon Inorganic materials 0.000 abstract 4
- 239000010703 silicon Substances 0.000 abstract 4
- 239000002184 metal Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000033458 reproduction Effects 0.000 description 1
- 239000002210 silicon-based material Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
- B22C7/02—Lost patterns
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D25/00—Special casting characterised by the nature of the product
- B22D25/02—Special casting characterised by the nature of the product by its peculiarity of shape; of works of art
- B22D25/026—Casting jewelry articles
Definitions
- the present invention relates to the field of producing objects by molding and finds particularly advantageous applications in the field of jewelery.
- Molding techniques are already known for obtaining reproductions of existing objects. These techniques make it possible, from a mold that exactly reproduces an object, to produce a large number of identical pieces, for example by the technique known as casting or casting by lost wax.
- a first molding providing a negative of the object to be reproduced is made, from which a model curve is produced representing in positive the object to be reproduced.
- This model borrows is then used to achieve the final object by casting, which is therefore a positive object to reproduce.
- the present invention aims to overcome these disadvantages by providing a method of producing objects whose surface is structured, particularly suitable for representing parts of the surface of the skin of a person.
- the object obtained undergoes, after the casting operation, a polishing operation to accentuate the rendering of the relief.
- Another aspect of the invention relates to a kit enabling jewelery retailers to implement at least one impression taking step of the method according to the invention.
- a first step illustrated on the figure 1 consists in taking a first impression of a part of the skin of a person, for example the palm of his hand 10, by applying a very precise impression material 12, for example based on silicone, which has previously mixed with a hardener.
- a very precise impression material 12 for example based on silicone, which has previously mixed with a hardener.
- a second plaster impression is made from the first impression obtained previously.
- a formwork 14 wax is adjusted around the first cavity, to retain the plaster 16 which is cast using a vibrator.
- a second impression 17 is obtained which provides a positive, faithful and very precise representation of the palm of the hand.
- a model imprint 22 in wax representing in negative part of the palm of the person, is achieved.
- the model impression is made by pouring wax 18 on a selected zone 20, for example along a line of the hand. It is also possible to obtain the model impression by applying a very soft wax plate to the chosen zone 20.
- an insulating product intended to facilitate subsequent detachment of the model impression is coated on the second impression, before the application of wax.
- the model footprint 22 is carefully shaped, depending on the application that is desired to make the surface that will be obtained. For example, as illustrated on the figure 4 in order to obtain a ring, the model impression 22 is rolled up and its two ends are glued to the wax. Eventually, some alterations and adjustments are also made. If one wants to obtain a plate whose surface is structured, the model impression can be arranged on a wax support having the desired dimensions.
- the wax piece thus obtained is used to cast the final object, by casting technique.
- a casting rod is glued to the wax piece, around which a plaster mold is made.
- the mold is placed in an oven where the wax will melt and burn completely before molten metal is introduced into the mold through the channel provided by the casting rod.
- the object is sanded, cleaned and polished. It has a structured surface, the relief of which is a negative representation of the chosen part of the skin.
- the fact that the structure is negative offers a particularly aesthetic rendering, greatly improved by relation to a structure in positive. This allows, moreover, that the surface can receive a specific polishing, aiming to bring out all the lines and asperities.
- the model impression is obtained by wax molding of the fourth imprint.
- the first step is identical to that carried out previously. It consists in producing a first silicone molding of a part of the skin of a person, to obtain a first negative impression. Then, a second silicone molding is directly made on the basis of the first impression, to obtain a second positive impression. If necessary, this second impression can be straightened before curing the silicone paste. Finally, the model impression is obtained by wax molding of the second impression.
- the above embodiments make it possible to obtain an object representing the surface of the skin of a person, in a particularly safe, effective and with an aesthetically successful result.
- the invention also relates to a kit for implementing the method according to the invention. Indeed, it may be particularly interesting to use the method, as explained above, to make personalized jewelry, including rings whose surface is a line of the hand. For this purpose, it is preferable to allow jewelery retailers to make a model imprint that will be used later, in order to avoid people whose hand should be molded, to move.
- the invention also relates to a kit comprising an impression paste, for example based on silicone, and a hardener.
- the hardener can be placed in a suitable device, such as a syringe, to facilitate the dosage.
- the kit also includes a liquid degreasing and / or cleaning the skin, so that it is perfectly prepared for taking the impression.
- the kit can also include an assortment of finished models allowing the customer to make a choice regarding the metal, the size, the design of the object he wants. It is also possible to add a magnifying glass or an equivalent optical device to verify the accuracy and sharpness of the molding. Elements of identifications of any type (label, special marker ...) can also be added to the kit, in order to clearly assign an impression and the person on whom it has been molded, to avoid confusion or mixing.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Description
La présente invention se rapporte au domaine de la réalisation d'objets par moulage et trouve des applications particulièrement avantageuses dans le domaine de la bijouterie.The present invention relates to the field of producing objects by molding and finds particularly advantageous applications in the field of jewelery.
On connaît déjà des techniques de moulage permettant d'obtenir des reproductions d'objets existant. Ces techniques permettent, à partir d'un moule qui reproduit exactement un objet, de réaliser un grand nombre de pièces identiques, par exemple par la technique connue sous le nom de casting ou de coulée par cire perdue.Molding techniques are already known for obtaining reproductions of existing objects. These techniques make it possible, from a mold that exactly reproduces an object, to produce a large number of identical pieces, for example by the technique known as casting or casting by lost wax.
Selon les techniques connues, on réalise un premier moulage fournissant un négatif de l'objet à reproduire, à partir de laquelle on réalise une emprunte modèle représentant en positif l'objet à reproduire. Cette emprunte modèle est ensuite utilisée pour réaliser l'objet final par casting, qui est donc un positif de l'objet à reproduire.According to the known techniques, a first molding providing a negative of the object to be reproduced is made, from which a model curve is produced representing in positive the object to be reproduced. This model borrows is then used to achieve the final object by casting, which is therefore a positive object to reproduce.
Cependant, lorsque l'on souhaite ne reproduire qu'une partie de la peau d'une personne et non pas tout un membre, par exemple si l'on souhaite reproduire une partie de la paume de la main et non pas l'ensemble de la main, on s'aperçoit que ces techniques sont délicates à mettre en oeuvre. En outre, le rendu obtenu est relativement inesthétique et est, de ce fait, mal adapté pour des applications au domaine de la bijouterie.However, when one wishes to reproduce only a part of the skin of a person and not a whole limb, for example if one wishes to reproduce part of the palm of the hand and not the whole of the hand, one realizes that these techniques are delicate to implement. In addition, the result obtained is relatively unsightly and is, therefore, poorly suited for applications in the field of jewelry.
La présente invention a pour but de pallier ces inconvénients en proposant un procédé de réalisation d'objets dont la surface est structurée, particulièrement adapté pour représenter des parties de la surface de la peau d'une personne.The present invention aims to overcome these disadvantages by providing a method of producing objects whose surface is structured, particularly suitable for representing parts of the surface of the skin of a person.
De façon plus précise, l'invention concerne un procédé de réalisation d'un objet dont la surface est structurée, comprenant les étapes de
- réalisation par moulage d'une empreinte modèle en cire, représentant en négatif une partie de la peau d'une personne,
- application de l'empreinte modèle obtenue sur un support en cire ayant la forme de l'objet que l'on souhaite obtenir, et
- réalisation par casting de l'objet.
- embodiment by molding of a model wax imprint, representing in negative part of the skin of a person,
- applying the model imprint obtained on a wax support having the shape of the object that one wishes to obtain, and
- Casting of the object.
De manière avantageuse, l'objet obtenu subit, après l'opération de casting, une opération de polissage permettant d'accentuer le rendu du relief.Advantageously, the object obtained undergoes, after the casting operation, a polishing operation to accentuate the rendering of the relief.
Un autre aspect de l'invention concerne un kit permettant à des détaillants en bijouterie de mettre en oeuvre au moins une étape de prise d'empreinte du procédé selon l'invention.Another aspect of the invention relates to a kit enabling jewelery retailers to implement at least one impression taking step of the method according to the invention.
D'autres caractéristiques de la présente invention apparaîtront plus clairement à la lecture de la description qui va suivre, faite en référence aux quatre figures annexées qui sont des vues schématiques des étapes du procédé selon un premier mode de réalisation de l'invention.Other features of the present invention will appear more clearly on reading the description which follows, with reference to the four appended figures which are schematic views of the steps of the method according to a first embodiment of the invention.
Nous allons maintenant décrire une première variante du procédé selon l'invention. Une première étape illustrée sur la
Ensuite, comme le montre la
Enfin, une empreinte modèle 22 en cire, représentant en négatif une partie de la paume de la personne, est réalisée. De manière avantageuse, l'empreinte modèle est réalisée en faisant couler de la cire 18 sur une zone choisie 20, par exemple le long d'une ligne de la main. II est également possible d'obtenir l'empreinte modèle en appliquant une plaque de cire très molle sur la zone choisie 20. Eventuellement, un produit isolant destiné à faciliter le décollement ultérieur de l'empreinte modèle, est enduit sur la deuxième empreinte, avant l'application de la cire.Finally, a
Puis, l'empreinte modèle 22 est minutieusement mise en forme, en fonction de l'application que l'on souhaite faire de la surface qui va être obtenue. Par exemple, ainsi qu'illustré sur la
Enfin, la pièce en cire ainsi obtenue est utilisée pour couler l'objet final, par la technique du casting. On peut rappeler qu'une tige de coulée est collée à la pièce en cire, autour de laquelle on réalise un moule en plâtre. Dès que le plâtre a durci, on place le moule dans un four où la cire va fondre et brûler complètement avant que du métal en fusion soit introduit dans le moule, par le canal ménagé grâce à la tige de coulée. Après la destruction du moule, l'objet est sablé, nettoyé et poli. II présente une surface structurée, dont le relief est une représentation en négatif de la partie de la peau choisie. De manière surprenante, il a été constaté que le fait que la structure soit en négatif offre un rendu particulièrement esthétique, grandement amélioré par rapport à une structure en positif. Cela permet, en outre, que la surface puisse recevoir un polissage spécifique, visant à en faire ressortir toutes les lignes et les aspérités.Finally, the wax piece thus obtained is used to cast the final object, by casting technique. It may be recalled that a casting rod is glued to the wax piece, around which a plaster mold is made. As soon as the plaster has hardened, the mold is placed in an oven where the wax will melt and burn completely before molten metal is introduced into the mold through the channel provided by the casting rod. After the destruction of the mold, the object is sanded, cleaned and polished. It has a structured surface, the relief of which is a negative representation of the chosen part of the skin. Surprisingly, it has been found that the fact that the structure is negative offers a particularly aesthetic rendering, greatly improved by relation to a structure in positive. This allows, moreover, that the surface can receive a specific polishing, aiming to bring out all the lines and asperities.
Il arrive parfois que certaines lignes de la main dont on pourrait souhaiter prendre l'empreinte, ne soient pas droites. Dans ce cas, particulièrement si l'objet à réaliser est une bague, il est nécessaire de prévoir une étape au cours de laquelle l'empreinte peut être redressée. Pour ce faire, le procédé décrit précédemment peut être adapté. A partir de la deuxième empreinte en positif, réalisée en plâtre, un troisième moulage est réalisé avec un matériau à base de silicone, tel que mentionné précédemment, permettant d'obtenir une troisième empreinte en négatif. Cette troisième empreinte peut être redressée avant que le silicone ne soit complètement durci.It sometimes happens that some lines of the hand which one might wish to take the impression, are not straight. In this case, particularly if the object to be made is a ring, it is necessary to provide a step during which the impression can be straightened. To do this, the method described above can be adapted. From the second positive impression, made of plaster, a third molding is made with a silicone-based material, as mentioned above, to obtain a third negative impression. This third impression can be rectified before the silicone is completely cured.
Ensuite, un quatrième moulage de la troisième empreinte obtenue précédemment est effectué, permettant d'obtenir une quatrième empreinte en plâtre, en positif. Enfin, comme dans le premier mode de réalisation, l'empreinte modèle est obtenue par moulage à la cire de la quatrième empreinte.Then, a fourth molding of the third impression obtained previously is performed, to obtain a fourth plaster cavity, positive. Finally, as in the first embodiment, the model impression is obtained by wax molding of the fourth imprint.
Dans une autre variante du procédé selon l'invention, la première étape est identique à celle effectuée précédemment. Elle consiste à réaliser un premier moulage en silicone d'une partie de la peau d'une personne, pour obtenir une première empreinte en négatif. Ensuite, un deuxième moulage en silicone est directement réalisé sur la base de la première empreinte, permettant d'obtenir une deuxième empreinte en positif. Si besoin, cette deuxième empreinte peut être redressée avant durcissement de la pâte à base de silicone. Enfin, l'empreinte modèle est obtenue par moulage à la cire de la deuxième empreinte.In another variant of the method according to the invention, the first step is identical to that carried out previously. It consists in producing a first silicone molding of a part of the skin of a person, to obtain a first negative impression. Then, a second silicone molding is directly made on the basis of the first impression, to obtain a second positive impression. If necessary, this second impression can be straightened before curing the silicone paste. Finally, the model impression is obtained by wax molding of the second impression.
Les modes de réalisation ci-dessus permettent d'obtenir un objet représentant la surface de la peau d'une personne, de manière particulièrement sure, efficace et avec un résultat esthétiquement réussi.The above embodiments make it possible to obtain an object representing the surface of the skin of a person, in a particularly safe, effective and with an aesthetically successful result.
Dans une variante supplémentaire, particulièrement simple, on peut envisager de réaliser directement l'empreinte modèle en une seule étape. Pour ce faire, on applique directement sur la paume de la main une plaque de cire préalablement ramollie par chauffage. II est nécessaire d'exercer une pression suffisante de manière à marquer les structures de la paume. Une fois refroidie et démoulée de la main, on obtient directement la plaque de cire avec le relief négatif voulu. Toutefois, cette méthode est relativement aléatoire, car la précision obtenue en réalisant le moulage directement à la cire est moins bonne qu'avec les autres méthodes. En plus, la maîtrise de la température de la cire est plus difficile, car elle doit être suffisamment chaude pour se déformer correctement, mais pas trop pour ne pas brûler la main de la personne.In a further variant, particularly simple, it is conceivable to directly make the model footprint in one step. To do this, apply directly to the palm of the hand a wax plate previously softened by heating. It is necessary to exert sufficient pressure to mark the structures of the palm. Once cooled and demolded by hand, the wax plate is obtained directly with the desired negative relief. However, this method is relatively random, because the accuracy obtained by performing the molding directly with wax is less good than with other methods. In addition, controlling the temperature of the wax is more difficult, because it must be hot enough to deform properly, but not too much not to burn the hand of the person.
L'invention porte également sur un kit permettant de mettre en oeuvre le procédé selon l'invention. En effet, il peut être particulièrement intéressant d'utiliser le procédé, comme expliqué précédemment, pour réaliser des bijoux personnalisés, notamment des bagues dont la surface représente une ligne de la main. Dans ce but, il est préférable de permettre aux détaillants en bijouterie de réaliser une empreinte modèle qui sera utilisée ultérieurement, afin d'éviter aux personnes dont on doit mouler la main, de se déplacer. A cet effet, l'invention concerne également un kit comprenant une pâte à empreinte, par exemple à base de silicone, ainsi qu'un durcisseur. Le durcisseur peut être placé dans un dispositif adapté, tel qu'une seringue, afin d'en faciliter le dosage. Le kit comprend également un liquide de dégraissage et/ou de nettoyage de la peau, pour que celle-ci soit parfaitement préparée pour la prise d'empreinte. Le kit peut encore comprendre un assortiment de modèles finis permettant au client de faire un choix concernant le métal, la grandeur, le design de l'objet qu'il désire. Il est aussi possible d'ajouter une loupe ou un dispositif optique équivalent permettant de vérifier la précision et la netteté du moulage. Des éléments d'identifications de type quelconque (étiquette, feutre spécial...) peuvent également être ajoutés au kit, afin de clairement attribuer une empreinte et la personne sur laquelle celle-ci a été moulée, pour éviter toute confusion ou mélange.The invention also relates to a kit for implementing the method according to the invention. Indeed, it may be particularly interesting to use the method, as explained above, to make personalized jewelry, including rings whose surface is a line of the hand. For this purpose, it is preferable to allow jewelery retailers to make a model imprint that will be used later, in order to avoid people whose hand should be molded, to move. For this purpose, the invention also relates to a kit comprising an impression paste, for example based on silicone, and a hardener. The hardener can be placed in a suitable device, such as a syringe, to facilitate the dosage. The kit also includes a liquid degreasing and / or cleaning the skin, so that it is perfectly prepared for taking the impression. The kit can also include an assortment of finished models allowing the customer to make a choice regarding the metal, the size, the design of the object he wants. It is also possible to add a magnifying glass or an equivalent optical device to verify the accuracy and sharpness of the molding. Elements of identifications of any type (label, special marker ...) can also be added to the kit, in order to clearly assign an impression and the person on whom it has been molded, to avoid confusion or mixing.
Claims (8)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH8692007A CH700632B1 (en) | 2007-05-31 | 2007-05-31 | A method of making an object whose surface is structured. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2000231A1 true EP2000231A1 (en) | 2008-12-10 |
Family
ID=39563375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP08156938A Withdrawn EP2000231A1 (en) | 2007-05-31 | 2008-05-27 | Method for producing an object with a structured surface |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP2000231A1 (en) |
| CH (1) | CH700632B1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2903728A1 (en) * | 1979-02-01 | 1980-08-21 | Rainer Herget | Jewellery pendant etc. with imprinted pattern - has wearer's fingerprint in relief by using wax moulding |
| US4993472A (en) * | 1990-06-18 | 1991-02-19 | Culver Kirk L | Method of making fingerprint jewelry |
| JPH09140422A (en) * | 1995-11-21 | 1997-06-03 | Karin:Kk | Accessory and its manufacture |
| DE10038477A1 (en) * | 2000-08-07 | 2002-07-25 | Gregor Illguth | Taking impressions of body parts fills impression rubber into pre-hardened plaster mold for application to possibly intimate body part to give detailed and accurate impression. |
| US6435255B1 (en) * | 1998-05-05 | 2002-08-20 | Vahe Kaladjian | Fingerprint jewelry |
-
2007
- 2007-05-31 CH CH8692007A patent/CH700632B1/en not_active IP Right Cessation
-
2008
- 2008-05-27 EP EP08156938A patent/EP2000231A1/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2903728A1 (en) * | 1979-02-01 | 1980-08-21 | Rainer Herget | Jewellery pendant etc. with imprinted pattern - has wearer's fingerprint in relief by using wax moulding |
| US4993472A (en) * | 1990-06-18 | 1991-02-19 | Culver Kirk L | Method of making fingerprint jewelry |
| JPH09140422A (en) * | 1995-11-21 | 1997-06-03 | Karin:Kk | Accessory and its manufacture |
| US6435255B1 (en) * | 1998-05-05 | 2002-08-20 | Vahe Kaladjian | Fingerprint jewelry |
| US6648056B1 (en) * | 1998-05-05 | 2003-11-18 | Vahe Kaladjian | Fingerprint jewelry |
| DE10038477A1 (en) * | 2000-08-07 | 2002-07-25 | Gregor Illguth | Taking impressions of body parts fills impression rubber into pre-hardened plaster mold for application to possibly intimate body part to give detailed and accurate impression. |
Non-Patent Citations (1)
| Title |
|---|
| ANONYMOUS: "HOBBY TIME NEUHEITEN", INTERNET CITATION, 1 February 2006 (2006-02-01), XP002475561, Retrieved from the Internet <URL:http://glorex.combite.info/Data/files/NH%202-2006%20-%20DINL.pdf?size =5974304> [retrieved on 20080407] * |
Also Published As
| Publication number | Publication date |
|---|---|
| CH700632B1 (en) | 2010-10-15 |
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